/* ── Common styles for Bridge App pages ── */
/* Responsive design for PC, tablet, mobile */

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

:root {
    --primary: #1a6b3c;
    --primary-dark: #145530;
    --primary-light: #2a8b4c;
    --accent: #d4a843;
    --bg: #f0f2f5;
    --card-bg: #ffffff;
    --text: #1a1a2e;
    --text-muted: #6b7280;
    --border: #e0e0e0;
    --danger: #dc3545;
    --success: #28a745;
    --info: #17a2b8;
    --shadow: 0 2px 12px rgba(0,0,0,0.08);
    --radius: 10px;
}

html { font-size: 16px; }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.5;
}

/* ── Top Navigation Bar ── */
.navbar {
    background: var(--primary);
    color: #fff;
    padding: 0 20px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    position: sticky;
    top: 0;
    z-index: 100;
}
.navbar .brand {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.navbar .brand .icon { font-size: 1.5rem; }
.navbar .nav-links {
    display: flex;
    align-items: center;
    gap: 16px;
}
.navbar .nav-links a {
    color: rgba(255,255,255,0.85);
    text-decoration: none;
    font-size: 0.9rem;
    padding: 6px 12px;
    border-radius: 6px;
    transition: background 0.2s;
}
.navbar .nav-links a:hover { background: rgba(255,255,255,0.15); }
.navbar .user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
}
.navbar .user-info .username { font-weight: 600; }
.navbar .user-info .btn-logout {
    background: rgba(255,255,255,0.2);
    border: none;
    color: #fff;
    padding: 5px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
}
.navbar .user-info .btn-logout:hover { background: rgba(255,255,255,0.3); }

/* ── Page Container ── */
.page-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px 16px;
}

/* ── Auth Pages (Login / Register) ── */
.auth-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 56px);
    padding: 20px;
}
.auth-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 40px 36px;
    width: 100%;
    max-width: 420px;
}
.auth-card h1 {
    text-align: center;
    font-size: 1.5rem;
    margin-bottom: 8px;
    color: var(--primary);
}
.auth-card .subtitle {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 28px;
    font-size: 0.9rem;
}
.form-group {
    margin-bottom: 18px;
}
.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text);
}
.form-group input {
    width: 100%;
    padding: 10px 14px;
    border: 1.5px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.2s;
    outline: none;
}
.form-group input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(26,107,60,0.12);
}
.form-group .hint {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 4px;
}
.form-error {
    background: #fef2f2;
    color: var(--danger);
    border: 1px solid #fecaca;
    border-radius: 8px;
    padding: 10px 14px;
    font-size: 0.875rem;
    margin-bottom: 16px;
    display: none;
}
.form-error.visible { display: block; }
.form-success {
    background: #f0fdf4;
    color: var(--success);
    border: 1px solid #bbf7d0;
    border-radius: 8px;
    padding: 10px 14px;
    font-size: 0.875rem;
    margin-bottom: 16px;
    display: none;
}
.form-success.visible { display: block; }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    text-decoration: none;
}
.btn:active { transform: scale(0.98); }
.btn-primary {
    background: var(--primary);
    color: #fff;
    width: 100%;
}
.btn-primary:hover { background: var(--primary-dark); }
.btn-secondary {
    background: #e5e7eb;
    color: var(--text);
}
.btn-secondary:hover { background: #d1d5db; }
.btn-accent {
    background: var(--accent);
    color: #fff;
}
.btn-accent:hover { background: #c09a38; }
.btn-danger {
    background: var(--danger);
    color: #fff;
}
.btn-info {
    background: var(--info);
    color: #fff;
}

.auth-footer {
    text-align: center;
    margin-top: 20px;
    font-size: 0.875rem;
    color: var(--text-muted);
}
.auth-footer a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}
.auth-footer a:hover { text-decoration: underline; }

/* ── Lobby Page ── */
.lobby-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 24px;
}
.lobby-header h1 {
    font-size: 1.5rem;
    color: var(--primary);
}
.lobby-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.section-title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--primary);
    display: inline-block;
}

