/* ============================================
   ABDELFATTAH M. — Personal Portfolio
   Multi-theme, Multilingual, Single Page
   ============================================ */

/* ---------- RESET ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { font-family: var(--ff-body); color: var(--text); background: var(--bg); line-height: 1.6; transition: background .4s, color .4s; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font: inherit; color: inherit; }
input, textarea { font: inherit; color: inherit; background: none; border: none; outline: none; }

/* ---------- FONTS ---------- */
:root {
  --ff-body: 'Inter', sans-serif;
  --ff-arabic: 'Cairo', sans-serif;
  --ff-mono: 'JetBrains Mono', monospace;
}

/* ---------- THEME TOKENS ---------- */

/* DARK (default) */
[data-theme="dark"] {
  --bg: #0a0a0a;
  --bg-surface: #111111;
  --bg-card: #161616;
  --bg-card-hover: #1e1e1e;
  --bg-nav: rgba(10,10,10,.85);
  --text: #e8e8e8;
  --text-muted: #777;
  --text-heading: #fff;
  --accent: #ff5ca8;
  --accent-rgb: 255,92,168;
  --accent-hover: #ff7fbc;
  --accent-subtle: rgba(255,92,168,.08);
  --accent-glow: rgba(255,92,168,.18);
  --border: #222;
  --border-hover: #333;
  --shadow-card: 0 4px 24px rgba(0,0,0,.4);
  --shadow-nav: 0 1px 32px rgba(0,0,0,.5);
  --hero-gradient: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(255,92,168,.07) 0%, transparent 60%);
  --section-alt: #0e0e0e;
  --scrollbar-thumb: #333;
  --modal-overlay: rgba(0,0,0,.8);
  --skeleton: #1a1a1a;
  --tag-bg: rgba(255,92,168,.1);
  --tag-text: #ff8ac8;
  --input-bg: #1a1a1a;
  --input-border: #2a2a2a;
  --input-focus: #ff5ca8;
}

/* LIGHT */
[data-theme="light"] {
  --bg: #fafafa;
  --bg-surface: #fff;
  --bg-card: #fff;
  --bg-card-hover: #f5f5f5;
  --bg-nav: rgba(255,255,255,.9);
  --text: #333;
  --text-muted: #888;
  --text-heading: #111;
  --accent: #d91b78;
  --accent-rgb: 217,27,120;
  --accent-hover: #e63a8c;
  --accent-subtle: rgba(217,27,120,.06);
  --accent-glow: rgba(217,27,120,.1);
  --border: #e0e0e0;
  --border-hover: #ccc;
  --shadow-card: 0 2px 16px rgba(0,0,0,.06);
  --shadow-nav: 0 1px 16px rgba(0,0,0,.08);
  --hero-gradient: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(217,27,120,.05) 0%, transparent 60%);
  --section-alt: #f2f2f2;
  --scrollbar-thumb: #ccc;
  --modal-overlay: rgba(0,0,0,.5);
  --skeleton: #eee;
  --tag-bg: rgba(217,27,120,.08);
  --tag-text: #d91b78;
  --input-bg: #f5f5f5;
  --input-border: #ddd;
  --input-focus: #d91b78;
}

/* PERIDOT */
[data-theme="peridot"] {
  --bg: #0a100a;
  --bg-surface: #0f180f;
  --bg-card: #142014;
  --bg-card-hover: #1a2a1a;
  --bg-nav: rgba(10,16,10,.9);
  --text: #d0e8c8;
  --text-muted: #6a8a5a;
  --text-heading: #e8fce0;
  --accent: #ff6fb0;
  --accent-rgb: 255,111,176;
  --accent-hover: #ff8dc2;
  --accent-subtle: rgba(255,111,176,.08);
  --accent-glow: rgba(255,111,176,.15);
  --border: #1a2a1a;
  --border-hover: #2a3a2a;
  --shadow-card: 0 4px 24px rgba(0,0,0,.5);
  --shadow-nav: 0 1px 32px rgba(0,0,0,.6);
  --hero-gradient: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(255,111,176,.08) 0%, transparent 60%);
  --section-alt: #0d150d;
  --scrollbar-thumb: #2a3a2a;
  --modal-overlay: rgba(0,0,0,.85);
  --skeleton: #1a2a1a;
  --tag-bg: rgba(255,111,176,.1);
  --tag-text: #ff9fce;
  --input-bg: #142014;
  --input-border: #1a2a1a;
  --input-focus: #ff6fb0;
}

