/* ==========================================
   Modern Portfolio - CSS
   Full Stack Developer Portfolio
   ========================================== */

/* ==========================================
   1. Reset & Base Styles
   ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #10b981;
    --accent-color: #f59e0b;
    
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-dark: #111827;
    --bg-darker: #0a0e1a;
    
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-success: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'Courier New', monospace;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

::selection {
    background-color: var(--primary-color);
    color: white;
}

/* ==========================================
   2. Typography
   ========================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }

p {
    color: var(--text-secondary);
    line-height: 1.8;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-normal);
}

/* ==========================================
   3. Layout Utilities
   ========================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
}

/* ==========================================
   4. Navigation
   ========================================== */
.floating-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.floating-nav.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.nav-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.75rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    transition: var(--transition-fast);
}

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

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

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

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: var(--radius-full);
    transition: var(--transition-normal);
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: flex;
    }
    
    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 2rem;
        gap: 1rem;
        box-shadow: var(--shadow-lg);
        transform: translateY(-150%);
        opacity: 0;
        pointer-events: none;
        transition: var(--transition-normal);
    }
    
    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }
}

/* ==========================================
   5. Hero Section
   ========================================== */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 6rem 2rem 4rem;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    z-index: -1;
}

.gradient-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, rgba(10, 14, 26, 0.8) 0%, rgba(17, 24, 39, 0.95) 100%);
}

.animated-shapes {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    animation: float 20s infinite ease-in-out;
}

.shape-1 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    top: 60%;
    right: 20%;
    animation-delay: 2s;
}

.shape-3 {
    width: 250px;
    height: 250px;
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    bottom: 10%;
    left: 30%;
    animation-delay: 4s;
}

.shape-4 {
    width: 180px;
    height: 180px;
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    top: 30%;
    right: 10%;
    animation-delay: 6s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    25% {
        transform: translate(30px, -30px) scale(1.1);
    }
    50% {
        transform: translate(-20px, 20px) scale(0.9);
    }
    75% {
        transform: translate(20px, 30px) scale(1.05);
    }
}

.hero-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text {
    color: white;
}

.hero-greeting {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--primary-light);
    margin-bottom: 1rem;
}

.hero-name {
    font-size: clamp(3rem, 6vw, 4.5rem);
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #ffffff 0%, #a5b4fc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-title-wrapper {
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 600;
    color: var(--primary-light);
}

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

.cursor {
    animation: blink 1s infinite;
}

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

.hero-description {
    font-size: 1.125rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2rem;
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

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

.social-link {
    width: 45px;
    height: 45px;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    transition: var(--transition-normal);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.social-link:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.hero-visual {
    position: relative;
}

.code-window {
    background: rgba(17, 24, 39, 0.9);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-2xl);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.window-header {
    background: rgba(31, 41, 55, 0.8);
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.window-buttons {
    display: flex;
    gap: 0.5rem;
}

.window-buttons span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.btn-close { background: #ff5f56; }
.btn-minimize { background: #ffbd2e; }
.btn-maximize { background: #27c93f; }

.window-title {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
}

.code-content {
    padding: 1.5rem;
    color: #e5e7eb;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 1.8;
    position: relative;
}

.code-keyword { color: #c678dd; }
.code-variable { color: #e06c75; }
.code-property { color: #d19a66; }
.code-string { color: #98c379; }
.code-function { color: #61afef; }

.code-line {
    display: block;
    opacity: 0;
    animation: typeIn 0.5s ease forwards;
}

.editable-text {
    cursor: text;
    transition: all 0.2s ease;
    border-radius: 3px;
    padding: 2px 4px;
    margin: 0 -2px;
}

.editable-text:hover {
    background: rgba(99, 102, 241, 0.2);
    box-shadow: 0 0 0 1px rgba(99, 102, 241, 0.3);
}

.editable-text.editing {
    background: rgba(99, 102, 241, 0.15);
    outline: 2px solid #667eea;
    outline-offset: 2px;
}

.code-line-skills .skill-item:hover {
    background: rgba(99, 102, 241, 0.15);
}

