/* ============================================================
   ESMATULLAH AKBARI — EA
   Modern, Refined, Fully Responsive CSS
   Design: Editorial luxury meets academic clarity
   ============================================================ */

/* ── Google Fonts ─────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=Sora:wght@300;400;500;600;700&family=Noto+Nastaliq+Urdu&display=swap');

/* ── CSS Variables ────────────────────────────────────────── */
:root {
  /* Core Palette */
  --clr-primary:      #265a99;
  --clr-accent:       #e94560;
  --clr-accent-2:     #f5a623;
  --clr-surface:      #ffffffdb;
  --clr-surface-2:    #f4f6fb;
  --clr-surface-3:    #eaecf4;
  --clr-border:       rgba(15, 52, 96, 0.12);
  --clr-text:         #0d1117;
  --clr-text-muted:   #5a6378;
  --clr-text-light:   #8892a4;
  --clr-white:        #ffffff;
  --clr-shadow:       rgba(15, 52, 96, 0.10);

  /* Typography */
  --font-display:     'DM Serif Display', Georgia, serif;
  --font-body:        'Sora', system-ui, sans-serif;
  --font-fa:          'Noto Nastaliq Urdu', serif;

  /* Spacing */
  --space-xs:   0.4rem;
  --space-sm:   0.8rem;
  --space-md:   1.25rem;
  --space-lg:   2rem;
  --space-xl:   3rem;
  --space-2xl:  5rem;

  /* Radii */
  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --radius-xl:  32px;
  --radius-pill:99px;

  /* Shadows */
  --shadow-sm:  0 2px 8px var(--clr-shadow);
  --shadow-md:  0 8px 24px var(--clr-shadow);
  --shadow-lg:  0 20px 48px var(--clr-shadow);

  /* Transitions */
  --ease:       cubic-bezier(0.4, 0, 0.2, 1);
  --dur-fast:   0.18s;
  --dur-mid:    0.32s;
  --dur-slow:   0.6s;

  /* Layout */
  --max-w:      1200px;
  --header-h:   72px;
}

/* ── Dark Mode ────────────────────────────────────────────── */
:root.dark-mode {
  --clr-primary:      #4ea8de;
  --clr-accent:       #e94560;
  --clr-accent-2:     #f5a623;
  --clr-surface:      #0d1117;
  --clr-surface-2:    #161b22;
  --clr-surface-3:    #1e2530;
  --clr-border:       rgba(255,255,255,0.08);
  --clr-text:         #e6edf3;
  --clr-text-muted:   #8d96a7;
  --clr-text-light:   #6e7681;
  --clr-shadow:       rgba(0,0,0,0.35);
}

/* ── Reset ────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  background: var(--clr-surface-2);
  color: var(--clr-text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a  { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* Persian */
html[lang="fa"] body { font-family: var(--font-fa), var(--font-body); direction: rtl; text-align: right; }

/* ── Utility ──────────────────────────────────────────────── */
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

/* ── Scroll Reveal ────────────────────────────────────────── */
.section-reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--dur-slow) var(--ease), transform var(--dur-slow) var(--ease);
}
.section-reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: transform var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
  white-space: nowrap;
}
.btn:hover  { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--clr-accent);
  color: var(--clr-white);
  box-shadow: 0 4px 16px rgba(233, 69, 96, 0.3);
}
.btn-primary:hover {
  background: #c73652;
  box-shadow: 0 6px 20px rgba(233, 69, 96, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--clr-primary);
  border: 2px solid var(--clr-primary);
}
.btn-outline:hover {
  background: var(--clr-primary);
  color: var(--clr-white);
}
:root.dark-mode .btn-outline {
  color: var(--clr-primary);
  border-color: var(--clr-primary);
}
:root.dark-mode .btn-outline:hover {
  background: var(--clr-primary);
  color: var(--clr-surface);
}

.btn-full { width: 100%; justify-content: center; }

/* ── Header ───────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 900;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--clr-border);
  height: var(--header-h);
  transition: background var(--dur-mid) var(--ease);
}
:root.dark-mode .site-header {
  background: rgba(13,17,23,0.88);
}
.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
}

/* Logo */
.logo {
  font-family: var(--font-display);
  font-size: 1.35rem;
  color: var(--clr-primary);
  letter-spacing: -0.01em;
  flex-shrink: 0;
  transition: color var(--dur-fast) var(--ease);
}
.logo:hover { color: var(--clr-accent); }

/* Nav */
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex: 1;
  justify-content: flex-end;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}
.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-pill);
  transition: color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
  position: relative;
}
.nav-link:hover { color: var(--clr-primary); background: var(--clr-surface-3); }
.nav-link.active {
  color: var(--clr-white);
  background: var(--clr-primary);
}
:root.dark-mode .nav-link:hover { background: var(--clr-surface-3); color: var(--clr-primary); }

/* Header controls */
.header-controls {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
#language-select {
  padding: 0.4rem 0.7rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--clr-border);
  background: var(--clr-surface);
  color: var(--clr-text);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: border-color var(--dur-fast) var(--ease);
}
#language-select:focus { outline: 2px solid var(--clr-accent); outline-offset: 2px; }
:root.dark-mode #language-select { background: var(--clr-surface-2); }

.dark-mode-toggle {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--clr-surface-3);
  color: var(--clr-text-muted);
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.dark-mode-toggle:hover { background: var(--clr-primary); color: var(--clr-white); }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 6px;
  border-radius: var(--radius-sm);
  background: var(--clr-surface-3);
}
.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: transform var(--dur-mid) var(--ease), opacity var(--dur-mid) var(--ease);
}
.hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ── Main Layout ──────────────────────────────────────────── */
main {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

/* ── Section Shared ───────────────────────────────────────── */
section {
  background: var(--clr-surface);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--clr-border);
}
:root.dark-mode section { background: var(--clr-surface-2); }

.section-label {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: var(--space-sm);
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.8rem);
  color: var(--clr-primary);
  line-height: 1.15;
  margin-bottom: var(--space-lg);
}
:root.dark-mode .section-title { color: var(--clr-primary); }

.page-hero {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--clr-border);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-sm);
}
.page-hero .section-title { margin-bottom: var(--space-md); }
.page-hero-sub {
  font-size: 1.05rem;
  color: var(--clr-text-muted);
  max-width: 55ch;
}

/* ── HERO SECTION ─────────────────────────────────────────── */
#hero {
  background: linear-gradient(135deg, var(--clr-primary) 0%, #1a4a80 50%, #0d2f5a 100%);
  border: none;
  color: var(--clr-white);
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: var(--space-xl);
  align-items: center;
  padding: var(--space-2xl) var(--space-xl);
  overflow: hidden;
  position: relative;
}
#hero::before {
  content: '';
  position: absolute;
  top: -80px; right: -80px;
  width: 420px; height: 420px;
  border-radius: 50%;
  background: rgba(233,69,96,0.12);
  pointer-events: none;
}
#hero::after {
  content: '';
  position: absolute;
  bottom: -60px; left: -60px;
  width: 300px; height: 300px;
  border-radius: 50%;
  background: rgba(245,166,35,0.08);
  pointer-events: none;
}

.hero-content { z-index: 1; }

.hero-eyebrow {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--clr-accent-2);
  margin-bottom: var(--space-sm);
}
.hero-name {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  line-height: 1.08;
  margin-bottom: var(--space-md);
  color: var(--clr-white);
}
.hero-sub {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.75);
  max-width: 52ch;
  margin-bottom: var(--space-lg);
  line-height: 1.8;
}
.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}
#hero .btn-outline {
  color: var(--clr-white);
  border-color: rgba(255,255,255,0.45);
}
#hero .btn-outline:hover {
  background: rgba(255,255,255,0.15);
  border-color: var(--clr-white);
}
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}
.hero-tags span {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.3rem 0.85rem;
  border-radius: var(--radius-pill);
  background: rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.85);
  border: 1px solid rgba(255,255,255,0.18);
}

