/* ==========================================================================
   PORTFOLIO WEBSITE - ADVANCED GLASSMORPHISM CSS
   Author: Sameer Momin
   Version: 1.0
   ========================================================================== */

/* ========== ROOT VARIABLES & THEME SETUP ========== */
:root {
    /* Color Palette - Dark Theme */
    --color-bg-primary: #0f0f1e;
    --color-bg-secondary: #1a1a2e;
    --color-bg-tertiary: #16213e;
    
    /* Neon Colors */
    --color-neon-blue: #00d4ff;
    --color-neon-purple: #b366ff;
    --color-neon-pink: #ff006e;
    --color-neon-cyan: #00ffff;
    
    /* Text Colors */
    --color-text-primary: #ffffff;
    --color-text-secondary: #e0e0e0;
    --color-text-tertiary: #a0a0a0;
    
    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-blur: 15px;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    
    /* Transitions */
    --transition-fast: 0.2s ease-in-out;
    --transition-base: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
    
    /* Z-indexes */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-backdrop: 1040;
    --z-loader: 9999;
}

/* ========== LIGHT THEME ========== */
body.light-theme {
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f5f5f7;
    --color-bg-tertiary: #eeeeef;
    
    --color-text-primary: #1a1a1a;
    --color-text-secondary: #4a4a4a;
    --color-text-tertiary: #8a8a8a;
    
    --glass-bg: rgba(0, 0, 0, 0.05);
    --glass-border: rgba(0, 0, 0, 0.1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--transition-base);
}

/* ========== ANIMATED BACKGROUND ========== */
.animated-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, 
        var(--color-bg-primary) 0%, 
        var(--color-bg-tertiary) 25%,
        var(--color-bg-primary) 50%,
        var(--color-bg-secondary) 100%
    );
    background-size: 400% 400%;
    animation: gradient-shift 15s ease infinite;
    z-index: -1;
}

@keyframes gradient-shift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* ========== CURSOR CUSTOMIZATION ========== */
.cursor,
.cursor-follower {
    pointer-events: none;
    position: fixed;
    display: none;
    z-index: var(--z-fixed);
}

.cursor {
    width: 8px;
    height: 8px;
    border: 2px solid var(--color-neon-cyan);
    border-radius: 50%;
    top: 0;
    left: 0;
}

.cursor-follower {
    width: 30px;
    height: 30px;
    border: 2px solid var(--color-neon-purple);
    border-radius: 50%;
    top: 0;
    left: 0;
    opacity: 0.5;
}

@media (hover: hover) and (pointer: fine) {
    .cursor,
    .cursor-follower {
        display: block;
    }
}

/* ========== SCROLL PROGRESS INDICATOR ========== */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-neon-blue) 0%, var(--color-neon-purple) 100%);
    width: 0%;
    z-index: var(--z-fixed);
    box-shadow: 0 0 20px var(--color-neon-blue);
}

/* ========== PAGE LOADER ========== */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-loader);
    animation: fadeOut 0.6s ease-in-out 2s forwards;
}

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

.loader-circle {
    width: 60px;
    height: 60px;
    border: 3px solid var(--glass-border);
    border-top: 3px solid var(--color-neon-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

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

@keyframes fadeOut {
    to {
        opacity: 0;
        visibility: hidden;
    }
}

.page-loader p {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    font-weight: 500;
}

/* ========== NAVIGATION BAR ========== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    border-bottom: 1px solid var(--glass-border);
    z-index: var(--z-sticky);
    padding: 1rem 0;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--glass-border);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
}

.logo-text {
    background: linear-gradient(135deg, var(--color-neon-cyan) 0%, var(--color-neon-purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    transition: all var(--transition-base);
}

.logo-bracket {
    color: var(--color-neon-blue);
}

.logo-text:hover {
    filter: drop-shadow(0 0 8px var(--color-neon-blue));
}

/* Navigation Menu */
.nav-menu {
    display: flex;
    gap: 2rem;
    list-style: none;
    align-items: center;
}

.nav-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-neon-blue), var(--color-neon-purple));
    transition: width var(--transition-base);
}

.nav-link:hover {
    color: var(--color-neon-cyan);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-right {
    display: flex;
    gap: 1rem;
    align-items: center;
}

/* Theme Toggle */
.theme-toggle {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--color-text-primary);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    font-size: 1.2rem;
}

