:root {
    --primary: #4F46E5;
    --danger: #EF4444;
    --bg: #F8FAFC;
    --surface: #FFFFFF;
    --text-main: #1E293B;
    --text-muted: #64748B;
    --border: #E2E8F0;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', 'Noto Sans Sinhala', sans-serif;
}

body {
    background-color: var(--bg);
    color: var(--text-main);
    padding: 2rem;
}

.dashboard {
    max-width: 1200px;
    margin: 0 auto;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.sub-title {
    font-size: 1rem;
    color: var(--text-muted);
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.header h1 {
    font-size: 1.875rem;
    font-weight: 700;
}

.clear-btn {
    background: var(--danger);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.clear-btn:hover {
    background: #DC2626;
}

.action-btn {
    background: var(--primary);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
    margin-right: 0.5rem;
}

.action-btn:hover {
    background: #4338CA;
}

.action-btn.pdf-btn {
    background: #10B981;
}

.action-btn.pdf-btn:hover {
    background: #059669;
}

.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--surface);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border);
}

.stat-card h3 {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 600;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.stat-card p {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
}

#happyStats { color: #D97706; }
#veryHappyStats { color: #059669; }
#badStats { color: #DC2626; }

.table-container {
    background: var(--surface);
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border);
    overflow-x: auto;
}

.review-table {
    width: 100%;
    border-collapse: collapse;
}

.review-table th, .review-table td {
    padding: 1rem 1.5rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.review-table th {
    background: #F1F5F9;
    font-weight: 600;
    color: var(--text-muted);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
}

.review-table tr:last-child td {
    border-bottom: none;
}

.review-table tbody tr:hover {
    background: #F8FAFC;
}

.badge-bad { background: #FEE2E2; color: #DC2626; padding: 6px 10px; border-radius: 9999px; font-size: 0.75rem; font-weight: 600; white-space: nowrap;}
.badge-happy { background: #FEF3C7; color: #D97706; padding: 6px 10px; border-radius: 9999px; font-size: 0.75rem; font-weight: 600; white-space: nowrap;}
.badge-very-happy { background: #D1FAE5; color: #059669; padding: 6px 10px; border-radius: 9999px; font-size: 0.75rem; font-weight: 600; white-space: nowrap;}

.footer {
    text-align: center;
    margin-top: 2.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
}

@media (max-width: 768px) {
    .header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
}

@media print {
    .header-actions {
        display: none !important;
    }
    body {
        padding: 0;
        background: white;
    }
    .dashboard {
        max-width: 100%;
        margin: 0;
    }
    .stat-card {
        box-shadow: none;
        border: 1px solid var(--border);
    }
    .table-container {
        box-shadow: none;
        border: 1px solid var(--border);
    }
    .footer {
        display: none;
    }
}