/* ========================================
   CSS Variables - Theme Colors
   ======================================== */
:root {
    /* Light Theme */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --text-primary: #212529;
    --text-secondary: #495057;
    --text-muted: #6c757d;
    --accent-primary: #007bff;
    --accent-secondary: #0056b3;
    --accent-gradient: linear-gradient(135deg, #007bff 0%, #00d4ff 100%);
    --border-color: #dee2e6;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --card-bg: #ffffff;
    --nav-bg: rgba(255, 255, 255, 0.95);
    --input-bg: #ffffff;
    --timeline-line: #dee2e6;
    --timeline-dot: #007bff;
}

[data-theme="dark"] {
    /* Dark Theme */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --text-primary: #f0f0f5;
    --text-secondary: #b8b8c8;
    --text-muted: #7a7a8a;
    --accent-primary: #00d4ff;
    --accent-secondary: #0099cc;
    --accent-gradient: linear-gradient(135deg, #00d4ff 0%, #7b2fff 100%);
    --border-color: #2a2a3a;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --card-bg: #16161f;
    --nav-bg: rgba(10, 10, 15, 0.95);
    --input-bg: #1a1a25;
    --timeline-line: #2a2a3a;
    --timeline-dot: #00d4ff;
}

/* ========================================
   Reset & Base Styles
   ======================================== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul {
    list-style: none;
}

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 0.5em;
}

h1 { font-size: clamp(2.5rem, 5vw, 3rem); }
h2 { font-size: clamp(2rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }
h4 { font-size: clamp(1rem, 1.5vw, 1.25rem); }

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

/* ========================================
   Theme Toggle
   ======================================== */
.theme-toggle {
    position: fixed;
    top: 100px;
    right: 20px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--accent-gradient);
    border: none;
    cursor: pointer;
    z-index: 1001;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
}

.theme-toggle i {
    position: absolute;
    font-size: 1.25rem;
    color: #fff;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.theme-toggle .fa-sun {
    opacity: 0;
    transform: rotate(-90deg);
}

.theme-toggle .fa-moon {
    opacity: 1;
    transform: rotate(0);
}

[data-theme="light"] .theme-toggle .fa-sun {
    opacity: 1;
    transform: rotate(0);
}

[data-theme="light"] .theme-toggle .fa-moon {
    opacity: 0;
    transform: rotate(90deg);
}

/* ========================================
   Navigation
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.navbar.scrolled {
    padding: 0.75rem 0;
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    font-family: 'Fira Code', monospace;
    letter-spacing: -0.5px;
}

.nav-logo span {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    gap: 0.5rem;
}

.nav-link {
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.3s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--accent-gradient);
    transition: width 0.3s ease;
}

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

.nav-link:hover::after,
.nav-link.active::after {
    width: 80%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    text-align: center;
}

.btn-primary {
    background: var(--accent-gradient);
    color: #fff;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 212, 255, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

/* ========================================
   Container
   ======================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ========================================
   Sections
   ======================================== */
.section {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 4rem;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--accent-gradient);
    border-radius: 2px;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: var(--bg-primary);
    overflow: hidden;
}

.hero-bg-animation {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 0;
}

.hero-bg-shape {
    position: absolute;
    border-radius: 50%;
    background: var(--accent-gradient);
    opacity: 0.1;
    filter: blur(60px);
    animation: heroFloat 20s ease-in-out infinite;
}

.hero-bg-shape:nth-child(1) {
    top: -10%;
    right: -5%;
    width: 500px;
    height: 500px;
    animation-delay: 0s;
}

.hero-bg-shape:nth-child(2) {
    bottom: -10%;
    left: -5%;
    width: 400px;
    height: 400px;
    animation-delay: -7s;
}

.hero-bg-shape:nth-child(3) {
    top: 50%;
    left: 50%;
    width: 300px;
    height: 300px;
    animation-delay: -14s;
}

@keyframes heroFloat {
    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 {
    text-align: center;
    max-width: 800px;
    z-index: 1;
    position: relative;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    z-index: 1;
}

.hero-greeting {
    font-size: 1.25rem;
    color: var(--accent-primary);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.hero-name {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.hero-roles {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    min-height: 2rem;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Hero Stats Badges */
.hero-stats {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.stat-badge {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.25rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.stat-badge:hover {
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.stat-badge strong {
    display: block;
    font-size: 1.1rem;
    color: var(--text-primary);
}

