:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #06b6d4;
    --text-color: #ffffff;
    --text-secondary: #e2e8f0;
    --bg-color: #0a0a0a;
    --bg-secondary: #111827;
    --bg-tertiary: #1f2937;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --nav-height: 80px;
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-secondary: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
    --gradient-accent: linear-gradient(135deg, #06b6d4 0%, #0ea5e9 100%);
    --gradient-dark: linear-gradient(135deg, #111827 0%, #1f2937 100%);
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 30px rgba(6, 182, 212, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
    transition: opacity 0.5s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Enhanced Navbar - FIXED POSITION */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    background: rgba(10, 10, 10, 0.98);
    backdrop-filter: blur(20px);
    z-index: 1000;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.navbar.scrolled {
    background: rgba(10, 10, 10, 1);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    z-index: 2;
}

.nav-logo:hover {
    transform: translateY(-3px) scale(1.02);
}

.logo-icon {
    position: relative;
    width: 55px;
    height: 55px;
    background: var(--gradient-primary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 2px solid rgba(6, 182, 212, 0.3);
}

.logo-icon:hover {
    transform: rotate(8deg) scale(1.1);
    box-shadow: var(--shadow-glow);
    border-color: var(--accent-color);
}

.logo-initial {
    font-size: 1.6rem;
    font-weight: 800;
    color: white;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

.logo-pulse {
    position: absolute;
    top: -4px;
    left: -4px;
    right: -4px;
    bottom: -4px;
    border-radius: 20px;
    background: var(--gradient-primary);
    opacity: 0.4;
    animation: logoPulse 3s infinite;
}

@keyframes logoPulse {
    0%, 100% { transform: scale(1); opacity: 0.4; }
    50% { transform: scale(1.15); opacity: 0.1; }
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-name {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--text-color);
    line-height: 1.2;
    background: linear-gradient(135deg, var(--text-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-subtitle {
    font-size: 0.9rem;
    color: var(--accent-color);
    font-weight: 600;
    opacity: 0.8;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    position: relative;
    z-index: 2;
}

.nav-link {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.25rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 8px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-color);
    background: rgba(6, 182, 212, 0.1);
}

.nav-link i {
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.nav-link:hover i {
    transform: scale(1.1);
    color: var(--accent-color);
}

.nav-link span {
    font-weight: 600;
    letter-spacing: 0.5px;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.nav-toggle:hover {
    background: rgba(96, 165, 250, 0.1);
}

.hamburger-line {
    width: 25px;
    height: 3px;
    background: var(--text-color);
    border-radius: 2px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-toggle.active .hamburger-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
    transform: translateX(-20px);
}

.nav-toggle.active .hamburger-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Hero Section - ENHANCED DARK OVERLAY */
.home {
    height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0;
    transition: opacity 2s ease-in-out;
    transform: scale(1.1);
    animation: heroZoom 20s infinite linear;
}

.hero-slide.active {
    opacity: 1;
}

@keyframes heroZoom {
    0% { transform: scale(1.1); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1.1); }
}

/* MUCH DARKER HERO OVERLAY FOR BETTER TEXT VISIBILITY */
.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.85) 0%, rgba(10, 10, 10, 0.9) 50%, rgba(0, 0, 0, 0.95) 100%);
    z-index: -1;
}

.floating-cv {
    position: fixed;
    top: 50%;
    right: 2rem;
    transform: translateY(-50%);
    z-index: 999;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.cv-icon {
    position: relative;
    width: 60px;
    height: 60px;
    background: var(--gradient-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.cv-icon:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-xl);
}

.cv-icon i {
    font-size: 1.5rem;
    color: white;
}

.cv-pulse {
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    border-radius: 50%;
    background: var(--gradient-secondary);
    opacity: 0.6;
    animation: cvPulse 2s infinite;
}

@keyframes cvPulse {
    0%, 100% { transform: scale(1); opacity: 0.6; }
    50% { transform: scale(1.2); opacity: 0.3; }
}

.cv-tooltip {
    position: absolute;
    right: 70px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--bg-secondary);
    color: var(--text-color);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.875rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
}

