/* Cassie — Nocturnal Theme
   Ported from Gradio CSS, stripped of ceremony */

@import url('https://fonts.googleapis.com/css2?family=Amiri:ital,wght@0,400;0,700;1,400&family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    --bg-deep: #070a14;
    --bg-canvas: #0c1020;
    --bg-block: #131830;
    --bg-input: #1b2140;
    --border: #2d3561;
    --text-dim: #515b8d;
    --text-muted: #7c84aa;
    --text-secondary: #a8aec6;
    --text: #c8cad0;
    --text-bright: #e8eaf0;
    --ember: #d97706;
    --gold: #f59e0b;
    --gold-light: #fad3a0;
    --coh-green: #065f46;
    --coh-green-hover: #047857;
    --coh-green-border: #059669;
    --coh-green-text: #d1fae5;
    --gap-red: #7f1d1d;
    --gap-red-hover: #991b1b;
    --gap-red-border: #dc2626;
    --gap-red-text: #fecaca;
    --font-body: 'Inter', system-ui, sans-serif;
    --font-arabic: 'Amiri', 'Traditional Arabic', serif;
    --font-mono: 'JetBrains Mono', monospace;
    --sidebar-width: 260px;
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
    height: 100%;
    background: var(--bg-canvas);
    color: var(--text);
    font-family: var(--font-body);
    font-size: 15px;
    line-height: 1.6;
    color-scheme: dark;
}

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-canvas); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-dim); }

/* --- Layout --- */
#app {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* --- Sidebar --- */
#sidebar {
    width: var(--sidebar-width);
    min-width: var(--sidebar-width);
    background: var(--bg-deep);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

#sidebar-header {
    padding: 16px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

#sidebar-header h1 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--gold);
}

#new-thread-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 4px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.8rem;
    font-family: var(--font-body);
    transition: all 0.2s;
}
#new-thread-btn:hover {
    border-color: var(--gold);
    color: var(--gold);
}

#thread-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
}

.thread-item {
    padding: 10px 12px;
    border-radius: 6px;
    cursor: pointer;
    margin-bottom: 2px;
    transition: background 0.15s;
    position: relative;
}
.thread-item:hover {
    background: var(--bg-block);
}
.thread-item.active {
    background: var(--bg-input);
    border-left: 2px solid var(--gold);
}
.thread-item .thread-preview {
    font-size: 0.85rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.thread-item .thread-meta {
    font-size: 0.7rem;
    color: var(--text-dim);
    margin-top: 2px;
}
.thread-item .thread-delete {
    position: absolute;
    top: 8px;
    right: 8px;
    background: none;
    border: none;
    color: var(--text-dim);
    cursor: pointer;
    font-size: 0.75rem;
    opacity: 0;
    transition: opacity 0.15s;
    padding: 2px 6px;
    border-radius: 3px;
}
.thread-item:hover .thread-delete {
    opacity: 1;
}
.thread-item .thread-delete:hover {
    color: var(--gap-red-text);
    background: var(--gap-red);
}

/* --- Main chat area --- */
#chat-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    background: var(--bg-canvas);
}

/* --- Mobile hamburger --- */
#menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.4rem;
    cursor: pointer;
    padding: 4px 8px;
}

#chat-header {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-block);
    display: flex;
    align-items: center;
    gap: 12px;
}
#chat-header .header-title {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-style: italic;
}

/* --- Messages --- */
#messages {
    flex: 1;
    overflow-y: auto;
    padding: 16px 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.message {
    max-width: 85%;
    padding: 12px 16px;
    border-radius: 10px;
    line-height: 1.65;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.message.user {
    align-self: flex-end;
    background: linear-gradient(135deg, #3d1c08, #5c2d0e);
    border: 1px solid #92400e;
    color: #fdebd0;
}

.message.assistant {
    align-self: flex-start;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-left: 2px solid rgba(245, 158, 11, 0.4);
    color: var(--text);
}

.message img {
    max-width: 100%;
    border-radius: 8px;
    margin-top: 8px;
}

