/* =============================================================
   Unlimited AI – calm, neutral UI
   ============================================================= */

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    /* dark theme (default, Claude/ChatGPT inspired) */
    --bg: #0d0d0f;
    --bg-elev: #161618;
    --bg-elev-2: #1c1c20;
    --bg-input: #202024;
    --bg-msg-user: var(--bg-elev-2);
    --bg-msg-assistant: transparent;
    --bg-glass: rgba(255, 255, 255, 0.04);
    --hover: rgba(255, 255, 255, 0.06);
    --hover-strong: rgba(255, 255, 255, 0.1);
    --border: rgba(255, 255, 255, 0.08);
    --border-strong: rgba(255, 255, 255, 0.16);
    --text: #ececf1;
    --text-strong: #ffffff;
    --muted: #b4b4bb;
    --quiet: #71717a;
    --accent: #c879ff;
    --accent-2: #2dd4bf;
    --accent-soft: rgba(200, 121, 255, 0.12);
    --user-color: #38bdf8;
    --merge: #f59e0b;
    --merge-soft: rgba(245, 158, 11, 0.14);
    --search: #3b82f6;
    --search-soft: rgba(59, 130, 246, 0.14);
    --danger: #ef4444;
    --success: #22c55e;
    --radius-sm: 6px;
    --radius: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    --sidebar: 272px;
    --header-h: 56px;
    --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
    --mono: "JetBrains Mono", ui-monospace, "SF Mono", Consolas, monospace;
    --ease: cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.18);
    --shadow: 0 6px 18px rgba(0, 0, 0, 0.22);
    --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.32);
}

body.light {
    --bg: #faf9f6;
    --bg-elev: #ffffff;
    --bg-elev-2: #f4f3ee;
    --bg-input: #ffffff;
    --bg-msg-user: #ffffff;
    --bg-glass: rgba(15, 23, 42, 0.025);
    --hover: rgba(15, 23, 42, 0.05);
    --hover-strong: rgba(15, 23, 42, 0.08);
    --border: rgba(15, 23, 42, 0.08);
    --border-strong: rgba(15, 23, 42, 0.16);
    --text: #1f1f24;
    --text-strong: #0a0a0d;
    --muted: #4b5563;
    --quiet: #8a8d96;
    --accent: #7c3aed;
    --accent-soft: rgba(124, 58, 237, 0.08);
    --user-color: #0ea5e9;
}

html,
body {
    height: 100%;
}

body {
    overflow: hidden;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font);
    font-feature-settings: "cv02", "cv03", "cv04", "cv11";
    font-size: 14px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

button,
input,
textarea,
select {
    font: inherit;
    color: inherit;
}

button {
    appearance: none;
    border: 0;
    background: transparent;
    cursor: pointer;
}

a {
    color: inherit;
}

::selection {
    background: var(--accent-soft);
    color: var(--text-strong);
}

/* =============================================================
   Background canvas (ambient particles)
   ============================================================= */
#bg-canvas {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    opacity: 0.06;
}

body.light #bg-canvas {
    opacity: 0.04;
}

/* =============================================================
   Layout
   ============================================================= */
#app {
    position: relative;
    z-index: 1;
    display: flex;
    height: 100vh;
    min-height: 0;
}

#main {
    flex: 1 1 auto;
    min-width: 0;
    min-height: 0;
    display: flex;
    flex-direction: column;
    background: var(--bg);
}

/* =============================================================
   Sidebar
   ============================================================= */
#sidebar {
    width: var(--sidebar);
    min-width: var(--sidebar);
    display: flex;
    flex-direction: column;
    min-height: 0;
    border-right: 1px solid var(--border);
    background: var(--bg-elev);
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 12px 14px;
    min-height: var(--header-h);
}

.logo-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
}

.logo-icon {
    width: 28px;
    height: 28px;
    flex: 0 0 auto;
    display: grid;
    place-items: center;
    border-radius: 7px;
    background: transparent;
    overflow: hidden;
}

.logo-icon img,
.logo-icon svg {
    width: 100%;
    height: 100%;
    display: block;
}

.sidebar-header h1 {
    color: var(--text-strong);
    font-size: 14px;
    font-weight: 700;
    letter-spacing: -0.01em;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.sidebar-section {
    padding: 8px 10px;
}

.sidebar-section + .sidebar-section {
    border-top: 1px solid var(--border);
}

#chat-search {
    width: 100%;
    height: 34px;
    padding: 0 12px 0 32px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-glass) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2371717a' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'><circle cx='11' cy='11' r='7'/><path d='m21 21-4.3-4.3'/></svg>") no-repeat 10px center;
    color: var(--text);
    font-size: 13px;
    outline: none;
    transition: border-color 150ms var(--ease), background-color 150ms var(--ease);
}

#chat-search::placeholder {
    color: var(--quiet);
}

#chat-search:focus {
    border-color: var(--border-strong);
    background-color: var(--bg-elev-2);
}
.mode-row {
    display: flex;
    gap: 6px;
}

.mode-btn {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    height: 34px;
    padding: 0 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-glass);
    color: var(--muted);
    font-size: 12px;
    font-weight: 600;
    transition: all 150ms var(--ease);
}

.mode-btn svg,
.mode-btn i {
    width: 14px;
    height: 14px;
}

.mode-btn:hover {
    background: var(--hover);
    color: var(--text);
}

.mode-btn.on {
    color: var(--text-strong);
    border-color: transparent;
}

#merge-btn.on {
    background: var(--merge-soft);
    color: var(--merge);
    border-color: rgba(245, 158, 11, 0.3);
}

#search-btn.on {
    background: var(--search-soft);
    color: var(--search);
    border-color: rgba(59, 130, 246, 0.3);
}

/* new chat button */
.btn-primary {
    width: 100%;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-elev-2);
    color: var(--text);
    font-size: 13px;
    font-weight: 500;
    transition: background 120ms var(--ease), border-color 120ms var(--ease);
}

.btn-primary:hover {
    background: var(--hover-strong);
    border-color: var(--border-strong);
}

.btn-primary svg,
.btn-primary i {
    width: 15px;
    height: 15px;
}

/* chat list */
#chat-scroller {
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto;
    padding: 6px 8px 12px;
}

.chat-group {
    margin-top: 12px;
}

.chat-group:first-child {
    margin-top: 4px;
}

.chat-group-title {
    padding: 4px 10px 6px;
    color: var(--quiet);
    font-size: 10.5px;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.chat-item {
    position: relative;
    display: flex;
    align-items: center;
    gap: 8px;
    height: 34px;
    margin-bottom: 1px;
    padding: 0 10px;
    border-radius: 8px;
    color: var(--muted);
    cursor: pointer;
    transition: background 120ms var(--ease), color 120ms var(--ease);
}

.chat-item:hover {
    background: var(--hover);
    color: var(--text);
}

.chat-item.active {
    background: var(--hover-strong);
    color: var(--text-strong);
}

.chat-item .chat-preview {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 13px;
    font-weight: 500;
}

.chat-delete {
    width: 22px;
    height: 22px;
    display: grid;
    place-items: center;
    flex: 0 0 auto;
    border-radius: 5px;
    color: var(--quiet);
    opacity: 0;
    transition: opacity 120ms var(--ease), background 120ms var(--ease), color 120ms var(--ease);
}

