/* ---------- DESIGN TOKENS ---------- */
:root,
[data-theme="light"] {
  --color-bg: #f6f8fa;
  --color-surface: #ffffff;
  --color-surface-2: #fafaf8;
  --color-surface-offset: #edeae4;
  --color-surface-offset-2: #e6e3dd;
  --color-surface-dynamic: #dedad3;
  --color-divider: #d9d5ce;
  --color-border: #cdc9c1;
  --color-logo: #000000;
  --color-logo-stroke: #ffffff;

  --color-text: #1a1814;
  --color-text-muted: #6b6a65;
  --color-text-faint: #b0afa9;
  --color-text-inverse: #f8f7f4;

  --color-primary: #1E3A5F;
  --color-primary-hover: #162D4A;
  --color-primary-active: #102238;

  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-sm: 0 1px 2px oklch(0.2 0.01 80 / 0.06);
  --shadow-md: 0 4px 12px oklch(0.2 0.01 80 / 0.09);
  --shadow-lg: 0 12px 32px oklch(0.2 0.01 80 / 0.13);

  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;

  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-hero: clamp(3rem, 0.5rem + 7vw, 7rem);

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'Satoshi', 'Inter', system-ui, sans-serif;
}

[data-theme="dark"] {
  --color-bg: #0e0f11;
  --color-surface: #15171a;
  --color-surface-2: #1a1a18;
  --color-surface-offset: #1e1e1b;
  --color-surface-offset-2: #232320;
  --color-surface-dynamic: #2a2a27;
  --color-divider: #252523;
  --color-border: #333330;
  --color-logo: #ffffff;
  --color-logo-stroke: #000000;

  --color-text: #d4d3d0;
  --color-text-muted: #78776f;
  --color-text-faint: #524f4a;
  --color-text-inverse: #1a1814;

  --color-primary: #5C7AEA;
  --color-primary-hover: #4A67D8;
  --color-primary-active: #3E58C2;
  --color-primary-highlight: #252E52;

  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.25);
  --shadow-md: 0 4px 12px oklch(0 0 0 / 0.35);
  --shadow-lg: 0 12px 32px oklch(0 0 0 / 0.45);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    color-scheme: dark;
  }
}

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

html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-20);
}

body {
  min-height: 100dvh;
  line-height: 1.65;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

ul[role="list"],
ol[role="list"] {
  list-style: none;
}

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

h1,
h2,
h3,
h4 {
  text-wrap: balance;
  line-height: 1.15;
}

p,
li {
  text-wrap: pretty;
}

button {
  cursor: pointer;
  background: none;
  border: none;
}

a {
  color: inherit;
  text-decoration: none;
}

::selection {
  background: oklch(from var(--color-primary) l c h / 0.2);
  color: var(--color-text);
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* Screen reader only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ---------- LAYOUT UTILITIES ---------- */
.container {
  max-width: var(--content-default);
  margin-inline: auto;
  padding-inline: clamp(var(--space-4), 5vw, var(--space-12));
}

.container--wide {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-4), 5vw, var(--space-12));
}

section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
}

/* ---------- SKIP LINK ---------- */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  z-index: 9999;
  transition: top 0.2s;
}

.skip-link:focus {
  top: var(--space-4);
}

/* ---------- HEADER & NAV ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding-block: var(--space-4);
  border-bottom: 1px solid transparent;
  transition:
    background var(--transition-interactive),
    border-color var(--transition-interactive),
    backdrop-filter var(--transition-interactive);
}

.site-header.scrolled {
  background: oklch(from var(--color-bg) l c h / 0.85);
  border-bottom-color: var(--color-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-text);
  transition: color var(--transition-interactive);
}

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

.logo svg {
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-links a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition-interactive);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 100%;
  height: 1px;
  background: var(--color-primary);
  transition: right var(--transition-interactive);
}

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

.nav-links a:hover::after {
  right: 0;
}

.nav-links a.active {
  color: var(--color-text);
}

.nav-links a.active::after {
  right: 0;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.theme-toggle {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition:
    color var(--transition-interactive),
    background var(--transition-interactive);
}

.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

.btn-hire {
  padding: var(--space-2) var(--space-5);
  font-size: var(--text-sm);
  font-weight: 600;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-full);
  transition:
    background var(--transition-interactive),
    transform var(--transition-interactive),
    box-shadow var(--transition-interactive);
}

.btn-hire:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-hire:active {
  transform: translateY(0);
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition:
    color var(--transition-interactive),
    background var(--transition-interactive);
}

.menu-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

/* Mobile nav */
.mobile-nav {
  display: none;
  flex-direction: column;
  position: fixed;
  inset: 0;
  z-index: 99;
  background: var(--color-bg);
  padding: var(--space-20) var(--space-6) var(--space-8);
  gap: var(--space-2);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition:
    opacity 0.25s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-nav.open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.mobile-nav a {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-muted);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-divider);
  transition: color var(--transition-interactive);
}

