/**
 * MeetLink Pro - Professional CSS Stylesheet
 * Version: 1.0.0
 * 
 * Modern, responsive design with glass-morphism effects,
 * gradient buttons, animations, and professional aesthetics.
 * 
 * Color Theme:
 * - Indigo: #4f46e5
 * - Pink: #ec4899
 * - Teal: #14b8a6
 */

/* ============================================
   CSS VARIABLES & CUSTOM PROPERTIES
   ============================================ */

:root {
    /* Primary Colors */
    --color-indigo: #4f46e5;
    --color-indigo-dark: #4338ca;
    --color-indigo-light: #818cf8;
    
    --color-pink: #ec4899;
    --color-pink-dark: #db2777;
    --color-pink-light: #f9a8d4;
    
    --color-teal: #14b8a6;
    --color-teal-dark: #0f766e;
    --color-teal-light: #5eead4;
    
    /* Neutral Colors */
    --color-white: #ffffff;
    --color-black: #000000;
    --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;
    
    /* Semantic Colors */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-info: #3b82f6;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--color-indigo) 0%, var(--color-pink) 100%);
    --gradient-secondary: linear-gradient(135deg, var(--color-teal) 0%, var(--color-indigo) 100%);
    --gradient-animated: linear-gradient(135deg, var(--color-indigo), var(--color-pink), var(--color-teal));
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-normal: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 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);
    
    /* Transitions */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-normal: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-normal: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    
    /* Z-Index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-gray-800);
    background-color: var(--color-gray-50);
    min-height: 100vh;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--color-indigo);
    text-decoration: none;
    transition: color var(--transition-normal);
}

a:hover {
    color: var(--color-indigo-dark);
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-normal);
    color: var(--color-gray-900);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
    margin-bottom: var(--spacing-normal);
}

strong {
    font-weight: 600;
}

code {
    font-family: var(--font-mono);
    font-size: 0.875em;
    background-color: var(--color-gray-100);
    padding: 0.125rem 0.25rem;
    border-radius: var(--radius-sm);
}

/* ============================================
   CONTAINER & LAYOUT
   ============================================ */

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-normal);
}

.container-fluid {
    width: 100%;
    padding: 0 var(--spacing-normal);
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 calc(var(--spacing-normal) * -0.5);
}

.col {
    flex: 1;
    padding: 0 calc(var(--spacing-normal) * 0.5);
}

/* Grid System */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 768px) {
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   ANIMATED GRADIENT BACKGROUND
   ============================================ */

.gradient-background {
    position: relative;
    min-height: 100vh;
    background: var(--gradient-animated);
    background-size: 300% 300%;
    animation: gradientAnimation 15s ease infinite;
    overflow: hidden;
}

.gradient-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(255,255,255,0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(255,255,255,0.1) 0%, transparent 50%);
    animation: floatAnimation 20s ease-in-out infinite;
}

@keyframes gradientAnimation {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes floatAnimation {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(20px, 20px); }
}

/* ============================================
   GLASS-MORPHISM EFFECTS
   ============================================ */

.glass-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius-2xl);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: var(--shadow-2xl);
    padding: var(--spacing-2xl);
    animation: fadeInUp 0.6s ease-out;
}

.glass-card-dark {
    background: rgba(31, 41, 55, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius-2xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-2xl);
    padding: var(--spacing-2xl);
    color: var(--color-white);
}

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

/* ============================================
   CARDS
   ============================================ */

.card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-normal);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
}

.card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

.card-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-200);
    font-weight: 600;
    font-size: var(--font-size-lg);
}

.card-body {
    padding: var(--spacing-lg);
}

.card-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-200);
    background-color: var(--color-gray-50);
    border-bottom-left-radius: var(--radius-xl);
    border-bottom-right-radius: var(--radius-xl);
}

/* Stats Cards */
.stat-card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-normal);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--gradient-primary);
}

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

.stat-card .stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-normal);
    background: var(--gradient-primary);
}

.stat-card .stat-value {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xs);
}

.stat-card .stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    font-size: var(--font-size-base);
    font-weight: 600;
    line-height: 1;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Gradient Buttons */
.btn-gradient {
    background: var(--gradient-primary);
    color: var(--color-white);
    box-shadow: var(--shadow-normal);
}

.btn-gradient:hover:not(:disabled) {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.btn-gradient:active:not(:disabled) {
    transform: translateY(0);
}

.btn-gradient-secondary {
    background: var(--gradient-secondary);
    color: var(--color-white);
    box-shadow: var(--shadow-normal);
}

