/* ============================================================
   V4 Design System — MD SAIFULLAH
   ============================================================ */

/* ── 1. Custom Properties ─────────────────────────────────── */
:root {
  /* Colors — Dark (default) */
  --bg:          #09090B;
  --surface-1:   #18181B;
  --surface-2:   #27272A;
  --surface-3:   #3F3F46;
  --accent:      #A78BFA;
  --accent-2:    #F472B6;
  --accent-dark: #7C3AED;
  --gradient:    linear-gradient(135deg, #A78BFA, #F472B6);
  --text:        #FAFAFA;
  --text-muted:  #A1A1AA;
  --text-subtle: #52525B;
  --border:      rgba(255,255,255,0.06);
  --border-hover:rgba(167,139,250,0.30);
  --glass-bg:    rgba(24,24,27,0.72);

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

  /* Radii */
  --r-sm:   0.375rem;
  --r-md:   0.75rem;
  --r-lg:   1rem;
  --r-xl:   1.5rem;
  --r-2xl:  2rem;
  --r-full: 9999px;

  /* Typography */
  --font-sans: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;

  /* Transitions */
  --t-fast:   150ms cubic-bezier(0.4,0,0.2,1);
  --t-base:   250ms cubic-bezier(0.4,0,0.2,1);
  --t-slow:   400ms cubic-bezier(0.4,0,0.2,1);
  --t-spring: 500ms cubic-bezier(0.34,1.56,0.64,1);

  /* Z-Index */
  --z-base:    1;
  --z-above:   10;
  --z-nav:     800;
  --z-modal:   900;
  --z-toast:   9990;
  --z-cursor:  9999;

  /* Focus Ring */
  --focus-ring: 0 0 0 3px rgba(167,139,250,0.5);

  /* Max widths */
  --max-w: 1100px;
  --max-w-text: 680px;
}

[data-theme="light"] {
  --bg:          #FAFAF9;
  --surface-1:   #FFFFFF;
  --surface-2:   #F4F4F5;
  --surface-3:   #E4E4E7;
  --accent:      #7C3AED;
  --accent-2:    #DB2777;
  --accent-dark: #5B21B6;
  --gradient:    linear-gradient(135deg, #7C3AED, #DB2777);
  --text:        #09090B;
  --text-muted:  #71717A;
  --text-subtle: #A1A1AA;
  --border:      rgba(0,0,0,0.07);
  --border-hover:rgba(124,58,237,0.30);
  --glass-bg:    rgba(250,250,249,0.82);
}

/* ── 2. Reset & Base ──────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color var(--t-slow), color var(--t-slow);
  cursor: none;
}

@media (pointer: coarse) {
  body { cursor: auto; }
  button, a, [role="button"], .gallery-item, .form-submit, .lang-toggle { cursor: pointer; }
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.15;
  text-wrap: balance;
}

p { text-wrap: pretty; }

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

img, video, svg {
  display: block;
  max-width: 100%;
}

ul { list-style: none; }

button {
  font-family: inherit;
  cursor: none;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: inherit;
}

:focus-visible {
  outline: var(--focus-ring);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}

/* ── 3. Utility Layer ─────────────────────────────────────── */
.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;
}

.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--sp-6);
}

.section {
  padding-block: var(--sp-20);
}

.section__header {
  margin-bottom: var(--sp-12);
}

.section__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--sp-3);
}

.section__eyebrow::before {
  content: '';
  width: 1.5rem;
  height: 2px;
  background: var(--gradient);
  border-radius: var(--r-full);
}

.section__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.section__title span {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section__desc {
  margin-top: var(--sp-4);
  font-size: 1.0625rem;
  color: var(--text-muted);
  max-width: var(--max-w-text);
}

/* ── 4. Global UI Elements ───────────────────────────────── */

/* Grain overlay */
.grain {
  position: fixed;
  inset: -50%;
  width: 200%;
  height: 200%;
  pointer-events: none;
  z-index: var(--z-cursor);
  opacity: 0.022;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 128px;
  animation: grain-drift 8s steps(10) infinite;
}

[data-theme="light"] .grain { opacity: 0.015; }

/* Scroll Progress */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--gradient);
  z-index: calc(var(--z-nav) + 1);
  transition: width 100ms linear;
}

/* Custom Cursor */
.cursor-dot {
  position: fixed;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: var(--r-full);
  pointer-events: none;
  z-index: var(--z-cursor);
  transform: translate(-50%, -50%);
  transition: opacity var(--t-fast), transform var(--t-fast);
}

.cursor-ring {
  position: fixed;
  width: 30px;
  height: 30px;
  border: 1.5px solid var(--accent);
  border-radius: var(--r-full);
  pointer-events: none;
  z-index: var(--z-cursor);
  transform: translate(-50%, -50%);
  transition: width var(--t-fast), height var(--t-fast), border-color var(--t-fast), opacity var(--t-fast);
  opacity: 0.6;
}

.cursor-ring.is-hover {
  width: 48px;
  height: 48px;
  border-color: var(--accent-2);
  opacity: 0.8;
}

.cursor-ring.is-clicking {
  transform: translate(-50%, -50%) scale(0.85);
}

@media (pointer: coarse) {
  .cursor-dot, .cursor-ring { display: none; }
}

/* Back to Top */
.back-to-top {
  position: fixed;
  bottom: var(--sp-8);
  right: var(--sp-8);
  width: 44px;
  height: 44px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  z-index: var(--z-nav);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity var(--t-base), visibility var(--t-base), transform var(--t-base), color var(--t-base), border-color var(--t-base);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  color: var(--accent);
  border-color: var(--border-hover);
}

.back-to-top:focus-visible {
  outline: var(--focus-ring);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 0.65rem 1.4rem;
  border-radius: var(--r-full);
  font-size: 0.9375rem;
  font-weight: 600;
  transition: all var(--t-base);
  white-space: nowrap;
}

.btn:focus-visible {
  outline: var(--focus-ring);
}

.btn--primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 4px 20px rgba(167,139,250,0.30);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(167,139,250,0.45);
}

.btn--outline {
  background: transparent;
  border: 1.5px solid var(--border-hover);
  color: var(--accent);
}

.btn--outline:hover {
  background: rgba(167,139,250,0.08);
  transform: translateY(-2px);
}

.btn--ghost {
  background: var(--surface-2);
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.btn--ghost:hover {
  color: var(--text);
  background: var(--surface-3);
  transform: translateY(-2px);
}

/* Preloader */
.preloader {
  position: fixed;
  inset: 0;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: calc(var(--z-modal) + 10);
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.preloader.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.preloader__inner {
  text-align: center;
}

.preloader__logo {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--sp-6);
}

.preloader__bar {
  width: 160px;
  height: 3px;
  background: var(--surface-2);
  border-radius: var(--r-full);
  overflow: hidden;
}

.preloader__progress {
  width: 0%;
  height: 100%;
  background: var(--gradient);
  border-radius: var(--r-full);
  animation: preloader-fill 1.2s ease forwards;
}

/* ── 5. Navigation ───────────────────────────────────────── */
.site-header {
  position: fixed;
  top: var(--sp-5);
  left: 50%;
  transform: translateX(-50%);
  width: min(700px, calc(100vw - var(--sp-8)));
  z-index: var(--z-nav);
  transition: top var(--t-base);
}

.pill-nav {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  padding: 0.55rem 0.55rem 0.55rem var(--sp-6);
  background: var(--glass-bg);
  border: 1px solid var(--border);
  border-radius: var(--r-full);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  transition: background var(--t-base), border-color var(--t-base), box-shadow var(--t-base);
}

.site-header.scrolled .pill-nav {
  background: rgba(9,9,11,0.88);
  border-color: rgba(167,139,250,0.15);
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}

[data-theme="light"] .site-header.scrolled .pill-nav {
  background: rgba(250,250,249,0.92);
  box-shadow: 0 8px 32px rgba(0,0,0,0.12);
}

.pill-nav__logo {
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text);
  flex-shrink: 0;
  margin-right: var(--sp-2);
}

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

.pill-nav__links {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  flex: 1;
  justify-content: center;
}

.nav-link {
  position: relative;
  padding: 0.375rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: var(--r-full);
  transition: color var(--t-fast), background var(--t-fast);
}

.nav-link:hover {
  color: var(--text);
  background: var(--surface-2);
}

.nav-link.active {
  color: var(--text);
  background: var(--surface-2);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 3px;
  background: var(--gradient);
  border-radius: var(--r-full);
}

.nav-link:focus-visible {
  outline: var(--focus-ring);
}

.pill-nav__actions {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  flex-shrink: 0;
}

.theme-toggle {
  width: 36px;
  height: 36px;
  border-radius: var(--r-full);
  background: var(--surface-2);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: color var(--t-fast), background var(--t-fast);
}

.theme-toggle:hover { color: var(--accent); }
.theme-toggle:focus-visible { outline: var(--focus-ring); }