.code-line:nth-child(1) { animation-delay: 0.3s; }
.code-line:nth-child(2) { animation-delay: 0.6s; }
.code-line:nth-child(3) { animation-delay: 0.9s; }
.code-line:nth-child(4) { animation-delay: 1.2s; }
.code-line:nth-child(5) { animation-delay: 1.5s; }
.code-line:nth-child(6) { animation-delay: 1.8s; }
.code-line:nth-child(7) { animation-delay: 2.1s; }
.code-line:nth-child(8) { animation-delay: 2.4s; }
.code-line:nth-child(9) { animation-delay: 2.7s; }
.code-line:nth-child(10) { animation-delay: 3.0s; }
.code-line:nth-child(11) { animation-delay: 3.3s; }
.code-line:nth-child(12) { animation-delay: 3.6s; }
.code-line:nth-child(13) { animation-delay: 3.9s; }
.code-line:nth-child(14) { animation-delay: 4.2s; }
.code-line:nth-child(15) { animation-delay: 4.5s; }

@keyframes typeIn {
    0% {
        opacity: 0;
        transform: translateX(-10px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

.code-line-edit {
    cursor: pointer;
    transition: all 0.3s ease;
    color: rgba(148, 163, 184, 0.6);
    position: relative;
}

.code-line-edit:hover {
    color: #fff;
    transform: translateX(5px);
}

.code-line-edit:hover::before {
    content: '✨ ';
    animation: sparkle 0.5s ease;
}

@keyframes sparkle {
    0%, 100% {
        transform: scale(1);
        opacity: 0;
    }
    50% {
        transform: scale(1.5) rotate(180deg);
        opacity: 1;
    }
}

.code-line-edit::after {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.code-line-edit:hover::after {
    opacity: 1;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    0% {
        height: 0;
    }
    100% {
        height: 100%;
    }
}

/* Delete button for existing skills */
.code-skill-item {
    position: relative;
    display: inline-block;
    padding: 2px 4px;
    margin: 0 2px;
    border-radius: 3px;
    transition: all 0.3s ease;
}

.code-skill-item:hover {
    background: rgba(255, 82, 82, 0.2);
}

.code-skill-item::after {
    content: ' 🗑️';
    opacity: 0;
    transition: opacity 0.3s ease;
    cursor: pointer;
}

.code-skill-item:hover::after {
    opacity: 1;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
}

.mouse {
    width: 28px;
    height: 45px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 15px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

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

@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .hero-visual {
        order: -1;
    }
}

@media (max-width: 768px) {
    .hero-section {
        padding: 5rem 1rem 3rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
}

/* ==========================================
   6. Buttons
   ========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: var(--transition-normal);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* ==========================================
   7. Section Headers
   ========================================== */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
    position: relative;
    z-index: 2;
}

.section-tag {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    color: var(--primary-color);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.875rem;
    margin-bottom: 1rem;
    letter-spacing: 0.5px;
}

.section-title {
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Services section header styling */
.services-section .section-header p {
    color: #a5b4fc;
    opacity: 0.72;
}

.services-section .section-tag {
    background: rgba(99, 102, 241, 0.2);
    color: #4f46e5;
}

/* ==========================================
   8. Section Background Patterns
   ========================================== */
.section-with-background {
    position: relative;
    overflow: hidden;
}

.section-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.section-gradient-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, rgba(10, 14, 26, 0.85) 0%, rgba(17, 24, 39, 0.95) 100%);
}

.section-animated-shapes {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

.section-shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.08;
    animation: float 20s infinite ease-in-out;
}

.section-shape-1 {
    width: 250px;
    height: 250px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.section-shape-2 {
    width: 180px;
    height: 180px;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    top: 60%;
    right: 15%;
    animation-delay: 3s;
}

.section-shape-3 {
    width: 220px;
    height: 220px;
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    bottom: 10%;
    left: 25%;
    animation-delay: 5s;
}

.section-shape-4 {
    width: 160px;
    height: 160px;
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    top: 30%;
    right: 8%;
    animation-delay: 7s;
}

.section-content-wrapper {
    position: relative;
    z-index: 1;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ==========================================
   9. About Section
   ========================================== */
.about-section {
    padding: 6rem 0;
    position: relative;
    overflow: hidden;
}

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

.about-image {
    position: relative;
}

.image-frame {
    position: relative;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.image-frame img {
    width: 100%;
    height: auto;
    display: block;
}

.image-decoration {
    position: absolute;
    top: -20px;
    right: -20px;
    width: 100%;
    height: 100%;
    border: 3px solid var(--primary-color);
    border-radius: var(--radius-2xl);
    z-index: -1;
}

.floating-card {
    position: absolute;
    bottom: 2rem;
    right: -2rem;
    background: white;
    padding: 1.5rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: 1rem;
    animation: float-card 3s infinite ease-in-out;
}

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

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

.card-info h4 {
    font-size: 1.75rem;
    margin-bottom: 0.25rem;
}

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

.about-text h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.about-text p {
    margin-bottom: 1.5rem;
}

