@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
   --primary-color: #6366f1;
   --secondary-color: #8b5cf6;
   --accent-color: #ec4899;
   --success-color: #10b981;
   --warning-color: #f59e0b;
   --error-color: #ef4444;
   
   --bg-primary: #0f172a;
   --bg-secondary: #1e293b;
   --bg-tertiary: #334155;
   --bg-glass: rgba(15, 23, 42, 0.8);
   
   --text-primary: #f8fafc;
   --text-secondary: #cbd5e1;
   --text-muted: #94a3b8;
   
   --border-primary: rgba(99, 102, 241, 0.3);
   --border-secondary: rgba(203, 213, 225, 0.1);
   
   --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
   --gradient-secondary: linear-gradient(135deg, #ec4899 0%, #f97316 100%);
   --gradient-background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
   
   --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
   --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
   --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
   --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
   --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
   
   --border-radius-sm: 0.375rem;
   --border-radius-md: 0.5rem;
   --border-radius-lg: 0.75rem;
   --border-radius-xl: 1rem;
   --border-radius-2xl: 1.5rem;
   
   --transition-fast: 0.15s ease-in-out;
   --transition-normal: 0.3s ease-in-out;
   --transition-slow: 0.5s ease-in-out;
}

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

html {
   font-size: 62.5%;
   scroll-behavior: smooth;
}

body {
   font-family: 'Inter', sans-serif;
   background: var(--gradient-background);
   background-attachment: fixed;
   color: var(--text-primary);
   line-height: 1.6;
   overflow-x: hidden;
   min-height: 100vh;
}

/* Custom scrollbar */
::-webkit-scrollbar {
   width: 8px;
}

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

::-webkit-scrollbar-thumb {
   background: var(--gradient-primary);
   border-radius: var(--border-radius-sm);
}

::-webkit-scrollbar-thumb:hover {
   background: var(--primary-color);
}

header {
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1.5rem 5%;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(99, 102, 241, 0.2);
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    transition: all var(--transition-normal);
}

header.scrolled {
    background: rgba(15, 23, 42, 0.98);
    box-shadow: var(--shadow-lg);
    padding: 1rem 5%;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #8b5cf6 0%, #6366f1 100%);
    transition: left var(--transition-normal);
    z-index: -1;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 1rem 3rem rgba(99, 102, 241, 0.4);
}

.btn:hover::before {
    left: 0;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 0.8rem;
    border-radius: var(--border-radius-md);
    transition: all var(--transition-normal);
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid var(--border-primary);
}

.hamburger:hover {
    background: rgba(99, 102, 241, 0.2);
}

.hamburger span {
    width: 2.5rem;
    height: 0.2rem;
    background: var(--gradient-primary);
    margin: 0.2rem 0;
    transition: all var(--transition-normal);
    border-radius: var(--border-radius-sm);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
}

.logo {
    font-family: 'JetBrains Mono', monospace;
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
}

.logo::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-normal);
}

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

.logo:hover::after {
    width: 100%;
}

nav {
    display: flex;
    gap: 3rem;
    align-items: center;
}

nav a {
    font-size: 1.6rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 1rem 1.6rem;
    border-radius: var(--border-radius-md);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 4.5rem;
    box-sizing: border-box;
}

nav a.btn {
    padding: 0 2rem;
    background: var(--gradient-primary);
    color: var(--text-primary);
    border: none;
    font-weight: 600;
    letter-spacing: 0.05rem;
    margin-left: 1rem;
}

nav a.btn::before {
    background: linear-gradient(135deg, #8b5cf6 0%, #6366f1 100%);
}

nav a.btn:hover {
    background: linear-gradient(135deg, #8b5cf6 0%, #6366f1 100%);
    transform: translateY(-2px);
    box-shadow: 0 1rem 2rem rgba(99, 102, 241, 0.4);
}

nav a:not(.btn)::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    transition: left var(--transition-normal);
    z-index: -1;
}

nav a:not(.btn):hover,
nav a:not(.btn).active {
    color: var(--text-primary);
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid var(--border-primary);
}

nav a:not(.btn):hover::before {
    left: 0;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.theme-toggle {
    width: 4rem;
    height: 4rem;
    border-radius: 50%;
    background: rgba(99, 102, 241, 0.1);
    border: 2px solid var(--border-primary);
    color: var(--text-secondary);
    font-size: 1.6rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    justify-content: center;
    align-items: center;
}

