/* ================================================
   MODERN INVOICE APPROVAL SYSTEM - DESIGN SYSTEM
   Vibrant & Colorful | Glass-morphism | Gradients
   ================================================ */

/* ============================================
   CSS VARIABLES - DESIGN TOKENS
   ============================================ */
:root {
    /* Primary Gradient Colors */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-success: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-warning: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    --gradient-danger: linear-gradient(135deg, #ff6b6b 0%, #ee5a6f 100%);
    --gradient-info: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
    --gradient-dark: linear-gradient(135deg, #1f1c2c 0%, #928dab 100%);

    /* Accent Gradients */
    --gradient-purple-pink: linear-gradient(135deg, #667eea 0%, #f093fb 100%);
    --gradient-blue-purple: linear-gradient(135deg, #4facfe 0%, #667eea 100%);
    --gradient-orange-pink: linear-gradient(135deg, #fa709a 0%, #ffd06a 100%);
    --gradient-teal-blue: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);

    /* Solid Colors */
    --color-primary: #667eea;
    --color-secondary: #764ba2;
    --color-accent: #f093fb;
    --color-success: #00f2fe;
    --color-warning: #fee140;
    --color-danger: #ff6b6b;
    --color-info: #4facfe;

    /* Neutral Colors */
    --color-white: #ffffff;
    --color-black: #1a1a2e;
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 20px rgba(102, 126, 234, 0.4);
    --shadow-glow-pink: 0 0 30px rgba(240, 147, 251, 0.5);

    /* Glass-morphism */
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-bg-light: rgba(255, 255, 255, 0.15);
    --glass-bg-strong: rgba(255, 255, 255, 0.25);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-blur: blur(10px);

    /* Typography */
    --font-primary: 'Space Grotesk', 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-base: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
}

/* ============================================
   GLOBAL RESET & BASE STYLES
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-primary);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    background-attachment: fixed;
    background-size: cover;
    color: var(--color-gray-900);
    line-height: 1.6;
    overflow-x: hidden !important;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    position: relative;
}

/* Ensure all text is readable */
h1, h2, h3, h4, h5, h6 {
    color: var(--color-gray-900);
}

a {
    color: var(--color-primary);
    text-decoration: none;
}

a:hover {
    color: var(--color-secondary);
    text-decoration: underline;
}

/* Animated Background Overlay */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 20% 50%, rgba(102, 126, 234, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(240, 147, 251, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(74, 172, 254, 0.2) 0%, transparent 50%);
    animation: backgroundPulse 15s ease-in-out infinite;
    pointer-events: none;
    z-index: 0;
}

@keyframes backgroundPulse {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.05); }
}

p {
    margin-bottom: 0 !important;
}

.card {
    border: none !important;
}

/* ============================================
   NAVBAR - MODERN GLASS DESIGN
   ============================================ */
.navbar {
    background: rgba(255, 255, 255, 0.15) !important;
    backdrop-filter: blur(15px) !important;
    -webkit-backdrop-filter: blur(15px) !important;
    border-bottom: 2px solid rgba(255, 255, 255, 0.3);
    padding: var(--space-md) var(--space-lg);
    box-shadow: var(--shadow-lg);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all var(--transition-base);
}

.navbar:hover {
    background: rgba(255, 255, 255, 0.2) !important;
    box-shadow: var(--shadow-xl);
}

.navbar-brand {
    color: var(--color-white) !important;
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: 1px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    transition: all var(--transition-base);
}

.navbar-brand img {
    width: 18%;
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.3));
    transition: transform var(--transition-base);
}

.navbar-brand:hover {
    color: var(--color-warning) !important;
    transform: translateY(-2px);
}

.navbar-brand:hover img {
    transform: scale(1.05);
}

.navbar .nav-link {
    color: var(--color-white) !important;
    font-weight: var(--font-weight-medium);
    padding: var(--space-sm) var(--space-md) !important;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.navbar .nav-link:hover {
    background: var(--glass-bg-light);
    transform: translateY(-2px);
}

