/* ===================================
   CSS VARIABLES & RESET
   =================================== */

:root {
    /* Colors */
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #ec4899;
    --accent-color: #14b8a6;
    
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    
    --border-color: #e5e7eb;
    --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);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-heading: 'Playfair Display', Georgia, serif;
    
    /* Spacing */
    --section-padding: 120px 0;
    --container-padding: 0 20px;
    --container-max-width: 1200px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
}

/* Dark Theme */
body.dark-theme {
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-light: #9ca3af;
    
    --bg-primary: #111827;
    --bg-secondary: #1f2937;
    --bg-tertiary: #374151;
    
    --border-color: #374151;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
}

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

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;
    transition: background-color var(--transition-base), color var(--transition-base);
}

/* ===================================
   LOADING SCREEN
   =================================== */

#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

#loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===================================
   NAVIGATION
   =================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all var(--transition-base);
}

body.dark-theme .navbar {
    background: rgba(17, 24, 39, 0.95);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
    padding: 0;
}

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

.logo {
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    transition: transform var(--transition-fast);
}

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

.logo-text {
    font-family: var(--font-heading);
}

.brand-color {
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding: 0.5rem 0;
    transition: color var(--transition-fast);
}

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

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

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

.theme-toggle {
    background: none;
    border: 2px solid var(--border-color);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-primary);
    transition: all var(--transition-base);
}

.theme-toggle:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: rotate(180deg);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

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

/* ===================================
   UTILITY CLASSES
   =================================== */

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--container-padding);
}

.section-header {
    text-align: center;
    margin-bottom: 5rem;
    position: relative;
}

.section-subtitle {
    color: var(--primary-color);
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 1rem;
    display: inline-block;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.title-underline {
    width: 100px;
    height: 5px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    margin: 1.5rem auto;
    border-radius: 3px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2.25rem;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    border: 2px solid transparent;
    transition: all var(--transition-base);
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    box-shadow: 0 10px 20px -5px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px -5px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-3px);
}

/* ===================================
   HERO SECTION
   =================================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 140px 20px 100px;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
}

.hero-particles {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(236, 72, 153, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(20, 184, 166, 0.12) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-30px) scale(1.05); }
}

.hero-content {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 5rem;
    align-items: center;
    position: relative;
    z-index: 1;
    max-width: 1400px;
    margin: 0 auto;
}

.greeting {
    font-size: 1.125rem;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 4rem;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.role-wrapper {
    min-height: 70px;
    margin-bottom: 2rem;
}

.hero-subtitle {
    font-size: 2.25rem;
    color: var(--text-primary);
    font-weight: 600;
}

.typing-text {
    color: var(--primary-color);
    font-weight: 700;
}

.cursor {
    color: var(--primary-color);
    animation: blink 1s infinite;
}

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

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 600px;
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: 1.25rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.social-links {
    display: flex;
    gap: 1.25rem;
}

.social-links a {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 1.25rem;
    transition: all var(--transition-base);
    border: 2px solid var(--border-color);
}

.social-links a:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.hero-image {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-wrapper {
    position: relative;
    width: 100%;
    max-width: 420px;
    margin: 0 auto;
}

.profile-img {
    width: 100%;
    height: auto;
    border-radius: 30px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    position: relative;
    z-index: 2;
    object-fit: contain;
    object-position: center;
    border: 4px solid transparent;
    max-height: 560px;
}

.image-decoration {
    position: absolute;
    top: 30px;
    left: 30px;
    width: 100%;
    height: 100%;
    border: 3px solid var(--primary-color);
    border-radius: 30px;
    z-index: 1;
    opacity: 0.5;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
}

.scroll-down {
    display: block;
    width: 30px;
    height: 50px;
    border: 2px solid var(--primary-color);
    border-radius: 20px;
    position: relative;
}

.scroll-down span {
    position: absolute;
    width: 6px;
    height: 6px;
    background: var(--primary-color);
    border-radius: 50%;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

