/* ─── CSS Variables ─────────────────────────────────────────────────────────── */
:root {
  --bg-primary: #0a0f1e;
  --bg-secondary: #0d1526;
  --bg-card: #111827;
  --bg-card-hover: #1a2538;
  --accent: #3b82f6;
  --accent-bright: #60a5fa;
  --accent-glow: rgba(59, 130, 246, 0.25);
  --text-primary: #f0f6ff;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border: rgba(99, 179, 237, 0.12);
  --border-hover: rgba(59, 130, 246, 0.4);
  --gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
  --gradient-bg: linear-gradient(135deg, #0a0f1e 0%, #0d1a33 50%, #0a0f1e 100%);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-accent: 0 0 30px rgba(59, 130, 246, 0.2);
  --radius: 12px;
  --radius-lg: 20px;
  --nav-height: 70px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
  --bg-primary: #f0f4ff;
  --bg-secondary: #e8edf8;
  --bg-card: #ffffff;
  --bg-card-hover: #f5f8ff;
  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --border: rgba(59, 130, 246, 0.15);
  --border-hover: rgba(59, 130, 246, 0.4);
  --gradient-bg: linear-gradient(135deg, #dbeafe 0%, #ede9fe 50%, #dbeafe 100%);
  --shadow: 0 4px 24px rgba(59, 130, 246, 0.1);
}

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

html {
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--accent) var(--bg-secondary);
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; }

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

[dir="rtl"] body { font-family: 'Cairo', sans-serif; }

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

section { padding: 90px 0; }

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800;
  text-align: center;
  margin-bottom: 60px;
  position: relative;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: var(--gradient);
  border-radius: 2px;
  margin: 12px auto 0;
}

/* ─── Preloader ─────────────────────────────────────────────────────────────── */
#preloader {
  position: fixed; inset: 0;
  background: var(--bg-primary);
  z-index: 9999;
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.5s, visibility 0.5s;
}

#preloader.hidden { opacity: 0; visibility: hidden; }

.preloader-inner {
  display: flex; flex-direction: column; align-items: center; gap: 20px;
}

.preloader-logo {
  font-size: 2rem; font-weight: 800;
  background: var(--gradient); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
  letter-spacing: 2px;
}

.preloader-bar {
  width: 200px; height: 3px;
  background: var(--border);
  border-radius: 2px; overflow: hidden;
}

.preloader-bar::after {
  content: '';
  display: block; width: 40%;
  height: 100%; background: var(--gradient);
  border-radius: 2px;
  animation: loading 1s ease-in-out infinite alternate;
}

@keyframes loading {
  from { transform: translateX(0); }
  to { transform: translateX(380%); }
}

/* ─── Navbar ────────────────────────────────────────────────────────────────── */
#navbar {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--nav-height);
  z-index: 1000;
  transition: all var(--transition);
  padding: 0 24px;
}

#navbar.scrolled {
  background: rgba(10, 15, 30, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow);
}

[data-theme="light"] #navbar.scrolled {
  background: rgba(240, 244, 255, 0.85);
}

.nav-inner {
  max-width: 1200px; margin: 0 auto;
  height: 100%;
  display: flex; align-items: center; justify-content: space-between;
  gap: 20px;
}

.nav-logo {
  font-size: 1.2rem; font-weight: 800;
  background: var(--gradient); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
  white-space: nowrap; flex-shrink: 0;
}

#nav-menu {
  display: flex; align-items: center; gap: 8px;
}

.nav-link {
  padding: 6px 12px; border-radius: 8px;
  font-size: 0.9rem; font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition);
  position: relative;
  white-space: nowrap;
}

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

.nav-controls {
  display: flex; align-items: center; gap: 8px; flex-shrink: 0;
}

.lang-switcher {
  display: flex; gap: 4px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px; padding: 3px;
}

.lang-btn {
  padding: 4px 10px; border-radius: 6px;
  font-size: 0.8rem; font-weight: 600;
  color: var(--text-muted);
  transition: all var(--transition);
}

.lang-btn.active, .lang-btn:hover {
  background: var(--gradient);
  color: #fff;
}

#theme-toggle {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
}

#theme-toggle:hover {
  color: var(--accent-bright);
  border-color: var(--border-hover);
}

#burger {
  display: none; flex-direction: column; gap: 5px;
  width: 32px; padding: 4px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
}

#burger span {
  display: block; height: 2px;
  background: var(--text-secondary);
  border-radius: 1px;
  transition: all var(--transition);
}

#burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
#burger.open span:nth-child(2) { opacity: 0; }
#burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ─── Hero ──────────────────────────────────────────────────────────────────── */
#hero {
  min-height: 100vh;
  display: flex; align-items: center;
  position: relative; overflow: hidden;
  padding-top: var(--nav-height);
  background: var(--gradient-bg);
}

#particles-canvas {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  pointer-events: none;
}

.hero-content {
  position: relative; z-index: 1;
  max-width: 1200px; margin: 0 auto;
  padding: 60px 24px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 60px; align-items: center;
}

.hero-text { max-width: 680px; }

.hero-badges {
  display: flex; flex-wrap: wrap; gap: 10px;
  margin-bottom: 24px;
}

.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 14px; border-radius: 20px;
  font-size: 0.8rem; font-weight: 600;
  border: 1px solid;
}

.badge-available {
  background: rgba(16, 185, 129, 0.12);
  border-color: rgba(16, 185, 129, 0.3);
  color: #34d399;
}

.badge-available .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: #34d399;
  animation: pulse-dot 1.5s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

.badge-live {
  background: rgba(59, 130, 246, 0.12);
  border-color: rgba(59, 130, 246, 0.3);
  color: var(--accent-bright);
}

.hero-name {
  font-size: clamp(2.2rem, 6vw, 4rem);
  font-weight: 800; line-height: 1.1;
  margin-bottom: 16px;
  background: var(--gradient);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-role {
  font-size: clamp(1.1rem, 3vw, 1.5rem);
  font-weight: 600; margin-bottom: 12px;
  color: var(--text-primary);
  min-height: 2em;
  display: flex; align-items: center; gap: 8px;
}

#typed-role {
  background: var(--gradient);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

.cursor {
  display: inline-block; width: 3px; height: 1.1em;
  background: var(--accent);
  border-radius: 2px;
  animation: blink 1s step-end infinite;
  vertical-align: middle;
}

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

.hero-desc {
  font-size: 1.05rem; color: var(--text-secondary);
  margin-bottom: 32px; max-width: 540px; line-height: 1.7;
}

.hero-cta {
  display: flex; flex-wrap: wrap; gap: 14px;
  margin-bottom: 36px;
}

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 26px; border-radius: 10px;
  font-size: 0.95rem; font-weight: 600;
  transition: all var(--transition);
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--gradient); color: #fff;
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(59, 130, 246, 0.5);
}

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

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

.btn-mode {
  padding: 10px 22px;
  background: var(--bg-card);
  border: 1px solid var(--border-hover);
  color: var(--accent-bright);
  border-radius: 10px;
  font-size: 0.9rem; font-weight: 600;
  transition: all var(--transition);
}

.btn-mode:hover {
  background: var(--accent-glow);
  box-shadow: var(--shadow-accent);
}

.hero-socials {
  display: flex; gap: 12px;
}

.social-link {
  width: 42px; height: 42px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted);
  font-size: 1rem;
  transition: all var(--transition);
}

.social-link:hover {
  color: var(--accent-bright);
  border-color: var(--border-hover);
  background: var(--accent-glow);
  transform: translateY(-3px);
}

.hero-visual {
  display: flex; align-items: center; justify-content: center;
}

.avatar-ring {
  position: relative;
  width: 260px; height: 260px;
}

.avatar-ring::before {
  content: '';
  position: absolute; inset: -4px;
  border-radius: 50%;
  background: var(--gradient);
  animation: rotate 6s linear infinite;
}

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

.avatar-inner {
  position: absolute; inset: 4px;
  border-radius: 50%;
  background: var(--bg-secondary);
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
  z-index: 1;
}

.avatar-placeholder {
  font-size: 5rem;
  background: var(--gradient);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
  user-select: none;
}

/* ─── About ─────────────────────────────────────────────────────────────────── */
#about { background: var(--bg-secondary); }

.about-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 60px; align-items: center;
}

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

.highlights {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 16px; margin-top: 32px;
}

.highlight-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  transition: all var(--transition);
}

.highlight-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-accent);
}

.highlight-icon {
  font-size: 1.8rem; margin-bottom: 10px;
  background: var(--gradient);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

.highlight-card h4 {
  font-size: 0.95rem; font-weight: 700;
  color: var(--text-primary); margin-bottom: 4px;
}

.highlight-card p {
  font-size: 0.82rem; color: var(--text-muted);
}

/* ─── Experience Timeline ────────────────────────────────────────────────────── */
#experience { background: var(--bg-primary); }

.timeline {
  position: relative;
  max-width: 800px; margin: 0 auto;
  padding: 0 20px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%; transform: translateX(-50%);
  top: 0; bottom: 0; width: 2px;
  background: linear-gradient(to bottom, var(--accent), rgba(59,130,246,0.1));
}

[dir="rtl"] .timeline::before { left: auto; right: 50%; transform: translateX(50%); }

.timeline-item {
  position: relative;
  width: 45%;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 40px;
  transition: all var(--transition);
}

.timeline-item:nth-child(odd) { margin-left: 5%; }
.timeline-item:nth-child(even) { margin-left: 50%; }

[dir="rtl"] .timeline-item:nth-child(odd) { margin-left: 0; margin-right: 5%; }
[dir="rtl"] .timeline-item:nth-child(even) { margin-left: 0; margin-right: 50%; }

.timeline-item::before {
  content: '';
  position: absolute;
  width: 14px; height: 14px;
  background: var(--gradient); border-radius: 50%;
  top: 30px;
  box-shadow: 0 0 12px var(--accent);
}

.timeline-item:nth-child(odd)::before {
  right: -8%; top: 26px;
}

.timeline-item:nth-child(even)::before {
  left: -8%; top: 26px;
}

[dir="rtl"] .timeline-item:nth-child(odd)::before { right: auto; left: -8%; }
[dir="rtl"] .timeline-item:nth-child(even)::before { left: auto; right: -8%; }

.timeline-item:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-accent);
}

.exp-header { margin-bottom: 12px; }

.exp-role {
  font-size: 1rem; font-weight: 700;
  color: var(--text-primary); margin-bottom: 4px;
}

.exp-company {
  font-size: 0.9rem; font-weight: 600;
  background: var(--gradient);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

.exp-meta {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin: 10px 0;
  font-size: 0.8rem; color: var(--text-muted);
}

.exp-meta span { display: flex; align-items: center; gap: 4px; }

.exp-achievements { margin: 12px 0; }

.exp-achievements li {
  font-size: 0.85rem; color: var(--text-secondary);
  padding: 4px 0; padding-left: 16px;
  position: relative;
}

.exp-achievements li::before {
  content: '▸';
  position: absolute; left: 0;
  color: var(--accent);
}

[dir="rtl"] .exp-achievements li { padding-left: 0; padding-right: 16px; }
[dir="rtl"] .exp-achievements li::before { left: auto; right: 0; }

.tech-stack {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-top: 12px;
}

.tech-badge {
  padding: 3px 10px; border-radius: 6px;
  font-size: 0.75rem; font-weight: 600;
  background: var(--accent-glow);
  color: var(--accent-bright);
  border: 1px solid rgba(59, 130, 246, 0.2);
}

/* ─── Projects ──────────────────────────────────────────────────────────────── */
#projects { background: var(--bg-secondary); }

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition);
  display: flex; flex-direction: column;
  gap: 14px;
}

.project-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-6px);
  box-shadow: var(--shadow-accent);
}

.project-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: var(--gradient);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; color: #fff;
}

.project-card h3 {
  font-size: 1rem; font-weight: 700;
  color: var(--text-primary);
}

.project-card p {
  font-size: 0.87rem; color: var(--text-secondary);
  line-height: 1.6; flex: 1;
}

.project-footer {
  display: flex; align-items: center;
  justify-content: space-between; margin-top: auto;
}

.btn-github {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px; border-radius: 8px;
  font-size: 0.82rem; font-weight: 600;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: all var(--transition);
}

.btn-github:hover {
  color: var(--accent-bright);
  border-color: var(--border-hover);
  background: var(--accent-glow);
}

/* ─── Skills ────────────────────────────────────────────────────────────────── */
#skills { background: var(--bg-primary); }

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
}

.skill-category {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: border-color var(--transition);
}

.skill-category:hover { border-color: var(--border-hover); }

.skill-category h3 {
  font-size: 0.9rem; font-weight: 700;
  color: var(--accent-bright);
  text-transform: uppercase; letter-spacing: 1px;
  margin-bottom: 16px;
  display: flex; align-items: center; gap: 8px;
}