/* Hero visual */
.hero-visual { z-index: 1; display: flex; justify-content: center; }
.hero-card {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-xl);
  padding: var(--space-xl) var(--space-lg);
  backdrop-filter: blur(12px);
  text-align: center;
  width: 100%;
  max-width: 300px;
}
.hero-avatar-wrap {
  position: relative;
  width: 96px; height: 96px;
  margin: 0 auto var(--space-lg);
}
.hero-avatar-ring {
  position: absolute; inset: -6px;
  border-radius: 50%;
  background: conic-gradient(var(--clr-accent), var(--clr-accent-2), var(--clr-accent));
  animation: spin 8s linear infinite;
}
.hero-avatar-initials {
  position: relative;
  z-index: 1;
  width: 96px; height: 96px;
  border-radius: 50%;
  background: var(--clr-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--clr-white);
  border: 3px solid var(--clr-surface);
}
.hero-stats { display: grid; grid-template-columns: repeat(3,1fr); gap: var(--space-sm); }
.stat { text-align: center; }
.stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--clr-white);
  line-height: 1;
  margin-bottom: 2px;
}
.stat-label {
  display: block;
  font-size: 0.72rem;
  color: rgba(255,255,255,0.6);
  font-weight: 500;
}

/* ── ABOUT SECTION ────────────────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--space-xl);
  align-items: start;
}
.about-text p {
  font-size: 1.02rem;
  color: var(--clr-text-muted);
  margin-bottom: var(--space-md);
  line-height: 1.85;
}
.about-highlights {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}
.highlight-card {
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md) var(--space-lg);
  transition: transform var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}
:root.dark-mode .highlight-card { background: var(--clr-surface-3); }
.highlight-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.highlight-card i {
  font-size: 1.3rem;
  color: var(--clr-accent);
  margin-bottom: var(--space-sm);
}
.highlight-card h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--clr-primary);
  margin-bottom: var(--space-xs);
}
.highlight-card p {
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
}

/* ── PROJECTS SECTION ─────────────────────────────────────── */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
}
.project-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--clr-border);
  position: relative;
  transition: transform var(--dur-mid) var(--ease), box-shadow var(--dur-mid) var(--ease);
  min-height: 280px;
  display: flex;
  flex-direction: column;
}
.project-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.project-card-inner {
  position: relative;
  z-index: 2;
  padding: var(--space-xl) var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  flex: 1;
}
.project-card-bg {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, var(--clr-primary) 0%, #1a4a80 100%);
  z-index: 1;
}
.project-card-bg.alt {
  background: linear-gradient(135deg, #2d1b4e 0%, #4a1d6e 100%);
}
.project-card .project-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-pill);
  background: rgba(255,255,255,0.15);
  color: rgba(255,255,255,0.85);
  border: 1px solid rgba(255,255,255,0.2);
  width: fit-content;
}
.project-card .project-badge.coming {
  background: rgba(245,166,35,0.2);
  color: var(--clr-accent-2);
  border-color: rgba(245,166,35,0.3);
}
.project-card h3 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--clr-white);
}
.project-card p {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.72);
  line-height: 1.7;
  flex: 1;
}
.project-card .btn-outline {
  color: rgba(255,255,255,0.85);
  border-color: rgba(255,255,255,0.35);
  width: fit-content;
}
.project-card .btn-outline:hover {
  background: rgba(255,255,255,0.15);
  border-color: var(--clr-white);
  color: var(--clr-white);
}

/* ── HOBBIES ──────────────────────────────────────────────── */
.hobby-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}
.hobby-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md) var(--space-lg);
  font-weight: 600;
  font-size: 1rem;
  color: var(--clr-text);
  transition: transform var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}
:root.dark-mode .hobby-item { background: var(--clr-surface-3); }
.hobby-item:hover { transform: translateY(-3px); background: var(--clr-primary); color: var(--clr-white); }
.hobby-item i { font-size: 1.2rem; color: var(--clr-accent); transition: color var(--dur-fast) var(--ease); }
.hobby-item:hover i { color: var(--clr-white); }

/* ── RESUME BLOCKS ────────────────────────────────────────── */
.resume-block {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--clr-border);
}
.resume-block:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.resume-block-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}
.resume-block-header i {
  font-size: 1.1rem;
  color: var(--clr-accent);
  width: 36px; height: 36px;
  background: rgba(233,69,96,0.1);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
}
.resume-block-header h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--clr-primary);
}
.resume-block-body.prose p {
  color: var(--clr-text-muted);
  font-size: 0.98rem;
  line-height: 1.85;
  margin-bottom: var(--space-md);
}

/* Timeline */
.timeline { display: flex; flex-direction: column; gap: var(--space-xl); }
.timeline-item {
  display: grid;
  grid-template-columns: 16px 1fr;
  gap: var(--space-lg);
  align-items: start;
  position: relative;
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: 7px; top: 20px;
  width: 2px;
  height: calc(100% + var(--space-xl));
  background: var(--clr-border);
}
.timeline-item:last-child::before { display: none; }
.timeline-dot {
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--clr-surface-3);
  border: 3px solid var(--clr-border);
  margin-top: 4px;
  flex-shrink: 0;
  transition: background var(--dur-fast) var(--ease);
}
.timeline-dot.accent {
  background: var(--clr-accent);
  border-color: var(--clr-accent);
}
.timeline-item:hover .timeline-dot { background: var(--clr-accent); border-color: var(--clr-accent); }
.timeline-meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-xs);
  flex-wrap: wrap;
}
.timeline-date {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--clr-accent);
  letter-spacing: 0.02em;
}
.timeline-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.15rem 0.65rem;
  background: rgba(233,69,96,0.1);
  color: var(--clr-accent);
  border-radius: var(--radius-pill);
}
.timeline-content h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: var(--space-xs);
  line-height: 1.4;
}
.timeline-place {
  font-size: 0.88rem;
  color: var(--clr-text-muted);
  margin-bottom: var(--space-sm);
}
.exp-list {
  list-style: disc;
  padding-left: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
html[lang="fa"] .exp-list { padding-left: 0; padding-right: 1.25rem; }
.exp-list li {
  font-size: 0.9rem;
  color: var(--clr-text-muted);
  line-height: 1.65;
}

/* Resume link cards */
.resume-links-row {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  margin-top: var(--space-lg);
}
.resume-link-card {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  font-weight: 600;
  color: var(--clr-primary);
  font-size: 0.95rem;
  transition: background var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
  flex: 1;
  justify-content: center;
}
:root.dark-mode .resume-link-card { background: var(--clr-surface-3); }
.resume-link-card:hover { background: var(--clr-primary); color: var(--clr-white); transform: translateY(-2px); }
.resume-link-card .small { font-size: 0.75rem; }

/* ── SKILLS PAGE ──────────────────────────────────────────── */
.skill-category {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg) var(--space-xl);
  margin-bottom: var(--space-lg);
  transition: box-shadow var(--dur-fast) var(--ease);
}
:root.dark-mode .skill-category { background: var(--clr-surface-2); }
.skill-category:hover { box-shadow: var(--shadow-md); }
.skill-cat-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--clr-border);
}
.skill-cat-header i {
  font-size: 1.1rem;
  color: var(--clr-accent);
  width: 40px; height: 40px;
  background: rgba(233,69,96,0.1);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
}
.skill-cat-header h3 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  color: var(--clr-primary);
}