.cv-tooltip::after {
    content: '';
    position: absolute;
    left: 100%;
    top: 50%;
    transform: translateY(-50%);
    border: 6px solid transparent;
    border-left-color: var(--bg-secondary);
}

.floating-cv:hover .cv-tooltip {
    opacity: 1;
}

.cv-expanded {
    position: absolute;
    right: 70px;
    top: 50%;
    transform: translateY(-50%) scale(0.8);
    background: rgba(30, 41, 59, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    padding: 1.5rem;
    min-width: 200px;
    opacity: 0;
    pointer-events: none;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(96, 165, 250, 0.2);
}

.floating-cv.expanded .cv-expanded {
    opacity: 1;
    pointer-events: all;
    transform: translateY(-50%) scale(1);
}

.floating-cv.expanded .cv-tooltip {
    opacity: 0;
}

.cv-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid rgba(96, 165, 250, 0.2);
}

.cv-header i {
    font-size: 1.25rem;
    color: var(--accent-color);
}

.cv-header span {
    font-weight: 600;
    color: var(--text-color);
}

.cv-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.cv-action {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: rgba(96, 165, 250, 0.1);
    border: 1px solid rgba(96, 165, 250, 0.2);
    border-radius: 10px;
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.875rem;
    transition: all 0.3s ease;
}

.cv-action:hover {
    background: rgba(96, 165, 250, 0.2);
    border-color: var(--accent-color);
    transform: translateX(5px);
}

.cv-action.view {
    background: rgba(16, 185, 129, 0.1);
    border-color: rgba(16, 185, 129, 0.2);
}

.cv-action.view:hover {
    background: rgba(16, 185, 129, 0.2);
    border-color: var(--success-color);
}

.cv-action.download {
    background: rgba(59, 130, 246, 0.1);
    border-color: rgba(59, 130, 246, 0.2);
}

.cv-action.download:hover {
    background: rgba(59, 130, 246, 0.2);
    border-color: #3b82f6;
}

.hero-content {
    text-align: center;
    z-index: 1;
    max-width: 800px;
    padding: 0 2rem;
}

.glitch-container {
    margin-bottom: 3rem;
}

.glitch-text {
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 800;
    color: var(--text-color);
    margin-bottom: 1rem;
    position: relative;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
    animation: glitchFloat 6s ease-in-out infinite;
}

.glitch-text::before,
.glitch-text::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
}

.glitch-text::before {
    color: #ff0080;
    animation: glitch1 2s infinite;
}

.glitch-text::after {
    color: #00ffff;
    animation: glitch2 2s infinite;
}

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

@keyframes glitch1 {
    0%, 90%, 100% { opacity: 0; }
    95% { opacity: 0.1; transform: translate(-2px, -2px); }
}

@keyframes glitch2 {
    0%, 90%, 100% { opacity: 0; }
    95% { opacity: 0.1; transform: translate(2px, 2px); }
}

.typed {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    color: var(--accent-color);
    font-weight: 600;
    min-height: 3rem;
    display: block;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.8);
}

/* COMPLETELY REDESIGNED HERO STATS FOR MOBILE */
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
    padding: 0 1rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: rgba(96, 165, 250, 0.15);
    border-radius: 16px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(96, 165, 250, 0.3);
    transition: all 0.3s ease;
    min-width: 150px;
    flex: 1;
    max-width: 200px;
}

.stat-item:hover {
    transform: translateY(-5px);
    background: rgba(96, 165, 250, 0.2);
    box-shadow: var(--shadow-lg);
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.8);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.8);
}

/* PERFECTLY CENTERED SCROLL INDICATOR */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 1;
}

.scroll-indicator:hover {
    transform: translateX(-50%) translateY(-5px);
}

.scroll-icon {
    width: 50px;
    height: 50px;
    border: 2px solid var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(96, 165, 250, 0.1);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.scroll-icon:hover {
    background: rgba(96, 165, 250, 0.2);
    transform: scale(1.1);
}

.scroll-icon i {
    color: var(--accent-color);
    font-size: 1.2rem;
    animation: bounceArrow 2s infinite;
}

.scroll-indicator p {
    font-size: 0.9rem;
    color: var(--accent-color);
    font-weight: 500;
    letter-spacing: 1px;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.8);
}

