/* CSS Variables for Theme Support */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-card: #ffffff;
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-accent: #667eea;
    --border-color: #e2e8f0;
    --shadow-light: rgba(0, 0, 0, 0.1);
    --shadow-medium: rgba(0, 0, 0, 0.15);
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #e2e8f0;
    --text-accent: #818cf8;
    --border-color: #334155;
    --shadow-light: rgba(0, 0, 0, 0.4);
    --shadow-medium: rgba(0, 0, 0, 0.6);
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px; /* Account for fixed navbar height when scrolling to anchors */
}

@media (max-width: 768px) {
    html {
        scroll-padding-top: 70px; /* Adjust for mobile navbar height */
    }
}

body {
    font-family: 'Inter', Arial, 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;
}

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

/* Loading Screen */
#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}

.loader .code-text {
    font-size: 2rem;
    font-weight: 600;
    color: #fff;
    animation: pulse 2s infinite;
}

.code-text span:first-child,
.code-text span:last-child {
    color: #ffd700;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

[data-theme="dark"] .navbar {
    background: rgba(15, 23, 42, 0.95);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 20px var(--shadow-light);
    padding: 0.5rem 0;
}

[data-theme="dark"] .navbar.scrolled {
    background: rgba(15, 23, 42, 0.98);
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease;
}

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

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

.logo-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.logo-tagline {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-accent);
    line-height: 1;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    position: relative;
    transition: color 0.3s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

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

.nav-link:hover {
    color: var(--text-accent);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px; /* Account for fixed navbar */
}

.hero-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 20px;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-text {
    color: #fff;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.typing-text {
    display: inline-block;
}

.cursor {
    display: inline-block;
    background-color: #fff;
    margin-left: 3px;
    width: 3px;
    animation: blink 1s infinite;
}

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

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #e0e7ff;
}

.hero-description {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: #cbd5f5;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.btn-primary, .btn-secondary {
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px transparent;
    display: inline-block;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px var(--shadow-medium);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-accent);
    border-color: var(--text-accent);
}

.btn-secondary:hover {
    background: var(--text-accent);
    color: #fff;
    transform: translateY(-2px);
}

/* Code Block Visualization */
.hero-visual {
    display: flex;
    justify-content: center;
}

.code-block {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 0;
    width: 100%;
    max-width: 400px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    animation: float 3s ease-in-out infinite;
}

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

.code-header {
    background: rgba(255, 255, 255, 0.1);
    padding: 15px 20px;
    border-radius: 15px 15px 0 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: #fff;
    font-size: 0.9rem;
}

.code-dots {
    display: flex;
    gap: 8px;
}

.code-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #ff5f56;
}

.code-dots span:nth-child(2) {
    background: #ffbd2e;
}

.code-dots span:nth-child(3) {
    background: #27ca3f;
}

.code-content {
    padding: 20px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
}

.code-line {
    display: flex;
    margin-bottom: 8px;
    color: #fff;
}

.line-number {
    color: #a0a9c0;
    margin-right: 15px;
    min-width: 20px;
}

.code-text {
    color: #e0e7ff;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
}

.mouse {
    width: 25px;
    height: 40px;
    border: 2px solid #fff;
    border-radius: 15px;
    margin: 0 auto 10px;
    position: relative;
}

.wheel {
    width: 3px;
    height: 6px;
    background: #fff;
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { top: 8px; opacity: 0; }
    10% { opacity: 1; }
    100% { top: 24px; opacity: 0; }
}

.arrows {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.arrows span {
    width: 1px;
    height: 8px;
    background: #fff;
    margin: 1px;
    animation: bounce 2s infinite;
}

.arrows span:nth-child(2) {
    animation-delay: 0.1s;
}

.arrows span:nth-child(3) {
    animation-delay: 0.2s;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-5px); }
    60% { transform: translateY(-3px); }
}

/* Floating Elements */
.floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.floating-element {
    position: absolute;
    font-size: 2rem;
    animation: floatAround 10s infinite ease-in-out;
    animation-delay: var(--delay);
    opacity: 0.7;
}

.floating-element:nth-child(1) { top: 20%; left: 10%; }
.floating-element:nth-child(2) { top: 60%; right: 10%; }
.floating-element:nth-child(3) { bottom: 30%; left: 20%; }
.floating-element:nth-child(4) { top: 30%; right: 30%; }