.chat-item:hover .chat-delete {
    opacity: 1;
}

.chat-delete:hover {
    background: rgba(239, 68, 68, 0.14);
    color: var(--danger);
}

.chat-delete svg,
.chat-delete i {
    width: 13px;
    height: 13px;
}

.empty-chats {
    padding: 24px 12px;
    color: var(--quiet);
    font-size: 12px;
    text-align: center;
    line-height: 1.5;
}

/* sidebar footer */
.sidebar-footer {
    border-top: 1px solid var(--border);
    padding: 10px 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.sidebar-footer .api-pill {
    flex: 1;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    height: 36px;
    padding: 0 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-glass);
    color: var(--muted);
    font-size: 12px;
    font-weight: 600;
    text-align: left;
    transition: background 150ms var(--ease), color 150ms var(--ease), border-color 150ms var(--ease);
}

.sidebar-footer .api-pill:hover {
    background: var(--hover);
    color: var(--text);
    border-color: var(--border-strong);
}

.sidebar-footer .api-pill svg,
.sidebar-footer .api-pill i {
    width: 14px;
    height: 14px;
    flex: 0 0 auto;
}

#api-pill-text {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

#api-pill-count {
    color: var(--text);
    font-family: var(--mono);
    font-size: 11px;
    font-weight: 500;
}

/* =============================================================
   Header
   ============================================================= */
#chat-header {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    gap: 10px;
    height: var(--header-h);
    padding: 0 18px;
    border-bottom: 1px solid var(--border);
    background: var(--bg);
    z-index: 5;
}

.header-mid {
    flex: 1;
    min-width: 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

#chat-title {
    color: var(--text-strong);
    font-size: 13px;
    font-weight: 600;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 6px;
}

body.shared-view #sidebar,
body.shared-view #sidebar-overlay,
body.shared-view #sidebar-toggle,
body.shared-view #model-picker-btn,
body.shared-view #input-area {
    display: none !important;
}

body.shared-view #main {
    width: 100%;
}

body.shared-view #messages {
    padding-bottom: 42px;
}

/* model picker button (header) */
.model-picker-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    height: 36px;
    max-width: 280px;
    padding: 0 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-elev);
    color: var(--text);
    font-size: 13px;
    font-weight: 600;
    transition: border-color 150ms var(--ease), background 150ms var(--ease);
}

.model-picker-btn:hover {
    border-color: var(--border-strong);
    background: var(--bg-elev-2);
}

.model-picker-btn .provider-logo {
    width: 18px;
    height: 18px;
    flex: 0 0 auto;
}

.model-picker-btn .mp-name {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.model-picker-btn .mp-tier {
    margin-left: 2px;
    padding: 1px 7px;
    border-radius: 999px;
    font-size: 9.5px;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.model-picker-btn .mp-chevron {
    width: 14px;
    height: 14px;
    color: var(--quiet);
}

/* generic icon button */
.icon-btn {
    width: 36px;
    height: 36px;
    display: grid;
    place-items: center;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: transparent;
    color: var(--muted);
    transition: background 120ms var(--ease), color 120ms var(--ease), border-color 120ms var(--ease);
}

.icon-btn:hover {
    background: var(--hover);
    color: var(--text-strong);
    border-color: var(--border-strong);
}

.icon-btn svg,
.icon-btn i {
    width: 16px;
    height: 16px;
}

.icon-btn.borderless {
    border-color: transparent;
}

/* =============================================================
   Messages area
   ============================================================= */
#messages {
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
    scroll-behavior: smooth;
    padding: 28px 0 24px;
}

.messages-inner {
    width: min(820px, 100%);
    margin: 0 auto;
    padding: 0 24px;
}

.message {
    display: flex;
    gap: 14px;
    margin-bottom: 28px;
    animation: msg-in 260ms var(--ease) both;
}

@keyframes msg-in {
    from {
        opacity: 0;
        transform: translateY(6px);
    }
}

.message.user {
    justify-content: flex-end;
}

.message .msg-avatar {
    width: 30px;
    height: 30px;
    flex: 0 0 auto;
    display: grid;
    place-items: center;
    border-radius: 9px;
    color: white;
    background: var(--mc, var(--accent));
}

.message .msg-avatar .provider-logo {
    width: 17px;
    height: 17px;
}

.message.user .msg-avatar {
    order: 2;
    background: var(--bg-elev-2);
    color: var(--muted);
    border: 1px solid var(--border);
}

.msg-body {
    max-width: 100%;
    min-width: 0;
}

.message.user .msg-body {
    max-width: min(620px, 78%);
}

.msg-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
    color: var(--quiet);
    font-size: 11.5px;
    font-weight: 600;
}

.msg-meta .name {
    color: var(--text-strong);
}

.msg-meta .tier {
    padding: 1px 6px;
    border-radius: 4px;
    background: var(--bg-elev-2);
    color: var(--quiet);
    border: 1px solid var(--border);
    font-size: 9.5px;
    font-weight: 500;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.message.user .msg-meta {
    justify-content: flex-end;
}

.msg-bubble {
    padding: 0;
    border-radius: var(--radius-lg);
    color: var(--text);
    overflow-wrap: anywhere;
    word-break: break-word;
}

.message.user .msg-bubble {
    padding: 10px 14px;
    border: 1px solid var(--border);
    background: var(--bg-msg-user);
    color: var(--text);
}

.message.assistant .msg-bubble {
    padding: 0 2px;
}

.message.error .msg-bubble {
    padding: 12px 16px;
    border: 1px solid rgba(239, 68, 68, 0.3);
    background: rgba(239, 68, 68, 0.08);
    color: #fecaca;
}

.msg-content {
    font-size: 15px;
    line-height: 1.7;
}

.message.user .msg-content {
    font-size: 14.5px;
    line-height: 1.55;
}

.msg-content p {
    margin: 0 0 12px;
}

.msg-content p:last-child {
    margin-bottom: 0;
}

.msg-content ul,
.msg-content ol {
    margin: 0 0 12px 18px;
    padding-left: 4px;
}

.msg-content li {
    margin: 4px 0;
}

.msg-content h1,
.msg-content h2,
.msg-content h3 {
    margin: 16px 0 8px;
    color: var(--text-strong);
    font-weight: 700;
    line-height: 1.3;
}

.msg-content h1 {
    font-size: 22px;
}

.msg-content h2 {
    font-size: 18px;
}

.msg-content h3 {
    font-size: 16px;
}

.msg-content strong {
    color: var(--text-strong);
    font-weight: 700;
}

.msg-content em {
    font-style: italic;
    color: var(--text-strong);
}

.msg-content blockquote {
    margin: 10px 0;
    padding: 8px 14px;
    border-left: 3px solid var(--accent);
    background: var(--accent-soft);
    color: var(--muted);
    border-radius: 0 var(--radius) var(--radius) 0;
}

.msg-content a {
    color: var(--text);
    text-decoration: underline;
    text-decoration-color: var(--quiet);
    text-underline-offset: 3px;
}