/* Markdown in messages */
.message p { margin-bottom: 0.6em; }
.message p:last-child { margin-bottom: 0; }
.message h1, .message h2, .message h3 { color: var(--gold); margin: 0.8em 0 0.4em; }
.message a { color: var(--gold); }
.message code {
    background: var(--bg-canvas);
    color: var(--gold-light);
    border-radius: 4px;
    padding: 2px 5px;
    font-family: var(--font-mono);
    font-size: 0.9em;
}
.message pre {
    background: var(--bg-canvas);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 10px;
    overflow-x: auto;
    margin: 0.5em 0;
}
.message pre code {
    background: none;
    padding: 0;
    border-radius: 0;
}
.message blockquote {
    border-left: 2px solid var(--gold);
    padding-left: 12px;
    color: var(--text-secondary);
    margin: 0.5em 0;
}

/* Empty state */
#empty-state {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-dim);
    padding: 40px 20px;
    text-align: center;
}
#empty-state .bismillah {
    font-family: var(--font-arabic);
    font-size: 2rem;
    color: var(--gold);
    margin-bottom: 12px;
}
#empty-state .subtitle {
    font-size: 1rem;
    color: var(--text-muted);
    font-style: italic;
}

/* --- Progress indicator --- */
#progress {
    padding: 8px 24px;
    display: none;
}
#progress.active {
    display: flex;
    align-items: center;
    gap: 10px;
}
#progress .spinner {
    width: 16px;
    height: 16px;
    border: 2px solid var(--border);
    border-top-color: var(--gold);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
#progress .stage-label {
    font-size: 0.85rem;
    color: var(--gold);
    font-style: italic;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* --- Input area --- */
#input-area {
    padding: 12px 16px;
    border-top: 1px solid var(--border);
    background: var(--bg-block);
}

#input-form {
    display: flex;
    gap: 8px;
    align-items: flex-end;
}

#msg-input {
    flex: 1;
    background: var(--bg-input);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px 14px;
    font-size: 1rem;
    font-family: var(--font-body);
    resize: none;
    min-height: 44px;
    max-height: 150px;
    line-height: 1.4;
    outline: none;
    transition: border-color 0.2s;
}
#msg-input:focus {
    border-color: var(--gold);
    box-shadow: 0 0 20px rgba(245, 158, 11, 0.1);
}
#msg-input::placeholder {
    color: var(--text-dim);
}

#send-btn {
    min-height: 44px;
    min-width: 72px;
    border-radius: 8px;
    font-weight: 600;
    background: linear-gradient(135deg, var(--ember), var(--gold));
    border: none;
    color: var(--bg-deep);
    font-size: 0.85rem;
    cursor: pointer;
    font-family: var(--font-body);
    transition: all 0.2s;
}
#send-btn:hover {
    background: linear-gradient(135deg, #b45309, var(--ember));
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(217, 119, 6, 0.3);
}
#send-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* --- Inline witness widget --- */
.witness-widget {
    border-top: 1px solid rgba(45, 53, 97, 0.4);
    margin-top: 10px;
    padding-top: 6px;
    display: flex;
    align-items: center;
    gap: 6px;
}
.witness-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 1px solid transparent;
    background: transparent;
    cursor: pointer;
    font-size: 0.7rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
    color: var(--text-dim);
    padding: 0;
}
.witness-icon.coh:hover {
    background: var(--coh-green);
    border-color: var(--coh-green-border);
    color: var(--coh-green-text);
}
.witness-icon.gap:hover {
    background: var(--gap-red);
    border-color: var(--gap-red-border);
    color: var(--gap-red-text);
}
.witness-expand {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 1px solid transparent;
    background: transparent;
    cursor: pointer;
    font-size: 0.8rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
    color: var(--text-dim);
    padding: 0;
    margin-left: auto;
}
.witness-expand:hover {
    color: var(--gold);
    border-color: var(--gold);
}
.witness-expanded {
    display: flex;
    align-items: center;
    gap: 6px;
    width: 100%;
    margin-top: 4px;
}
.stance-input-inline {
    flex: 1;
    background: var(--bg-canvas);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 6px;
    padding: 4px 8px;
    font-size: 0.78rem;
    font-family: var(--font-body);
    outline: none;
    min-width: 0;
}
.stance-input-inline::placeholder {
    color: var(--text-dim);
}
.stance-input-inline:focus {
    border-color: var(--gold);
}
.witness-expanded .witness-icon {
    width: auto;
    border-radius: 4px;
    padding: 2px 10px;
    font-size: 0.75rem;
    font-weight: 600;
    font-family: var(--font-body);
}
.witness-result {
    font-size: 0.75rem;
    font-family: var(--font-mono);
}
.witness-result.result-coh {
    color: var(--coh-green-text);
}
.witness-result.result-gap {
    color: var(--gap-red-text);
}

