/* ==========================================================================
   CSS Custom Properties & Design Tokens
   ========================================================================== */
:root {
    /* Color Palette - Space Dark Theme (Default) */
    --bg-primary: #07040d;
    --bg-secondary: #0f0a1c;
    --bg-tertiary: #17112a;
    
    --accent-purple: #9d4edd;
    --accent-purple-glow: rgba(157, 78, 221, 0.4);
    --accent-blue: #00f5d4;
    --accent-blue-glow: rgba(0, 245, 212, 0.4);
    
    --text-primary: #f8f9fa;
    --text-secondary: #a0aec0;
    --text-muted: #718096;
    
    /* Glassmorphism Styles */
    --glass-bg: rgba(15, 10, 28, 0.4);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-shadow: rgba(0, 0, 0, 0.5);
    
    /* Layout Tokens */
    --font-ar: 'Cairo', sans-serif;
    --font-en: 'Outfit', sans-serif;
    --transition-slow: 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
    --transition-fast: 0.25s ease;
    --border-radius-sm: 8px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
}

/* Light Theme Overrides */
body.light-theme {
    --bg-primary: #f4f6fa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e9ecf5;
    
    --accent-purple: #7b2cbf;
    --accent-purple-glow: rgba(123, 44, 191, 0.25);
    --accent-blue: #00b4d8;
    --accent-blue-glow: rgba(0, 180, 216, 0.25);
    
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    
    --glass-bg: rgba(255, 255, 255, 0.65);
    --glass-border: rgba(0, 0, 0, 0.08);
    --glass-shadow: rgba(0, 0, 0, 0.15);
}

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

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

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-ar);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--transition-slow), color var(--transition-slow);
    position: relative;
    min-height: 100vh;
}

/* Dual-Language Font Switch */
html[lang="en"] body {
    font-family: var(--font-en);
}

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

button {
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
}

input, textarea {
    font-family: inherit;
}

/* Interactive Particle Canvas styling */
#particle-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

/* ==========================================================================
   Reusable Utilities
   ========================================================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.highlight {
    color: var(--accent-purple);
    text-shadow: 0 0 10px var(--accent-purple-glow);
}

.gradient-text {
    background: linear-gradient(135deg, var(--accent-purple) 0%, var(--accent-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.hide-mobile {
    display: inherit;
}

@media (max-width: 768px) {
    .hide-mobile {
        display: none !important;
    }
}

/* Glassmorphism Card Style */
.glass-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border-radius: var(--border-radius-md);
    box-shadow: 0 8px 32px var(--glass-shadow);
    padding: 30px;
    transition: transform var(--transition-slow), border-color var(--transition-fast), box-shadow var(--transition-slow);
}

.glass-card:hover {
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 12px 40px rgba(157, 78, 221, 0.15);
}

/* Buttons System */
.btn-primary {
    background: linear-gradient(135deg, var(--accent-purple) 0%, var(--accent-blue) 100%);
    color: #fff;
    padding: 12px 28px;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    font-size: 1rem;
    box-shadow: 0 4px 15px var(--accent-purple-glow);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), filter var(--transition-fast);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--accent-blue-glow);
    filter: brightness(1.1);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    padding: 12px 28px;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    backdrop-filter: blur(10px);
    transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent-purple);
    transform: translateY(-2px);
}

.btn-icon {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.btn-icon:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--accent-purple);
    color: var(--accent-purple);
    transform: scale(1.05);
}

.btn-sm {
    padding: 8px 18px;
    font-size: 0.875rem;
}

.btn-md {
    padding: 12px 24px;
}

.btn-block {
    display: flex;
    width: 100%;
}

.badge {
    background: rgba(157, 78, 221, 0.12);
    border: 1px solid rgba(157, 78, 221, 0.3);
    color: #ce93d8;
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
    animation: pulseGlow 3s infinite alternate;
}