.stat-badge span {
    font-size: 0.85rem;
    color: var(--text-muted);
}

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

.hero-social {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.hero-social a {
    width: 45px;
    height: 45px;
    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 0.3s ease;
    border: 1px solid var(--border-color);
}

.hero-social a:hover {
    background: var(--accent-gradient);
    color: #fff;
    transform: translateY(-3px);
    border-color: transparent;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    font-size: 0.875rem;
    animation: bounce 2s infinite;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.scroll-indicator span {
    display: none;
}

@media (min-width: 769px) {
    .scroll-indicator span {
        display: inline;
    }
}

.scroll-indicator:hover {
    background: var(--bg-secondary);
    color: var(--accent-primary);
}

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

.scroll-indicator i {
    font-size: 1rem;
}

/* Scroll to Top Button */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--accent-gradient);
    border: none;
    cursor: pointer;
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.scroll-to-top i {
    color: #fff;
    font-size: 1.25rem;
}

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

.about-content {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 3rem;
    align-items: center;
}

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

.about-image-wrapper {
    position: relative;
    width: 280px;
    height: 280px;
}

.about-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    border: 3px solid var(--border-color);
}

.about-image-wrapper::before {
    content: '';
    position: absolute;
    top: -15px;
    left: -15px;
    right: 15px;
    bottom: 15px;
    border: 3px solid var(--accent-primary);
    border-radius: 20px;
    z-index: -1;
}

.about-text p {
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
}

.skills-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.skill-category {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.skill-category h4 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    font-size: 1rem;
    color: var(--text-primary);
}

.skill-category h4 i {
    color: var(--accent-primary);
    font-size: 1.25rem;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skill-tag {
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.skill-tag:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    background: rgba(0, 212, 255, 0.1);
}

/* ========================================
   Timeline (Education & Experience)
   ======================================== */
.education,
.experience {
    background: var(--bg-primary);
}

.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--timeline-line);
}

.timeline-item {
    position: relative;
    padding-left: 60px;
    margin-bottom: 3rem;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: 11px;
    top: 0;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--timeline-dot);
    border: 4px solid var(--bg-primary);
    box-shadow: 0 0 0 4px var(--bg-secondary);
}

.timeline-content {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.timeline-date {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--accent-gradient);
    color: #fff;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
}

.timeline-content h3 {
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.timeline-content h4 {
    color: var(--accent-primary);
    font-weight: 500;
    margin-bottom: 0.75rem;
}

.timeline-content p {
    margin-bottom: 0;
    font-size: 0.95rem;
}

/* ========================================
   Certifications Section
   ======================================== */
.certifications {
    background: var(--bg-secondary);
}

.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    max-width: 1000px;
    margin: 0 auto;
}

.cert-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.cert-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-primary);
}

.cert-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-gradient);
    border-radius: 12px;
    font-size: 1.25rem;
    color: #fff;
    flex-shrink: 0;
}

.cert-content {
    flex: 1;
}

.cert-content h3 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.cert-content p {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.cert-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(0, 212, 255, 0.15);
    color: var(--accent-primary);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* ========================================
   Services Section
   ======================================== */
.services {
    background: var(--bg-secondary);
}

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

.service-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-primary);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-gradient);
    border-radius: 50%;
    font-size: 2rem;
    color: #fff;
}

.service-card h3 {
    margin-bottom: 0.75rem;
}

.service-card p {
    margin-bottom: 0;
    font-size: 0.95rem;
}

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

.portfolio-filters {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.625rem 1.5rem;
    border-radius: 50px;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--accent-gradient);
    color: #fff;
    border-color: transparent;
}

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

.portfolio-item {
    opacity: 1;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.portfolio-item.hidden {
    display: none;
}

.portfolio-card {
    background: var(--card-bg);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.portfolio-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

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

.portfolio-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, transparent 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 1.5rem;
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.portfolio-link {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-gradient);
    color: #fff;
    border-radius: 50%;
    font-size: 1rem;
    transition: transform 0.3s ease;
}

.portfolio-link:hover {
    transform: scale(1.1);
}

.portfolio-category {
    color: #fff;
    font-size: 0.875rem;
    font-weight: 500;
    background: rgba(0, 212, 255, 0.2);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    align-self: flex-start;
    backdrop-filter: blur(10px);
}

.portfolio-info {
    padding: 1.5rem;
}

.portfolio-info h3 {
    margin-bottom: 0.5rem;
}

.portfolio-info p {
    margin-bottom: 0;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.portfolio-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.portfolio-tech span {
    padding: 0.25rem 0.75rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    font-size: 0.75rem;
    color: var(--accent-primary);
    font-weight: 500;
}