/* --- SWL stats (sidebar footer) --- */
#swl-stats {
    padding: 10px 16px;
    border-top: 1px solid var(--border);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-dim);
    display: flex;
    align-items: center;
    gap: 6px;
}
#swl-stats .swl-label {
    color: var(--text-muted);
    font-weight: 600;
    margin-right: 4px;
}
#swl-stats .swl-coh {
    color: var(--coh-green-text);
}
#swl-stats .swl-gap {
    color: var(--gap-red-text);
}

/* --- Pipeline trace --- */
#trace {
    margin: 0 24px 8px;
}
#trace summary {
    font-size: 0.8rem;
    color: var(--text-dim);
    cursor: pointer;
    padding: 6px 0;
    user-select: none;
}
#trace summary:hover {
    color: var(--text-muted);
}
#trace .trace-content {
    background: var(--bg-block);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px 12px 12px 24px;
    margin-top: 4px;
    max-height: 400px;
    overflow-y: auto;
    position: relative;
}
#trace .trace-content::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 12px;
    bottom: 12px;
    width: 2px;
    background: linear-gradient(180deg, var(--border), rgba(45, 53, 97, 0.3));
}
.trace-stage {
    margin-bottom: 10px;
    padding-bottom: 10px;
    padding-left: 16px;
    border-bottom: 1px solid rgba(45, 53, 97, 0.3);
    position: relative;
}
.trace-stage:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}
/* Active stages */
.trace-stage.active .stage-name {
    color: var(--gold);
    font-weight: 600;
    font-size: 0.82rem;
    margin-bottom: 4px;
}
.trace-stage.active .stage-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: rgba(245, 158, 11, 0.25);
    color: var(--gold);
    font-size: 0.7rem;
    font-weight: 600;
    margin-right: 6px;
    box-shadow: 0 0 6px rgba(245, 158, 11, 0.3);
    position: relative;
    z-index: 1;
}
.trace-stage.active .stage-body {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-family: var(--font-body);
    line-height: 1.6;
}
.trace-stage.active .stage-body code {
    font-family: var(--font-mono);
    background: var(--bg-canvas);
    color: var(--gold-light);
    border-radius: 3px;
    padding: 1px 4px;
    font-size: 0.85em;
}
.trace-stage.active .stage-body p { margin-bottom: 0.4em; }
.trace-stage.active .stage-body p:last-child { margin-bottom: 0; }
.trace-stage.active .stage-body strong { color: var(--gold); }
.trace-stage.active .stage-body em { color: var(--text-muted); }
/* Skipped stages */
.trace-stage.skipped .stage-name {
    color: var(--text-dim);
    font-weight: 500;
    font-size: 0.82rem;
    margin-bottom: 2px;
}
.trace-stage.skipped .stage-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: rgba(45, 53, 97, 0.3);
    color: var(--text-dim);
    font-size: 0.7rem;
    font-weight: 600;
    margin-right: 6px;
    position: relative;
    z-index: 1;
}
.trace-stage.skipped .stage-body {
    font-size: 0.75rem;
    color: var(--text-dim);
    font-family: var(--font-body);
    line-height: 1.4;
}