.skill-category h3 i { font-size: 1rem; }

.skill-item { margin-bottom: 14px; }

.skill-label {
  display: flex; justify-content: space-between;
  font-size: 0.85rem; color: var(--text-secondary);
  margin-bottom: 6px; font-weight: 500;
}

.skill-bar {
  height: 6px; background: var(--bg-secondary);
  border-radius: 3px; overflow: hidden;
}

.skill-fill {
  height: 100%; width: 0;
  border-radius: 3px;
  background: var(--gradient);
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.icon-grid {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin-top: 4px;
}

.icon-chip {
  padding: 5px 12px; border-radius: 8px;
  font-size: 0.8rem; font-weight: 600;
  background: var(--accent-glow);
  color: var(--accent-bright);
  border: 1px solid rgba(59, 130, 246, 0.18);
  transition: all var(--transition);
}

.icon-chip:hover {
  background: rgba(59, 130, 246, 0.25);
  transform: translateY(-2px);
}

/* ─── Contact ────────────────────────────────────────────────────────────────── */
#contact { background: var(--bg-secondary); }

.contact-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 60px; align-items: start;
}

.contact-info h3 {
  font-size: 1.6rem; font-weight: 700;
  margin-bottom: 8px;
  background: var(--gradient);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

.contact-info > p {
  color: var(--text-secondary); margin-bottom: 32px;
}

.contact-items { display: flex; flex-direction: column; gap: 16px; }

.contact-item {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--transition);
  cursor: pointer;
}

.contact-item:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateX(4px);
}

[dir="rtl"] .contact-item:hover { transform: translateX(-4px); }

.contact-item-icon {
  width: 40px; height: 40px; flex-shrink: 0;
  border-radius: 10px; background: var(--gradient);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 1rem;
}

.contact-item-text { flex: 1; min-width: 0; }
.contact-item-text span { font-size: 0.75rem; color: var(--text-muted); display: block; }
.contact-item-text a, .contact-item-text p {
  font-size: 0.88rem; font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.contact-item-text a:hover { color: var(--accent-bright); }

.copy-tooltip {
  font-size: 0.75rem; color: #34d399;
  opacity: 0; transition: opacity var(--transition);
  white-space: nowrap;
}
.copy-tooltip.show { opacity: 1; }

/* Contact Form */
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.form-group { margin-bottom: 20px; }

.form-group label {
  display: block; font-size: 0.85rem;
  font-weight: 600; color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
  width: 100%; padding: 12px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-family: inherit; font-size: 0.9rem;
  transition: border-color var(--transition);
  resize: vertical;
}

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

.form-group textarea { min-height: 130px; }

.btn-submit {
  width: 100%;
  padding: 13px;
  background: var(--gradient);
  color: #fff; font-size: 0.95rem;
  font-weight: 700; border-radius: 10px;
  transition: all var(--transition);
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.3);
}

.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(59, 130, 246, 0.5);
}

/* ─── Footer ────────────────────────────────────────────────────────────────── */
footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border);
  padding: 50px 24px 30px;
}

.footer-inner {
  max-width: 1200px; margin: 0 auto;
  display: grid; grid-template-columns: 2fr 1fr 1fr;
  gap: 40px; margin-bottom: 40px;
}

.footer-brand p {
  color: var(--text-muted); font-size: 0.87rem;
  margin-top: 10px; max-width: 300px; line-height: 1.7;
}

.footer-col h4 {
  font-size: 0.9rem; font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  text-transform: uppercase; letter-spacing: 1px;
}

.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul a {
  font-size: 0.87rem; color: var(--text-muted);
  transition: color var(--transition);
  display: flex; align-items: center; gap: 6px;
}
.footer-col ul a:hover { color: var(--accent-bright); }

.footer-bottom {
  max-width: 1200px; margin: 0 auto;
  padding-top: 24px; border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 16px;
}

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

.footer-lang { display: flex; gap: 6px; }

/* ─── Back to Top ────────────────────────────────────────────────────────────── */
#back-to-top {
  position: fixed; bottom: 106px; right: 32px;
  width: 46px; height: 46px;
  border-radius: 12px;
  background: var(--gradient);
  color: #fff; font-size: 1.1rem;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
  opacity: 0; pointer-events: none;
  transition: all var(--transition);
  z-index: 999;
}

[dir="rtl"] #back-to-top { right: auto; left: 32px; }

#back-to-top.visible {
  opacity: 1; pointer-events: all;
}

#back-to-top:hover { transform: translateY(-4px); }

/* ─── Scroll Animations ──────────────────────────────────────────────────────── */
.fade-in {
  opacity: 0; transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.slide-up {
  opacity: 0; transform: translateY(40px);
  transition: opacity 0.6s ease 0.1s, transform 0.6s ease 0.1s;
}

.slide-left {
  opacity: 0; transform: translateX(-40px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-right {
  opacity: 0; transform: translateX(40px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible,
.slide-up.visible,
.slide-left.visible,
.slide-right.visible {
  opacity: 1; transform: none;
}

/* ─── Responsive ─────────────────────────────────────────────────────────────── */

/* ── Global overflow prevention (applies at all widths) ───────────────────── */
html { overflow-x: hidden; max-width: 100vw; }

/* Long strings wrap rather than overflow card bounds */
.cert-name, .cert-issuer,
.exp-role, .exp-company,
.project-card h3, .project-card p,
.community-card h3, .community-card p,
.contact-item-text a, .contact-item-text p,
.hero-desc, .about-bio {
  word-break: break-word;
  overflow-wrap: break-word;
}

/* ── Tablet (≤900px) ──────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  /* Hero: single column, avatar visible but smaller */
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 50px 24px;
    gap: 36px;
  }
  .hero-visual {
    display: flex;
    order: -1;
    justify-content: center;
  }
  .avatar-ring { width: 200px; height: 200px; }
  .hero-text { max-width: 100%; }
  .hero-desc { max-width: 100%; }
  .hero-badges, .hero-cta, .hero-socials { justify-content: center; }

  /* About */
  .about-grid { grid-template-columns: 1fr; gap: 40px; }

  /* Contact / Footer */
  .contact-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }

  /* Timeline: left-aligned single column */
  .timeline::before { left: 20px; }
  [dir="rtl"] .timeline::before { left: auto; right: 20px; }

  .timeline-item,
  .timeline-item:nth-child(odd),
  .timeline-item:nth-child(even) {
    width: auto; margin-left: 48px; margin-right: 0;
  }
  [dir="rtl"] .timeline-item,
  [dir="rtl"] .timeline-item:nth-child(odd),
  [dir="rtl"] .timeline-item:nth-child(even) {
    margin-left: 0; margin-right: 48px;
  }
  .timeline-item::before { left: -36px !important; right: auto !important; }
  [dir="rtl"] .timeline-item::before { left: auto !important; right: -36px !important; }

  /* Skills: reduce minimum so 2 columns fit without overflow */
  .skills-grid { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }

  /* Certs / community */
  .cert-grid { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
  .community-grid { grid-template-columns: 1fr 1fr; }
}

/* ── Mobile (≤768px) ──────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  :root { --nav-height: 64px; }

  section { padding: 70px 0; }
  .container { padding: 0 16px; }
  .section-title { margin-bottom: 40px; }

  /* ─ Navbar ─ */
  .nav-logo { font-size: 1rem; }
  .lang-btn { padding: 3px 8px; font-size: 0.75rem; }
  #theme-toggle { width: 32px; height: 32px; }
  #burger { display: flex; }

  #nav-menu {
    position: fixed;
    top: var(--nav-height); left: 0; right: 0;
    background: rgba(10, 15, 30, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    gap: 4px;
    transform: translateY(-110%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition);
    border-bottom: 1px solid var(--border);
    z-index: 999;
  }
  [data-theme="light"] #nav-menu { background: rgba(240, 244, 255, 0.97); }
  #nav-menu.open { transform: translateY(0); opacity: 1; pointer-events: all; }
  .nav-link { width: 100%; text-align: center; padding: 10px 12px; }

  /* ─ Hero ─ */
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 40px 16px;
    gap: 28px;
  }
  .hero-visual { display: flex; order: -1; justify-content: center; }
  .avatar-ring { width: 150px; height: 150px; }
  .hero-text { max-width: 100%; }
  .hero-badges { justify-content: center; flex-wrap: wrap; }
  .hero-desc { max-width: 100%; font-size: 0.95rem; margin-bottom: 24px; }
  .hero-cta { flex-direction: column; align-items: stretch; gap: 10px; }
  .btn { justify-content: center; width: 100%; }
  .hero-socials { justify-content: center; flex-wrap: wrap; gap: 8px; }

