/* ═══════════════════════════════════════════════════════════════
   PadreGPT — Argument Canvas Styles
   ═══════════════════════════════════════════════════════════════ */

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

:root {
    --navy:       #0a1628;
    --navy-light: #111d33;
    --navy-mid:   #162340;
    --gold:       #c9a84c;
    --gold-dim:   #a08535;
    --gold-glow:  rgba(201, 168, 76, 0.15);
    --text:       #d8d4cc;
    --text-muted: #8a8578;
    --border:     #1e2d4a;
    --card-bg:    #0f1a2e;
    --card-hover: #131f36;
    --danger:     #c0392b;
    --verified:   #27ae60;
    --font-heading: 'Cinzel', serif;
    --font-body:    'EB Garamond', serif;
}

body {
    font-family: var(--font-body);
    background: var(--navy);
    color: var(--text);
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* ── Header ────────────────────────────────────────────────── */
.canvas-header {
    background: var(--navy-light);
    border-bottom: 1px solid var(--border);
    padding: 12px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}
.header-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}
.header-brand .header-icon {
    font-size: 1.5rem;
    color: var(--gold);
}
.header-brand h1 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    color: var(--gold);
    font-weight: 600;
    letter-spacing: 0.05em;
}
.header-nav {
    display: flex;
    gap: 6px;
}
.header-nav a {
    font-family: var(--font-heading);
    font-size: 0.82rem;
    color: var(--text-muted);
    text-decoration: none;
    padding: 6px 14px;
    border-radius: 4px;
    transition: color 0.2s, background 0.2s;
    letter-spacing: 0.04em;
}
.header-nav a:hover { color: var(--text); background: var(--navy-mid); }
.header-nav a.active { color: var(--gold); background: var(--navy-mid); }

/* ── Layout ────────────────────────────────────────────────── */
.canvas-layout {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* ── Sidebar ───────────────────────────────────────────────── */
.canvas-sidebar {
    width: 260px;
    min-width: 260px;
    background: var(--navy-light);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.sidebar-header {
    padding: 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border);
}
.sidebar-header h2 {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    color: var(--gold);
    letter-spacing: 0.04em;
}
.btn-new-arg {
    width: 30px; height: 30px;
    border: 1px solid var(--gold-dim);
    background: transparent;
    color: var(--gold);
    font-size: 1.2rem;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.2s;
    display: flex; align-items: center; justify-content: center;
}
.btn-new-arg:hover { background: var(--gold-glow); }

.arg-list {
    list-style: none;
    flex: 1;
    overflow-y: auto;
    padding: 8px 0;
}
.arg-list li {
    padding: 10px 16px;
    cursor: pointer;
    border-left: 3px solid transparent;
    transition: background 0.15s, border-color 0.15s;
}
.arg-list li:hover { background: var(--navy-mid); }
.arg-list li.active {
    background: var(--navy-mid);
    border-left-color: var(--gold);
}
.arg-list li .arg-item-title {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.arg-list li .arg-item-meta {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 2px;
}

/* ── Main area ─────────────────────────────────────────────── */
.canvas-main {
    flex: 1;
    overflow-y: auto;
    padding: 24px 32px;
}

/* ── Empty state ───────────────────────────────────────────── */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    text-align: center;
    gap: 12px;
}
.empty-icon {
    font-size: 3rem;
    color: var(--gold-dim);
    opacity: 0.5;
}
.empty-state h2 {
    font-family: var(--font-heading);
    color: var(--gold);
    font-size: 1.4rem;
}
.empty-state p {
    color: var(--text-muted);
    max-width: 420px;
    line-height: 1.6;
}

/* ── Buttons ───────────────────────────────────────────────── */
.btn-primary {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    background: var(--gold);
    color: var(--navy);
    border: none;
    padding: 10px 22px;
    border-radius: 4px;
    cursor: pointer;
    letter-spacing: 0.04em;
    font-weight: 600;
    transition: background 0.2s;
}
.btn-primary:hover { background: var(--gold-dim); }

.btn-secondary {
    font-family: var(--font-heading);
    font-size: 0.82rem;
    background: transparent;
    color: var(--gold);
    border: 1px solid var(--gold-dim);
    padding: 8px 18px;
    border-radius: 4px;
    cursor: pointer;
    letter-spacing: 0.03em;
    transition: background 0.2s;
}
.btn-secondary:hover { background: var(--gold-glow); }

.btn-icon {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    width: 34px; height: 34px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    display: flex; align-items: center; justify-content: center;
    transition: color 0.2s, border-color 0.2s;
}
.btn-icon:hover { color: var(--text); border-color: var(--text-muted); }
.btn-icon.btn-danger:hover { color: var(--danger); border-color: var(--danger); }

/* ── Argument view ─────────────────────────────────────────── */
.arg-header {
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}
.arg-title-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}
.arg-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--gold);
    outline: none;
    flex: 1;
    padding: 4px 8px;
    border-radius: 4px;
    border: 1px solid transparent;
    transition: border-color 0.2s;
}
.arg-title:focus { border-color: var(--gold-dim); }
.arg-actions { display: flex; gap: 6px; }

