/* ========================================
   NotenWeb 2025/2026 - Glass Design Styles
   ======================================== */

/* Root Variables */
:root {
    /* Hauptfarben aus dem Bild */
    --primary-gradient: linear-gradient(135deg, #1e3c72 0%, #2a5298 50%, #7e8ba3 100%);
    --dark-bg: #1a1a2e;
    --dark-secondary: #16213e;
    --accent-blue: #0f7dc2;
    --accent-light-blue: #52b7e9;
    --glass-white: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --text-white: #ffffff;
    --text-light: rgba(255, 255, 255, 0.9);
    --text-muted: rgba(255, 255, 255, 0.6);
    
    /* Sekundärfarben */
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    
    /* Schatten */
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
    --glow: 0 0 30px rgba(82, 183, 233, 0.3);
}

/* ========================================
   Base Styles
   ======================================== */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--primary-gradient);
    min-height: 100vh;
    color: var(--text-white);
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(82, 183, 233, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(15, 125, 194, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(42, 82, 152, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: 1;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
    position: relative;
    z-index: 2;
}

/* ========================================
   Glass Components
   ======================================== */

.glass-panel {
    background: var(--glass-white);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 30px;
    box-shadow: var(--shadow-md);
}

.glass-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 25px;
    transition: all 0.3s ease;
}

.glass-card:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-5px);
    box-shadow: var(--glow);
}

/* ========================================
   Header Styles
   ======================================== */

.header {
    background: var(--glass-white);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 20px 30px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-light-blue) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 26px;
    font-weight: bold;
    box-shadow: 0 5px 15px rgba(82, 183, 233, 0.3);
}

.header h1 {
    color: var(--text-white);
    font-size: 28px;
    font-weight: 600;
}

.subtitle {
    color: var(--text-muted);
    font-size: 14px;
    margin-top: 2px;
}

/* ========================================
   Modern Glass Button Styles
   ======================================== */

.btn-glass {
    position: relative;
    padding: 14px 32px;
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.1) 0%, 
        rgba(255, 255, 255, 0.05) 100%);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 16px;
    color: var(--text-white);
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.15),
        inset 0 -1px 0 rgba(0, 0, 0, 0.1);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
    z-index: 1;
}

/* Glassmorphism shine effect */
.btn-glass::before {
    content: '';
    position: absolute;
    top: 0;
    left: -150%;
    width: 150%;
    height: 100%;
    background: linear-gradient(
        105deg, 
        transparent 40%, 
        rgba(255, 255, 255, 0.7) 50%, 
        transparent 60%
    );
    transition: left 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: -1;
}

/* Glow effect layer */
.btn-glass::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: radial-gradient(circle, 
        rgba(255, 255, 255, 0.3) 0%, 
        transparent 70%);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
    border-radius: 50%;
    z-index: -1;
}

.btn-glass:hover::before {
    left: 150%;
}

.btn-glass:hover::after {
    width: 120%;
    height: 120%;
}

.btn-glass:hover {
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.15) 0%, 
        rgba(255, 255, 255, 0.08) 100%);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-3px) scale(1.02);
    box-shadow: 
        0 12px 40px rgba(82, 183, 233, 0.4),
        0 0 80px rgba(82, 183, 233, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.3),
        inset 0 -1px 0 rgba(0, 0, 0, 0.2);
}

.btn-glass:active {
    transform: translateY(-1px) scale(1);
    box-shadow: 
        0 4px 20px rgba(82, 183, 233, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1),
        inset 0 -1px 0 rgba(0, 0, 0, 0.1);
}

/* Primary Button - Gradient Effect */
.btn-glass.btn-primary {
    background: linear-gradient(135deg, 
        rgba(82, 183, 233, 0.25) 0%, 
        rgba(15, 125, 194, 0.15) 100%);
    border: 1px solid rgba(82, 183, 233, 0.3);
    box-shadow: 
        0 8px 32px rgba(82, 183, 233, 0.25),
        0 0 40px rgba(82, 183, 233, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.2),
        inset 0 -1px 0 rgba(0, 0, 0, 0.1);
}