.theme-toggle:hover {
    background: var(--glass-bg);
    border-color: var(--color-neon-blue);
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.3);
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    gap: 5px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--color-text-primary);
    border-radius: 3px;
    transition: all var(--transition-base);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(10px, 10px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ========== HERO SECTION ========== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 100px var(--spacing-lg) var(--spacing-xl);
    position: relative;
    overflow: hidden;
    margin-top: 60px;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.15) 0%, rgba(0, 212, 255, 0) 70%);
    border-radius: 50%;
    filter: blur(40px);
    animation: float 6s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(179, 102, 255, 0.15) 0%, rgba(179, 102, 255, 0) 70%);
    border-radius: 50%;
    filter: blur(40px);
    animation: float 8s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(30px); }
}

.hero-content {
    max-width: 1200px;
    width: 100%;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.greeting {
    color: var(--color-neon-blue);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    opacity: 0;
    animation: slideInUp 0.8s ease-out forwards;
}

.hero-title {
    font-family: 'Playfair Display', serif;
    font-size: 4.5rem;
    line-height: 1.2;
    margin: var(--spacing-md) 0;
    opacity: 0;
    animation: slideInUp 0.8s ease-out 0.2s forwards;
}

.name-gradient {
    background: linear-gradient(135deg, var(--color-neon-cyan) 0%, var(--color-neon-blue) 50%, var(--color-neon-purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 20px rgba(0, 212, 255, 0.3));
}

.hero-tagline {
    font-size: 1.5rem;
    color: var(--color-neon-cyan);
    margin: var(--spacing-md) 0;
    opacity: 0;
    animation: slideInUp 0.8s ease-out 0.4s forwards;
}

.hero-intro {
    max-width: 700px;
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin: var(--spacing-lg) 0 var(--spacing-xl);
    opacity: 0;
    animation: slideInUp 0.8s ease-out 0.6s forwards;
}

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

/* CTA Buttons */
.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: var(--spacing-xl);
    opacity: 0;
    animation: slideInUp 0.8s ease-out 0.8s forwards;
}

.btn {
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    font-family: 'Poppins', sans-serif;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

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

/* Primary Button */
.btn-primary {
    background: linear-gradient(135deg, var(--color-neon-blue) 0%, var(--color-neon-cyan) 100%);
    color: var(--color-bg-primary);
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 40px rgba(0, 212, 255, 0.5);
}

/* Secondary Button */
.btn-secondary {
    background: var(--glass-bg);
    color: var(--color-neon-cyan);
    border: 2px solid var(--color-neon-cyan);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(0, 212, 255, 0.1);
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.4);
    transform: translateY(-3px);
}

/* Tertiary Button */
.btn-tertiary {
    background: var(--glass-bg);
    color: var(--color-neon-purple);
    border: 2px solid var(--color-neon-purple);
}

.btn-tertiary:hover {
    background: rgba(179, 102, 255, 0.1);
    box-shadow: 0 0 30px rgba(179, 102, 255, 0.4);
    transform: translateY(-3px);
}

/* Submit Button */
.btn-submit {
    background: linear-gradient(135deg, var(--color-neon-blue) 0%, var(--color-neon-purple) 100%);
    color: var(--color-bg-primary);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.2);
    width: 100%;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 40px rgba(0, 212, 255, 0.4);
}

/* Social Icons */
.social-icons {
    display: flex;
    gap: 1.5rem;
    opacity: 0;
    animation: slideInUp 0.8s ease-out 1s forwards;
}

.social-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--glass-bg);
    border: 2px solid var(--glass-border);
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    transition: all var(--transition-base);
    cursor: pointer;
    text-decoration: none;
}

.social-icon:hover {
    border-color: var(--color-neon-cyan);
    background: rgba(0, 212, 255, 0.1);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
    transform: translateY(-5px);
}

/* Floating Icons */
.floating-icons {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointerEvents: none;
}

.float-icon {
    position: absolute;
    font-size: 3rem;
    opacity: 0.1;
    animation: floating 6s ease-in-out infinite;
    color: var(--color-neon-blue);
}

.float-icon:nth-child(1) { top: 10%; left: 5%; animation-delay: var(--delay); }
.float-icon:nth-child(2) { top: 20%; right: 10%; animation-delay: var(--delay); }
.float-icon:nth-child(3) { top: 50%; left: 10%; animation-delay: var(--delay); }
.float-icon:nth-child(4) { bottom: 20%; left: 20%; animation-delay: var(--delay); }
.float-icon:nth-child(5) { top: 40%; right: 15%; animation-delay: var(--delay); }
.float-icon:nth-child(6) { bottom: 10%; right: 5%; animation-delay: var(--delay); }