.msg-content a:hover {
    text-decoration-color: var(--text);
}

.msg-content hr {
    margin: 14px 0;
    border: 0;
    border-top: 1px solid var(--border);
}

.msg-content table {
    width: 100%;
    margin: 12px 0;
    border-collapse: collapse;
    font-size: 13.5px;
}

.msg-content th,
.msg-content td {
    border: 1px solid var(--border);
    padding: 8px 10px;
    text-align: left;
}

.msg-content th {
    background: var(--bg-glass);
    color: var(--text-strong);
    font-weight: 700;
}

/* inline code */
.inline-code,
.msg-content code:not(pre code) {
    padding: 2px 6px;
    border-radius: 5px;
    background: var(--bg-elev-2);
    color: #e9d5ff;
    font-family: var(--mono);
    font-size: 0.88em;
}

.message.user .msg-content code:not(pre code) {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text);
}

.msg-content mjx-container {
    max-width: 100%;
    overflow-x: auto;
    overflow-y: hidden;
}

.msg-content mjx-container[display="true"] {
    margin: 12px 0 !important;
    padding: 2px 0;
}

/* code blocks */
.msg-content pre {
    position: relative;
    margin: 14px 0;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: #0a0a0d;
    overflow: visible;
}

body.light .msg-content pre {
    background: #1a1a1f;
}

.code-bar {
    position: sticky;
    top: 0;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    height: 36px;
    padding: 0 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    background: rgba(255, 255, 255, 0.03);
    color: rgba(255, 255, 255, 0.55);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    border-radius: var(--radius) var(--radius) 0 0;
}

.code-copy {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    height: 26px;
    padding: 0 10px;
    border-radius: 6px;
    background: transparent;
    color: rgba(255, 255, 255, 0.7);
    font-size: 11px;
    font-weight: 600;
    transition: background 120ms var(--ease), color 120ms var(--ease);
}

.code-copy:hover {
    background: rgba(255, 255, 255, 0.08);
    color: white;
}

.code-copy.ok {
    color: var(--success);
}

.msg-content pre code {
    display: block;
    overflow-x: auto;
    padding: 14px 16px;
    background: transparent;
    color: #f4f4f5;
    font-family: var(--mono);
    font-size: 13px;
    line-height: 1.6;
    white-space: pre;
}

/* streaming caret */
.msg-content.streaming::after {
    content: "";
    display: inline-block;
    width: 2px;
    height: 14px;
    margin-left: 2px;
    background: currentColor;
    vertical-align: -2px;
    animation: caret 1s step-end infinite;
    opacity: 0.6;
}

@keyframes caret {
    50% {
        opacity: 0;
    }
}

/* message actions */
.msg-actions {
    display: flex;
    gap: 4px;
    margin-top: 8px;
    opacity: 0;
    transition: opacity 150ms var(--ease);
}

.message:hover .msg-actions,
.message.user:hover .msg-actions {
    opacity: 1;
}

.msg-act {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    height: 26px;
    padding: 0 9px;
    border-radius: 6px;
    background: transparent;
    color: var(--quiet);
    font-size: 11px;
    font-weight: 600;
    transition: background 120ms var(--ease), color 120ms var(--ease);
}

.msg-act:hover {
    background: var(--hover);
    color: var(--text);
}

.msg-act svg,
.msg-act i {
    width: 13px;
    height: 13px;
}

.msg-act.ok {
    color: var(--success);
}

.error-report-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: flex-start;
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid rgba(239, 68, 68, 0.18);
}

.continue-response-btn {
    border: 1px solid rgba(245, 158, 11, 0.28);
    background: rgba(245, 158, 11, 0.1);
    color: #fde68a;
    opacity: 1;
}

.continue-response-btn:hover:not(:disabled) {
    background: rgba(245, 158, 11, 0.16);
    color: #fffbeb;
}

.report-error-btn {
    border: 1px solid rgba(239, 68, 68, 0.26);
    background: rgba(239, 68, 68, 0.08);
    color: #fecaca;
    opacity: 1;
}

.report-error-btn:hover:not(:disabled) {
    background: rgba(239, 68, 68, 0.14);
    color: #fff1f2;
}

.report-error-btn:disabled {
    cursor: not-allowed;
    opacity: 0.72;
}

/* sources / reasoning */
.search-sources,
.reasoning-block {
    margin: 10px 0;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-glass);
    overflow: hidden;
}

.search-sources {
    border-color: rgba(59, 130, 246, 0.22);
    background: var(--search-soft);
}

.reasoning-block {
    border-color: rgba(200, 121, 255, 0.22);
    background: var(--accent-soft);
}

.search-sources-title,
.reasoning-summary {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 10px 12px;
    color: var(--search);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.reasoning-summary {
    color: var(--accent);
    cursor: pointer;
    user-select: none;
}

.reasoning-summary::-webkit-details-marker {
    display: none;
}

.search-sources-title svg,
.reasoning-summary svg,
.search-sources-title i,
.reasoning-summary i {
    width: 13px;
    height: 13px;
}

.search-sources-list {
    padding: 0 12px 10px;
    display: grid;
    gap: 4px;
}

.search-source-link {
    display: block;
    padding: 4px 0;
    color: #93c5fd;
    font-size: 13px;
    text-decoration: none;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.search-source-link:hover {
    text-decoration: underline;
    color: #bfdbfe;
}

.reasoning-content {
    padding: 0 12px 12px;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.6;
    border-top: 1px solid rgba(200, 121, 255, 0.12);
    padding-top: 10px;
}

/* typing dots */
.typing {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 0;
}

.typing span {
    width: 7px;
    height: 7px;
    border-radius: 999px;
    background: var(--mc, var(--accent));
    animation: bounce 1.2s ease-in-out infinite;
}

.typing span:nth-child(2) {
    animation-delay: 140ms;
}

.typing span:nth-child(3) {
    animation-delay: 280ms;
}

@keyframes bounce {
    0%, 80%, 100% {
        transform: translateY(0);
        opacity: 0.4;
    }
    40% {
        transform: translateY(-5px);
        opacity: 1;
    }
}

/* =============================================================
   Welcome screen
   ============================================================= */
.welcome {
    min-height: calc(100vh - var(--header-h) - 220px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 24px;
    text-align: center;
    gap: 18px;
}

.welcome-mark {
    color: var(--quiet);
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.welcome h2 {
    color: var(--text);
    font-size: 18px;
    font-weight: 500;
    letter-spacing: -0.01em;
}

.welcome p.lead {
    max-width: 460px;
    color: var(--quiet);
    font-size: 13px;
    line-height: 1.55;
}

.provider-strip {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px;
    width: 100%;
    max-width: 640px;
    margin-top: 4px;
}

.provider-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: transparent;
    color: var(--muted);
    font-size: 12px;
    font-weight: 500;
    transition: border-color 120ms var(--ease), color 120ms var(--ease);
}

.provider-chip:hover {
    color: var(--text);
    border-color: var(--border-strong);
}

.provider-chip .provider-logo {
    width: 14px;
    height: 14px;
}

.provider-chip .count {
    color: var(--quiet);
    font-size: 11px;
    font-weight: 500;
}