.theme-toggle:hover {
    background: var(--gradient-primary);
    color: var(--text-primary);
    border-color: var(--primary-color);
    transform: scale(1.1);
}

/* Light theme variables */
:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #ec4899;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-glass: rgba(15, 23, 42, 0.8);
    
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    
    --border-primary: rgba(99, 102, 241, 0.3);
    --border-secondary: rgba(203, 213, 225, 0.1);
    
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-secondary: linear-gradient(135deg, #ec4899 0%, #f97316 100%);
    --gradient-background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    --border-radius-sm: 0.375rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1rem;
    --border-radius-2xl: 1.5rem;
    
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
}

/* Light theme */
.light-theme {
    --primary-color: #4f46e5;
    --secondary-color: #7c3aed;
    --accent-color: #be185d;
    --success-color: #059669;
    --warning-color: #d97706;
    --error-color: #dc2626;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-glass: rgba(255, 255, 255, 0.8);
    
    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-muted: #64748b;
    
    --border-primary: rgba(79, 70, 229, 0.3);
    --border-secondary: rgba(15, 23, 42, 0.1);
    
    --gradient-primary: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    --gradient-secondary: linear-gradient(135deg, #be185d 0%, #f97316 100%);
    --gradient-background: linear-gradient(135deg, #ffffff 0%, #f8fafc 50%, #f1f5f9 100%);
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.light-theme body {
    background: var(--gradient-background);
    background-attachment: fixed;
}

/* Particle background */
#particles-js {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

@media(max-width:995px) {
    .hamburger {
        display: flex;
    }

    nav{
        position: absolute;
        top: 100%;
        right: 0;
        width: 100%;
        border-left: none;
        border-bottom: none;
        border-bottom-left-radius: 0;
        padding: 2rem;
        background-color: #161616;
        border-top: 0.1rem solid #161616;
        display: none;
        flex-direction: column;
        align-items: center;
    }
    nav.active{
        display: flex;
        font-size: 2rem;
        margin: 0;
    }
    nav a:hover,
    nav a.active{
        padding: 0.5rem 1rem;
        border-radius: 0.5rem;
        border-bottom: none;
        margin: 0.5rem 0;
        width: 100%;
        text-align: center;
    }

    nav a {
        margin-left: 0;
        margin-top: 1rem;
        width: 100%;
    }
}

section {
    min-height: 100vh;
    padding: 10rem 5% 5rem;
    position: relative;
}

.home {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8rem;
    align-items: center;
    min-height: 80vh;
    position: relative;
    z-index: 2;
}

.home::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 80%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.15) 0%, transparent 50%);
    pointer-events: none;
}

.home-content {
    animation: slideInLeft 1s ease-out;
}

.home-content h1 {
    font-size: clamp(3.5rem, 8vw, 6rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 2rem;
    background: linear-gradient(135deg, #f8fafc 0%, #cbd5e1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.home-content h3 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
    margin-bottom: 2rem;
    color: var(--text-secondary);
}

.home-content p {
    font-size: 1.8rem;
    line-height: 1.7;
    color: var(--text-muted);
    margin-bottom: 3rem;
    max-width: 50rem;
}

.home-img {
    position: relative;
    animation: slideInRight 1s ease-out;
}

.home-img::before {
    content: '';
    position: absolute;
    top: -2rem;
    left: -2rem;
    right: -2rem;
    bottom: -2rem;
    background: var(--gradient-primary);
    border-radius: 50%;
    opacity: 0.1;
    animation: pulse 2s infinite;
}

.home-img img {
    width: 100%;
    max-width: 40rem;
    height: 40rem;
    object-fit: cover;
    border-radius: 50%;
    border: 3px solid transparent;
    background: var(--gradient-primary);
    padding: 3px;
    transition: all var(--transition-slow);
    cursor: pointer;
}

.home-img img:hover {
    transform: scale(1.05) rotate(2deg);
    box-shadow: 0 2rem 4rem rgba(99, 102, 241, 0.3);
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-5rem);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(5rem);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 0.1;
        transform: scale(1);
    }
    50% {
        opacity: 0.2;
        transform: scale(1.05);
    }
}


.social-icons {
    display: flex;
    gap: 1.5rem;
    margin-top: 3rem;
}

.social-icons a {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 5rem;
    height: 5rem;
    background: rgba(99, 102, 241, 0.1);
    border: 2px solid var(--border-primary);
    border-radius: 50%;
    font-size: 2rem;
    color: var(--text-secondary);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.social-icons a::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    transition: left var(--transition-normal);
    z-index: -1;
}

