@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Manrope:wght@600;700;800&display=swap');

:root {
    /* Color Tokens - Material Based */
    --background: #f7f9fb;
    --surface-container-low: #f2f4f6;
    --surface-container-lowest: #ffffff;
    --surface-container-high: #e9ecef;
    --primary: #2f1bc8;
    --primary-container: #493fdf;
    --on-surface: #191c1e;
    --on-surface-variant: #44474e;
    --outline-variant: rgba(197, 197, 212, 0.2);
    --success: #2e7d32;
    --error: #b3261e;
    --tertiary: #6c3400; /* Ochre for warnings */
    
    /* Typography Scales */
    --font-display: 'Manrope', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* Radius */
    --radius-sm: 4px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Gradients */
    --primary-gradient: linear-gradient(135deg, var(--primary) 0%, var(--primary-container) 100%);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-body);
    background-color: var(--background);
    color: var(--on-surface);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

h1, h2, h3, .display-sm {
    font-family: var(--font-display);
    font-weight: 700;
    color: var(--on-surface);
}

.headline-lg {
    font-size: 2rem;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-sm);
}

.body-md {
    font-size: 0.875rem;
    color: var(--on-surface-variant);
}

/* Layout Helpers */
.container {
    padding: var(--spacing-lg);
    max-width: 600px;
    margin: 0 auto;
}

/* Cards (Fluid Professional Style) */
.card {
    background: var(--surface-container-lowest);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    transition: transform 0.2s ease;
    /* No borders - use depth */
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-xl);
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: var(--font-body);
    width: 100%;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
}

.btn-primary:active {
    transform: scale(0.98);
    opacity: 0.9;
}

/* Form Elements */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    color: var(--on-surface-variant);
}

.form-control {
    width: 100%;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: none;
    background: var(--surface-container-high);
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--on-surface);
    transition: box-shadow 0.2s ease;
}

.form-control:focus {
    outline: none;
    box-shadow: 0 0 0 4px rgba(47, 27, 200, 0.08); /* Primary glow 8% */
}

/* Animations */
@keyframes pulse {
    0% { transform: scale(1); opacity: 0.8; }
    50% { transform: scale(1.2); opacity: 1; }
    100% { transform: scale(1); opacity: 0.8; }
}

.pulse-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--tertiary);
    animation: pulse 2s infinite ease-in-out;
}

/* Bottom Navigation */
.bottom-nav {
    position: fixed;
    bottom: 20px;
    left: 20px;
    right: 20px;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    height: 64px;
    border-radius: 32px;
    display: flex;
    justify-content: space-around;
    align-items: center;
    z-index: 1000;
    box-shadow: 0 8px 24px rgba(25, 28, 30, 0.08);
}

.nav-item {
    color: var(--on-surface-variant);
    text-decoration: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 0.75rem;
    font-weight: 500;
}

.nav-item.active {
    color: var(--primary);
}

.nav-icon {
    font-size: 1.5rem;
    margin-bottom: 2px;
}
/* Admin Dashboard Specifics */
.dashboard-hero {
    background: var(--primary-gradient);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    color: white;
    margin-bottom: var(--spacing-xl);
    position: relative;
    overflow: hidden;
}

.dashboard-hero::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 300px;
    height: 300px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
}

.pulse-widget {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    display: inline-block;
    margin-top: var(--spacing-lg);
}

.stat-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: var(--surface-container-lowest);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    position: relative;
    box-shadow: 0 4px 12px rgba(0,0,0,0.02);
}

.stat-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: var(--radius-lg);
    bottom: var(--radius-lg);
    width: 4px;
    border-radius: 0 4px 4px 0;
}

.stat-card.total::before { background: var(--primary); }
.stat-card.present::before { background: var(--success); }
.stat-card.absent::before { background: var(--error); }
.stat-card.leave::before { background: var(--tertiary); }

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: var(--spacing-md);
    font-size: 1.25rem;
}

.stat-card.total .stat-icon { background: rgba(47, 27, 200, 0.1); color: var(--primary); }
.stat-card.present .stat-icon { background: rgba(46, 125, 50, 0.1); color: var(--success); }
.stat-card.absent .stat-icon { background: rgba(179, 38, 30, 0.1); color: var(--error); }
.stat-card.leave .stat-icon { background: rgba(108, 52, 0, 0.1); color: var(--tertiary); }

/* Trends Chart */
.chart-container {
    padding: var(--spacing-lg);
    background: var(--surface-container-lowest);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-xl);
}

.bar-chart {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    height: 150px;
    padding-top: var(--spacing-xl);
    margin-top: var(--spacing-md);
}

.bar-wrapper {
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    align-items: center;
    height: 100%;
    flex-grow: 1;
}

.bar {
    width: 24px;
    background: var(--primary);
    border-radius: 6px 6px 0 0;
    transition: height 0.3s ease;
    opacity: 0.8;
}

.bar.faint {
    background: var(--surface-container-high);
}

.bar-label {
    font-size: 0.65rem;
    color: var(--on-surface-variant);
    margin-top: var(--spacing-xs);
    font-weight: 600;
}

/* Recent Logs */
.logs-section {
    background: var(--surface-container-low);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
}

.log-item {
    background: var(--surface-container-lowest);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    margin-right: var(--spacing-md);
    object-fit: cover;
}

.badge {
    font-size: 0.65rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 10px;
    text-transform: uppercase;
}

.badge-success { background: rgba(46, 125, 50, 0.1); color: var(--success); }
.badge-warning { background: rgba(108, 52, 0, 0.1); color: var(--tertiary); }
.badge-error { background: rgba(179, 38, 30, 0.1); color: var(--error); }