.suggestion-grid {
    display: flex;
    flex-direction: column;
    gap: 2px;
    margin-top: 12px;
    width: 100%;
    max-width: 480px;
    align-items: stretch;
}

.suggest {
    display: flex;
    align-items: baseline;
    gap: 10px;
    padding: 8px 12px;
    border: 0;
    border-radius: 6px;
    background: transparent;
    color: var(--quiet);
    font-size: 12.5px;
    text-align: left;
    cursor: pointer;
    transition: color 120ms var(--ease), background 120ms var(--ease);
}

.suggest:hover {
    background: var(--hover);
    color: var(--text);
}

.suggest .suggest-title {
    color: var(--muted);
    font-weight: 500;
    font-size: 12px;
    flex: 0 0 auto;
    width: 76px;
    text-align: left;
}

.suggest:hover .suggest-title {
    color: var(--text);
}

.suggest .suggest-desc {
    flex: 1;
    color: inherit;
    font-size: 12.5px;
    line-height: 1.4;
}

/* =============================================================
   Input area
   ============================================================= */
#input-area {
    flex: 0 0 auto;
    padding: 12px 24px 18px;
    background: var(--bg);
}

.input-shell {
    width: min(820px, 100%);
    margin: 0 auto;
}

.input-wrap {
    position: relative;
    display: flex;
    align-items: flex-end;
    gap: 8px;
    padding: 10px 10px 10px 14px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    background: var(--bg-input);
    transition: border-color 120ms var(--ease);
}

.input-wrap:focus-within {
    border-color: var(--text);
}

#user-input {
    flex: 1 1 auto;
    min-height: 24px;
    max-height: 220px;
    padding: 6px 0;
    border: 0;
    outline: 0;
    resize: none;
    background: transparent;
    color: var(--text);
    font-size: 15px;
    line-height: 1.55;
}

#user-input::placeholder {
    color: var(--quiet);
}

.btn-send,
.btn-stop {
    width: 36px;
    height: 36px;
    flex: 0 0 auto;
    display: grid;
    place-items: center;
    border-radius: var(--radius);
    transition: all 150ms var(--ease);
}

.btn-send {
    background: var(--text);
    color: var(--bg);
}

.btn-send:disabled {
    background: var(--bg-elev-2);
    color: var(--quiet);
    cursor: not-allowed;
}

.btn-send:hover:not(:disabled) {
    background: var(--text-strong);
}

.btn-stop {
    background: rgba(239, 68, 68, 0.16);
    color: var(--danger);
}

.btn-stop:hover {
    background: rgba(239, 68, 68, 0.26);
}

.btn-send svg,
.btn-stop svg,
.btn-send i,
.btn-stop i {
    width: 16px;
    height: 16px;
}

.input-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-top: 6px;
    color: var(--quiet);
    font-size: 11px;
    min-height: 14px;
}

.input-status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--accent);
    opacity: 0;
    transition: opacity 200ms var(--ease);
}

.input-status.visible {
    opacity: 1;
}

.input-status .dot {
    width: 6px;
    height: 6px;
    border-radius: 999px;
    background: currentColor;
    animation: pulse 1s ease-in-out infinite;
}

@keyframes pulse {
    50% {
        transform: scale(1.4);
        opacity: 0.5;
    }
}

.input-hint {
    color: var(--quiet);
}

.instructions-chip {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    height: 22px;
    padding: 0 8px;
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: 6px;
    background: rgba(245, 158, 11, 0.08);
    color: #facc15;
    font-size: 11px;
    font-weight: 600;
}

.instructions-chip.hidden {
    display: none;
}

.instructions-chip svg,
.instructions-chip i {
    width: 12px;
    height: 12px;
}

/* =============================================================
   Model picker dropdown
   ============================================================= */
#model-picker {
    position: fixed;
    top: 0;
    left: 0;
    width: min(620px, calc(100vw - 24px));
    max-height: min(560px, calc(100vh - 24px));
    z-index: 240;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-lg);
    background: var(--bg-elev);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    transform-origin: top left;
    animation: pop 160ms var(--ease) both;
}

@keyframes pop {
    from {
        opacity: 0;
        transform: translateY(-6px) scale(0.98);
    }
}

#model-picker.hidden {
    display: none;
}

#model-picker-backdrop {
    position: fixed;
    inset: 0;
    z-index: 230;
    background: transparent;
}

#model-picker-backdrop.hidden {
    display: none;
}

.mp-search-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    border-bottom: 1px solid var(--border);
}

#model-search {
    flex: 1;
    height: 36px;
    padding: 0 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-glass);
    color: var(--text);
    font-size: 13px;
    outline: none;
}

#model-search:focus {
    border-color: var(--border-strong);
    background: var(--bg-elev-2);
}

.mp-create-btn {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    height: 36px;
    padding: 0 12px;
    border: 1px solid rgba(245, 158, 11, 0.32);
    border-radius: var(--radius);
    background: rgba(245, 158, 11, 0.08);
    color: #facc15;
    font-size: 12px;
    font-weight: 700;
}

.mp-create-btn:hover {
    border-color: rgba(245, 158, 11, 0.52);
    background: rgba(245, 158, 11, 0.14);
}

.mp-create-btn svg,
.mp-create-btn i {
    width: 14px;
    height: 14px;
}

.mp-list {
    flex: 1 1 auto;
    overflow-y: auto;
    padding: 6px 8px 10px;
}

.mp-provider-group {
    margin: 8px 0 4px;
}

.mp-provider-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 10px;
    color: var(--muted);
    font-size: 11.5px;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.mp-provider-header .provider-logo {
    width: 16px;
    height: 16px;
}

.mp-provider-header .count {
    margin-left: auto;
    color: var(--quiet);
    font-size: 11px;
    font-weight: 600;
}

.mp-item {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    min-height: 46px;
    padding: 6px 10px;
    margin-bottom: 1px;
    border-radius: 8px;
    color: var(--text);
    text-align: left;
    cursor: pointer;
    transition: background 100ms var(--ease);
}

.mp-item:hover {
    background: var(--hover);
}

.mp-item.active {
    background: var(--hover-strong);
}

.mp-item .provider-logo {
    width: 18px;
    height: 18px;
    flex: 0 0 auto;
}

.mp-item-main {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.mp-item .mp-item-name {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 13.5px;
    font-weight: 600;
}

.mp-item-id {
    display: block;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--quiet);
    font-family: "JetBrains Mono", monospace;
    font-size: 10px;
    font-weight: 600;
}

.mp-item .mp-item-tier {
    padding: 2px 7px;
    border-radius: 999px;
    font-size: 9.5px;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.mp-item .mp-check {
    width: 14px;
    height: 14px;
    color: var(--accent);
    opacity: 0;
}

.mp-item.active .mp-check {
    opacity: 1;
}

.mp-item.custom .mp-check {
    color: #f59e0b;
}

.mp-actions {
    display: inline-flex;
    align-items: center;
    gap: 3px;
}

.mp-mini-action {
    display: inline-grid;
    place-items: center;
    width: 26px;
    height: 26px;
    border: 1px solid transparent;
    border-radius: 7px;
    color: var(--quiet);
}