.scroll-down span:nth-child(1) {
    top: 10px;
}

.scroll-down span:nth-child(2) {
    top: 20px;
    animation-delay: 0.2s;
}

.scroll-down span:nth-child(3) {
    top: 30px;
    animation-delay: 0.4s;
}

@keyframes scroll {
    0% { opacity: 0; }
    50% { opacity: 1; }
    100% { opacity: 0; transform: translateY(10px) translateX(-50%); }
}

/* ===================================
   ABOUT SECTION
   =================================== */

.about {
    padding: var(--section-padding);
    background: var(--bg-primary);
    position: relative;
}

.about-content {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 5rem;
    align-items: center;
}

.about-image {
    position: relative;
}

.about-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.2);
    border: 4px solid var(--bg-secondary);
}

.tech-illustration {
    width: 100%;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.2);
    border: 4px solid var(--bg-secondary);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.tech-illustration svg {
    width: 100%;
    height: auto;
    display: block;
}

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

.stat-item {
    text-align: center;
    padding: 1.75rem 1rem;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 2px solid var(--border-color);
}

.stat-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 30px -10px rgba(99, 102, 241, 0.3);
    border-color: var(--primary-color);
}

.stat-number {
    font-size: 2.75rem;
    font-weight: 800;
    color: var(--primary-color);
    font-family: var(--font-heading);
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.75rem;
    font-weight: 500;
}

.about-text h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    line-height: 1.3;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
    font-size: 1.05rem;
}

.about-highlights {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
    margin: 2.5rem 0;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.5rem 0;
}

.highlight-item i {
    color: var(--accent-color);
    font-size: 1.25rem;
    flex-shrink: 0;
}

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

/* Certifications */
.certifications {
    margin: 2rem 0;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-color);
}

.certifications h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.certifications h4 i {
    color: var(--primary-color);
    font-size: 1.3rem;
}

.cert-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, #FF9900, #FF6600);
    color: white;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.cert-badge:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.cert-badge i {
    font-size: 1.5rem;
}

/* ===================================
   SKILLS SECTION
   =================================== */

.skills {
    padding: var(--section-padding);
    background: var(--bg-secondary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
    gap: 2.5rem;
}

.skill-category {
    background: var(--bg-primary);
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 2px solid var(--border-color);
}

.skill-category:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px -10px rgba(99, 102, 241, 0.3);
    border-color: var(--primary-light);
}

.category-header {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    margin-bottom: 2.5rem;
    padding-bottom: 1.25rem;
    border-bottom: 2px solid var(--border-color);
}

.category-header i {
    font-size: 2.25rem;
    color: var(--primary-color);
}

.category-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Skill Items Grid with Icons */
.skill-items-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(145px, 1fr));
    gap: 1.25rem;
}

.skill-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1.5rem 1rem;
    background: var(--bg-secondary);
    border-radius: 12px;
    transition: all var(--transition-base);
    border: 2px solid transparent;
    text-align: center;
    min-height: 110px;
}

.skill-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
    background: var(--bg-primary);
}

.skill-item i {
    font-size: 2.75rem;
    margin-bottom: 0.85rem;
    transition: transform var(--transition-base);
}

.skill-item:hover i {
    transform: scale(1.15);
}

.skill-item span {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.3;
}

/* Dark theme adjustments for icons */
body.dark-theme .skill-item i {
    filter: brightness(1.2);
}

.skill-bar {
    margin-bottom: 1.5rem;
}

.skill-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.skill-percentage {
    color: var(--primary-color);
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 10px;
    overflow: hidden;
}

.progress {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 10px;
    width: 0;
    transition: width 1.5s ease;
}

.skill-bar:hover .progress {
    width: var(--width) !important;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.skill-tag {
    padding: 0.5rem 1rem;
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    transition: all var(--transition-base);
    border: 2px solid transparent;
}

.skill-tag:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.soft-skills {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.soft-skill-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
}

.soft-skill-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.skill-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    color: white;
    font-size: 1.5rem;
}

.soft-skill-item h4 {
    font-size: 1rem;
    font-weight: 600;
}

/* ===================================
   EXPERIENCE SECTION
   =================================== */

.experience {
    padding: var(--section-padding);
    background: var(--bg-secondary);
}

.timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

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

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.timeline-item:nth-child(odd) .timeline-content {
    grid-column: 1;
}

.timeline-item:nth-child(even) .timeline-content {
    grid-column: 2;
}

.timeline-dot {
    position: absolute;
    left: 50%;
    top: 0;
    transform: translateX(-50%);
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border: 4px solid var(--bg-primary);
    border-radius: 50%;
    z-index: 2;
    box-shadow: var(--shadow-md);
}

.timeline-content {
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.timeline-date {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.timeline-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.timeline-content h4 {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.timeline-content p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.achievement-list {
    list-style: none;
    margin: 1.5rem 0;
}

.achievement-list li {
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    position: relative;
    color: var(--text-secondary);
}

.achievement-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.tech-stack span {
    padding: 0.25rem 0.75rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ===================================
   PROJECTS SECTION
   =================================== */

.projects {
    padding: var(--section-padding);
    background: var(--bg-secondary);
}

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

.filter-btn {
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--border-color);
    background: transparent;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    color: var(--text-primary);
}

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

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 2.5rem;
}

.project-card {
    background: var(--bg-primary);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 2px solid var(--border-color);
}

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

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px -10px rgba(99, 102, 241, 0.3);
    border-color: var(--primary-light);
}

.project-image {
    position: relative;
    overflow: hidden;
    height: 260px;
    background: var(--bg-secondary);
}

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

.order-management-image img {
    object-fit: contain;
    object-position: center;
    background: #f5f5f5;
}

.infra-manager-image img {
    object-fit: contain;
    object-position: center;
}

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

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.95), rgba(236, 72, 153, 0.95));
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

.project-link {
    width: 55px;
    height: 55px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.3rem;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-lg);
}

.project-link:hover {
    transform: scale(1.15) rotate(5deg);
}

.project-content {
    padding: 2rem;
}

.project-tags {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
    flex-wrap: wrap;
}

.project-tags span {
    padding: 0.4rem 0.85rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.project-content h3 {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
    line-height: 1.3;
}

.project-content p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 0.95rem;
}

/* ===================================
   TESTIMONIALS SECTION
   =================================== */

.testimonials {
    padding: var(--section-padding);
    background: var(--bg-secondary);
}

.testimonials-slider {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    overflow: hidden;
}

.testimonial-track {
    display: flex;
    gap: 2rem;
    transition: transform var(--transition-slow);
}

.testimonial-card {
    min-width: 100%;
    background: var(--bg-primary);
    padding: 3rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

.testimonial-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.client-image {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--primary-color);
}

.client-info h4 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

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

.testimonial-rating {
    color: #fbbf24;
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
}

.testimonial-text {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.8;
    font-style: italic;
}

.slider-controls {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

.slider-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 2px solid var(--primary-color);
    background: transparent;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base);
}

.slider-btn:hover {
    background: var(--primary-color);
    color: white;
}

.slider-dots {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
}

.slider-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--border-color);
    cursor: pointer;
    transition: all var(--transition-base);
}

.slider-dot.active {
    background: var(--primary-color);
    width: 30px;
    border-radius: 10px;
}

/* ===================================
   CONTACT SECTION
   =================================== */

.contact {
    padding: var(--section-padding);
    background: var(--bg-primary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 5rem;
    align-items: start;
}

.contact-info h3 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    line-height: 1.2;
}

.contact-info > p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 2.5rem;
    font-size: 1.05rem;
}

.contact-details {
    margin-bottom: 2.5rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding: 1.25rem;
    background: var(--bg-secondary);
    border-radius: 12px;
    transition: all var(--transition-base);
}

.contact-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

.contact-icon {
    width: 55px;
    height: 55px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.contact-text h4 {
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 1.05rem;
}

.contact-text a,
.contact-text p {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-base);
}

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

.social-links-contact {
    display: flex;
    gap: 1.25rem;
}

.social-links-contact a {
    width: 50px;
    height: 50px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    font-size: 1.25rem;
    transition: all var(--transition-base);
}

