/* PulseClub - Main Stylesheet
 * Based on modern design patterns from AsmrProg repositories
 * Implements: Glass morphism, smooth animations, responsive design
 */

/* ============================================
   CSS VARIABLES - Design System
   ============================================ */
:root {
    /* Colors - Neon Cyberpunk Theme */
    --neon-green: #39ff14;
    --neon-purple: #bc13fe;
    --neon-blue: #00d4ff;
    --dark-bg: #0a0a0a;
    --dark-card: #1a1a1a;
    --dark-border: #2a2a2a;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--neon-green) 0%, #2ecc71 100%);
    --gradient-dark: linear-gradient(135deg, #1a1a1a 0%, #0a0a0a 100%);
    --gradient-glow: linear-gradient(135deg, rgba(57, 255, 20, 0.1) 0%, rgba(188, 19, 254, 0.1) 100%);
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.3);
    --shadow-neon: 0 0 20px rgba(57, 255, 20, 0.3);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Inter', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--dark-bg);
    color: #ffffff;
    line-height: 1.6;
    overflow-x: hidden;
}

/* ============================================
   GLASS MORPHISM EFFECTS
   ============================================ */
.glass {
    background: rgba(26, 26, 26, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

.glass-card {
    background: rgba(26, 26, 26, 0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
}

.glass-card:hover {
    transform: translateY(-5px);
    border-color: rgba(57, 255, 20, 0.3);
    box-shadow: 0 0 30px rgba(57, 255, 20, 0.2);
}

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

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(57, 255, 20, 0.3);
    }
    50% {
        box-shadow: 0 0 40px rgba(57, 255, 20, 0.6);
    }
}

/* Animation Classes */
.animate-fade-in {
    animation: fadeIn 0.6s ease-out forwards;
}

.animate-fade-in-up {
    animation: fadeInUp 0.8s ease-out forwards;
}

.animate-fade-in-down {
    animation: fadeInDown 0.8s ease-out forwards;
}

.animate-slide-in-left {
    animation: slideInLeft 0.8s ease-out forwards;
}

.animate-slide-in-right {
    animation: slideInRight 0.8s ease-out forwards;
}

.animate-pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

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

/* Delay Classes */
.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }
.delay-400 { animation-delay: 400ms; }
.delay-500 { animation-delay: 500ms; }

/* ============================================
   BUTTONS
   ============================================ */
.btn-neon {
    background: var(--gradient-primary);
    color: #000;
    font-weight: 700;
    border: none;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
}

.btn-neon::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left var(--transition-slow);
}

.btn-neon:hover::before {
    left: 100%;
}

.btn-neon:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(57, 255, 20, 0.4);
}

.btn-glass {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    transition: all var(--transition-base);
}

.btn-glass:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: var(--neon-green);
    color: var(--neon-green);
}

/* ============================================
   CARDS
   ============================================ */
.feature-card {
    background: var(--dark-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    border: 1px solid var(--dark-border);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-glow);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--neon-green);
    box-shadow: var(--shadow-neon);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-card > * {
    position: relative;
    z-index: 1;
}

/* ============================================
   GRADIENTS & BACKGROUNDS
   ============================================ */
.bg-gradient-primary {
    background: var(--gradient-primary);
}

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

.bg-mesh {
    background-image: 
        radial-gradient(at 40% 20%, rgba(57, 255, 20, 0.1) 0px, transparent 50%),
        radial-gradient(at 80% 0%, rgba(188, 19, 254, 0.1) 0px, transparent 50%),
        radial-gradient(at 0% 50%, rgba(0, 212, 255, 0.1) 0px, transparent 50%);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.hover-lift {
    transition: transform var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-5px);
}

.hover-scale {
    transition: transform var(--transition-base);
}

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

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

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

.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.blur-sm {
    filter: blur(4px);
}

.blur-md {
    filter: blur(8px);
}

.blur-lg {
    filter: blur(16px);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 768px) {
    :root {
        --spacing-xl: 1.5rem;
        --spacing-2xl: 2rem;
    }
    
    .glass-card {
        padding: var(--spacing-lg);
    }
}

/* ============================================
   LOADING STATES
   ============================================ */
.skeleton {
    background: linear-gradient(90deg, #1a1a1a 25%, #2a2a2a 50%, #1a1a1a 75%);
    background-size: 200% 100%;
    animation: loading 1.5s ease-in-out infinite;
}

@keyframes loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* ============================================
   SCROLLBAR STYLING
   ============================================ */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--dark-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--dark-card);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--neon-green);
}