:root {
    --color-bg: #f4f6fa;
    --color-surface: #ffffff;
    --color-surface-2: #f7f8fa;
    --color-text: #2d3a4a;
    --color-muted: #888;
    --color-primary: #2F2F7F;
    --color-primary-600: #444488;
    --color-primary-50: rgba(47,47,127,0.06);
    --color-secondary-bg: #f0f0f5;
    --color-secondary-bg-hover: #e6e6ec;
    --color-danger: #dc3545;
    --color-danger-600: #c82333;
    --ring: rgba(47,47,127,0.12);
    --shadow-soft: 0 2px 16px rgba(44,62,80,0.08);
}

body {
    min-height: 100vh;
    margin: 0;
    background: var(--color-bg) url('/static/images/background.png') center center / cover no-repeat fixed;
    font-family: system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
    color: var(--color-text);
    line-height: 1.45;
}

.top-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    background: rgba(255, 255, 255, 0.55);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    z-index: 100;
    box-sizing: border-box;
    -webkit-backdrop-filter: saturate(180%) blur(10px);
    backdrop-filter: saturate(180%) blur(10px);
}

.top-nav .brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--color-text);
}

/* Unified logo appearance */
.brand .logo {
    height: 50px;
    width: auto;
    border-radius: 6px;
    display: block;
}

.top-nav .nav-links {
    display: flex;
    align-items: center;
    gap: 12px;
}

.top-nav .user-email { font-size: 0.85rem; font-weight: 600; color: #2F2F7F; margin-right: 8px; }

body.with-top-nav { padding-top: 80px; }

.nav-box {
    background: rgba(255, 255, 255, 0.377);
    border-radius: 24px;
    padding: 32px 20px;
    max-width: 400px;
    margin: 60px auto;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.nav-box h1 {
    margin-bottom: 32px;
    color: var(--color-text);
    font-size: 2.2rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.nav-box a {
    margin: 10px 0;
    text-decoration: none;
    width: 100%;
}

.nav-box button {
    width: 100%;
    border-radius: 8px;
    margin-bottom: 8px;
}

.nav-box button.btn:hover {
    transform: translateY(-2px) scale(1.04);
}

.entry-form {
    background: #fff;
    border-radius: 18px;
    box-shadow: var(--shadow-soft);
    max-width: 480px;
    margin: 40px auto;
    padding: 32px 28px 24px 28px;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: stretch;
}

.entry-form h2 {
    color: var(--color-text);
    font-size: 1.6rem;
    margin-bottom: 24px;
    text-align: center;
}

.entry-form label {
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 4px;
    margin-top: 12px;
}

.entry-form input[type="text"],
.entry-form input[type="date"],
.entry-form input[type="number"],
.entry-form textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #d0d0d0;
    border-radius: 6px;
    margin-bottom: 10px;
    font-size: 1rem;
    background: #f9f9fb;
    transition: border 0.2s;
    box-sizing: border-box;
}
.entry-form input:focus,
.entry-form textarea:focus {
    border: 1.5px solid var(--color-primary);
    outline: none;
}

.entry-form button { margin-top: 18px; }

.entries-list {
    background: #fff;
    border-radius: 18px;
    box-shadow: var(--shadow-soft);
    max-width: 600px;
    margin: 40px auto;
    padding: 32px 28px 24px 28px;
    box-sizing: border-box;
}
.entries-list h2 {
    color: var(--color-text);
    font-size: 1.6rem;
    margin-bottom: 24px;
    text-align: center;
}
.entries-list ul {
    list-style: none;
    padding: 0;
}
.entries-list li {
    background: var(--color-surface-2);
    border-radius: 10px;
    margin-bottom: 18px;
    padding: 18px 16px;
    box-shadow: 0 1px 4px rgba(44,62,80,0.04);
}
.entries-list strong {
    color: var(--color-primary);
    font-size: 1.1rem;
}
.entries-list em {
    color: var(--color-muted);
    font-size: 0.95rem;
}
.entries-list pre {
    background: none;
    color: #222;
    font-size: 1rem;
    margin: 8px 0 0 0;
    padding: 0;
    border: none;
}
.entries-list .empty {
    color: var(--color-muted);
    text-align: center;
    margin: 32px 0;
}

