/* Light/Dark Mode Variables */
:root {
    /* Light theme: UMT Official Colors - Blue and White */
    --bg-color: #ffffff;
    --text-color: #1e3a8a;
    --card-bg: #f8fafc;
    --border-color: rgba(59, 130, 246, 0.15);
    --shadow-color: rgba(59, 130, 246, 0.1);
    --gradient-start: #3b82f6;
    --gradient-end: #1d4ed8;
    --hover-bg: rgba(59, 130, 246, 0.05);
    --scrollbar-track: #f1f5f9;
    --nav-bg: #ffffff;
    --nav-text: #1e3a8a;
    --nav-border: rgba(59, 130, 246, 0.1);
    --sidebar-bg: #ffffff;
    --active-bg: rgba(59, 130, 246, 0.1);
    --active-text: #1d4ed8;
}

.dark-mode {
    /* Dark theme: UMT Blue-inspired Navy */
    --bg-color: #1e293b;
    --text-color: #f1f5f9;
    --card-bg: #334155;
    --border-color: rgba(148, 163, 184, 0.2);
    --shadow-color: rgba(0, 0, 0, 0.25);
    --gradient-start: #60a5fa;
    --gradient-end: #3b82f6;
    --hover-bg: rgba(96, 165, 250, 0.1);
    --scrollbar-track: #1e293b;
    --nav-bg: #334155;
    --nav-text: #f1f5f9;
    --nav-border: rgba(148, 163, 184, 0.2);
    --sidebar-bg: #1e293b;
    --active-bg: rgba(96, 165, 250, 0.2);
    --active-text: #60a5fa;
}

/* --- Dark Mode Visibility Fixes --- */

/* Fix body background color */
.dark-mode.bg-gray-50, .dark-mode .bg-gray-50 {
    background-color: var(--bg-color) !important;
}

.dark-mode .bg-white {
    background-color: var(--card-bg) !important;
}

/* Fix text visibility */
.dark-mode .text-gray-900,
.dark-mode .text-gray-800,
.dark-mode .text-gray-700,
.dark-mode .text-gray-600,
.dark-mode .text-gray-500 {
    color: var(--text-color) !important;
}

.dark-mode .text-gray-600, .dark-mode .text-gray-500 {
    opacity: 0.8;
}

/* Fix sidebar section headers */
.dark-mode p[style*="opacity: 0.6"] {
    opacity: 0.7 !important;
    color: #bdc3c7 !important;
}

/* Fix colored text */
.dark-mode .text-blue-600 { color: #5dade2 !important; }
.dark-mode .text-green-600 { color: #58d68d !important; }
.dark-mode .text-red-600 { color: #ec7063 !important; }

/* Fix background colors for elements */
.dark-mode .bg-gray-200 {
    background-color: #34495e !important;
}

.dark-mode .bg-blue-50, .dark-mode .bg-purple-50, .dark-mode .bg-green-50, .dark-mode .bg-yellow-50, .dark-mode .bg-red-50 {
    background-color: rgba(52, 73, 94, 0.5) !important;
}

.dark-mode .bg-blue-100, .dark-mode .bg-purple-100, .dark-mode .bg-green-100, .dark-mode .bg-yellow-100, .dark-mode .bg-red-100 {
    background-color: rgba(127, 140, 141, 0.2) !important;
}

/* Fix colored text on colored backgrounds */
.dark-mode .text-blue-800 { color: #a9cce3 !important; }
.dark-mode .text-purple-800 { color: #d7bde2 !important; }
.dark-mode .text-green-800 { color: #a3e4d7 !important; }
.dark-mode .text-red-800 { color: #f5b7b1 !important; }
.dark-mode .text-yellow-800 { color: #fAD7A0 !important; }

/* Fix border colors */
.dark-mode .border-gray-200, .dark-mode .border-gray-300 {
    border-color: var(--border-color) !important;
}

.dark-mode .divide-gray-200 > * + * {
    border-color: var(--border-color) !important;
}

/* Fix input fields */
.dark-mode input, .dark-mode select, .dark-mode textarea {
    background-color: #2c3e50 !important;
    color: var(--text-color) !important;
    border-color: var(--border-color) !important;
}

/* Badge fixes */
.dark-mode .badge-primary { background-color: rgba(93, 173, 226, 0.2); color: #85c1e9; }
.dark-mode .badge-success { background-color: rgba(88, 214, 141, 0.2); color: #7dcea0; }
.dark-mode .badge-warning { background-color: rgba(245, 176, 65, 0.2); color: #f8c471; }
.dark-mode .badge-danger { background-color: rgba(236, 112, 99, 0.2); color: #f1948a; }

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.gradient-bg {
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    box-shadow: 0 4px 6px -1px var(--shadow-color), 0 2px 4px -1px var(--shadow-color);
}

.card-hover {
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
    background-color: var(--card-bg);
}

