/* Dark Mode Custom Styles */
@keyframes slideUp {
    from { 
        transform: translateY(20px); 
        opacity: 0; 
    }
    to { 
        transform: translateY(0); 
        opacity: 1; 
    }
}

@keyframes fadeIn {
    from { 
        opacity: 0; 
    }
    to { 
        opacity: 1; 
    }
}

/* Dark Mode Toggle Animation */
#darkModeToggle {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

#darkModeToggle:hover {
    transform: scale(1.1);
}

#darkModeIcon {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Mode Icons */
.dark #darkModeIcon:before {
    content: "\f185"; /* sun icon */
}

/* Smooth transitions for dark mode */
* {
    transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

/* Custom scrollbar for dark mode */
.dark ::-webkit-scrollbar {
    width: 8px;
}

.dark ::-webkit-scrollbar-track {
    background: #374151;
    border-radius: 4px;
}

.dark ::-webkit-scrollbar-thumb {
    background: #6B7280;
    border-radius: 4px;
}

.dark ::-webkit-scrollbar-thumb:hover {
    background: #9CA3AF;
}

/* Dark mode notification styles */
.notification-dark {
    background: rgba(31, 41, 55, 0.95);
    color: white;
    border: 1px solid #374151;
}

/* Payment method cards dark mode enhancement */
.dark .payment-method-card:hover {
    background-color: rgba(55, 65, 81, 0.8);
}

/* Focus ring enhancement for dark mode */
.dark input:focus,
.dark select:focus,
.dark button:focus {
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.5);
}

/* Animation classes */
.animate-slide-up {
    animation: slideUp 0.3s ease-out;
}

.animate-fade-in {
    animation: fadeIn 0.2s ease-in;
}

/* Dark mode toggle button special effects */
#darkModeToggle {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.dark #darkModeToggle {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

#darkModeToggle:active {
    transform: scale(0.95);
}

/* Gradient text enhancement for dark mode */
.dark .bg-clip-text {
    background-clip: text;
    -webkit-background-clip: text;
}

/* Form validation error styles for dark mode */
.dark .border-red-500 {
    border-color: #EF4444 !important;
}

.dark .ring-red-500 {
    --tw-ring-color: #EF4444 !important;
}

/* Success message styles for dark mode */
.dark .text-green-600 {
    color: #10B981 !important;
}

.dark .text-green-400 {
    color: #34D399 !important;
}

/* Custom dark mode variables */
:root {
    --dark-bg-primary: #111827;
    --dark-bg-secondary: #1F2937;
    --dark-text-primary: #F9FAFB;
    --dark-text-secondary: #D1D5DB;
    --dark-border: #374151;
}

/* Enhanced dark mode components */
.dark-card {
    background: var(--dark-bg-secondary);
    border: 1px solid var(--dark-border);
    color: var(--dark-text-primary);
}

.dark-input {
    background: var(--dark-bg-secondary);
    border: 1px solid var(--dark-border);
    color: var(--dark-text-primary);
}

.dark-input:focus {
    border-color: #3B82F6;
    box-shadow: 0 0 0 1px #3B82F6;
}

/* Loading overlay dark mode */
.dark #loadingOverlay {
    background: rgba(0, 0, 0, 0.7);
}

/* Modal backdrop enhancement */
.dark .modal-backdrop {
    background: rgba(0, 0, 0, 0.8);
}

/* Typography enhancements for dark mode */
.dark h1, .dark h2, .dark h3, .dark h4, .dark h5, .dark h6 {
    color: var(--dark-text-primary);
}

.dark p, .dark span {
    color: var(--dark-text-secondary);
}

/* Button hover effects for dark mode */
.dark button:hover {
    transform: translateY(-1px);
}

/* Stats cards enhancement */
.dark .stats-card {
    background: linear-gradient(135deg, var(--dark-bg-secondary) 0%, rgba(55, 65, 81, 0.8) 100%);
    border: 1px solid var(--dark-border);
}

/* Transaction list enhancements */
.dark .transaction-item {
    background: var(--dark-bg-secondary);
    border: 1px solid var(--dark-border);
}

.dark .transaction-item:hover {
    border-color: #3B82F6;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.1);
}

/* Enhanced Header Styles */
.nav-link {
    position: relative;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #3B82F6, #8B5CF6);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-link.active::after {
    width: 100%;
}

/* Mobile Navigation */
.mobile-nav-link {
    transition: all 0.3s ease;
}

.mobile-nav-link:hover {
    transform: translateX(4px);
}

/* Dark Mode Toggle Enhancement */
#darkModeToggle {
    position: relative;
    overflow: hidden;
}

#darkModeToggle::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.2) 0%, transparent 70%);
    transition: all 0.3s ease;
    transform: translate(-50%, -50%);
    border-radius: 50%;
}

#darkModeToggle:hover::before {
    width: 120%;
    height: 120%;
}

/* Tooltip Animation */
#darkModeToggle .tooltip {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateY(4px);
}

#darkModeToggle:hover .tooltip {
    transform: translateY(0);
}

/* Header Background Effects */
header nav {
    position: relative;
    overflow: hidden;
}

header nav::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.03) 0%, transparent 70%);
    animation: float 20s ease-in-out infinite;
    pointer-events: none;
}

@keyframes float {
    0%, 100% { transform: rotate(0deg) scale(1); }
    50% { transform: rotate(180deg) scale(1.1); }
}

/* Hero Section Animations */
.hero-badge {
    animation: fadeInUp 0.6s ease-out forwards;
    opacity: 0;
    transform: translateY(20px);
}