  /* ─ About ─ */
  .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .highlights { grid-template-columns: 1fr 1fr; }

  /* ─ Timeline ─ */
  .timeline { padding: 0 10px; }
  .timeline::before { left: 16px; }
  [dir="rtl"] .timeline::before { left: auto; right: 16px; }
  .timeline-item,
  .timeline-item:nth-child(odd),
  .timeline-item:nth-child(even) {
    width: auto;
    margin-left: 40px;
    margin-right: 0;
    padding: 16px;
  }
  [dir="rtl"] .timeline-item,
  [dir="rtl"] .timeline-item:nth-child(odd),
  [dir="rtl"] .timeline-item:nth-child(even) {
    margin-left: 0; margin-right: 40px;
  }
  .timeline-item::before {
    width: 12px !important; height: 12px !important;
    left: -28px !important; right: auto !important;
    top: 20px !important;
  }
  [dir="rtl"] .timeline-item::before { left: auto !important; right: -28px !important; }

  /* ─ Projects ─ */
  .projects-grid { grid-template-columns: 1fr; }
  .project-card { padding: 20px; }

  /* ─ Certificates ─ */
  .cert-grid { grid-template-columns: 1fr 1fr; }

  /* ─ Skills ─ */
  .skills-grid { grid-template-columns: 1fr; }
  .skill-category { padding: 18px; }

  /* ─ Community ─ */
  .community-grid { grid-template-columns: 1fr; }
  .community-card { padding: 20px; }

  /* ─ Contact ─ */
  .contact-form { padding: 20px; }
  .contact-item { padding: 12px 14px; }

  /* ─ Footer ─ */
  .footer-inner { grid-template-columns: 1fr; gap: 28px; }
  .footer-brand p { max-width: 100%; }
  .footer-bottom {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 12px;
  }
}

/* ── Small Mobile (≤480px) ────────────────────────────────────────────────── */
@media (max-width: 480px) {
  :root { --nav-height: 60px; }

  section { padding: 56px 0; }
  .container { padding: 0 12px; }

  /* ─ Navbar ─ */
  .nav-logo { font-size: 0.88rem; }
  .lang-btn { padding: 2px 6px; font-size: 0.7rem; }
  .nav-controls { gap: 5px; }
  .lang-switcher { padding: 2px; gap: 2px; }

  /* ─ Hero ─ */
  .hero-content { padding: 32px 12px; gap: 20px; }
  .avatar-ring { width: 120px; height: 120px; }
  .hero-name { font-size: clamp(1.6rem, 8vw, 2.2rem); }
  .hero-role { font-size: clamp(0.95rem, 4.5vw, 1.1rem); min-height: unset; }
  .hero-desc { font-size: 0.88rem; }
  .badge { font-size: 0.7rem; padding: 4px 10px; }
  .social-link { width: 38px; height: 38px; font-size: 0.9rem; }

  /* ─ Section title ─ */
  .section-title { font-size: clamp(1.3rem, 6vw, 1.8rem); margin-bottom: 32px; }

  /* ─ About: 1-col highlights, override inline span-2 ─ */
  .highlights { grid-template-columns: 1fr; }
  .highlight-card { grid-column: span 1 !important; }

  /* ─ Timeline ─ */
  .timeline { padding: 0 6px; }
  .timeline::before { left: 12px; }
  [dir="rtl"] .timeline::before { left: auto; right: 12px; }
  .timeline-item,
  .timeline-item:nth-child(odd),
  .timeline-item:nth-child(even) {
    margin-left: 30px;
    margin-right: 0;
    padding: 14px 12px;
  }
  [dir="rtl"] .timeline-item,
  [dir="rtl"] .timeline-item:nth-child(odd),
  [dir="rtl"] .timeline-item:nth-child(even) {
    margin-left: 0; margin-right: 30px;
  }
  .timeline-item::before {
    width: 10px !important; height: 10px !important;
    left: -20px !important; right: auto !important;
    top: 18px !important;
  }
  [dir="rtl"] .timeline-item::before { left: auto !important; right: -20px !important; }

  /* ─ Projects ─ */
  .project-card { padding: 16px; }

  /* ─ Certificates: 1 column ─ */
  .cert-grid { grid-template-columns: 1fr; }
  .cert-card { padding: 14px; }

