* {
    box-sizing: border-box;
}

:root {
    /* Primary & Accent Colors (Orange Theme) */
    --primary-light: #e58e27;
    --primary-dark: #c57725;

    /* UI Mapping */
    --primary: var(--primary-light);
    --primary-hover: var(--primary-dark);
    --accent: var(--primary-light);
    --accent-hover: var(--primary-dark);

    --bg: #f5f5f5;
    --nav-bg: #ffffff;
    --card-bg: rgba(255, 255, 255, 0.9);
    --text: #333333;
    --text-muted: #666666;
    --success: #10b981;
    --danger: #ef4444;
    --border: #e2e8f0;
}

[data-theme="dark"] {
    --bg: #121212;
    --nav-bg: #1e1e1e;
    --card-bg: rgba(30, 30, 30, 0.9);
    --text: #e0e0e0;
    --text-muted: #a0a0a0;
    --border: #333333;
}

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg);
    color: var(--text);
    margin: 0;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
    transition: background-color 0.3s, color 0.3s;
}

/* Particles Background */
#particles-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background-color: var(--bg);
    transition: background-color 0.3s;
}

/* Common UI Elements */
nav {
    background: var(--nav-bg);
    padding: 0.75rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: all 0.3s;
    backdrop-filter: blur(10px);
}

nav h1 {
    font-size: 1.5rem;
    color: var(--primary);
    margin: 0;
}

.container {
    padding: 2rem;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    box-sizing: border-box;
}

/* Liquid Glass Effect */
.liquid-glass {
    background: rgba(0, 0, 0, 0.05);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    color: var(--text);
    padding: 2.5rem;
    position: relative;
    overflow: hidden;
    margin-bottom: 2rem;
}

[data-theme="dark"] .liquid-glass {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.welcome-card {
    /* Legacy keeping for compatibility if used elsewhere, but we will use liquid-glass for staff dashboard */
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);

    padding: 2.5rem;
    border-radius: 1.5rem;
    color: white;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.welcome-card::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 300px;
    height: 100%;
    background: radial-gradient(circle at top right, rgba(255, 255, 255, 0.2) 0%, transparent 70%);
    pointer-events: none;
}

.welcome-card h2 {
    margin: 0;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.welcome-card p {
    margin: 0;
    opacity: 0.9;
    font-size: 1.1rem;
}

.btn-attendance {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    width: 100%;
    padding: 1rem;
    margin: 0;
    /* Reset margin for grid/flex control */
    border: 1px solid transparent;
    border-radius: 1rem;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(4px);
}

.btn-subtle-in {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.btn-subtle-in:hover:not(:disabled) {
    background: rgba(16, 185, 129, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.1);
}

.btn-subtle-in:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    filter: grayscale(0.8);
}

.btn-subtle-out {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.btn-subtle-out:hover {
    background: rgba(239, 68, 68, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.1);
}

/* Dark mode adjustments for buttons */
[data-theme="dark"] .btn-subtle-in {
    background: rgba(52, 211, 153, 0.1);
    color: #34d399;
    border-color: rgba(52, 211, 153, 0.2);
}

[data-theme="dark"] .btn-subtle-out {
    background: rgba(248, 113, 113, 0.1);
    color: #f87171;
    border-color: rgba(248, 113, 113, 0.2);
}

.card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 1.5rem;
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    border-color: rgba(229, 142, 39, 0.2);
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: var(--accent);
    color: white;
    text-decoration: none;
    border: none;
    border-radius: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
}

.btn:hover {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
}

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

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

/* Form Elements */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    font-size: 1rem;
    transition: all 0.2s;
    box-sizing: border-box;
    background: var(--nav-bg);
    color: var(--text);
}

/* Alerts */
.alert {
    padding: 1rem 1.5rem;
    border-radius: 1rem;
    margin-bottom: 1.5rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border: 1px solid transparent;
}

.alert-success {
    background-color: #d1fae5;
    color: #065f46;
    border-color: rgba(6, 95, 70, 0.1);
}

.alert-error {
    background-color: #fef2f2;
    color: #991b1b;
    border-color: rgba(153, 27, 27, 0.1);
}

.alert-warning {
    background-color: #fffbeb;
    color: #92400e;
    border-color: rgba(146, 64, 14, 0.1);
}

[data-theme="dark"] .alert-success {
    background-color: rgba(16, 185, 129, 0.15);
    color: #34d399;
    border-color: rgba(52, 211, 153, 0.2);
}

[data-theme="dark"] .alert-error {
    background-color: rgba(239, 68, 68, 0.15);
    color: #f87171;
    border-color: rgba(248, 113, 113, 0.2);
}

[data-theme="dark"] .alert-warning {
    background-color: rgba(245, 158, 11, 0.15);
    color: #fbbf24;
    border-color: rgba(251, 191, 36, 0.2);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(229, 142, 39, 0.1);
}

/* Navigation User Styles */
.nav-user {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-photo {
    width: 35px;
    height: 35px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--primary);
    flex-shrink: 0;
}

.logout-btn {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
    white-space: nowrap;
}

.logout-btn:hover {
    color: var(--primary);
}

/* Theme Toggle Styles */
.theme-selector {
    display: flex;
    background: var(--bg);
    padding: 3px;
    border-radius: 12px;
    border: 1px solid var(--border);
    gap: 2px;
}

.theme-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    border-radius: 9px;
    cursor: pointer;
    transition: all 0.2s;
}

.theme-btn:hover {
    color: var(--text);
    background: rgba(110, 110, 110, 0.1);
}

.theme-btn.active {
    background: var(--nav-bg);
    color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 1.5rem;
    margin-top: 2rem;
    align-items: stretch;
}

.assignment-info {
    background: var(--nav-bg);
    border: 1px solid var(--border);
    padding: 1.5rem;
    border-radius: 1.5rem;
    /* Match action-card radius */
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 0.5rem;
    text-align: center;
    box-shadow: var(--shadow-sm);
    height: 100%;
    margin: 0;
    /* Reset margin */
}

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

.action-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    height: 100%;
}

.action-card {
    /* Transparent or subtle inside the panel */
    background: var(--nav-bg);
    border: 1px solid var(--border);
    border-radius: 1.25rem;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    transition: all 0.2s;
}

.action-card:hover {
    transform: translateY(-2px);
    background: var(--card-bg);
    box-shadow: var(--shadow-sm);
    border-color: var(--primary);
}

@media (max-width: 480px) {
    .action-grid {
        grid-template-columns: 1fr;
    }
}