.navigation { display: flex; gap: 6px; padding: 8px 12px; }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: 8px;
    border: 1px solid transparent;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.15s ease, transform 0.08s ease, box-shadow 0.15s ease;
    box-sizing: border-box;
}

.btn:active { transform: translateY(1px); }
.btn:focus { outline: none; box-shadow: 0 0 0 3px var(--ring); }

.btn-sm { padding: 6px 10px; font-size: 0.85rem; border-radius: 6px; }
.btn-lg { padding: 14px 18px; font-size: 1rem; border-radius: 10px; }
.btn-block { display: flex; width: 100%; }

.btn-primary {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--ring);
}
.btn-primary:hover { background: var(--color-primary-600); }

.btn-secondary {
    background: #f0f0f5;
    color: var(--color-text);
    border-color: rgba(45,58,74,0.06);
}
.btn-secondary:hover { background: #e6e6ec; }

.btn-success {
    background: #28a745;
    color: #fff;
    border-color: rgba(40,167,69,0.12);
}
.btn-success:hover { background: #218838; }

.btn-danger {
    background: var(--color-danger);
    color: #fff;
    border-color: rgba(220,53,69,0.12);
}
.btn-danger:hover { background: var(--color-danger-600); }

.btn-warning {
    background: #ffc107;
    color: #3b2d00;
    border-color: rgba(255,193,7,0.2);
}
.btn-warning:hover { background: #e0a800; }

.btn-ghost {
    background: transparent;
    color: var(--color-primary);
    border-color: transparent;
    box-shadow: none;
}
.btn-ghost:hover { background: var(--color-primary-50); }

.btn .icon { display: inline-flex; align-items: center; }

button.btn, input[type="submit"].btn { appearance: none; -webkit-appearance: none; }

.btn-link-like { background: transparent; color: #2F2F7F; padding: 4px 2px; border-radius: 4px; }

.buttons a { text-decoration: none; }

/* Timely status pill */
.status-pill {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: 30px;
    letter-spacing: .5px;
    background: #e2e3e5;
    color: #333;
    border: 1px solid rgba(0,0,0,0.05);
}
.status-pill.connected {
    background: #d1f5d8;
    color: #1b5e20;
    border-color: #a5e6b2;
}

/* Alerts */
.alert {
    padding: 10px 12px;
    border-radius: 8px;
    margin-bottom: 10px;
    border: 1px solid transparent;
}
.alert-success {
    background-color: #d4edda;
    color: #155724;
    border-color: #c3e6cb;
}
.alert-error {
    background-color: #f8d7da;
    color: #721c24;
    border-color: #f5c6cb;
}
.alert-info {
    background-color: #d1ecf1;
    color: #0c5460;
    border-color: #bee5eb;
}

/* Responsive */
@media (max-width: 640px) {
    .top-nav { height: auto; padding: 10px 14px; gap: 10px; flex-wrap: wrap; }
    body.with-top-nav { padding-top: 100px; }
    .top-nav .nav-links { flex-wrap: wrap; gap: 8px; }
    .top-nav .user-email { display: none; }
    .entry-form, .entries-list { margin: 20px 12px; padding: 20px 16px; }
    .nav-box { margin: 24px 12px; padding: 20px 16px; }
}

/* Dark mode (auto) */
@media (prefers-color-scheme: dark) {
    :root {
        --color-bg: #0f1320;
        --color-surface: #161b2a;
        --color-surface-2: #1b2236;
        --color-text: #e6e9ef;
        --color-muted: #a2a9b8;
    }
    .top-nav { background: rgba(20, 24, 36, 0.55); border-bottom-color: rgba(255,255,255,0.08); }
    .entry-form, .entries-list { background: var(--color-surface); }
    .entries-list pre { color: #e6e9ef; }
    .btn-secondary { background: #222b44; color: #e6e9ef; }
    .btn-secondary:hover { background: #1e273f; }
}

