/* ==========================================================================
   dev.drozd — personal site
   Design system: tokens → base → layout → components → utilities
   No frameworks. No dependencies.
   ========================================================================== */

/* ---------- 1. Tokens --------------------------------------------------- */

:root {
  /* Typography */
  --font-sans: "Inter", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;

  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-md: 1.0625rem;
  --fs-lg: 1.25rem;
  --fs-xl: 1.5rem;
  --fs-2xl: clamp(1.75rem, 3.2vw, 2.25rem);
  --fs-3xl: clamp(2.25rem, 5.2vw, 3.5rem);
  --fs-hero: clamp(2.6rem, 8vw, 5.75rem);

  /* Spacing */
  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.5rem;
  --sp-6: 2rem;
  --sp-7: 3rem;
  --sp-8: 4rem;
  --sp-9: 6rem;
  --sp-10: 8rem;

  /* Layout */
  --maxw: 1336px;
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --radius-full: 999px;

  /* Motion */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --t-fast: 0.18s;
  --t-mid: 0.35s;
  --t-slow: 0.7s;

  /* Accent (theme-independent) */
  --accent: #4f7cff;
  --accent-2: #1fd1e8;
  --accent-3: #a259ff;
  --accent-soft: rgba(79, 124, 255, 0.14);

  --nav-h: 74px;
}

/* Dark theme (default) */
:root,
[data-theme="dark"] {
  color-scheme: dark;
  --bg: #06080f;
  --bg-alt: #0a0e18;
  --bg-deep: #04060c;
  --surface: rgba(255, 255, 255, 0.032);
  --surface-2: rgba(255, 255, 255, 0.055);
  --surface-solid: #0e1320;
  --border: rgba(255, 255, 255, 0.085);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #e9eefb;
  --text-soft: #b9c3d8;
  --text-muted: #7c879f;
  --shadow: 0 24px 60px -20px rgba(0, 0, 0, 0.75);
  --shadow-sm: 0 8px 24px -12px rgba(0, 0, 0, 0.6);
  --grid-line: rgba(255, 255, 255, 0.035);
  --glow: 0 0 0 1px rgba(79, 124, 255, 0.35), 0 12px 40px -8px rgba(79, 124, 255, 0.45);
  --orb-opacity: 0.55;
  --particle: 150, 175, 220;
  --code-bg: rgba(255, 255, 255, 0.045);
}

[data-theme="light"] {
  color-scheme: light;
  --bg: #f4f6fb;
  --bg-alt: #ffffff;
  --bg-deep: #eaeef7;
  --surface: rgba(12, 20, 40, 0.024);
  --surface-2: rgba(12, 20, 40, 0.05);
  --surface-solid: #ffffff;
  --border: rgba(12, 20, 40, 0.1);
  --border-strong: rgba(12, 20, 40, 0.2);
  --text: #0b1120;
  --text-soft: #2f3b52;
  --text-muted: #5d6a80;
  --shadow: 0 24px 60px -24px rgba(15, 23, 42, 0.22);
  --shadow-sm: 0 10px 26px -14px rgba(15, 23, 42, 0.2);
  --grid-line: rgba(12, 20, 40, 0.045);
  --glow: 0 0 0 1px rgba(37, 99, 235, 0.22), 0 14px 36px -12px rgba(37, 99, 235, 0.3);
  --orb-opacity: 0.32;
  --particle: 40, 60, 110;
  --code-bg: rgba(12, 20, 40, 0.045);
  --accent: #2f6bff;
  --accent-2: #06a5c4;
  --accent-3: #7c3aed;
  --accent-soft: rgba(47, 107, 255, 0.1);
}

/* ---------- 2. Reset & base --------------------------------------------- */

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

* {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 20px);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--fs-md);
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  max-width: 100vw;
  transition: background-color var(--t-mid) var(--ease-out), color var(--t-mid) var(--ease-out);
}

html {
  overflow-x: hidden;
  max-width: 100vw;
}

body.is-locked {
  overflow: hidden;
}

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

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

button {
  background: none;
  border: 0;
  cursor: pointer;
}

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

ul {
  list-style: none;
}

::selection {
  background: var(--accent);
  color: #fff;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-deep);
}
::-webkit-scrollbar-thumb {
  background: linear-gradient(var(--accent), var(--accent-3));
  border-radius: var(--radius-full);
  border: 2px solid var(--bg-deep);
}

/* ---------- 3. Background layers ---------------------------------------- */

.bg-layers {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  contain: strict;
}

.bg-grid {
  position: absolute;
  inset: -2px;
  background-image: linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 62px 62px;
  mask-image: radial-gradient(ellipse 90% 65% at 50% 0%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 90% 65% at 50% 0%, #000 20%, transparent 78%);
  opacity: 0.9;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: var(--orb-opacity);
  transition: opacity var(--t-slow) var(--ease-out);
  will-change: transform;
  contain: layout style paint;
}

