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

:root {
    --accent: #1a56db;
    --accent-light: #e1eaff;
    --accent-hover: #1444b0;
    --red: #dc2626;
    --red-light: #fee2e2;
    --green: #16a34a;
    --green-light: #dcfce7;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-serif: Georgia, 'Times New Roman', serif;
}

body {
    font-family: var(--font-sans);
    color: var(--gray-800);
    background: var(--gray-50);
    line-height: 1.5;
}

/* ── Header ───────────────────────────────────────────────────────────── */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.5rem;
    background: white;
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-left { display: flex; align-items: center; gap: 1.5rem; }
.header-right { display: flex; align-items: center; gap: 1rem; }

.app-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-700);
    letter-spacing: -0.01em;
}

.timer {
    font-variant-numeric: tabular-nums;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-700);
    padding: 0.25rem 0.75rem;
    background: var(--gray-100);
    border-radius: 6px;
}

.timer.warning { color: var(--red); background: var(--red-light); }

.team-badge {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--accent);
    background: var(--accent-light);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
}

.progress-badge {
    font-size: 0.875rem;
    color: var(--gray-600);
}

/* ── Main Layout ──────────────────────────────────────────────────────── */
.app-main { padding: 1.5rem; max-width: 1400px; margin: 0 auto; }

.game-layout {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 1.5rem;
    align-items: start;
}

/* ── Brief Panel ──────────────────────────────────────────────────────── */
.brief-panel {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    padding: 2rem 2.5rem;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
}

.brief-panel h2, .brief-panel h3 {
    font-family: var(--font-sans);
    font-weight: 600;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
}

.brief-text {
    font-family: var(--font-serif);
    font-size: 15px;
    line-height: 1.7;
    color: var(--gray-800);
}

.brief-text .paragraph { margin-bottom: 1em; }

.brief-text .paragraph.heading {
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    margin-top: 1.5em;
    color: var(--gray-700);
}

.brief-text .paragraph.block_quote {
    margin-left: 2rem;
    margin-right: 1rem;
    padding-left: 1rem;
    border-left: 3px solid var(--gray-200);
    font-size: 14px;
    color: var(--gray-600);
}

.brief-text .paragraph.footnote {
    font-size: 13px;
    color: var(--gray-500);
    border-top: 1px solid var(--gray-200);
    padding-top: 0.75rem;
    margin-top: 1.5rem;
}

.brief-text .paragraph.caption {
    text-align: center;
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 500;
    white-space: pre-line;
    margin-bottom: 1.5em;
}

.brief-text .paragraph.signature {
    white-space: pre-line;
    margin-top: 2em;
    text-align: right;
    font-size: 14px;
}

/* ── Citation Spans ───────────────────────────────────────────────────── */
.citation {
    border-bottom: 1.5px dotted var(--gray-400);
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
    padding-bottom: 1px;
    position: relative;
}

.citation:hover {
    background: var(--accent-light);
    border-bottom-color: var(--accent);
}

.citation.selected {
    background: var(--accent-light);
    border-bottom: 2px solid var(--accent);
}

.citation.swapped::after {
    content: '';
    position: absolute;
    top: -2px;
    right: -6px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
}

.text-highlight {
    background: #fef08a;
    border-radius: 2px;
    padding: 1px 0;
}

.citation.flagged-fake {
    background: var(--red-light);
    border-bottom-color: var(--red);
}

.citation.flagged-legit {
    background: var(--green-light);
    border-bottom-color: var(--green);
}

/* ── Annotated Brief: Type-colored citation highlights ────────────── */
.citation.type-fab { background: #ede9fe; border-bottom-color: #7c3aed; }
.citation.type-wc  { background: #dbeafe; border-bottom-color: #2563eb; }
.citation.type-mc  { background: #fef3c7; border-bottom-color: #d97706; }
.citation.type-mq  { background: #fce7f3; border-bottom-color: #db2777; }

.citation.was-caught { border-bottom: 2.5px solid var(--green); }
.citation.was-missed { border-bottom: 2.5px solid var(--red); }

/* ── Side Panel ───────────────────────────────────────────────────────── */
.side-panel {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    padding: 1.5rem;
    position: sticky;
    top: 70px;
    max-height: calc(100vh - 90px);
    overflow-y: auto;
}

.side-panel h3 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray-500);
    margin-bottom: 1rem;
}

.side-panel .citation-context {
    font-family: var(--font-serif);
    font-size: 14px;
    line-height: 1.6;
    padding: 0.75rem;
    background: var(--gray-50);
    border-radius: 6px;
    margin-bottom: 1rem;
    border: 1px solid var(--gray-200);
}

