/* ==========================================
   CSS Variables — Light & Dark Theme Tokens
   ========================================== */

:root {
  --accent: #1F4E79;
  --accent-light: #2563a8;
  --accent-hover: #2563a8;
  --bg: #FFFFFF;
  --surface: #F8F9FA;
  --surface-elevated: #F0F2F5;
  --text-primary: #1A1A1A;
  --text-secondary: #555555;
  --text-muted: #888888;
  --border: #E5E7EB;
  --border-subtle: #F0F2F5;
  --nav-bg: rgba(255, 255, 255, 0.85);
  --overlay-bg: rgba(255, 255, 255, 0.96);
  --card-hover-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  --transition: 300ms ease;
  --font-sans: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --font-arabic: 'Cairo', sans-serif;
}

[data-theme="dark"] {
  --bg: #0A0A0A;
  --surface: #171717;
  --surface-elevated: #1F1F1F;
  --border: #262626;
  --border-subtle: #1F1F1F;
  --text-primary: #FAFAFA;
  --text-secondary: #A1A1AA;
  --text-muted: #71717A;
  --accent: #3B82F6;
  --accent-light: #60A5FA;
  --nav-bg: rgba(10, 10, 10, 0.85);
  --overlay-bg: rgba(10, 10, 10, 0.97);
  --card-hover-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
}

/* Arabic mode switches to the Cairo typeface */
[lang="ar"] body {
  font-family: var(--font-arabic), sans-serif;
}


/* ==========================================
   Reset & Base Styles
   ========================================== */

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

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

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

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; }


/* ==========================================
   Typography
   ========================================== */

h1 { font-size: clamp(2rem, 5vw, 3rem); font-weight: 700; line-height: 1.1; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.25rem); font-weight: 700; line-height: 1.2; }
h3 { font-size: clamp(1.1rem, 2.5vw, 1.5rem); font-weight: 600; line-height: 1.3; }
p  { color: var(--text-secondary); }


/* ==========================================
   Layout Utilities
   ========================================== */

.container {
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: 1.5rem;
}

section {
  padding-block: 5rem;
}

@media (max-width: 768px) {
  section { padding-block: 3rem; }
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-block-end: 0.75rem;
  font-weight: 500;
}

.section-heading {
  margin-block-end: 3rem;
}

.section-heading h2 {
  margin-block-end: 0.5rem;
}


/* ==========================================
   Skip Link (Accessibility)
   ========================================== */

.skip-link {
  position: absolute;
  top: -100%;
  inset-inline-start: 1rem;
  background: var(--accent);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: 0 0 6px 6px;
  font-weight: 600;
  z-index: 9999;
  transition: top 0.2s;
}

.skip-link:focus { top: 0; }


/* ==========================================
   Scroll Fade-in Animation
   ========================================== */

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}


/* ==========================================
   Buttons
   ========================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  transition: all 200ms ease;
  cursor: pointer;
}

.btn-primary {
  background-color: var(--accent);
  color: #fff;
  border: 2px solid var(--accent);
}

.btn-primary:hover {
  background-color: var(--accent-light);
  border-color: var(--accent-light);
  transform: translateY(-1px);
}

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

.btn-outline:hover {
  background-color: var(--accent);
  color: #fff;
  transform: translateY(-1px);
}

.btn-lg {
  padding: 0.9rem 2.5rem;
  font-size: 1.05rem;
}

.btn:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}


/* ==========================================
   Navigation
   ========================================== */

/* <header> is sticky so the entire nav (including the mobile drawer)
   stays pinned while content scrolls beneath it. */
header {
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav {
  background-color: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-block-end: 1px solid transparent;
  transition: border-color 200ms ease, background-color 200ms ease;
}

.nav.scrolled {
  border-block-end-color: var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 1rem;
}

.nav-logo {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.nav-logo:hover { color: var(--accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 200ms ease;
  position: relative;
}

/* Animated underline on nav links */
.nav-links a::after {
  content: '';
  position: absolute;
  inset-block-end: -2px;
  inset-inline-start: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 200ms ease;
}

.nav-links a:hover { color: var(--text-primary); }
.nav-links a:hover::after { width: 100%; }

.nav-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 8px;
  color: var(--text-secondary);
  transition: all 200ms ease;
  font-size: 0.85rem;
  font-weight: 600;
}