.social-links-contact a:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-5px);
}

.contact-form {
    background: var(--bg-secondary);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--border-color);
    position: relative;
}

/* Disabled Form Styles */
.contact-form-disabled {
    pointer-events: none;
    opacity: 0.4;
}

.form-disabled-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(5px);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    pointer-events: auto;
}

.dark-mode .form-disabled-overlay {
    background: rgba(17, 24, 39, 0.95);
}

.form-disabled-message {
    text-align: center;
    padding: 2.5rem;
    max-width: 450px;
}

.form-disabled-message i {
    font-size: 4rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
    display: inline-block;
    animation: iconPulse 2s ease-in-out infinite;
}

.form-disabled-message h4 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-family: var(--font-heading);
}

.form-disabled-message p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 1.1rem;
    line-height: 1.6;
}

.form-disabled-message .btn {
    margin-top: 0.5rem;
    padding: 1rem 2rem;
    font-size: 1.05rem;
    font-weight: 600;
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
    transition: all var(--transition-base);
}

.form-disabled-message .btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(99, 102, 241, 0.4);
}

.form-disabled-message .btn i {
    font-size: 1.1rem;
    margin-right: 0.5rem;
    background: none;
    -webkit-text-fill-color: white;
    animation: none;
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1.125rem;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: all var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.form-group label {
    position: absolute;
    left: 1.125rem;
    top: 1.125rem;
    color: var(--text-secondary);
    pointer-events: none;
    transition: all var(--transition-base);
}

.form-group input:focus + label,
.form-group textarea:focus + label,
.form-group input:not(:placeholder-shown) + label,
.form-group textarea:not(:placeholder-shown) + label {
    top: -0.75rem;
    left: 0.75rem;
    font-size: 0.85rem;
    color: var(--primary-color);
    background: var(--bg-secondary);
    padding: 0 0.5rem;
}

.form-error {
    color: #ef4444;
    font-size: 0.875rem;
    margin-top: 0.25rem;
    display: none;
}

.form-status {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: var(--radius-sm);
    display: none;
}

.form-status.success {
    background: #d1fae5;
    color: #065f46;
    display: block;
}

.form-status.error {
    background: #fee2e2;
    color: #991b1b;
    display: block;
}

/* ===================================
   FOOTER
   =================================== */

.footer {
    background: var(--bg-secondary);
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand {
    max-width: 350px;
}

.footer-logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-section p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
    font-size: 0.95rem;
}

.footer-section h4 {
    font-weight: 700;
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    color: var(--text-primary);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
}

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

.footer-section ul li a:hover {
    color: var(--primary-color);
}

.footer-social {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.footer-social a {
    width: 40px;
    height: 40px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    transition: all var(--transition-base);
}

.footer-social a:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-3px);
}

.newsletter-form {
    display: flex;
    gap: 0.5rem;
}

.newsletter-form input {
    flex: 1;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-primary);
    color: var(--text-primary);
}

.newsletter-form button {
    padding: 0.75rem 1.5rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-base);
}

.newsletter-form button:hover {
    background: var(--primary-dark);
}

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

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

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-base);
}

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

/* ===================================
   SCROLL TO TOP BUTTON
   =================================== */

.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-lg);
    z-index: 999;
}

.scroll-top.show {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    transform: translateY(-5px);
    background: var(--primary-dark);
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */

@media (max-width: 1024px) {
    :root {
        --section-padding: 80px 0;
    }

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

    .hero-content {
        text-align: center;
    }

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

    .hero-description {
        max-width: 100%;
    }
    
    .hero-image {
        order: -1;
    }
    
    .image-wrapper {
        max-width: 380px;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .about-stats {
        grid-template-columns: repeat(3, 1fr);
    }

    .projects-grid {
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
        gap: 2rem;
    }

    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .timeline::before {
        left: 0;
    }
    
    .timeline-item {
        grid-template-columns: 1fr;
        padding-left: 2rem;
    }
    