.hero-badge:nth-child(1) { animation-delay: 0.1s; }
.hero-badge:nth-child(2) { animation-delay: 0.2s; }
.hero-badge:nth-child(3) { animation-delay: 0.3s; }
.hero-badge:nth-child(4) { animation-delay: 0.4s; }

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

/* Quick Stats Animation */
.stats-card {
    transition: all 0.3s ease;
}

.stats-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.dark .stats-card:hover {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

/* Status Indicator Animation */
.status-indicator {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Mobile Menu Slide Animation */
#mobileMenu {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: top;
}

#mobileMenu.hidden {
    transform: scaleY(0);
    opacity: 0;
}

#mobileMenu:not(.hidden) {
    transform: scaleY(1);
    opacity: 1;
}

/* Enhanced Backdrop Blur */
.backdrop-blur-header {
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
}

/* Dark Mode Specific Enhancements */
.dark header nav {
    background: rgba(31, 41, 55, 0.85);
    border-color: rgba(75, 85, 99, 0.6);
}

.dark .hero-section {
    background: linear-gradient(135deg, 
        rgba(59, 130, 246, 0.1) 0%, 
        rgba(139, 92, 246, 0.1) 50%, 
        rgba(99, 102, 241, 0.1) 100%);
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    header nav {
        padding: 1rem;
    }
    
    .hero-section h1 {
        font-size: 2.5rem;
    }
    
    .feature-badges {
        flex-direction: column;
        align-items: center;
    }
}

/* Print Styles */
@media print {
    header nav,
    #darkModeToggle,
    #mobileMenuToggle {
        display: none !important;
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .nav-link {
        border: 1px solid transparent;
    }
    
    .nav-link:hover,
    .nav-link:focus {
        border-color: currentColor;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    .nav-link::after,
    #darkModeToggle::before,
    .hero-badge,
    .stats-card {
        animation: none;
        transition: none;
    }
}

/* Enhanced Image Styles */
.campus-image-container {
    position: relative;
    transition: all 0.3s ease;
}

.campus-image-container:hover {
    transform: scale(1.05);
}

.campus-image-container img {
    transition: all 0.3s ease;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.dark .campus-image-container img {
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

.profile-image-container {
    position: relative;
}

.profile-image-container::after {
    content: '';
    position: absolute;
    top: -2px;
    right: -2px;
    width: 12px;
    height: 12px;
    background: #10B981;
    border: 2px solid white;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.dark .profile-image-container::after {
    border-color: #374151;
}

/* Image Loading Animation */
.campus-image-container img,
.profile-image-container img {
    opacity: 0;
    animation: fadeInImage 0.5s ease-out forwards;
}

@keyframes fadeInImage {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Profile Dropdown Effect */
.profile-image-container {
    cursor: pointer;
    position: relative;
}

.profile-image-container:hover img {
    transform: scale(1.1);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.dark .profile-image-container:hover img {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

/* Institution Branding Enhancement */
.institution-header {
    background: linear-gradient(135deg, 
        rgba(59, 130, 246, 0.05) 0%, 
        rgba(139, 92, 246, 0.05) 100%);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.dark .institution-header {
    background: linear-gradient(135deg, 
        rgba(59, 130, 246, 0.1) 0%, 
        rgba(139, 92, 246, 0.1) 100%);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

/* Mobile Profile Header Enhancement */
.mobile-profile-header {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.dark .mobile-profile-header {
    background: linear-gradient(135deg, #374151 0%, #4b5563 100%);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Image Error Handling */
img[src*="base64"] {
    background: linear-gradient(135deg, #e5e7eb 0%, #f3f4f6 100%);
    border-radius: inherit;
}

.dark img[src*="base64"] {
    background: linear-gradient(135deg, #4b5563 0%, #6b7280 100%);
}

/* Navigation Enhancement with Images */
nav {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.dark nav {
    background: rgba(31, 41, 55, 0.9);
    border: 1px solid rgba(75, 85, 99, 0.3);
}

/* Responsive Image Adjustments */
@media (max-width: 768px) {
    .campus-image-container img {
        width: 40px;
        height: 40px;
    }
    
    .profile-image-container img {
        width: 40px;
        height: 40px;
    }
}

@media (max-width: 640px) {
    .institution-header img {
        width: 48px;
        height: 48px;
    }
}

/* Print Styles for Images */
@media print {
    .campus-image-container,
    .profile-image-container {
        display: none !important;
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .campus-image-container img,
    .profile-image-container img {
        border-width: 3px;
        border-color: currentColor;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    .campus-image-container:hover,
    .profile-image-container:hover img,
    .campus-image-container img,
    .profile-image-container img {
        transform: none !important;
        animation: none !important;
        transition: none !important;
    }
}

/* Loading State for Images */
.image-loading {
    background: linear-gradient(90deg, #f0f0f0 25%, transparent 37%, #f0f0f0 63%);
    background-size: 400% 100%;
    animation: shimmer 1.5s infinite;
}

.dark .image-loading {
    background: linear-gradient(90deg, #374151 25%, transparent 37%, #374151 63%);
    background-size: 400% 100%;
}

@keyframes shimmer {
    0% { background-position: 100% 0; }
    100% { background-position: -100% 0; }
}

/* Image Accessibility */
img[alt] {
    font-family: 'Inter', sans-serif;
    font-size: 12px;
    text-align: center;
    padding: 8px;
    background: #f3f4f6;
    border: 1px dashed #d1d5db;
    color: #6b7280;
}

.dark img[alt] {
    background: #374151;
    border-color: #4b5563;
    color: #9ca3af;
}