.social-icons a:hover {
    transform: translateY(-3px) scale(1.1);
    border-color: var(--primary-color);
    color: var(--text-primary);
    box-shadow: 0 1rem 2rem rgba(99, 102, 241, 0.3);
}

.social-icons a:hover::before {
    left: 0;
}


.typing-text {
    font-family: 'JetBrains Mono', monospace;
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    font-weight: 600;
    margin-bottom: 2rem;
    min-height: 3rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.typing-text span {
    display: inline-block;
    position: relative;
    color: var(--primary-color);
    min-width: 200px;
}

.typing-text span::after {
    content: "";
    position: absolute;
    width: 2px;
    height: 100%;
    background: var(--gradient-primary);
    right: 0;
    top: 0;
    animation: cursor 0.8s infinite;
}

@keyframes cursor {
    0%, 50% {
        opacity: 1;
    }
    51%, 100% {
        opacity: 0;
    }
}

@keyframes words {
    0%, 20% {
        content: "Full Stack Developer";
    }
    21%, 40% {
        content: "UI/UX Designer";
    }
    41%, 60% {
        content: "Frontend Engineer";
    }
    61%, 80% {
        content: "Web Developer";
    }
    81%, 100% {
        content: "Software Engineer";
    }
}

/* Modern responsive design */
@media(max-width: 1024px) {
    .home {
        gap: 4rem;
    }
    
    .home-content h1 {
        font-size: clamp(3rem, 6vw, 4rem);
    }
}

@media(max-width: 768px) {
    section {
        padding: 8rem 3% 3rem;
    }
    
    header {
        padding: 1rem 3%;
    }
    
    .home {
        grid-template-columns: 1fr;
        gap: 4rem;
        text-align: center;
        margin: 0;
    }
    
    .home-content {
        order: 2;
    }
    
    .home-img {
        order: 1;
    }
    
    .home-img img {
        max-width: 30rem;
        height: 30rem;
    }
    
    .social-icons {
        justify-content: center;
    }
    
    nav {
        gap: 2rem;
    }
}

/* About Section */
.about {
    background: var(--bg-secondary);
    position: relative;
}

.container {
    max-width: 120rem;
    margin: 0 auto;
    padding: 0 5%;
}

.section-header {
    text-align: center;
    margin-bottom: 6rem;
}

.section-header h2 {
    font-size: clamp(3rem, 5vw, 4rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.8rem;
    color: var(--text-muted);
}

.about-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 6rem;
    align-items: center;
}

.about-text h3 {
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2rem;
}

.about-text p {
    font-size: 1.8rem;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.about-actions {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}
.about-actions a{
    text-decoration: none;
}

.btn.outline {
    position: relative;
    display: inline-block;
    padding: 1rem 2.5rem;
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--primary-color);
    background: transparent;
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    cursor: pointer;
    overflow: hidden;
    transition: background var(--transition-normal), color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}


.btn.outline::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    transition: left var(--transition-normal);
    z-index: -1;
}

.btn.outline:hover, .btn.outline:focus {
    background: var(--gradient-primary);
    color: #fff;
    transform: translateY(-2px) scale(1.03);
    box-shadow: var(--shadow-lg);
    outline: none;
}

.btn.outline:hover::before, .btn.outline:focus::before {
    left: 0;
}

.btn.outline:active {
    transform: scale(0.98);
    box-shadow: var(--shadow-sm);
}

.btn.secondary {
    position: relative;
    display: inline-block;
    padding: 1rem 2.5rem;
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--primary-color);
    background: transparent;
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    cursor: pointer;
    overflow: hidden;
    transition: background var(--transition-normal), color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}


.btn.secondary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    transition: left var(--transition-normal);
    z-index: -1;
}

.btn.secondary:hover, .btn.secondary:focus {
    background: var(--gradient-primary);
    color: #fff;
    transform: translateY(-2px) scale(1.03);
    box-shadow: var(--shadow-lg);
    outline: none;
}

.btn.secondary:hover::before, .btn.secondary:focus::before {
    left: 0;
}

.btn.secondary:active {
    transform: scale(0.98);
    box-shadow: var(--shadow-sm);
}

.skills-stats {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.stat-item {
    text-align: center;
    padding: 2rem;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius-lg);
    transition: transform var(--transition-normal);
}

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

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--gradient-primary);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.4rem;
    color: var(--text-muted);
}