.navbar .dropdown-menu {
    background: rgba(26, 26, 46, 0.95) !important;
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    padding: var(--space-sm);
}

.navbar .dropdown-item {
    color: var(--color-white) !important;
    border-radius: var(--radius-sm);
    padding: var(--space-sm) var(--space-md);
    transition: all var(--transition-fast);
}

.navbar .dropdown-item:hover {
    background: var(--gradient-primary) !important;
    transform: translateX(5px);
}

/* ============================================
   CONTAINER - GLASS CARDS
   ============================================ */
.container,
.container-fluid {
    margin-top: var(--space-xl) !important;
    margin-bottom: var(--space-2xl) !important;
    padding: var(--space-2xl);
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 2px solid rgba(102, 126, 234, 0.3);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl);
    position: relative;
    z-index: 1;
    animation: fadeInUp 0.6s ease-out;
}

.container::before,
.container-fluid::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    pointer-events: none;
    z-index: 2;
}

.container *:not(.btn):not(.badge):not(.alert),
.container-fluid *:not(.btn):not(.badge):not(.alert) {
    position: relative;
    z-index: 1;
}

.container h1, .container h2, .container h3, .container h4, .container h5, .container h6,
.container-fluid h1, .container-fluid h2, .container-fluid h3, .container-fluid h4, .container-fluid h5, .container-fluid h6 {
    color: var(--color-gray-900) !important;
    font-weight: var(--font-weight-bold);
}

.container p, .container span:not(.badge), .container div, .container label,
.container-fluid p, .container-fluid span:not(.badge), .container-fluid div, .container-fluid label {
    color: var(--color-gray-900) !important;
}

/* ============================================
   USER & ADMIN PANELS
   ============================================ */
.user,
.admin {
    margin: var(--space-lg) 0;
    background: var(--gradient-purple-pink);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    text-transform: capitalize;
    color: var(--color-white);
    box-shadow: var(--shadow-glow);
    transition: all var(--transition-base);
}

.user:hover,
.admin:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow-pink);
}

.admin {
    background: var(--gradient-warning);
}

.user-panel {
    background: var(--glass-bg-strong);
    backdrop-filter: var(--glass-blur);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-lg);
}

.admin-panel {
    background: var(--glass-bg-strong);
    backdrop-filter: var(--glass-blur);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(254, 225, 64, 0.3);
    box-shadow: var(--shadow-lg);
}

/* ============================================
   TABLE - MODERN DESIGN
   ============================================ */
.table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0 var(--space-sm);
    margin-bottom: var(--space-xl);
    background: transparent;
}

.table th,
.table td {
    padding: var(--space-md) var(--space-lg);
    text-align: left;
    text-transform: capitalize;
    vertical-align: middle;
}

.table thead th {
    background: var(--gradient-primary);
    color: var(--color-white);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.875rem;
    border: none;
    box-shadow: var(--shadow-md);
    position: relative;
}

.table thead th:first-child {
    border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.table thead th:last-child {
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.table tbody tr {
    background: rgba(255, 255, 255, 0.95);
    transition: all var(--transition-base);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.table tbody tr:hover {
    background: rgba(255, 255, 255, 1);
    transform: translateX(5px) scale(1.01);
    box-shadow: var(--shadow-lg);
}

.table tbody td {
    border: none;
    background: transparent;
    color: var(--color-gray-900) !important;
    font-weight: var(--font-weight-medium);
}

.table tbody td:first-child {
    border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.table tbody td:last-child {
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

/* DataTables Styling */
.dataTables_wrapper {
    padding: var(--space-md);
}

.dataTables_filter input,
.dataTables_length select {
    background: rgba(255, 255, 255, 0.9) !important;
    border: 2px solid var(--glass-border) !important;
    border-radius: var(--radius-full) !important;
    padding: var(--space-sm) var(--space-md) !important;
    transition: all var(--transition-base) !important;
}