.btn-glass.btn-primary:hover {
    background: linear-gradient(135deg, 
        rgba(82, 183, 233, 0.35) 0%, 
        rgba(15, 125, 194, 0.25) 100%);
    border-color: rgba(82, 183, 233, 0.5);
    box-shadow: 
        0 12px 48px rgba(82, 183, 233, 0.4),
        0 0 100px rgba(82, 183, 233, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

/* Success Button - Neon Green */
.btn-glass.btn-success {
    background: linear-gradient(135deg,
        rgba(16, 185, 129, 0.25) 0%,
        rgba(5, 150, 105, 0.15) 100%);
    border: 1px solid rgba(16, 185, 129, 0.3);
    box-shadow: 
        0 8px 32px rgba(16, 185, 129, 0.25),
        0 0 40px rgba(16, 185, 129, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn-glass.btn-success:hover {
    background: linear-gradient(135deg,
        rgba(16, 185, 129, 0.35) 0%,
        rgba(5, 150, 105, 0.25) 100%);
    border-color: rgba(16, 185, 129, 0.5);
    box-shadow: 
        0 12px 48px rgba(16, 185, 129, 0.4),
        0 0 100px rgba(16, 185, 129, 0.3);
}

/* Danger Button - Red Alert */
.btn-glass.btn-danger {
    background: linear-gradient(135deg,
        rgba(239, 68, 68, 0.25) 0%,
        rgba(220, 38, 38, 0.15) 100%);
    border: 1px solid rgba(239, 68, 68, 0.3);
    box-shadow: 
        0 8px 32px rgba(239, 68, 68, 0.25),
        0 0 40px rgba(239, 68, 68, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn-glass.btn-danger:hover {
    background: linear-gradient(135deg,
        rgba(239, 68, 68, 0.35) 0%,
        rgba(220, 38, 38, 0.25) 100%);
    border-color: rgba(239, 68, 68, 0.5);
    box-shadow: 
        0 12px 48px rgba(239, 68, 68, 0.4),
        0 0 100px rgba(239, 68, 68, 0.3);
}

/* Warning Button - Amber */
.btn-glass.btn-warning {
    background: linear-gradient(135deg,
        rgba(245, 158, 11, 0.25) 0%,
        rgba(217, 119, 6, 0.15) 100%);
    border: 1px solid rgba(245, 158, 11, 0.3);
    box-shadow: 
        0 8px 32px rgba(245, 158, 11, 0.25),
        0 0 40px rgba(245, 158, 11, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn-glass.btn-warning:hover {
    background: linear-gradient(135deg,
        rgba(245, 158, 11, 0.35) 0%,
        rgba(217, 119, 6, 0.25) 100%);
    border-color: rgba(245, 158, 11, 0.5);
    box-shadow: 
        0 12px 48px rgba(245, 158, 11, 0.4),
        0 0 100px rgba(245, 158, 11, 0.3);
}

/* Info Button - Cyan */
.btn-glass.btn-info {
    background: linear-gradient(135deg,
        rgba(6, 182, 212, 0.25) 0%,
        rgba(8, 145, 178, 0.15) 100%);
    border: 1px solid rgba(6, 182, 212, 0.3);
    box-shadow: 
        0 8px 32px rgba(6, 182, 212, 0.25),
        0 0 40px rgba(6, 182, 212, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn-glass.btn-info:hover {
    background: linear-gradient(135deg,
        rgba(6, 182, 212, 0.35) 0%,
        rgba(8, 145, 178, 0.25) 100%);
    border-color: rgba(6, 182, 212, 0.5);
    box-shadow: 
        0 12px 48px rgba(6, 182, 212, 0.4),
        0 0 100px rgba(6, 182, 212, 0.3);
}