.arg-desc {
    font-size: 1rem;
    color: var(--text-muted);
    outline: none;
    padding: 4px 8px;
    border-radius: 4px;
    border: 1px solid transparent;
    margin-top: 6px;
    min-height: 1.4em;
    transition: border-color 0.2s;
}
.arg-desc:focus { border-color: var(--border); color: var(--text); }
.arg-desc:empty::before {
    content: attr(data-placeholder);
    color: var(--text-muted);
    opacity: 0.5;
}

.add-card-bar {
    margin-bottom: 20px;
}

/* ── Sections ──────────────────────────────────────────────── */
.section-block {
    margin-bottom: 28px;
}
.section-heading {
    font-family: var(--font-heading);
    font-size: 1rem;
    color: var(--gold);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 12px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border);
}
.section-cards {
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-height: 40px;
    padding: 4px 0;
}
.section-cards.drag-over {
    background: var(--gold-glow);
    border-radius: 6px;
}
.section-empty {
    color: var(--text-muted);
    font-size: 0.85rem;
    font-style: italic;
    padding: 8px 12px;
}

/* ── Card ──────────────────────────────────────────────────── */
.canvas-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 14px 16px;
    cursor: default;
    transition: box-shadow 0.2s, border-color 0.2s;
    position: relative;
}
.canvas-card:hover {
    border-color: var(--gold-dim);
    box-shadow: 0 2px 12px rgba(0,0,0,0.3);
}
.canvas-card.dragging {
    opacity: 0.5;
    border-color: var(--gold);
}

.card-top-row {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}
.card-drag-handle {
    cursor: grab;
    color: var(--text-muted);
    font-size: 1rem;
    flex-shrink: 0;
    padding: 2px;
    user-select: none;
    opacity: 0.5;
    transition: opacity 0.2s;
}
.card-drag-handle:hover { opacity: 1; }
.card-drag-handle:active { cursor: grabbing; }

.card-summary {
    flex: 1;
    font-size: 1rem;
    line-height: 1.5;
    color: var(--text);
}

.card-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 8px;
    padding-left: 26px;
}
.source-badge {
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: 10px;
    background: var(--navy-mid);
    color: var(--text-muted);
    border: 1px solid var(--border);
    white-space: nowrap;
}
.verified-badge {
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: 10px;
    background: rgba(39, 174, 96, 0.15);
    color: var(--verified);
    border: 1px solid rgba(39, 174, 96, 0.3);
}

.card-actions-row {
    display: flex;
    gap: 8px;
    margin-top: 8px;
    padding-left: 26px;
}
.card-btn {
    font-size: 0.78rem;
    color: var(--text-muted);
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 2px 4px;
    transition: color 0.2s;
}
.card-btn:hover { color: var(--text); }
.card-btn.danger:hover { color: var(--danger); }

/* Card expanded detail */
.card-detail {
    margin-top: 12px;
    padding: 12px 16px;
    padding-left: 26px;
    border-top: 1px solid var(--border);
    display: none;
}
.card-detail.open { display: block; }

.card-full-response {
    font-size: 0.92rem;
    line-height: 1.6;
    color: var(--text-muted);
    white-space: pre-wrap;
    max-height: 300px;
    overflow-y: auto;
    margin-bottom: 10px;
}
.card-notes-label {
    font-family: var(--font-heading);
    font-size: 0.78rem;
    color: var(--gold-dim);
    letter-spacing: 0.04em;
    margin-bottom: 4px;
}
.card-notes {
    width: 100%;
    background: var(--navy);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
    font-family: var(--font-body);
    font-size: 0.9rem;
    padding: 8px 10px;
    resize: vertical;
    min-height: 60px;
    outline: none;
    transition: border-color 0.2s;
}
.card-notes:focus { border-color: var(--gold-dim); }

/* Section selector in card */
.card-section-select {
    background: var(--navy);
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.78rem;
    padding: 2px 6px;
    border-radius: 3px;
    cursor: pointer;
    outline: none;
}

/* ── Modal ─────────────────────────────────────────────────── */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}
.modal {
    background: var(--navy-light);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 24px;
    width: 520px;
    max-width: 90vw;
    max-height: 80vh;
    overflow-y: auto;
}
.modal h3 {
    font-family: var(--font-heading);
    color: var(--gold);
    margin-bottom: 16px;
    font-size: 1.1rem;
}
.modal label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin: 12px 0 4px;
    font-family: var(--font-heading);
    letter-spacing: 0.03em;
}
.modal textarea, .modal input[type="text"], .modal select {
    width: 100%;
    background: var(--navy);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
    font-family: var(--font-body);
    font-size: 0.95rem;
    padding: 8px 10px;
    outline: none;
    transition: border-color 0.2s;
}
.modal textarea:focus, .modal input:focus { border-color: var(--gold-dim); }
.modal select { cursor: pointer; }
.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 20px;
}

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

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 900px) {
    .canvas-sidebar {
        width: 200px;
        min-width: 200px;
    }
    .canvas-main {
        padding: 16px 20px;
    }
}

@media (max-width: 640px) {
    .canvas-sidebar {
        display: none;
    }
    .canvas-main {
        padding: 12px 14px;
    }
    .arg-title { font-size: 1.2rem; }
}