/* CSS Variables for Theme */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #ffffff;
    --text-primary: #333;
    --text-secondary: #4b5563;
    --text-muted: #6b7280;
    --accent-primary: #2563eb;
    --accent-secondary: #fbbf24;
    --border-color: #e5e7eb;
    --shadow-color: rgba(0, 0, 0, 0.05);
    --navbar-bg: rgba(255, 255, 255, 0.95);
    --card-bg: #ffffff;
    --input-bg: #ffffff;
    --input-border: #e5e7eb;
    --animation-duration: 0.6s;
    --animation-timing: cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --accent-primary: #3b82f6;
    --accent-secondary: #fbbf24;
    --border-color: #475569;
    --shadow-color: rgba(0, 0, 0, 0.3);
    --navbar-bg: rgba(15, 23, 42, 0.95);
    --card-bg: #1e293b;
    --input-bg: #334155;
    --input-border: #475569;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation Bar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--navbar-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-bottom: 1px solid transparent;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transform: translateY(-100%);
    opacity: 0;
}

.navbar.navbar-visible {
    transform: translateY(0);
    opacity: 1;
}

.navbar.navbar-scrolled {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    border-bottom: 1px solid rgba(229, 231, 235, 0.5);
    padding: 0.75rem 0;
}

[data-theme="dark"] .navbar.navbar-scrolled {
    background: rgba(15, 23, 42, 0.98);
    border-bottom: 1px solid rgba(71, 85, 105, 0.5);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo a {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-primary);
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    display: inline-block;
    opacity: 0;
    transform: translateY(-20px);
}

.navbar.navbar-visible .nav-logo a {
    animation: logoEntrance 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

.nav-logo a:hover {
    color: var(--accent-secondary);
    transform: scale(1.05);
}

.nav-logo a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 1px;
}

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

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    margin: 0;
    padding: 0;
    opacity: 0;
    transform: translateY(-20px);
}

.navbar.navbar-visible .nav-menu {
    animation: menuEntrance 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) 0.2s forwards;
}

.nav-item {
    position: relative;
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    display: inline-block;
    opacity: 0;
    transform: translateY(-20px);
}

.navbar.navbar-visible .nav-link:nth-child(1) { animation: linkEntrance 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) 0.4s forwards; }
.navbar.navbar-visible .nav-link:nth-child(2) { animation: linkEntrance 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) 0.5s forwards; }
.navbar.navbar-visible .nav-link:nth-child(3) { animation: linkEntrance 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) 0.6s forwards; }
.navbar.navbar-visible .nav-link:nth-child(4) { animation: linkEntrance 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) 0.7s forwards; }
.navbar.navbar-visible .nav-link:nth-child(5) { animation: linkEntrance 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) 0.8s forwards; }

.nav-link:hover {
    color: var(--accent-primary);
    background: rgba(59, 130, 246, 0.1);
    transform: translateY(-2px);
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateX(-50%);
    border-radius: 1px;
}

.nav-link:hover::before {
    width: 80%;
}

.nav-link.active {
    color: var(--accent-primary);
    background: rgba(59, 130, 246, 0.1);
}

.nav-link.active::before {
    width: 80%;
}

.theme-toggle {
    margin-right: 1rem;
}

.theme-toggle-btn {
    background: var(--accent-primary);
    border: 2px solid var(--accent-primary);
    color: white;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 1.1rem;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(-20px) scale(0.8);
}

.navbar.navbar-visible .theme-toggle-btn {
    animation: buttonEntrance 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) 1s forwards;
}

.theme-toggle-btn:hover {
    background: var(--accent-secondary);
    border-color: var(--accent-secondary);
    transform: scale(1.1) rotate(180deg);
    box-shadow: 0 8px 25px rgba(251, 191, 36, 0.4);
}

.theme-toggle-btn:active {
    transform: scale(0.95);
}

.theme-toggle-btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(-20px);
}

.navbar.navbar-visible .hamburger {
    animation: buttonEntrance 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) 1.1s forwards;
}