.orb--1 {
  width: 44vw;
  height: 44vw;
  min-width: 340px;
  min-height: 340px;
  top: -12vw;
  left: -8vw;
  background: radial-gradient(circle at 30% 30%, var(--accent), transparent 68%);
  animation: orb-float-a 22s var(--ease-in-out) infinite;
}

.orb--2 {
  width: 38vw;
  height: 38vw;
  min-width: 300px;
  min-height: 300px;
  top: 8vh;
  right: -10vw;
  background: radial-gradient(circle at 60% 40%, var(--accent-3), transparent 68%);
  animation: orb-float-b 26s var(--ease-in-out) infinite;
}

.orb--3 {
  width: 34vw;
  height: 34vw;
  min-width: 260px;
  min-height: 260px;
  bottom: -10vw;
  left: 30vw;
  background: radial-gradient(circle at 50% 50%, var(--accent-2), transparent 70%);
  animation: orb-float-a 30s var(--ease-in-out) infinite reverse;
}

@keyframes orb-float-a {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
  33% { transform: translate3d(6vw, 5vh, 0) scale(1.12); }
  66% { transform: translate3d(-4vw, 8vh, 0) scale(0.95); }
}

@keyframes orb-float-b {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1.05); }
  40% { transform: translate3d(-7vw, 10vh, 0) scale(0.9); }
  75% { transform: translate3d(3vw, -4vh, 0) scale(1.15); }
}

#particles {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.85;
}

.bg-noise {
  position: absolute;
  inset: 0;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
}

/* Cursor glow */
.cursor-glow {
  position: fixed;
  top: 0;
  left: 0;
  width: 420px;
  height: 420px;
  margin: -210px 0 0 -210px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(79, 124, 255, 0.13), transparent 62%);
  pointer-events: none;
  z-index: 1;
  opacity: 0;
  transition: opacity 0.4s var(--ease-out);
  will-change: transform;
}

@media (hover: hover) and (pointer: fine) {
  .cursor-glow.is-active {
    opacity: 1;
  }
}

/* ---------- 4. Preloader ------------------------------------------------ */

.preloader {
  position: fixed;
  inset: 0;
  z-index: 999;
  display: grid;
  place-items: center;
  background: var(--bg-deep);
  transition: opacity 0.6s var(--ease-out), visibility 0.6s;
}

.preloader.is-done {
  opacity: 0;
  visibility: hidden;
}

.preloader__inner {
  text-align: center;
  width: min(320px, 76vw);
}

.preloader__logo {
  font-family: var(--font-mono);
  font-size: var(--fs-lg);
  letter-spacing: 0.2em;
  color: var(--text);
  margin-bottom: var(--sp-5);
}

.preloader__logo span {
  color: var(--accent);
}

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

.preloader__fill {
  height: 100%;
  width: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--accent-3));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s linear;
}

.preloader__text {
  margin-top: var(--sp-3);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--text-muted);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* ---------- 5. Scroll progress ------------------------------------------ */

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--accent-3));
  z-index: 200;
}

/* ---------- 6. Navigation ----------------------------------------------- */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-h);
  z-index: 150;
  display: flex;
  align-items: center;
  transition: background-color var(--t-mid) var(--ease-out), box-shadow var(--t-mid) var(--ease-out),
    backdrop-filter var(--t-mid) var(--ease-out), border-color var(--t-mid) var(--ease-out);
  border-bottom: 1px solid transparent;
}

.nav.is-stuck {
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-sm);
}

.nav__inner {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--sp-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: 0.02em;
  flex-shrink: 0;
}

.brand__mark {
  position: relative;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  background: linear-gradient(135deg, var(--accent), var(--accent-3));
  color: #fff;
  font-size: var(--fs-sm);
  font-weight: 700;
  box-shadow: 0 8px 22px -8px var(--accent);
  overflow: hidden;
}

.brand__mark::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255, 255, 255, 0.5), transparent 70%);
  transform: translateX(-120%);
  transition: transform 0.6s var(--ease-out);
}

.brand:hover .brand__mark::after {
  transform: translateX(120%);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand__name {
  font-size: var(--fs-sm);
  color: var(--text);
}

.brand__role {
  font-size: 0.68rem;
  color: var(--text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

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

.nav__link {
  position: relative;
  padding: var(--sp-2) var(--sp-3);
  font-size: var(--fs-sm);
  color: var(--text-soft);
  border-radius: var(--radius-sm);
  transition: color var(--t-fast) var(--ease-out), background-color var(--t-fast) var(--ease-out);
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 20%;
  bottom: 2px;
  width: 60%;
  height: 2px;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--t-mid) var(--ease-out);
}

