/* ===========================================
   GLASSMORPHISM THEME SYSTEM
   =========================================== */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Lexend:wght@300;400;500;600;700;800&display=swap');

/* ===========================================
   CSS CUSTOM PROPERTIES (THEME VARIABLES)
   =========================================== */
:root {
    /* Background Gradients */
    --bg-main: #F8F8F8;
    --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --bg-gradient-alt: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --bg-gradient-dark: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    
    /* Color Palette */
    --primary-blue: #667eea;
    --secondary-purple: #764ba2;
    --accent-color: #8B5CF6;
    --accent-secondary: #A78BFA;
    --text-primary: #2D2D3A;
    --text-secondary: #6B7280;
    --text-light: #9CA3AF;
    --text-white: #FFFFFF;
    --error-color: #EF4444;
    --success-color: #10B981;
    --warning-color: #F59E0B;
    --info-color: #3B82F6;
    
    /* Glassmorphism Base Properties */
    --glass-blur: 10px;
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-bg-light: rgba(255, 255, 255, 0.15);
    --glass-bg-medium: rgba(255, 255, 255, 0.2);
    --glass-bg-heavy: rgba(255, 255, 255, 0.25);
    --glass-border: 1px solid rgba(255, 255, 255, 0.2);
    --glass-border-light: 1px solid rgba(255, 255, 255, 0.1);
    --glass-border-heavy: 1px solid rgba(255, 255, 255, 0.3);
    --glass-border-radius: 12px;
    --glass-border-radius-sm: 8px;
    --glass-border-radius-lg: 16px;
    --glass-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    --glass-shadow-light: 0 2px 20px rgba(0, 0, 0, 0.05);
    --glass-shadow-heavy: 0 8px 40px rgba(0, 0, 0, 0.15);
    
    /* Typography */
    --heading-font: 'Lexend', sans-serif;
    --body-font: 'Lexend', sans-serif;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Z-Index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--body-font);
    font-weight: var(--font-weight-normal);
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-gradient);
    min-height: 100vh;
    overflow-x: hidden;
}

/* ===========================================
   GLASSMORPHISM UTILITY CLASSES
   =========================================== */

/* Base Glass Container */
.glass-container {
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    background: var(--glass-bg);
    border: var(--glass-border);
    border-radius: var(--glass-border-radius);
    box-shadow: var(--glass-shadow);
    transition: all var(--transition-normal);
}

/* Glass Card Variations */
.glass-card {
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    background: var(--glass-bg-light);
    border: var(--glass-border);
    border-radius: var(--glass-border-radius);
    box-shadow: var(--glass-shadow);
    transition: all var(--transition-normal);
    padding: var(--spacing-lg);
}

.glass-card-light {
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    background: var(--glass-bg);
    border: var(--glass-border-light);
    border-radius: var(--glass-border-radius);
    box-shadow: var(--glass-shadow-light);
}

.glass-card-heavy {
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    background: var(--glass-bg-heavy);
    border: var(--glass-border-heavy);
    border-radius: var(--glass-border-radius-lg);
    box-shadow: var(--glass-shadow-heavy);
}

/* Glass Form Elements */
.glass-form {
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    background: var(--glass-bg-light);
    border: var(--glass-border);
    border-radius: var(--glass-border-radius-lg);
    box-shadow: var(--glass-shadow);
    padding: var(--spacing-2xl);
    transition: all var(--transition-normal);
}

.glass-input {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--glass-border-radius-sm);
    color: var(--text-primary);
    padding: var(--spacing-md);
    font-family: var(--body-font);
    font-size: 1rem;
    transition: all var(--transition-fast);
    width: 100%;
}

.glass-input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.2);
    transform: translateY(-1px);
}

.glass-input::placeholder {
    color: var(--text-light);
}

/* Glass Buttons */
.glass-btn {
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    background: var(--glass-bg-light);
    border: var(--glass-border);
    border-radius: var(--glass-border-radius-sm);
    color: var(--text-primary);
    padding: var(--spacing-md) var(--spacing-lg);
    font-family: var(--body-font);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.glass-btn:hover {
    background: var(--glass-bg-medium);
    transform: translateY(-2px);
    box-shadow: var(--glass-shadow-heavy);
    color: var(--text-primary);
    text-decoration: none;
}

.glass-btn-primary {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-purple));
    color: var(--text-white);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.glass-btn-primary:hover {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-secondary));
    color: var(--text-white);
    transform: translateY(-2px) scale(1.02);
}

.glass-btn-secondary {
    background: var(--glass-bg);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-primary);
}

.glass-btn-danger {
    background: linear-gradient(135deg, var(--error-color), #DC2626);
    color: var(--text-white);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.glass-btn-success {
    background: linear-gradient(135deg, var(--success-color), #059669);
    color: var(--text-white);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

/* Glass Navigation */
.glass-nav {
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    background: var(--glass-bg);
    border-bottom: var(--glass-border-light);
    box-shadow: var(--glass-shadow-light);
}