.about-highlights {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin: 2rem 0;
}

.highlight-item {
    display: flex;
    gap: 1rem;
    align-items: start;
}

.highlight-item i {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.25rem;
    flex-shrink: 0;
}

.highlight-item h4 {
    font-size: 1.125rem;
    margin-bottom: 0.25rem;
}

.highlight-item p {
    font-size: 0.875rem;
    margin: 0;
}

@media (max-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

/* ==========================================
   Services Section with Hero Background
   ========================================== */
.services-section {
    padding: 6rem 0;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #111827 0%, #1f2937 50%, #374151 100%);
}

.services-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 2px 2px, rgba(99, 102, 241, 0.15) 1px, transparent 0),
        radial-gradient(circle at 30px 30px, rgba(139, 92, 246, 0.1) 1px, transparent 0);
    background-size: 50px 50px, 80px 80px;
    opacity: 0.3;
    z-index: 0;
}

.services-section .container {
    position: relative;
    z-index: 1;
}

.services-section > div {
    position: relative;
    z-index: 2;
}

/* Floating particles effect for services */
.services-section::after {
    content: '';
    position: absolute;
    top: 20%;
    right: 10%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.2) 0%, transparent 70%);
    filter: blur(60px);
    animation: pulse-glow 8s ease-in-out infinite;
    z-index: 0;
}

@keyframes pulse-glow {
    0%, 100% {
        transform: scale(1);
        opacity: 0.2;
    }
    50% {
        transform: scale(1.2);
        opacity: 0.4;
    }
}

.service-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.05) 100%);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 2rem;
    padding: 2.5rem 1.5rem;
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2) 0%, rgba(139, 92, 246, 0.1) 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: -1;
}

.service-card:hover::before {
    opacity: 1;
}

.service-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.3),
                0 0 0 1px rgba(255, 255, 255, 0.2);
    border-color: rgba(99, 102, 241, 0.3);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2.5rem;
}

@media (max-width: 900px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .services-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}


.service-icon {
    font-size: 2.75rem;
    color: #5eead4;
    background: linear-gradient(130deg, #6366f1 60%, #232344 100%);
    border-radius: 1.25rem;
    width: 68px;
    height: 68px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(96, 165, 250, 0.2);
    margin-bottom: 1.5rem;
}

.service-title {
    font-size: 1.25rem;
    color: #c7cfff;
    margin-bottom: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-align: center;
}

.service-desc {
    color: #bfdbfe;
    font-size: 0.98rem;
    letter-spacing: 0.1px;
    text-align: center;
    opacity: 0.84;
    font-weight: 500;
    line-height: 1.6;
}

/* Contact Section with Hero Background */
.contact-section-with-background {
    position: relative;
    overflow: hidden;
    padding: 6rem 0;
    background: linear-gradient(135deg, #0f0f20 0%, #1a1a34 50%, #232344 100%);
}

.contact-section-with-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: radial-gradient(circle at 1px 1px, rgba(148, 163, 184, 0.15) 1px, transparent 0);
    background-size: 20px 20px;
    opacity: 0.3;
    z-index: 0;
}

.contact-section-with-background::after {
    content: '';
    position: absolute;
    top: 30%;
    right: 15%;
    width: 120px;
    height: 120px;
    background: radial-gradient(circle, rgba(129, 140, 248, 0.3) 0%, transparent 70%);
    filter: blur(40px);
    animation: float-pulse 6s ease-in-out infinite;
    z-index: 0;
}

@keyframes float-pulse {
    0%, 100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.3;
    }
    50% {
        transform: translate(30px, -30px) scale(1.2);
        opacity: 0.5;
    }
}

/* Additional floating dots */
.contact-section-with-background .floating-dot {
    position: absolute;
    border-radius: 50%;
    background: rgba(99, 102, 241, 0.3);
    animation: float-dot 15s infinite ease-in-out;
    z-index: 0;
}

.contact-section-with-background .floating-dot:nth-child(1) {
    width: 80px;
    height: 80px;
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.contact-section-with-background .floating-dot:nth-child(2) {
    width: 60px;
    height: 60px;
    bottom: 15%;
    right: 10%;
    animation-delay: 3s;
}

.contact-section-with-background .floating-dot:nth-child(3) {
    width: 100px;
    height: 100px;
    top: 50%;
    left: 5%;
    animation-delay: 6s;
}