/* --- Kitab verse --- */
#kitab-verse {
    padding: 14px 24px;
    text-align: center;
    animation: verse-breathe 12s ease-in-out infinite;
}
#kitab-verse .kitab-ar {
    font-family: var(--font-arabic);
    font-size: 1.2rem;
    direction: rtl;
    color: var(--gold);
    line-height: 1.8;
    margin-bottom: 4px;
}
#kitab-verse .kitab-divider {
    width: 40px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border), transparent);
    margin: 6px auto;
}
#kitab-verse .kitab-en {
    font-style: italic;
    color: var(--text-muted);
    font-size: 0.82rem;
    line-height: 1.6;
}
#kitab-verse .kitab-attr {
    font-size: 0.68rem;
    color: var(--text-dim);
    margin-top: 4px;
    letter-spacing: 0.05em;
}

@keyframes verse-breathe {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

/* --- Config panel --- */
#config-toggle {
    margin-left: auto;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.3rem;
    cursor: pointer;
    padding: 4px 8px;
    transition: color 0.2s;
    line-height: 1;
}
#config-toggle:hover {
    color: var(--gold);
}

#config-panel {
    overflow: hidden;
    max-height: 400px;
    transition: max-height 0.3s ease, opacity 0.3s ease;
    opacity: 1;
}
#config-panel.collapsed {
    max-height: 0;
    opacity: 0;
}

#config-panel .config-inner {
    background: var(--bg-block);
    border-bottom: 1px solid var(--border);
    padding: 14px 20px;
}

#config-panel .config-title {
    color: var(--gold);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 10px;
}

#config-panel .config-grid {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 8px 12px;
    align-items: center;
}

#config-panel .config-label {
    font-size: 0.82rem;
    color: var(--text-secondary);
}

#config-panel select {
    background: var(--bg-input);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 6px 10px;
    font-size: 0.82rem;
    font-family: var(--font-body);
    outline: none;
    cursor: pointer;
}
#config-panel select:focus {
    border-color: var(--gold);
}

#config-panel .config-check {
    font-size: 0.82rem;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
}
#config-panel .config-check input[type="checkbox"] {
    accent-color: var(--gold);
    width: 15px;
    height: 15px;
    cursor: pointer;
}

#config-panel .config-slider-row {
    display: flex;
    align-items: center;
    gap: 10px;
}
#config-panel input[type="range"] {
    flex: 1;
    accent-color: var(--gold);
    height: 4px;
    cursor: pointer;
}
#config-panel input[type="range"]:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}
#config-panel #cfg-temp-val {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--gold);
    min-width: 2.2em;
    text-align: right;
}

#config-panel .config-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 12px;
}

#config-panel #config-status {
    font-size: 0.78rem;
    color: var(--text-muted);
}

#config-panel #config-apply {
    min-height: 32px;
    min-width: 72px;
    border-radius: 6px;
    font-weight: 600;
    background: linear-gradient(135deg, var(--ember), var(--gold));
    border: none;
    color: var(--bg-deep);
    font-size: 0.82rem;
    cursor: pointer;
    font-family: var(--font-body);
    transition: all 0.2s;
}
#config-panel #config-apply:hover {
    background: linear-gradient(135deg, #b45309, var(--ember));
    transform: translateY(-1px);
    box-shadow: 0 3px 10px rgba(217, 119, 6, 0.3);
}

#config-panel .config-note {
    font-size: 0.75rem;
    color: var(--text-dim);
    font-style: italic;
    margin-top: 6px;
    min-height: 1em;
}

/* --- Mobile --- */
@media (max-width: 768px) {
    #sidebar {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        z-index: 100;
        transform: translateX(-100%);
        transition: transform 0.25s ease;
    }
    #sidebar.open {
        transform: translateX(0);
    }
    #sidebar-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 99;
    }
    #sidebar-overlay.open {
        display: block;
    }
    #menu-toggle {
        display: block;
    }
    #messages {
        padding: 12px 14px;
    }
    .message {
        max-width: 92%;
    }
    #input-area {
        position: sticky;
        bottom: 0;
    }
    #msg-input {
        font-size: 16px; /* prevent iOS zoom */
    }
    #trace {
        margin: 0 14px 8px;
    }
    #kitab-verse {
        padding: 10px 14px;
    }
    #kitab-verse .kitab-ar {
        font-size: 1rem;
    }
}