/* ==========================================
   CSS CUSTOM PROPERTIES - PREMIUM DESIGN SYSTEM
   ========================================== */
:root {
    /* Premium Color Palette */
    --deep-blue-900: #0a1929;
    --deep-blue-800: #1e3a5f;
    --deep-blue-700: #2c5282;
    --purple-600: #6b46c1;
    --purple-500: #9333ea;
    --purple-400: #a855f7;
    --gold-500: #f59e0b;
    --gold-400: #fbbf24;
    --gold-300: #fcd34d;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--deep-blue-800) 0%, var(--purple-600) 100%);
    --gradient-secondary: linear-gradient(135deg, var(--purple-500) 0%, var(--gold-500) 100%);
    --gradient-accent: linear-gradient(135deg, var(--deep-blue-900) 0%, var(--purple-500) 50%, var(--gold-500) 100%);
    --gradient-card-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-card-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-card-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-card-4: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    --gradient-card-5: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    --gradient-card-6: linear-gradient(135deg, #30cfd0 0%, #330867 100%);
    --gradient-card-7: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
    
    /* Glass Effect */
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    
    /* Typography */
    --font-primary: 'Inter', sans-serif;
    --font-heading: 'Poppins', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.6s ease-out;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 30px rgba(147, 51, 234, 0.4);
    --shadow-gold-glow: 0 0 30px rgba(245, 158, 11, 0.4);
}

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: var(--font-primary);
    background: var(--deep-blue-900);
    color: #ffffff;
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* ==========================================
   THREE.JS BACKGROUND CANVAS
   ========================================== */
#bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.6;
}

/* ==========================================
   CONTAINER
   ========================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ==========================================
   HEADER SECTION
   ========================================== */
.header {
    padding: var(--spacing-2xl) 0;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    animation: fadeInDown var(--transition-slow);
}

.header-content {
    text-align: center;
}

.name {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
    animation: slideInLeft var(--transition-slow) 0.2s both;
}

.tagline {
    font-size: 1.25rem;
    color: var(--gold-300);
    margin-bottom: var(--spacing-lg);
    animation: slideInRight var(--transition-slow) 0.3s both;
}

.info-grid {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
    animation: fadeIn var(--transition-slow) 0.4s both;
}

.info-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    transition: all var(--transition-normal);
}

.info-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
    border-color: var(--purple-500);
}

.info-item i {
    color: var(--gold-400);
    font-size: 1.1rem;
}

.skills {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    animation: fadeIn var(--transition-slow) 0.5s both;
}

.skill-tag {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--gradient-primary);
    border-radius: 25px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all var(--transition-normal);
    cursor: default;
}

.skill-tag:hover {
    transform: scale(1.1) rotate(2deg);
    box-shadow: var(--shadow-glow);
}

/* ==========================================
   HERO SECTION
   ========================================== */
.hero {
    padding: var(--spacing-2xl) 0;
    text-align: center;
    animation: fadeIn var(--transition-slow) 0.6s both;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--gradient-secondary);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.cta-button::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 0.5s;
}

.cta-button:hover::before {
    left: 100%;
}

.cta-button:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: var(--shadow-gold-glow);
}

.cta-button i {
    animation: bounce 2s infinite;
}

/* ==========================================
   PROJECTS SECTION
   ========================================== */
.projects {
    padding: var(--spacing-2xl) 0;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-sm);
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--spacing-2xl);
}

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

.project-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    overflow: hidden;
    transition: all var(--transition-normal);
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp var(--transition-slow) forwards;
    cursor: pointer;
}

.project-card:nth-child(1) { animation-delay: 0.1s; }
.project-card:nth-child(2) { animation-delay: 0.15s; }
.project-card:nth-child(3) { animation-delay: 0.2s; }
.project-card:nth-child(4) { animation-delay: 0.25s; }
.project-card:nth-child(5) { animation-delay: 0.3s; }
.project-card:nth-child(6) { animation-delay: 0.35s; }
.project-card:nth-child(7) { animation-delay: 0.4s; }
.project-card:nth-child(8) { animation-delay: 0.45s; }
.project-card:nth-child(9) { animation-delay: 0.5s; }
.project-card:nth-child(10) { animation-delay: 0.55s; }
.project-card:nth-child(11) { animation-delay: 0.6s; }
.project-card:nth-child(12) { animation-delay: 0.65s; }
.project-card:nth-child(13) { animation-delay: 0.7s; }
.project-card:nth-child(14) { animation-delay: 0.75s; }
.project-card:nth-child(15) { animation-delay: 0.8s; }
.project-card:nth-child(16) { animation-delay: 0.85s; }
.project-card:nth-child(17) { animation-delay: 0.9s; }
.project-card:nth-child(18) { animation-delay: 0.95s; }
.project-card:nth-child(19) { animation-delay: 1s; }
.project-card:nth-child(20) { animation-delay: 1.05s; }