.btn-gradient-secondary:hover:not(:disabled) {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

/* Solid Buttons */
.btn-primary {
    background-color: var(--color-indigo);
    color: var(--color-white);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-indigo-dark);
}

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

.btn-success:hover:not(:disabled) {
    background-color: #059669;
}

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

.btn-danger:hover:not(:disabled) {
    background-color: #dc2626;
}

.btn-warning {
    background-color: var(--color-warning);
    color: var(--color-white);
}

.btn-warning:hover:not(:disabled) {
    background-color: #d97706;
}

/* Outline Buttons */
.btn-outline {
    background-color: transparent;
    border: 2px solid var(--color-indigo);
    color: var(--color-indigo);
}

.btn-outline:hover:not(:disabled) {
    background-color: var(--color-indigo);
    color: var(--color-white);
}

/* Icon Buttons */
.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: var(--radius-full);
}

.btn-icon-sm {
    width: 32px;
    height: 32px;
    padding: 0;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
}

/* Button Sizes */
.btn-sm {
    padding: 0.5rem 1rem;
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: var(--font-size-lg);
}

.btn-block {
    display: flex;
    width: 100%;
}

/* ============================================
   FORMS
   ============================================ */

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--color-gray-700);
    font-size: var(--font-size-sm);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--color-gray-700);
    background-color: var(--color-white);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
    font-family: var(--font-family);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-indigo);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-control:disabled {
    background-color: var(--color-gray-100);
    cursor: not-allowed;
}

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

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

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3E%3Cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3E%3C/svg%3E");
    background-position: right 0.5rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: 2.5rem;
}

.form-check {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.form-check-input {
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.form-check-input:checked {
    background-color: var(--color-indigo);
    border-color: var(--color-indigo);
}

.form-check-label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
    cursor: pointer;
}

.form-error {
    color: var(--color-danger);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
}

.form-help {
    color: var(--color-gray-500);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
}

/* Password Strength Indicator */
.password-strength {
    height: 4px;
    background-color: var(--color-gray-200);
    border-radius: var(--radius-full);
    margin-top: var(--spacing-sm);
    overflow: hidden;
}

.password-strength-bar {
    height: 100%;
    border-radius: var(--radius-full);
    transition: all var(--transition-normal);
    width: 0;
}

.password-strength-bar.weak {
    width: 33%;
    background-color: var(--color-danger);
}

.password-strength-bar.medium {
    width: 66%;
    background-color: var(--color-warning);
}

.password-strength-bar.strong {
    width: 100%;
    background-color: var(--color-success);
}

/* ============================================
   TABLES
   ============================================ */

.table-container {
    overflow-x: auto;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-normal);
    background: var(--color-white);
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.table thead {
    background-color: var(--color-gray-50);
}

.table th {
    padding: var(--spacing-normal) var(--spacing-lg);
    text-align: left;
    font-weight: 600;
    color: var(--color-gray-700);
    text-transform: uppercase;
    font-size: var(--font-size-xs);
    letter-spacing: 0.05em;
    border-bottom: 2px solid var(--color-gray-200);
}

.table td {
    padding: var(--spacing-normal) var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-100);
}

.table tbody tr {
    transition: background-color var(--transition-fast);
}

.table tbody tr:nth-child(even) {
    background-color: var(--color-gray-50);
}

.table tbody tr:hover {
    background-color: var(--color-indigo-light) !important;
    background-color: rgba(79, 70, 229, 0.05) !important;
}

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

/* ============================================
   HEADER & NAVIGATION
   ============================================ */

.site-header {
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-normal);
    padding-bottom: var(--spacing-normal);
}

.site-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-gray-900);
}

.site-logo img {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
}

.site-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.site-nav a {
    color: var(--color-gray-600);
    font-weight: 500;
    transition: color var(--transition-normal);
}

.site-nav a:hover {
    color: var(--color-indigo);
}

.site-nav a.active {
    color: var(--color-indigo);
}

/* ============================================
   FOOTER
   ============================================ */

.site-footer {
    background: var(--color-gray-900);
    color: var(--color-gray-300);
    padding: var(--spacing-2xl) 0;
    margin-top: var(--spacing-2xl);
}

.site-footer a {
    color: var(--color-gray-300);
}

.site-footer a:hover {
    color: var(--color-white);
}

.footer-brand {
    margin-bottom: var(--spacing-lg);
}

.footer-brand .site-logo {
    color: var(--color-white);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-links h4 {
    color: var(--color-white);
    margin-bottom: var(--spacing-normal);
    font-size: var(--font-size-base);
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-bottom {
    border-top: 1px solid var(--color-gray-800);
    padding-top: var(--spacing-lg);
    text-align: center;
    font-size: var(--font-size-sm);
}