.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }
[data-theme="light"] .theme-toggle .icon-sun { display: block; }
[data-theme="light"] .theme-toggle .icon-moon { display: none; }

.nav-hamburger {
  display: none;
  width: 36px;
  height: 36px;
  border-radius: var(--r-full);
  background: var(--surface-2);
  border: 1px solid var(--border);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.nav-hamburger span {
  display: block;
  width: 16px;
  height: 1.5px;
  background: var(--text-muted);
  border-radius: var(--r-full);
  transition: transform var(--t-base), opacity var(--t-base), width var(--t-base);
  transform-origin: center;
}

.nav-hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: rotate(45deg) translate(4.5px, 4.5px);
}
.nav-hamburger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
  width: 0;
}
.nav-hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: rotate(-45deg) translate(4.5px, -4.5px);
}

.nav-hamburger:focus-visible { outline: var(--focus-ring); }

/* Mobile Menu */
.nav-mobile-menu {
  margin-top: var(--sp-2);
  background: var(--glass-bg);
  border: 1px solid var(--border);
  border-radius: var(--r-2xl);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transition: max-height var(--t-slow), opacity var(--t-base), padding var(--t-base);
  display: none;
}

.nav-mobile-menu.is-open {
  max-height: 400px;
  opacity: 1;
  padding: var(--sp-4);
}

.nav-mobile-menu ul {
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
}

.nav-mobile-menu .nav-link {
  display: block;
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--r-lg);
  font-size: 1rem;
}

.nav-mobile-menu .nav-link.active::after {
  display: none;
}

/* ── 6. Hero ─────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-top: 120px;
  padding-bottom: var(--sp-16);
  overflow: hidden;
}

.mesh-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.mesh-blob {
  position: absolute;
  border-radius: var(--r-full);
  filter: blur(80px);
  mix-blend-mode: screen;
  opacity: 0.12;
}

[data-theme="light"] .mesh-blob { opacity: 0.08; mix-blend-mode: multiply; }

.mesh-blob--1 {
  width: 600px;
  height: 600px;
  background: #7C3AED;
  top: -200px;
  left: -100px;
  animation: blob-float 12s ease-in-out infinite;
}

.mesh-blob--2 {
  width: 500px;
  height: 500px;
  background: #F472B6;
  top: 100px;
  right: -80px;
  animation: blob-float 15s ease-in-out infinite reverse;
}

.mesh-blob--3 {
  width: 400px;
  height: 400px;
  background: #06B6D4;
  bottom: -100px;
  left: 30%;
  animation: blob-float 10s ease-in-out 2s infinite;
}

.mesh-blob--4 {
  width: 350px;
  height: 350px;
  background: #A78BFA;
  bottom: 100px;
  right: 20%;
  animation: blob-float 13s ease-in-out 4s infinite reverse;
}

.hero__inner {
  position: relative;
  z-index: 1;
  width: 100%;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--sp-12);
  align-items: center;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-4);
  background: rgba(167,139,250,0.1);
  border: 1px solid rgba(167,139,250,0.2);
  border-radius: var(--r-full);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--sp-5);
}

.hero__eyebrow-dot {
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: var(--r-full);
  animation: pulse-dot 2s ease-in-out infinite;
}

.hero__name {
  font-size: clamp(3rem, 8vw, 6.5rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: var(--sp-5);
}

.hero__name-line2 {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__typed-wrap {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: clamp(1rem, 2.5vw, 1.375rem);
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: var(--sp-6);
  min-height: 2rem;
}

.hero__typed-prefix {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 1.1em;
}

.typed-cursor {
  display: inline-block;
  width: 2px;
  height: 1.2em;
  background: var(--accent);
  border-radius: 1px;
  vertical-align: middle;
  animation: blink 1s step-end infinite;
}

.hero__bio {
  font-size: 1.0625rem;
  color: var(--text-muted);
  max-width: 520px;
  line-height: 1.75;
  margin-bottom: var(--sp-8);
}

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

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
}

/* Avatar Column */
.hero__visual {
  position: relative;
  flex-shrink: 0;
}

.avatar-ring-wrap {
  position: relative;
  width: 280px;
  height: 280px;
}

.avatar-ring {
  position: absolute;
  inset: -10px;
  border-radius: var(--r-full);
  padding: 3px;
  background: var(--gradient);
  animation: ring-spin 6s linear infinite;
}

.avatar-ring::before {
  content: '';
  position: absolute;
  inset: 3px;
  border-radius: var(--r-full);
  background: var(--bg);
}

.avatar-ring-dashes {
  position: absolute;
  inset: -20px;
  border-radius: var(--r-full);
  border: 2px dashed rgba(167,139,250,0.20);
  animation: ring-spin 20s linear infinite reverse;
}

.avatar-img {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: var(--r-full);
  object-fit: cover;
  z-index: 1;
  border: 3px solid var(--bg);
}

/* Floating stat badges */
.stat-badge {
  position: absolute;
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-4);
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
  white-space: nowrap;
  z-index: 2;
  animation: badge-float 4s ease-in-out infinite;
}

[data-theme="light"] .stat-badge {
  box-shadow: 0 8px 24px rgba(0,0,0,0.1);
}

.stat-badge--1 { top: -10px; right: -40px; animation-delay: 0s; }
.stat-badge--2 { bottom: 20px; right: -50px; animation-delay: 1.5s; }
.stat-badge--3 { bottom: -10px; left: -30px; animation-delay: 0.8s; }

.stat-badge__icon {
  width: 28px;
  height: 28px;
  border-radius: var(--r-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
}

.stat-badge__icon--violet { background: rgba(167,139,250,0.15); }
.stat-badge__icon--pink   { background: rgba(244,114,182,0.15); }
.stat-badge__icon--cyan   { background: rgba(6,182,212,0.15); }

.stat-badge__value {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1;
}

.stat-badge__label {
  font-size: 0.6875rem;
  color: var(--text-muted);
}

/* ── 7. Stats Row ────────────────────────────────────────── */
.stats-band {
  padding-block: var(--sp-16);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stats-band__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-6);
}

.stat-item {
  text-align: center;
  padding: var(--sp-6);
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  transition: border-color var(--t-base), transform var(--t-base);
}

.stat-item:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
}

.stat-item__number {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: var(--sp-2);
}

.stat-item__label {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* ── 8. Bento "What I Do" Grid ───────────────────────────── */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-5);
}

.bento-card {
  padding: var(--sp-8);
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--r-2xl);
  transition: border-color var(--t-base), transform var(--t-base), box-shadow var(--t-base);
  position: relative;
  overflow: hidden;
}

.bento-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient);
  opacity: 0;
  transition: opacity var(--t-base);
  z-index: 0;
}

.bento-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.25), 0 0 0 1px var(--border-hover);
}

.bento-card:hover::before { opacity: 0.035; }

.bento-card > * { position: relative; z-index: 1; }

.bento-card__icon {
  width: 52px;
  height: 52px;
  border-radius: var(--r-lg);
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  margin-bottom: var(--sp-5);
  box-shadow: 0 6px 20px rgba(167,139,250,0.3);
}

.bento-card__title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--sp-3);
}

.bento-card__desc {
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.bento-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-top: var(--sp-5);
}

.bento-tag {
  padding: 0.2rem 0.625rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-full);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
}

/* ── 9. About Cards Row ──────────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-8);
  align-items: start;
}

.about-text h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  margin-bottom: var(--sp-5);
  letter-spacing: -0.03em;
}

.about-text p {
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: var(--sp-4);
}

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

.about-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}

.info-card {
  padding: var(--sp-5);
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  display: flex;
  gap: var(--sp-4);
  align-items: flex-start;
  transition: border-color var(--t-base);
}

.info-card:hover { border-color: var(--border-hover); }

.info-card__icon {
  width: 40px;
  height: 40px;
  border-radius: var(--r-md);
  background: rgba(167,139,250,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}

.info-card__label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: var(--sp-1);
}

.info-card__value {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text);
}

/* ── 10. Resume Page ─────────────────────────────────────── */
.resume-page {
  padding-top: 120px;
}

.resume-download-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--sp-4);
  padding: var(--sp-5) var(--sp-6);
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--r-2xl);
  margin-bottom: var(--sp-10);
}

.resume-download-bar p {
  color: var(--text-muted);
  font-size: 0.9375rem;
}

/* Tab Bar */
.tab-bar {
  display: flex;
  gap: var(--sp-2);
  margin-bottom: var(--sp-10);
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--r-full);
  padding: var(--sp-2);
  width: fit-content;
}

.tab-btn {
  padding: 0.5rem 1.25rem;
  border-radius: var(--r-full);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: color var(--t-fast), background var(--t-fast);
}

.tab-btn.active {
  background: var(--gradient);
  color: #fff;
}

.tab-btn:not(.active):hover {
  color: var(--text);
  background: var(--surface-2);
}

.tab-btn:focus-visible { outline: var(--focus-ring); }

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* Timeline */
.timeline {
  position: relative;
  padding-left: var(--sp-8);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 0;
  width: 2px;
  background: var(--border);
  border-radius: var(--r-full);
}

.timeline__item {
  position: relative;
  margin-bottom: var(--sp-10);
}

.timeline__item:last-child { margin-bottom: 0; }

.timeline__item::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--sp-8) - 5px);
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: var(--r-full);
  background: var(--gradient);
  box-shadow: 0 0 0 3px var(--bg), 0 0 12px rgba(167,139,250,0.5);
  animation: dot-pulse 3s ease-in-out infinite;
}

.timeline__date {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: var(--sp-1);
  font-family: var(--font-mono);
}

.timeline__org {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: var(--sp-2);
}

.timeline__title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--sp-1);
}

.timeline__subtitle {
  display: inline-block;
  padding: 0.2rem 0.625rem;
  background: rgba(167,139,250,0.1);
  border: 1px solid rgba(167,139,250,0.2);
  border-radius: var(--r-full);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: var(--sp-3);
}

.timeline__desc {
  color: var(--text-muted);
  font-size: 0.9375rem;
  line-height: 1.75;
}

/* Skills Section */
.skill-groups {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-8);
}

.skill-group {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--r-2xl);
  padding: var(--sp-6);
}

.skill-group__title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: var(--sp-5);
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.skill-group__title::before {
  content: '';
  width: 4px;
  height: 1rem;
  background: var(--gradient);
  border-radius: var(--r-full);
}

.skill-bar {
  margin-bottom: var(--sp-4);
}

.skill-bar:last-of-type { margin-bottom: 0; }

.skill-bar__label {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--sp-2);
}

.skill-bar__name {
  font-size: 0.875rem;
  font-weight: 500;
}

.skill-bar__pct {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent);
  font-family: var(--font-mono);
}

.skill-bar__track {
  height: 6px;
  background: var(--surface-2);
  border-radius: var(--r-full);
  overflow: hidden;
}

.skill-bar__fill {
  height: 100%;
  width: 0%;
  background: var(--gradient);
  border-radius: var(--r-full);
  transition: width 1.2s cubic-bezier(0.4,0,0.2,1);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-top: var(--sp-4);
}

.skill-tag {
  padding: 0.25rem 0.75rem;
  border-radius: var(--r-full);
  font-size: 0.8125rem;
  font-weight: 500;
  transition: all var(--t-fast);
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.skill-tag--strong {
  background: var(--gradient);
  color: #fff;
  border-color: transparent;
}

.skill-tag--soft {
  background: transparent;
  border: 1px solid var(--border-hover);
  color: var(--accent);
}

/* ── 11. Portfolio Page ──────────────────────────────────── */
.portfolio-page {
  padding-top: 120px;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-bottom: var(--sp-10);
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--r-full);
  padding: var(--sp-2);
  width: fit-content;
}

.filter-btn {
  padding: 0.45rem 1.1rem;
  border-radius: var(--r-full);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: color var(--t-fast), background var(--t-fast);
}

.filter-btn.active {
  background: var(--gradient);
  color: #fff;
}

.filter-btn:not(.active):hover {
  color: var(--text);
  background: var(--surface-2);
}

.filter-btn:focus-visible { outline: var(--focus-ring); }

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-6);
}

.portfolio-card {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--r-2xl);
  overflow: hidden;
  transition: border-color var(--t-base), transform var(--t-base), box-shadow var(--t-base);
  display: flex;
  flex-direction: column;
}

.portfolio-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-5px);
  box-shadow: 0 20px 48px rgba(0,0,0,0.3);
}

.portfolio-card__thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
}

.portfolio-card__bg {
  width: 100%;
  height: 100%;
  transition: transform var(--t-slow);
}

.portfolio-card:hover .portfolio-card__bg {
  transform: scale(1.06);
}

.portfolio-card__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(3px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--t-base);
}

.portfolio-card:hover .portfolio-card__overlay { opacity: 1; }

.portfolio-card__overlay-btn {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 0.65rem 1.4rem;
  background: var(--gradient);
  color: #fff;
  border-radius: var(--r-full);
  font-size: 0.9rem;
  font-weight: 600;
  transform: translateY(10px);
  transition: transform var(--t-base);
}

.portfolio-card:hover .portfolio-card__overlay-btn {
  transform: translateY(0);
}

.portfolio-card__body {
  padding: var(--sp-5);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.portfolio-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-bottom: var(--sp-3);
}

.portfolio-card__tag {
  padding: 0.15rem 0.5rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-full);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
}

.portfolio-card__title {
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: var(--sp-2);
}

.portfolio-card__desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.65;
  flex: 1;
  margin-bottom: var(--sp-4);
}

.portfolio-card__stack {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-bottom: var(--sp-4);
}

.portfolio-card__stack-item {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  font-family: var(--font-mono);
}

.portfolio-card__stack-item + .portfolio-card__stack-item::before {
  content: ' · ';
  color: var(--text-subtle);
}

.portfolio-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent);
  margin-top: auto;
  transition: gap var(--t-fast);
}

.portfolio-card__link:hover { gap: var(--sp-2); }
.portfolio-card__link:focus-visible { outline: var(--focus-ring); }

.portfolio-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--sp-20);
  color: var(--text-muted);
  display: none;
}

.portfolio-empty.is-visible { display: block; }

.portfolio-empty__icon {
  font-size: 3rem;
  margin-bottom: var(--sp-4);
}

/* ── 12. Gallery Page ────────────────────────────────────── */
.gallery-page {
  padding-top: 120px;
}

.gallery-masonry {
  columns: 3;
  column-gap: var(--sp-5);
}

.gallery-item {
  break-inside: avoid;
  margin-bottom: var(--sp-5);
  border-radius: var(--r-xl);
  overflow: hidden;
  cursor: none;
  position: relative;
  border: 1px solid var(--border);
  transition: border-color var(--t-base), transform var(--t-base);
}

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

.gallery-item:focus-visible {
  outline: var(--focus-ring);
  border-radius: var(--r-xl);
}

.gallery-item__placeholder {
  width: 100%;
  display: block;
}

.gallery-item__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(2px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--t-base);
}

.gallery-item:hover .gallery-item__overlay { opacity: 1; }

.gallery-item__zoom {
  width: 44px;
  height: 44px;
  background: rgba(255,255,255,0.15);
  border: 1.5px solid rgba(255,255,255,0.3);
  border-radius: var(--r-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}

.gallery-item__caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--sp-4);
  background: linear-gradient(transparent, rgba(0,0,0,0.7));
  color: #fff;
  font-size: 0.875rem;
  font-weight: 500;
  transform: translateY(4px);
  opacity: 0;
  transition: transform var(--t-base), opacity var(--t-base);
}

.gallery-item:hover .gallery-item__caption {
  transform: translateY(0);
  opacity: 1;
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.95);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--t-base), visibility var(--t-base);
}

.lightbox.is-open {
  opacity: 1;
  visibility: visible;
}

.lightbox__inner {
  position: relative;
  max-width: min(90vw, 1000px);
  max-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox__content {
  border-radius: var(--r-xl);
  overflow: hidden;
  max-height: 85vh;
  max-width: 100%;
}

.lightbox__caption {
  position: absolute;
  bottom: -3rem;
  left: 0;
  right: 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9375rem;
}

.lightbox__btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--r-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: color var(--t-fast), background var(--t-fast), border-color var(--t-fast);
}

.lightbox__btn:hover {
  color: var(--text);
  background: var(--surface-2);
  border-color: var(--border-hover);
}

.lightbox__btn:focus-visible { outline: var(--focus-ring); }

.lightbox__btn--prev { left: -60px; }
.lightbox__btn--next { right: -60px; }

.lightbox__close {
  position: fixed;
  top: var(--sp-5);
  right: var(--sp-5);
  width: 44px;
  height: 44px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: color var(--t-fast), border-color var(--t-fast);
}

.lightbox__close:hover { color: var(--accent-2); border-color: var(--accent-2); }
.lightbox__close:focus-visible { outline: var(--focus-ring); }

.lightbox__counter {
  position: fixed;
  bottom: var(--sp-6);
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.875rem;
  color: var(--text-muted);
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--r-full);
  padding: var(--sp-2) var(--sp-4);
}

/* ── 13. Contact Page ────────────────────────────────────── */
.contact-page {
  padding-top: 120px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--sp-10);
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}

.contact-info-card {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  padding: var(--sp-5);
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  transition: border-color var(--t-base), transform var(--t-base);
}

.contact-info-card:hover {
  border-color: var(--border-hover);
  transform: translateX(4px);
}

.contact-info-card__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--r-md);
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  flex-shrink: 0;
}

.contact-info-card__label {
  font-size: 0.75rem;
  color: var(--text-subtle);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: var(--sp-1);
}

.contact-info-card__value {
  font-size: 0.9375rem;
  font-weight: 600;
}

.copy-btn {
  margin-left: auto;
  width: 32px;
  height: 32px;
  border-radius: var(--r-md);
  background: var(--surface-2);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  flex-shrink: 0;
  transition: color var(--t-fast), border-color var(--t-fast);
}

.copy-btn:hover { color: var(--accent); border-color: var(--border-hover); }
.copy-btn:focus-visible { outline: var(--focus-ring); }

.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  margin-top: var(--sp-2);
}

.social-link {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-4);
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--r-full);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--t-fast), border-color var(--t-fast), transform var(--t-fast);
}

.social-link:hover {
  color: var(--accent);
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.social-link:focus-visible { outline: var(--focus-ring); }

/* Contact Form */
.contact-form-wrap {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--r-2xl);
  padding: var(--sp-8);
}

.contact-form-wrap h2 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: var(--sp-6);
  letter-spacing: -0.03em;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-5);
}

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

.form-group:last-of-type { margin-bottom: 0; }

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--sp-2);
  color: var(--text);
}

.form-input, .form-textarea {
  width: 100%;
  padding: 0.75rem var(--sp-4);
  background: var(--surface-2);
  border: 1.5px solid var(--border);
  border-radius: var(--r-lg);
  color: var(--text);
  font-size: 0.9375rem;
  transition: border-color var(--t-fast), box-shadow var(--t-fast), background var(--t-fast);
}

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

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(167,139,250,0.15);
  background: var(--surface-1);
}

.form-textarea {
  resize: vertical;
  min-height: 140px;
}

.form-group--textarea {
  position: relative;
}

.char-counter {
  position: absolute;
  bottom: var(--sp-3);
  right: var(--sp-4);
  font-size: 0.75rem;
  color: var(--text-subtle);
  font-family: var(--font-mono);
  pointer-events: none;
}

.char-counter.is-near { color: #F59E0B; }
.char-counter.is-max  { color: #EF4444; }

.form-error {
  display: none;
  font-size: 0.8125rem;
  color: #EF4444;
  margin-top: var(--sp-1);
}

.form-group.has-error .form-error { display: block; }
.form-group.has-error .form-input,
.form-group.has-error .form-textarea {
  border-color: #EF4444;
  box-shadow: 0 0 0 3px rgba(239,68,68,0.15);
}

.form-submit {
  width: 100%;
  padding: 0.85rem;
  font-size: 1rem;
  font-weight: 700;
  background: var(--gradient);
  color: #fff;
  border-radius: var(--r-lg);
  border: none;
  transition: transform var(--t-base), box-shadow var(--t-base), opacity var(--t-base);
  box-shadow: 0 4px 20px rgba(167,139,250,0.3);
  margin-top: var(--sp-6);
  cursor: none;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
}

.form-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(167,139,250,0.45);
}

.form-submit:focus-visible { outline: var(--focus-ring); }

.form-submit:disabled {
  opacity: 0.7;
  pointer-events: none;
}

/* Toast */
.toast {
  position: fixed;
  bottom: var(--sp-8);
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  padding: var(--sp-4) var(--sp-6);
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  font-size: 0.9375rem;
  font-weight: 500;
  z-index: var(--z-toast);
  box-shadow: 0 20px 48px rgba(0,0,0,0.4);
  opacity: 0;
  visibility: hidden;
  transition: transform var(--t-spring), opacity var(--t-base), visibility var(--t-base);
  white-space: nowrap;
}

.toast.is-visible {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
  visibility: visible;
}

.toast__icon {
  width: 28px;
  height: 28px;
  border-radius: var(--r-full);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.toast--success .toast__icon { background: rgba(34,197,94,0.15); color: #22C55E; }
.toast--error   .toast__icon { background: rgba(239,68,68,0.15);  color: #EF4444; }

/* ── 14. Footer ──────────────────────────────────────────── */
.site-footer {
  padding-block: var(--sp-12);
  border-top: 1px solid var(--border);
  margin-top: var(--sp-16);
}

.site-footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-4);
  text-align: center;
}

.footer__logo {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-5);
  justify-content: center;
}

.footer__link {
  font-size: 0.875rem;
  color: var(--text-muted);
  transition: color var(--t-fast);
}

.footer__link:hover { color: var(--accent); }
.footer__link:focus-visible { outline: var(--focus-ring); }

.footer__copy {
  font-size: 0.8125rem;
  color: var(--text-subtle);
}

/* ── 15. Scroll Reveal ───────────────────────────────────── */
[data-animate] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--t-slow), transform var(--t-slow);
}