/* Cards grid */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 16px;
    margin-bottom: 32px;
}
.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 20px;
    transition: transform 0.15s, box-shadow 0.15s;
}
.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0,0,0,0.12);
}
.card .card-title {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 8px;
}
.card .card-meta {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 12px;
}
.card .card-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}
.card .card-actions .btn {
    padding: 7px 16px;
    font-size: 0.875rem;
}

/* Quick Play section */
.quick-play {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 28px;
    text-align: center;
    margin-bottom: 32px;
}
.quick-play h2 {
    color: var(--primary);
    margin-bottom: 12px;
}
.quick-play p {
    color: var(--text-muted);
    margin-bottom: 20px;
}
.quick-play .btn {
    font-size: 1.1rem;
    padding: 14px 40px;
}

/* PK Setup */
.pk-options {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 16px;
}
.pk-option {
    background: var(--card-bg);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 24px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
    min-width: 80px;
}
.pk-option:hover, .pk-option.selected {
    border-color: var(--primary);
    background: #f0fdf4;
}
.pk-option .num {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}
.pk-option .label {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Results table */
.results-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--card-bg);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}
.results-table th, .results-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}
.results-table th {
    background: var(--primary);
    color: #fff;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.results-table tr:hover { background: #f9fafb; }
.results-table .imp-pos { color: var(--success); font-weight: 700; }
.results-table .imp-neg { color: var(--danger); font-weight: 700; }
.results-table .imp-zero { color: var(--text-muted); }
.btn-replay {
    display: inline-block;
    padding: 4px 12px;
    background: var(--accent, #0099cc);
    color: #fff;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
    text-decoration: none;
    white-space: nowrap;
    transition: background 0.15s;
}
.btn-replay:hover { background: #007aa3; color: #fff; }

/* Score comparison card */
.result-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 28px;
    text-align: center;
    margin-bottom: 20px;
}
.result-card .big-score {
    font-size: 3rem;
    font-weight: 800;
    margin: 12px 0;
}
.result-card .big-score.positive { color: var(--success); }
.result-card .big-score.negative { color: var(--danger); }
.result-card .big-score.zero { color: var(--text-muted); }
.result-card .desc {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* ── Modal / Dialog ── */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 200;
    padding: 20px;
}
.modal-overlay.visible { display: flex; }
.modal {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: 0 8px 32px rgba(0,0,0,0.2);
    padding: 32px;
    width: 100%;
    max-width: 480px;
    max-height: 90vh;
    overflow-y: auto;
}
.modal h2 { margin-bottom: 16px; color: var(--primary); }

/* ── Loading spinner ── */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Responsive ── */
@media (max-width: 768px) {
    html { font-size: 15px; }
    .navbar { padding: 0 12px; height: 50px; }
    .navbar .brand { font-size: 1.1rem; }
    .navbar .nav-links { gap: 8px; }
    .navbar .nav-links a { padding: 4px 8px; font-size: 0.82rem; }
    .page-container { padding: 16px 12px; }
    .auth-card { padding: 28px 20px; }
    .card-grid { grid-template-columns: 1fr; }
    .lobby-header { flex-direction: column; align-items: flex-start; }
    .quick-play { padding: 20px; }
    .quick-play .btn { width: 100%; }
    .results-table th, .results-table td { padding: 8px 10px; font-size: 0.85rem; }
}

@media (max-width: 480px) {
    html { font-size: 14px; }
    .navbar .nav-links a span.nav-text { display: none; }
    .auth-card { padding: 24px 16px; }
    .lobby-actions { width: 100%; }
    .lobby-actions .btn { flex: 1; text-align: center; }
    .pk-options { flex-direction: column; align-items: stretch; }
}

@media (min-width: 1024px) {
    .page-container { padding: 32px 24px; }
}

/* ── Utility ── */
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.gap-8 { gap: 8px; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.hidden { display: none; }