/* ============================================
   PORTFOLIO STYLESHEET
   ============================================
   Table of Contents:
   1. CSS Variables & Themes
   2. Reset & Base
   3. Typography
   4. Utilities (Container, Buttons, Section headers)
   5. Loader
   6. Navbar
   7. Mobile Menu
   8. Hero
   9. About
   10. Skills
   11. Services
   12. Projects
   13. Why Me
   14. Statistics
   15. Contact
   16. Footer
   17. Back to Top
   18. Scroll Reveal Animations
   19. Media Queries
   ============================================ */

/* ===== 1. CSS Variables & Themes ===== */
:root {
    /* Colors - Dark Theme (default) */
    --bg-primary: #0a0e17;
    --bg-secondary: #111827;
    --bg-card: #1a2234;
    --bg-hover: #232c42;
    --text-primary: #e8eaf0;
    --text-secondary: #9ca3b8;
    --text-muted: #6b7280;
    --accent: #64ffda;
    --accent-hover: #4de0c0;
    --accent-rgb: 100, 255, 218;
    --border-color: #2a3550;
    --shadow-color: rgba(0, 0, 0, 0.4);
    --nav-bg: rgba(10, 14, 23, 0.92);
    --footer-bg: #0d1320;
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;

    /* Typography */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;

    /* Layout */
    --container-max: 1200px;
    --nav-height: 70px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;

    /* Effects */
    --transition: 0.3s ease;
    --transition-slow: 0.5s ease;
    --shadow-sm: 0 2px 8px var(--shadow-color);
    --shadow-md: 0 8px 24px var(--shadow-color);
    --shadow-lg: 0 16px 48px var(--shadow-color);
    --glow: 0 0 20px rgba(var(--accent-rgb), 0.15);
}

/* Light Theme */
[data-theme="light"] {
    --bg-primary: #f8f9fb;
    --bg-secondary: #f1f3f7;
    --bg-card: #ffffff;
    --bg-hover: #f3f5f9;
    --text-primary: #1f2937;
    --text-secondary: #4b5563;
    --text-muted: #9ca3af;
    --accent: #0d9488;
    --accent-hover: #0b7d74;
    --accent-rgb: 13, 148, 136;
    --border-color: #e5e7eb;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --nav-bg: rgba(248, 249, 251, 0.95);
    --footer-bg: #f1f3f7;
    --success: #059669;
    --error: #dc2626;
    --warning: #d97706;
}

/* ===== 2. Reset & Base ===== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
    transition: background-color var(--transition), color var(--transition);
}

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

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--accent), var(--accent-hover));
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-hover);
}

/* Firefox scrollbar */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--accent) var(--bg-secondary);
}

/* ===== 3. Typography ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-primary);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }
h4 { font-size: 1.1rem; }

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

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

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

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

/* ===== 4. Utilities ===== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.section {
    padding: var(--space-xl) 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.section-title {
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    margin-bottom: var(--space-sm);
}

.section-title .accent {
    color: var(--accent);
    position: relative;
}

.section-title .accent::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--accent);
    border-radius: var(--radius-full);
    opacity: 0.6;
}

.section-subtitle {
    color: var(--text-muted);
    font-size: 1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.75rem;
    font-size: 0.95rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    color: var(--bg-primary);
    box-shadow: var(--glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(var(--accent-rgb), 0.25);
}

.btn-outline {
    background: transparent;
    color: var(--accent);
    border: 2px solid var(--accent);
}

.btn-outline:hover {
    background: var(--accent);
    color: var(--bg-primary);
    transform: translateY(-2px);
}

.btn-sm {
    padding: 0.5rem 1.25rem;
    font-size: 0.85rem;
}

.btn-block {
    width: 100%;
}

/* ===== 5. Loader ===== */
.loader {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loader-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.loader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

/* ===== 6. Navbar ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--nav-bg);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
    background: var(--nav-bg);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--nav-height);
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.5px;
    transition: color var(--transition);
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    list-style: none;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--accent);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.theme-toggle {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    color: var(--accent);
    background: var(--bg-hover);
}