/* Size Variants */
.btn-glass.btn-sm {
    padding: 10px 24px;
    font-size: 12px;
    border-radius: 12px;
    letter-spacing: 1px;
}

.btn-glass.btn-lg {
    padding: 18px 48px;
    font-size: 16px;
    border-radius: 20px;
    letter-spacing: 1.5px;
}

.btn-glass.btn-xl {
    padding: 22px 56px;
    font-size: 18px;
    border-radius: 24px;
    letter-spacing: 2px;
}

/* Width Variants */
.btn-glass.btn-full {
    width: 100%;
    justify-content: center;
}

/* Icon Buttons */
.btn-glass.btn-icon {
    width: 48px;
    height: 48px;
    padding: 0;
    border-radius: 50%;
    font-size: 20px;
}

.btn-glass.btn-icon:hover {
    transform: translateY(-3px) scale(1.1) rotate(5deg);
}

/* Outlined Variant */
.btn-glass.btn-outline {
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-glass.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

/* Gradient Text Button */
.btn-glass.btn-gradient-text {
    background: transparent;
    border: 2px solid transparent;
    background-clip: padding-box;
    border-image: linear-gradient(135deg, #52b7e9, #0f7dc2) 1;
}

.btn-glass.btn-gradient-text span {
    background: linear-gradient(135deg, #52b7e9, #0f7dc2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Pulse Animation for CTAs */
@keyframes pulse-glow {
    0% {
        box-shadow: 
            0 8px 32px rgba(82, 183, 233, 0.25),
            0 0 40px rgba(82, 183, 233, 0.1);
    }
    50% {
        box-shadow: 
            0 8px 32px rgba(82, 183, 233, 0.4),
            0 0 80px rgba(82, 183, 233, 0.3);
    }
    100% {
        box-shadow: 
            0 8px 32px rgba(82, 183, 233, 0.25),
            0 0 40px rgba(82, 183, 233, 0.1);
    }
}

.btn-glass.btn-pulse {
    animation: pulse-glow 2s infinite;
}

/* Disabled State */
.btn-glass:disabled,
.btn-glass.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

.btn-glass:disabled:hover,
.btn-glass.disabled:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
}

/* ========================================
   Navigation Tabs
   ======================================== */

.nav-container {
    background: var(--glass-white);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-md);
}

.nav-tabs {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 15px;
}

.nav-tab {
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    color: var(--text-light);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-tab:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.nav-tab.active {
    background: linear-gradient(135deg, 
        rgba(82, 183, 233, 0.3) 0%, 
        rgba(15, 125, 194, 0.3) 100%);
    border-color: var(--accent-light-blue);
    box-shadow: 0 5px 15px rgba(82, 183, 233, 0.2);
}

/* ========================================
   Form Styles
   ======================================== */

.form-group {
    margin-bottom: 25px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-white);
    font-weight: 500;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-input,
.form-select,
input[type="text"],
input[type="email"],
input[type="password"],
input[type="date"],
input[type="number"],
select,
textarea {
    width: 100%;
    padding: 12px 16px;
    background: white !important;
    color: #333 !important;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    font-size: 15px;
    transition: all 0.3s ease;
}

.form-input:focus,
.form-select:focus,
input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--accent-light-blue);
    box-shadow: 0 0 0 4px rgba(82, 183, 233, 0.1);
}

.form-input::placeholder {
    color: #999;
}

/* Checkbox & Radio */
input[type="checkbox"],
input[type="radio"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent-blue);
}

/* ========================================
   Stats & Cards
   ======================================== */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 25px;
    text-align: center;
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 10px 30px rgba(82, 183, 233, 0.2);
}

.stat-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-light-blue) 100%);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 28px;
    margin: 0 auto 15px;
    box-shadow: 0 5px 15px rgba(82, 183, 233, 0.3);
}