.dataTables_filter input:focus,
.dataTables_length select:focus {
    border-color: var(--color-primary) !important;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2) !important;
    outline: none !important;
}

.dataTables_info,
.dataTables_paginate {
    color: var(--color-gray-900) !important;
    font-weight: var(--font-weight-semibold) !important;
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.8);
}

.dataTables_filter label,
.dataTables_length label {
    color: var(--color-gray-900) !important;
    font-weight: var(--font-weight-semibold) !important;
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.8);
}

.paginate_button {
    background: rgba(255, 255, 255, 0.9) !important;
    border: 2px solid rgba(102, 126, 234, 0.5) !important;
    border-radius: var(--radius-sm) !important;
    color: var(--color-gray-900) !important;
    margin: 0 var(--space-xs) !important;
    transition: all var(--transition-fast) !important;
    font-weight: var(--font-weight-semibold) !important;
}

.paginate_button:hover {
    background: var(--gradient-primary) !important;
    transform: translateY(-2px) !important;
    color: var(--color-white) !important;
    border-color: transparent !important;
}

.paginate_button.current {
    background: var(--gradient-primary) !important;
    border: none !important;
    color: var(--color-white) !important;
}

/* DataTables Export Buttons */
.dt-buttons {
    margin-bottom: var(--space-lg);
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.dt-button {
    background: var(--gradient-primary) !important;
    border: none !important;
    color: var(--color-white) !important;
    padding: var(--space-sm) var(--space-lg) !important;
    border-radius: var(--radius-full) !important;
    font-weight: var(--font-weight-semibold) !important;
    transition: all var(--transition-base) !important;
    box-shadow: var(--shadow-md) !important;
}

.dt-button:hover {
    background: var(--gradient-secondary) !important;
    transform: translateY(-3px) !important;
    box-shadow: var(--shadow-glow) !important;
}

/* ============================================
   BUTTONS - VIBRANT GRADIENTS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-white);
    text-align: center;
    vertical-align: middle;
    cursor: pointer;
    padding: var(--space-sm) var(--space-lg);
    font-size: 1rem;
    border-radius: var(--radius-full) !important;
    border: none;
    transition: all var(--transition-base);
    text-decoration: none;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

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

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

.btn-primary:hover {
    background: var(--gradient-blue-purple);
}

.btn-success {
    background: var(--gradient-success);
}

.btn-success:hover {
    background: var(--gradient-teal-blue);
}

.btn-danger {
    background: var(--gradient-danger);
}

.btn-danger:hover {
    filter: brightness(1.1);
}

.btn-warning {
    background: var(--gradient-warning);
    color: var(--color-gray-800) !important;
}

.btn-warning:hover {
    background: var(--gradient-orange-pink);
    color: var(--color-white) !important;
}

.btn-info {
    background: var(--gradient-info);
}

.btn-info:hover {
    filter: brightness(1.1);
}

.btn-dark {
    background: var(--gradient-dark);
}

.btn-dark:hover {
    filter: brightness(1.2);
}

.btn-sm {
    padding: var(--space-xs) var(--space-md);
    font-size: 0.875rem;
}

.btn-lg {
    padding: var(--space-md) var(--space-xl);
    font-size: 1.125rem;
}

/* ============================================
   CARDS - MODERN DASHBOARD CARDS
   ============================================ */
.card {
    background: var(--glass-bg-strong);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border) !important;
    border-radius: var(--radius-lg) !important;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.card-header {
    background: transparent;
    border: none;
    padding: var(--space-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
}

.card-body {
    padding: var(--space-lg);
    color: var(--color-gray-900);
}

.card-body h1,
.card-body h2,
.card-body h3,
.card-body h4,
.card-body h5,
.card-body h6 {
    color: var(--color-gray-900);
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.5);
}