.hamburger:hover {
    background: rgba(59, 130, 246, 0.1);
}

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

.hamburger.active .bar:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
    background-color: var(--accent-primary);
}

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

.hamburger.active .bar:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
    background-color: var(--accent-primary);
}

/* Navigation Animations */
@keyframes logoEntrance {
    0% {
        opacity: 0;
        transform: translateY(-20px) scale(0.8);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes menuEntrance {
    0% {
        opacity: 0;
        transform: translateY(-20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes linkEntrance {
    0% {
        opacity: 0;
        transform: translateY(-20px) scale(0.9);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes buttonEntrance {
    0% {
        opacity: 0;
        transform: translateY(-20px) scale(0.8);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: var(--navbar-bg);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        width: 100%;
        text-align: center;
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: 0 10px 27px var(--shadow-color);
        padding: 2rem 0;
        gap: 1rem;
        border-top: 1px solid var(--border-color);
        opacity: 1;
        transform: none;
    }

    .nav-menu.active {
        left: 0;
        animation: mobileMenuSlide 0.4s cubic-bezier(0.4, 0, 0.2, 1) forwards;
    }

    .nav-link {
        padding: 1rem 2rem;
        font-size: 1.1rem;
        border-radius: 0;
        margin: 0.5rem 0;
        opacity: 1;
        transform: none;
    }

    .nav-link:hover {
        background: rgba(59, 130, 246, 0.1);
        transform: translateX(10px);
    }

    .nav-link::before {
        display: none;
    }

    .theme-toggle {
        margin-right: 0;
    }
}

@keyframes mobileMenuSlide {
    0% {
        transform: translateX(-100%);
        opacity: 0;
    }
    100% {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    color: white;
    padding-top: 80px;
    overflow: hidden;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 50%, #7c3aed 100%);
    background-size: 400% 400%;
    animation: backgroundShift 20s ease infinite;
    opacity: 0.8;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="20" height="20" patternUnits="userSpaceOnUse"><path d="M 20 0 L 0 0 0 20" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
    animation: float 30s ease-in-out infinite;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
    animation: heroTitleEntrance 1.2s cubic-bezier(0.34, 1.56, 0.64, 1) 0.3s both;
    position: relative;
    z-index: 1;
}

.highlight {
    color: #fbbf24;
    animation: textGlow 3s ease-in-out infinite;
    position: relative;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-secondary), transparent);
    animation: shimmer 2s ease-in-out infinite;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: 1rem;
    opacity: 0.9;
    animation: heroSubtitleEntrance 1.2s cubic-bezier(0.34, 1.56, 0.64, 1) 0.6s both;
    position: relative;
    z-index: 1;
}

.hero-description {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.8;
    line-height: 1.7;
    animation: heroDescriptionEntrance 1.2s cubic-bezier(0.34, 1.56, 0.64, 1) 0.9s both;
    position: relative;
    z-index: 1;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    animation: heroButtonsEntrance 1.2s cubic-bezier(0.34, 1.56, 0.64, 1) 1.2s both;
    position: relative;
    z-index: 1;
}

.btn {
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: #fbbf24;
    color: #1f2937;
    animation: buttonGlow 3s ease-in-out infinite;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

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

.btn-primary:hover {
    background: #f59e0b;
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 15px 35px rgba(251, 191, 36, 0.4);
    animation: buttonPulse 1s infinite;
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
    position: relative;
    overflow: hidden;
}

.btn-secondary::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 ease;
}

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

.btn-secondary:hover {
    background: white;
    color: #1f2937;
    transform: translateY(-3px) scale(1.05);
    animation: buttonGlow 2s ease-in-out infinite;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: heroImageEntrance 1.5s cubic-bezier(0.34, 1.56, 0.64, 1) 1.5s both;
    position: relative;
    z-index: 1;
}

.hero-avatar {
    width: 280px;
    height: 280px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 7rem;
    color: rgba(255, 255, 255, 0.3);
    border: 4px solid rgba(255, 255, 255, 0.2);
    max-width: 100%;
    max-height: 100%;
    animation: float-gentle 6s ease-in-out infinite;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.hero-avatar:hover {
    animation: none;
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.4);
}