.nav-icon-btn:hover {
  color: var(--text-primary);
  background-color: var(--surface);
}

.nav-icon-btn:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.lang-btn {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

/* Hamburger button — transforms to X when expanded */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 6px;
  padding: 6px;
  border-radius: 6px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transform-origin: center;
  transition:
    transform 300ms cubic-bezier(0.4, 0, 0.2, 1),
    opacity   300ms cubic-bezier(0.4, 0, 0.2, 1),
    background-color 200ms ease;
}

/* Lines turn accent-colored when open */
.hamburger[aria-expanded="true"] span {
  background: var(--accent);
}

.hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.hamburger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Lift header above the overlay when the menu is open */
header.menu-open {
  z-index: 300;
}

@media (max-width: 768px) {
  .nav-links  { display: none; }
  .hamburger  { display: flex; }
}


/* ==========================================
   Mobile Overlay Menu
   ========================================== */

/* Hidden on desktop; rendered as fixed full-screen on mobile */
.mobile-overlay {
  display: none;
}

@media (max-width: 768px) {
  .mobile-overlay {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--overlay-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    /* Hidden state */
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 300ms ease, visibility 300ms ease;
  }

  .mobile-overlay.open {
    opacity: 1;
    visibility: visible;
    pointer-events: all;
  }
}

.mobile-overlay-nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.1rem;
  width: 100%;
  padding-inline: 2rem;
}

/* Each link starts invisible and off-screen; animates in when overlay opens */
.mobile-overlay-link {
  display: block;
  width: 100%;
  font-size: clamp(2rem, 8vw, 3rem);
  font-weight: 600;
  color: var(--text-primary);
  text-align: center;
  padding: 0.35rem 1rem;
  border-radius: 10px;
  opacity: 0;
  transform: translateX(40px);
  transition: color 200ms ease, background-color 200ms ease;
}

.mobile-overlay.open .mobile-overlay-link {
  animation: overlay-link-in 500ms cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.mobile-overlay.open .mobile-overlay-link:nth-child(1) { animation-delay: 80ms;  }
.mobile-overlay.open .mobile-overlay-link:nth-child(2) { animation-delay: 160ms; }
.mobile-overlay.open .mobile-overlay-link:nth-child(3) { animation-delay: 240ms; }
.mobile-overlay.open .mobile-overlay-link:nth-child(4) { animation-delay: 320ms; }
.mobile-overlay.open .mobile-overlay-link:nth-child(5) { animation-delay: 400ms; }

@keyframes overlay-link-in {
  from { opacity: 0; transform: translateX(40px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* RTL: slide from the other side */
[dir="rtl"] .mobile-overlay.open .mobile-overlay-link {
  animation-name: overlay-link-in-rtl;
}

@keyframes overlay-link-in-rtl {
  from { opacity: 0; transform: translateX(-40px); }
  to   { opacity: 1; transform: translateX(0); }
}

.mobile-overlay-link:hover,
.mobile-overlay-link:focus-visible {
  color: var(--accent);
  background: var(--surface);
  outline: none;
}

.mobile-overlay-link.is-active {
  color: var(--accent);
}

/* Footer row with theme & language toggles */
.mobile-overlay-footer {
  position: absolute;
  bottom: 3rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 300ms ease 420ms, transform 300ms ease 420ms;
}

.mobile-overlay.open .mobile-overlay-footer {
  opacity: 1;
  transform: translateY(0);
}

.mobile-overlay-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 3rem;
  height: 3rem;
  padding-inline: 1rem;
  border-radius: 10px;
  color: var(--text-secondary);
  background: var(--surface);
  border: 1px solid var(--border);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  transition: color 200ms ease, border-color 200ms ease;
}

.mobile-overlay-btn:hover {
  color: var(--text-primary);
  border-color: var(--accent);
}

.mobile-overlay-btn:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.mobile-lang-btn {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
}

@media (prefers-reduced-motion: reduce) {
  .mobile-overlay-link         { animation: none !important; opacity: 1; transform: none; }
  .mobile-overlay-footer       { transition: none; opacity: 1; transform: none; }
  .mobile-overlay              { transition: none; }
}


/* ==========================================
   Hero Section
   ========================================== */