/* OCEAN */
[data-theme="ocean"] {
  --bg: #080e18;
  --bg-surface: #0c1422;
  --bg-card: #101a2e;
  --bg-card-hover: #162238;
  --bg-nav: rgba(8,14,24,.9);
  --text: #c8dce8;
  --text-muted: #5878a0;
  --text-heading: #e0f0ff;
  --accent: #ff69b4;
  --accent-rgb: 255,105,180;
  --accent-hover: #ff87c5;
  --accent-subtle: rgba(255,105,180,.08);
  --accent-glow: rgba(255,105,180,.15);
  --border: #152030;
  --border-hover: #1a2a40;
  --shadow-card: 0 4px 24px rgba(0,0,0,.5);
  --shadow-nav: 0 1px 32px rgba(0,0,0,.6);
  --hero-gradient: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(255,105,180,.06) 0%, transparent 60%);
  --section-alt: #0a1020;
  --scrollbar-thumb: #1a2a40;
  --modal-overlay: rgba(0,0,0,.85);
  --skeleton: #101a2e;
  --tag-bg: rgba(255,105,180,.1);
  --tag-text: #ff9bd2;
  --input-bg: #101a2e;
  --input-border: #152030;
  --input-focus: #ff69b4;
}

/* WARM */
[data-theme="warm"] {
  --bg: #12100c;
  --bg-surface: #1a1610;
  --bg-card: #201c14;
  --bg-card-hover: #2a2418;
  --bg-nav: rgba(18,16,12,.9);
  --text: #e8dcc8;
  --text-muted: #8a7a60;
  --text-heading: #f8f0e0;
  --accent: #f56aa5;
  --accent-rgb: 245,106,165;
  --accent-hover: #fb86bc;
  --accent-subtle: rgba(245,106,165,.08);
  --accent-glow: rgba(245,106,165,.15);
  --border: #2a2418;
  --border-hover: #3a3020;
  --shadow-card: 0 4px 24px rgba(0,0,0,.5);
  --shadow-nav: 0 1px 32px rgba(0,0,0,.6);
  --hero-gradient: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(245,106,165,.06) 0%, transparent 60%);
  --section-alt: #161210;
  --scrollbar-thumb: #3a3020;
  --modal-overlay: rgba(0,0,0,.85);
  --skeleton: #201c14;
  --tag-bg: rgba(245,106,165,.1);
  --tag-text: #ffadd4;
  --input-bg: #201c14;
  --input-border: #2a2418;
  --input-focus: #f56aa5;
}

/* ---------- TYPOGRAPHY ---------- */
h1, h2, h3, h4, h5, h6 { color: var(--text-heading); font-weight: 600; line-height: 1.2; }
h1 { font-size: clamp(2.4rem, 5vw, 4rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.4rem); }
p { color: var(--text); }

/* ---------- RTL ---------- */
[dir="rtl"] body { font-family: var(--ff-arabic), var(--ff-body); }
[dir="rtl"] .hero-tag, [dir="rtl"] .section-label { letter-spacing: 0; }