@keyframes bounceArrow {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-8px); }
    60% { transform: translateY(-4px); }
}

/* Section Backgrounds */
.section-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-attachment: scroll;
    z-index: -2;
}

.section-bg::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 10, 10, 0.92);
    z-index: 1;
}

.about .section-bg {
    background-image: url('https://images.pexels.com/photos/270348/pexels-photo-270348.jpeg?auto=compress&cs=tinysrgb&w=1920');
}

.skills .section-bg {
    background-image: url('https://images.pexels.com/photos/1181677/pexels-photo-1181677.jpeg?auto=compress&cs=tinysrgb&w=1920');
}

.projects .section-bg {
    background-image: url('https://images.pexels.com/photos/574071/pexels-photo-574071.jpeg?auto=compress&cs=tinysrgb&w=1920');
}

.experience .section-bg {
    background-image: url('https://images.pexels.com/photos/546819/pexels-photo-546819.jpeg?auto=compress&cs=tinysrgb&w=1920');
}

.contact .section-bg {
    background-image: url('https://images.pexels.com/photos/1181263/pexels-photo-1181263.jpeg?auto=compress&cs=tinysrgb&w=1920');
}

/* Common Section Styles */
section {
    position: relative;
    padding: 100px 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

section.hide {
    opacity: 0;
    transform: translateY(-30px);
}

.section-title {
    font-size: clamp(3rem, 7vw, 5rem);
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-align: center;
    margin-bottom: 4rem;
    position: relative;
    z-index: 1;
    text-shadow: 0 4px 20px rgba(6, 182, 212, 0.3);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 6px;
    background: var(--gradient-secondary);
    border-radius: 2px;
    box-shadow: 0 0 20px rgba(6, 182, 212, 0.5);
}

/* About Section - ENHANCED IMAGE OVERLAY */
.about-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.img-frame {
    position: relative;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-xl);
}

.img-frame::before {
    content: '';
    position: absolute;
    top: -3px;
    left: -3px;
    right: -3px;
    bottom: -3px;
    background: linear-gradient(45deg, var(--accent-color), var(--primary-color));
    border-radius: 50%;
    z-index: -1;
    opacity: 0.8;
}

.img-frame:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 40px rgba(96, 165, 250, 0.3);
}

.img-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    transition: all 0.5s ease;
}

/* ENHANCED IMAGE OVERLAY */
.img-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(96, 165, 250, 0.15);
    opacity: 0;
    transition: all 0.3s ease;
    border-radius: 50%;
}

.img-frame:hover .img-overlay {
    opacity: 0.8;
}


.about-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.education, .certifications {
    margin-top: 2rem;
}

.education h3, .certifications h3 {
    color: var(--accent-color);
    margin-bottom: 1rem;
    font-size: 1.5rem;
    font-weight: 600;
}

.edu-item {
    padding: 1.5rem;
    background: rgba(96, 165, 250, 0.1);
    border-radius: 12px;
    border-left: 4px solid var(--accent-color);
    transition: all 0.4s ease;
    backdrop-filter: blur(10px);
}

.edu-item:hover {
    transform: translateX(15px);
    background: rgba(96, 165, 250, 0.15);
    box-shadow: var(--shadow-lg);
}

.edu-item h4 {
    color: var(--text-color);
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.graduation {
    color: var(--accent-color);
    font-size: 0.9rem;
    font-style: italic;
    font-weight: 500;
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.cert-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: rgba(96, 165, 250, 0.1);
    border-radius: 10px;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(96, 165, 250, 0.2);
}

.cert-item:hover {
    background: rgba(96, 165, 250, 0.2);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.cert-item i {
    color: #ff9900;
    font-size: 1.5rem;
}

/* COMPLETELY REDESIGNED SKILLS SECTION */
.skills-container {
    position: relative;
    z-index: 1;
}

.skill-category {
    margin-bottom: 4rem;
}

.skill-category h3 {
    color: var(--accent-color);
    margin-bottom: 2rem;
    font-size: 2rem;
    text-align: center;
    font-weight: 600;
}