.card-body p,
.card-body span,
.card-body div {
    color: var(--color-gray-900);
}

.card-title {
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin-bottom: var(--space-md);
}

.card-text {
    color: var(--color-gray-800);
}

/* Summary/Total Cards */
.total {
    background: var(--gradient-primary);
    color: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    box-shadow: var(--shadow-glow);
    transition: all var(--transition-base);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.total:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--shadow-glow-pink);
}

/* ============================================
   FORMS - MODERN INPUT DESIGN
   ============================================ */
form {
    margin-top: var(--space-lg);
}

.form-label {
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-sm);
    display: block;
    color: var(--color-white);
    font-size: 0.95rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.form-control,
.form-select {
    display: block;
    width: 100%;
    padding: var(--space-md);
    font-size: 1rem;
    color: var(--color-gray-900) !important;
    background: rgba(255, 255, 255, 0.98) !important;
    border: 2px solid rgba(102, 126, 234, 0.5) !important;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    font-weight: var(--font-weight-medium);
}

.form-control:focus,
.form-select:focus {
    background: rgba(255, 255, 255, 1) !important;
    border-color: var(--color-primary) !important;
    outline: none;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.3) !important;
    transform: translateY(-2px);
    color: var(--color-black) !important;
}

.form-control::placeholder {
    color: var(--color-gray-400);
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

/* File Upload Styling */
.form-control[type="file"] {
    padding: var(--space-sm);
}

.form-control[type="file"]::file-selector-button {
    background: var(--gradient-primary);
    color: var(--color-white);
    border: none;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-base);
    margin-right: var(--space-md);
}

.form-control[type="file"]::file-selector-button:hover {
    background: var(--gradient-secondary);
}

/* ============================================
   ALERTS - MODERN NOTIFICATIONS
   ============================================ */
.alert {
    padding: var(--space-lg);
    border: none;
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-lg);
    box-shadow: var(--shadow-lg);
    border-left: 4px solid;
    animation: slideInRight 0.4s ease-out;
}

.alert-success {
    background: linear-gradient(135deg, rgba(0, 242, 254, 0.2) 0%, rgba(74, 172, 254, 0.2) 100%);
    border-left-color: var(--color-success);
    color: var(--color-white);
}

.alert-danger {
    background: linear-gradient(135deg, rgba(255, 107, 107, 0.2) 0%, rgba(238, 90, 111, 0.2) 100%);
    border-left-color: var(--color-danger);
    color: var(--color-white);
}

.alert-warning {
    background: linear-gradient(135deg, rgba(250, 112, 154, 0.2) 0%, rgba(254, 225, 64, 0.2) 100%);
    border-left-color: var(--color-warning);
    color: var(--color-white);
}

.alert-info {
    background: linear-gradient(135deg, rgba(168, 237, 234, 0.2) 0%, rgba(254, 214, 227, 0.2) 100%);
    border-left-color: var(--color-info);
    color: var(--color-white);
}

/* ============================================
   ICONS
   ============================================ */
.bi {
    font-size: 35px;
    transition: all var(--transition-base);
}

i.bi-eye,
i.bi-printer,
i.bi-pencil-square,
i.bi-bar-chart,
i.bi-file-earmark-check,
i.bi-x-square,
i.bi-trash3,
i.bi-building-add,
i.bi-arrow-right,
i.bi-check-circle,
i.bi-exclamation-triangle-fill,
i.bi-file-earmark-pdf {
    font-size: 16px;
}

i.bi-clock-history {
    font-size: 20px;
}

.btn .bi {
    font-size: 18px;
}

/* ============================================
   APPROVAL SECTION
   ============================================ */
.approval {
    background: var(--glass-bg-light);
    backdrop-filter: var(--glass-blur);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--glass-border);
}

