/* LLM Evaluator — theme #000000 / #CB2957 / #DDDDDD / #EEEEEE */

:root {
    --bg: #000000;           /* base background */
    --bg-card: #0d0d0d;       /* slightly lifted surface for cards */
    --bg-elevated: #141414;   /* inputs, chips, hover surfaces */
    --text: #EEEEEE;          /* primary text */
    --text-secondary: #DDDDDD;/* secondary text / muted accents */
    --text-muted: #9a9a9a;    /* placeholders, captions */
    --accent: #CB2957;        /* brand / primary interactive color */
    --accent-soft: #b0234a;   /* hover / border variant */
    --accent-glow: rgba(203, 41, 87, 0.35);
    --border: #232323;
    --green: #4cd964;
    --amber: #ffd166;
    --radius: 12px;
    --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

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

body {
    font-family: var(--font);
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
.header {
    background: linear-gradient(135deg, #0d0d0d 0%, #1a0b10 100%);
    border-bottom: 1px solid var(--border);
    padding: 32px 0;
    text-align: center;
}

.logo {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--accent);
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.tagline {
    font-size: 1.05rem;
    color: var(--text-secondary);
    font-weight: 400;
}

/* Main */
.main { padding: 48px 0; }

/* Input Section */
.input-section { margin-bottom: 48px; }

.sentence-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

@media (max-width: 768px) {
    .sentence-grid { grid-template-columns: 1fr; }
}

.field-label {
    display: block;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 8px;
}

.label-hint { color: var(--text-muted); font-weight: 400; font-size: 0.85rem; }

.sentence-input {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    background-color: var(--bg-card);
    color: var(--text);
    font-size: 1rem;
    font-family: inherit;
    resize: vertical;
    transition: all 0.2s ease;
}

.sentence-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 4px var(--accent-glow);
}

.sentence-input::placeholder { color: var(--text-muted); }

/* Evaluate Button */
.eval-actions {
    display: flex;
    justify-content: center;
    margin: 28px 0 32px;
}

.evaluate-btn {
    padding: 16px 40px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-soft) 100%);
    border: none;
    border-radius: var(--radius);
    color: #ffffff;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    min-width: 140px;
}

.evaluate-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--accent-glow);
}

.evaluate-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.btn-text, .btn-loader { display: flex; align-items: center; justify-content: center; }
.spinner { width: 20px; height: 20px; color: white; }
.hidden { display: none !important; }

/* Example Pairs */
.example-pairs { text-align: center; }
.examples-label {
    color: var(--text-secondary);
    margin-bottom: 16px;
    font-size: 0.95rem;
}

.pair-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    max-width: 900px;
    margin: 0 auto;
}

.pair-chip {
    padding: 10px 16px;
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.pair-chip:hover {
    background-color: var(--bg-elevated);
    border-color: var(--accent);
    color: var(--text);
    transform: translateY(-1px);
}

/* Results */
.results-section { animation: fadeIn 0.3s ease; }

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Composite highlight banner */
.composite-highlight {
    background: linear-gradient(135deg, var(--accent) 0%, #7a1f3d 100%);
    border-radius: var(--radius);
    padding: 20px 24px;
    margin-bottom: 28px;
    text-align: center;
    font-weight: 600;
    color: #ffffff;
    box-shadow: 0 6px 20px var(--accent-glow);
    font-size: 1.05rem;
}

/* Metric Grid */
.metric-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 24px;
}

@media (max-width: 1024px) {
    .metric-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
    .metric-grid { grid-template-columns: 1fr; }
}

.metric-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 24px;
    transition: all 0.3s ease;
}

.metric-card:hover {
    border-color: var(--accent);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.card-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.6px;
    margin-bottom: 12px;
}

.score {
    font-size: 3rem;
    font-weight: 800;
    color: var(--accent);
    line-height: 1.1;
    margin-bottom: 6px;
}

.score-caption {
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.lower-better { color: var(--amber); }

.badge-row {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.metric-badge {
    background-color: var(--bg-elevated);
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.78rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* ROUGE P/R/F table */
.prf-table { display: flex; flex-direction: column; gap: 8px; }
.prf-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--bg-elevated);
    border-radius: 8px;
    padding: 8px 12px;
    font-size: 0.85rem;
}
.prf-row span:first-child { color: var(--text-secondary); font-weight: 600; }
.prf-row span:nth-child(2) { color: var(--accent); font-weight: 700; }
.prf-row span:last-child { color: var(--text-muted); font-size: 0.78rem; }

/* Detail strip */
.detail-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
    margin-bottom: 28px;
}

.detail-item {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.9rem;
}

.highlight-item {
    border-color: var(--accent);
    color: var(--accent);
    font-weight: 700;
}

/* Judge card */
.judge-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 20px 24px;
    border-left: 4px solid var(--accent);
}

.judge-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    flex-wrap: wrap;
    gap: 8px;
}

.judge-title { font-size: 1.1rem; font-weight: 700; }

.judge-status {
    font-size: 0.82rem;
    padding: 4px 12px;
    border-radius: 12px;
    background-color: var(--bg-elevated);
    color: var(--text-muted);
}

.judge-status.enabled { color: var(--green); }
.judge-status.disabled { color: var(--amber); }

.judge-body { font-size: 0.95rem; color: var(--text-secondary); }

/* Loading skeleton */
.loading-state .metric-grid { margin-bottom: 0; }
.skeleton-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 24px;
}
.skeleton-header { margin-bottom: 20px; }
.skeleton-line {
    height: 16px;
    background: linear-gradient(90deg, #161616 25%, #2a2a2a 50%, #161616 75%);
    background-size: 200% 100%;
    animation: shimmer 2s infinite;
    border-radius: 4px;
    margin-bottom: 12px;
}
.skeleton-title { height: 20px; width: 50%; }
.skeleton-line.short { width: 70%; }

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

/* Responsive */
@media (max-width: 480px) {
    .container { padding: 0 16px; }
    .header { padding: 24px 0; }
    .logo { font-size: 2rem; }
    .main { padding: 32px 0; }
    .score { font-size: 2.4rem; }
}