/* FIXED SKILLS GRID - PROPER HORIZONTAL LAYOUT */
.skill-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.skill-item {
    background: rgba(6, 182, 212, 0.1);
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    backdrop-filter: blur(20px);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    position: relative;
    overflow: hidden;
    border: 2px solid rgba(6, 182, 212, 0.2);
    opacity: 0;
    transform: translateY(30px);
    min-height: 150px;
    justify-content: center;
}

.skill-item.animate {
    opacity: 1;
    transform: translateY(0);
}

.skill-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent, rgba(6, 182, 212, 0.2), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.skill-item:hover::before {
    transform: translateX(100%);
}

.skill-item:hover {
    transform: translateY(-20px) scale(1.08) rotateY(5deg);
    background: rgba(6, 182, 212, 0.25);
    box-shadow: var(--shadow-glow);
    border-color: var(--accent-color);
}

.skill-item i {
    font-size: 3rem;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.skill-item:hover i {
    transform: scale(1.2) rotate(5deg);
}

.skill-item span {
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.3s ease;
    color: var(--text-color);
}

.skill-item:hover span {
    color: var(--accent-color);
}

/* Projects Section */
.projects {
    position: relative;
    padding: 120px 0;
}

.projects-section {
    margin-bottom: 5rem;
}

.projects-subtitle {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-color);
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

.projects-subtitle::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: var(--gradient-accent);
    border-radius: 2px;
}

.non-academic-projects {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.project-card.featured {
    background: rgba(96, 165, 250, 0.15);
    border: 2px solid rgba(96, 165, 250, 0.3);
    position: relative;
    overflow: hidden;
}

.project-card.featured::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-accent);
}

.project-header {
    position: relative;
    overflow: hidden;
}

.project-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--gradient-accent);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    z-index: 2;
}

.project-links {
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(96, 165, 250, 0.2);
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    background: rgba(96, 165, 250, 0.1);
}

.project-link:hover {
    background: rgba(96, 165, 250, 0.2);
    transform: translateX(5px);
}

.project-filters {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.filter-btn {
    background: rgba(96, 165, 250, 0.1);
    border: 1px solid rgba(96, 165, 250, 0.3);
    color: var(--text-color);
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 500;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.filter-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(96, 165, 250, 0.2), transparent);
    transition: left 0.5s ease;
}

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

.filter-btn.active,
.filter-btn:hover {
    background: var(--gradient-accent);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
    color: white;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    position: relative;
    z-index: 1;
}

.project-card {
    background: rgba(6, 182, 212, 0.1);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(20px);
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s forwards;
    border: 2px solid rgba(6, 182, 212, 0.2);
    position: relative;
}

.project-card:hover {
    transform: translateY(-20px) scale(1.05) rotateX(2deg);
    box-shadow: var(--shadow-glow);
    border-color: var(--accent-color);
}

.project-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.project-card:hover img {
    transform: scale(1.1);
}

.project-info {
    padding: 1.5rem;
}

.project-info h3 {
    color: var(--accent-color);
    margin-bottom: 0.5rem;
    font-size: 1.3rem;
    font-weight: 600;
}

.tech-stack {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    font-weight: 500;
}

.description {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.project-features {
    list-style: none;
}

.project-features li {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
    position: relative;
    padding-left: 1rem;
}

.project-features li::before {
    content: '•';
    color: var(--accent-color);
    position: absolute;
    left: 0;
    font-weight: bold;
}

/* Experience Section */
.experience {
    position: relative;
    padding: 120px 0;
}

.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    height: var(--timeline-progress, 0%);
    width: 2px;
    background: var(--gradient-accent);
    transform: translateX(-50%);
    transition: height 0.3s ease-out;
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    width: 50%;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.timeline-item.animate {
    opacity: 1;
    transform: translateY(0);
}

.timeline-item:nth-child(odd) {
    left: 0;
    padding-right: 2rem;
}

.timeline-item:nth-child(even) {
    left: 50%;
    padding-left: 2rem;
}

.timeline-dot {
    position: absolute;
    width: 16px;
    height: 16px;
    background: var(--accent-color);
    border-radius: 50%;
    top: 0;
    box-shadow: 0 0 0 rgba(96, 165, 250, 0.5);
    border: 3px solid var(--bg-color);
    transition: all 0.3s ease;
    opacity: 0;
    transform: scale(0);
}