/* Skill bars */
.skill-bars { display: flex; flex-direction: column; gap: var(--space-md); }
.skill-bar-label {
  display: flex;
  justify-content: space-between;
  margin-bottom: 6px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--clr-text);
}
.skill-bar-level {
  font-size: 0.8rem;
  color: var(--clr-text-muted);
  font-weight: 500;
}
.skill-bar-track {
  height: 8px;
  background: var(--clr-surface-3);
  border-radius: var(--radius-pill);
  overflow: hidden;
}
.skill-bar-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr-accent));
  border-radius: var(--radius-pill);
  transition: width 1s var(--ease);
}

/* Skill tags */
.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}
.skill-tags span {
  font-size: 0.87rem;
  font-weight: 500;
  padding: 0.45rem 1rem;
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-pill);
  color: var(--clr-text-muted);
  transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}
:root.dark-mode .skill-tags span { background: var(--clr-surface-3); }
.skill-tags span:hover {
  background: var(--clr-primary);
  color: var(--clr-white);
  border-color: var(--clr-primary);
}

/* ── CERTIFICATES PAGE ────────────────────────────────────── */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-md);
}
.cert-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md) var(--space-lg);
  transition: transform var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}
:root.dark-mode .cert-card { background: var(--clr-surface-3); }
.cert-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--clr-accent); }
.cert-card.featured-cert {
  border-color: var(--clr-accent-2);
  background: rgba(245,166,35,0.04);
}
.cert-icon {
  flex-shrink: 0;
  width: 40px; height: 40px;
  background: rgba(233,69,96,0.1);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--clr-accent);
  font-size: 1rem;
  margin-top: 2px;
}
.featured-cert .cert-icon {
  background: rgba(245,166,35,0.15);
  color: var(--clr-accent-2);
}
.cert-issuer {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--clr-text-light);
  margin-bottom: 4px;
}
.cert-body h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--clr-text);
  line-height: 1.5;
}

/* ── CONTACT PAGE ─────────────────────────────────────────── */
.contact-layout {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: var(--space-xl);
  align-items: start;
}
.contact-info-panel {
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  text-align: center;
  position: sticky;
  top: calc(var(--header-h) + var(--space-lg));
}
:root.dark-mode .contact-info-panel { background: var(--clr-surface-3); }

.contact-avatar {
  width: 110px; height: 110px;
  border-radius: 50%;
  overflow: hidden;
  margin: 0 auto var(--space-md);
  border: 3px solid var(--clr-accent);
  box-shadow: 0 0 0 6px rgba(233,69,96,0.12);
}
.contact-avatar img { width: 100%; height: 100%; object-fit: cover; }
.contact-avatar-fallback {
  width: 110px; height: 110px;
  border-radius: 50%;
  background: var(--clr-primary);
  color: var(--clr-white);
  font-family: var(--font-display);
  font-size: 2.2rem;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto var(--space-md);
  border: 3px solid var(--clr-accent);
}

.contact-name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--clr-primary);
  margin-bottom: var(--space-xs);
}
.contact-role {
  font-size: 0.82rem;
  color: var(--clr-text-muted);
  margin-bottom: var(--space-lg);
  line-height: 1.6;
}
.contact-details { text-align: left; margin-bottom: var(--space-lg); }
.contact-detail-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--clr-border);
}
.contact-detail-item:last-child { border-bottom: none; }
.contact-detail-icon {
  width: 34px; height: 34px;
  background: rgba(233,69,96,0.1);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--clr-accent);
  font-size: 0.85rem;
  flex-shrink: 0;
  margin-top: 2px;
}
.contact-detail-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--clr-text-light);
  margin-bottom: 2px;
}
.contact-detail-value {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--clr-text);
  transition: color var(--dur-fast) var(--ease);
}
a.contact-detail-value:hover { color: var(--clr-accent); }