[data-animate].revealed {
  opacity: 1;
  transform: translateY(0);
}

[data-animate][data-delay="1"] { transition-delay: 100ms; }
[data-animate][data-delay="2"] { transition-delay: 200ms; }
[data-animate][data-delay="3"] { transition-delay: 300ms; }
[data-animate][data-delay="4"] { transition-delay: 400ms; }

/* ── 16. Responsive ──────────────────────────────────────── */
@media (max-width: 1024px) {
  .hero__grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero__bio { max-width: 100%; }
  .hero__cta { justify-content: center; }

  .hero__visual {
    display: flex;
    justify-content: center;
    order: -1;
  }

  .avatar-ring-wrap { width: 220px; height: 220px; }
  .stat-badge--1 { top: -10px; right: -10px; }
  .stat-badge--2 { bottom: 10px; right: -20px; }
  .stat-badge--3 { bottom: -10px; left: -10px; }

  .stats-band__grid { grid-template-columns: repeat(2, 1fr); }
  .bento-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .skill-groups { grid-template-columns: 1fr; }
  .portfolio-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .gallery-masonry { columns: 2; }
}

@media (max-width: 768px) {
  :root { --sp-20: 3rem; --sp-16: 2.5rem; }

  .pill-nav__links { display: none; }
  .nav-hamburger { display: flex; }
  .nav-mobile-menu { display: block; }
  .site-header { top: var(--sp-3); }

  .hero { padding-top: 100px; }
  .resume-page,
  .portfolio-page,
  .gallery-page,
  .contact-page { padding-top: 100px; }

  .tab-bar { width: 100%; border-radius: var(--r-2xl); justify-content: stretch; }
  .tab-btn { flex: 1; text-align: center; border-radius: var(--r-lg); }

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

  .lightbox__btn--prev { left: var(--sp-3); }
  .lightbox__btn--next { right: var(--sp-3); }

  .portfolio-grid { grid-template-columns: 1fr; }
  .stats-band__grid { grid-template-columns: repeat(2, 1fr); }

  .resume-download-bar { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 640px) {
  .container { padding-inline: var(--sp-4); }
  .gallery-masonry { columns: 1; }
  .stats-band__grid { grid-template-columns: repeat(2, 1fr); }
  .stat-badge--3 { display: none; }
  .back-to-top { bottom: var(--sp-5); right: var(--sp-4); }
  .skill-groups { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .hero__name { font-size: clamp(2.5rem, 12vw, 4rem); }
  .filter-bar { border-radius: var(--r-2xl); }
  .filter-btn { padding: 0.4rem 0.875rem; font-size: 0.8125rem; }
  .contact-form-wrap { padding: var(--sp-5); }
}

/* ── 17. Gradient Placeholders ───────────────────────────── */
.grad-placeholder {
  width: 100%;
  display: block;
}

.gp--1 { background: linear-gradient(135deg, #667eea, #764ba2); }
.gp--2 { background: linear-gradient(135deg, #f093fb, #f5576c); }
.gp--3 { background: linear-gradient(135deg, #4facfe, #00f2fe); }
.gp--4 { background: linear-gradient(135deg, #43e97b, #38f9d7); }
.gp--5 { background: linear-gradient(135deg, #fa709a, #fee140); }
.gp--6 { background: linear-gradient(135deg, #a18cd1, #fbc2eb); }
.gp--7 { background: linear-gradient(135deg, #ffecd2, #fcb69f); }
.gp--8 { background: linear-gradient(135deg, #a1c4fd, #c2e9fb); }

/* ================================================================
   Language Toggle
================================================================ */
.lang-toggle {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 0.3rem 0.6rem;
  border-radius: var(--r-full);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  background: var(--surface-1);
  border: 1px solid var(--border);
  cursor: none;
  transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast);
  font-family: var(--font-mono);
  white-space: nowrap;
}
.lang-toggle:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-dim);
}
.lang-toggle:focus-visible {
  outline: var(--focus-ring);
}
.lang-toggle__current {
  color: var(--text);
}
.lang-toggle__sep {
  color: var(--border);
  font-weight: 400;
}
.lang-toggle__other {
  color: var(--text-muted);
}
.lang-toggle--mobile {
  width: 100%;
  justify-content: center;
  padding: var(--sp-3);
  font-size: var(--text-sm);
  border-radius: var(--r-lg);
}
[data-lang="en"] .lang-toggle .lang-toggle__current { color: var(--text); }
[data-lang="it"] .lang-toggle .lang-toggle__other   { color: var(--text); }
[data-lang="it"] .lang-toggle .lang-toggle__current { color: var(--text-muted); }