.approval li {
    list-style: inside;
    font-size: 15px;
    font-weight: var(--font-weight-medium);
    color: var(--color-white);
    padding: var(--space-xs) 0;
}

div#notificationsAccordion {
    margin-bottom: var(--space-lg);
}

/* ============================================
   FOOTER - MODERN DESIGN
   ============================================ */
footer {
    background: rgba(26, 26, 46, 0.95) !important;
    backdrop-filter: var(--glass-blur);
    color: var(--color-white);
    padding: var(--space-xl);
    text-align: center;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    margin-top: auto;
    border-top: 1px solid var(--glass-border);
    box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.2);
    position: relative;
    z-index: 1;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
}

footer a {
    color: var(--color-accent);
    text-decoration: none;
    transition: all var(--transition-base);
}

footer a:hover {
    color: var(--color-warning);
    text-decoration: underline;
}

/* ============================================
   BADGES & LABELS
   ============================================ */
.badge {
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    font-weight: var(--font-weight-semibold);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-primary {
    background: var(--gradient-primary);
}

.badge-success {
    background: var(--gradient-success);
}

.badge-danger {
    background: var(--gradient-danger);
}

.badge-warning {
    background: var(--gradient-warning);
    color: var(--color-gray-800);
}

.badge-info {
    background: var(--gradient-info);
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

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

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

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

.slide-in-right {
    animation: slideInRight 0.4s ease-out;
}

.slide-in-left {
    animation: slideInLeft 0.4s ease-out;
}

.scale-in {
    animation: scaleIn 0.4s ease-out;
}

.pulse {
    animation: pulse 2s ease-in-out infinite;
}

/* ============================================
   LOADING STATES
   ============================================ */
.loading {
    position: relative;
    pointer-events: none;
    opacity: 0.6;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 30px;
    height: 30px;
    margin: -15px 0 0 -15px;
    border: 3px solid var(--color-white);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 768px) {
    :root {
        --space-xl: 1.5rem;
        --space-2xl: 2rem;
    }

    .navbar {
        padding: var(--space-sm) var(--space-md);
    }

    .navbar-brand {
        font-size: 1.2rem;
    }

    .navbar-brand img {
        width: 80%;
    }

    .container,
    .container-fluid {
        padding: var(--space-lg);
        margin: var(--space-md) 0;
        border-radius: var(--radius-lg);
    }

    .table th,
    .table td {
        padding: var(--space-sm) var(--space-md);
        font-size: 0.9rem;
    }

    .btn {
        font-size: 0.9rem;
        padding: var(--space-sm) var(--space-md);
    }

    .bi {
        font-size: 25px;
    }

    .card {
        margin-bottom: var(--space-md);
    }

    .dt-buttons {
        flex-direction: column;
    }

    .dt-button {
        width: 100%;
    }
}

@media (max-width: 576px) {
    .table {
        font-size: 0.8rem;
    }

    .table th,
    .table td {
        padding: var(--space-xs) var(--space-sm);
    }

    .btn {
        font-size: 0.8rem;
        padding: var(--space-xs) var(--space-sm);
    }

    .btn-sm {
        padding: 0.25rem var(--space-sm);
        font-size: 0.75rem;
    }

    .form-control,
    .form-select {
        font-size: 0.9rem;
        padding: var(--space-sm);
    }

    footer {
        font-size: 0.8rem;
        padding: var(--space-md);
    }

    .navbar-brand img {
        width: 80%;
    }

    .container,
    .container-fluid {
        padding: var(--space-md);
    }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.glass-card {
    background: var(--glass-bg-strong);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
}

.shadow-glow {
    box-shadow: var(--shadow-glow);
}

.shadow-glow-pink {
    box-shadow: var(--shadow-glow-pink);
}

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

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gradient-secondary);
}

/* Selection Color */
::selection {
    background: var(--color-accent);
    color: var(--color-white);
}

::-moz-selection {
    background: var(--color-accent);
    color: var(--color-white);
}