.side-panel .citation-context .highlight {
    background: #fef08a;
    padding: 1px 2px;
    border-radius: 2px;
}

.side-panel .empty-state {
    color: var(--gray-400);
    text-align: center;
    padding: 3rem 1rem;
    font-size: 0.875rem;
}

/* ── Form Elements ────────────────────────────────────────────────────── */
select, input[type="text"], input[type="number"] {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    font-size: 0.875rem;
    font-family: var(--font-sans);
    background: white;
    color: var(--gray-800);
}

select:focus, input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.1);
}

label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--gray-600);
    margin-bottom: 0.25rem;
}

.form-group { margin-bottom: 1rem; }

/* ── Buttons ──────────────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    border: 1px solid transparent;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: all 0.15s;
    gap: 0.375rem;
}

.btn:disabled { opacity: 0.5; cursor: not-allowed; }

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

.btn-danger {
    background: white;
    color: var(--red);
    border-color: var(--red);
}
.btn-danger:hover:not(:disabled) { background: var(--red-light); }

.btn-success {
    background: white;
    color: var(--green);
    border-color: var(--green);
}
.btn-success:hover:not(:disabled) { background: var(--green-light); }

.btn-ghost {
    background: transparent;
    color: var(--gray-600);
    border-color: var(--gray-300);
}
.btn-ghost:hover:not(:disabled) { background: var(--gray-100); }

.btn-lg { padding: 0.75rem 1.5rem; font-size: 1rem; }
.btn-sm { padding: 0.25rem 0.5rem; font-size: 0.8125rem; }
.btn-block { width: 100%; }

/* ── Radio Options ────────────────────────────────────────────────────── */
.option-group { margin-bottom: 1rem; }

.option-item {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    padding: 0.625rem 0.75rem;
    border: 1px solid var(--gray-200);
    border-radius: 6px;
    margin-bottom: 0.5rem;
    cursor: pointer;
    transition: border-color 0.15s, background 0.15s;
}

.option-item:hover { border-color: var(--gray-300); background: var(--gray-50); }
.option-item.selected { border-color: var(--accent); background: var(--accent-light); }

.option-item input[type="radio"] { margin-top: 2px; }

.option-label {
    font-size: 0.8125rem;
    line-height: 1.4;
}

.option-label .difficulty {
    display: inline-block;
    font-size: 0.6875rem;
    font-weight: 500;
    padding: 1px 6px;
    border-radius: 9999px;
    margin-left: 0.25rem;
}

.difficulty-hard { background: #fef3c7; color: #92400e; }
.difficulty-medium { background: #dbeafe; color: #1e40af; }

.option-preview {
    margin-top: 0.375rem;
    font-family: var(--font-serif);
    font-size: 0.75rem;
    line-height: 1.5;
    color: var(--gray-500);
    border-left: 2px solid var(--gray-200);
    padding-left: 0.5rem;
}

/* ── Verdict Buttons ──────────────────────────────────────────────────── */
.verdict-group {
    display: flex;
    gap: 0.75rem;
    margin-top: 1rem;
}

.verdict-btn {
    flex: 1;
    padding: 0.75rem;
    border: 2px solid var(--gray-200);
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    text-align: center;
    transition: all 0.15s;
    background: white;
    font-family: var(--font-sans);
}

.verdict-btn.legit:hover, .verdict-btn.legit.active {
    border-color: var(--green);
    background: var(--green-light);
    color: var(--green);
}

.verdict-btn.fake:hover, .verdict-btn.fake.active {
    border-color: var(--red);
    background: var(--red-light);
    color: var(--red);
}

/* ── Lobby ────────────────────────────────────────────────────────────── */
.lobby-container {
    max-width: 480px;
    margin: 4rem auto;
    text-align: center;
}

.lobby-container h2 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.lobby-container p {
    color: var(--gray-500);
    margin-bottom: 2rem;
}

.game-code-display {
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--accent);
    font-family: var(--font-sans);
    margin: 1.5rem 0;
}

.join-form {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    padding: 1.5rem;
    text-align: left;
}

.waiting-message {
    padding: 2rem;
    color: var(--gray-500);
    font-size: 0.875rem;
}

.team-list {
    display: grid;
    gap: 1rem;
    margin-top: 1.5rem;
    text-align: left;
}

.team-card {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    padding: 1rem 1.25rem;
}

.team-card h4 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--gray-700);
}