/* ========================================
   CTA Section
   ======================================== */
.cta {
    background: var(--accent-gradient);
    padding: 80px 0;
    text-align: center;
}

.cta h2 {
    color: #fff;
    margin-bottom: 1rem;
}

.cta p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 2rem;
}

.cta .btn {
    background: #fff;
    color: var(--accent-primary);
    border: none;
}

.cta .btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

/* ========================================
   Testimonials Section
   ======================================== */
.testimonials {
    background: var(--bg-secondary);
}

.testimonials-container {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.testimonials-viewport {
    overflow: hidden;
    width: 100%;
}

.testimonials-wrapper {
    display: flex;
    transition: transform 0.5s ease;
    width: 100%;
}

.testimonials-wrapper .testimonial-card {
    min-width: 100%;
    width: 100%;
    flex-shrink: 0;
    box-sizing: border-box;
}

.testimonials-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    margin-top: 2rem;
}

.testimonial-prev,
.testimonial-next {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.testimonial-prev:hover,
.testimonial-next:hover {
    background: var(--accent-gradient);
    border-color: transparent;
    color: #fff;
}

.testimonials-dots {
    display: flex;
    gap: 0.5rem;
}

.testimonials-dots button {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border-color);
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.testimonials-dots button.active {
    background: var(--accent-gradient);
    width: 30px;
    border-radius: 5px;
}

.testimonials-wrapper .testimonial-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: box-shadow 0.3s ease;
}

.testimonials-wrapper .testimonial-card:hover {
    box-shadow: var(--shadow-lg);
}

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

.testimonial-quote {
    font-size: 2rem;
    color: var(--accent-primary);
    opacity: 0.3;
    margin-bottom: 1rem;
}

.testimonial-content p {
    font-style: italic;
    margin-bottom: 0;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

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

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

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

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

.contact-info h3,
.contact-form h3 {
    margin-bottom: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

.contact-item i {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-gradient);
    color: #fff;
    border-radius: 50%;
    font-size: 1rem;
}

.contact-item span,
.contact-item a {
    color: var(--text-secondary);
}

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

.contact-social {
    display: flex;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.contact-social a {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    color: var(--text-primary);
    border-radius: 50%;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.contact-social a:hover {
    background: var(--accent-gradient);
    color: #fff;
    border-color: transparent;
    transform: translateY(-3px);
}

.contact-form {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

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

.form-group {
    margin-bottom: 1rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem 1.25rem;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

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

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

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

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

.footer-content p {
    margin-bottom: 0.5rem;
    color: var(--text-muted);
}

.footer-credit {
    font-size: 0.875rem;
}

.footer-credit::before {
    content: '❤ ';
    color: #ff4757;
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 992px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

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

    .about-image-wrapper {
        width: 220px;
        height: 220px;
    }

    .skills-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .portfolio-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }

    .services-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--nav-bg);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: 1.5rem 2rem;
        gap: 0.75rem;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-lg);
        transform: translateY(-150%);
        opacity: 0;
        transition: all 0.3s ease;
        max-height: 80vh;
        overflow-y: auto;
        z-index: 999;
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
    }

    .nav-toggle {
        display: flex;
    }

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

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

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .hero {
        min-height: 100vh;
        padding-top: 80px;
        padding-bottom: 40px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 0.75rem;
    }

    .hero-stats {
        gap: 0.75rem;
    }

    .stat-badge {
        padding: 0.5rem 0.875rem;
    }

    .stat-badge i {
        font-size: 1.25rem;
    }

    .stat-badge strong {
        font-size: 0.95rem;
    }

    .stat-badge span {
        font-size: 0.75rem;
    }

    .hero-social {
        gap: 0.75rem;
        margin-top: 1rem;
    }

    .scroll-indicator {
        bottom: 20px;
    }

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

    .timeline::before {
        left: 15px;
    }

    .timeline-item {
        padding-left: 45px;
    }

    .timeline-dot {
        left: 6px;
        width: 18px;
        height: 18px;
    }

    .theme-toggle {
        top: 80px;
        right: 15px;
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .nav-container {
        padding: 0 1rem;
    }

    .section {
        padding: 60px 0;
    }

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

    .services-grid {
        grid-template-columns: 1fr;
    }

    .testimonials-wrapper .testimonial-card {
        min-width: 100%;
    }

    .portfolio-grid {
        grid-template-columns: 1fr;
    }

    .hero-social {
        gap: 0.75rem;
    }

    .hero-social a {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
}