@keyframes floatAround {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    25% { transform: translateY(-20px) rotate(5deg); }
    50% { transform: translateY(-10px) rotate(-5deg); }
    75% { transform: translateY(-15px) rotate(3deg); }
}

/* Sections */
.section {
    padding: 120px 0 80px 0; /* Increased top padding to account for fixed navbar */
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.6s ease;
    background: var(--bg-primary);
}

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

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 15px;
}

.section-description {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-top: 1rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.section-line {
    width: 60px;
    height: 4px;
    background: var(--gradient-primary);
    margin: 0 auto;
    border-radius: 2px;
}

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text p {
    font-size: 1.1rem;
    margin-bottom: 1.8rem;
    color: var(--text-secondary);
    line-height: 1.8;
    font-weight: 400;
    text-align: justify;
    position: relative;
    padding-left: 20px;
}

.about-text p::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 4px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 50%;
    opacity: 0.7;
}

.about-text h3 {
    color: var(--text-primary);
    margin-bottom: 2rem;
    font-size: 2.2rem;
    font-weight: 700;
    position: relative;
    padding-bottom: 15px;
}

.about-text h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
    opacity: 1;
    transform: translateY(0);
    transition: all 0.6s ease;
}

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

.stat-item {
    text-align: center;
    padding: 20px;
    background: var(--bg-card);
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-accent);
    margin-bottom: 10px;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.about-image {
    display: flex;
    justify-content: center;
}

.profile-image {
    width: 280px;
    height: 280px;
    border-radius: 50%;
    overflow: hidden;
    position: relative;
    box-shadow: 0 20px 60px var(--shadow-medium);
    transition: all 0.3s ease;
    border: 4px solid var(--bg-card);
}

.profile-image:hover {
    transform: scale(1.05);
    box-shadow: 0 30px 80px var(--shadow-medium);
}

.profile-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: all 0.3s ease;
}

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

.image-placeholder {
    width: 250px;
    height: 250px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    color: #fff;
    animation: pulse-subtle 3s ease-in-out infinite;
}

@keyframes pulse-subtle {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* Skills Section */
.skills-section {
    background: var(--bg-secondary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.skill-category {
    background: var(--bg-card);
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 25px var(--shadow-light);
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(30px);
    border: 1px solid var(--border-color);
}

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

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 35px var(--shadow-medium);
}

.category-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.8rem;
    color: #fff;
}

.skill-category h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.skill-tag {
    background: var(--bg-secondary);
    color: var(--text-accent);
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.skill-tag:hover {
    background: var(--text-accent);
    color: #fff;
    transform: translateY(-2px);
}

/* Timeline */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.timeline-item {
    position: relative;
    margin-bottom: 50px;
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.6s ease;
}

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

.timeline-dot {
    position: absolute;
    left: 21px;
    top: 0;
    width: 20px;
    height: 20px;
    background: #667eea;
    border-radius: 50%;
    border: 4px solid #fff;
    box-shadow: 0 0 0 4px #e0e7ff;
}

.timeline-content {
    margin-left: 80px;
    background: var(--bg-card);
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 5px 25px var(--shadow-light);
    border: 1px solid var(--border-color);
}

.timeline-date {
    color: var(--text-accent);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.timeline-content h3 {
    font-size: 1.3rem;
    margin-bottom: 5px;
    color: var(--text-primary);
}

.timeline-content h4 {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 15px;
}

.timeline-content ul {
    list-style: none;
    padding: 0;
}

.timeline-content li {
    margin-bottom: 8px;
    padding-left: 20px;
    position: relative;
    color: var(--text-secondary);
    line-height: 1.6;
}

.timeline-content li::before {
    content: '▶';
    position: absolute;
    left: 0;
    color: var(--text-accent);
    font-size: 0.8rem;
}

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

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

.project-card {
    background: var(--bg-card);
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 5px 25px var(--shadow-light);
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(30px);
    border: 1px solid var(--border-color);
}

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

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 35px var(--shadow-medium);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.project-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: #fff;
}

.project-links {
    display: flex;
    gap: 10px;
}

.project-link {
    width: 35px;
    height: 35px;
    background: var(--bg-secondary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.project-link:hover {
    background: var(--text-accent);
    color: #fff;
    transform: translateY(-2px);
}