.nav-cta {
    display: none;
}

/* Hamburger */
.hamburger {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    margin: 5px auto;
    border-radius: 2px;
    transition: all var(--transition);
}

.hamburger.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

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

.hamburger.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ===== 7. Mobile Menu ===== */
.mobile-menu {
    position: fixed;
    top: 0;
    right: 0;
    width: 300px;
    height: 100vh;
    background: var(--bg-secondary);
    z-index: 1002;
    transform: translateX(100%);
    visibility: hidden;
    transition: transform var(--transition), visibility 0s linear var(--transition);
    padding: var(--space-lg) var(--space-md);
    overflow-y: auto;
}

.mobile-menu.open {
    transform: translateX(0);
    visibility: visible;
}

.mobile-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: var(--space-lg);
}

.mobile-links a {
    color: var(--text-secondary);
    font-size: 1.1rem;
    font-weight: 500;
    text-decoration: none;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.mobile-links a::before {
    content: "\2192"; /* right arrow (LTR) */
    color: var(--accent);
    font-size: 0.9rem;
}

[dir="rtl"] .mobile-links a::before {
    content: "\2190"; /* left arrow (RTL) */
}

.mobile-links a:hover,
.mobile-links a.active {
    color: var(--accent);
    background: var(--bg-hover);
}

.mobile-social {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: var(--space-lg);
}

.mobile-social a {
    color: var(--text-secondary);
    font-size: 1.2rem;
    transition: all var(--transition);
}

.mobile-social a:hover {
    color: var(--accent);
    transform: translateY(-2px);
}

.mobile-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
}

.mobile-overlay.show {
    opacity: 1;
    visibility: visible;
}

/* ===== 8. Hero ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: var(--nav-height);
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(var(--accent-rgb), 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(var(--accent-rgb), 0.05) 1px, transparent 1px);
    background-size: 60px 60px;
    opacity: 0.3;
}

.hero-glow {
    position: absolute;
    top: 20%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(var(--accent-rgb), 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    align-items: center;
}

.hero-text {
    text-align: left;
}

.hero-greeting {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.hero-name {
    color: var(--accent);
    font-weight: 700;
}

.hero-role {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    background: linear-gradient(135deg, var(--text-primary), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    margin-bottom: var(--space-sm);
}

.hero-tagline {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin-bottom: var(--space-md);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: var(--space-md);
    flex-wrap: wrap;
}

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

.hero-social a {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--bg-card);
    color: var(--text-secondary);
    font-size: 1.1rem;
    border: 1px solid var(--border-color);
    transition: all var(--transition);
}

.hero-social a:hover {
    background: var(--accent);
    color: var(--bg-primary);
    border-color: var(--accent);
    transform: translateY(-3px);
    box-shadow: var(--glow);
}

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

.code-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--space-md);
    min-width: 320px;
    max-width: 100%;
    position: relative;
    transition: transform var(--transition);
}

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

.code-dots {
    display: flex;
    gap: 0.5rem;
    margin-bottom: var(--space-sm);
}

.code-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--text-muted);
}

.code-dots span:nth-child(1) { background: #ff5f57; }
.code-dots span:nth-child(2) { background: #febc2e; }
.code-dots span:nth-child(3) { background: #28c840; }

.code-card pre {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-primary);
    overflow-x: auto;
}

.code-c { color: #c678dd; }
.code-v { color: #e5c07b; }
.code-p { color: #61afef; }
.code-s { color: #98c379; }

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-muted);
    font-size: 1.2rem;
    animation: bounce 2s infinite;
    z-index: 1;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

/* ===== 9. About ===== */
.about {
    background: var(--bg-secondary);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-lg);
    align-items: start;
}

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

.about-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    max-width: 350px;
    text-align: center;
    transition: transform var(--transition);
}

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

.about-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: var(--bg-primary);
    margin: 0 auto var(--space-md);
    box-shadow: var(--glow);
}

.about-card-info h3 {
    font-size: 1.3rem;
    margin-bottom: 0.25rem;
}

.about-card-info p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.about-card-status {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: var(--space-md);
    padding: 0.5rem 1rem;
    background: var(--bg-hover);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.about-content {
    padding: var(--space-md);
}