.glass-sidebar {
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    background: var(--glass-bg-light);
    border-right: var(--glass-border-light);
    box-shadow: var(--glass-shadow);
}

/* Glass Modal */
.glass-modal {
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    background: var(--glass-bg-light);
    border: var(--glass-border);
    border-radius: var(--glass-border-radius-lg);
    box-shadow: var(--glass-shadow-heavy);
}

.glass-modal-backdrop {
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    background: rgba(0, 0, 0, 0.1);
}

/* ===========================================
   TYPOGRAPHY CLASSES
   =========================================== */
.font-heading {
    font-family: var(--heading-font);
    font-weight: var(--font-weight-bold);
}

.font-body {
    font-family: var(--body-font);
}

.text-primary {
    color: var(--text-primary);
}

.text-secondary {
    color: var(--text-secondary);
}

.text-light {
    color: var(--text-light);
}

.text-white {
    color: var(--text-white);
}

.text-accent {
    color: var(--accent-color);
}

/* Heading Sizes */
.h1-glass {
    font-family: var(--heading-font);
    font-weight: var(--font-weight-extrabold);
    font-size: 2.5rem;
    line-height: 1.2;
    color: var(--text-primary);
}

.h2-glass {
    font-family: var(--heading-font);
    font-weight: var(--font-weight-bold);
    font-size: 2rem;
    line-height: 1.3;
    color: var(--text-primary);
}

.h3-glass {
    font-family: var(--heading-font);
    font-weight: var(--font-weight-semibold);
    font-size: 1.5rem;
    line-height: 1.4;
    color: var(--text-primary);
}

.h4-glass {
    font-family: var(--heading-font);
    font-weight: var(--font-weight-semibold);
    font-size: 1.25rem;
    line-height: 1.4;
    color: var(--text-primary);
}

/* ===========================================
   LAYOUT UTILITIES
   =========================================== */
.glass-page {
    min-height: 100vh;
    background: var(--bg-gradient);
    padding: var(--spacing-lg);
}

.glass-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

.glass-grid {
    display: grid;
    gap: var(--spacing-lg);
}

.glass-grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.glass-grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.glass-grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* ===========================================
   COMPONENT SPECIFIC STYLES
   =========================================== */

/* Status Badges */
.glass-badge {
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    background: var(--glass-bg);
    border: var(--glass-border-light);
    border-radius: 20px;
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.glass-badge-success {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success-color);
    border-color: rgba(16, 185, 129, 0.3);
}

.glass-badge-warning {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning-color);
    border-color: rgba(245, 158, 11, 0.3);
}

.glass-badge-danger {
    background: rgba(239, 68, 68, 0.2);
    color: var(--error-color);
    border-color: rgba(239, 68, 68, 0.3);
}

.glass-badge-info {
    background: rgba(59, 130, 246, 0.2);
    color: var(--info-color);
    border-color: rgba(59, 130, 246, 0.3);
}

/* Progress Bars */
.glass-progress {
    background: var(--glass-bg);
    border-radius: 10px;
    height: 8px;
    overflow: hidden;
    border: var(--glass-border-light);
}

.glass-progress-bar {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-purple));
    height: 100%;
    border-radius: 10px;
    transition: width var(--transition-slow);
}

/* Tables */
.glass-table {
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    background: var(--glass-bg-light);
    border: var(--glass-border);
    border-radius: var(--glass-border-radius);
    box-shadow: var(--glass-shadow);
    overflow: hidden;
}

.glass-table th {
    background: var(--glass-bg);
    color: var(--text-primary);
    font-weight: var(--font-weight-semibold);
    padding: var(--spacing-md);
    border-bottom: var(--glass-border-light);
}

.glass-table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.glass-table tbody tr:hover {
    background: var(--glass-bg);
}

/* ===========================================
   ANIMATIONS & TRANSITIONS
   =========================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

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

.animate-fade-in {
    animation: fadeIn 0.4s ease-out;
}

.animate-slide-in-right {
    animation: slideInRight 0.5s ease-out;
}

/* Hover Effects */
.glass-hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: var(--glass-shadow-heavy);
}

.glass-hover-scale:hover {
    transform: scale(1.02);
}

.glass-hover-glow:hover {
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.3);
}

/* ===========================================
   RESPONSIVE DESIGN
   =========================================== */
@media (max-width: 768px) {
    :root {
        --glass-blur: 8px;
        --glass-border-radius: 8px;
        --glass-border-radius-lg: 12px;
        --spacing-lg: 1rem;
        --spacing-xl: 1.5rem;
        --spacing-2xl: 2rem;
    }
    
    .h1-glass {
        font-size: 2rem;
    }
    
    .h2-glass {
        font-size: 1.75rem;
    }
    
    .h3-glass {
        font-size: 1.25rem;
    }
    
    .glass-form {
        padding: var(--spacing-lg);
    }
    
    .glass-grid-2,
    .glass-grid-3,
    .glass-grid-4 {
        grid-template-columns: 1fr;
    }
    