@keyframes pulseGlow {
    0% { box-shadow: 0 0 5px rgba(157, 78, 221, 0.1); border-color: rgba(157, 78, 221, 0.3); }
    100% { box-shadow: 0 0 15px rgba(157, 78, 221, 0.3); border-color: rgba(157, 78, 221, 0.6); }
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.glass-header {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 40px);
    max-width: 1200px;
    height: 70px;
    z-index: 1000;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-radius: var(--border-radius-md);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    transition: width var(--transition-slow), top var(--transition-slow), border-radius var(--transition-slow);
}

.glass-header.scrolled {
    top: 0;
    width: 100%;
    border-radius: 0;
    border-top: none;
    border-left: none;
    border-right: none;
    background: rgba(7, 4, 13, 0.85);
}
body.light-theme .glass-header.scrolled {
    background: rgba(244, 246, 2fa, 0.9);
}

.nav-container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 30px;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 1px;
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--text-primary) 50%, var(--accent-purple) 100%);
    -webkit-background-clip: text;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-secondary);
    position: relative;
    padding: 5px 0;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-purple), var(--accent-blue));
    transition: transform var(--transition-fast);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    transform: translateX(-50%) scaleX(1);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.lang-text {
    font-size: 0.85rem;
    font-weight: 700;
    margin-inline-end: 4px;
}

/* Mobile Nav Styles */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 20px;
}

.mobile-menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition-fast);
}

@media (max-width: 991px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
}

.mobile-nav {
    position: fixed;
    top: 95px;
    left: 20px;
    right: 20px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--border-radius-md);
    box-shadow: 0 10px 40px rgba(0,0,0,0.4);
    padding: 30px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-20px);
    transition: transform var(--transition-slow), opacity var(--transition-slow), visibility var(--transition-slow);
}

.mobile-nav.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.mobile-link {
    font-size: 1.2rem;
    font-weight: 600;
    padding-bottom: 5px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
    padding-top: 150px;
    padding-bottom: 80px;
    position: relative;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 50px;
    align-items: center;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
}

html[lang="en"] .hero-title {
    font-size: 3.5rem;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 35px;
    max-width: 600px;
}

.hero-btns {
    display: flex;
    gap: 20px;
    margin-bottom: 40px;
}

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

.social-link {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.social-link:hover {
    color: var(--accent-blue);
    border-color: var(--accent-blue);
    background: rgba(0, 245, 212, 0.05);
    box-shadow: 0 0 15px var(--accent-blue-glow);
    transform: translateY(-3px);
}

/* Hero Right Side - Image and frame */
.hero-image-container {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.glowing-orb {
    position: absolute;
    width: 320px;
    height: 320px;
    background: radial-gradient(circle, var(--accent-purple-glow) 0%, transparent 70%);
    border-radius: 50%;
    z-index: -1;
    filter: blur(20px);
    animation: floatOrb 8s ease-in-out infinite alternate;
}

@keyframes floatOrb {
    0% { transform: translate(-20px, -20px) scale(0.9); }
    100% { transform: translate(20px, 20px) scale(1.1); }
}

.glass-frame {
    width: 340px;
    height: 440px;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--glass-border);
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(10px);
    box-shadow: 0 20px 50px var(--glass-shadow);
    padding: 16px;
    position: relative;
    overflow: hidden;
    animation: floatFrame 6s ease-in-out infinite alternate;
    transition: var(--transition-slow);
}

.glass-frame::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(from 0deg, transparent, var(--accent-purple), var(--accent-blue), transparent);
    animation: rotateBorder 8s linear infinite;
    z-index: 1;
    opacity: 0.7;
}

.glass-frame::after {
    content: '';
    position: absolute;
    inset: 2px;
    border-radius: calc(var(--border-radius-lg) - 2px);
    background: var(--bg-primary);
    z-index: 2;
    transition: background-color var(--transition-slow);
}

@keyframes rotateBorder {
    100% { transform: rotate(360deg); }
}

@keyframes floatFrame {
    0% { transform: translateY(0px) rotate(0deg); }
    100% { transform: translateY(-15px) rotate(1deg); }
}

.hero-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    border-radius: calc(var(--border-radius-lg) - 14px);
    position: relative;
    z-index: 3;
    transition: transform var(--transition-slow);
}

.glass-frame:hover {
    transform: translateY(-20px) rotate(0deg) scale(1.02);
}

.glass-frame:hover .hero-img {
    transform: scale(1.05);
}

/* ==========================================================================
   Quick Stats
   ========================================================================== */
.stats-container {
    margin-top: 60px;
}

.stats-glass {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(15px);
    border-radius: var(--border-radius-md);
    box-shadow: 0 10px 30px var(--glass-shadow);
    padding: 30px;
    align-items: center;
    text-align: center;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.stat-number {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--accent-blue);
    text-shadow: 0 0 15px var(--accent-blue-glow);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.stat-divider {
    height: 50px;
    width: 1px;
    background: var(--glass-border);
    justify-self: center;
}

@media (max-width: 768px) {
    .stats-glass {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .stat-divider {
        display: none;
    }
}

/* ==========================================================================
   Section Headers
   ========================================================================== */
.section-header {
    margin-bottom: 60px;
}

.section-tag {
    color: var(--accent-purple);
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    display: block;
    margin-bottom: 12px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 15px;
}

.section-desc {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* ==========================================================================
   About Section & Skills
   ========================================================================== */
.about-section {
    padding: 100px 0;
    background: linear-gradient(180deg, transparent, rgba(15, 10, 28, 0.3), transparent);
}

.about-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.2fr 0.9fr;
    gap: 30px;
}

/* About Image Card Specifics */
.about-image-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 30px;
}

.about-img-frame {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    border: 3px solid var(--accent-purple);
    box-shadow: 0 0 20px var(--accent-purple-glow);
    overflow: hidden;
    margin-bottom: 20px;
    transition: var(--transition-slow);
}

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

.about-image-card:hover .about-img-frame {
    border-color: var(--accent-blue);
    box-shadow: 0 0 25px var(--accent-blue-glow);
    transform: scale(1.05);
}

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

.about-img-name {
    font-size: 1.35rem;
    font-weight: 800;
    margin-bottom: 5px;
}

.about-img-role {
    font-size: 0.85rem;
    font-weight: 700;
}

.card-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.card-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    inset-inline-start: 0;
    width: 50px;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-purple), var(--accent-blue));
    border-radius: 2px;
}

.card-text {
    color: var(--text-secondary);
    margin-bottom: 25px;
}

.personal-details {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.detail-row {
    display: flex;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 10px;
}

.detail-label {
    font-weight: 700;
    width: 140px;
    color: var(--text-primary);
}

.detail-val {
    color: var(--text-secondary);
}

/* Skills progress styles */
.skill-progress-bar {
    margin-bottom: 25px;
}

.skill-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-weight: 600;
}

.skill-name {
    font-size: 0.95rem;
}

.skill-percent {
    color: var(--accent-blue);
}

.progress-track {
    width: 100%;
    height: 8px;
    background: rgba(255,255,255,0.05);
    border-radius: 4px;
    overflow: hidden;
    border: 1px solid var(--glass-border);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-purple), var(--accent-blue));
    border-radius: 4px;
    width: 0%;
    transition: width 2s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* ==========================================================================
   Portfolio Section & Dynamic Filter
   ========================================================================== */
.portfolio-section {
    padding: 100px 0;
}

.portfolio-filters {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.filter-btn {
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    padding: 10px 24px;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 600;
    backdrop-filter: blur(10px);
    transition: var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
    background: linear-gradient(135deg, var(--accent-purple) 0%, var(--accent-blue) 100%);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 5px 15px var(--accent-purple-glow);
    transform: translateY(-2px);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.portfolio-item {
    display: flex;
    flex-direction: column;
    padding: 0;
    overflow: hidden;
}

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

.project-img-wrapper {
    position: relative;
    width: 100%;
    height: 220px;
    overflow: hidden;
}

/* Modern Gradient Placeholders */
.project-gradient-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3.5rem;
    transition: transform var(--transition-slow);
}

.branding-gradient {
    background: linear-gradient(135deg, #2b0b4f 0%, #7b2cbf 100%);
}

.branding-gradient2 {
    background: linear-gradient(135deg, #120e36 0%, #3a0ca3 100%);
}

.video-gradient {
    background: linear-gradient(135deg, #093c44 0%, #00b4d8 100%);
}

.video-gradient2 {
    background: linear-gradient(135deg, #052b2f 0%, #0077b6 100%);
}

.presentation-gradient {
    background: linear-gradient(135deg, #480f24 0%, #b5179e 100%);
}

.presentation-gradient2 {
    background: linear-gradient(135deg, #3d0014 0%, #7209b7 100%);
}

.placeholder-icon {
    filter: drop-shadow(0 4px 10px rgba(0,0,0,0.3));
    animation: pulseIcon 4s infinite alternate;
}

@keyframes pulseIcon {
    0% { transform: scale(1); }
    100% { transform: scale(1.1); }
}

.project-tag-badge {
    position: absolute;
    top: 15px;
    inset-inline-start: 15px;
    background: rgba(7, 4, 13, 0.7);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(5px);
    color: var(--accent-blue);
    padding: 5px 12px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 700;
    z-index: 10;
}

.project-info {
    padding: 24px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project-title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
    line-height: 1.4;
    transition: color var(--transition-fast);
}

.portfolio-item:hover .project-title {
    color: var(--accent-blue);
}

.project-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    flex-grow: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.btn-text-link {
    color: var(--accent-purple);
    font-weight: 700;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    align-self: flex-start;
    transition: var(--transition-fast);
}

.btn-text-link:hover {
    color: var(--accent-blue);
    transform: translateX(-5px);
}

html[lang="en"] .btn-text-link:hover {
    transform: translateX(5px);
}

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

.portfolio-item:hover .project-gradient-placeholder,
.portfolio-item:hover .project-img-cover {
    transform: scale(1.06);
}

/* ==========================================================================
   Experience Timeline
   ========================================================================== */
.resume-section {
    padding: 100px 0;
}

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

.timeline::after {
    content: '';
    position: absolute;
    width: 2px;
    background: linear-gradient(180deg, var(--accent-purple), var(--accent-blue), transparent);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -1px;
}

.timeline-item {
    padding: 10px 40px;
    position: relative;
    width: 50%;
}

.timeline-item.right {
    left: 50%;
}

.timeline-item.left {
    left: 0;
}

.timeline-dot {
    position: absolute;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--bg-primary);
    border: 3px solid var(--accent-purple);
    top: 25px;
    z-index: 10;
    box-shadow: 0 0 10px var(--accent-purple-glow);
    transition: var(--transition-fast);
}

.timeline-item.right .timeline-dot {
    left: -9px;
}

.timeline-item.left .timeline-dot {
    right: -9px;
}

.timeline-item:hover .timeline-dot {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
    box-shadow: 0 0 15px var(--accent-blue-glow);
    transform: scale(1.2);
}

.timeline-content {
    position: relative;
    padding: 24px;
}

.timeline-date {
    display: inline-block;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--glass-border);
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--accent-blue);
    margin-bottom: 12px;
}

.timeline-item-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.timeline-item-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

@media (max-width: 768px) {
    .timeline::after {
        left: 31px;
    }
    
    .timeline-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
    }
    
    .timeline-item.right {
        left: 0;
    }
    
    .timeline-item.left .timeline-dot,
    .timeline-item.right .timeline-dot {
        left: 22px;
        right: auto;
    }
}

/* ==========================================================================
   Testimonials Slider
   ========================================================================== */
.testimonials-section {
    padding: 100px 0;
}

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

.testimonials-slider {
    position: relative;
    height: 280px;
}

.testimonial-card {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transform: scale(0.95);
    transition: opacity 0.6s ease, transform 0.6s ease, visibility 0.6s ease;
    display: flex;
    flex-direction: column;
    justify-content: center;
    text-align: center;
    padding: 40px;
}

.testimonial-card.active {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
}

.stars {
    font-size: 1.2rem;
    margin-bottom: 15px;
    letter-spacing: 2px;
}

.testimonial-text {
    font-size: 1.15rem;
    color: var(--text-secondary);
    font-style: italic;
    margin-bottom: 25px;
}

