/* 
    Tik Tk - Glassmorphism UI Upgrade 
    Professional Glassmorphism System
*/

:root {
    /* Glassmorphism Variables - Upgraded */
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.4);
    --glass-blur: blur(20px);
    --glass-inner-glow: inset 0 0 20px 0 rgba(255, 255, 255, 0.05), inset 0 0 0 1px rgba(255, 255, 255, 0.1);
    
    /* Premium Gradients */
    --grad-primary: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
    --grad-surface: linear-gradient(145deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.02) 100%);
    
    /* Animation Speeds */
    --anim-slow: 20s;
    --anim-med: 0.5s;
    --anim-fast: 0.2s;
}

/* 1. Modern Animated Background */
body {
    background: #05080d !important;
    overflow-x: hidden;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Fix for background flicker on some browsers */
.glass-bg-container {
    pointer-events: none;
    backface-visibility: hidden;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    background: radial-gradient(circle at 50% 50%, #111827, #05080d);
    overflow: hidden;
}

.glass-shape {
    position: absolute;
    filter: blur(80px);
    border-radius: 50%;
    z-index: -1;
    opacity: 0.4;
    animation: float-shapes var(--anim-slow) infinite alternate ease-in-out;
}

.shape-1 {
    width: 400px;
    height: 400px;
    background: #6366f1;
    top: -100px;
    left: -100px;
    animation-delay: 0s;
}

.shape-2 {
    width: 350px;
    height: 350px;
    background: #10b981;
    bottom: -50px;
    right: -50px;
    animation-delay: -5s;
}

.shape-3 {
    width: 300px;
    height: 300px;
    background: #f59e0b;
    top: 50%;
    left: 80%;
    animation-delay: -10s;
}

@keyframes float-shapes {
    0% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -50px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.9); }
    100% { transform: translate(0, 0) scale(1); }
}

/* 2. Enhanced Glass Cards */
.card, .stat-card, .progress-section, .timer-container, .integrated-tasks, 
.task-header, .task-list-container, .modal-content, .about-hero, .team-member,
.task-input-section, .quadrant, .course-card, .video-container, .field-card,
.course-meta, .quiz-section, .quiz-option {
    background: var(--grad-surface) !important;
    backdrop-filter: var(--glass-blur) saturate(250%) !important;
    -webkit-backdrop-filter: var(--glass-blur) saturate(250%) !important;
    border: 1px solid var(--glass-border) !important;
    box-shadow: var(--glass-shadow), var(--glass-inner-glow) !important;
    transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1) !important;
    position: relative;
}

/* Edge Lighting and Reflections */
.card::before, .stat-card::before, .team-member::before, .field-card::before, .glass-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 1px;
    background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 50%, rgba(255,255,255,0.05) 100%);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
    z-index: 2;
}

.glass-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 200%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.05), transparent);
    transform: skewX(-20deg);
    transition: 0.7s;
    pointer-events: none;
}

.glass-card:hover::after {
    left: 100%;
}

.card:hover, .stat-card:hover, .team-member:hover, .course-card:hover, .field-card:hover {
    transform: translateY(-10px) scale(1.02) !important;
    border-color: rgba(255, 255, 255, 0.4) !important;
    box-shadow: 0 30px 70px 0 rgba(0, 0, 0, 0.6), inset 0 0 15px rgba(255, 255, 255, 0.2) !important;
    background: linear-gradient(145deg, rgba(255,255,255,0.15) 0%, rgba(255,255,255,0.05) 100%) !important;
}

/* 3. Glass Navigation Bar */
nav {
    background: rgba(17, 24, 39, 0.6) !important;
    backdrop-filter: blur(20px) saturate(150%) !important;
    -webkit-backdrop-filter: blur(20px) saturate(150%) !important;
    border-bottom: 1px solid var(--glass-border) !important;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-links a {
    transition: var(--anim-fast) !important;
    border-radius: 12px !important;
}

.nav-links a:hover {
    background: rgba(255, 255, 255, 0.1) !important;
    color: #fff !important;
}

/* 4. Glass Buttons */
.btn, .controls-btn, .mode-btn {
    border-radius: 14px !important;
    backdrop-filter: blur(4px);
    transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1) !important;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
}

