:root {
    --primary: #8B5CF6; /* Vibrant Purple */
    --primary-hover: #7C3AED;
    --secondary: #F43F5E; /* Vibrant Rose */
    --tertiary: #06B6D4; /* Vibrant Cyan */
    --accent: #F59E0B; /* Vibrant Amber */
    
    --background: #F1F5F9;
    --surface: rgba(255, 255, 255, 0.7);
    --text-main: #0F172A;
    --text-muted: #475569;
    --border: rgba(139, 92, 246, 0.2);
    
    --danger: #EF4444;
    --warning: #F59E0B;
    --success: #10B981;
    
    --radius-md: 16px;
    --radius-lg: 24px;
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 20px -5px rgba(139, 92, 246, 0.15), 0 4px 10px -2px rgba(139, 92, 246, 0.1);
    --shadow-lg: 0 25px 35px -5px rgba(244, 63, 94, 0.2), 0 10px 15px -5px rgba(244, 63, 94, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

/* Custom Colorful Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}
::-webkit-scrollbar-track {
    background: var(--background);
}
::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--primary), var(--secondary));
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--secondary), var(--accent));
}

body {
    background-color: var(--background);
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(139, 92, 246, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(244, 63, 94, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(6, 182, 212, 0.1) 0%, transparent 60%);
    background-attachment: fixed;
    color: var(--text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* Glassmorphism utility */
.glass {
    background: var(--surface);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.6);
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.login-card {
    background: var(--surface);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.8);
    padding: 3rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 450px;
    text-align: center;
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.login-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 30px 40px -10px rgba(139, 92, 246, 0.3);
}

.login-card h1 {
    margin-bottom: 0.5rem;
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-main);
}

.login-card p {
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    font-weight: 500;
}

/* Admin Dashboard Specific Overrides */
.dashboard-container {
    display: flex;
    min-height: 100vh;
}

.dashboard-container .sidebar {
    background: linear-gradient(180deg, #0F172A, #1E1B4B);
    color: white;
    border-right: 1px solid rgba(255,255,255,0.1);
    box-shadow: 4px 0 20px rgba(0,0,0,0.2);
    position: relative;
    overflow: hidden;
}

.dashboard-container .sidebar::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; height: 300px;
    background: radial-gradient(circle at top right, rgba(139, 92, 246, 0.4), transparent 70%);
    pointer-events: none;
}

.dashboard-container .sidebar h2 {
    color: #E2E8F0 !important;
    text-shadow: 0 2px 10px rgba(255,255,255,0.2);
    position: relative;
    z-index: 1;
}

.dashboard-container .sidebar .nav-link {
    color: #CBD5E1;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    z-index: 1;
    margin-bottom: 0.5rem;
}

.dashboard-container .sidebar .nav-link:hover {
    background: rgba(255,255,255,0.08);
    color: white;
    transform: translateX(8px);
    box-shadow: -4px 0 0 var(--tertiary);
}

.dashboard-container .sidebar .nav-link.active {
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    color: white;
    box-shadow: 0 4px 15px rgba(244, 63, 94, 0.4);
    border-radius: var(--radius-md);
    font-weight: 700;
}

.dashboard-container .main-content {
    flex: 1;
    padding: 3rem;
}

.dashboard-container .header h1 {
    font-size: 2.2rem;
    font-weight: 800;
    background: linear-gradient(to right, var(--primary), var(--secondary), var(--accent));
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradientShine 5s linear infinite;
}

@keyframes gradientShine {
    to { background-position: 200% center; }
}

.dashboard-container .card {
    background: var(--surface);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.8);
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-lg);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.dashboard-container .card::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--tertiary));
    opacity: 0;
    transition: opacity 0.4s ease;
}

.dashboard-container .card:hover {
    transform: translateY(-5px) scale(1.01);
    box-shadow: var(--shadow-lg);
    border-color: rgba(139, 92, 246, 0.4);
}

.dashboard-container .card:hover::after {
    opacity: 1;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.6rem;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: 0.5px;
}

.form-input {
    width: 100%;
    padding: 0.9rem 1.2rem;
    border: 2px solid rgba(255, 255, 255, 0.8);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: rgba(255, 255, 255, 0.9);
    color: var(--text-main);
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.02);
}

.form-input:focus {
    outline: none;
    background: white;
    border-color: var(--tertiary);
    box-shadow: 0 0 0 5px rgba(6, 182, 212, 0.2);
    transform: translateY(-1px);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 0.9rem 1.8rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    background-size: 200% auto;
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    box-shadow: 0 8px 20px rgba(244, 63, 94, 0.3);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    text-decoration: none;
}

.btn:hover {
    background-position: right center;
    transform: translateY(-3px);
    box-shadow: 0 12px 25px rgba(244, 63, 94, 0.5);
}

.btn:active {
    transform: translateY(1px);
}

/* Tables */
table {
    border-collapse: separate;
    border-spacing: 0;
    width: 100%;
    margin-top: 1.5rem;
}

th, td {
    padding: 1.2rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
    transition: background 0.3s ease;
}

th {
    background: rgba(139, 92, 246, 0.08);
    font-weight: 800;
    color: var(--primary);
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 1px;
}

th:first-child { border-top-left-radius: 12px; }
th:last-child { border-top-right-radius: 12px; }

tr {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

tr:hover {
    transform: scale(1.01);
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    background: white;
    position: relative;
    z-index: 1;
    border-radius: 8px;
}

tr:hover td {
    border-bottom-color: transparent;
}

/* Alert */
.alert {
    padding: 1.2rem;
    border-radius: var(--radius-md);
    margin-bottom: 2rem;
    font-size: 0.95rem;
    font-weight: 600;
    border-left: 5px solid transparent;
    box-shadow: var(--shadow-sm);
}
.alert-error {
    background: linear-gradient(to right, #FEF2F2, #ffffff);
    color: var(--danger);
    border-left-color: var(--danger);
}
.alert-success {
    background: linear-gradient(to right, #ECFDF5, #ffffff);
    color: var(--success);
    border-left-color: var(--success);
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .dashboard-container {
        flex-direction: column;
    }
    
    .dashboard-container .sidebar {
        width: 100%;
        height: auto;
        padding: 1rem;
        border-right: none;
        border-bottom: 1px solid rgba(255,255,255,0.1);
        display: flex;
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    
    .dashboard-container .sidebar h2 {
        width: 100%;
        margin-bottom: 1rem !important;
        text-align: center;
    }
    
    .dashboard-container .sidebar nav {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        width: 100%;
        gap: 0.5rem;
    }
    
    .dashboard-container .sidebar .nav-link {
        margin-bottom: 0;
        padding: 0.5rem 0.8rem;
        font-size: 0.85rem;
        text-align: center;
        flex: 1 1 calc(50% - 0.5rem);
    }
    
    .dashboard-container .main-content {
        padding: 1rem;
    }
    
    .dashboard-container .header h1 {
        font-size: 1.5rem;
        text-align: center;
    }
    
    .dashboard-container .header {
        flex-direction: column;
        gap: 1rem;
        align-items: center;
    }
    
    .form-row {
        flex-direction: column;
    }
    
    table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }
    
    .login-card {
        padding: 2rem 1.5rem;
    }
}