/* ============================================
   AUTH PAGES (LOGIN/REGISTER)
   ============================================ */

.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
}

.auth-container {
    width: 100%;
    max-width: 450px;
}

.auth-logo {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.auth-logo img {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-normal);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

.auth-logo h1 {
    font-size: var(--font-size-3xl);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
}

.auth-logo p {
    color: var(--color-white);
    font-size: var(--font-size-base);
    opacity: 0.9;
}

.auth-form {
    margin-top: var(--spacing-xl);
}

.auth-divider {
    text-align: center;
    margin: var(--spacing-lg) 0;
    position: relative;
}

.auth-divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--color-gray-300);
}

.auth-divider span {
    background: var(--color-white);
    padding: 0 var(--spacing-normal);
    position: relative;
    color: var(--color-gray-500);
    font-size: var(--font-size-sm);
}

.auth-footer {
    text-align: center;
    margin-top: var(--spacing-lg);
    color: var(--color-gray-600);
    font-size: var(--font-size-sm);
}

/* ============================================
   REDIRECT PAGE
   ============================================ */

.redirect-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    background: var(--gradient-animated);
    background-size: 300% 300%;
    animation: gradientAnimation 15s ease infinite;
}

.redirect-container {
    width: 100%;
    max-width: 600px;
    text-align: center;
}

.redirect-logo {
    margin-bottom: var(--spacing-xl);
}

.redirect-logo img {
    width: 80px;
    height: 80px;
    margin: 0 auto;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl);
}

.redirect-info {
    margin-bottom: var(--spacing-xl);
}

.platform-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-normal);
}

.countdown {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--color-indigo);
    margin: var(--spacing-lg) 0;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--color-indigo);
    border-radius: var(--radius-full);
    animation: spin 1s linear infinite;
    margin: var(--spacing-xl) auto;
}

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

.redirect-qr {
    margin: var(--spacing-xl) 0;
}

.redirect-qr img {
    margin: 0 auto;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    padding: var(--spacing-2xl) 0;
    text-align: center;
}

.hero h1 {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-normal);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: var(--font-size-lg);
    color: var(--color-gray-600);
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
}

.hero-form {
    max-width: 700px;
    margin: 0 auto;
}

.hero-form .form-group {
    display: flex;
    gap: var(--spacing-normal);
}

.hero-form .form-control {
    flex: 1;
}

/* ============================================
   PLATFORM BADGES
   ============================================ */

.platform-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    background-color: var(--color-gray-100);
    color: var(--color-gray-700);
}

.platform-badge.zoom { background-color: #E3F2FD; color: #2D8CFF; }
.platform-badge.google_meet { background-color: #E0F2F1; color: #00897B; }
.platform-badge.teams { background-color: #EDE7F6; color: #6264A7; }
.platform-badge.webex { background-color: #E1F5FE; color: #00BCF2; }
.platform-badge.skype { background-color: #E1F5FE; color: #00AFF0; }
.platform-badge.gotomeeting { background-color: #FFF3E0; color: #F68D2E; }

/* ============================================
   QR CODE DISPLAY
   ============================================ */

.qr-display {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-normal);
}

.qr-display img {
    margin: 0 auto var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.qr-thumbnail {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: var(--radius-normal);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.qr-thumbnail:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
}

/* ============================================
   ALERTS & NOTIFICATIONS
   ============================================ */

.alert {
    padding: var(--spacing-normal) var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-normal);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-normal);
}

.alert-success {
    background-color: #d1fae5;
    color: #065f46;
    border-left: 4px solid var(--color-success);
}

.alert-danger {
    background-color: #fee2e2;
    color: #991b1b;
    border-left: 4px solid var(--color-danger);
}

.alert-warning {
    background-color: #fef3c7;
    color: #92400e;
    border-left: 4px solid var(--color-warning);
}

.alert-info {
    background-color: #dbeafe;
    color: #1e40af;
    border-left: 4px solid var(--color-info);
}

/* ============================================
   BADGES
   ============================================ */

.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-primary { background-color: var(--color-indigo); color: var(--color-white); }
.badge-success { background-color: var(--color-success); color: var(--color-white); }
.badge-danger { background-color: var(--color-danger); color: var(--color-white); }
.badge-warning { background-color: var(--color-warning); color: var(--color-white); }
.badge-info { background-color: var(--color-info); color: var(--color-white); }