@keyframes floating {
    0%, 100% { transform: translateY(0px) translateX(0px); }
    25% { transform: translateY(-20px) translateX(10px); }
    50% { transform: translateY(-40px) translateX(-10px); }
    75% { transform: translateY(-20px) translateX(10px); }
}

/* ========== GENERAL SECTION STYLES ========== */
.section-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

main > section {
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-header h2 {
    font-family: 'Playfair Display', serif;
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-neon-cyan) 0%, var(--color-neon-purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-underline {
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, var(--color-neon-blue), var(--color-neon-purple));
    margin: 0 auto;
    border-radius: 2px;
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
}

/* ========== ABOUT SECTION ========== */
.about {
    background: linear-gradient(135deg, 
        rgba(15, 15, 30, 0.5) 0%, 
        rgba(26, 26, 46, 0.5) 100%);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.about-text p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
    font-size: 1.05rem;
}

.education h3,
.career-objective h3 {
    color: var(--color-neon-cyan);
    font-size: 1.5rem;
    margin: var(--spacing-lg) 0 var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.edu-item {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    transition: all var(--transition-base);
    overflow: hidden;
    position: relative;
}

.edu-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.1), transparent);
    transition: left 0.5s;
}

.edu-item:hover {
    border-color: var(--color-neon-blue);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.2);
    transform: translateY(-3px);
}

.edu-item:hover::before {
    left: 100%;
}

.edu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.edu-item h4 {
    color: var(--color-text-primary);
    font-size: 1.1rem;
}

.edu-date {
    color: var(--color-neon-blue);
    font-weight: 600;
    font-size: 0.9rem;
}

.edu-item p {
    color: var(--color-text-tertiary);
    margin: 0;
}

.career-objective p {
    color: var(--color-text-secondary);
    line-height: 1.8;
    background: var(--glass-bg);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--color-neon-purple);
}

/* About Stats */
.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.stat-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-neon-blue), var(--color-neon-purple));
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: -1;
}

.stat-card:hover {
    border-color: var(--color-neon-cyan);
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.2);
    transform: translateY(-5px);
}

.stat-card:hover::before {
    opacity: 0.1;
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-neon-cyan), var(--color-neon-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
}

.stat-label {
    color: var(--color-text-secondary);
    font-weight: 600;
    font-size: 0.95rem;
}

/* ========== SKILLS SECTION ========== */
.skills {
    background: linear-gradient(135deg,
        rgba(26, 26, 46, 0.5) 0%,
        rgba(15, 15, 30, 0.5) 100%);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-2xl);
}

.skill-category {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.skill-category::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--color-neon-blue), var(--color-neon-purple), transparent);
}

.skill-category:hover {
    border-color: var(--color-neon-blue);
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.15);
    transform: translateY(-5px);
}

.category-title {
    color: var(--color-neon-cyan);
    font-size: 1.3rem;
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.category-title i {
    font-size: 1.5rem;
}

.skill-item {
    margin-bottom: var(--spacing-lg);
}

.skill-name {
    display: block;
    color: var(--color-text-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    font-size: 0.95rem;
}

.skill-bar {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    height: 8px;
    border-radius: 10px;
    overflow: hidden;
    position: relative;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--color-neon-blue), var(--color-neon-cyan));
    border-radius: 10px;
    width: 0;
    animation: progressBar 1.5s ease-out forwards;
    box-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

@keyframes progressBar {
    from {
        width: 0;
    }
    to {
        /* width is set inline */
    }
}

.soft-skills {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.soft-skill-badge {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(179, 102, 255, 0.2));
    border: 1px solid var(--color-neon-blue);
    color: var(--color-text-primary);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition-base);
}

.soft-skill-badge:hover {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.3), rgba(179, 102, 255, 0.3));
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.3);
    transform: scale(1.05);
}

/* ========== PROJECTS SECTION ========== */
.projects {
    background: linear-gradient(135deg,
        rgba(22, 33, 62, 0.5) 0%,
        rgba(26, 26, 46, 0.5) 100%);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-2xl);
}

.project-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    position: relative;
    group: hover-group;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-neon-blue), var(--color-neon-purple));
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: -1;
}

.project-card:hover {
    border-color: var(--color-neon-cyan);
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 212, 255, 0.2);
}

.project-card:hover::before {
    opacity: 0.05;
}

.project-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, 
        rgba(0, 212, 255, 0.1) 0%, 
        rgba(179, 102, 255, 0.1) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.project-placeholder {
    font-size: 4rem;
    color: var(--color-neon-blue);
    opacity: 0.5;
}

