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

:root {
    --bg-primary: #0f1117;
    --bg-secondary: #1a1d27;
    --bg-card: #22262f;
    --bg-card-hover: #2a2f3a;
    --bg-input: #181b23;
    --border: #2e3340;
    --border-focus: #4a9eff;
    --text-primary: #e8eaed;
    --text-secondary: #9aa0a6;
    --text-muted: #5f6368;
    --accent: #4a9eff;
    --accent-hover: #6db3ff;
    --green: #34d399;
    --yellow: #fbbf24;
    --orange: #f97316;
    --red: #ef4444;
    --purple: #a78bfa;
    --radius: 8px;
    --radius-sm: 4px;
    --shadow: 0 2px 8px rgba(0,0,0,0.3);
    --sidebar-width: 260px;
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: "SF Mono", "Fira Code", "Cascadia Code", monospace;
}

html, body {
    height: 100%;
    font-family: var(--font);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 14px;
    line-height: 1.5;
}

/* ── Layout ──────────────────────────────────── */
.app {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

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

.brand {
    padding: 20px 16px 12px;
    border-bottom: 1px solid var(--border);
}

.brand h1 {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.subtitle {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 2px;
}

.layer-nav {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
}

.layer-nav-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 13px;
    color: var(--text-secondary);
    transition: all 0.15s ease;
    margin-bottom: 2px;
}

.layer-nav-item:hover { background: var(--bg-card); color: var(--text-primary); }
.layer-nav-item.active { background: var(--accent); color: #fff; }
.layer-nav-item.active .nav-badge { background: rgba(255,255,255,0.2); color: #fff; }

.nav-badge {
    font-size: 11px;
    background: var(--bg-card);
    padding: 1px 6px;
    border-radius: 10px;
    font-weight: 500;
}

.nav-review-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--orange);
    margin-right: 6px;
    flex-shrink: 0;
}

.nav-label { display: flex; align-items: center; }

.nav-separator {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    padding: 12px 12px 4px;
    font-weight: 600;
}

/* ── Sidebar Footer ──────────────────────────── */
.sidebar-footer {
    padding: 12px 16px;
    border-top: 1px solid var(--border);
}

.progress-section { margin-bottom: 10px; }

.progress-bar {
    height: 4px;
    background: var(--bg-card);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 4px;
}

.progress-fill {
    height: 100%;
    background: var(--green);
    border-radius: 2px;
    transition: width 0.3s ease;
    width: 0%;
}

.progress-text {
    font-size: 11px;
    color: var(--text-secondary);
}

.actions { display: flex; gap: 8px; }

/* ── Buttons ─────────────────────────────────── */
.btn {
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: var(--text-primary);
    cursor: pointer;
    font-size: 13px;
    font-family: var(--font);
    transition: all 0.15s ease;
    flex: 1;
}

.btn:hover:not(:disabled) { background: var(--bg-card-hover); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); }

.btn-secondary { background: transparent; }

.btn-small {
    padding: 5px 10px;
    font-size: 12px;
    flex: none;
}

/* ── Content ─────────────────────────────────── */
.content {
    flex: 1;
    overflow-y: auto;
    padding: 20px 24px;
}

/* ── Toolbar ─────────────────────────────────── */
.toolbar {
    display: flex;
    gap: 10px;
    margin-bottom: 16px;
    align-items: center;
}

.toolbar input[type="search"] {
    flex: 1;
    max-width: 320px;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg-input);
    color: var(--text-primary);
    font-size: 13px;
    font-family: var(--font);
    outline: none;
    transition: border-color 0.15s;
}

.toolbar input:focus { border-color: var(--border-focus); }

.toolbar select {
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg-input);
    color: var(--text-primary);
    font-size: 13px;
    font-family: var(--font);
    outline: none;
    cursor: pointer;
}

/* ── Layer Header ────────────────────────────── */
.layer-header {
    display: flex;
    align-items: baseline;
    gap: 10px;
    margin-bottom: 16px;
}

.layer-header h2 { font-size: 18px; font-weight: 600; }
.layer-count { font-size: 13px; color: var(--text-secondary); }

/* ── Trait Grid ──────────────────────────────── */
.trait-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 12px;
}

/* ── Trait Card ──────────────────────────────── */
.trait-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: border-color 0.15s, transform 0.1s;
}

.trait-card:hover { border-color: var(--accent); transform: translateY(-1px); }
.trait-card.dirty { border-color: var(--yellow); }
.trait-card.confirmed { border-color: var(--green); }

.trait-thumb-wrap {
    position: relative;
    width: 100%;
    aspect-ratio: 1;
    background: var(--bg-primary);
    cursor: pointer;
    overflow: hidden;
}

.trait-thumb {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.trait-color-swatch {
    position: absolute;
    bottom: 6px;
    right: 6px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 2px solid rgba(255,255,255,0.3);
}

.trait-info {
    padding: 10px;
}

.trait-original {
    font-size: 11px;
    color: var(--text-muted);
    font-family: var(--font-mono);
    margin-bottom: 6px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.trait-name-row {
    display: flex;
    align-items: center;
    gap: 6px;
}

.trait-name-input {
    flex: 1;
    padding: 5px 8px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg-input);
    color: var(--text-primary);
    font-size: 13px;
    font-family: var(--font-mono);
    outline: none;
    min-width: 0;
}

.trait-name-input:focus { border-color: var(--border-focus); }

.trait-status {
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 3px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
    cursor: pointer;
}

.status-auto { background: rgba(74,158,255,0.15); color: var(--accent); }
.status-suggested { background: rgba(251,191,36,0.15); color: var(--yellow); }
.status-needs-review { background: rgba(249,115,22,0.15); color: var(--orange); }
.status-confirmed { background: rgba(52,211,153,0.15); color: var(--green); }

.trait-actions {
    display: flex;
    gap: 4px;
    margin-top: 6px;
}

.trait-action-btn {
    flex: 1;
    padding: 4px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 11px;
    font-family: var(--font);
    transition: all 0.15s;
}

.trait-action-btn:hover { background: var(--bg-card-hover); color: var(--text-primary); }
.trait-action-btn.confirm-btn:hover { color: var(--green); border-color: var(--green); }
.trait-action-btn.reset-btn:hover { color: var(--red); border-color: var(--red); }

/* ── Empty State ─────────────────────────────── */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
    font-size: 15px;
}

/* ── Modal ───────────────────────────────────── */
.modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.8);
}

.modal-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
}

.modal-content img {
    max-width: 100%;
    max-height: 85vh;
    border-radius: var(--radius);
    display: block;
}

.modal-close {
    position: absolute;
    top: -12px;
    right: -12px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ── Toast ───────────────────────────────────── */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    padding: 10px 20px;
    border-radius: var(--radius);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    font-size: 13px;
    box-shadow: var(--shadow);
    z-index: 2000;
    animation: toast-in 0.2s ease;
}

.toast.success { border-color: var(--green); }
.toast.error { border-color: var(--red); }

@keyframes toast-in {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ── 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); }