.stat-number {
    font-size: 36px;
    font-weight: bold;
    color: var(--text-white);
    margin-bottom: 5px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ========================================
   Content Sections
   ======================================== */

.content-section {
    background: var(--glass-white);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 30px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-md);
}

.section-title {
    font-size: 22px;
    color: var(--text-white);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    gap: 10px;
}

/* ========================================
   Modals
   ======================================== */

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background: rgba(30, 60, 114, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    padding: 30px;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.3s ease;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.modal-title {
    font-size: 24px;
    color: var(--text-white);
    font-weight: 600;
}

.btn-close {
    width: 35px;
    height: 35px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    color: var(--text-white);
    font-size: 24px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(90deg);
}

/* ========================================
   Tables
   ======================================== */

table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    overflow: hidden;
}

thead {
    background: rgba(82, 183, 233, 0.2);
}

th {
    padding: 15px;
    text-align: left;
    font-weight: 600;
    color: var(--text-white);
    text-transform: uppercase;
    font-size: 13px;
    letter-spacing: 1px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

td {
    padding: 12px 15px;
    color: var(--text-light);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

tr:hover td {
    background: rgba(255, 255, 255, 0.05);
}

/* ========================================
   Alerts & Notifications
   ======================================== */

.alert {
    padding: 15px 20px;
    border-radius: 12px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: slideIn 0.3s ease;
    backdrop-filter: blur(10px);
    border: 1px solid;
}

.alert-success {
    background: rgba(16, 185, 129, 0.2);
    border-color: rgba(16, 185, 129, 0.3);
    color: #10b981;
}

.alert-error {
    background: rgba(239, 68, 68, 0.2);
    border-color: rgba(239, 68, 68, 0.3);
    color: #ef4444;
}

.alert-info {
    background: rgba(82, 183, 233, 0.2);
    border-color: rgba(82, 183, 233, 0.3);
    color: var(--accent-light-blue);
}

/* ========================================
   Login Page Specific
   ======================================== */

.login-container {
    background: rgba(30, 60, 114, 0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 50px;
    border-radius: 20px;
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.main-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.info-section {
    color: var(--text-white);
    padding: 40px;
}

.info-section h2 {
    font-size: 36px;
    margin-bottom: 20px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.features {
    background: var(--glass-white);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 15px;
    padding: 30px;
    margin-top: 30px;
}

.feature-item {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.feature-icon {
    width: 40px;
    height: 40px;
    background: rgba(82, 183, 233, 0.2);
    border: 1px solid rgba(82, 183, 233, 0.3);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    font-size: 20px;
}

/* ========================================
   Animations
   ======================================== */

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

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

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

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

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-top: 4px solid var(--accent-light-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 1024px) {
    .main-container {
        grid-template-columns: 1fr;
    }
    
    .info-section {
        display: none;
    }
    
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
}

@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .nav-tabs {
        flex-direction: column;
        width: 100%;
    }
    
    .nav-tab {
        width: 100%;
    }
    
    .modal-content {
        width: 95%;
        padding: 20px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    table {
        font-size: 14px;
    }
    
    th, td {
        padding: 8px;
    }
}

/* ========================================
   Utility Classes
   ======================================== */

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

.mt-1 { margin-top: 10px; }
.mt-2 { margin-top: 20px; }
.mt-3 { margin-top: 30px; }
.mb-1 { margin-bottom: 10px; }
.mb-2 { margin-bottom: 20px; }
.mb-3 { margin-bottom: 30px; }

.p-1 { padding: 10px; }
.p-2 { padding: 20px; }
.p-3 { padding: 30px; }

.gap-1 { gap: 10px; }
.gap-2 { gap: 20px; }
.gap-3 { gap: 30px; }

.flex { display: flex; }
.flex-column { flex-direction: column; }
.align-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }

.hidden { display: none; }
.visible { display: block; }

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

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: rgba(82, 183, 233, 0.3);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(82, 183, 233, 0.5);
}