/* Skills Section */
.skills-section {
    margin-top: 6rem;
    padding-top: 4rem;
    border-top: 2px solid var(--border-primary);
}

.skills-section h3 {
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 3rem;
    text-align: center;
}

.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(30rem, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.skill-item {
    background: var(--bg-tertiary);
    padding: 2.5rem;
    border-radius: var(--border-radius-lg);
    border: 2px solid var(--border-primary);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.skill-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.1), transparent);
    transition: left 0.8s ease;
}

.skill-item:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 1rem 3rem rgba(99, 102, 241, 0.2);
}

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

.skill-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--text-primary);
}

.skill-header i {
    font-size: 2.5rem;
    color: var(--primary-color);
    width: 3rem;
    text-align: center;
}

.skill-progress {
    position: relative;
    width: 100%;
    height: 0.8rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    margin-bottom: 1rem;
}

.progress-bar {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background: var(--gradient-primary);
    width: 0%;
    border-radius: var(--border-radius-sm);
    transition: width 1.5s ease;
    animation: progressAnimation 2s ease forwards;
}

.skill-percentage {
    display: block;
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--primary-color);
    text-align: right;
}

@keyframes progressAnimation {
    0% {
        width: 0%;
    }
    100% {
        width: var(--progress);
    }
}

/* Skills section animations */
.skill-item {
    opacity: 0;
    transform: translateY(30px);
    animation: skillFadeIn 0.8s ease forwards;
}

.skill-item:nth-child(1) { animation-delay: 0.1s; }
.skill-item:nth-child(2) { animation-delay: 0.2s; }
.skill-item:nth-child(3) { animation-delay: 0.3s; }
.skill-item:nth-child(4) { animation-delay: 0.4s; }
.skill-item:nth-child(5) { animation-delay: 0.5s; }
.skill-item:nth-child(6) { animation-delay: 0.6s; }

@keyframes skillFadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Portfolio Section */
.portfolio {
    background: var(--bg-primary);
}

.portfolio-filters {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 4rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 1rem 2rem;
    background: var(--bg-secondary);
    border: 2px solid var(--border-primary);
    border-radius: var(--border-radius-lg);
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--gradient-primary);
    color: var(--text-primary);
    border-color: var(--primary-color);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(35rem, 1fr));
    gap: 3rem;
}

.portfolio-item {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
    border: 2px solid transparent;
}

.portfolio-item:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 2rem 4rem rgba(99, 102, 241, 0.2);
}

.portfolio-image {
    position: relative;
    overflow: hidden;
    height: 25rem;
}

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

.portfolio-item:hover .portfolio-image img {
    transform: scale(1.1);
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(99, 102, 241, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-link,
.portfolio-github {
    width: 5rem;
    height: 5rem;
    background: var(--text-primary);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2rem;
    color: var(--primary-color);
    transition: all var(--transition-normal);
}

.portfolio-link:hover,
.portfolio-github:hover {
    transform: scale(1.1);
    background: var(--accent-color);
    color: var(--text-primary);
}

.portfolio-info {
    padding: 2rem;
}

.portfolio-info h3 {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.portfolio-info p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.portfolio-tech {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.portfolio-tech span {
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    color: var(--primary-color);
    font-size: 1.2rem;
    border-radius: var(--border-radius-sm);
    font-weight: 500;
}

/* Experience Section */
.experience {
    background: var(--bg-secondary);
}

.timeline {
    max-width: 80rem;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: var(--gradient-primary);
}

.timeline-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
    position: relative;
}

.timeline-item:nth-child(even) {
    direction: rtl;
}

.timeline-marker {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2rem;
    height: 2rem;
    background: var(--gradient-primary);
    border-radius: 50%;
    border: 4px solid var(--bg-secondary);
    z-index: 2;
}

.timeline-content {
    background: var(--bg-tertiary);
    padding: 2.5rem;
    border-radius: var(--border-radius-lg);
    position: relative;
}

.timeline-content::before {
    content: '';
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border: 1rem solid transparent;
}

.timeline-item:nth-child(odd) .timeline-content::before {
    right: -2rem;
    border-left-color: var(--bg-tertiary);
}

.timeline-item:nth-child(even) .timeline-content::before {
    left: -2rem;
    border-right-color: var(--bg-tertiary);
}

.timeline-content h3 {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.timeline-content h4 {
    font-size: 1.6rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-weight: 500;
}

