/* Import Google Font */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* Main Styles - Light & Soothing Theme */
:root {
    --primary: #4a90e2;
    /* Soft blue */
    --primary-light: #6ba5e9;
    /* Lighter blue */
    --primary-soft: #e8f0fe;
    /* Very light blue background */
    --primary-gradient: linear-gradient(135deg, #4a90e2 0%, #5cb8b2 100%);

    --secondary: #5cb8b2;
    /* Mint green */
    --secondary-light: #7fcdc7;
    /* Light mint */
    --secondary-soft: #e2f3f1;
    /* Very light mint background */

    --success: #52b9a1;
    /* Soft green */
    --success-light: #c5e9e0;
    --info: #61a9c2;
    /* Light teal */
    --warning: #f5b342;
    /* Warm yellow */
    --danger: #e88a8a;
    /* Soft red */

    --dark: #4a5568;
    /* Soft dark gray for text */
    --gray-600: #718096;
    --gray-500: #a0aec0;
    --gray-400: #cbd5e0;
    --gray-300: #e2e8f0;
    --gray-200: #edf2f7;
    --gray-100: #f7fafc;

    --white: #ffffff;
    --body-bg: linear-gradient(135deg, #f6faff 0%, #f0f7fa 100%);
    --card-bg: rgba(255, 255, 255, 0.95);

    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    --border-radius-xl: 20px;

    --box-shadow-sm: 0 4px 12px rgba(74, 144, 226, 0.08);
    --box-shadow-md: 0 8px 20px rgba(74, 144, 226, 0.12);
    --box-shadow-lg: 0 12px 30px rgba(74, 144, 226, 0.15);

    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--body-bg);
    min-height: 100vh;
    color: var(--dark);
    line-height: 1.6;
}



/* Navbar - Light & Modern */
.navbar {
    background: rgba(255, 255, 255, 0.9) !important;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(74, 144, 226, 0.1);
    box-shadow: 0 4px 20px rgba(74, 144, 226, 0.05);
    padding: 12px 0;
}

.navbar.bg-dark {
    background: rgba(255, 255, 255, 0.9) !important;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.4rem;
    color: var(--primary) !important;
    display: flex;
    align-items: center;
    gap: 10px;
}

.navbar-brand img {
    height: 40px;
    filter: drop-shadow(0 2px 4px rgba(74, 144, 226, 0.2));
}

.nav-link {
    color: var(--dark) !important;
    font-weight: 500;
    padding: 8px 16px !important;
    border-radius: var(--border-radius-md);
    transition: var(--transition);
}

.nav-link:hover {
    background: var(--primary-soft);
    color: var(--primary) !important;
}

.navbar .btn-primary {
    background: var(--primary-gradient);
    border: none;
    color: white;
    padding: 8px 20px;
    border-radius: var(--border-radius-lg);
    font-weight: 600;
    box-shadow: var(--box-shadow-sm);
}

/* Cards */
.card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(74, 144, 226, 0.1);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow-sm);
    transition: var(--transition);
    margin-bottom: 24px;
    overflow: hidden;
}

.card:hover {
    box-shadow: var(--box-shadow-md);
    transform: translateY(-4px);
    border-color: rgba(74, 144, 226, 0.2);
}

.card-header {
    background: linear-gradient(120deg, var(--primary-soft) 0%, var(--white) 100%);
    border-bottom: 1px solid rgba(74, 144, 226, 0.1);
    color: var(--dark);
    font-weight: 600;
    padding: 12px 16px;
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0 !important;
}

/* Fix visibility for colored headers */
.card-header.bg-primary {
    background: linear-gradient(135deg, #4a90e2 0%, #357abd 100%) !important;
    color: white !important;
}

.card-header.bg-success {
    background: linear-gradient(135deg, #52b9a1 0%, #3d8b79 100%) !important;
    color: white !important;
}

.card-header.bg-info {
    background: linear-gradient(135deg, #61a9c2 0%, #4a8296 100%) !important;
    color: white !important;
}

.card-header.bg-warning {
    background: linear-gradient(135deg, #f5b342 0%, #d49a37 100%) !important;
    color: white !important;
}

.card-header.bg-danger {
    background: linear-gradient(135deg, #e88a8a 0%, #c46d6d 100%) !important;
    color: white !important;
}

.card-header.bg-dark {
    background: linear-gradient(135deg, #2d4059 0%, #1a2636 100%) !important;
    color: white !important;
}

/* Ensure icons in colored headers are white */
.card-header[class*="bg-"]:not(.bg-light) i {
    color: white !important;
}

.card-header i {
    color: var(--primary);
    margin-right: 8px;
}

.card-body {
    padding: 16px;
}

/* Buttons */
.btn {
    border-radius: var(--border-radius-md);
    padding: 10px 24px;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    font-size: 0.95rem;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn i {
    font-size: 1rem;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.2);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #3a7bc8 0%, #4ea69f 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(74, 144, 226, 0.3);
}

.btn-outline-primary {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
    box-shadow: none;
}