.testimonial-author {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.author-name {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--text-primary);
}

.author-job {
    font-size: 0.85rem;
    color: var(--accent-blue);
    font-weight: 600;
}

.slider-controls {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 20px;
}

.slider-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.slider-btn:hover {
    color: var(--accent-purple);
    border-color: var(--accent-purple);
    background: rgba(157, 78, 221, 0.05);
}

@media (max-width: 768px) {
    .testimonials-slider {
        height: 380px;
    }
}

/* ==========================================================================
   Contact Section & Glass Form
   ========================================================================== */
.contact-section {
    padding: 100px 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 50px;
    align-items: center;
}

.contact-desc {
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.contact-details-list {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.contact-detail-item {
    display: flex;
    align-items: center;
    gap: 20px;
}

.contact-icon-wrapper {
    width: 50px;
    height: 50px;
    border-radius: var(--border-radius-sm);
    background: rgba(157, 78, 221, 0.08);
    border: 1px solid rgba(157, 78, 221, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-purple);
}

.contact-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    display: block;
    margin-bottom: 2px;
}

.contact-link {
    font-size: 1.05rem;
    font-weight: 700;
}

.contact-link:hover {
    color: var(--accent-blue);
}

/* Glass Form styling */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea {
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-sm);
    padding: 12px 18px;
    color: var(--text-primary);
    outline: none;
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    background: rgba(255,255,255,0.06);
    border-color: var(--accent-purple);
    box-shadow: 0 0 10px var(--accent-purple-glow);
}

/* Feedback Notifications */
.form-feedback {
    padding: 12px 18px;
    border-radius: var(--border-radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    margin-top: 15px;
}

.success-feedback {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #34d399;
}

.error-feedback {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #f87171;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.glass-footer {
    background: rgba(7, 4, 13, 0.8);
    border-top: 1px solid var(--glass-border);
    padding: 80px 0 30px 0;
    position: relative;
    backdrop-filter: blur(10px);
}
body.light-theme .glass-footer {
    background: rgba(233, 236, 245, 0.85);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 50px;
}

.footer-desc {
    color: var(--text-secondary);
    margin-top: 15px;
    max-width: 320px;
}

.footer-title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer-links-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links-list a {
    color: var(--text-secondary);
    font-weight: 600;
}

.footer-links-list a:hover {
    color: var(--accent-blue);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 30px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ==========================================================================
   Premium Lightbox Modal
   ========================================================================== */
.lightbox-modal {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.lightbox-modal.open {
    opacity: 1;
    visibility: visible;
}

.lightbox-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(7, 4, 13, 0.85);
    backdrop-filter: blur(8px);
}

.lightbox-content-wrapper {
    position: relative;
    z-index: 2;
    width: 90%;
    max-width: 850px;
    padding: 0;
    overflow: hidden;
    transform: scale(0.95);
    transition: transform var(--transition-slow);
}

.lightbox-modal.open .lightbox-content-wrapper {
    transform: scale(1);
}

.lightbox-close-btn {
    position: absolute;
    top: 15px;
    right: 15px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    line-height: 1;
}

.lightbox-close-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    color: var(--accent-blue);
}

.lightbox-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    height: 480px;
}

.lightbox-media {
    width: 100%;
    height: 100%;
    position: relative;
}

.lightbox-info {
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    height: 100%;
}

#lightbox-title {
    font-size: 1.5rem;
    font-weight: 800;
    margin-top: 10px;
    margin-bottom: 15px;
}

#lightbox-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 25px;
}

.lightbox-details-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.detail-box {
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--glass-border);
    padding: 12px;
    border-radius: var(--border-radius-sm);
}

.detail-box-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 700;
    display: block;
    margin-bottom: 2px;
}

.detail-box-val {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent-blue);
}

@media (max-width: 768px) {
    .lightbox-body {
        grid-template-columns: 1fr;
        grid-template-rows: 200px 1fr;
        height: auto;
        max-height: 90vh;
        overflow-y: auto;
    }
    