.project-image::before {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, 
        transparent 30%, 
        rgba(0, 212, 255, 0.1) 50%, 
        transparent 70%);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

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

.project-title {
    color: var(--color-text-primary);
    font-size: 1.3rem;
    margin-bottom: var(--spacing-md);
    font-weight: 700;
}

.project-description {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.project-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.feature-tag {
    background: rgba(0, 212, 255, 0.15);
    color: var(--color-neon-cyan);
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
}

.tech-tag {
    background: rgba(179, 102, 255, 0.2);
    color: var(--color-neon-purple);
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 600;
}

.project-links {
    display: flex;
    gap: var(--spacing-md);
}

.project-btn {
    flex: 1;
    padding: 0.6rem 1rem;
    background: linear-gradient(135deg, var(--color-neon-blue), var(--color-neon-cyan));
    color: var(--color-bg-primary);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    font-weight: 600;
    font-size: 0.9rem;
    transition: all var(--transition-base);
}

.project-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 212, 255, 0.3);
}

/* ========== EXPERIENCE SECTION ========== */
.experience {
    background: linear-gradient(135deg,
        rgba(15, 15, 30, 0.5) 0%,
        rgba(22, 33, 62, 0.5) 100%);
}

.experience-timeline {
    max-width: 800px;
    margin: 0 auto;
}

.timeline-item {
    display: flex;
    gap: var(--spacing-2xl);
    position: relative;
    margin-bottom: var(--spacing-2xl);
}

.timeline-marker {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--color-neon-blue), var(--color-neon-purple));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    position: relative;
    z-index: 2;
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.4);
}

.timeline-marker::after {
    content: '';
    position: absolute;
    width: 4px;
    height: 200px;
    background: linear-gradient(180deg, var(--color-neon-blue), transparent);
    left: 50%;
    transform: translateX(-50%);
    top: 100%;
}

.timeline-content {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    flex: 1;
    transition: all var(--transition-base);
    position: relative;
}

.timeline-content::before {
    content: '';
    position: absolute;
    top: 20px;
    left: -20px;
    width: 20px;
    height: 20px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    clip-path: polygon(0 0, 100% 50%, 0 100%);
}

.timeline-content:hover {
    border-color: var(--color-neon-cyan);
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.2);
    transform: translateX(10px);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.timeline-header h3 {
    color: var(--color-text-primary);
    font-size: 1.3rem;
}

.timeline-date {
    color: var(--color-neon-blue);
    font-weight: 600;
    font-size: 0.9rem;
}

.timeline-company {
    color: var(--color-neon-cyan);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.timeline-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.timeline-tasks ul {
    list-style: none;
    color: var(--color-text-secondary);
}

.timeline-tasks li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.timeline-tasks li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--color-neon-blue);
    font-weight: bold;
}

/* ========== CERTIFICATES SECTION ========== */
.certificates {
    background: linear-gradient(135deg,
        rgba(26, 26, 46, 0.5) 0%,
        rgba(15, 15, 30, 0.5) 100%);
}

.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.certificate-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.certificate-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-neon-blue), var(--color-neon-purple), var(--color-neon-cyan));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.certificate-card:hover::before {
    transform: scaleX(1);
}

.certificate-card:hover {
    border-color: var(--color-neon-cyan);
    box-shadow: 0 10px 40px rgba(0, 212, 255, 0.2);
    transform: translateY(-8px);
}

.certificate-icon {
    font-size: 3.5rem;
    color: var(--color-neon-blue);
    margin-bottom: var(--spacing-md);
    filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.3));
}

.certificate-card h3 {
    color: var(--color-text-primary);
    font-size: 1.2rem;
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

.certificate-card p {
    color: var(--color-text-tertiary);
    font-size: 0.95rem;
}

/* ========== ACHIEVEMENTS SECTION ========== */
.achievements {
    background: linear-gradient(135deg,
        rgba(22, 33, 62, 0.5) 0%,
        rgba(26, 26, 46, 0.5) 100%);
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.achievement-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    border: 2px solid var(--glass-border);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.achievement-card::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.achievement-card:hover {
    border-color: var(--color-neon-cyan);
    box-shadow: inset 0 0 30px rgba(0, 212, 255, 0.1), 0 0 30px rgba(0, 212, 255, 0.2);
    transform: scale(1.05);
}

.achievement-card:hover::after {
    opacity: 1;
}

.achievement-icon {
    font-size: 4rem;
    color: var(--color-neon-purple);
    margin-bottom: var(--spacing-md);
    filter: drop-shadow(0 0 15px rgba(179, 102, 255, 0.4));
    animation: pulse 2s ease-in-out infinite;
}