.btn-outline-primary:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
}

.btn-success {
    background: linear-gradient(135deg, #52b9a1 0%, #6bc5b1 100%);
    color: white;
}

.btn-info {
    background: linear-gradient(135deg, #61a9c2 0%, #7dc1d9 100%);
    color: white;
}

.btn-warning {
    background: linear-gradient(135deg, #f5b342 0%, #f7c45e 100%);
    color: white;
}

.btn-lg {
    padding: 12px 32px;
    font-size: 1.1rem;
}

/* Forms */
.form-control,
.form-select {
    border-radius: var(--border-radius-md);
    border: 2px solid var(--gray-200);
    padding: 12px 16px;
    transition: var(--transition);
    background: var(--white);
    font-size: 0.95rem;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(74, 144, 226, 0.1);
    outline: none;
}

.form-label {
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
    font-size: 0.95rem;
}

/* Tables */
.table {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--box-shadow-sm);
    margin-bottom: 0;
}

.table thead th {
    background: var(--primary-soft);
    color: var(--dark);
    font-weight: 600;
    border-bottom: 2px solid var(--primary-light);
    padding: 16px;
    font-size: 0.95rem;
}

.table tbody td {
    padding: 16px;
    vertical-align: middle;
    border-bottom: 1px solid var(--gray-200);
}

.table tbody tr:hover {
    background: rgba(74, 144, 226, 0.04);
}

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

/* Badges */
.badge {
    padding: 6px 12px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.8rem;
    letter-spacing: 0.3px;
}

.badge.bg-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%) !important;
}

.badge.bg-success {
    background: linear-gradient(135deg, #52b9a1 0%, #6bc5b1 100%) !important;
}

.badge.bg-warning {
    background: linear-gradient(135deg, #f5b342 0%, #f7c45e 100%) !important;
    color: var(--dark) !important;
}

.badge.bg-info {
    background: linear-gradient(135deg, #61a9c2 0%, #7dc1d9 100%) !important;
}

.badge.bg-secondary {
    background: linear-gradient(135deg, #a0aec0 0%, #b8c2cc 100%) !important;
}

/* Alerts */
.alert {
    border-radius: var(--border-radius-lg);
    border: none;
    padding: 16px 24px;
    box-shadow: var(--box-shadow-sm);
    display: flex;
    align-items: center;
    gap: 12px;
}

.alert-success {
    background: linear-gradient(135deg, #e1f2e9 0%, #e8f6f0 100%);
    color: #2c6e5c;
}

.alert-danger {
    background: linear-gradient(135deg, #fee9e9 0%, #fef0f0 100%);
    color: #a15c5c;
}

.alert-info {
    background: linear-gradient(135deg, #e1effa 0%, #e8f2fc 100%);
    color: #3a6b8c;
}

.alert-warning {
    background: linear-gradient(135deg, #fff4e0 0%, #fff9e6 100%);
    color: #8a6e3a;
}

/* Stats Cards */
.stat-card {
    background: var(--white);
    border-radius: var(--border-radius-xl);
    padding: 16px;
    text-align: center;
    box-shadow: var(--box-shadow-sm);
    transition: var(--transition);
    border: 1px solid rgba(74, 144, 226, 0.1);
}

.stat-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--box-shadow-lg);
    border-color: rgba(74, 144, 226, 0.2);
}

.stat-card i {
    font-size: 2.5rem;
    margin-bottom: 12px;
    opacity: 0.9;
}

.stat-card h3 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--dark);
    margin: 12px 0 4px;
}

.stat-card p {
    color: var(--gray-600);
    font-weight: 500;
    margin: 0;
}

/* Dashboard Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-item {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    box-shadow: var(--box-shadow-sm);
    display: flex;
    align-items: center;
    gap: 16px;
    border: 1px solid rgba(74, 144, 226, 0.1);
    transition: var(--transition);
}

.stat-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--box-shadow-md);
}

.stat-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.8rem;
}

.stat-content h3 {
    font-size: 1.8rem;
    font-weight: 700;
    margin: 0;
    color: var(--dark);
}

.stat-content p {
    margin: 4px 0 0 0;
    color: var(--gray-600);
    font-weight: 500;
}

.dashboard-header {
    background: var(--white);
    border-radius: var(--border-radius-xl);
    padding: 16px 24px;
    margin-bottom: 20px;
    box-shadow: var(--box-shadow-sm);
    border: 1px solid rgba(74, 144, 226, 0.1);
}

.dashboard-header h1,
.dashboard-header h3 {
    color: var(--dark);
    font-weight: 700;
    margin-bottom: 8px;
}

.dashboard-header p {
    color: var(--gray-600);
    font-size: 1rem;
    margin: 0;
}

/* Hero Section */
.hero-section {
    background: var(--white);
    border-radius: var(--border-radius-xl);
    margin: 20px;
    padding: 48px !important;
    box-shadow: var(--box-shadow-md);
    border: 1px solid rgba(74, 144, 226, 0.1);
}