.timeline-item.animate .timeline-dot {
    opacity: 1;
    transform: scale(1);
    box-shadow: 0 0 20px rgba(96, 165, 250, 0.5);
}

.timeline-item:nth-child(odd) .timeline-dot {
    right: -8px;
}

.timeline-item:nth-child(even) .timeline-dot {
    left: -8px;
}

.timeline-content {
    background: rgba(6, 182, 212, 0.15);
    padding: 2rem;
    border-radius: 20px;
    transition: all 0.4s ease;
    border-left: 4px solid var(--accent-color);
    backdrop-filter: blur(20px);
    border: 2px solid rgba(6, 182, 212, 0.3);
    position: relative;
    overflow: hidden;
}

.timeline-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent, rgba(6, 182, 212, 0.1), transparent);
    transform: translateX(-100%);
    transition: transform 0.8s ease;
}

.timeline-content:hover::before {
    transform: translateX(100%);
}

.timeline-content:hover {
    background: rgba(6, 182, 212, 0.25);
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-glow);
    border-color: var(--accent-color);
}

.timeline-content h3 {
    color: var(--accent-color);
    margin-bottom: 0.5rem;
    font-size: 1.3rem;
    font-weight: 600;
}

.timeline-content h4 {
    color: var(--text-color);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.timeline-content h5 {
    color: var(--accent-color);
    margin-bottom: 0.5rem;
    font-weight: 400;
    font-size: 0.95rem;
    font-style: italic;
}

.timeline-date {
    color: var(--accent-color);
    font-size: 0.9rem;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 1rem;
    padding: 0.25rem 0.75rem;
    background: rgba(96, 165, 250, 0.2);
    border-radius: 20px;
}

/* Enhanced Contact Section */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    position: relative;
    z-index: 1;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem;
    background: rgba(96, 165, 250, 0.1);
    border-radius: 16px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(96, 165, 250, 0.2);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    position: relative;
    overflow: hidden;
}

.contact-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent, rgba(96, 165, 250, 0.1), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.contact-item:hover::before {
    transform: translateX(100%);
}

.contact-item:hover {
    background: rgba(96, 165, 250, 0.2);
    transform: translateY(-5px) scale(1.02);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-accent);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.4s ease;
    flex-shrink: 0;
}

.contact-icon i {
    font-size: 1.25rem;
    color: white;
    transition: all 0.4s ease;
}

.contact-item:hover .contact-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: var(--shadow-md);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    flex: 1;
    overflow: hidden;
}

.contact-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
    transition: all 0.3s ease;
    opacity: 1;
    transform: translateY(0);
}

.contact-value {
    font-size: 1rem;
    color: var(--text-color);
    font-weight: 600;
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(10px);
}

.contact-item:hover .contact-label {
    opacity: 0;
    transform: translateY(-10px);
}

.contact-item:hover .contact-value {
    opacity: 1;
    transform: translateY(0);
}

/* Contact Form */
.contact-form-section {
    background: rgba(96, 165, 250, 0.1);
    padding: 2rem;
    border-radius: 20px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(96, 165, 250, 0.2);
}

.form-header {
    text-align: center;
    margin-bottom: 2rem;
}

.form-header h3 {
    color: var(--accent-color);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.form-header p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-group {
    position: relative;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem 0 0.5rem 0;
    background: transparent;
    border: none;
    border-bottom: 2px solid rgba(96, 165, 250, 0.3);
    color: var(--text-color);
    font-size: 1rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    outline: none;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    border-bottom-color: var(--accent-color);
}

.form-group label {
    position: absolute;
    top: 1rem;
    left: 0;
    color: var(--text-secondary);
    font-size: 1rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

.form-group input:focus + label,
.form-group textarea:focus + label,
.form-group input:valid + label,
.form-group textarea:valid + label {
    top: 0;
    font-size: 0.875rem;
    color: var(--accent-color);
}

.form-line {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-accent);
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.form-group input:focus ~ .form-line,
.form-group textarea:focus ~ .form-line {
    width: 100%;
}

.submit-btn {
    background: var(--gradient-accent);
    border: none;
    color: white;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-top: 1rem;
}