/* ---------- UTILITY ---------- */
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 100px 0; position: relative; }
.section-alt { background: var(--section-alt); }
.section-header { text-align: center; margin-bottom: 60px; }
.section-label { display: inline-flex; align-items: center; gap: 8px; font-family: var(--ff-mono); font-size: .75rem; letter-spacing: 3px; text-transform: uppercase; color: var(--accent); margin-bottom: 12px; }
.section-label::before { content: ''; width: 20px; height: 1px; background: var(--accent); }
.section-title { margin-bottom: 16px; }
.section-desc { color: var(--text-muted); max-width: 560px; margin: 0 auto; font-size: .95rem; }
.accent { color: var(--accent); }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 28px; border-radius: 8px; font-weight: 500; font-size: .9rem; transition: all .3s; }
.btn-primary { background: var(--accent); color: #ffffff; }
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(var(--accent-rgb),.25); }
.btn-outline { border: 1px solid var(--border-hover); color: var(--text); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* ---------- SCROLL ANIMATIONS ---------- */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: .1s; }
.reveal-delay-2 { transition-delay: .2s; }
.reveal-delay-3 { transition-delay: .3s; }
.reveal-delay-4 { transition-delay: .4s; }

/* ---------- SCROLLBAR ---------- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 3px; }

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: var(--bg-nav); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: all .3s;
}
.nav.scrolled { border-bottom-color: var(--border); box-shadow: var(--shadow-nav); }
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  max-width: 1200px; margin: 0 auto; padding: 0 24px; height: 64px;
}
.nav-logo { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 1.1rem; }
.nav-logo img { height: 28px; width: auto; }
.nav-links { display: flex; gap: 4px; }
.nav-links a {
  padding: 6px 14px; border-radius: 6px; font-size: .85rem; font-weight: 500;
  color: var(--text-muted); transition: all .25s; position: relative;
}
.nav-links a:hover, .nav-links a.active { color: var(--text-heading); }
.nav-links a.active::after {
  content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
  width: 16px; height: 2px; background: var(--accent); border-radius: 1px;
}
.nav-actions { display: flex; align-items: center; gap: 8px; }
.nav-action-btn {
  display: flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 8px; font-size: 1.1rem;
  transition: all .25s; color: var(--text-muted); position: relative;
}
.nav-action-btn:hover { background: var(--accent-subtle); color: var(--accent); }

/* Theme Picker Dropdown */
.theme-picker { position: relative; }
.theme-dropdown {
  position: absolute; top: calc(100% + 8px); right: 0; min-width: 160px;
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px;
  padding: 6px; box-shadow: var(--shadow-card);
  opacity: 0; visibility: hidden; transform: translateY(-8px);
  transition: all .25s;
}
.theme-dropdown.open { opacity: 1; visibility: visible; transform: translateY(0); }
.theme-option {
  display: flex; align-items: center; gap: 10px; width: 100%;
  padding: 8px 12px; border-radius: 8px; font-size: .85rem;
  transition: background .2s; text-align: left;
}
[dir="rtl"] .theme-option { text-align: right; }
.theme-option:hover { background: var(--accent-subtle); }
.theme-option.active { color: var(--accent); }
.theme-dot {
  width: 14px; height: 14px; border-radius: 50%; flex-shrink: 0;
  border: 2px solid transparent;
}
.theme-option.active .theme-dot { border-color: var(--accent); }
.dot-dark { background: #0a0a0a; }
.dot-light { background: #f0f0f0; }
.dot-peridot { background: #b4d330; }
.dot-ocean { background: #4cc9f0; }
.dot-warm { background: #e8a838; }

/* Language Picker */
.lang-picker { position: relative; }
.lang-btn { font-size: .8rem; font-weight: 600; width: auto; padding: 0 10px; letter-spacing: 1px; }
.lang-dropdown {
  position: absolute; top: calc(100% + 8px); right: 0; min-width: 140px;
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px;
  padding: 6px; box-shadow: var(--shadow-card);
  opacity: 0; visibility: hidden; transform: translateY(-8px);
  transition: all .25s;
}
[dir="rtl"] .lang-dropdown { right: auto; left: 0; }
.lang-dropdown.open { opacity: 1; visibility: visible; transform: translateY(0); }
.lang-option {
  display: flex; align-items: center; gap: 10px; width: 100%;
  padding: 8px 12px; border-radius: 8px; font-size: .85rem;
  transition: background .2s; text-align: left;
}
[dir="rtl"] .lang-option { text-align: right; }
.lang-option:hover { background: var(--accent-subtle); }
.lang-option.active { color: var(--accent); font-weight: 600; }

/* Mobile Menu */
.nav-toggle { display: none; flex-direction: column; gap: 5px; width: 36px; height: 36px; align-items: center; justify-content: center; border-radius: 8px; }
.nav-toggle span { display: block; width: 18px; height: 2px; background: var(--text); border-radius: 1px; transition: all .3s; }
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(4px,4px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* ============================================
   HERO
   ============================================ */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  position: relative; padding-top: 64px;
  background: var(--hero-gradient);
}
.hero-inner { display: flex; align-items: center; gap: 60px; width: 100%; }
.hero-content { flex: 1; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--ff-mono); font-size: .75rem; letter-spacing: 3px;
  text-transform: uppercase; color: var(--accent); margin-bottom: 20px;
}
.hero-tag .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); animation: pulse 2s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .3; } }
.hero-name { margin-bottom: 16px; }
.hero-title {
  font-size: clamp(1rem, 2vw, 1.3rem); color: var(--text-muted);
  font-weight: 400; margin-bottom: 24px; min-height: 2em;
}
.hero-desc { color: var(--text-muted); max-width: 520px; margin-bottom: 36px; font-size: .95rem; line-height: 1.7; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-avatar {
  width: 320px; height: 320px; border-radius: 24px; overflow: hidden;
  position: relative; flex-shrink: 0;
  background: var(--bg-card); border: 1px solid var(--border);
}
.hero-avatar img { width: 100%; height: 100%; object-fit: cover; }
.hero-avatar::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(var(--accent-rgb),.1) 0%, transparent 60%);
}
.hero-scroll {
  position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  color: var(--text-muted); font-size: .7rem; letter-spacing: 2px; text-transform: uppercase;
  animation: float 3s ease-in-out infinite;
  cursor: pointer;
}
.hero-scroll-line { width: 1px; height: 32px; background: linear-gradient(to bottom, var(--accent), transparent); }
@keyframes float { 0%, 100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(8px); } }

/* ============================================
   ABOUT
   ============================================ */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.about-text { font-size: .95rem; line-height: 1.8; color: var(--text-muted); }
.about-text p + p { margin-top: 16px; }
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 32px; }
.stat-card {
  padding: 24px; border-radius: 12px; text-align: center;
  background: var(--bg-card); border: 1px solid var(--border);
  transition: all .3s;
}
.stat-card:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: var(--shadow-card); }
.stat-number { font-size: 2rem; font-weight: 700; color: var(--accent); display: block; }
.stat-label { font-size: .75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; margin-top: 4px; }
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; }
.service-card {
  padding: 32px 24px; border-radius: 16px;
  background: var(--bg-card); border: 1px solid var(--border);
  transition: all .3s; text-align: center;
}
.service-card:hover { border-color: var(--accent); transform: translateY(-4px); box-shadow: var(--shadow-card); }
.service-icon { font-size: 2rem; margin-bottom: 16px; display: block; }
.service-card h3 { font-size: 1rem; margin-bottom: 8px; }
.service-card p { font-size: .85rem; color: var(--text-muted); }

/* ============================================
   EXPERIENCE TIMELINE
   ============================================ */
.timeline { position: relative; padding-left: 32px; }
.timeline::before {
  content: ''; position: absolute; left: 7px; top: 0; bottom: 0;
  width: 1px; background: var(--border);
}
[dir="rtl"] .timeline { padding-left: 0; padding-right: 32px; }
[dir="rtl"] .timeline::before { left: auto; right: 7px; }
.timeline-item { position: relative; padding-bottom: 40px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot {
  position: absolute; left: -32px; top: 6px;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--accent);
  z-index: 1;
}
[dir="rtl"] .timeline-dot { left: auto; right: -32px; }
.timeline-item.current .timeline-dot { background: var(--accent); box-shadow: 0 0 0 4px var(--accent-glow); }
.timeline-date {
  font-family: var(--ff-mono); font-size: .75rem; color: var(--accent);
  letter-spacing: 1px; margin-bottom: 4px;
}
.timeline-role { font-size: 1.1rem; font-weight: 600; margin-bottom: 2px; }
.timeline-company { font-size: .9rem; color: var(--text-muted); margin-bottom: 8px; }
.timeline-company-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.timeline-company-logo img {
  width: 24px;
  height: 24px;
  object-fit: contain;
}
.timeline-desc { font-size: .85rem; color: var(--text-muted); line-height: 1.7; }
.timeline-desc ul { padding-left: 16px; list-style: disc; }
[dir="rtl"] .timeline-desc ul { padding-left: 0; padding-right: 16px; }
.timeline-desc li { margin-top: 4px; }
.exp-tabs { display: flex; gap: 4px; margin-bottom: 40px; justify-content: center; }
.exp-tab {
  padding: 8px 20px; border-radius: 8px; font-size: .85rem; font-weight: 500;
  color: var(--text-muted); transition: all .25s;
}
.exp-tab.active, .exp-tab:hover { background: var(--accent-subtle); color: var(--accent); }
.exp-panel { display: none; }
.exp-panel.active { display: block; }

/* ============================================
   PORTFOLIO
   ============================================ */
.portfolio-filters { display: flex; gap: 4px; justify-content: center; margin-bottom: 40px; flex-wrap: wrap; }
.filter-btn {
  padding: 8px 20px; border-radius: 8px; font-size: .85rem; font-weight: 500;
  color: var(--text-muted); transition: all .25s;
}
.filter-btn.active, .filter-btn:hover { background: var(--accent-subtle); color: var(--accent); }
.portfolio-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 24px; }
.project-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px;
  overflow: hidden; transition: all .4s; position: relative;
}
.project-card:hover { border-color: var(--accent); transform: translateY(-4px); box-shadow: var(--shadow-card); }
.project-card.featured { grid-column: span 2; }
.project-thumb {
  width: 100%; aspect-ratio: 16/9; overflow: hidden; position: relative;
  background: var(--skeleton);
}
.project-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.project-card:hover .project-thumb img { transform: scale(1.05); }
.project-tag {
  position: absolute; top: 12px; left: 12px;
  padding: 4px 12px; border-radius: 6px; font-size: .7rem; font-weight: 600;
  background: rgba(0,0,0,.7); color: #fff; backdrop-filter: blur(8px);
  text-transform: uppercase; letter-spacing: 1px;
}
[dir="rtl"] .project-tag { left: auto; right: 12px; }
.project-info { padding: 20px; }
.project-info h3 { font-size: 1.05rem; margin-bottom: 6px; }
.project-info p { font-size: .85rem; color: var(--text-muted); margin-bottom: 12px; line-height: 1.6; }
.project-meta { display: flex; gap: 12px; flex-wrap: wrap; }
.project-meta-tag {
  padding: 4px 10px; border-radius: 6px; font-size: .7rem;
  background: var(--tag-bg); color: var(--tag-text);
}
.project-links { display: flex; gap: 8px; margin-top: 12px; }
.project-link {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 14px; border-radius: 6px; font-size: .8rem;
  border: 1px solid var(--border); color: var(--text-muted);
  transition: all .25s;
}
.project-link:hover { border-color: var(--accent); color: var(--accent); }
.project-card[hidden] { display: none; }

/* ============================================
   RESEARCH
   ============================================ */
.research-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px;
  padding: 40px; max-width: 800px; margin: 0 auto; position: relative;
  overflow: hidden;
}
.research-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent);
}
.research-badge {
  display: inline-flex; align-items: center; gap: 6px; padding: 4px 12px;
  border-radius: 6px; font-size: .7rem; font-weight: 600;
  background: var(--tag-bg); color: var(--tag-text);
  text-transform: uppercase; letter-spacing: 1px; margin-bottom: 16px;
}
.research-card h3 { font-size: 1.2rem; margin-bottom: 12px; line-height: 1.4; }
.research-meta { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 16px; font-size: .85rem; color: var(--text-muted); }
.research-meta span { display: flex; align-items: center; gap: 6px; }
.research-abstract { font-size: .9rem; color: var(--text-muted); line-height: 1.7; margin-bottom: 20px; }

/* ============================================
   BLOG
   ============================================ */
.blog-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 24px; }
.blog-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px;
  padding: 28px; transition: all .3s; cursor: pointer;
}
.blog-card:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: var(--shadow-card); }
.blog-date { font-family: var(--ff-mono); font-size: .75rem; color: var(--accent); margin-bottom: 12px; }
.blog-card h3 { font-size: 1.05rem; margin-bottom: 8px; transition: color .25s; }
.blog-card:hover h3 { color: var(--accent); }
.blog-excerpt { font-size: .85rem; color: var(--text-muted); line-height: 1.7; margin-bottom: 16px; }
.blog-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.blog-tag { padding: 3px 10px; border-radius: 5px; font-size: .7rem; background: var(--tag-bg); color: var(--tag-text); }
.blog-read-more { display: inline-flex; align-items: center; gap: 6px; font-size: .85rem; color: var(--accent); font-weight: 500; margin-top: 12px; }

/* Blog Expanded (Modal) */
.blog-modal-overlay {
  position: fixed; inset: 0; background: var(--modal-overlay);
  z-index: 2000; opacity: 0; visibility: hidden; transition: all .3s;
  display: flex; align-items: flex-start; justify-content: center;
  padding: 40px 24px; overflow-y: auto;
}
.blog-modal-overlay.open { opacity: 1; visibility: visible; }
.blog-modal {
  background: var(--bg-surface); border: 1px solid var(--border); border-radius: 20px;
  max-width: 720px; width: 100%; padding: 48px; position: relative;
  transform: translateY(20px); transition: transform .3s;
}
.blog-modal-overlay.open .blog-modal { transform: translateY(0); }
.blog-modal-close {
  position: absolute; top: 16px; right: 16px; width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center; border-radius: 8px;
  font-size: 1.2rem; color: var(--text-muted); transition: all .25s;
}
[dir="rtl"] .blog-modal-close { right: auto; left: 16px; }
.blog-modal-close:hover { background: var(--accent-subtle); color: var(--accent); }
.blog-modal h2 { font-size: 1.5rem; margin-bottom: 8px; }
.blog-modal .blog-date { margin-bottom: 24px; }
.blog-modal-body { font-size: .95rem; line-height: 1.8; color: var(--text); }
.blog-modal-body p { margin-bottom: 16px; }
.blog-modal-body h3 { margin: 24px 0 12px; }
.blog-modal-body ul, .blog-modal-body ol { padding-left: 20px; margin-bottom: 16px; }
[dir="rtl"] .blog-modal-body ul, [dir="rtl"] .blog-modal-body ol { padding-left: 0; padding-right: 20px; }
.blog-modal-body li { margin-bottom: 8px; list-style: disc; }
.blog-modal-body code { font-family: var(--ff-mono); background: var(--accent-subtle); padding: 2px 6px; border-radius: 4px; font-size: .85rem; }

/* ============================================
   CONTACT
   ============================================ */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.contact-info-list { display: flex; flex-direction: column; gap: 24px; }
.contact-item-card {
  display: flex; align-items: center; gap: 16px;
  padding: 20px; border-radius: 12px;
  background: var(--bg-card); border: 1px solid var(--border);
  transition: all .3s;
}
.contact-item-card:hover { border-color: var(--accent); }
.contact-icon {
  width: 44px; height: 44px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  background: var(--accent-subtle); color: var(--accent); font-size: 1.2rem; flex-shrink: 0;
}
.contact-item-label { font-size: .75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }
.contact-item-value { font-size: .9rem; margin-top: 2px; }
.social-links { display: flex; gap: 8px; margin-top: 8px; }
.social-link {
  width: 40px; height: 40px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-card); border: 1px solid var(--border);
  color: var(--text-muted); font-size: 1.1rem; transition: all .25s;
}
.social-link:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.contact-form { display: flex; flex-direction: column; gap: 16px; }
.form-group { position: relative; }
.form-input, .form-textarea {
  width: 100%; padding: 14px 18px; border-radius: 12px;
  background: var(--input-bg); border: 1px solid var(--input-border);
  color: var(--text); font-size: .9rem; transition: border-color .25s;
}
.form-input:focus, .form-textarea:focus { border-color: var(--input-focus); }
.form-input::placeholder, .form-textarea::placeholder { color: var(--text-muted); }
.form-textarea { resize: vertical; min-height: 140px; }
.form-submit { align-self: flex-start; }
[dir="rtl"] .form-submit { align-self: flex-end; }

