:root {
  --font-sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Inter",
    "Segoe UI", Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";

  --step--1: 0.875rem;
  --step-0: 1rem;
  --step-1: 1.125rem;
  --step-2: 1.375rem;
  --step-3: 1.75rem;
  --step-4: 2.25rem;
  --step-5: clamp(2.5rem, 5vw, 3.25rem);

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;

  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 22px;
  --radius-xl: 28px;

  --shadow-sm: 0 1px 1px rgba(0, 0, 0, 0.08), 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.14);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.18);

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.7, 0, 0.2, 1);
  --dur-1: 150ms;
  --dur-2: 220ms;
  --dur-3: 420ms;
}

/* Light theme defaults */
html[data-theme="light"] {
  color-scheme: light;
  --bg: #f7f9ff;
  --bg-2: #eef2ff;
  --surface: rgba(255, 255, 255, 0.75);
  --surface-2: rgba(255, 255, 255, 0.55);
  --border: rgba(15, 23, 42, 0.12);
  --text: #0b1220;
  --muted: rgba(11, 18, 32, 0.7);
  --muted-2: rgba(11, 18, 32, 0.55);
  --primary: #2563eb;
  --primary-2: #7c3aed;
  --accent: #06b6d4;
  --danger: #ef4444;
  --focus: rgba(37, 99, 235, 0.35);
  --grad-a: rgba(37, 99, 235, 0.18);
  --grad-b: rgba(124, 58, 237, 0.16);
  --grad-c: rgba(6, 182, 212, 0.14);
}

/* Dark theme */
html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #070b14;
  --bg-2: #0b1220;
  --surface: rgba(255, 255, 255, 0.06);
  --surface-2: rgba(255, 255, 255, 0.04);
  --border: rgba(255, 255, 255, 0.12);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.68);
  --muted-2: rgba(255, 255, 255, 0.52);
  --primary: #7dd3fc;
  --primary-2: #a78bfa;
  --accent: #22c55e;
  --danger: #fb7185;
  --focus: rgba(125, 211, 252, 0.38);
  --grad-a: rgba(125, 211, 252, 0.12);
  --grad-b: rgba(167, 139, 250, 0.12);
  --grad-c: rgba(34, 197, 94, 0.12);
}

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--step-0);
  line-height: 1.55;
  color: var(--text);
  background: radial-gradient(1200px 800px at 20% 10%, var(--grad-a), transparent 60%),
    radial-gradient(1200px 800px at 80% 20%, var(--grad-b), transparent 60%),
    radial-gradient(1200px 800px at 55% 90%, var(--grad-c), transparent 60%), var(--bg);
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

button,
input,
textarea {
  font: inherit;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
  border-radius: 10px;
}

.skip-link {
  position: absolute;
  top: 0;
  left: 0;
  transform: translateY(-120%);
  padding: 12px 14px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 0 0 var(--radius-md) 0;
  z-index: 9999;
}
.skip-link:focus {
  transform: translateY(0);
}

.container {
  width: min(1120px, calc(100% - 2 * var(--space-5)));
  margin-inline: auto;
}

.muted {
  color: var(--muted);
}

.h2 {
  font-size: clamp(1.7rem, 3vw, 2.1rem);
  letter-spacing: -0.02em;
  margin: 0;
}

.h3 {
  font-size: 1.125rem;
  letter-spacing: -0.01em;
  margin: 0;
}

.section {
  padding: clamp(3.25rem, 6vw, 5rem) 0;
}

.section--alt {
  background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.03));
}

.section__head {
  display: grid;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
  max-width: 74ch;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg), transparent 35%);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-2) var(--ease-out),
    background var(--dur-2) var(--ease-out);
}

.site-header.is-scrolled {
  background: color-mix(in srgb, var(--bg), transparent 18%);
  border-bottom-color: var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: 14px 0;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
}

.brand__logo {
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand__subtitle {
  font-size: 0.85rem;
  color: var(--muted);
  letter-spacing: -0.01em;
}

.nav__toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 42px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 14px;
  color: var(--text);
  cursor: pointer;
  transition: transform var(--dur-2) var(--ease-out),
    background var(--dur-2) var(--ease-out);
}

.nav__toggle:active {
  transform: scale(0.98);
}

.nav__toggle-lines {
  width: 20px;
  height: 14px;
  display: grid;
  gap: 4px;
}

.nav__toggle-lines span {
  height: 2px;
  width: 100%;
  background: currentColor;
  border-radius: 999px;
  transition: transform var(--dur-2) var(--ease-in-out), opacity var(--dur-2) var(--ease-in-out);
}

.nav__right {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: 0;
  margin: 0;
  list-style: none;
}

.nav__link {
  font-size: 0.95rem;
  color: var(--muted);
  padding: 10px 10px;
  border-radius: 12px;
  transition: background var(--dur-1) var(--ease-out), color var(--dur-1) var(--ease-out);
}

.nav__link:hover {
  color: var(--text);
  background: color-mix(in srgb, var(--surface), transparent 20%);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: transparent;
  cursor: pointer;
  transition: transform var(--dur-2) var(--ease-out),
    background var(--dur-2) var(--ease-out), border-color var(--dur-2) var(--ease-out),
    box-shadow var(--dur-2) var(--ease-out);
  user-select: none;
}

.btn:hover {
  transform: translateY(-1px);
}

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

.btn--primary {
  border-color: color-mix(in srgb, var(--primary), transparent 35%);
  background: linear-gradient(135deg, color-mix(in srgb, var(--primary), #000 0%) 0%, var(--primary-2) 70%);
  color: #07111f;
  box-shadow: 0 10px 25px color-mix(in srgb, var(--primary), transparent 78%);
}

html[data-theme="light"] .btn--primary {
  color: #ffffff;
}

.btn--ghost {
  background: color-mix(in srgb, var(--surface), transparent 25%);
}

.btn--sm {
  padding: 10px 12px;
  border-radius: 14px;
  font-size: 0.95rem;
}

.btn--block {
  width: 100%;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface), transparent 25%);
  cursor: pointer;
  transition: transform var(--dur-2) var(--ease-out), background var(--dur-2) var(--ease-out);
}
.icon-btn:hover {
  transform: translateY(-1px);
}
.icon-btn__icon {
  width: 20px;
  height: 20px;
  display: grid;
  place-items: center;
}
.icon-btn__label {
  font-size: 0.92rem;
  color: var(--muted);
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  z-index: 2000;
  background: transparent;
}
.scroll-progress__bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--primary), var(--primary-2), var(--accent));
  transform-origin: left;
}

.hero {
  position: relative;
  padding: clamp(5.5rem, 9vw, 7rem) 0 clamp(3.25rem, 6vw, 5rem);
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(900px 520px at 20% 25%, var(--grad-a), transparent 65%),
    radial-gradient(900px 520px at 80% 35%, var(--grad-b), transparent 65%),
    radial-gradient(900px 620px at 55% 85%, var(--grad-c), transparent 65%);
  filter: saturate(120%);
  animation: floatGrad 12s var(--ease-in-out) infinite alternate;
  z-index: -1;
}

@keyframes floatGrad {
  0% {
    transform: translate3d(0, 0, 0) scale(1);
  }
  100% {
    transform: translate3d(0, -16px, 0) scale(1.02);
  }
}

.hero__grid {
  display: grid;
  align-items: center;
  gap: clamp(1.75rem, 5vw, 3rem);
  grid-template-columns: 1.15fr 0.85fr;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface), transparent 25%);
  color: var(--muted);
  font-size: 0.95rem;
}
.badge__dot {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 999px;
  box-shadow: 0 0 0 6px color-mix(in srgb, var(--accent), transparent 85%);
}

.hero__title {
  margin: var(--space-5) 0 var(--space-4);
  font-size: var(--step-5);
  line-height: 1.06;
  letter-spacing: -0.04em;
}

.hero__title-accent {
  display: block;
  font-size: clamp(1.25rem, 2.7vw, 1.7rem);
  margin-top: var(--space-3);
  color: var(--muted);
  letter-spacing: -0.02em;
  font-weight: 600;
}

.hero__tagline {
  margin: 0 0 var(--space-5);
  font-size: var(--step-1);
  color: var(--muted);
  max-width: 58ch;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

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

.stat {
  padding: 14px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface), transparent 20%);
}
.stat__value {
  font-weight: 700;
  letter-spacing: -0.02em;
}
.stat__label {
  margin-top: 2px;
  font-size: 0.92rem;
  color: var(--muted);
}

.profile-card {
  position: relative;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface), transparent 15%);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transform: translateZ(0);
}

.profile-card__glow {
  position: absolute;
  inset: -40%;
  background: radial-gradient(circle at 30% 30%, var(--grad-a), transparent 45%),
    radial-gradient(circle at 70% 40%, var(--grad-b), transparent 45%),
    radial-gradient(circle at 55% 85%, var(--grad-c), transparent 55%);
  filter: blur(18px);
  opacity: 0.8;
  pointer-events: none;
}

.profile-card__img {
  aspect-ratio: 1 / 1;
  object-fit: cover;
  width: 100%;
}

.profile-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(0, 0, 0, 0.55));
  opacity: 0.7;
  pointer-events: none;
}
html[data-theme="light"] .profile-card__overlay {
  background: linear-gradient(180deg, transparent 55%, rgba(0, 0, 0, 0.5));
}

.profile-card__footer {
  position: absolute;
  left: var(--space-5);
  right: var(--space-5);
  bottom: var(--space-5);
  display: grid;
  gap: 2px;
}

.profile-card__name {
  font-weight: 700;
  letter-spacing: -0.02em;
}
.profile-card__role {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.95rem;
}

.glass {
  background: color-mix(in srgb, var(--surface), transparent 8%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.grid {
  display: grid;
  gap: var(--space-4);
}

.grid--skills {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.grid--arch {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.grid--projects {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  padding: var(--space-5);
  transition: transform var(--dur-2) var(--ease-out), box-shadow var(--dur-2) var(--ease-out),
    border-color var(--dur-2) var(--ease-out);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: color-mix(in srgb, var(--primary), transparent 55%);
}

.card__head {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.card__icon {
  width: 40px;
  height: 40px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface-2), transparent 20%);
  display: grid;
  place-items: center;
}

.i {
  width: 18px;
  height: 18px;
  display: block;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  box-shadow: 0 10px 20px color-mix(in srgb, var(--primary), transparent 78%);
}
.i--arch {
  background: linear-gradient(135deg, var(--primary-2), var(--accent));
}
.i--api {
  background: linear-gradient(135deg, var(--accent), var(--primary));
}
.i--tools {
  background: linear-gradient(135deg, var(--primary), var(--accent));
}
.i--mobile {
  background: linear-gradient(135deg, var(--primary), var(--primary-2), var(--accent));
}

.pill-list,
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.pill,
.tag {
  font-size: 0.92rem;
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface-2), transparent 20%);
  color: var(--muted);
}

.about-grid {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: 1fr 1fr;
  align-items: start;
}

.about-card {
  padding: var(--space-6);
}

.checklist {
  padding: 0;
  margin: var(--space-5) 0 0;
  list-style: none;
  display: grid;
  gap: 12px;
}
.checklist__icon {
  width: 18px;
  height: 18px;
  display: inline-block;
  margin-right: 10px;
  border-radius: 7px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  vertical-align: -3px;
}

.timeline {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-4);
}
.timeline__item {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: var(--space-4);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface-2), transparent 15%);
}
.timeline__when {
  font-weight: 600;
  letter-spacing: -0.01em;
}
.timeline__where {
  color: var(--muted);
  font-size: 0.92rem;
  margin-top: 4px;
}
.timeline__title {
  margin: 0;
  font-size: 1rem;
  letter-spacing: -0.01em;
}
.timeline__desc {
  margin: 6px 0 0;
  color: var(--muted);
}

.about-cta {
  margin-top: var(--space-5);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.project {
  overflow: hidden;
  padding: 0;
  transition: transform var(--dur-2) var(--ease-out), box-shadow var(--dur-2) var(--ease-out);
}
.project:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.project__media img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  filter: saturate(110%);
  transform: scale(1.01);
}

.project__body {
  padding: var(--space-5);
  display: grid;
  gap: var(--space-3);
}
.project__actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  padding-top: var(--space-2);
}

.contact-grid {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: 1.1fr 0.9fr;
  align-items: start;
}

.contact-card {
  padding: var(--space-6);
}

.form {
  margin-top: var(--space-4);
  display: grid;
  gap: var(--space-4);
}

.field {
  display: grid;
  gap: 8px;
}

.label {
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
}

.input {
  width: 100%;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface-2), transparent 15%);
  padding: 12px 12px;
  color: var(--text);
  transition: border-color var(--dur-2) var(--ease-out), box-shadow var(--dur-2) var(--ease-out),
    background var(--dur-2) var(--ease-out);
}
.input::placeholder {
  color: var(--muted-2);
}
.input:focus {
  outline: none;
  border-color: color-mix(in srgb, var(--primary), transparent 35%);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary), transparent 82%);
}

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

.field__error {
  min-height: 18px;
  font-size: 0.9rem;
  color: var(--danger);
}

.btn__spinner {
  width: 0;
  height: 0;
  border-radius: 999px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-left-color: currentColor;
  opacity: 0;
  transition: opacity var(--dur-2) var(--ease-out), width var(--dur-2) var(--ease-out),
    height var(--dur-2) var(--ease-out);
}

.btn.is-loading .btn__spinner {
  width: 16px;
  height: 16px;
  opacity: 0.9;
  animation: spin 900ms linear infinite;
}
.btn.is-loading .btn__text {
  opacity: 0.9;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.form__hint {
  font-size: 0.92rem;
  margin: 0;
}

.social {
  display: grid;
  gap: 12px;
  margin-top: var(--space-5);
}

.social__link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 12px 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface-2), transparent 15%);
  color: var(--muted);
  transition: transform var(--dur-2) var(--ease-out), border-color var(--dur-2) var(--ease-out);
}

.social__link:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--primary), transparent 55%);
  color: var(--text);
}

.social__icon {
  width: 18px;
  height: 18px;
  display: grid;
  place-items: center;
}

.contact-mini {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid var(--border);
}

.contact-mini__label {
  font-size: 0.85rem;
  color: var(--muted);
}
.contact-mini__value {
  font-weight: 600;
  letter-spacing: -0.01em;
}

.footer {
  border-top: 1px solid var(--border);
  padding: var(--space-6) 0;
  background: color-mix(in srgb, var(--bg), transparent 10%);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-5);
}
.footer__brand {
  font-weight: 700;
  letter-spacing: -0.02em;
}
.footer__right {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  justify-content: flex-end;
}
.footer__link {
  color: var(--muted);
  padding: 6px 8px;
  border-radius: 12px;
}
.footer__link:hover {
  color: var(--text);
  background: color-mix(in srgb, var(--surface-2), transparent 20%);
}

.back-to-top {
  position: fixed;
  right: 18px;
  bottom: 18px;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface), transparent 15%);
  box-shadow: var(--shadow-md);
  cursor: pointer;
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
  transition: opacity var(--dur-2) var(--ease-out), transform var(--dur-2) var(--ease-out);
  z-index: 1500;
}
.back-to-top.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%) translateY(18px);
  padding: 12px 14px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface), transparent 10%);
  box-shadow: var(--shadow-md);
  color: var(--text);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-2) var(--ease-out), transform var(--dur-2) var(--ease-out);
  z-index: 1600;
}
.toast.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.page-loader {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: color-mix(in srgb, var(--bg), transparent 0%);
  z-index: 3000;
  transition: opacity var(--dur-3) var(--ease-out), visibility var(--dur-3) var(--ease-out);
}
.page-loader.is-hidden {
  opacity: 0;
  visibility: hidden;
}
.page-loader__inner {
  display: grid;
  gap: 12px;
  justify-items: center;
}
.page-loader__mark {
  width: 44px;
  height: 44px;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: linear-gradient(135deg, var(--primary), var(--primary-2), var(--accent));
  box-shadow: 0 16px 45px color-mix(in srgb, var(--primary), transparent 78%);
  animation: loaderPulse 1.2s var(--ease-in-out) infinite;
}
@keyframes loaderPulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.06);
  }
}
.page-loader__text {
  color: var(--muted);
  font-size: 0.95rem;
}

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity var(--dur-3) var(--ease-out), transform var(--dur-3) var(--ease-out);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 980px) {
  .hero__grid {
    grid-template-columns: 1fr;
  }

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

  .grid--skills {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .grid--arch {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .grid--projects {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

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

@media (max-width: 720px) {
  .nav__toggle {
    display: inline-flex;
  }

  .nav__right {
    position: fixed;
    top: 64px;
    left: var(--space-4);
    right: var(--space-4);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    background: color-mix(in srgb, var(--bg), transparent 12%);
    box-shadow: var(--shadow-lg);
    padding: var(--space-4);
    display: grid;
    gap: var(--space-4);
    transform: translateY(-8px) scale(0.98);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--dur-2) var(--ease-out), transform var(--dur-2) var(--ease-out);
  }

  .nav__right.is-open {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
  }

  .nav__links {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .nav__actions {
    justify-content: space-between;
  }

  .icon-btn__label {
    display: none;
  }

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

  .footer__inner {
    flex-direction: column;
  }
  .footer__right {
    justify-content: flex-start;
  }
}

/* Hamburger animation when menu is open */
.nav__toggle.is-open .nav__toggle-lines span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.nav__toggle.is-open .nav__toggle-lines span:nth-child(2) {
  opacity: 0;
}
.nav__toggle.is-open .nav__toggle-lines span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Disabled placeholder links */
[aria-disabled="true"] {
  pointer-events: none;
  opacity: 0.7;
}