.whatsapp-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--clr-text-light);
  margin-bottom: var(--space-sm);
  text-align: left;
}
.whatsapp-links { display: flex; flex-direction: column; gap: var(--space-xs); margin-bottom: var(--space-lg); }
.whatsapp-btn {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.55rem 1rem;
  background: rgba(37,211,102,0.1);
  color: #128C7E;
  border: 1px solid rgba(37,211,102,0.25);
  border-radius: var(--radius-pill);
  font-size: 0.87rem;
  font-weight: 600;
  transition: background var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}
.whatsapp-btn:hover { background: rgba(37,211,102,0.2); transform: translateX(3px); }
.whatsapp-btn i { font-size: 1rem; color: #25D366; }
:root.dark-mode .whatsapp-btn { color: #25D366; }

.contact-social {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
}
.contact-social a {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--clr-surface-3);
  color: var(--clr-text-muted);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.95rem;
  transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}
:root.dark-mode .contact-social a { background: var(--clr-surface-2); }
.contact-social a:hover { background: var(--clr-primary); color: var(--clr-white); transform: translateY(-3px); }

/* Form panel */
.contact-form-panel {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
}
:root.dark-mode .contact-form-panel { background: var(--clr-surface-2); }
.contact-form-panel h3 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--clr-primary);
  margin-bottom: var(--space-lg);
}
.form-group { display: flex; flex-direction: column; gap: var(--space-xs); margin-bottom: var(--space-md); }
.form-group label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--clr-text);
  letter-spacing: 0.02em;
}
.form-group input,
.form-group textarea {
  padding: 0.8rem 1rem;
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-md);
  background: var(--clr-surface-2);
  color: var(--clr-text);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}
:root.dark-mode .form-group input,
:root.dark-mode .form-group textarea { background: var(--clr-surface-3); }
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--clr-text-light); }
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 3px rgba(233,69,96,0.12);
}
.form-group textarea { resize: vertical; min-height: 140px; }

/* ── FOOTER ───────────────────────────────────────────────── */
.site-footer {
  background: var(--clr-primary);
  color: rgba(255,255,255,0.7);
  margin-top: var(--space-xl);
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg);
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}
.footer-brand .logo { color: var(--clr-white); font-size: 1.2rem; display: block; margin-bottom: var(--space-xs); }
.footer-tagline { font-size: 0.82rem; color: rgba(255,255,255,0.5); }
.footer-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}
.footer-nav a {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.6);
  transition: color var(--dur-fast) var(--ease);
}
.footer-nav a:hover { color: var(--clr-white); }
.footer-social {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
  justify-content: flex-end;
}
.footer-social a {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.7);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem;
  transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}
.footer-social a:hover { background: var(--clr-accent); color: var(--clr-white); transform: translateY(-3px); }
.footer-copy {
  grid-column: 1 / -1;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255,255,255,0.1);
}

/* ── BACK TO TOP ──────────────────────────────────────────── */
.back-to-top {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--clr-accent);
  color: var(--clr-white);
  font-size: 1rem;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity var(--dur-mid) var(--ease), visibility var(--dur-mid) var(--ease), transform var(--dur-mid) var(--ease);
  z-index: 800;
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--clr-primary); transform: translateY(-3px); }

/* ── NOTIFICATION ─────────────────────────────────────────── */
.notification {
  position: fixed;
  top: calc(var(--header-h) + var(--space-md));
  right: var(--space-lg);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  z-index: 1000;
  box-shadow: var(--shadow-md);
  transition: opacity var(--dur-mid) var(--ease);
  animation: slideIn var(--dur-mid) var(--ease);
}
.notification.success { background: #16a34a; color: white; }
.notification.error   { background: #dc2626; color: white; }
.notification.fade-out { opacity: 0; }

/* ── ANIMATIONS ───────────────────────────────────────────── */
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes slideIn { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }

/* ── FOCUS / A11Y ─────────────────────────────────────────── */
:focus-visible { outline: 2px solid var(--clr-accent); outline-offset: 3px; border-radius: 4px; }