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

/* ---------- HERO ---------- */
#hero {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  padding-top: var(--space-24);
  padding-bottom: var(--space-16);
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.hero-bg::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 60vw;
  height: 60vw;
  max-width: 700px;
  max-height: 700px;
  background: radial-gradient(circle,
      oklch(from var(--color-primary) l c h / 0.08) 0%,
      transparent 70%);
  border-radius: 50%;
}

.hero-bg::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: -5%;
  width: 40vw;
  height: 40vw;
  max-width: 400px;
  background: radial-gradient(circle,
      oklch(from var(--color-primary) l c h / 0.05) 0%,
      transparent 70%);
  border-radius: 50%;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(oklch(from var(--color-text) l c h / 0.025) 1px, transparent 1px),
    linear-gradient(90deg, oklch(from var(--color-text) l c h / 0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black 30%, transparent 100%);
}

.hero-inner {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--space-6);
}

.hero-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {

  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }

  50% {
    opacity: 0.5;
    transform: scale(0.8);
  }
}

.hero-name {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 60;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.hero-name em {
  font-style: italic;
  color: var(--color-primary);
}

.hero-tagline {
  font-size: var(--text-xl);
  font-weight: 400;
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
  max-width: 620px;
  line-height: 1.35;
}

.hero-tagline strong {
  color: var(--color-text);
  font-weight: 600;
}

.hero-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 520px;
  margin-bottom: var(--space-10);
  line-height: 1.7;
}

.hero-ctas {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-10);
}

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-full);
  transition:
    background var(--transition-interactive),
    transform var(--transition-interactive),
    box-shadow var(--transition-interactive),
    color var(--transition-interactive),
    border-color var(--transition-interactive);
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.btn-secondary {
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  color: var(--color-text);
  border-color: var(--color-text-muted);
  background: var(--color-surface-offset);
  transform: translateY(-1px);
}

.hero-social {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.social-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition-interactive);
}

.social-link:hover {
  color: var(--color-primary);
}

.social-divider {
  color: var(--color-text-faint);
}

.scroll-indicator {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-faint);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  animation: scroll-bounce 2s ease-in-out infinite;
}

@keyframes scroll-bounce {

  0%,
  100% {
    transform: translateX(-50%) translateY(0);
    opacity: 0.5;
  }

  50% {
    transform: translateX(-50%) translateY(4px);
    opacity: 1;
  }
}

/* ---------- SECTION HEADERS ---------- */
.section-label {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  line-height: 1.1;
  color: var(--color-text);
  margin-bottom: var(--space-6);
  letter-spacing: -0.02em;
}

.section-title em {
  font-style: italic;
  color: var(--color-primary);
}

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

.about-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: clamp(var(--space-10), 6vw, var(--space-16));
  align-items: start;
}

.about-text p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: var(--space-4);
  max-width: 65ch;
}

.about-text p:last-child {
  margin-bottom: 0;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.stat-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
}

.stat-number {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: 500;
}

.about-side {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.section-subtitle {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.about-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.about-list li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.about-list strong {
  color: var(--color-text);
  font-weight: 600;
}

/* ---------- SKILLS ---------- */
#skills {
  background: var(--color-bg);
}

.skills-grid {
  margin-top: var(--space-6);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-6);
}

.skill-group-title {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-3);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.skill-tag {
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  transition:
    color var(--transition-interactive),
    background var(--transition-interactive),
    border-color var(--transition-interactive);
}

.skill-tag:hover {
  color: var(--color-primary);
  background: var(--color-primary-highlight);
  border-color: var(--color-primary);
}

.skill-tag.primary {
  color: var(--color-primary);
  background: var(--color-primary-highlight);
  border-color: oklch(from var(--color-primary) l c h / 0.3);
}

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

#projects .section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: var(--space-12);
  gap: var(--space-6);
  flex-wrap: wrap;
}

.view-all {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  transition:
    gap var(--transition-interactive),
    color var(--transition-interactive);
}

.view-all:hover {
  gap: var(--space-2);
  color: var(--color-primary-hover);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-5);
}

.project-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition:
    box-shadow var(--transition-interactive),
    border-color var(--transition-interactive),
    transform var(--transition-interactive);
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), transparent);
  opacity: 0;
  transition: opacity var(--transition-interactive);
}

.project-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: oklch(from var(--color-border) l c h / 0.8);
}

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

.project-card--featured {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) auto;
  gap: var(--space-8);
  align-items: flex-start;
  border-color: var(--color-primary);
}

.project-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
}

.project-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-lg);
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  flex-shrink: 0;
}

.project-links {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.project-link {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-text-faint);
  transition:
    color var(--transition-interactive),
    background var(--transition-interactive);
}

.project-link:hover {
  color: var(--color-primary);
  background: var(--color-surface-offset);
}

.project-name {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
  line-height: 1.2;
}