#hero {
  position: relative;
  min-height: calc(100vh - 65px);
  display: flex;
  align-items: center;
  padding-block-start: 2.5rem;
  padding-block-end: 2.75rem;
  /* Dark theme: blue-tinted radial glow */
  background-image: radial-gradient(
    ellipse 800px 600px at 80% 20%,
    rgba(59, 130, 246, 0.08),
    transparent 70%
  );
  overflow: hidden;
}

/* Swap to a subtler glow in light mode */
[data-theme="light"] #hero {
  background-image: radial-gradient(
    ellipse 800px 600px at 80% 20%,
    rgba(31, 78, 121, 0.04),
    transparent 70%
  );
}

/* Subtle grid pattern that fades out from center */
#hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--border-subtle) 1px, transparent 1px),
    linear-gradient(to bottom, var(--border-subtle) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 600px 400px at center, black, transparent);
  -webkit-mask-image: radial-gradient(ellipse 600px 400px at center, black, transparent);
  opacity: 0.4;
  pointer-events: none;
  z-index: 0;
}

/* Content sits above the decorative ::before layer */
.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4rem;
  align-items: center;
}

/* Availability badge */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.25);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 500;
  color: #16a34a;
  margin-block-end: 1.25rem;
}

[data-theme="dark"] .hero-badge {
  color: #4ade80;
  background: rgba(34, 197, 94, 0.08);
  border-color: rgba(34, 197, 94, 0.2);
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22C55E;
  flex-shrink: 0;
  animation: pulse-dot 2s ease-in-out infinite;
}

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

.hero-greeting {
  font-size: 1.1rem;
  color: var(--accent);
  font-weight: 600;
  margin-block-end: 0.75rem;
  font-family: var(--font-mono);
}

.hero-title {
  color: var(--text-primary);
  margin-block-end: 0.5rem;
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.35rem);
  color: var(--accent);
  font-weight: 600;
  margin-block-end: 1.25rem;
}

.hero-tagline {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 520px;
  margin-block-end: 2.5rem;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Code snippet — macOS-style editor window */
.hero-code-wrap {
  min-width: 280px;
  flex-shrink: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.hero-code-titlebar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 0.85rem;
  background: var(--surface-elevated);
  border-block-end: 1px solid var(--border);
}

.mac-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}
.mac-dot-red    { background: #FF5F57; }
.mac-dot-yellow { background: #FEBC2E; }
.mac-dot-green  { background: #28C840; }

.hero-code-filename {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-inline-start: 0.25rem;
}

.hero-code {
  padding: 1.25rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.8;
  white-space: pre;
  color: var(--text-secondary);
}

/* Syntax highlight colours */
.hero-code .kw  { color: #8B5CF6; }
.hero-code .str { color: #10B981; }
.hero-code .key { color: var(--accent-light); }
.hero-code .arr { color: #F59E0B; }

/* Hero elements stagger in on page load */
.hero-anim {
  opacity: 0;
  transform: translateY(20px);
  animation: hero-fade-in 0.6s ease forwards;
}
.hero-anim-0 { animation-delay: 0ms; }
.hero-anim-1 { animation-delay: 100ms; }
.hero-anim-2 { animation-delay: 200ms; }
.hero-anim-3 { animation-delay: 300ms; }
.hero-anim-4 { animation-delay: 400ms; }
.hero-anim-5 { animation-delay: 500ms; }
.hero-anim-6 { animation-delay: 600ms; }

@keyframes hero-fade-in {
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .hero-anim { animation: none; opacity: 1; transform: none; }
}

@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero-code-wrap { display: none; }
}


/* ==========================================
   About Section
   ========================================== */

#about {
  background-color: var(--surface);
}

.about-body {
  max-width: 700px;
  margin-inline: auto;
  text-align: center;
}

.about-body .section-heading {
  text-align: center;
}

.about-text p + p {
  margin-block-start: 1.25rem;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-block-start: 3rem;
}

/* Cards start hidden; JS adds .visible when they scroll into view */
.stat-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem 1rem;
  text-align: center;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease, box-shadow 200ms ease;
}

.stat-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.stat-card:hover {
  box-shadow: var(--card-hover-shadow);
}

.stat-card.visible:hover {
  transform: translateY(-2px);
}

.stat-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  background: var(--surface);
  border-radius: 8px;
  color: var(--accent);
  margin-inline: auto;
  margin-block-end: 0.75rem;
}

[data-theme="dark"] .stat-icon {
  background: var(--surface-elevated);
}

.stat-number {
  font-size: 1.85rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-block-end: 0.35rem;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