/* ============================================
   TIME CAPSULE
   ============================================ */
.capsule-timeline { position: relative; max-width: 700px; margin: 0 auto; }
.capsule-item {
  display: flex; gap: 24px; padding: 24px; border-radius: 16px;
  background: var(--bg-card); border: 1px solid var(--border);
  margin-bottom: 16px; transition: all .3s; align-items: center;
}
.capsule-item:hover { border-color: var(--accent); }
.capsule-version {
  font-family: var(--ff-mono); font-size: 1.4rem; font-weight: 700;
  color: var(--accent); flex-shrink: 0; width: 48px; text-align: center;
}
.capsule-content { flex: 1; }
.capsule-year { font-family: var(--ff-mono); font-size: .75rem; color: var(--accent); letter-spacing: 1px; margin-bottom: 4px; }
.capsule-title { font-size: 1rem; font-weight: 600; margin-bottom: 4px; }
.capsule-desc { font-size: .85rem; color: var(--text-muted); line-height: 1.6; }
.capsule-link {
  display: inline-flex; align-items: center; gap: 6px; margin-top: 8px;
  font-size: .8rem; color: var(--accent); font-weight: 500;
}
.capsule-current { border-color: var(--accent); background: var(--accent-subtle); }

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: 40px 0; border-top: 1px solid var(--border);
  text-align: center; font-size: .8rem; color: var(--text-muted);
}
.footer a { color: var(--accent); }
.footer-links { display: flex; justify-content: center; gap: 20px; margin-bottom: 16px; }
.footer-links a { transition: color .25s; }
.footer-links a:hover { color: var(--accent); }

/* Back to Top */
.back-to-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: #fff;
  box-shadow: var(--shadow-card);
  z-index: 1500;
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: all .25s ease;
}
.back-to-top.show {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.back-to-top:hover {
  background: var(--accent-hover);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .hero-inner { flex-direction: column-reverse; text-align: center; gap: 40px; }
  .hero-desc { margin: 0 auto 36px; }
  .hero-actions { justify-content: center; }
  .hero-avatar { width: 240px; height: 240px; }
  .about-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .project-card.featured { grid-column: span 1; }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed; top: 64px; left: 0; right: 0;
    background: var(--bg-nav); backdrop-filter: blur(20px);
    flex-direction: column; padding: 16px 24px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-100%); opacity: 0;
    transition: all .3s; pointer-events: none;
  }
  .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: all; }
  .nav-toggle { display: flex; }
  .section { padding: 60px 0; }
  .section-header { margin-bottom: 40px; }
  .hero-avatar { width: 180px; height: 180px; }
  .stats-grid { grid-template-columns: repeat(3, 1fr); gap: 12px; }
  .stat-card { padding: 16px 8px; }
  .stat-number { font-size: 1.4rem; }
  .portfolio-grid, .blog-grid { grid-template-columns: 1fr; }
  .blog-modal { padding: 28px; }
  .capsule-item { flex-direction: column; text-align: center; gap: 12px; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { justify-content: center; }
  .stats-grid { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: 1fr; }
  .portfolio-filters { gap: 2px; }
  .filter-btn { padding: 6px 12px; font-size: .8rem; }
  .exp-tabs { flex-wrap: wrap; }
}

/* ---------- PRINT ---------- */
@media print {
  .nav, .hero-scroll, .theme-picker, .lang-picker, .nav-toggle,
  .blog-modal-overlay, #timecapsule, .contact-form { display: none !important; }
  body { background: #fff; color: #000; }
  .section { padding: 20px 0; }
}