.achievement-card:hover .achievement-icon {
    animation: bounce 0.6s ease-in-out;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.achievement-card h3 {
    color: var(--color-text-primary);
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

.achievement-card p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.achievement-year {
    display: inline-block;
    background: linear-gradient(135deg, var(--color-neon-blue), var(--color-neon-purple));
    color: var(--color-bg-primary);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
}

/* ========== CONTACT SECTION ========== */
.contact {
    background: linear-gradient(135deg,
        rgba(15, 15, 30, 0.5) 0%,
        rgba(22, 33, 62, 0.5) 100%);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.contact-item {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.contact-item:hover {
    border-color: var(--color-neon-blue);
    box-shadow: 0 0 25px rgba(0, 212, 255, 0.2);
    transform: translateX(10px);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--color-neon-blue), var(--color-neon-purple));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--color-bg-primary);
    flex-shrink: 0;
}

.contact-detail h4 {
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
}

.contact-detail a {
    color: var(--color-neon-cyan);
    text-decoration: none;
    transition: all var(--transition-base);
    word-break: break-word;
}

.contact-detail a:hover {
    color: var(--color-neon-blue);
    text-decoration: underline;
}

/* Contact Form */
.contact-form {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.contact-form input,
.contact-form textarea {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-family: 'Poppins', sans-serif;
    font-size: 1rem;
    transition: all var(--transition-base);
    resize: none;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: var(--color-text-tertiary);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--color-neon-blue);
    background: rgba(0, 212, 255, 0.05);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.2);
}

.form-error {
    color: #ff006e;
    font-size: 0.85rem;
    margin-top: 0.25rem;
    display: none;
}

.form-error.show {
    display: block;
}

/* ========== FOOTER ========== */
.footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--glass-border);
    padding: var(--spacing-xl) var(--spacing-lg);
    position: relative;
    overflow: hidden;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    text-align: center;
    color: var(--color-text-secondary);
    position: relative;
    z-index: 1;
}

.footer-content p {
    margin: 0.5rem 0;
    font-size: 0.95rem;
}

.footer-content i {
    color: #ff006e;
    animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--color-neon-blue), var(--color-neon-purple));
    color: var(--color-bg-primary);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    transition: all var(--transition-base);
    z-index: var(--z-fixed);
    box-shadow: 0 5px 20px rgba(0, 212, 255, 0.3);
}

.back-to-top.show {
    display: flex;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.4);
}

/* ========== RESPONSIVE DESIGN ========== */
@media (max-width: 1024px) {
    .section-header h2 {
        font-size: 2.5rem;
    }
    
    .hero-title {
        font-size: 3.5rem;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .nav-menu.active {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        flex-direction: column;
        gap: 0;
        background: var(--glass-bg);
        backdrop-filter: blur(var(--glass-blur));
        border-bottom: 1px solid var(--glass-border);
        padding: var(--spacing-lg) 0;
        display: flex;
    }
    
    .nav-item {
        width: 100%;
        padding: var(--spacing-md) var(--spacing-lg);
    }
    
    .nav-link::after {
        display: none;
    }
    
    .hero {
        min-height: 90vh;
        padding: 80px var(--spacing-md) var(--spacing-xl);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-tagline {
        font-size: 1.2rem;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    main > section {
        padding: 60px 0;
    }
    
    .skills-grid,
    .projects-grid,
    .certificates-grid {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .project-links {
        flex-direction: column;
    }
    
    .project-btn {
        width: 100%;
    }
    
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-xl: 2rem;
        --spacing-2xl: 2.5rem;
    }
    
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-tagline {
        font-size: 1rem;
    }
    
    .hero-intro {
        font-size: 0.95rem;
    }
    
    .section-header h2 {
        font-size: 1.5rem;
    }
    
    .social-icons {
        gap: 1rem;
    }
    
    .social-icon {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .cta-buttons {
        gap: var(--spacing-sm);
    }
    
    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .floating-icons {
        display: none;
    }
    
    .stat-card {
        padding: var(--spacing-md);
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .achievements-grid,
    .certificates-grid {
        grid-template-columns: 1fr;
    }
}

/* ========== UTILITY CLASSES ========== */
.hidden {
    display: none !important;
}

.scroll-hide {
    opacity: 0;
    transform: translateY(30px);
    transition: all var(--transition-slow);
}

.scroll-show {
    opacity: 1;
    transform: translateY(0);
}