.timeline-date {
    display: inline-block;
    background: var(--gradient-primary);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius-sm);
    font-size: 1.2rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.timeline-content p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Contact Section */
.contact {
    background: var(--bg-primary);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: start;
}

.contact-info h3 {
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2rem;
}

.contact-info p {
    font-size: 1.8rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    line-height: 1.7;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    font-size: 1.6rem;
    color: var(--text-secondary);
}

.contact-item i {
    width: 2rem;
    color: var(--primary-color);
    font-size: 2rem;
}

.contact-form {
    background: var(--bg-secondary);
    padding: 3rem;
    border-radius: var(--border-radius-lg);
    border: 2px solid var(--border-primary);
}

.form-group {
    margin-bottom: 2rem;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 1.5rem;
    background: var(--bg-tertiary);
    border: 2px solid var(--border-primary);
    border-radius: var(--border-radius-md);
    color: var(--text-primary);
    font-size: 1.6rem;
    font-family: inherit;
    transition: all var(--transition-normal);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.contact-form textarea {
    resize: vertical;
    min-height: 12rem;
}


/* Footer */
footer {
    background: var(--bg-secondary);
    border-top: 2px solid var(--border-primary);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 4rem;
    padding: 4rem 0;
}

.footer-brand h3 {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 1.6rem;
}

.footer-links {
    margin-top: 4.5rem;
    display: flex;
    flex-direction: row;
    gap: 1rem;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 1.6rem;
    transition: color var(--transition-normal);
}

.footer-links a:hover {
    color: var(--primary-color);
}

.footer-social {
    display: flex;
    gap: 0 1.5rem;
    justify-content: flex-end;
}

.footer-social a {
    width: 4rem;
    height: 4rem;
    background: var(--bg-tertiary);
    border: 2px solid var(--border-primary);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.8rem;
    color: var(--text-secondary);
    transition: all var(--transition-normal);
}

.footer-social a:hover {
    background: var(--gradient-primary);
    border-color: var(--primary-color);
    color: var(--text-primary);
    transform: translateY(-2px);
}

.footer-bottom {
    border-top: 1px solid var(--border-primary);
    padding: 2rem 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 1.4rem;
    margin: 0;
}

.footer-bottom .footer-social {
    display: flex;
    gap: 1.5rem;
    margin: 0;
}

.footer-bottom .footer-social a {
    width: 3.5rem;
    height: 3.5rem;
    font-size: 1.6rem;
}

/* Responsive Design */
@media(max-width: 1024px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 4rem;
        text-align: center;
    }
    
    .portfolio-grid {
        grid-template-columns: repeat(auto-fit, minmax(30rem, 1fr));
        gap: 2rem;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 4rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    
    .footer-social {
        justify-content: center;
    }
}

@media(max-width: 768px) {
    .timeline::before {
        left: 2rem;
    }
    
    .timeline-item {
        grid-template-columns: 1fr;
        gap: 2rem;
        direction: ltr;
    }
    
    .timeline-marker {
        left: 2rem;
    }
    
    .timeline-content::before {
        left: -2rem;
        border-right-color: var(--bg-tertiary);
        border-left-color: transparent;
    }
    
    .portfolio-filters {
        gap: 0.5rem;
    }
    
    .filter-btn {
        padding: 0.8rem 1.5rem;
        font-size: 1.4rem;
    }
    
    .contact-form {
        padding: 2rem;
    }
}

@media(max-width: 480px) {
    .container {
        padding: 0 3%;
    }
    
    .section-header {
        margin-bottom: 4rem;
    }
    
    .section-header h2 {
        font-size: clamp(2.5rem, 6vw, 3rem);
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .portfolio-image {
        height: 20rem;
    }
    
    .timeline-content {
        padding: 2rem;
    }
    
    .contact-info h3 {
        font-size: 2rem;
    }
    
    .contact-info p {
        font-size: 1.6rem;
    }
    
    .skills-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .skill-item {
        padding: 2rem;
    }
    
    .skill-header {
        font-size: 1.6rem;
        margin-bottom: 1rem;
    }
    
    .skill-header i {
        font-size: 2rem;
    }
}

/* Stylish button for .btn-nth */
.btn-nth {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--text-primary);
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: background var(--transition-normal), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-nth:hover, .btn-nth:focus {
    background: var(--gradient-primary);
    color: #fff;
    transform: translateY(-2px) scale(1.03);
    box-shadow: var(--shadow-lg);
    outline: none;
}

.btn-nth:active {
    transform: scale(0.98);
    box-shadow: var(--shadow-sm);
}