.about-heading {
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
}

.about-paragraphs p {
    margin-bottom: var(--space-sm);
    color: var(--text-secondary);
}

.about-info-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.about-info-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.75rem 1rem;
}

.about-info-item .info-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: block;
    margin-bottom: 0.25rem;
}

.about-info-item .info-value {
    font-size: 0.95rem;
    color: var(--text-primary);
    font-weight: 500;
}

.about-actions {
    display: flex;
    gap: 1rem;
    margin-top: var(--space-md);
    flex-wrap: wrap;
}

/* ===== 10. Skills ===== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-md);
}

.skill-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    transition: all var(--transition);
}

.skill-card:hover {
    border-color: var(--accent);
    transform: translateY(-3px);
    box-shadow: var(--glow);
}

.skill-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-sm);
}

.skill-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.skill-level {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.skill-bar {
    height: 8px;
    background: var(--bg-hover);
    border-radius: var(--radius-full);
    overflow: hidden;
    position: relative;
}

.skill-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--accent-hover));
    border-radius: var(--radius-full);
    width: 0;
    transition: width 1s ease;
    position: relative;
}

.skill-fill::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 4px;
    height: 100%;
    background: var(--accent);
    border-radius: var(--radius-full);
    box-shadow: var(--glow);
}

/* ===== 11. Services ===== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-md);
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), transparent);
    opacity: 0;
    transition: opacity var(--transition);
}

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

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

.service-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    border-radius: var(--radius-md);
    color: var(--bg-primary);
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
    box-shadow: var(--glow);
}

.service-card h3 {
    font-size: 1.2rem;
    margin-bottom: var(--space-xs);
}

.service-card p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== 12. Projects ===== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--space-md);
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
}

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

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

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

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

.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(var(--accent-rgb), 0.2));
    opacity: 0;
    transition: opacity var(--transition);
}

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

.project-body {
    padding: var(--space-md);
    flex: 1;
}

.project-body h3 {
    font-size: 1.2rem;
    margin-bottom: var(--space-xs);
}

.project-body p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
    line-height: 1.6;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: var(--space-sm);
}

.tech-tag {
    background: var(--bg-hover);
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 500;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-color);
    transition: all var(--transition);
}

.tech-tag:hover {
    color: var(--accent);
    border-color: var(--accent);
}

.project-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: var(--space-sm);
}

.project-actions .btn {
    flex: 1;
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
}

/* ===== 13. Why Me ===== */
.why-me {
    background: var(--bg-secondary);
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-md);
}

.why-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    text-align: center;
    transition: all var(--transition);
}

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

.why-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-hover);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--accent);
    font-size: 1.3rem;
    margin: 0 auto var(--space-sm);
    transition: all var(--transition);
}

.why-card:hover .why-icon {
    background: var(--accent);
    color: var(--bg-primary);
    border-color: var(--accent);
    box-shadow: var(--glow);
}

.why-card h3 {
    font-size: 1.1rem;
    margin-bottom: var(--space-xs);
}

.why-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== 14. Statistics ===== */
.stats {
    background: var(--bg-primary);
    position: relative;
    overflow: hidden;
}

.stats::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(var(--accent-rgb), 0.03), transparent);
    pointer-events: none;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
}

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

.stat-item:hover {
    transform: translateY(-3px);
    border-color: var(--accent);
    box-shadow: var(--glow);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--accent);
    font-family: var(--font-mono);
    display: block;
    margin-bottom: var(--space-xs);
}

.stat-label {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* ===== 15. Contact ===== */
.contact {
    background: var(--bg-secondary);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-lg);
    align-items: start;
}

.contact-info {
    padding: var(--space-md);
}

.contact-info h3 {
    font-size: 1.5rem;
    margin-bottom: var(--space-xs);
}

.contact-info p {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-sm);
    transition: all var(--transition);
}

.contact-item:hover {
    border-color: var(--accent);
    transform: translateX(3px);
}

.contact-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-hover);
    border-radius: var(--radius-sm);
    color: var(--accent);
    font-size: 1.1rem;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.contact-item a,
.contact-item span {
    color: var(--text-primary);
    font-size: 0.95rem;
    text-decoration: none;
    transition: color var(--transition);
}