@media (max-width: 600px) {
  .about-stats {
    grid-template-columns: 1fr;
    max-width: 260px;
    margin-inline: auto;
    margin-block-start: 2rem;
  }
}


/* ==========================================
   Tech Stack Section
   ========================================== */

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.skill-category {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.skill-category:hover {
  transform: translateY(-2px);
  box-shadow: var(--card-hover-shadow);
}

.skill-category-title {
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-block-end: 1rem;
  font-weight: 500;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-tag {
  display: inline-block;
  padding: 0.3rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.82rem;
  color: var(--text-secondary);
  transition: all 200ms ease;
  font-weight: 500;
}

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


/* ==========================================
   Projects Section
   ========================================== */

#projects {
  background-color: var(--surface);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.project-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.project-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--card-hover-shadow);
}

.project-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

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

.project-role-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.65rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.72rem;
  color: var(--text-secondary);
  white-space: nowrap;
  flex-shrink: 0;
  font-weight: 500;
}

[data-theme="dark"] .project-role-badge {
  background: var(--bg);
}

.project-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  flex: 1;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tech-tag {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.75rem;
  color: var(--accent);
  font-family: var(--font-mono);
  font-weight: 500;
}

[data-theme="dark"] .tech-tag {
  background: var(--bg);
}

@media (max-width: 768px) {
  .projects-grid { grid-template-columns: 1fr; }
  .project-header { flex-direction: column; }
}


/* ==========================================
   Experience Section — Timeline
   ========================================== */

.timeline {
  position: relative;
  padding-inline-start: 2rem;
}

/* Vertical connecting line */
.timeline::before {
  content: '';
  position: absolute;
  inset-inline-start: 7px;
  inset-block: 0;
  width: 2px;
  background: var(--border);
}

.timeline-item {
  position: relative;
  padding-block-end: 2.5rem;
}

.timeline-item:last-child { padding-block-end: 0; }

/* Dot on the timeline line */
.timeline-dot {
  position: absolute;
  inset-inline-start: -2rem;
  inset-block-start: 0.3rem;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
  z-index: 1;
}

/* Current role gets a filled dot */
.timeline-item:first-child .timeline-dot {
  background: var(--accent);
}

.timeline-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.75rem;
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.timeline-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--card-hover-shadow);
}

.timeline-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-block-end: 0.5rem;
}

.timeline-role {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
}

.timeline-company {
  color: var(--accent);
}

.timeline-period {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  white-space: nowrap;
  flex-shrink: 0;
}

.timeline-location {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-block-end: 1rem;
}

.timeline-bullets {
  padding-inline-start: 1.1rem;
  list-style: disc;
}

.timeline-bullets li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-block-end: 0.4rem;
}

.timeline-bullets li:last-child { margin-block-end: 0; }

@media (max-width: 768px) {
  .timeline-header { flex-direction: column; }
}


/* ==========================================
   Contact Section
   ========================================== */

#contact {
  background-color: var(--surface);
}

.contact-centered {
  max-width: 700px;
  margin-inline: auto;
  text-align: center;
}

.contact-centered .section-heading {
  text-align: center;
  margin-block-end: 1.25rem;
}

.contact-description {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-block-end: 2.5rem;
}

/* 4-column icon grid; collapses to 2x2 on mobile */
.contact-icon-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-block-start: 3rem;
}

.contact-icon-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  padding: 1.5rem 0.75rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  color: inherit;
  transition: border-color 200ms ease, transform 200ms ease;
}

.contact-icon-item:hover {
  border-color: var(--accent);
  transform: scale(1.02);
}

.contact-icon-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}

.contact-icon-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  font-weight: 500;
}

.contact-icon-value {
  font-size: 0.72rem;
  color: var(--text-muted);
  word-break: break-all;
  text-align: center;
}

@media (max-width: 640px) {
  .contact-icon-grid { grid-template-columns: repeat(2, 1fr); }
}


/* ==========================================
   Footer
   ========================================== */

footer {
  background: var(--bg);
  border-block-start: 1px solid var(--border);
  padding-block: 2rem;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-copy {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.footer-links a {
  display: flex;
  align-items: center;
  color: var(--text-secondary);
  transition: color 200ms ease;
}

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


/* ==========================================
   Focus Styles (Accessibility)
   ========================================== */

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}