/* Section Styles */
section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: var(--text-primary);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, #2563eb, #fbbf24);
    border-radius: 2px;
}

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

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.about-content.animate {
    opacity: 1;
    transform: translateY(0);
}

.about-text p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.stat {
    text-align: center;
    padding: 2rem;
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: 0 4px 6px var(--shadow-color);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
}

.stat::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.1), transparent);
    transition: left 0.6s ease;
}

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

.stat:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.stat.animate {
    opacity: 1;
    transform: translateY(0);
}

.stat:nth-child(1) { transition-delay: 0.2s; }
.stat:nth-child(2) { transition-delay: 0.4s; }
.stat:nth-child(3) { transition-delay: 0.6s; }

.stat h3 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: 0.5rem;
}

.stat p {
    color: var(--text-muted);
    font-weight: 500;
}

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.skill-category {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px var(--shadow-color);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
}

.skill-category::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.1), transparent);
    transition: left 0.6s ease;
}

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

.skill-category:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

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

.skill-category:nth-child(1) { transition-delay: 0.2s; }
.skill-category:nth-child(2) { transition-delay: 0.4s; }
.skill-category:nth-child(3) { transition-delay: 0.6s; }

.skill-category h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    text-align: center;
}

.skill-items {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.skill-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateX(-20px);
}

.skill-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.1), transparent);
    transition: left 0.4s ease;
}

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

.skill-item:hover {
    background: var(--border-color);
    transform: translateX(5px) scale(1.02);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

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

.skill-item:nth-child(1) { transition-delay: 0.1s; }
.skill-item:nth-child(2) { transition-delay: 0.2s; }
.skill-item:nth-child(3) { transition-delay: 0.3s; }
.skill-item:nth-child(4) { transition-delay: 0.4s; }

.skill-item i {
    font-size: 1.5rem;
    color: var(--accent-primary);
}

.skill-item span {
    font-weight: 500;
    color: var(--text-secondary);
}

/* Projects Section */
.projects {
    background: var(--bg-secondary);
}

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

.project-card {
    background: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px var(--shadow-color);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    opacity: 0;
    transform: translateY(30px);
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.1), transparent);
    transition: left 0.6s ease;
    z-index: 1;
}

.project-card:hover::before {
    left: 100%;
}

.project-card:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
}

.project-card.animate {
    opacity: 1;
    transform: translateY(0);
}

.project-card:nth-child(1) { transition-delay: 0.2s; }
.project-card:nth-child(2) { transition-delay: 0.4s; }
.project-card:nth-child(3) { transition-delay: 0.6s; }

.project-image {
    height: 200px;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    transition: all 0.4s ease;
}

.project-image::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 0.6s ease;
}

.project-card:hover .project-image::before {
    left: 100%;
}

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

.project-placeholder {
    color: white;
    font-size: 4rem;
    opacity: 0.8;
    transition: all 0.3s ease;
}

.project-card:hover .project-placeholder {
    transform: scale(1.1) rotate(5deg);
    opacity: 1;
}

.project-content {
    padding: 1.5rem;
}

.project-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

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

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.project-tech span {
    background: var(--bg-tertiary);
    color: var(--accent-primary);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
}

.project-links {
    display: flex;
    gap: 1rem;
}

.project-link {
    text-decoration: none;
    color: var(--accent-primary);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: color 0.3s ease;
}

.project-link:hover {
    color: var(--accent-primary);
    opacity: 0.8;
}

/* Contact Section */
.contact-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3rem;
    max-width: 800px;
    margin: 0 auto;
}

.contact-info {
    flex: 1;
    max-width: 500px;
    margin: 0 auto;
    text-align: center;
    padding: 2rem;
}

.contact-info h3 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.contact-info p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin: 2rem 0;
    align-items: center;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    min-width: 250px;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(20px);
}