.mp-mini-action:hover {
    border-color: var(--border);
    background: var(--hover);
    color: var(--text);
}

.mp-mini-action.danger:hover {
    color: #fb7185;
}

.mp-mini-action svg,
.mp-mini-action i {
    width: 13px;
    height: 13px;
}

.custom-model-logo {
    display: inline-grid;
    place-items: center;
    border: 1px solid rgba(245, 158, 11, 0.32);
    border-radius: 6px;
    background: rgba(245, 158, 11, 0.1);
    color: #f59e0b;
    font-size: 9px;
    font-weight: 900;
    line-height: 1;
    overflow: hidden;
}

.custom-model-logo.has-image {
    border-color: var(--border);
    background: var(--bg-elev-2);
}

.custom-model-logo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.mp-empty {
    padding: 24px;
    color: var(--quiet);
    font-size: 13px;
    text-align: center;
}

/* tier colors — muted, used as small label only */
.tier-flagship,
.tier-reasoning,
.tier-standard,
.tier-fast,
.tier-custom {
    background: var(--bg-elev-2);
    color: var(--quiet);
    border: 1px solid var(--border);
}

/* =============================================================
   API Modal — developer dashboard
   ============================================================= */
.api-modal {
    position: fixed;
    inset: 0;
    z-index: 250;
    display: grid;
    place-items: center;
    padding: 24px;
}

.api-modal.hidden {
    display: none;
}

.api-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.62);
    backdrop-filter: blur(10px);
}

.api-modal-panel {
    position: relative;
    z-index: 1;
    width: min(880px, 100%);
    max-height: min(820px, calc(100vh - 48px));
    overflow-y: auto;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    background: var(--bg-elev);
    box-shadow: var(--shadow-lg);
    animation: pop 220ms var(--ease) both;
}

.api-modal-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    padding: 22px 24px 18px;
    border-bottom: 1px solid var(--border);
}

.api-modal-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 8px;
    color: var(--quiet);
    font-family: var(--mono);
    font-size: 10.5px;
    font-weight: 500;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.api-modal-eyebrow svg,
.api-modal-eyebrow i {
    width: 12px;
    height: 12px;
}

.api-modal-header h2 {
    color: var(--text);
    font-size: 18px;
    font-weight: 500;
    letter-spacing: -0.01em;
    margin-bottom: 6px;
}

.api-modal-header p {
    color: var(--muted);
    font-size: 13px;
    line-height: 1.55;
    max-width: 540px;
}

/* stats row */
.api-stats {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1.4fr;
    gap: 12px;
    padding: 18px 24px;
    border-bottom: 1px solid var(--border);
}

.api-stat {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-glass);
}

.api-stat-label {
    color: var(--quiet);
    font-size: 10.5px;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.api-key-row {
    display: flex;
    align-items: center;
    gap: 6px;
    min-width: 0;
}

.api-key-row code {
    flex: 1;
    min-width: 0;
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-elev-2);
    color: var(--text-strong);
    font-family: var(--mono);
    font-size: 12px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    letter-spacing: 0.02em;
}

.api-key-row code[data-masked="true"] {
    color: var(--muted);
    letter-spacing: 0.18em;
}

.api-mini-btn {
    flex: 0 0 auto;
    width: 30px;
    height: 30px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    padding: 0;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-elev-2);
    color: var(--muted);
    transition: all 120ms var(--ease);
}

.api-mini-btn.solo {
    width: auto;
    padding: 0 11px;
    font-size: 11.5px;
    font-weight: 600;
}

.api-mini-btn:hover {
    background: var(--hover);
    color: var(--text-strong);
    border-color: var(--border-strong);
}

.api-mini-btn.ok {
    color: var(--success);
    border-color: rgba(34, 197, 94, 0.32);
}

.api-mini-btn svg,
.api-mini-btn i {
    width: 14px;
    height: 14px;
}

.api-usage-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.api-usage-bar {
    flex: 1;
    height: 8px;
    border-radius: 999px;
    background: var(--bg-elev-2);
    overflow: hidden;
}

.api-usage-fill {
    height: 100%;
    border-radius: 999px;
    background: var(--text);
    width: 0%;
    transition: width 280ms var(--ease);
}

.api-usage-fill.unlimited {
    width: 100% !important;
    background: var(--muted);
}

.api-usage-num {
    flex: 0 0 auto;
    color: var(--text-strong);
    font-family: var(--mono);
    font-size: 12px;
    font-weight: 600;
}

/* endpoint tabs */
.api-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    padding: 14px 24px 0;
}

.api-tab {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    height: 34px;
    padding: 0 12px;
    border-radius: 8px;
    color: var(--muted);
    font-size: 12.5px;
    font-weight: 600;
    transition: all 120ms var(--ease);
}

.api-tab svg,
.api-tab i {
    width: 14px;
    height: 14px;
}

.api-tab:hover {
    background: var(--hover);
    color: var(--text);
}

.api-tab.active {
    background: var(--bg-elev-2);
    color: var(--text);
    box-shadow: inset 0 -2px 0 var(--text-strong);
}

/* endpoint panel */
.api-endpoint {
    padding: 14px 24px 4px;
}

.api-endpoint-head {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-glass);
}

.api-method {
    padding: 3px 9px;
    border-radius: 6px;
    background: rgba(34, 197, 94, 0.16);
    color: var(--success);
    font-family: var(--mono);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.06em;
}

.api-method.get {
    background: rgba(59, 130, 246, 0.16);
    color: #60a5fa;
}

.api-method.guide {
    background: rgba(245, 158, 11, 0.16);
    color: #f59e0b;
}

.api-path {
    flex: 1;
    min-width: 0;
    padding: 6px 10px;
    border-radius: 6px;
    background: var(--bg-elev-2);
    color: var(--text-strong);
    font-family: var(--mono);
    font-size: 12.5px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.api-endpoint-desc {
    margin: 12px 4px 14px;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.55;
}

.api-lang-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 8px;
}

.api-lang-tabs {
    display: inline-flex;
    padding: 3px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-glass);
}

.api-lang-tab {
    height: 26px;
    padding: 0 12px;
    border-radius: 6px;
    color: var(--muted);
    font-size: 12px;
    font-weight: 600;
    transition: all 120ms var(--ease);
}

.api-lang-tab:hover {
    color: var(--text);
}

.api-lang-tab.active {
    background: var(--bg-elev-2);
    color: var(--text-strong);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.18);
}

.api-snippet {
    margin: 0;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: #0a0a0d;
    overflow: hidden;
}

body.light .api-snippet {
    background: #1a1a1f;
}

.api-snippet code {
    display: block;
    padding: 14px 16px;
    overflow-x: auto;
    color: #e9d5ff;
    font-family: var(--mono);
    font-size: 12.5px;
    line-height: 1.65;
    white-space: pre;
}

.api-snippet.small code {
    font-size: 11.5px;
    color: #cbd5e1;
}

.api-response {
    margin-top: 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-glass);
    overflow: hidden;
}

.api-response > summary {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    color: var(--muted);
    font-size: 11.5px;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    cursor: pointer;
    list-style: none;
    user-select: none;
}