/* ── PRINT ────────────────────────────────────────────────── */
@media print {
  body { background: #fff; color: #000; }
  .site-header, .site-footer, .back-to-top, .notification { display: none; }
  section { box-shadow: none; border: none; border-radius: 0; padding: 1rem; }
  .hero-visual { display: none; }
}

/* ── REDUCED MOTION ───────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
  .section-reveal { opacity: 1; transform: none; }
}

/* ── RESPONSIVE ───────────────────────────────────────────── */

/* Tablet */
@media (max-width: 1024px) {
  #hero { grid-template-columns: 1fr; text-align: center; }
  #hero .hero-sub { max-width: 100%; }
  #hero .hero-ctas { justify-content: center; }
  #hero .hero-tags { justify-content: center; }
  .hero-visual { display: none; }
  .about-grid { grid-template-columns: 1fr; }
  .about-highlights { flex-direction: row; flex-wrap: wrap; }
  .highlight-card { flex: 1; min-width: 200px; }
  .contact-layout { grid-template-columns: 1fr; }
  .contact-info-panel { position: static; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-social { justify-content: flex-start; }
}

/* Mobile */
@media (max-width: 768px) {
  :root { --space-xl: 2rem; --space-2xl: 3rem; }

  .header-inner { padding: 0 var(--space-md); }

  .hamburger { display: flex; }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0; right: 0;
    background: var(--clr-surface);
    border-bottom: 1px solid var(--clr-border);
    flex-direction: column;
    padding: var(--space-md);
    gap: var(--space-xs);
    box-shadow: var(--shadow-md);
    z-index: 899;
  }
  :root.dark-mode .nav-links { background: var(--clr-surface-2); }
  .nav-links.open { display: flex; }
  .nav-link { padding: 0.7rem 1rem; border-radius: var(--radius-md); font-size: 1rem; }

  main { padding: var(--space-lg) var(--space-md); gap: var(--space-lg); }
  section { padding: var(--space-lg); border-radius: var(--radius-lg); }

  #hero { padding: var(--space-xl) var(--space-lg); border-radius: var(--radius-lg); }

  .section-title { font-size: clamp(1.6rem, 5vw, 2.2rem); }

  .cert-grid { grid-template-columns: 1fr; }
  .project-grid { grid-template-columns: 1fr; }

  .about-highlights { flex-direction: column; }

  .resume-links-row { flex-direction: column; }

  .footer-inner { grid-template-columns: 1fr; gap: var(--space-lg); }
  .footer-social { justify-content: flex-start; }

  .timeline-item { grid-template-columns: 12px 1fr; }

  .skill-category { padding: var(--space-md); }
}

@media (max-width: 480px) {
  .header-controls { gap: var(--space-xs); }
  #language-select { font-size: 0.8rem; padding: 0.3rem 0.5rem; }
  .logo { font-size: 1.15rem; }
  .hero-name { font-size: 2.2rem; }
  .hero-ctas { flex-direction: column; }
  .btn { padding: 0.7rem 1.4rem; font-size: 0.9rem; }
  .back-to-top { bottom: var(--space-md); right: var(--space-md); }
}

/* ── RTL (Persian) ────────────────────────────────────────── */
html[lang="fa"] .timeline-item { grid-template-columns: 1fr 16px; }
html[lang="fa"] .timeline-item::before { left: unset; right: 7px; }
html[lang="fa"] .timeline-dot { order: 2; }
html[lang="fa"] .timeline-content { order: 1; }
html[lang="fa"] .footer-nav { align-items: flex-end; }
html[lang="fa"] .whatsapp-btn:hover { transform: translateX(-3px); }
html[lang="fa"] .notification { right: unset; left: var(--space-lg); }
html[lang="fa"] .back-to-top { right: unset; left: var(--space-lg); }
html[lang="fa"] .contact-detail-item { flex-direction: row-reverse; text-align: right; }
html[lang="fa"] .contact-details { text-align: right; }
html[lang="fa"] .whatsapp-label { text-align: right; }