@keyframes float-dot {
    0%, 100% {
        transform: translate(0, 0);
        opacity: 0.3;
    }
    25% {
        transform: translate(20px, -30px);
        opacity: 0.5;
    }
    50% {
        transform: translate(-15px, 20px);
        opacity: 0.4;
    }
    75% {
        transform: translate(25px, 15px);
        opacity: 0.6;
    }
}

/* ==========================================
   9. Skills Section
   ========================================== */
.skills-section {
    padding: var(--spacing-xl) 0;
    background: white;
}

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

.skill-category {
    background: white;
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid #f3f4f6;
    transition: var(--transition-normal);
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.category-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.category-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.75rem;
}

.category-header h3 {
    font-size: 1.5rem;
}

.skill-items {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.skill-item {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.skill-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    flex-shrink: 0;
    box-shadow: var(--shadow-md);
}

.skill-info {
    flex: 1;
}

.skill-info h4 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.skill-bar {
    width: 100%;
    height: 8px;
    background: #f3f4f6;
    border-radius: var(--radius-full);
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transition: width 1s ease;
    width: 0;
}

@media (max-width: 768px) {
    .skills-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================
   10. Projects Section
   ========================================== */
.projects-section {
    padding: var(--spacing-xl) 0;
    background: var(--bg-secondary);
}

.projects-filter {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.75rem 1.5rem;
    border: 2px solid #e5e7eb;
    background: white;
    border-radius: var(--radius-lg);
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-normal);
}

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

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

.project-card {
    background: white;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    opacity: 1;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.project-card.hidden {
    display: none;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.project-image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16 / 10;
}

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

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

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(102, 126, 234, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-normal);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-link {
    width: 60px;
    height: 60px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.5rem;
    transform: scale(0.8);
    transition: var(--transition-normal);
}

.project-card:hover .project-link {
    transform: scale(1);
}

.project-content {
    padding: 1.5rem;
}

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

.tag {
    padding: 0.25rem 0.75rem;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    color: var(--primary-color);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.project-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.project-content p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.project-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    border-top: 1px solid #f3f4f6;
}

.project-github,
.project-demo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    font-size: 0.9375rem;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.project-github:hover {
    color: var(--text-primary);
}

.project-demo {
    color: var(--primary-color);
}

.project-demo:hover {
    gap: 0.75rem;
}

@media (max-width: 768px) {
    .projects-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================
   11. Contact Section
   ========================================== */
.contact-section {
    padding: var(--spacing-xl) 0;
    background: white;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
}

.contact-info h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.contact-info > p {
    margin-bottom: 2rem;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.contact-method {
    display: flex;
    gap: 1rem;
    align-items: start;
}

.method-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.25rem;
    flex-shrink: 0;
}

.method-info h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.method-info a,
.method-info p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    transition: var(--transition-fast);
    margin: 0;
}

.method-info a:hover {
    color: var(--primary-color);
}

.contact-social {
    padding-top: 2rem;
    border-top: 1px solid #f3f4f6;
}

.contact-social h4 {
    margin-bottom: 1rem;
}

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

.social-link-large {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    transition: var(--transition-normal);
}

.social-link-large:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.contact-form-wrapper {
    background: var(--bg-secondary);
    padding: 2.5rem;
    border-radius: var(--radius-xl);
}

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

.form-group {
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    border: 2px solid #e5e7eb;
    border-radius: var(--radius-lg);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition-fast);
    background: white;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-icon {
    position: absolute;
    left: 1rem;
    top: 2.75rem;
    color: var(--text-light);
    pointer-events: none;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

@media (max-width: 1024px) {
    .contact-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

/* ==========================================
   12. Footer
   ========================================== */
.footer {
    padding: 2rem 0;
    background: var(--bg-dark);
    color: rgba(255, 255, 255, 0.8);
}

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

.footer-text p {
    margin: 0;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: white;
}

@media (max-width: 768px) {
    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* ==========================================
   13. Back to Top Button
   ========================================== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-normal);
    z-index: 999;
}

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

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

/* ==========================================
   14. Animations & Utilities
   ========================================== */
.fade-in {
    animation: fadeIn 0.6s ease forwards;
}

.slide-up {
    animation: slideUp 0.6s ease forwards;
}

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

/* Scroll animations */
[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate].animated {
    opacity: 1;
    transform: translateY(0);
}

/* Loading state */
.loading {
    pointer-events: none;
    opacity: 0.6;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 30px;
    height: 30px;
    border: 3px solid rgba(102, 126, 234, 0.3);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: translate(-50%, -50%) rotate(360deg); }
}