/* ========================================
   CSS VARIABLES & DESIGN SYSTEM
   ======================================== */

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #13131a;
    --bg-card: #1a1a24;
    --text-primary: #ffffff;
    --text-secondary: #b4b4c8;
    --accent-primary: #ff006e;
    --accent-secondary: #00f5ff;
    --accent-tertiary: #8338ec;
    --gradient-1: linear-gradient(135deg, #ff006e 0%, #8338ec 100%);
    --gradient-2: linear-gradient(135deg, #00f5ff 0%, #3a86ff 100%);
    --shadow-glow: 0 0 30px rgba(255, 0, 110, 0.3);

    --font-primary: 'Inter', 'Outfit', sans-serif;
    --font-arabic: 'Cairo', sans-serif;

    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 9999px;

    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

[data-theme="light"] {
    --bg-primary: #f8f9fa;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --text-primary: #1a1a24;
    --text-secondary: #4a4a5e;
    --shadow-glow: 0 0 30px rgba(131, 56, 236, 0.2);
}

[lang="ar"] {
    font-family: var(--font-arabic);
}

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

html { scroll-behavior: smooth; }

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

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

.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: background var(--transition-normal);
}

[data-theme="light"] .navbar {
    background: rgba(255, 255, 255, 0.9);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
}

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

.logo .highlight {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-1);
    transition: width var(--transition-fast);
}

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

.nav-controls {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.nav-controls button {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 1rem;
}

.nav-controls button:hover {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

#mobile-menu-btn { display: none; }

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

#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    position: relative;
    overflow: hidden;
}

#hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(255, 0, 110, 0.15) 0%, transparent 70%);
    animation: float 8s ease-in-out infinite;
}

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

.hero-text { animation: fadeInUp 1s ease; }

.badge {
    display: inline-block;
    background: rgba(255, 0, 110, 0.1);
    border: 1px solid var(--accent-primary);
    color: var(--accent-primary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
    animation: pulse 2s ease-in-out infinite;
}

.hero-text h1 {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-text h2 {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.hero-text p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.cta-group {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

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

.btn-primary {
    background: var(--gradient-1);
    color: white;
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 40px rgba(255, 0, 110, 0.4);
}

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

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

/* Resume Button - Navbar */
.btn-resume {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.45rem 1.1rem;
    border-radius: var(--radius-full);
    background: transparent;
    border: 1.5px solid var(--accent-primary);
    color: var(--accent-primary);
    font-size: 0.88rem;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-resume:hover {
    background: var(--accent-primary);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 18px rgba(255, 0, 110, 0.35);
}

.btn-resume i { font-size: 0.75rem; }

/* Resume Button - Hero */
.btn-resume-hero {
    background: transparent;
    border: 2px solid var(--accent-primary);
    color: var(--accent-primary);
}

.btn-resume-hero:hover {
    background: var(--accent-primary);
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 8px 28px rgba(255, 0, 110, 0.35);
}

.hero-image {
    position: relative;
    animation: fadeInRight 1s ease;
}

.image-frame {
    position: relative;
    width: 400px;
    height: 400px;
    margin: 0 auto;
}

.image-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    border: 4px solid transparent;
    background: var(--gradient-1);
    padding: 4px;
    box-shadow: 0 0 50px rgba(255, 0, 110, 0.5);
}

.floating-shape {
    position: absolute;
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

.shape-1 {
    width: 100px; height: 100px;
    background: var(--gradient-2);
    opacity: 0.3;
    top: -20px; left: -20px;
}

.shape-2 {
    width: 80px; height: 80px;
    background: var(--gradient-1);
    opacity: 0.3;
    bottom: -10px; right: -10px;
    animation-delay: 1s;
}

/* ========================================
   SECTION TITLES
   ======================================== */

.section-title {
    font-size: 3rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

#about { background: var(--bg-secondary); }

.about-grid {
    max-width: 900px;
    margin: 0 auto;
}

.about-text p {
    font-size: 1.15rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.skills-section-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

/* Competency Grid */
.competency-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
    margin-bottom: var(--spacing-md);
}

.competency-item {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-md);
    padding: 0.85rem 1.1rem;
    transition: all var(--transition-fast);
}

.competency-item:hover {
    border-color: var(--accent-primary);
    box-shadow: 0 0 16px rgba(255, 0, 110, 0.15);
    transform: translateY(-2px);
}

.competency-label {
    display: block;
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--accent-secondary);
    margin-bottom: 0.25rem;
}

.competency-detail {
    display: block;
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Education Card */
.education-card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    margin-top: var(--spacing-md);
    transition: all var(--transition-normal);
}

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

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

.education-header i {
    font-size: 2rem;
    color: var(--accent-primary);
}

.education-card h3 {
    color: var(--text-primary);
    font-size: 1.3rem;
}

.education-card h4 {
    color: var(--accent-secondary);
    margin-bottom: 0.5rem;
}

.education-card p {
    font-size: 1rem;
    margin-bottom: 0.2rem;
}

/* ========================================
   CARD BASE
   ======================================== */

.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 50px rgba(255, 0, 110, 0.2);
}

.card-content { padding: var(--spacing-md); }

.card-content h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.card-content p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ========================================
   TIMELINE (EXPERIENCE)
   ======================================== */

.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding-left: 2.5rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 10px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent-primary), var(--accent-tertiary), var(--accent-secondary));
    opacity: 0.4;
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-md);
}

.timeline-dot {
    position: absolute;
    left: -2.1rem;
    top: 1.5rem;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent-primary);
    border: 2px solid var(--bg-primary);
    box-shadow: 0 0 10px rgba(255, 0, 110, 0.6);
}

.timeline-dot--vol {
    background: var(--accent-secondary);
    box-shadow: 0 0 10px rgba(0, 245, 255, 0.5);
}

.timeline-card {
    overflow: visible;
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    padding: var(--spacing-md) var(--spacing-md) 0.5rem;
}

.timeline-header h3 {
    font-size: 1.15rem;
    color: var(--text-primary);
    font-weight: 700;
}

.timeline-org {
    color: var(--accent-secondary);
    font-size: 0.9rem;
    margin-top: 0.2rem;
}

.timeline-badge {
    background: rgba(255, 0, 110, 0.12);
    border: 1px solid rgba(255, 0, 110, 0.3);
    color: var(--accent-primary);
    padding: 0.3rem 0.8rem;
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 600;
    white-space: nowrap;
    flex-shrink: 0;
}

.timeline-bullets {
    list-style: none;
    padding: 0.5rem var(--spacing-md) var(--spacing-md);
}

.timeline-bullets li {
    color: var(--text-secondary);
    font-size: 0.92rem;
    line-height: 1.6;
    padding: 0.25rem 0 0.25rem 1.2rem;
    position: relative;
}

.timeline-bullets li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
    font-size: 0.8rem;
}

.vol-tag {
    display: inline-block;
    background: rgba(0, 245, 255, 0.1);
    border: 1px solid rgba(0, 245, 255, 0.3);
    color: var(--accent-secondary);
    padding: 0.1rem 0.6rem;
    border-radius: var(--radius-full);
    font-size: 0.72rem;
    font-weight: 600;
    margin-left: 0.5rem;
    vertical-align: middle;
}

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

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.project-card { overflow: visible; }

.project-icon-area {
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3.5rem;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 0.75rem;
}

.proj-tag {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: var(--text-secondary);
    padding: 0.2rem 0.65rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.3px;
}

/* ========================================
   AWARDS
   ======================================== */

.awards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-md);
    max-width: 900px;
    margin: 0 auto;
}

.award-card {
    display: flex;
    align-items: center;
    gap: 1.2rem;
    padding: 1.5rem;
    overflow: visible;
}