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

.contact-social {
    display: flex;
    gap: 0.75rem;
    margin-top: var(--space-md);
}

.contact-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--bg-card);
    color: var(--text-secondary);
    font-size: 1rem;
    border: 1px solid var(--border-color);
    transition: all var(--transition);
}

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

/* Contact Form */
.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: var(--space-sm);
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-hover);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-main);
    font-size: 0.95rem;
    transition: all var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.15);
}

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

.form-group input.invalid,
.form-group textarea.invalid {
    border-color: var(--error);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.form-error {
    display: block;
    font-size: 0.8rem;
    color: var(--error);
    margin-top: 0.25rem;
    min-height: 1rem;
}

.form-note {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: var(--space-sm);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-note i {
    color: var(--warning);
}

/* ===== 16. Footer ===== */
.footer {
    background: var(--footer-bg);
    padding: var(--space-lg) 0;
    border-top: 1px solid var(--border-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.footer-brand h3 {
    font-size: 1.5rem;
    color: var(--accent);
    margin-bottom: var(--space-xs);
}

.footer-brand p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.footer-social {
    display: flex;
    gap: 0.75rem;
}

.footer-social a {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--bg-hover);
    color: var(--text-secondary);
    font-size: 0.95rem;
    border: 1px solid var(--border-color);
    transition: all var(--transition);
}

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

.footer-links-col h4,
.footer-contact-col h4 {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-decoration: none;
    transition: all var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-links a::before {
    content: "\203A"; /* single right angle quote (LTR) */
    color: var(--accent);
}

[dir="rtl"] .footer-links a::before {
    content: "\2039"; /* mirrored for RTL */
}

.footer-links a:hover {
    color: var(--accent);
    padding-left: 0.25rem;
}

.footer-contact {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.footer-contact i {
    color: var(--accent);
    font-size: 0.85rem;
    width: 20px;
    text-align: center;
}

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

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

.footer-bottom {
    text-align: center;
    padding-top: var(--space-md);
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.footer-bottom i {
    color: var(--error);
}

/* ===== 17. Back to Top ===== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--accent);
    color: var(--bg-primary);
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    box-shadow: var(--glow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition);
    z-index: 999;
}

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

.back-to-top:hover {
    background: var(--accent-hover);
    transform: translateY(-3px);
}

/* ===== 18. Scroll Reveal Animations ===== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Stagger delays for grid items */
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* ===== 19. Media Queries ===== */

/* Tablet */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

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

    .hero-tagline {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-buttons {
        justify-content: center;
    }

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

    .hero-visual {
        margin-top: var(--space-md);
    }

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

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

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

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

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

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

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

    .footer-links {
        align-items: center;
    }

    .footer-contact {
        align-items: center;
    }
}

/* Mobile */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .nav-cta {
        display: none;
    }

    .hamburger {
        display: block;
    }

    .nav-actions {
        gap: 0.5rem;
    }

    .section {
        padding: var(--space-lg) 0;
    }

    .hero {
        min-height: auto;
        padding-top: calc(var(--nav-height) + var(--space-lg));
    }

    .hero-role {
        font-size: clamp(2rem, 4vw, 3rem);
    }

    .code-card {
        min-width: 0;
        width: 100%;
    }

    .skills-grid,
    .services-grid,
    .projects-grid,
    .why-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-sm);
    }

    .stat-number {
        font-size: 2rem;
    }

    .contact-form {
        padding: var(--space-md);
    }

    .back-to-top {
        bottom: 1.5rem;
        right: 1.5rem;
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-sm);
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .hero-buttons .btn {
        width: 100%;
    }

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

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

    .footer-bottom {
        font-size: 0.8rem;
    }
}

/* Reduced Motion Preference */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        /* Stop animations COMPLETELY (not 0.01ms) - otherwise infinite
           animations vibrate at extreme speed instead of stopping */
        animation: none !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}
/* ===== 20. Language Toggle & RTL Support ===== */
.lang-toggle {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    padding: 0.45rem 0.9rem;
    border-radius: var(--radius-full);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    transition: all 0.3s ease;
}
.lang-toggle:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--bg-hover);
    transform: translateY(-2px);
}