.project-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--shadow-glow);
    border-color: var(--purple-500);
}

.project-image {
    position: relative;
    height: 200px;
    overflow: hidden;
    background: var(--deep-blue-800);
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.project-card:hover .project-image img {
    transform: scale(1.1) rotate(2deg);
}

/* Gradient backgrounds for cards without images */
.gradient-bg-1 { background: var(--gradient-card-1); }
.gradient-bg-2 { background: var(--gradient-card-2); }
.gradient-bg-3 { background: var(--gradient-card-3); }
.gradient-bg-4 { background: var(--gradient-card-4); }
.gradient-bg-5 { background: var(--gradient-card-5); }
.gradient-bg-6 { background: var(--gradient-card-6); }
.gradient-bg-7 { background: var(--gradient-card-7); }

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-overlay i {
    font-size: 3rem;
    color: white;
    transform: scale(0);
    transition: transform var(--transition-normal);
}

.project-card:hover .project-overlay i {
    transform: scale(1) rotate(360deg);
}

.project-content {
    padding: var(--spacing-md);
}

.project-title {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--gold-300);
}

.project-description {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-md);
    font-size: 0.95rem;
    line-height: 1.6;
}

.project-tags {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.tag {
    padding: 0.3rem 0.8rem;
    background: var(--deep-blue-800);
    border: 1px solid var(--purple-600);
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--purple-400);
    transition: all var(--transition-fast);
}

.tag:hover {
    background: var(--purple-600);
    color: white;
    transform: translateY(-2px);
}

/* ==========================================
   CONTACT SECTION
   ========================================== */
.contact {
    padding: var(--spacing-2xl) 0;
    text-align: center;
}

.contact-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    margin-top: var(--spacing-xl);
}

.contact-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.contact-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.contact-btn:hover::before {
    width: 300px;
    height: 300px;
}

.github-btn {
    background: linear-gradient(135deg, #24292e 0%, #4a5568 100%);
    color: white;
}

.github-btn:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 0 30px rgba(36, 41, 46, 0.6);
}

.whatsapp-btn {
    background: linear-gradient(135deg, #25d366 0%, #128c7e 100%);
    color: white;
}

.whatsapp-btn:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 0 30px rgba(37, 211, 102, 0.6);
    animation: pulse 1s infinite;
}

.contact-btn i {
    font-size: 1.5rem;
    position: relative;
    z-index: 1;
}

.contact-btn span {
    position: relative;
    z-index: 1;
}

/* ==========================================
   FOOTER
   ========================================== */
.footer {
    padding: var(--spacing-xl) 0;
    text-align: center;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--glass-border);
    margin-top: var(--spacing-2xl);
}

.footer p {
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: var(--spacing-xs);
}

.footer-tagline {
    color: rgba(255, 255, 255, 0.5);
}

.footer-tagline i {
    color: #e74c3c;
    animation: heartbeat 1.5s infinite;
}

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

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

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

@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 bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: translateY(-5px) scale(1.05);
    }
    50% {
        transform: translateY(-5px) scale(1.08);
    }
}

@keyframes heartbeat {
    0%, 100% {
        transform: scale(1);
    }
    10%, 30% {
        transform: scale(1.1);
    }
    20%, 40% {
        transform: scale(1);
    }
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */
@media (max-width: 768px) {
    .name {
        font-size: 2rem;
    }
    
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .info-grid {
        flex-direction: column;
        align-items: center;
    }
    
    .contact-links {
        flex-direction: column;
        align-items: center;
    }
    
    .contact-btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .name {
        font-size: 1.5rem;
    }
    
    .tagline {
        font-size: 1rem;
    }
    
    .hero-title {
        font-size: 1.5rem;
    }
    
    .cta-button {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: 1rem;
    }
    
    .project-image {
        height: 150px;
    }
}

/* ==========================================
   SMOOTH SCROLL REVEAL
   ========================================== */
.reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: all var(--transition-slow);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================
   3D CARD EFFECT
   ========================================== */
.project-card {
    transform-style: preserve-3d;
    perspective: 1000px;
}

.project-card:hover {
    transform: translateY(-10px) rotateX(5deg) rotateY(5deg);
}