.btn-ripple {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.submit-btn:hover .btn-ripple {
    transform: translateX(100%);
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.btn-icon {
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.submit-btn:hover .btn-icon {
    transform: translateX(5px);
}

/* Form Success */
.form-success {
    display: none;
    text-align: center;
    padding: 2rem;
    background: rgba(16, 185, 129, 0.1);
    border-radius: 20px;
    border: 2px solid var(--success-color);
    backdrop-filter: blur(10px);
}

.form-success.show {
    display: block;
    animation: successSlideIn 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.success-animation i {
    font-size: 4rem;
    color: var(--success-color);
    animation: successPulse 1.5s ease-in-out;
    margin-bottom: 1rem;
}

.form-success h3 {
    color: var(--success-color);
    margin-bottom: 0.5rem;
    font-size: 1.5rem;
    font-weight: 600;
}

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

@keyframes successSlideIn {
    0% {
        opacity: 0;
        transform: translateY(30px) scale(0.9);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

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

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 55px;
    height: 55px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
    color: white;
    text-decoration: none;
}

.back-to-top-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-accent);
    border-radius: 50%;
    box-shadow: var(--shadow-lg);
    transition: all 0.4s ease;
}

.back-to-top.visible {
    opacity: 1;
}

.back-to-top:hover {
    transform: translateY(-8px) scale(1.1);
}

.back-to-top:hover .back-to-top-bg {
    box-shadow: var(--shadow-xl);
}

.back-to-top i {
    position: relative;
    z-index: 1;
    transition: transform 0.3s ease;
}

.back-to-top:hover i {
    transform: translateY(-2px);
}

/* Footer */
.footer {
    background: linear-gradient(135deg, var(--bg-color) 0%, var(--bg-secondary) 100%);
    border-top: 1px solid rgba(96, 165, 250, 0.1);
    padding: 3rem 0 1rem;
    position: relative;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-left {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.footer-logo .logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.footer-logo .logo-initial {
    font-size: 1.2rem;
    font-weight: 700;
    color: white;
}

.footer-logo .logo-text {
    display: flex;
    flex-direction: column;
}

.footer-logo .logo-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
}

.footer-logo .logo-subtitle {
    font-size: 0.8rem;
    color: var(--accent-color);
    font-weight: 400;
}

.footer-description {
    color: var(--text-secondary);
    line-height: 1.6;
    max-width: 300px;
}

.footer-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.footer-section h4 {
    color: var(--accent-color);
    margin-bottom: 1rem;
    font-size: 1.1rem;
    font-weight: 600;
}

.footer-section ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-section ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 0.95rem;
}

.footer-section ul li a:hover {
    color: var(--accent-color);
    transform: translateX(5px);
}

.footer-bottom {
    margin-top: 2rem;
}

.footer-divider {
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(96, 165, 250, 0.3), transparent);
    margin-bottom: 1.5rem;
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-bottom-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-bottom-content i {
    color: #ef4444;
    margin: 0 0.25rem;
}

/* Enhanced Scroll Effects */
.parallax-element {
    transition: transform 0.1s ease-out;
}

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

/* COMPLETELY REDESIGNED MOBILE RESPONSIVE */
@media (max-width: 768px) {
    .nav-container {
        padding: 0 1rem;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: var(--nav-height);
        right: -100%;
        width: 280px;
        height: calc(100vh - var(--nav-height));
        background: rgba(15, 23, 42, 0.98);
        flex-direction: column;
        padding: 2rem 1rem;
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        backdrop-filter: blur(20px);
        gap: 1rem;
        border-left: 1px solid rgba(96, 165, 250, 0.2);
    }

    .nav-links.active {
        right: 0;
        box-shadow: var(--shadow-xl);
    }

    .nav-link {
        padding: 1.25rem;
        width: 100%;
        justify-content: flex-start;
        border-radius: 12px;
    }

    .floating-cv {
        right: 1rem;
        top: 40%;
    }

    .cv-expanded {
        right: 70px;
        min-width: 180px;
    }

    /* COMPLETELY FIXED MOBILE HERO STATS */
    .hero-stats {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
        margin-bottom: 2rem;
        padding: 0 1rem;
        width: 100%;
    }