.card-hover:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 25px -5px var(--shadow-color), 0 10px 10px -5px var(--shadow-color);
    border-color: rgba(var(--gradient-start), 0.2);
}

.card-hover::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom, var(--gradient-start), var(--gradient-end));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.card-hover:hover::before {
    opacity: 1;
}

.progress-ring {
    transform: rotate(-90deg);
}

.progress-ring-circle {
    transition: stroke-dasharray 0.35s;
    transform-origin: 50% 50%;
}

.sidebar-transition {
    transition: transform 0.3s ease-in-out;
}

@media (max-width: 768px) {
    .sidebar-hidden {
        transform: translateX(-100%);
    }
}

.nav-item {
    transition: all 0.2s ease;
    border-radius: 8px;
    position: relative;
    overflow: hidden;
    color: var(--text-color);
}

.nav-item:hover {
    transform: translateX(4px);
    background-color: var(--hover-bg);
}

.nav-item.active {
    background-color: var(--active-bg);
    color: var(--active-text);
    border-right: 3px solid var(--gradient-start);
}

.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-in {
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateX(-20px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--scrollbar-track);
    border-radius: 8px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(to bottom, var(--gradient-start), var(--gradient-end));
    border-radius: 8px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(to bottom, var(--gradient-start), var(--gradient-end));
    opacity: 0.8;
}

/* Loading animation */
.loading {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid rgba(var(--gradient-start), 0.2);
    border-radius: 50%;
    border-top-color: var(--gradient-start);
    animation: spin 1s ease-in-out infinite;
    box-shadow: 0 0 10px rgba(var(--gradient-start), 0.1);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Responsive grid adjustments */
@media (max-width: 640px) {
    .grid-responsive {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 641px) and (max-width: 1024px) {
    .grid-responsive {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1025px) {
    .grid-responsive {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Enhanced UI Elements */
.btn-primary {
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    color: white;
    font-weight: 500;
    padding: 0.5rem 1.5rem;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
    border: none;
    box-shadow: 0 4px 6px -1px var(--shadow-color), 0 2px 4px -1px var(--shadow-color);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.btn-primary:active {
    transform: translateY(0);
}

.card {
    background-color: var(--card-bg);
    border-radius: 1rem;
    box-shadow: 0 4px 6px -1px var(--shadow-color), 0 2px 4px -1px var(--shadow-color);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.card-header {
    padding: 1.25rem;
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    background-color: var(--card-bg);
}

.card-body {
    padding: 1.25rem;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
    text-align: center;
}

.badge-primary {
    background-color: rgba(79, 70, 229, 0.1);
    color: #4f46e5;
}

.badge-success {
    background-color: rgba(16, 185, 129, 0.1);
    color: #10b981;
}

.badge-warning {
    background-color: rgba(245, 158, 11, 0.1);
    color: #f59e0b;
}

.badge-danger {
    background-color: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

/* Dark mode badge fixes */
.dark-mode .badge-primary {
    background-color: rgba(79, 70, 229, 0.2);
    color: #a78bfa;
}

.dark-mode .badge-success {
    background-color: rgba(16, 185, 129, 0.2);
    color: #68d391;
}

.dark-mode .badge-warning {
    background-color: rgba(245, 158, 11, 0.2);
    color: #fbb450;
}

.dark-mode .badge-danger {
    background-color: rgba(239, 68, 68, 0.2);
    color: #f87171;
}

/* Additional theme support for all text elements */
.dark-mode h1, .dark-mode h2, .dark-mode h3, .dark-mode h4, .dark-mode h5, .dark-mode h6 {
    color: var(--text-color) !important;
}

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

.dark-mode .text-gray-900 {
    color: var(--text-color) !important;
}

.dark-mode .text-gray-600 {
    color: var(--text-color) !important;
    opacity: 0.8;
}

.dark-mode .text-gray-500 {
    color: var(--text-color) !important;
    opacity: 0.7;
}

.dark-mode .text-gray-700 {
    color: var(--text-color) !important;
}

.dark-mode .bg-gray-50 {
    background-color: var(--card-bg) !important;
}

.dark-mode .bg-white {
    background-color: var(--card-bg) !important;
}

.dark-mode .border-gray-200 {
    border-color: var(--border-color) !important;
}

.dark-mode .border-gray-300 {
    border-color: var(--border-color) !important;
}

.dark-mode .divide-gray-200 > * + * {
    border-color: var(--border-color) !important;
}

/* Ensure input fields work properly in dark mode */
.dark-mode input {
    background-color: var(--card-bg) !important;
    color: var(--text-color) !important;
    border-color: var(--border-color) !important;
}

.dark-mode select {
    background-color: var(--card-bg) !important;
    color: var(--text-color) !important;
    border-color: var(--border-color) !important;
}

.dark-mode textarea {
    background-color: var(--card-bg) !important;
    color: var(--text-color) !important;
    border-color: var(--border-color) !important;
}