.api-response > summary::-webkit-details-marker {
    display: none;
}

.api-response > summary svg,
.api-response > summary i {
    width: 14px;
    height: 14px;
    transition: transform 200ms var(--ease);
}

.api-response[open] > summary svg,
.api-response[open] > summary i {
    transform: rotate(180deg);
}

.api-response .api-snippet {
    border: 0;
    border-top: 1px solid var(--border);
    border-radius: 0;
}

.api-modal-footer {
    padding: 14px 24px 22px;
    color: var(--quiet);
    font-size: 12px;
    line-height: 1.55;
}

.api-modal-footer code {
    padding: 1px 6px;
    margin: 0 1px;
    border-radius: 5px;
    background: var(--bg-elev-2);
    color: #e9d5ff;
    font-family: var(--mono);
    font-size: 11px;
}

@media (max-width: 720px) {
    .api-stats {
        grid-template-columns: 1fr;
    }

    .api-tab span {
        display: none;
    }

    .api-tab {
        padding: 0 10px;
    }

    .api-modal-header {
        padding: 18px 18px 14px;
    }

    .api-stats,
    .api-tabs,
    .api-endpoint,
    .api-modal-footer {
        padding-left: 18px;
        padding-right: 18px;
    }
}

/* =============================================================
   Toasts
   ============================================================= */
#toast-container {
    position: fixed;
    left: 50%;
    bottom: 88px;
    z-index: 300;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    transform: translateX(-50%);
    pointer-events: none;
}

.toast {
    padding: 9px 14px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    background: var(--bg-elev);
    color: var(--text);
    font-size: 12.5px;
    font-weight: 600;
    box-shadow: var(--shadow);
    animation: toast-in 200ms var(--ease) both;
    pointer-events: auto;
}

.toast.ok {
    border-color: rgba(34, 197, 94, 0.32);
    color: var(--success);
}

.toast.err {
    border-color: rgba(239, 68, 68, 0.32);
    color: var(--danger);
}

@keyframes toast-in {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
}

@keyframes toast-out {
    to {
        opacity: 0;
        transform: translateY(-8px);
    }
}

/* =============================================================
   Provider logo SVG sizing (logos rendered inline in JS)
   ============================================================= */
.provider-logo {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/* Force any inline width/height/style on imported brand SVGs to fill the
   wrapper, so all logos render at the same size regardless of source. */
.provider-logo > svg {
    width: 100% !important;
    height: 100% !important;
    display: block;
    line-height: 1;
}

/* =============================================================
   Scrollbars
   ============================================================= */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.08);
    border-radius: 999px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.16);
}

body.light ::-webkit-scrollbar-thumb {
    background: rgba(15, 23, 42, 0.16);
}

/* =============================================================
   Mobile
   ============================================================= */
.mobile-only {
    display: none !important;
}

#sidebar-overlay {
    position: fixed;
    inset: 0;
    z-index: 90;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    pointer-events: none;
    transition: opacity 200ms var(--ease);
}

#sidebar-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.hidden {
    display: none !important;
}

@media (max-width: 860px) {
    .mobile-only {
        display: inline-flex !important;
    }

    #sidebar {
        position: fixed;
        inset: 0 auto 0 0;
        z-index: 100;
        transform: translateX(-100%);
        transition: transform 240ms var(--ease);
        box-shadow: 24px 0 60px rgba(0, 0, 0, 0.4);
    }

    #sidebar.open {
        transform: translateX(0);
    }

    #chat-header {
        padding: 0 14px;
    }

    .messages-inner {
        padding: 0 16px;
    }

    #input-area {
        padding: 12px 16px 14px;
    }

    .suggestion-grid {
        grid-template-columns: 1fr;
    }

    .api-modal {
        padding: 12px;
    }

    .model-picker-btn .mp-tier {
        display: none;
    }
}

@media (max-width: 480px) {
    .welcome h2 {
        font-size: 26px;
    }

    .model-picker-btn {
        max-width: 180px;
    }

    .header-actions .label-on-wide {
        display: none;
    }
}


/* =============================================================
   Feedback dialog
   ============================================================= */
.fb-modal {
    position: fixed;
    inset: 0;
    z-index: 260;
    display: grid;
    place-items: center;
    padding: 16px;
}

.fb-modal.hidden {
    display: none;
}

.fb-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
}

.fb-panel {
    position: relative;
    z-index: 1;
    width: min(440px, 100%);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    background: var(--bg-elev);
    box-shadow: var(--shadow-lg);
    animation: pop 200ms var(--ease) both;
}

.fb-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    padding: 16px 18px 14px;
    border-bottom: 1px solid var(--border);
}

.fb-head h3 {
    color: var(--text);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 3px;
}

.fb-head p {
    color: var(--quiet);
    font-size: 12px;
    line-height: 1.5;
}

.fb-body {
    padding: 14px 18px 16px;
}

.fb-types {
    display: flex;
    flex-wrap: wrap;
    width: fit-content;
    padding: 3px;
    margin-bottom: 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-glass);
}

.fb-type {
    height: 26px;
    padding: 0 12px;
    border-radius: 6px;
    color: var(--quiet);
    font-size: 12px;
    font-weight: 500;
    transition: color 120ms var(--ease), background 120ms var(--ease);
}

.fb-type:hover {
    color: var(--text);
}

.fb-type.active {
    background: var(--bg-elev-2);
    color: var(--text);
}

#fb-custom-type {
    width: 100%;
    height: 34px;
    margin-bottom: 10px;
    padding: 0 11px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-input);
    color: var(--text);
    font-size: 13px;
    outline: none;
}

#fb-custom-type.hidden {
    display: none;
}

#fb-custom-type:focus {
    border-color: var(--border-strong);
}

#fb-custom-type::placeholder {
    color: var(--quiet);
}

#fb-text {
    width: 100%;
    min-height: 110px;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-input);
    color: var(--text);
    font-size: 13.5px;
    line-height: 1.55;
    resize: vertical;
    outline: none;
    transition: border-color 120ms var(--ease);
}

#fb-text:focus {
    border-color: var(--border-strong);
}

#fb-text::placeholder {
    color: var(--quiet);
}

/* Honeypot — visually & semantically removed but reachable via DOM */
#fb-website {
    position: absolute !important;
    left: -9999px !important;
    width: 1px;
    height: 1px;
    opacity: 0;
    pointer-events: none;
}

.fb-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 12px;
}

.fb-count {
    color: var(--quiet);
    font-family: var(--mono);
    font-size: 11px;
}

.fb-submit {
    height: 32px;
    padding: 0 14px;
    border-radius: var(--radius);
    background: var(--text);
    color: var(--bg);
    font-size: 12.5px;
    font-weight: 500;
    transition: background 120ms var(--ease), opacity 120ms var(--ease);
}

.fb-submit:disabled {
    background: var(--bg-elev-2);
    color: var(--quiet);
    cursor: not-allowed;
}

.fb-submit:hover:not(:disabled) {
    background: var(--text-strong);
}

/* =============================================================
   Settings and update log dialogs
   ============================================================= */
.settings-modal,
.update-log-modal,
.custom-model-modal {
    position: fixed;
    inset: 0;
    z-index: 270;
    display: grid;
    place-items: center;
    padding: 16px;
}