.btn-primary {
    background: var(--grad-primary) !important;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3) !important;
}

.btn-primary:hover {
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.5) !important;
    transform: translateY(-2px) scale(1.02) !important;
}

.btn-outline {
    background: rgba(255, 255, 255, 0.05) !important;
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.12) !important;
    border-color: rgba(255, 255, 255, 0.3) !important;
}

/* 5. Inputs and Forms */
input, select, textarea {
    background: rgba(255, 255, 255, 0.03) !important;
    backdrop-filter: blur(8px) !important;
    border: 1px solid var(--glass-border) !important;
    border-radius: 12px !important;
    color: #fff !important;
    padding: 12px 20px !important;
    transition: all 0.3s ease !important;
}

input:focus, select:focus {
    background: rgba(255, 255, 255, 0.07) !important;
    border-color: var(--primary) !important;
    box-shadow: 0 0 15px var(--primary-glow) !important;
    outline: none;
}

/* 6. Dashboard & Special Containers */
.stat-icon-wrapper {
    background: rgba(255, 255, 255, 0.05) !important;
    border: 1px solid var(--glass-border) !important;
    backdrop-filter: blur(4px);
}

.progress-container, .progress-bg {
    background: rgba(255, 255, 255, 0.05) !important;
    border: 1px solid var(--glass-border) !important;
    height: 14px !important;
}

.global-progress-bar, .progress-fill {
    box-shadow: 0 0 20px var(--secondary-glow) !important;
}

/* 7. Animations */
.hero, .container, main {
    animation: fadeIn 0.8s ease-out;
}

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

/* 8. Pomodoro Timer Specifics */
.timer-ring {
    background: rgba(255, 255, 255, 0.02) !important;
    border: 8px solid rgba(255, 255, 255, 0.05) !important;
    backdrop-filter: blur(10px);
}

.timer-ring.running {
    border-color: var(--primary) !important;
    box-shadow: 0 0 50px var(--primary-glow), inset 0 0 30px var(--primary-glow) !important;
}

/* Global Universal Responsiveness */
.container {
    padding: 3rem 5% !important;
    transition: padding 0.3s ease;
}

@media (max-width: 1024px) {
    .container { padding: 2rem 4% !important; }
    h2.section-title { font-size: 1.8rem !important; }
}

@media (max-width: 768px) {
    .container { padding: 1.5rem 3% !important; }
    
    /* Typography Adjustments */
    h2 { font-size: 1.75rem !important; }
    h3 { font-size: 1.4rem !important; }
    p { font-size: 1rem !important; }
    
    /* Hero Section Mobile Polish */
    .hero {
        padding: 1.5rem 0 !important;
        flex-direction: column !important;
        text-align: center;
        gap: 2.5rem !important;
    }
    
    .hero-content h2 { font-size: 2.25rem !important; }
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    .hero-actions .btn { width: 100% !important; }
    
    .image-container {
        width: 280px !important;
        height: 280px !important;
    }
    
    /* Grid Adjustments */
    .grid-2, .fields-grid, .team-grid {
        grid-template-columns: 1fr !important;
        gap: 1.25rem !important;
    }
    
    /* Nav Adjustments */
    .nav-links {
        padding: 6rem 1.5rem !important;
        align-items: center !important;
        text-align: center !important;
    }
    .nav-links a {
        width: 100% !important;
        padding: 1rem !important;
        font-size: 1.2rem !important;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    .nav-user {
        margin-left: 0.5rem !important;
    }
    .points-badge {
        padding: 0.4rem 0.8rem !important;
        font-size: 0.9rem !important;
    }
    
    /* Glass Components Mobile Polish */
    .card, .stat-card, .progress-section {
        padding: 1.25rem !important;
        border-radius: 20px !important;
    }
    
    .task-header, .task-input-section {
        padding: 1rem !important;
        border-radius: 16px !important;
    }
    
    /* Buttons Scaling */
    .btn {
        padding: 0.7rem 1.2rem !important;
        font-size: 0.95rem !important;
    }
}

/* Fix for background shapes on mobile */
@media (max-width: 480px) {
    .shape-1 { width: 250px; height: 250px; }
    .shape-2 { width: 200px; height: 200px; }
    .shape-3 { width: 180px; height: 180px; }
}

/* 9. Scrolling */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}