    .timeline-item .timeline-content {
        grid-column: 1 !important;
    }
    
    .timeline-dot {
        left: 0;
        transform: translateX(-50%);
    }
}

@media (max-width: 768px) {
    html {
        font-size: 14px;
    }

    :root {
        --section-padding: 60px 0;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--bg-primary);
        flex-direction: column;
        padding: 2rem;
        transition: left var(--transition-base);
        box-shadow: var(--shadow-lg);
        border-top: 1px solid var(--border-color);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

    .section-header {
        margin-bottom: 3rem;
    }
    
    .section-title {
        font-size: 2.25rem;
    }

    .section-subtitle {
        font-size: 0.9rem;
        letter-spacing: 2px;
    }
    
    .hero {
        padding: 120px 20px 60px;
    }

    .hero-title {
        font-size: 3rem;
    }

    .hero-subtitle {
        font-size: 1.75rem;
    }
    
    .hero-cta {
        flex-direction: column;
        width: 100%;
    }

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

    .social-links {
        justify-content: center;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }

    .about-highlights {
        grid-template-columns: 1fr;
    }

    .stat-item {
        padding: 1.5rem;
    }

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

    .skill-items-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }

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

    .contact-content {
        gap: 3rem;
    }

    .contact-form {
        padding: 2rem;
    }

    .contact-item {
        padding: 1rem;
    }
    
    .soft-skills {
        grid-template-columns: 1fr;
    }
    
    .project-filters {
        flex-direction: column;
        align-items: stretch;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .footer-brand {
        max-width: 100%;
        text-align: center;
    }

    .footer-social {
        justify-content: center;
    }

    .footer-section ul li {
        justify-content: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    :root {
        --section-padding: 50px 0;
    }
    
    .hero {
        padding: 100px 15px 50px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.5rem;
    }

    .greeting {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }

    .section-header {
        margin-bottom: 2.5rem;
    }

    .image-wrapper {
        max-width: 280px;
    }

    .stat-number {
        font-size: 2.25rem;
    }

    .skill-items-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
        gap: 1rem;
    }

    .skill-item {
        padding: 1rem 0.75rem;
        min-height: 90px;
    }

    .skill-item i {
        font-size: 2.25rem;
    }

    .project-content {
        padding: 1.5rem;
    }

    .contact-form {
        padding: 1.5rem;
    }

    .contact-icon {
        width: 45px;
        height: 45px;
        font-size: 1.1rem;
    }

    .btn {
        padding: 0.875rem 1.75rem;
        font-size: 0.95rem;
    }
    
    .testimonial-card {
        padding: 2rem 1.5rem;
    }
}

/* ===================================
   ANIMATIONS
   =================================== */

[data-aos] {
    opacity: 0;
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

[data-aos].aos-animate {
    opacity: 1;
}

/* Email Toast Notification */
.email-toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 1rem 1.75rem;
    border-radius: 50px;
    box-shadow: 0 10px 40px rgba(99, 102, 241, 0.4);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.95rem;
    font-weight: 500;
    z-index: 10000;
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    pointer-events: none;
    max-width: 90%;
}

.email-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
    pointer-events: auto;
}

.email-toast.info {
    background: linear-gradient(135deg, #14b8a6 0%, #0891b2 100%);
    box-shadow: 0 10px 40px rgba(20, 184, 166, 0.4);
}

.email-toast i {
    font-size: 1.2rem;
    animation: iconPulse 2s ease-in-out infinite;
}

@keyframes iconPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

@media (max-width: 480px) {
    .email-toast {
        padding: 0.875rem 1.5rem;
        font-size: 0.875rem;
        max-width: 85%;
    }
}

[data-aos="fade-up"] {
    transform: translateY(30px);
}

[data-aos="fade-up"].aos-animate {
    transform: translateY(0);
}

[data-aos="fade-left"] {
    transform: translateX(-30px);
}

[data-aos="fade-left"].aos-animate {
    transform: translateX(0);
}

[data-aos="fade-right"] {
    transform: translateX(30px);
}

[data-aos="fade-right"].aos-animate {
    transform: translateX(0);
}