.contact-method::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.1), transparent);
    transition: left 0.4s ease;
}

.contact-method:hover::before {
    left: 100%;
}

.contact-method:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
    background: var(--bg-tertiary);
}

.contact-method.animate {
    opacity: 1;
    transform: translateY(0);
}

.contact-method:nth-child(1) { transition-delay: 0.2s; }
.contact-method:nth-child(2) { transition-delay: 0.4s; }
.contact-method:nth-child(3) { transition-delay: 0.6s; }

.contact-method i {
    color: #2563eb;
    font-size: 1.2rem;
}

.social-links {
    display: flex;
    gap: 1.5rem;
    margin-top: 2rem;
    justify-content: center;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: var(--accent-primary);
    color: white;
    border-radius: 50%;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(20px) scale(0.8);
}

.social-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.4s ease;
}

.social-link:hover::before {
    left: 100%;
}

.social-link:hover {
    background: var(--accent-primary);
    transform: translateY(-5px) scale(1.1);
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.4);
}

.social-link.animate {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.social-link:nth-child(1) { transition-delay: 0.2s; }
.social-link:nth-child(2) { transition-delay: 0.3s; }
.social-link:nth-child(3) { transition-delay: 0.4s; }
.social-link:nth-child(4) { transition-delay: 0.5s; }

/* Footer */
.footer {
    background: #1f2937;
    color: white;
    text-align: center;
    padding: 2rem 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
}

/* Hero Animations */
@keyframes heroTitleEntrance {
    0% {
        opacity: 0;
        transform: translateY(50px) scale(0.8);
        filter: blur(10px);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
        filter: blur(0);
    }
}

@keyframes heroSubtitleEntrance {
    0% {
        opacity: 0;
        transform: translateY(30px) scale(0.9);
        filter: blur(5px);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
        filter: blur(0);
    }
}

@keyframes heroDescriptionEntrance {
    0% {
        opacity: 0;
        transform: translateY(20px);
        filter: blur(3px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
        filter: blur(0);
    }
}

@keyframes heroButtonsEntrance {
    0% {
        opacity: 0;
        transform: translateY(25px) scale(0.8);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes heroImageEntrance {
    0% {
        opacity: 0;
        transform: translateX(50px) scale(0.7) rotate(-10deg);
    }
    100% {
        opacity: 1;
        transform: translateX(0) scale(1) rotate(0deg);
    }
}

/* Button Animations */
@keyframes buttonPulse {
    0% {
        box-shadow: 0 0 0 0 rgba(251, 191, 36, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(251, 191, 36, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(251, 191, 36, 0);
    }
}

@keyframes buttonGlow {
    0%, 100% {
        box-shadow: 0 0 5px rgba(251, 191, 36, 0.5);
    }
    50% {
        box-shadow: 0 0 20px rgba(251, 191, 36, 0.8), 0 0 30px rgba(251, 191, 36, 0.6);
    }
}

/* Background Animations */
@keyframes backgroundShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

@keyframes textGlow {
    0%, 100% {
        text-shadow: 0 0 5px rgba(251, 191, 36, 0.5);
    }
    50% {
        text-shadow: 0 0 20px rgba(251, 191, 36, 0.8), 0 0 30px rgba(251, 191, 36, 0.6);
    }
}

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

@keyframes float-gentle {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    25% {
        transform: translateY(-8px) rotate(1deg);
    }
    50% {
        transform: translateY(-15px) rotate(0deg);
    }
    75% {
        transform: translateY(-8px) rotate(-1deg);
    }
}

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

/* Performance Optimizations */
@media (prefers-reduced-motion: reduce) {
    .hero::before,
    .hero::after,
    .hero-avatar,
    .highlight,
    .btn-primary,
    .btn-secondary {
        animation: none;
    }
    
    .skill-category,
    .project-card,
    .stat {
        animation: none;
        transition: none;
    }
}

/* Focus styles for accessibility */
button:focus,
input:focus,
textarea:focus,
a:focus {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

/* Smooth transitions for theme changes */
* {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}