.team-card .player-list {
    list-style: none;
    font-size: 0.8125rem;
    color: var(--gray-600);
}

.team-card .player-list li {
    padding: 0.125rem 0;
}

.team-card--selected {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--accent-light);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--accent);
    color: var(--accent);
    cursor: default;
}

/* ── Professor Panel ──────────────────────────────────────────────────── */
.professor-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    max-width: 900px;
    margin: 0 auto;
}

.professor-layout .full-width {
    grid-column: 1 / -1;
}

.control-card {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    padding: 1.5rem;
}

.control-card h3 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray-500);
    margin-bottom: 1rem;
}

.phase-indicator {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
}

.phase-lobby { background: var(--gray-100); color: var(--gray-600); }
.phase-fabrication { background: #dbeafe; color: #1e40af; }
.phase-verification { background: #fef3c7; color: #92400e; }
.phase-reveal { background: var(--green-light); color: #166534; }

/* ── Scoreboard ───────────────────────────────────────────────────────── */
.scoreboard-layout {
    max-width: 1000px;
    margin: 0 auto;
}

.scores-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.score-card {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    padding: 1.25rem;
}

.score-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.score-total {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.score-breakdown {
    display: flex;
    gap: 1.5rem;
    font-size: 0.8125rem;
    color: var(--gray-500);
}

.score-breakdown span { font-weight: 600; color: var(--gray-700); }

.detail-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8125rem;
    margin-top: 1rem;
}

.detail-table th {
    text-align: left;
    padding: 0.5rem;
    border-bottom: 2px solid var(--gray-200);
    color: var(--gray-500);
    font-weight: 500;
    text-transform: uppercase;
    font-size: 0.6875rem;
    letter-spacing: 0.05em;
}

.detail-table td {
    padding: 0.5rem;
    border-bottom: 1px solid var(--gray-100);
}

.detail-table .correct { color: var(--green); }
.detail-table .incorrect { color: var(--red); }
.detail-table .skip { color: var(--gray-400); }

.badge {
    display: inline-block;
    padding: 1px 8px;
    border-radius: 9999px;
    font-size: 0.6875rem;
    font-weight: 500;
}

.badge-fab { background: #ede9fe; color: #5b21b6; }
.badge-wc { background: #dbeafe; color: #1e40af; }
.badge-mc { background: #fef3c7; color: #92400e; }
.badge-mq { background: #fce7f3; color: #9d174d; }

/* Type stats */
.type-stats {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    padding: 1.25rem;
    margin-top: 1.5rem;
}

.type-stats h3 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.stat-bar {
    margin-bottom: 0.75rem;
}

.stat-bar-label {
    display: flex;
    justify-content: space-between;
    font-size: 0.8125rem;
    margin-bottom: 0.25rem;
}

.stat-bar-track {
    height: 8px;
    background: var(--gray-100);
    border-radius: 4px;
    overflow: hidden;
}

.stat-bar-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 0.5s ease;
}

/* ── Print ────────────────────────────────────────────────────────────── */
@media print {
    .app-header, .side-panel, .timer, .btn { display: none !important; }

    body { background: white; }

    .app-main { padding: 0; max-width: none; }

    .game-layout { display: block; }

    .brief-panel {
        border: none;
        border-radius: 0;
        padding: 0;
        max-height: none;
        overflow: visible;
        box-shadow: none;
    }

    .brief-text { font-size: 12pt; line-height: 1.8; }

    .citation {
        border-bottom: none;
        cursor: default;
    }

    .citation.selected,
    .citation.flagged-fake,
    .citation.flagged-legit { background: none; border-bottom: none; }

    .citation.swapped::after { display: none; }
}

/* ── Landing Page ─────────────────────────────────────────────────────── */
.landing-container {
    max-width: 900px;
    margin: 3rem auto;
    text-align: center;
}

.landing-container h2 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.landing-container > p {
    color: var(--gray-500);
    margin-bottom: 2.5rem;
}

.mode-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    text-align: left;
}

.mode-card {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
}

.mode-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.mode-card > p {
    color: var(--gray-500);
    font-size: 0.875rem;
    margin-bottom: 1.25rem;
    flex: 1;
}

.landing-footer {
    margin-top: 2.5rem;
    font-size: 0.8125rem;
    color: var(--gray-400);
    text-align: center;
}

.landing-footer a {
    color: var(--gray-500);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.landing-footer a:hover {
    color: var(--accent);
}

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

/* ── Utilities ────────────────────────────────────────────────────────── */
.hidden { display: none !important; }
.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.gap-1 { gap: 0.5rem; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }