/*  ============================
    Design Theme
    ============================ */

:root {
  /* Type Scale */
  --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-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);
  --text-hero: clamp(3rem, 0.5rem + 7vw, 8rem);

  /* Spacing */
  --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;
  --space-32: 8rem;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;

  /* Fonts */
  --font-display: "JetBrains Mono", "Courier New", monospace;
  --font-body: "Inter", "Helvetica Neue", sans-serif;
}

/* ===== LIGHT MODE ===== */
:root,
[data-theme="light"] {
  --color-bg: #f5f5f0;
  --color-surface: #ffffff;
  --color-surface-2: #fafaf7;
  --color-surface-offset: #ededea;
  --color-divider: #deddd9;
  --color-border: #d0cfcb;

  --color-text: #1a1a1a;
  --color-text-muted: #6b6b6b;
  --color-text-faint: #a3a3a3;

  --color-primary: #0969da;
  --color-primary-hover: #0550ae;
  --color-primary-active: #033d8b;
  --color-primary-highlight: #ddf4ff;

  --color-accent: #1a7f37;
  --color-accent-hover: #116329;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.12);
}

/* ===== DARK MODE ===== */
[data-theme="dark"] {
  --color-bg: #0d1117;
  --color-surface: #161b22;
  --color-surface-2: #1c2128;
  --color-surface-offset: #21262d;
  --color-divider: #30363d;
  --color-border: #30363d;

  --color-text: #e6edf3;
  --color-text-muted: #8b949e;
  --color-text-faint: #484f58;

  --color-primary: #58a6ff;
  --color-primary-hover: #79c0ff;
  --color-primary-active: #a5d6ff;
  --color-primary-highlight: #0c2d6b;

  --color-accent: #3fb950;
  --color-accent-hover: #56d364;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #0d1117;
    --color-surface: #161b22;
    --color-surface-2: #1c2128;
    --color-surface-offset: #21262d;
    --color-divider: #30363d;
    --color-border: #30363d;
    --color-text: #e6edf3;
    --color-text-muted: #8b949e;
    --color-text-faint: #484f58;
    --color-primary: #58a6ff;
    --color-primary-hover: #79c0ff;
    --color-primary-active: #a5d6ff;
    --color-primary-highlight: #0c2d6b;
    --color-accent: #3fb950;
    --color-accent-hover: #56d364;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5);
  }
}

/*  ============================
    Component Style
    ============================ */

/* --- SKIP LINK --- */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-sm);
  z-index: 100;
  font-size: var(--text-sm);
}
.skip-link:focus {
  top: var(--space-2);
}

/* --- HEADER --- */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: oklch(from var(--color-bg) l c h / 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-divider);
  transition:
    transform 0.3s var(--ease-out),
    box-shadow 0.3s var(--ease-out);
}
.header--hidden {
  transform: translateY(-100%);
}
.header--scrolled {
  box-shadow: var(--shadow-sm);
}

.header__inner {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding: var(--space-3) var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: -0.02em;
}
.header__logo svg {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.header__nav-link {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-md);
  transition:
    color var(--transition-interactive),
    background var(--transition-interactive);
}
.header__nav-link:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

.theme-toggle {
  padding: var(--space-2);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    color var(--transition-interactive),
    background var(--transition-interactive);
}

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

.mobile-toggle {
  display: none;
  padding: var(--space-2);
  color: var(--color-text-muted);
  border-radius: var(--radius-md);
}

/* --- HERO --- */
.hero {
  min-height: 80vh;
  display: flex;
  align-items: center;
  padding: var(--space-16) var(--space-4);
}
.hero__inner {
  max-width: var(--content-wide);
  margin-inline: auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  font-family: var(--font-display);
  margin-bottom: var(--space-4);
  width: fit-content;
}
.hero__badge .status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.4;
  }
}

.hero__heading {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}
.hero__heading .accent {
  color: var(--color-primary);
}

.hero__desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 50ch;
  margin-bottom: var(--space-6);
}

.hero__actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  transition:
    background var(--transition-interactive),
    color var(--transition-interactive),
    box-shadow var(--transition-interactive),
    transform var(--transition-interactive);
}
.btn:hover {
  transform: translateY(-1px);
}
.btn:active {
  transform: translateY(0);
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
}
.btn--primary:hover {
  background: var(--color-primary-hover);
  box-shadow: var(--shadow-md);
}

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

.btn svg {
  width: 16px;
  height: 16px;
}

/* Hero terminal */
.hero__terminal {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.terminal__header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface-offset);
  border-bottom: 1px solid var(--color-divider);
}
.terminal__dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.terminal__dot--red {
  background: #ff5f57;
}
.terminal__dot--yellow {
  background: #febc2e;
}
.terminal__dot--green {
  background: #28c840;
}
.terminal__title {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-left: var(--space-2);
}

.terminal__body {
  padding: var(--space-4);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  line-height: 1.8;
  color: var(--color-text-muted);
  min-height: 280px;
}
.terminal__line {
  opacity: 0;
  animation: termLine 0.3s var(--ease-out) forwards;
}
.terminal__line .prompt {
  color: var(--color-accent);
}
.terminal__line .cmd {
  color: var(--color-text);
}
.terminal__line .string {
  color: var(--color-primary);
}
.terminal__line .comment {
  color: var(--color-text-faint);
  font-style: italic;
}
.terminal__line .key {
  color: var(--color-accent);
}
.terminal__line .bracket {
  color: var(--color-text-faint);
}

@keyframes termLine {
  from {
    opacity: 0;
    transform: translateX(-4px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.terminal__cursor {
  display: inline-block;
  width: 8px;
  height: 16px;
  background: var(--color-primary);
  animation: blink 1s steps(1) infinite;
  vertical-align: middle;
  margin-left: 2px;
}
@keyframes blink {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0;
  }
}

/* --- SECTION DEFAULTS --- */
.section {
  padding: clamp(var(--space-12), 8vw, var(--space-24)) var(--space-4);
}
.section__inner {
  max-width: var(--content-wide);
  margin-inline: auto;
}
.section__label {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-2);
}
.section__heading {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}
.section__desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 55ch;
  margin-bottom: var(--space-10);
}
/* --- ABOUT --- */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-12);
  align-items: start;
}
.about__text {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
}
.about__text p + p {
  margin-top: var(--space-4);
}
.about__text strong {
  color: var(--color-text);
  font-weight: 600;
}

.about__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}
.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}
.stat-card__icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--color-primary-highlight);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-3);
  color: var(--color-primary);
}
.stat-card__icon svg {
  width: 20px;
  height: 20px;
}
.stat-card__value {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-1);
}
.stat-card__label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* --- SKILLS --- */
.skills__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(280px, 100%), 1fr));
  gap: var(--space-4);
}

.skill-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  transition:
    box-shadow var(--transition-interactive),
    transform var(--transition-interactive),
    border-color var(--transition-interactive);
}
.skill-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: var(--color-primary);
}

.skill-card__header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}
.skill-card__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 22px;
  font-weight: 700;
  font-family: var(--font-display);
}
.skill-card__icon--ts {
  background: #3178c620;
  color: #3178c6;
}
.skill-card__icon--js {
  background: #f7df1e20;
  color: #b09b00;
}
.skill-card__icon--py {
  background: #63c63120;
  color: #59c631;
}
.skill-card__icon--react {
  background: #61dafb20;
  color: #087ea4;
}
.skill-card__icon--node {
  background: #33993320;
  color: #339933;
}
.skill-card__icon--supa {
  background: #3ecf8e20;
  color: #3ecf8e;
}
.skill-card__icon--vite {
  background: #646cff20;
  color: #646cff;
}
.skill-card__icon--rn {
  background: #61dafb20;
  color: #087ea4;
}
.skill-card__icon--exp {
  background: #00000010;
  color: var(--color-text);
}

[data-theme="dark"] .skill-card__icon--js {
  color: #f7df1e;
}
[data-theme="dark"] .skill-card__icon--next {
  background: #ffffff10;
}
[data-theme="dark"] .skill-card__icon--exp {
  background: #ffffff10;
}
[data-theme="dark"] .skill-card__icon--react {
  color: #61dafb;
}
[data-theme="dark"] .skill-card__icon--rn {
  color: #61dafb;
}

.skill-card__name {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}
.skill-card__level {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.skill-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-3);
}

.skill-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
}
.tag {
  display: inline-block;
  padding: var(--space-1) var(--space-2);
  background: var(--color-surface-offset);
  color: var(--color-text-muted);
  font-size: 11px;
  font-family: var(--font-display);
  border-radius: var(--radius-sm);
}

/* --- PROJECTS --- */
.projects__grid {
  display: grid;
  gap: var(--space-6);
}

.project-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr 1fr;
  transition:
    box-shadow var(--transition-interactive),
    transform var(--transition-interactive);
}
.project-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}
.project-card:nth-child(even) {
  direction: rtl;
}
.project-card:nth-child(even) > * {
  direction: ltr;
}

.project-card__visual {
  background: var(--color-surface-offset);
  padding: var(--space-8);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 300px;
  position: relative;
  overflow: hidden;
}

.project-card__mockup {
  width: 100%;
  max-width: 320px;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.mockup__bar {
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface-offset);
  border-bottom: 1px solid var(--color-divider);
  display: flex;
  gap: 6px;
  align-items: center;
}
.mockup__bar-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-border);
}
.mockup__content {
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.mockup__line {
  height: 10px;
  background: var(--color-surface-offset);
  border-radius: var(--radius-sm);
}
.mockup__line--short {
  width: 60%;
}
.mockup__line--medium {
  width: 80%;
}
.mockup__line--long {
  width: 100%;
}
.mockup__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2);
}
.mockup__block {
  height: 48px;
  background: var(--color-surface-offset);
  border-radius: var(--radius-sm);
}
.mockup__block--accent {
  background: var(--color-primary-highlight);
}

/* Phone mockup for mobile apps */
.project-card__phone {
  width: 200px;
  background: var(--color-surface);
  border-radius: 24px;
  border: 3px solid var(--color-border);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.phone__notch {
  width: 80px;
  height: 20px;
  background: var(--color-border);
  border-radius: 0 0 12px 12px;
  margin: 0 auto;
}
.phone__content {
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.phone__tab-bar {
  display: flex;
  gap: var(--space-1);
  padding: var(--space-2) 0;
  border-top: 1px solid var(--color-divider);
  margin-top: var(--space-2);
}
.phone__tab {
  flex: 1;
  height: 6px;
  background: var(--color-surface-offset);
  border-radius: var(--radius-sm);
}
.phone__tab--active {
  background: var(--color-primary);
}

.project-card__info {
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.project-card__type {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-2);
}
.project-card__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-3);
}
.project-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-4);
}
.project-card__tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}
.project-card__links {
  display: flex;
  gap: var(--space-3);
}
.project-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  font-family: var(--font-display);
  color: var(--color-text-muted);
  text-decoration: none;
  padding: var(--space-1) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition:
    color var(--transition-interactive),
    border-color var(--transition-interactive),
    background var(--transition-interactive);
}
.project-link:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: var(--color-primary-highlight);
}
.project-link svg {
  width: 14px;
  height: 14px;
}

/* --- EXPERIENCE TIMELINE --- */
.timeline {
  position: relative;
  padding-left: var(--space-8);
}
.timeline::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background: var(--color-divider);
}
.timeline__item {
  position: relative;
  padding-bottom: var(--space-8);
}
.timeline__item:last-child {
  padding-bottom: 0;
}
.timeline__dot {
  position: absolute;
  left: calc(-1 * var(--space-8) + 6px);
  top: 4px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 3px solid var(--color-bg);
  z-index: 1;
}
.timeline__date {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-bottom: var(--space-1);
}
.timeline__title {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-1);
}
.timeline__company {
  font-size: var(--text-sm);
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}
.timeline__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* --- CONTACT --- */
.contact {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
}
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: start;
}
.contact__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.contact-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition:
    color var(--transition-interactive),
    border-color var(--transition-interactive),
    background var(--transition-interactive),
    transform var(--transition-interactive);
}
.contact-link:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: var(--color-primary-highlight);
  transform: translateX(4px);
}
.contact-link svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}
.contact-link span {
  font-family: var(--font-display);
}

.contact__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.form-group label {
  font-size: var(--text-xs);
  font-family: var(--font-display);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.form-group input,
.form-group textarea {
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-text);
  transition:
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive);
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px oklch(from var(--color-primary) l c h / 0.15);
}
.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* --- FOOTER --- */
.footer {
  padding: var(--space-6) var(--space-4);
  border-top: 1px solid var(--color-divider);
  background: var(--color-bg);
}
.footer__inner {
  max-width: var(--content-wide);
  margin-inline: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer__copy {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}
.footer__attribution a {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-decoration: none;
  transition: color var(--transition-interactive);
}
.footer__attribution a:hover {
  color: var(--color-text-muted);
}

/* --- SCROLL ANIMATIONS --- 
   Uses IntersectionObserver JS fallback for broad support */
.fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- MOBILE --- */
@media (max-width: 768px) {
  .mobile-toggle {
    display: flex;
  }

  .header__nav {
    position: fixed;
    top: 0;
    right: 0;
    width: min(320px, 85vw);
    height: 100dvh;
    background: var(--color-surface);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-16) var(--space-6);
    gap: var(--space-1);
    transition: transform 0.3s var(--ease-out);
    box-shadow: var(--shadow-lg);
    z-index: 100;
    transform: translateX(100%);
  }
  .header__nav.is-open {
    transform: translateX(0);
  }
  .header__nav-link {
    font-size: var(--text-base);
    padding: var(--space-3) var(--space-4);
  }

  .nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition:
      opacity 0.3s var(--ease-out),
      visibility 0.3s var(--ease-out);
    z-index: 50;
  }
  .nav-overlay.is-visible {
    opacity: 1;
    visibility: visible;
  }

  .hero {
    min-height: auto;
    padding: var(--space-10) var(--space-4);
  }
  .hero__inner {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  .hero__heading {
    font-size: var(--text-2xl);
  }
  .hero__terminal {
    order: -1;
  }

  .about__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  .about__stats {
    order: -1;
  }

  .project-card {
    grid-template-columns: 1fr;
  }
  .project-card:nth-child(even) {
    direction: ltr;
  }
  .project-card__visual {
    min-height: 200px;
    padding: var(--space-6);
  }
  .project-card__info {
    padding: var(--space-6);
  }

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

  .footer__inner {
    flex-direction: column;
    gap: var(--space-2);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .about__stats {
    grid-template-columns: 1fr;
  }
  .hero__actions {
    flex-direction: column;
  }
  .hero__actions .btn {
    justify-content: center;
  }
}