    .stat-item {
        width: 100%;
        max-width: 280px;
        min-width: auto;
        padding: 1.25rem;
        flex: none;
    }

    /* PERFECTLY CENTERED SCROLL INDICATOR FOR MOBILE */
    .scroll-indicator {
        bottom: 1.5rem;
        left: 50%;
        transform: translateX(-50%);
        position: absolute;
        width: auto;
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .img-frame {
        width: 250px;
        height: 250px;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    /* MOBILE SKILLS GRID - PROPER 2 COLUMN LAYOUT */
    .skill-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
        padding: 0 1rem;
    }

    .skill-item {
        padding: 1.5rem;
        min-height: 120px;
    }

    .skill-item i {
        font-size: 2.5rem;
    }

    .projects-grid {
        grid-template-columns: 1fr;
        padding: 0 1rem;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        width: 100%;
        left: 0 !important;
        padding-left: 3rem !important;
        padding-right: 0 !important;
    }

    .timeline-dot {
        left: 12px !important;
        right: auto !important;
    }

    .cert-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .floating-cv {
        right: 0.5rem;
        top: 35%;
    }

    .cv-icon {
        width: 50px;
        height: 50px;
    }

    .cv-icon i {
        font-size: 1.25rem;
    }

    .cv-expanded {
        right: 60px;
        min-width: 160px;
        padding: 1rem;
    }

    /* EXTRA SMALL MOBILE HERO STATS */
    .hero-stats {
        flex-direction: column;
        align-items: center;
        gap: 0.75rem;
        margin-bottom: 1.5rem;
        padding: 0 0.5rem;
    }

    .stat-item {
        width: 100%;
        max-width: 250px;
        padding: 1rem;
    }

    .stat-number {
        font-size: 1.75rem;
    }

    .stat-label {
        font-size: 0.8rem;
    }

    /* SCROLL INDICATOR FOR VERY SMALL SCREENS */
    .scroll-indicator {
        bottom: 1rem;
        left: 50%;
        transform: translateX(-50%);
    }

    .project-filters {
        gap: 0.5rem;
        padding: 0 0.5rem;
    }

    .filter-btn {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }

    .back-to-top {
        width: 50px;
        height: 50px;
        bottom: 1rem;
        right: 1rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }

    .contact-item {
        padding: 1rem;
    }

    .contact-icon {
        width: 40px;
        height: 40px;
    }

    .contact-icon i {
        font-size: 1rem;
    }

    /* VERY SMALL MOBILE SKILLS GRID */
    .skill-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
        padding: 0 0.5rem;
    }

    .skill-item {
        padding: 1.25rem;
        min-height: 100px;
    }

    .skill-item i {
        font-size: 2rem;
    }

    .skill-item span {
        font-size: 0.9rem;
    }
    
    .non-academic-projects {
        grid-template-columns: 1fr;
    }
}

/* Landscape orientation */
@media (max-height: 500px) and (orientation: landscape) {
    .home {
        padding: 2rem 0;
    }

    .hero-content {
        margin-bottom: 2rem;
    }

    .scroll-indicator {
        bottom: 1rem;
        left: 50%;
        transform: translateX(-50%);
    }

    .navbar {
        height: 60px;
        --nav-height: 60px;
    }

    .floating-cv {
        top: 30%;
    }

    .hero-stats {
        flex-direction: row;
        gap: 1rem;
        margin-bottom: 1rem;
    }

    .stat-item {
        min-width: 120px;
        max-width: 150px;
        padding: 1rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

/* High DPI displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .section-bg {
        background-image: url('https://images.pexels.com/photos/1181677/pexels-photo-1181677.jpeg?auto=compress&cs=tinysrgb&w=2560');
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .hero-slide {
        animation: none;
    }
    
    .glitch-text::before,
    .glitch-text::after {
        animation: none;
    }
}

/* Print styles */
@media print {
    .navbar,
    .floating-cv,
    .back-to-top,
    .scroll-indicator {
        display: none !important;
    }
    
    section {
        page-break-inside: avoid;
        padding: 1rem 0;
    }
    
    .section-bg {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
}