.hero-section h1 {
    color: var(--dark);
    font-weight: 800;
    line-height: 1.2;
}

.hero-section .lead {
    color: var(--gray-600);
    font-size: 1.2rem;
}

/* Feature Cards */
.feature-card {
    background: var(--white);
    border-radius: var(--border-radius-xl);
    padding: 32px;
    text-align: center;
    box-shadow: var(--box-shadow-sm);
    transition: var(--transition);
    border: 1px solid rgba(74, 144, 226, 0.1);
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--box-shadow-lg);
}

.feature-icon i {
    font-size: 2.8rem;
    margin-bottom: 20px;
}

.feature-card h4 {
    color: var(--dark);
    font-weight: 700;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--gray-600);
    margin: 0;
}

/* Footer */
.footer {
    background: var(--white) !important;
    border-top: 1px solid rgba(74, 144, 226, 0.1);
    color: var(--dark);
    padding: 48px 0 24px;
    margin-top: 60px;
}

.footer.bg-dark {
    background: var(--white) !important;
}

.footer h5 {
    color: var(--dark);
    font-weight: 700;
    margin-bottom: 20px;
}

.footer p,
.footer ul li a {
    color: var(--gray-600) !important;
}

.footer ul li a:hover {
    color: var(--primary) !important;
    text-decoration: none;
}

.footer hr {
    background: var(--gray-300) !important;
    margin: 32px 0;
}

/* Exam Cards */
.exam-card {
    background: var(--white);
    border: 1px solid rgba(74, 144, 226, 0.1);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    transition: var(--transition);
}

.exam-card:hover {
    border-color: var(--primary-light);
    box-shadow: var(--box-shadow-md);
    transform: translateY(-4px);
}

.exam-card.upcoming {
    border-left: 4px solid var(--primary);
}

.exam-card.ongoing {
    border-left: 4px solid var(--warning);
}

.exam-card.completed {
    border-left: 4px solid var(--success);
}

/* Calendar */
.exam-schedule-calendar {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    box-shadow: var(--box-shadow-sm);
}

.calendar-day {
    text-align: center;
    padding: 12px 8px;
    border-radius: var(--border-radius-md);
    transition: var(--transition);
}

.calendar-day.has-exam {
    background: var(--primary-soft);
    border: 1px solid var(--primary-light);
    color: var(--primary);
    font-weight: 600;
}

.calendar-day.today {
    background: linear-gradient(135deg, #fff4e0 0%, #ffffff 100%);
    border: 2px solid var(--warning);
    font-weight: 700;
}

/* Modals */
.modal-content {
    border-radius: var(--border-radius-xl);
    border: none;
    box-shadow: var(--box-shadow-lg);
}

.modal-header {
    background: linear-gradient(120deg, var(--primary-soft) 0%, var(--white) 100%);
    border-radius: var(--border-radius-xl) var(--border-radius-xl) 0 0;
    border-bottom: 1px solid rgba(74, 144, 226, 0.1);
    padding: 24px;
}

.modal-header .modal-title {
    color: var(--dark);
    font-weight: 700;
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    background: var(--gray-100);
    border-radius: 0 0 var(--border-radius-xl) var(--border-radius-xl);
    border-top: 1px solid rgba(74, 144, 226, 0.1);
    padding: 20px 24px;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-section {
        padding: 32px !important;
        text-align: center;
    }

    .stat-card {
        margin-bottom: 16px;
    }

    .stat-item {
        padding: 20px;
    }

    .dashboard-header {
        padding: 24px;
    }

    .card-body {
        padding: 20px;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.6s ease-out;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
    border-radius: 20px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--secondary-light) 100%);
    border-radius: 20px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
}

/* List Groups */
.list-group-item {
    border: 1px solid rgba(74, 144, 226, 0.1);
    border-radius: var(--border-radius-md) !important;
    margin-bottom: 8px;
    transition: var(--transition);
}

.list-group-item:hover {
    background: var(--primary-soft);
    border-color: var(--primary-light);
}

.list-group-item-action {
    color: var(--dark);
}

/* Event Items */
.event-item {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.event-date {
    background: var(--primary-gradient) !important;
    border-radius: var(--border-radius-md);
    padding: 8px !important;
    min-width: 70px;
}

.event-date .day {
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1;
}

.event-date .month {
    font-size: 0.8rem;
    opacity: 0.9;
}

.event-details {
    flex: 1;
}

.event-details h6 {
    color: var(--dark);
    font-weight: 700;
    margin-bottom: 4px;
}

/* Dropdown */
.dropdown-menu {
    border: 1px solid rgba(74, 144, 226, 0.1);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow-md);
    padding: 8px;
}

.dropdown-item {
    border-radius: var(--border-radius-md);
    padding: 10px 16px;
    transition: var(--transition);
    color: var(--dark);
}

.dropdown-item:hover {
    background: var(--primary-soft);
    color: var(--primary);
}

.dropdown-divider {
    border-top: 1px solid rgba(74, 144, 226, 0.1);
    margin: 8px 0;
}