.settings-modal.hidden,
.update-log-modal.hidden,
.custom-model-modal.hidden {
    display: none;
}

.settings-backdrop,
.update-log-backdrop,
.custom-model-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
}

.settings-panel,
.update-log-panel,
.custom-model-panel {
    position: relative;
    z-index: 1;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    background: var(--bg-elev);
    box-shadow: var(--shadow-lg);
    animation: pop 200ms var(--ease) both;
}

.settings-panel {
    width: min(500px, 100%);
}

.custom-model-panel {
    width: min(640px, 100%);
    max-height: min(760px, calc(100vh - 32px));
    overflow: hidden;
}

.update-log-panel {
    width: min(820px, 100%);
    max-height: min(860px, calc(100vh - 32px));
    overflow-x: hidden;
    overflow-y: auto;
}

.settings-head,
.update-log-head,
.custom-model-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    padding: 16px 18px 14px;
    border-bottom: 1px solid var(--border);
}

.settings-head h3,
.update-log-head h3,
.custom-model-head h3 {
    color: var(--text);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 3px;
}

.settings-head p,
.update-log-head p,
.custom-model-head p {
    color: var(--quiet);
    font-size: 12px;
    line-height: 1.5;
}

.settings-body {
    display: grid;
    gap: 12px;
    padding: 14px 18px 18px;
}

.settings-label {
    color: var(--quiet);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

#settings-instructions {
    width: 100%;
    min-height: 130px;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-input);
    color: var(--text);
    font-size: 13.5px;
    line-height: 1.55;
    resize: vertical;
}

#settings-instructions:focus {
    border-color: var(--border-strong);
    box-shadow: 0 0 0 3px rgba(167, 139, 250, 0.1);
}

.effort-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
}

.effort-option {
    height: 34px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-glass);
    color: var(--muted);
    font-size: 12px;
    font-weight: 600;
}

.effort-option:hover,
.effort-option.active {
    border-color: var(--border-strong);
    background: var(--hover-strong);
    color: var(--text);
}

.settings-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

.settings-clear,
.settings-save {
    height: 36px;
    padding: 0 14px;
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 700;
}

.settings-clear {
    border: 1px solid var(--border);
    background: var(--bg-glass);
    color: var(--muted);
}

.settings-clear:hover {
    border-color: var(--border-strong);
    color: var(--text);
}

.settings-save {
    background: var(--text);
    color: var(--bg);
}

.custom-model-body {
    display: grid;
    gap: 14px;
    max-height: calc(min(760px, 100vh - 32px) - 70px);
    overflow-y: auto;
    padding: 14px 18px 18px;
}

.custom-model-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(160px, 220px);
    gap: 10px;
}

.custom-model-grid label {
    display: grid;
    gap: 7px;
    min-width: 0;
}

.custom-model-grid span,
.custom-model-select-head > span {
    color: var(--quiet);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.custom-model-grid input {
    width: 100%;
    height: 36px;
    padding: 0 11px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-input);
    color: var(--text);
    font-size: 13px;
    outline: none;
}

.custom-model-grid input:focus {
    border-color: var(--border-strong);
    box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.09);
}

.custom-model-select-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.custom-model-select-head em {
    color: var(--quiet);
    font-size: 12px;
    font-style: normal;
}

.custom-model-options {
    display: grid;
    gap: 10px;
}

.custom-model-provider {
    display: grid;
    gap: 4px;
}

.custom-model-provider-title {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 4px 2px;
    color: var(--quiet);
    font-size: 11.5px;
    font-weight: 800;
}

.custom-model-provider-title .provider-logo {
    width: 15px;
    height: 15px;
}

.custom-model-option {
    display: grid;
    grid-template-columns: 18px 18px minmax(0, 1fr) auto;
    align-items: center;
    gap: 9px;
    min-height: 44px;
    padding: 7px 9px;
    border-radius: 8px;
    color: var(--text);
    cursor: pointer;
}

.custom-model-option:hover {
    background: var(--hover);
}

.custom-model-option input {
    width: 14px;
    height: 14px;
    accent-color: #f59e0b;
}

.custom-model-option .provider-logo {
    width: 17px;
    height: 17px;
}

.custom-model-option-main {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.custom-model-option-main span {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 13px;
    font-weight: 650;
}

.custom-model-option-main code {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--quiet);
    font-family: "JetBrains Mono", monospace;
    font-size: 10px;
    font-weight: 600;
}

.custom-model-option em {
    padding: 2px 7px;
    border: 1px solid var(--border);
    border-radius: 999px;
    color: var(--quiet);
    background: var(--bg-elev-2);
    font-size: 9.5px;
    font-style: normal;
    font-weight: 800;
    text-transform: uppercase;
}

.custom-model-option:has(input:disabled) {
    opacity: 0.45;
    cursor: not-allowed;
}

.custom-model-actions {
    display: grid;
    grid-template-columns: auto 1fr auto auto;
    gap: 8px;
    align-items: center;
    padding-top: 2px;
}

.custom-model-delete,
.custom-model-cancel,
.custom-model-save {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    height: 36px;
    padding: 0 13px;
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 700;
}

.custom-model-delete {
    border: 1px solid rgba(251, 113, 133, 0.3);
    background: rgba(251, 113, 133, 0.08);
    color: #fb7185;
}

.custom-model-delete.hidden {
    display: none;
}

.custom-model-cancel {
    border: 1px solid var(--border);
    background: var(--bg-glass);
    color: var(--muted);
}

.custom-model-save {
    background: var(--text);
    color: var(--bg);
}

.custom-model-save:disabled {
    background: var(--bg-elev-2);
    color: var(--quiet);
    cursor: not-allowed;
}

.custom-model-delete svg,
.custom-model-delete i {
    width: 14px;
    height: 14px;
}

.update-log-body {
    display: grid;
    gap: 14px;
    padding: 16px 18px 18px;
}

.update-showcase {
    min-height: 258px;
    display: grid;
    grid-template-columns: 128px minmax(0, 1fr) 190px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg);
    overflow: hidden;
}

.update-mini-sidebar {
    display: grid;
    align-content: start;
    gap: 8px;
    padding: 12px;
    border-right: 1px solid var(--border);
    background: var(--bg-elev);
}

.update-mini-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
    margin-bottom: 8px;
    color: var(--text-strong);
    font-size: 12px;
    font-weight: 800;
}

.update-mini-logo {
    flex: 0 0 auto;
    color: #cc785c;
    font-weight: 900;
}

.update-mini-nav {
    display: flex;
    align-items: center;
    gap: 7px;
    height: 30px;
    min-width: 0;
    padding: 0 9px;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    color: var(--quiet);
    font-size: 11px;
    font-weight: 700;
}

.update-mini-nav.active {
    border-color: var(--border);
    background: var(--hover);
    color: var(--text);
}

.update-mini-nav svg,
.update-mini-nav i {
    width: 13px;
    height: 13px;
    flex: 0 0 auto;
}

.update-mini-chat {
    min-width: 0;
    display: grid;
    grid-template-rows: auto minmax(0, 1fr) auto;
    border-right: 1px solid var(--border);
}