    .lightbox-info {
        padding: 24px;
    }
}

/* ==========================================================================
   Scroll to Top & Reveal System
   ========================================================================== */
.scroll-btn {
    position: fixed;
    bottom: 30px;
    inset-inline-end: 30px;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-purple), var(--accent-blue));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 700;
    box-shadow: 0 4px 15px var(--accent-purple-glow);
    z-index: 99;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-fast), visibility var(--transition-fast), transform var(--transition-fast);
}

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

.scroll-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px var(--accent-blue-glow);
}

/* Reveal Elements on Scroll */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* Spin animation for spinner */
@keyframes spin {
    100% { transform: rotate(360deg); }
}

/* ==========================================================================
   Responsive Grid Systems & Media Queries
   ========================================================================== */
@media (max-width: 1200px) {
    .hero-title { font-size: 2.6rem; }
}

@media (max-width: 991px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    .hero-subtitle {
        margin: 0 auto 30px auto;
    }
    
    .hero-btns {
        justify-content: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .hero-image-container {
        order: -1;
        margin-bottom: 20px;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-desc {
        margin: 15px auto 0 auto;
    }
}

@media (max-width: 576px) {
    /* Typography */
    .hero-title { font-size: 2rem; line-height: 1.3; }
    .hero-subtitle { font-size: 1.05rem; }
    .section-title { font-size: 2rem; margin-bottom: 30px; }
    
    /* Layout & Spacing */
    .section { padding: 60px 0; }
    .portfolio-grid { grid-template-columns: 1fr; gap: 20px; }
    
    /* Hero Section */
    .hero-btns { flex-direction: column; width: 100%; gap: 15px; }
    .hero-btns .btn-primary, .hero-btns .btn-secondary { width: 100%; text-align: center; justify-content: center; }
    .glass-frame { width: 100%; max-width: 260px; height: 340px; margin: 0 auto; }
    
    /* Cards and Containers */
    .glass-card { padding: 25px 20px; }
    .about-stats { grid-template-columns: repeat(2, 1fr); gap: 15px; }
    .stat-card { padding: 15px; }
    .stat-number { font-size: 2rem; }
    
    /* Portfolio */
    .project-info { padding: 20px 15px; }
    .project-title { font-size: 1.15rem; }
    
    /* Contact */
    .contact-details-list { gap: 20px; }
    .contact-detail-item { flex-direction: column; text-align: center; align-items: center; }
    .contact-icon-wrapper { margin-bottom: 10px; margin-inline-end: 0; }
    .contact-form-container { padding: 25px 15px; }
    
    /* Form Elements */
    .form-group input, .form-group textarea { padding: 12px 15px; font-size: 0.95rem; }
    
    /* Footer */
    .footer-grid { gap: 30px; }
    .footer-links-list { display: flex; flex-direction: column; gap: 10px; align-items: center; }
}

@media (max-width: 400px) {
    .hero-title { font-size: 1.75rem; }
    .about-stats { grid-template-columns: 1fr; }
    .glass-frame { max-width: 230px; height: 300px; }
}


/* ==========================================================================
   Premium Video Play Overlay & Hover Effects
   ========================================================================== */
.video-play-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(7, 4, 13, 0.3);
    opacity: 0.9;
    transition: all 0.4s ease;
    z-index: 2;
    pointer-events: none;
}

.play-btn-circle {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--accent-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(0, 245, 212, 0.4);
    border: 2px solid rgba(255, 255, 255, 0.25);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    transform: scale(1);
}

.play-btn-circle svg {
    margin-inline-start: 4px;
    fill: #07040d;
    stroke: none;
    transition: all 0.4s ease;
}

/* Dynamic Hover and Focus Interaction */
.portfolio-item:hover .video-play-overlay {
    background: rgba(7, 4, 13, 0.15);
    opacity: 1;
}

.portfolio-item:hover .play-btn-circle {
    background: #ffffff;
    transform: scale(1.15);
    box-shadow: 0 6px 25px rgba(255, 255, 255, 0.5);
    border-color: #00f5d4;
}

.portfolio-item:hover .play-btn-circle svg {
    transform: scale(1.1);
    fill: #00f5d4;
}