.award-icon {
    font-size: 2rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    flex-shrink: 0;
}

.award-silver {
    background: linear-gradient(135deg, #c0c0c0, #e8e8e8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.award-bronze {
    background: linear-gradient(135deg, #cd7f32, #e8a96a);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.award-content h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.2rem;
}

.award-content p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    margin-bottom: 0.3rem;
}

.award-date {
    font-size: 0.78rem;
    color: var(--accent-secondary);
    font-weight: 600;
}

/* ========================================
   VIDEO SHOWCASE
   ======================================== */

.video-carousel {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.video-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-normal);
}

.hover-scale:hover { transform: translateY(-6px); }

.card-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
}

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

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

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

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-lg);
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.social-links a {
    width: 50px;
    height: 50px;
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    font-size: 1.5rem;
    transition: all var(--transition-fast);
}

.social-links a:hover {
    background: var(--gradient-1);
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

#contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

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

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

.form-group input,
.form-group textarea {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    padding: 1rem;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(255, 0, 110, 0.1);
}

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

footer {
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

footer p { color: var(--text-secondary); }

/* ========================================
   RTL SUPPORT
   ======================================== */

[dir="rtl"] { direction: rtl; }
[dir="rtl"] .nav-links { flex-direction: row-reverse; }
[dir="rtl"] .cta-group { flex-direction: row-reverse; }
[dir="rtl"] .nav-controls { flex-direction: row-reverse; }
[dir="rtl"] .timeline { padding-left: 0; padding-right: 2.5rem; }
[dir="rtl"] .timeline::before { left: auto; right: 10px; }
[dir="rtl"] .timeline-dot { left: auto; right: -2.1rem; }
[dir="rtl"] .timeline-bullets li { padding-left: 0; padding-right: 1.2rem; }
[dir="rtl"] .timeline-bullets li::before { left: auto; right: 0; }
[dir="rtl"] .vol-tag { margin-left: 0; margin-right: 0.5rem; }

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

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

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

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* ========================================
   PRELOADER
   ======================================== */

#preloader {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100vh;
    background: var(--bg-primary);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.5s ease-out, visibility 0.5s ease-out;
}

#preloader.fade-out { opacity: 0; visibility: hidden; }

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

.loader-logo {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 2rem;
    letter-spacing: 2px;
    animation: loaderPulse 1.5s infinite;
}

.loader-logo .highlight {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.loader-bar {
    width: 200px;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    overflow: hidden;
    margin: 0 auto 1rem auto;
}

.loader-progress {
    width: 0%;
    height: 100%;
    background: var(--gradient-1);
    border-radius: 4px;
    animation: loadingBar 2.5s ease-in-out forwards;
}

.loader-text { color: var(--text-secondary); font-size: 0.9rem; letter-spacing: 1px; }

@keyframes loadingBar {
    0% { width: 0%; }
    50% { width: 70%; }
    100% { width: 100%; }
}

@keyframes loaderPulse {
    0% { opacity: 0.7; transform: scale(0.98); }
    50% { opacity: 1; transform: scale(1.02); }
    100% { opacity: 0.7; transform: scale(0.98); }
}

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

@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-text h1 { font-size: 2.5rem; }
    .hero-text h2 { font-size: 1.5rem; }

    .image-frame { width: 280px; height: 280px; }

    .nav-links { display: none; }
    #mobile-menu-btn { display: block; }

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

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

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

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

    .timeline { padding-left: 1.5rem; }
    .timeline-dot { left: -1.6rem; }
    .timeline-header { flex-direction: column; }

    .cta-group { justify-content: center; }
}

@media (max-width: 480px) {
    .awards-grid { grid-template-columns: 1fr; }
}

/* Mobile nav open */
.nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    border-bottom: 1px solid rgba(255,255,255,0.1);
    gap: var(--spacing-sm);
    z-index: 999;
}