.project-problem {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.project-impact {
  list-style: disc;
  margin-left: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding-bottom: 2%;
}

.project-tech {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-top: var(--space-2);
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: auto;
}

.project-tag {
  padding: 2px var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-faint);
  background: var(--color-surface-offset);
  border-radius: var(--radius-sm);
}

.featured-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-3);
  flex-shrink: 0;
}

@media (max-width: 640px) {
  .featured-meta {
    align-items: flex-start;
    flex-direction: row;
    flex-wrap: wrap;
  }
}

.version-badge,
.status-badge {
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 700;
  border-radius: var(--radius-full);
}

.version-badge {
  color: var(--color-primary);
  background: var(--color-primary-highlight);
  border: 1px solid oklch(from var(--color-primary) l c h / 0.25);
}

.status-badge {
  color: #fff;
  background: var(--color-primary);
}

/* ---------- EXPERIENCE ---------- */
#experience {
  background: var(--color-bg);
}

.experience-layout {
  margin-top: var(--space-8);
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: clamp(var(--space-10), 6vw, var(--space-16));
}

.timeline {
  position: relative;
  padding-left: var(--space-8);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(to bottom, var(--color-primary) 0%, var(--color-border) 100%);
}

.timeline-item {
  position: relative;
  padding-bottom: var(--space-10);
}

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

.timeline-dot {
  position: absolute;
  left: calc(-1 * var(--space-8) - 5px);
  top: 5px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--color-bg);
  border: 2px solid var(--color-primary);
}

.timeline-period {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.timeline-role {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.timeline-org {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.timeline-details {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.timeline-details li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding-left: var(--space-4);
  position: relative;
  line-height: 1.6;
}

.timeline-details li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 1px;
  background: var(--color-primary);
}

.experience-focus {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.experience-subtitle {
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}

.experience-cards {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.experience-card {
  background: var(--color-bg);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  padding: var(--space-5);
}

.experience-card h4 {
  font-size: var(--text-sm);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.experience-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

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

.contact-layout {
  display: grid;
  grid-template-columns: 1.2fr 1.2fr;
  gap: clamp(var(--space-10), 6vw, var(--space-16));
  align-items: start;
}

.contact-lead {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.75;
  max-width: 50ch;
  margin-bottom: var(--space-8);
}

.contact-info-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
}

.contact-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  flex-shrink: 0;
}

.contact-item-label {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-faint);
  margin-bottom: var(--space-1);
}

.contact-item-value {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
}

.contact-item-value a {
  transition: color var(--transition-interactive);
}

.contact-item-value a:hover {
  color: var(--color-primary);
}

.contact-social {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-8);
}

.social-icon-btn {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  transition:
    color var(--transition-interactive),
    background var(--transition-interactive),
    border-color var(--transition-interactive),
    transform var(--transition-interactive);
}

.social-icon-btn:hover {
  color: var(--color-primary);
  background: var(--color-primary-highlight);
  border-color: oklch(from var(--color-primary) l c h / 0.3);
  transform: translateY(-2px);
}

/* Contact form */
.contact-form-wrap {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: clamp(var(--space-6), 4vw, var(--space-10));
}

.form-title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-6);
}

.form-group {
  margin-bottom: var(--space-5);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.form-group label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  outline: none;
  transition:
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive),
    background var(--transition-interactive);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px oklch(from var(--color-primary) l c h / 0.12);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-faint);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-submit {
  width: 100%;
  padding: var(--space-4);
  font-size: var(--text-sm);
  font-weight: 700;
  color: #fff;
  background: var(--color-primary);
  border-radius: var(--radius-lg);
  transition:
    background var(--transition-interactive),
    transform var(--transition-interactive),
    box-shadow var(--transition-interactive);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}

.form-submit:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.form-submit:active {
  transform: translateY(0);
}

.form-alt {
  margin-top: var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.form-alt a {
  color: var(--color-primary);
  font-weight: 600;
}

.form-success {
  display: none;
  text-align: center;
  padding: var(--space-8) var(--space-4) 0;
  color: var(--color-primary);
  font-size: var(--text-base);
  font-weight: 600;
}

.form-success svg {
  margin: 0 auto var(--space-4);
}

/* ---------- FOOTER ---------- */
footer {
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-8);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.footer-copy {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.footer-links {
  display: flex;
  gap: var(--space-6);
}

.footer-links a {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  transition: color var(--transition-interactive);
}

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

/* ---------- ANIMATIONS (FADE/SLIDE-IN) ---------- */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition:
    opacity 450ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 450ms cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 1024px) {
  .skills-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

  .experience-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {

  .nav-links,
  .btn-hire {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .mobile-nav {
    display: flex;
  }

  .about-grid,
  .skills-grid,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .about-stats {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .hero-name {
    font-size: clamp(2.4rem, 7vw, 3.2rem);
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .about-stats {
    grid-template-columns: 1fr;
  }
}