.project-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.project-card p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 20px;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 15px;
}

.tech-tag {
    background: var(--bg-secondary);
    color: var(--text-accent);
    padding: 6px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
}

.project-date {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

/* Project Categories */
.project-categories {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 40px;
}

.category-btn {
    padding: 10px 25px;
    border: 2px solid var(--text-accent);
    background: transparent;
    color: var(--text-accent);
    border-radius: 25px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.category-btn:hover,
.category-btn.active {
    background: var(--text-accent);
    color: #fff;
    transform: translateY(-2px);
}

.section-description {
    color: #666;
    font-size: 1.1rem;
    margin-top: 15px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Enhanced Project Cards */
.project-card.featured {
    border: 2px solid var(--text-accent);
    position: relative;
}

.project-badge {
    position: absolute;
    top: -10px;
    right: 20px;
    background: var(--gradient-primary);
    color: #fff;
    padding: 5px 15px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
}

.project-features {
    margin-bottom: 20px;
}

.project-features span {
    display: block;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 5px;
    line-height: 1.4;
}

.projects-show-more {
    text-align: center;
    margin-top: 40px;
}

.show-more-btn {
    padding: 12px 30px;
    border: 2px solid var(--text-accent);
    background: transparent;
    color: var(--text-accent);
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.show-more-btn:hover {
    background: var(--text-accent);
    color: #fff;
    transform: translateY(-2px);
}

/* Project Filtering */
.project-card.hidden {
    display: none;
}

.project-card.show {
    display: block;
    animation: fadeInUp 0.6s ease forwards;
}

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

/* Contact Section */
.contact-section {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 100px 0;
}

.contact-section .section-title {
    color: var(--text-primary);
}

.contact-section .section-line {
    background: var(--gradient-primary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.contact-info p {
    color: var(--text-secondary);
    margin-bottom: 30px;
    line-height: 1.6;
}

.contact-items {
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
    font-size: 1.2rem;
}

.contact-text span {
    display: block;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 5px;
}

.contact-text a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.contact-text a:hover {
    color: var(--text-accent);
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-link {
    width: 45px;
    height: 45px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: var(--text-accent);
    color: #fff;
    transform: translateY(-3px);
    border-color: var(--text-accent);
}

/* Contact Form */
.contact-form h3 {
    font-size: 1.5rem;
    margin-bottom: 25px;
    color: var(--text-primary);
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
}

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

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--text-accent);
    transform: translateY(-2px);
}

/* Form Alerts and Loading States */
.form-message {
    margin-top: 1rem;
}

.alert {
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    line-height: 1.4;
}

.alert-success {
    background-color: #d4edda;
    border-color: #c3e6cb;
    color: #155724;
}

[data-theme="dark"] .alert-success {
    background-color: rgba(16, 185, 129, 0.1);
    border-color: rgba(16, 185, 129, 0.3);
    color: #10b981;
}

.alert-error {
    background-color: #f8d7da;
    border-color: #f5c6cb;
    color: #721c24;
}

[data-theme="dark"] .alert-error {
    background-color: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.3);
    color: #ef4444;
}

.btn-loading {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none !important;
}

.btn-primary:disabled:hover {
    transform: none !important;
}

/* Footer */
.footer {
    background: var(--bg-primary);
    color: var(--text-secondary);
    padding: 30px 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-text p {
    margin-bottom: 5px;
    color: var(--text-secondary);
}

.footer-links a {
    color: var(--text-accent);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

/* Hero Stats */
.hero-stats {
    display: flex;
    gap: 2rem;
    margin: 2rem 0;
    padding: 1.5rem;
    background: var(--bg-card);
    border-radius: 15px;
    box-shadow: 0 10px 30px var(--shadow-light);
}

.hero-stat {
    text-align: center;
    flex: 1;
}

.hero-stat .stat-number {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-accent);
    margin-bottom: 0.25rem;
}

.hero-stat .stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Value Propositions */
.value-propositions {
    display: grid;
    gap: 1.5rem;
    margin: 2rem 0;
}

.value-prop {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-card);
    border-radius: 10px;
    box-shadow: 0 5px 15px var(--shadow-light);
    transition: transform 0.3s ease;
}

.value-prop:hover {
    transform: translateY(-5px);
}

.value-icon {
    width: 50px;
    height: 50px;
    border-radius: 10px;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
}

.value-content h4 {
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.value-content p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Services Section */
.services-section {
    background: var(--bg-secondary);
    padding: 100px 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.service-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: 0 10px 40px var(--shadow-light);
    transition: all 0.3s ease;
    position: relative;
    border: 1px solid var(--border-color);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px var(--shadow-medium);
}

.service-card.featured {
    background: var(--gradient-primary);
    color: white;
    transform: scale(1.05);
}

.service-card.featured * {
    color: white !important;
}

.service-badge {
    position: absolute;
    top: -10px;
    right: 20px;
    background: var(--gradient-secondary);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.service-icon {
    width: 60px;
    height: 60px;
    border-radius: 15px;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    color: white;
}

.service-card.featured .service-icon {
    background: rgba(255, 255, 255, 0.2);
}

.service-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

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

.service-features {
    margin-bottom: 1.5rem;
}

.service-features span {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.service-price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-accent);
    text-align: center;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 10px;
    margin-top: auto;
}

.service-card.featured .service-price {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

/* Testimonials Section */
.testimonials-section {
    padding: 100px 0;
    background: var(--bg-primary);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.testimonial-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: 0 10px 40px var(--shadow-light);
    transition: transform 0.3s ease;
    border: 1px solid var(--border-color);
}

.testimonial-card:hover {
    transform: translateY(-5px);
}

.testimonial-content {
    margin-bottom: 1.5rem;
}

.stars {
    display: flex;
    gap: 0.25rem;
    margin-bottom: 1rem;
    color: #ffd700;
}

.testimonial-content p {
    font-style: italic;
    color: var(--text-secondary);
    line-height: 1.6;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
}

.author-info h4 {
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.author-info span {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Contact Section Updates */
.availability-status {
    margin: 1.5rem 0;
    padding: 1rem;
    background: var(--bg-card);
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.status-dot.available {
    background: #10b981;
    animation: pulse 2s infinite;
}

.response-time {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

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

.contact-form select {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    background: var(--bg-card);
    color: var(--text-primary);
    font-family: inherit;
    transition: border-color 0.3s ease;
}

.contact-form select:focus {
    outline: none;
    border-color: var(--text-accent);
}

/* Footer */
.footer {
    background: var(--bg-primary);
    color: var(--text-secondary);
    padding: 30px 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-text p {
    margin-bottom: 5px;
    color: var(--text-secondary);
}

.footer-links a {
    color: var(--text-accent);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

/* Theme Toggle Button */
.theme-toggle {
    background: none;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-primary);
    transition: all 0.3s ease;
    margin-right: 15px;
}

.theme-toggle:hover {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
}

/* Navigation Updates */
.nav-controls {
    display: flex;
    align-items: center;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
        padding: 10px;
        margin: -10px;
        min-width: 44px;
        min-height: 44px;
        align-items: center;
        justify-content: center;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: var(--bg-card);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px var(--shadow-light);
        padding: 20px 0;
        border: 1px solid var(--border-color);
        border-top: none;
        z-index: 999;
        max-height: calc(100vh - 70px);
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-link {
        padding: 15px 0;
        display: block;
        color: var(--text-primary);
        font-size: 1rem;
        min-height: 44px;
        min-width: 44px;
    }
    
    .logo-text-container {
        display: none;
    }
    
    .logo-icon {
        margin-right: 0;
    }
    
    .nav-controls {
        margin-right: 10px;
    }
    
    .theme-toggle {
        width: 35px;
        height: 35px;
        margin-right: 10px;
    }
    
    /* Hero Section Mobile */
    .hero {
        padding-top: 70px;
        min-height: 90vh;
        padding-left: 15px;
        padding-right: 15px;
    }
    
    .hero-container {
        padding: 0 15px;
        max-width: 100%;
        overflow-x: hidden;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 2.2rem;
        line-height: 1.1;
        margin-bottom: 1rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
        margin-bottom: 0.75rem;
    }
    
    .hero-description {
        font-size: 1rem;
        margin-bottom: 1.5rem;
        padding: 0 10px;
    }
    
    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
        gap: 0.75rem;
    }
    
    .btn-primary, .btn-secondary {
        padding: 12px 24px;
        font-size: 0.9rem;
        min-width: 140px;
        min-height: 44px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1rem;
        margin: 2rem 0 1.5rem;
    }
    
    .hero-stat {
        padding: 1rem;
        background: rgba(255, 255, 255, 0.15);
        border-radius: 10px;
        backdrop-filter: blur(10px);
    }
    
    .hero-visual {
        order: -1;
        margin-bottom: 1rem;
    }
    
    .code-block {
        max-width: 320px;
        margin: 0 auto;
        animation-duration: 4s;
    }
    
    .code-content {
        padding: 15px;
        font-size: 0.8rem;
    }
    
    /* Sections Mobile */
    .section {
        padding: 80px 0 60px 0;
    }
    
    .container {
        padding: 0 15px;
        max-width: 100%;
        overflow-x: hidden;
    }
    
    .section-title {
        font-size: 1.8rem;
        margin-bottom: 10px;
    }
    
    .section-description {
        font-size: 1rem;
        padding: 0 10px;
    }
    
    .section-header {
        margin-bottom: 40px;
    }
    
    /* About Section Mobile */
    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .about-text h3 {
        font-size: 1.3rem;
    }
    
    .about-text p {
        font-size: 1rem;
        margin-bottom: 1.25rem;
        padding: 0 10px;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
        margin-top: 2rem;
    }
    
    .stat-item {
        padding: 15px;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .value-propositions {
        gap: 1rem;
        margin: 2rem 0;
    }
    
    .value-prop {
        padding: 1rem;
        text-align: left;
    }
    
    .value-icon {
        width: 45px;
        height: 45px;
        font-size: 1.1rem;
    }
    
    .image-placeholder {
        width: 200px;
        height: 200px;
        font-size: 4rem;
        animation-duration: 4s;
    }
    
    .profile-image {
        width: 240px;
        height: 240px;
        border-width: 3px;
    }
    
    .profile-image:hover {
        transform: scale(1.02);
    }
    
    /* Services Mobile */
    .services-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .service-card {
        padding: 1.5rem;
        margin-bottom: 1rem;
    }
    
    .service-card.featured {
        transform: none;
    }
    
    .service-icon {
        width: 55px;
        height: 55px;
        font-size: 1.3rem;
    }
    
    .service-card h3 {
        font-size: 1.2rem;
    }
    
    .service-features span {
        font-size: 0.85rem;
    }
    
    .service-price {
        font-size: 1.1rem;
        padding: 0.75rem;
    }
    
    /* Projects Mobile */
    .projects-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .project-card {
        padding: 20px;
        margin-bottom: 1rem;
    }
    
    .project-header {
        margin-bottom: 15px;
    }
    
    .project-icon {
        width: 45px;
        height: 45px;
        font-size: 1.3rem;
    }
    
    .project-card h3 {
        font-size: 1.2rem;
        margin-bottom: 12px;
    }
    
    .project-card p {
        font-size: 0.95rem;
        margin-bottom: 15px;
        line-height: 1.6;
    }
    
    .project-tech {
        gap: 6px;
        margin-bottom: 12px;
    }
    
    .tech-tag {
        padding: 5px 10px;
        font-size: 0.75rem;
        font-weight: 600;
    }
    
    .project-categories {
        flex-wrap: wrap;
        gap: 10px;
        margin-bottom: 30px;
    }
    
    .category-btn {
        padding: 8px 16px;
        font-size: 0.85rem;
        min-height: 44px;
        min-width: 44px;
    }
    
    /* Testimonials Mobile */
    .testimonials-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .testimonial-card {
        padding: 1.5rem;
    }
    
    .testimonial-content p {
        font-size: 0.95rem;
        line-height: 1.6;
    }
    
    .author-avatar {
        width: 45px;
        height: 45px;
        font-size: 1.1rem;
    }
    
    /* Contact Mobile */
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-info h3 {
        font-size: 1.3rem;
    }
    
    .contact-info p {
        font-size: 0.95rem;
        padding: 0 10px;
    }
    
    .contact-item {
        margin-bottom: 15px;
    }
    
    .contact-icon {
        width: 45px;
        height: 45px;
        margin-right: 15px;
        font-size: 1.1rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .form-group {
        margin-bottom: 15px;
    }
    
    .form-group input,
    .form-group textarea,
    .contact-form select {
        padding: 12px;
        font-size: 16px; /* Prevents zoom on iOS */
        -webkit-appearance: none;
        appearance: none;
    }
    
    .contact-form h3 {
        font-size: 1.3rem;
        margin-bottom: 20px;
    }
    
    .availability-status {
        margin: 1rem 0;
        padding: 0.75rem;
    }
    
    .social-links {
        justify-content: center;
        gap: 12px;
    }
    
    .social-link {
        width: 40px;
        height: 40px;
    }
    
    /* Footer */
    .footer {
        padding: 25px 0;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .footer-text p {
        font-size: 0.9rem;
        margin-bottom: 5px;
    }
    
    /* Timeline Mobile */
    .timeline::before {
        left: 15px;
    }
    
    .timeline-dot {
        left: 6px;
        width: 18px;
        height: 18px;
    }
    
    .timeline-content {
        margin-left: 45px;
        padding: 20px;
    }
    
    .timeline-content h3 {
        font-size: 1.2rem;
    }
    
    /* Performance optimizations */
    .floating-elements {
        animation-duration: 15s;
    }
    
    /* Smooth scrolling improvements */
    body {
        -webkit-overflow-scrolling: touch;
    }
    
    /* Dark mode adjustments */
    [data-theme="dark"] .hero-stat {
        background: rgba(255, 255, 255, 0.1);
        backdrop-filter: blur(10px);
    }
    
    [data-theme="dark"] .nav-menu {
        background: rgba(30, 41, 59, 0.95);
        backdrop-filter: blur(10px);
    }
    
    /* Focus indicators */
    .btn-primary:focus,
    .btn-secondary:focus,
    .category-btn:focus,
    .nav-link:focus,
    .show-more-btn:focus {
        outline: 3px solid var(--text-accent);
        outline-offset: 2px;
    }
}

@media (max-width: 480px) {
    /* Extra small screens */
    .hero {
        min-height: 85vh;
        padding-top: 70px;
    }
    
    .hero-title {
        font-size: 1.8rem;
        line-height: 1.1;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-description {
        font-size: 0.95rem;
        padding: 0 5px;
    }
    
    .btn-primary, .btn-secondary {
        padding: 10px 20px;
        font-size: 0.85rem;
        min-width: 120px;
        width: 100%;
        max-width: 200px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
    }
    
    .code-block {
        max-width: 280px;
    }
    
    .code-header {
        padding: 12px 15px;
        font-size: 0.8rem;
    }
    
    .code-content {
        padding: 12px;
        font-size: 0.75rem;
    }
    
    .section {
        padding: 60px 0 40px 0;
}
/* Hide floating elements on very small screens */
@media (max-width: 480px) {
    .floating-elements {
        display: none;
    }
    .scroll-indicator {
        bottom: 20px;
    }
    .mouse {
        width: 20px;
        height: 35px;
    }
    .wheel {
        width: 2px;
        height: 5px;
    }
    .footer-text p {
        font-size: 0.85rem;
        margin-bottom: 3px;
    }
}
/* Landscape phones */
@media (max-width: 768px) and (orientation: landscape) {
    .hero {
        min-height: 100vh;
        padding-top: 60px;
    }
    .hero-content {
        gap: 1.5rem;
    }
    .hero-title {
        font-size: 2rem;
    }
    .section {
        padding: 60px 0 50px 0;
    }
}
/* Touch-friendly improvements */
@media (hover: none) and (pointer: coarse) {
    .btn-primary,
    .btn-secondary,
    .category-btn,
    .show-more-btn,
    .social-link,
    .project-link,
    .nav-link {
        min-height: 44px;
        min-width: 44px;
    }
    /* Remove hover effects on touch devices */
    .project-card:hover,
    .service-card:hover,
    .testimonial-card:hover,
    .value-prop:hover {
        transform: none;
    }
}
/* Mobile viewport units fix */
@supports (-webkit-touch-callout: none) {
    .hero {
        min-height: -webkit-fill-available;
    }
}
/* High DPI screen optimizations */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .logo-icon svg,
    .service-icon,
    .project-icon,
    .contact-icon {
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
}
/* Ensure form buttons get gradient styling */
button.btn-primary,
input[type="submit"].btn-primary,
.contact-form button[type="submit"] {
    background: var(--gradient-primary) !important;
    background-size: 200% 200% !important;
    color: #fff !important;
    border: none !important;
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    text-align: center;
    position: relative;
    overflow: hidden;
            box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
        }
    }