/* Success state for the contact form button */
.btn-success {
    background: var(--success) !important;
    color: #fff !important;
}

/* ===== RTL Layout (Arabic) ===== */
[dir="rtl"] .mobile-menu {
    right: auto;
    left: 0;
    transform: translateX(-100%);
}
[dir="rtl"] .mobile-menu.open {
    transform: translateX(0);
    visibility: visible;
}
[dir="rtl"] .back-to-top {
    right: auto;
    left: 2rem;
}
[dir="rtl"] .contact-item:hover {
    transform: translateX(-3px);
}
[dir="rtl"] body,
[dir="rtl"] input,
[dir="rtl"] textarea,
[dir="rtl"] button,
[dir="rtl"] .btn {
    font-family: 'Segoe UI', Tahoma, 'Noto Kufi Arabic', 'Noto Naskh Arabic', sans-serif;
}
[dir="rtl"] .section-title .accent::after {
    left: auto;
    right: 0;
}
[dir="rtl"] .nav-links a::after {
    left: auto;
    right: 0;
}
[dir="rtl"] .footer-links a:hover {
    padding-left: 0;
    padding-right: 0.25rem;
}

/* ===== 21. Smooth hover transitions (300ms) ===== */
.theme-toggle,
.nav-links a,
.hero-social a,
.contact-social a,
.footer-social a,
.project-card img,
.skill-card,
.service-card,
.why-card,
.contact-item {
    -webkit-transition: all 0.3s ease;
    transition: all 0.3s ease;
}

/* ===== 22. Extra Simple Animations ===== */
/* Floating code card */
@keyframes floaty {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}
.code-card { animation: floaty 6s ease-in-out infinite; }

/* Soft glow pulse behind hero */
@keyframes glowPulse {
    0%, 100% { opacity: .5; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 1; transform: translate(-50%, -50%) scale(1.12); }
}
.hero-glow { animation: glowPulse 5s ease-in-out infinite; }

/* Blinking caret for the hero typing */
.caret {
    display: inline-block;
    width: 3px;
    height: 1em;
    background: var(--accent);
    margin-left: 3px;
    border-radius: 2px;
    vertical-align: text-bottom;
    animation: blink 1s steps(1) infinite;
}
@keyframes blink {
    0%, 49% { opacity: 1; }
    50%, 100% { opacity: 0; }
}

/* Gentle wave on the name */
.hero-name {
    display: inline-block;
    animation: wave 2.4s ease-in-out infinite;
}
@keyframes wave {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(-5deg); }
    50% { transform: rotate(5deg); }
    75% { transform: rotate(-2deg); }
}

/* Shine sweep on buttons on hover */
.btn::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 40%;
    height: 100%;
    background: linear-gradient(120deg, transparent, rgba(255, 255, 255, .35), transparent);
    transform: translateX(-150%) skewX(-20deg);
    pointer-events: none;
}
.btn:hover::after {
    animation: shine .8s ease;
}
@keyframes shine {
    0% { transform: translateX(-150%) skewX(-20deg); }
    100% { transform: translateX(300%) skewX(-20deg); }
}

/* ===== 24. Contact form: honeypot + status message ===== */
.hp-field {
    position: absolute !important;
    left: -10000px !important;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.form-status {
    min-height: 1.4em;
    margin-top: var(--space-sm);
    margin-bottom: 0;
    font-size: 0.9rem;
    font-weight: 600;
}

.form-status.success { color: var(--success); }
.form-status.error { color: var(--error); }

/* ===== 25. Testimonials ===== */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-md);
}

.testimonial-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

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

.stars {
    color: #f59e0b;
    display: flex;
    gap: 0.25rem;
    font-size: 0.95rem;
}

.testimonial-quote {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.8;
    flex: 1;
    margin: 0;
}

.testimonial-meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.testimonial-avatar {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    color: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}

.testimonial-who strong {
    display: block;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.testimonial-who small {
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* ===== 26. Utilities ===== */
/* Hide elements visually and from accessibility tree */
.is-hidden {
    display: none !important;
}