.update-mini-topbar {
    min-width: 0;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 0 14px;
    border-bottom: 1px solid var(--border);
}

.update-mini-model,
.update-mini-status {
    min-width: 0;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    white-space: nowrap;
}

.update-mini-model {
    color: var(--text);
    font-size: 12px;
    font-weight: 800;
}

.update-mini-model-dot {
    width: 8px;
    height: 8px;
    border-radius: 999px;
    background: #cc785c;
    box-shadow: 0 0 0 3px rgba(204, 120, 92, 0.14);
}

.update-mini-model em {
    padding: 1px 6px;
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--quiet);
    font-size: 9px;
    font-style: normal;
    letter-spacing: 0.04em;
}

.update-mini-status {
    color: var(--quiet);
    font-size: 11px;
    font-weight: 700;
}

.update-mini-status span {
    width: 6px;
    height: 6px;
    border-radius: 999px;
    background: var(--success);
}

.update-mini-thread {
    min-width: 0;
    display: grid;
    align-content: start;
    gap: 12px;
    padding: 14px;
}

.update-mini-message {
    min-width: 0;
    display: grid;
    gap: 5px;
}

.update-mini-message span {
    color: var(--quiet);
    font-size: 10.5px;
    font-weight: 800;
}

.update-mini-message p {
    max-width: 100%;
    color: var(--text);
    font-size: 12px;
    line-height: 1.55;
    overflow-wrap: anywhere;
}

.update-mini-message.user {
    width: min(245px, 78%);
    justify-self: end;
}

.update-mini-message.user span {
    justify-self: end;
    color: var(--text);
}

.update-mini-message.user p {
    padding: 9px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-msg-user);
}

.update-mini-message.assistant p {
    font-family: var(--mono);
    font-size: 11.5px;
    color: var(--text-strong);
}

.update-mini-code {
    min-width: 0;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: #0a0a0d;
    overflow: hidden;
}

.update-mini-code > div {
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 0 10px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    color: rgba(255, 255, 255, 0.55);
    font-size: 10px;
    font-weight: 800;
    text-transform: uppercase;
}

.update-mini-code button {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    color: rgba(255, 255, 255, 0.72);
    font-size: 10px;
    font-weight: 800;
}

.update-mini-code svg,
.update-mini-code i {
    width: 12px;
    height: 12px;
}

.update-mini-code pre {
    margin: 0;
    padding: 11px 12px;
    color: #f4f4f5;
    font-family: var(--mono);
    font-size: 11px;
    line-height: 1.55;
    white-space: pre-wrap;
}

.update-mini-composer {
    min-width: 0;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin: 0 14px 14px;
    padding: 0 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-input);
    color: var(--quiet);
}

.update-mini-composer span {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    height: 22px;
    min-width: 0;
    padding: 0 8px;
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: 6px;
    background: rgba(245, 158, 11, 0.08);
    color: #facc15;
    font-size: 11px;
    font-weight: 700;
    white-space: nowrap;
}

.update-mini-composer svg,
.update-mini-composer i {
    width: 13px;
    height: 13px;
    flex: 0 0 auto;
}

.update-mini-settings {
    min-width: 0;
    display: grid;
    align-content: start;
    gap: 10px;
    padding: 13px;
    background: var(--bg-elev);
}

.update-mini-settings-head {
    display: flex;
    align-items: center;
    gap: 7px;
    color: var(--text);
    font-size: 12px;
    font-weight: 800;
}

.update-mini-settings-head svg,
.update-mini-settings-head i {
    width: 14px;
    height: 14px;
    color: var(--muted);
}

.update-mini-settings label {
    color: var(--quiet);
    font-size: 10px;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.update-mini-effort {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 5px;
}

.update-mini-effort span {
    height: 27px;
    display: grid;
    place-items: center;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--quiet);
    font-size: 10.5px;
    font-weight: 800;
}

.update-mini-effort span.active {
    border-color: var(--border-strong);
    background: var(--hover-strong);
    color: var(--text);
}

.update-mini-textarea {
    display: grid;
    gap: 6px;
    min-height: 78px;
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-input);
}

.update-mini-textarea span {
    height: 9px;
    max-width: 100%;
    border-radius: 999px;
    background: var(--border-strong);
    font-size: 0;
}

.update-mini-textarea span:last-child {
    width: 74%;
}

.update-release {
    display: grid;
    grid-template-columns: minmax(260px, 0.85fr) minmax(280px, 1fr);
    align-items: center;
    gap: 14px;
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-glass);
}

.update-release-copy {
    min-width: 0;
    display: grid;
    gap: 7px;
}

.update-kicker {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--muted);
    font-size: 11px;
    font-weight: 800;
}

.update-kicker svg,
.update-kicker i {
    width: 13px;
    height: 13px;
    color: var(--accent);
}

.update-release p {
    color: var(--text);
    font-size: 13px;
    line-height: 1.55;
}

.update-highlight-row {
    display: flex;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 6px;
}

.update-highlight {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    height: 26px;
    padding: 0 9px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-elev-2);
    color: var(--muted);
    font-size: 11px;
    font-weight: 800;
    white-space: nowrap;
}

.update-highlight svg,
.update-highlight i {
    width: 12px;
    height: 12px;
    color: var(--success);
}

.update-log-sections {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.update-log-section {
    min-width: 0;
    padding: 13px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-glass);
}

.update-section-head {
    display: flex;
    align-items: center;
    gap: 9px;
    margin-bottom: 9px;
}

.update-section-icon {
    width: 28px;
    height: 28px;
    display: grid;
    place-items: center;
    flex: 0 0 auto;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--accent-soft);
    color: var(--accent);
}

.update-section-icon svg,
.update-section-icon i {
    width: 15px;
    height: 15px;
}

.update-section-head h4 {
    min-width: 0;
    color: var(--text);
    font-size: 13px;
    font-weight: 800;
}

.update-log-section ul {
    list-style: none;
    display: grid;
    gap: 7px;
}

.update-log-section li {
    position: relative;
    padding-left: 13px;
    color: var(--muted);
    font-size: 12.5px;
    line-height: 1.5;
}

.update-log-section li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.72em;
    width: 4px;
    height: 4px;
    border-radius: 999px;
    background: var(--quiet);
}

@media (max-width: 720px) {
    .update-log-modal {
        padding: 10px;
    }

    .update-log-panel {
        max-height: calc(100vh - 20px);
    }

    .update-showcase {
        grid-template-columns: 1fr;
    }

    .update-mini-sidebar {
        display: none;
    }

    .update-mini-chat {
        border-right: 0;
    }

    .update-mini-settings {
        border-top: 1px solid var(--border);
    }

    .update-release {
        grid-template-columns: 1fr;
    }

    .update-highlight-row {
        justify-content: flex-start;
    }

    .update-log-sections {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .update-log-body {
        padding: 12px;
    }

    .update-mini-topbar {
        align-items: flex-start;
        height: auto;
        min-height: 42px;
        flex-direction: column;
        justify-content: center;
        padding: 8px 12px;
    }

    .update-mini-thread {
        padding: 12px;
    }

    .update-mini-message.user {
        width: min(100%, 260px);
    }

    .update-mini-settings {
        display: none;
    }
}