/* ============================================
   MODALS
   ============================================ */

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-modal);
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: var(--z-modal-backdrop);
}

.modal-content {
    position: relative;
    z-index: var(--z-modal);
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: var(--font-size-2xl);
    cursor: pointer;
    color: var(--color-gray-500);
    line-height: 1;
}

.modal-close:hover {
    color: var(--color-gray-900);
}

.modal-body {
    padding: var(--spacing-lg);
}

.modal-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-200);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-normal);
}

/* ============================================
   PAGINATION
   ============================================ */

.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xl);
}

.pagination a,
.pagination span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 var(--spacing-normal);
    border-radius: var(--radius-lg);
    font-weight: 500;
    transition: all var(--transition-normal);
}

.pagination a {
    background: var(--color-white);
    color: var(--color-gray-700);
    box-shadow: var(--shadow-sm);
}

.pagination a:hover {
    background: var(--color-indigo);
    color: var(--color-white);
    box-shadow: var(--shadow-normal);
}

.pagination span.active {
    background: var(--color-indigo);
    color: var(--color-white);
    box-shadow: var(--shadow-normal);
}

.pagination span.disabled {
    background: var(--color-gray-100);
    color: var(--color-gray-400);
    cursor: not-allowed;
}

/* ============================================
   ADMIN SIDEBAR
   ============================================ */

.admin-layout {
    display: flex;
    min-height: 100vh;
}

.admin-sidebar {
    width: 260px;
    background: var(--color-gray-900);
    color: var(--color-white);
    padding: var(--spacing-xl) 0;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.admin-sidebar .sidebar-brand {
    padding: 0 var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.admin-sidebar .sidebar-brand .site-logo {
    color: var(--color-white);
}

.admin-sidebar nav {
    padding: 0 var(--spacing-normal);
}

.admin-sidebar nav a {
    display: flex;
    align-items: center;
    gap: var(--spacing-normal);
    padding: var(--spacing-normal) var(--spacing-lg);
    color: var(--color-gray-300);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-xs);
    transition: all var(--transition-normal);
}

.admin-sidebar nav a:hover,
.admin-sidebar nav a.active {
    background: var(--color-gray-800);
    color: var(--color-white);
}

.admin-content {
    flex: 1;
    margin-left: 260px;
    padding: var(--spacing-xl);
}

/* ============================================
   BLOG STYLES
   ============================================ */

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.blog-card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-normal);
    transition: all var(--transition-normal);
}

.blog-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

.blog-card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.blog-card-body {
    padding: var(--spacing-lg);
}

.blog-card-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-normal);
    margin-bottom: var(--spacing-normal);
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.blog-card-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
}

.blog-card-title a {
    color: var(--color-gray-900);
}

.blog-card-title a:hover {
    color: var(--color-indigo);
}

.blog-card-excerpt {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-normal);
}

.category-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

/* ============================================
   EMPTY STATES
   ============================================ */

.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.5;
}

.empty-state h3 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-normal);
    color: var(--color-gray-600);
}

.empty-state p {
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-xl);
}

/* ============================================
   UTILITIES
   ============================================ */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-muted { color: var(--color-gray-500); }
.text-success { color: var(--color-success); }
.text-danger { color: var(--color-danger); }
.text-warning { color: var(--color-warning); }
.text-info { color: var(--color-info); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-normal); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-normal); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

.flex-wrap { flex-wrap: wrap; }
.align-items-center { align-items: center; }
.justify-content-center { justify-content: center; }
.justify-content-between { justify-content: space-between; }
.gap-1 { gap: var(--spacing-sm); }
.gap-2 { gap: var(--spacing-normal); }
.gap-3 { gap: var(--spacing-lg); }

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 1024px) {
    .admin-sidebar {
        width: 220px;
    }
    
    .admin-content {
        margin-left: 220px;
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.5rem;
        --font-size-2xl: 1.25rem;
    }
    
    .admin-sidebar {
        width: 100%;
        position: static;
        height: auto;
    }
    
    .admin-content {
        margin-left: 0;
    }
    
    .admin-layout {
        flex-direction: column;
    }
    
    .hero-form .form-group {
        flex-direction: column;
    }
    
    .site-nav {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .table {
        font-size: var(--font-size-xs);
    }
    
    .table th,
    .table td {
        padding: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .glass-card {
        padding: var(--spacing-lg);
    }
    
    .btn {
        padding: 0.625rem 1.25rem;
    }
    
    .stat-card {
        padding: var(--spacing-lg);
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
    .site-header,
    .site-footer,
    .admin-sidebar,
    .btn,
    .form-control {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}