  /* ─ Skills ─ */
  .skill-category { padding: 14px; }

  /* ─ Community ─ */
  .community-card { padding: 16px; }

  /* ─ Contact ─ */
  .contact-form { padding: 14px; }
  .contact-item { padding: 10px 12px; gap: 10px; }
  .contact-item-icon { width: 34px; height: 34px; border-radius: 8px; font-size: 0.9rem; }

  /* ─ Back to Top ─ */
  #back-to-top { bottom: 78px; right: 14px; width: 40px; height: 40px; font-size: 1rem; border-radius: 10px; }
  [dir="rtl"] #back-to-top { right: auto; left: 14px; }

  /* ─ Toast: wrap text on small screens ─ */
  #toast { font-size: 0.82rem; padding: 10px 14px; white-space: normal; width: calc(100vw - 24px); max-width: none; }
}

/* ─── Avatar Photo ──────────────────────────────────────────────────────────── */
.avatar-photo {
  width: 100%; height: 100%;
  object-fit: cover;
  border-radius: 50%;
  display: block;
}

.avatar-photo-main,
.avatar-photo-alt {
  position: absolute;
  inset: 0;
  transition: opacity 0.45s ease;
}

.avatar-photo-alt {
  opacity: 0;
  pointer-events: none;
}

.avatar-inner:hover .avatar-photo-main { opacity: 0; }
.avatar-inner:hover .avatar-photo-alt { opacity: 1; }

/* ─── Toast Notification ────────────────────────────────────────────────────── */
#toast {
  position: fixed;
  bottom: 90px;
  left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--bg-card);
  border: 1px solid var(--border-hover);
  color: var(--text-primary);
  padding: 14px 24px;
  border-radius: 12px;
  font-size: 0.9rem; font-weight: 500;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  opacity: 0; pointer-events: none;
  transition: all 0.35s cubic-bezier(0.4,0,0.2,1);
  z-index: 9998;
  white-space: nowrap;
  max-width: calc(100vw - 48px);
  text-align: center;
}

#toast.show {
  opacity: 1; pointer-events: none;
  transform: translateX(-50%) translateY(0);
}

#toast.success {
  border-color: #34d399;
  color: #34d399;
  background: rgba(16, 185, 129, 0.08);
}

#toast.error {
  border-color: #f87171;
  color: #f87171;
  background: rgba(239, 68, 68, 0.08);
}

/* ─── Certificates Section ──────────────────────────────────────────────────── */
#certificates { background: var(--bg-secondary); }

.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 18px;
}

.cert-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex; gap: 14px; align-items: flex-start;
  transition: all var(--transition);
}

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

.cert-icon {
  width: 42px; height: 42px; flex-shrink: 0;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; color: #fff;
}

.cert-icon.ai    { background: linear-gradient(135deg,#3b82f6,#8b5cf6); }
.cert-icon.award { background: linear-gradient(135deg,#f59e0b,#ef4444); }
.cert-icon.data  { background: linear-gradient(135deg,#10b981,#3b82f6); }
.cert-icon.cloud { background: linear-gradient(135deg,#06b6d4,#3b82f6); }
.cert-icon.code  { background: linear-gradient(135deg,#6366f1,#8b5cf6); }
.cert-icon.biz   { background: linear-gradient(135deg,#f97316,#ef4444); }
.cert-icon.tools { background: linear-gradient(135deg,#64748b,#3b82f6); }
.cert-icon.art   { background: linear-gradient(135deg,#ec4899,#8b5cf6); }

.cert-body { flex: 1; min-width: 0; }

.cert-name {
  font-size: 0.88rem; font-weight: 700;
  color: var(--text-primary); line-height: 1.3;
  margin-bottom: 4px;
}

.cert-issuer {
  font-size: 0.78rem; color: var(--text-muted);
  margin-bottom: 8px;
}

.cert-date {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 8px; border-radius: 6px;
  font-size: 0.72rem; font-weight: 600;
  background: var(--accent-glow);
  color: var(--accent-bright);
  border: 1px solid rgba(59,130,246,0.18);
}

/* ─── Community Section ─────────────────────────────────────────────────────── */
#community { background: var(--bg-primary); }

.community-subtitle-text {
  text-align: center;
  color: var(--text-secondary);
  font-size: 1rem;
  margin-top: -40px;
  margin-bottom: 48px;
}

.community-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.community-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex; flex-direction: column; gap: 14px;
  transition: all var(--transition);
  position: relative; overflow: hidden;
}