/* Activities box */
.activity-box {
    background: var(--color-primary);
    color: #fff;
    padding: 10px 12px;
    border-radius: 8px;
    margin-top: 6px;
    border: 1px solid var(--color-primary-600);
    /* Preserve line breaks but collapse extra spaces/indentation */
    white-space: pre-line;
}
.activity-box a { color: #fff; text-decoration: underline; }
.activity-box code { background: rgba(255,255,255,0.12); padding: 2px 4px; border-radius: 4px; }
.activity-box p { margin: 0; }

/* Trainer Approval Styles */
.filter-section {
    background: var(--color-surface);
    padding: 24px;
    border-radius: 12px;
    box-shadow: var(--shadow-soft);
    margin-bottom: 24px;
}

.filter-section h2 {
    margin-top: 0;
    margin-bottom: 16px;
    color: var(--color-text);
}

.user-section {
    margin-top: 24px;
}

.user-section h2 {
    color: var(--color-text);
    margin-bottom: 20px;
}

.month-group {
    background: var(--color-surface);
    border-radius: 16px;
    box-shadow: var(--shadow-soft);
    padding: 20px;
    margin-bottom: 20px;
    border: 2px solid transparent;
}

.month-group.status-pending {
    border-color: #ffc107;
}

.month-group.status-approved {
    border-color: #28a745;
    background: rgba(40, 167, 69, 0.05);
}

.month-group.status-rejected {
    border-color: #dc3545;
    background: rgba(220, 53, 69, 0.05);
}

.month-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid rgba(0,0,0,0.1);
}

.month-header h3 {
    margin: 0;
    color: var(--color-text);
    font-size: 1.5rem;
}

.status-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
}

.status-pending .status-badge {
    background: #fff3cd;
    color: #856404;
}

.status-approved .status-badge {
    background: #d4edda;
    color: #155724;
}

.status-rejected .status-badge {
    background: #f8d7da;
    color: #721c24;
}

.status-icon {
    font-size: 1.2rem;
}

.month-summary {
    margin-bottom: 16px;
    color: var(--color-muted);
}

.month-summary p {
    margin: 0;
}

.toggle-details {
    margin-bottom: 12px;
}

.month-details {
    margin-top: 16px;
    overflow-x: auto;
}

.entries-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 12px;
}

.entries-table th,
.entries-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid rgba(0,0,0,0.1);
}

.entries-table th {
    background: var(--color-surface-2);
    font-weight: 600;
    color: var(--color-text);
}

.entries-table tr:hover {
    background: var(--color-surface-2);
}

.approval-actions {
    display: flex;
    gap: 12px;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid rgba(0,0,0,0.1);
}

.btn-success {
    background: #28a745;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 600;
    transition: background 0.2s;
}

.btn-success:hover {
    background: #218838;
}

.btn-danger {
    background: #dc3545;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 600;
    transition: background 0.2s;
}

.btn-danger:hover {
    background: #c82333;
}

.no-entries {
    text-align: center;
    color: var(--color-muted);
    padding: 40px;
    font-style: italic;
}

.info-text {
    text-align: center;
    color: var(--color-muted);
    padding: 40px;
    font-size: 1.1rem;
}

/* Dark mode adjustments for approval */
@media (prefers-color-scheme: dark) {
    .month-group.status-approved {
        background: rgba(40, 167, 69, 0.1);
    }
    
    .month-group.status-rejected {
        background: rgba(220, 53, 69, 0.1);
    }
    
    .month-header {
        border-bottom-color: rgba(255,255,255,0.1);
    }
    
    .entries-table th,
    .entries-table td {
        border-bottom-color: rgba(255,255,255,0.1);
    }
    
    .approval-actions {
        border-top-color: rgba(255,255,255,0.1);
    }
}