    /* Mobile glassmorphism optimizations */
    .glass-container {
        padding: 1rem;
        margin: 0.5rem;
    }
    
    .glass-card {
        margin-bottom: 1rem;
        padding: 1rem;
    }
    
    .glass-btn {
        width: 100%;
        margin-bottom: 0.5rem;
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
    }
    
    /* Reduce blur effects on mobile for better performance */
    .glass-card,
    .glass-form,
    .glass-container {
        backdrop-filter: blur(5px);
        -webkit-backdrop-filter: blur(5px);
    }
    
    /* Adjust welcome page for mobile */
    .welcome-feature-card {
        margin-bottom: 1rem;
    }
    
    .welcome-logo {
        width: 70px;
        height: 70px;
    }
    
    .welcome-feature-card .glass-container {
        width: 55px !important;
        height: 55px !important;
    }
    
    /* Adjust spacing for mobile */
    .mb-5 {
        margin-bottom: 2rem !important;
    }
    
    .py-4 {
        padding-top: 1rem !important;
        padding-bottom: 1rem !important;
    }
    
    /* Mobile table adjustments */
    .glass-table {
        font-size: 0.85rem;
    }
    
    .glass-table th,
    .glass-table td {
        padding: 0.75rem 0.5rem;
    }
    
    /* Mobile sidebar */
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
}

@media (max-width: 480px) {
    :root {
        --glass-blur: 6px;
        --spacing-md: 0.75rem;
        --spacing-lg: 1rem;
    }
    
    .glass-page {
        padding: var(--spacing-md);
    }
    
    .glass-content {
        padding: var(--spacing-md);
    }
    
    .glass-form {
        padding: var(--spacing-md);
    }
    
    /* Mobile-specific glassmorphism optimizations */
    .glass-container {
        padding: 0.75rem;
        margin: 0.25rem;
    }
    
    .glass-card {
        padding: 0.75rem;
        margin-bottom: 0.75rem;
    }
    
    .glass-btn {
        width: 100%;
        margin-bottom: 0.5rem;
        padding: 0.6rem 0.8rem;
        font-size: 0.85rem;
    }
    
    /* Further reduce blur for very small screens */
    .glass-card,
    .glass-form,
    .glass-container {
        backdrop-filter: blur(3px);
        -webkit-backdrop-filter: blur(3px);
    }
    
    /* Compact text sizes for very small screens */
    .h1-glass {
        font-size: 1.5rem;
    }
    
    .h2-glass {
        font-size: 1.3rem;
    }
    
    .h3-glass {
        font-size: 1.1rem;
    }
    
    .h4-glass {
        font-size: 1rem;
    }
    
    /* Adjust welcome page for very small screens */
    .welcome-logo {
        width: 60px;
        height: 60px;
    }
    
    .welcome-feature-card .glass-container {
        width: 50px !important;
        height: 50px !important;
    }
    
    /* Stack all grid layouts on very small screens */
    .glass-grid-2,
    .glass-grid-3,
    .glass-grid-4 {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    /* Adjust table responsiveness */
    .glass-table {
        font-size: 0.8rem;
    }
    
    .glass-table th,
    .glass-table td {
        padding: 0.5rem 0.25rem;
    }
    
    /* Optimize sidebar for mobile */
    .sidebar {
        width: 100%;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    /* Mobile navigation adjustments */
    .navbar-toggler {
        border: none;
        padding: 0.25rem 0.5rem;
    }
    
    .navbar-collapse {
        background: var(--glass-bg);
        backdrop-filter: var(--glass-blur);
        border-radius: var(--glass-border-radius);
        margin-top: 0.5rem;
        padding: 1rem;
    }
}

/* ===========================================
   BROWSER COMPATIBILITY
   =========================================== */
@supports not (backdrop-filter: blur(10px)) {
    .glass-container,
    .glass-card,
    .glass-form,
    .glass-nav,
    .glass-sidebar,
    .glass-modal {
        background: rgba(255, 255, 255, 0.9);
        border: 1px solid rgba(255, 255, 255, 0.5);
    }
}

/* ===========================================
   DARK MODE SUPPORT (Future Enhancement)
   =========================================== */
@media (prefers-color-scheme: dark) {
    :root {
        --text-primary: #F9FAFB;
        --text-secondary: #D1D5DB;
        --text-light: #9CA3AF;
        --glass-bg: rgba(0, 0, 0, 0.1);
        --glass-bg-light: rgba(0, 0, 0, 0.15);
        --glass-bg-medium: rgba(0, 0, 0, 0.2);
        --glass-bg-heavy: rgba(0, 0, 0, 0.25);
        --glass-border: 1px solid rgba(255, 255, 255, 0.1);
        --glass-border-light: 1px solid rgba(255, 255, 255, 0.05);
        --glass-border-heavy: 1px solid rgba(255, 255, 255, 0.2);
    }
}