.community-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--gradient);
  opacity: 0;
  transition: opacity var(--transition);
}

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

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

.community-logo {
  width: 56px; height: 56px;
  border-radius: 14px;
  object-fit: contain;
  background: var(--bg-secondary);
  padding: 6px;
  border: 1px solid var(--border);
}

.community-logo-fallback {
  width: 56px; height: 56px;
  border-radius: 14px;
  background: var(--gradient);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem; color: #fff;
}

.community-header {
  display: flex; align-items: center; gap: 14px;
}

.community-header-text { flex: 1; }

.community-card h3 {
  font-size: 1rem; font-weight: 700;
  color: var(--text-primary);
}

.community-card p {
  font-size: 0.86rem; color: var(--text-secondary);
  line-height: 1.6; flex: 1;
}

.community-footer {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: auto;
}

.community-badge {
  padding: 4px 10px; border-radius: 6px;
  font-size: 0.75rem; font-weight: 700;
  background: rgba(16,185,129,0.12);
  color: #34d399;
  border: 1px solid rgba(16,185,129,0.25);
}

.btn-visit {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px; border-radius: 8px;
  font-size: 0.82rem; font-weight: 600;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: all var(--transition);
}

.btn-visit:hover {
  color: var(--accent-bright);
  border-color: var(--border-hover);
  background: var(--accent-glow);
}

/* ─── M-Coding Brand Section ─────────────────────────────────────────────────── */
.mcoding-brand {
  max-width: 720px;
  margin: 0 auto 40px;
  text-align: center;
}

.mcoding-quote {
  font-size: 1.15rem;
  font-weight: 600;
  font-style: italic;
  color: var(--text-primary);
  line-height: 1.7;
  margin-bottom: 14px;
}

.mcoding-tagline {
  font-size: 1rem;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  margin-bottom: 16px;
}

.mcoding-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.mcoding-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}

.mcoding-link-card {
  display: flex; align-items: center; gap: 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px 20px;
  transition: all var(--transition);
}

.mcoding-link-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-accent);
}

.mcoding-link-icon {
  width: 44px; height: 44px; flex-shrink: 0;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; color: #fff;
  background: var(--gradient);
}

.mcoding-link-text { flex: 1; min-width: 0; }

.mcoding-link-text h4 {
  font-size: 0.92rem; font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.mcoding-link-text span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.lang-tag {
  display: inline-flex; align-items: center; gap: 5px;
}

.lang-tag i {
  font-size: 0.72rem;
  color: var(--accent-bright);
}

.flag-ma {
  width: 15px; height: 10px;
  flex-shrink: 0;
  border-radius: 2px;
  box-shadow: 0 0 0 1px var(--border);
}

.mcoding-link-arrow {
  font-size: 0.8rem;
  color: var(--text-muted);
  flex-shrink: 0;
  transition: color var(--transition);
}

.mcoding-link-card:hover .mcoding-link-arrow { color: var(--accent-bright); }

.mcoding-link-icon.whatsapp  { background: #25D366; }
.mcoding-link-icon.instagram { background: linear-gradient(135deg,#f58529,#dd2a7b,#8134af,#515bd4); }
.mcoding-link-icon.facebook  { background: #1877F2; }
.mcoding-link-icon.telegram  { background: #26A5E4; }
.mcoding-link-icon.x         { background: #000; }
.mcoding-link-icon.linkedin  { background: #0A66C2; }
.mcoding-link-icon.reddit    { background: #FF4500; }

@media (max-width: 600px) {
  .mcoding-grid { grid-template-columns: 1fr; }
  .mcoding-quote { font-size: 1rem; }
}

/* ─── WhatsApp Icon Color ───────────────────────────────────────────────────── */
.social-link.whatsapp:hover { color: #25D366; border-color: #25D366; background: rgba(37,211,102,0.1); }
.contact-item-icon.whatsapp { background: #25D366; }

/* ─── Freelancer Icon ───────────────────────────────────────────────────────── */
.social-link.freelancer:hover { color: #29B2FE; border-color: #29B2FE; background: rgba(41,178,254,0.1); }
.contact-item-icon.freelancer { background: linear-gradient(135deg,#29B2FE,#0e73cc); }

/* ─── CSS var for success ───────────────────────────────────────────────────── */
:root { --success: #10b981; }

/* ─── Responsive additions ──────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .cert-grid { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
  .community-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 600px) {
  .community-grid { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: 1fr; }
}