.nav__link:hover {
  color: var(--text);
}

.nav__link.is-active {
  color: var(--text);
}

.nav__link.is-active::after {
  transform: scaleX(1);
}

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

/* Theme toggle */
.theme-toggle {
  position: relative;
  width: 62px;
  height: 32px;
  border-radius: var(--radius-full);
  background: var(--surface-2);
  border: 1px solid var(--border);
  display: inline-flex;
  align-items: center;
  padding: 3px;
  transition: background-color var(--t-mid) var(--ease-out), border-color var(--t-mid) var(--ease-out);
  flex-shrink: 0;
}

.theme-toggle__thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-3));
  box-shadow: 0 4px 12px -4px var(--accent);
  transition: transform 0.45s var(--ease-spring), background 0.4s var(--ease-out);
  display: grid;
  place-items: center;
  color: #fff;
}

[data-theme="light"] .theme-toggle__thumb {
  transform: translateX(30px);
  background: linear-gradient(135deg, #ffb020, #ff7a18);
}

.theme-toggle__icon {
  width: 14px;
  height: 14px;
  transition: opacity var(--t-fast) var(--ease-out), transform 0.4s var(--ease-out);
}

.theme-toggle__icon--sun { opacity: 0; transform: rotate(-90deg) scale(0.4); position: absolute; }
.theme-toggle__icon--moon { opacity: 1; transform: rotate(0) scale(1); }
[data-theme="light"] .theme-toggle__icon--sun { opacity: 1; transform: rotate(0) scale(1); }
[data-theme="light"] .theme-toggle__icon--moon { opacity: 0; transform: rotate(90deg) scale(0.4); }

/* Burger */
.burger {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  position: relative;
}

.burger span {
  position: absolute;
  left: 11px;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--text);
  transition: transform 0.35s var(--ease-out), opacity 0.2s var(--ease-out);
}

.burger span:nth-child(1) { top: 15px; }
.burger span:nth-child(2) { top: 20px; }
.burger span:nth-child(3) { top: 25px; }

.burger.is-open span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.burger.is-open span:nth-child(2) { opacity: 0; transform: scaleX(0.2); }
.burger.is-open span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* Mobile drawer */
.drawer {
  position: fixed;
  inset: var(--nav-h) 0 auto 0;
  z-index: 140;
  padding: var(--sp-5);
  background: color-mix(in srgb, var(--bg-alt) 96%, transparent);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transform: translateY(-14px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--t-mid) var(--ease-out), transform var(--t-mid) var(--ease-out), visibility var(--t-mid);
  display: none;
}

.drawer.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.drawer__list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
}

.drawer__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--radius);
  color: var(--text-soft);
  font-size: var(--fs-base);
  transition: background-color var(--t-fast) var(--ease-out), color var(--t-fast) var(--ease-out);
}

.drawer__link:hover,
.drawer__link.is-active {
  background: var(--accent-soft);
  color: var(--text);
}

.drawer__num {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--text-muted);
}

/* ---------- 7. Layout primitives ---------------------------------------- */

.wrap {
  position: relative;
  z-index: 2;
}

.section {
  position: relative;
  padding: var(--sp-10) 0;
}

.section--tight {
  padding: var(--sp-8) 0;
}

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--sp-5);
}

.section__head {
  max-width: 720px;
  margin-bottom: var(--sp-7);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--sp-3);
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: currentColor;
}

.section__title {
  font-size: var(--fs-2xl);
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 700;
}

.section__lead {
  margin-top: var(--sp-4);
  color: var(--text-soft);
  font-size: var(--fs-md);
}

.grad-text {
  background: linear-gradient(100deg, var(--accent), var(--accent-2) 45%, var(--accent-3));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  background-size: 200% 100%;
  animation: grad-shift 8s var(--ease-in-out) infinite;
}

@keyframes grad-shift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

/* ---------- 8. Buttons -------------------------------------------------- */

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: 0.85rem 1.6rem;
  border-radius: var(--radius-full);
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  overflow: hidden;
  transition: transform 0.35s var(--ease-spring), box-shadow var(--t-mid) var(--ease-out),
    background-color var(--t-fast) var(--ease-out), border-color var(--t-fast) var(--ease-out), color var(--t-fast);
}

.btn--primary {
  background: linear-gradient(120deg, var(--accent), var(--accent-3));
  color: #fff;
  box-shadow: 0 14px 34px -14px var(--accent);
}

.btn--primary::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, var(--accent-2), var(--accent));
  opacity: 0;
  transition: opacity var(--t-mid) var(--ease-out);
}

.btn--primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 44px -14px var(--accent);
}

.btn--primary:hover::before {
  opacity: 1;
}

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

.btn--ghost:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  background: var(--accent-soft);
}

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

.btn--sm {
  padding: 0.6rem 1.15rem;
  font-size: var(--fs-sm);
}

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

.btn__icon {
  width: 17px;
  height: 17px;
  transition: transform var(--t-mid) var(--ease-out);
}

.btn:hover .btn__icon--slide {
  transform: translateX(4px);
}

/* ---------- 9. Hero ----------------------------------------------------- */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: calc(var(--nav-h) + var(--sp-7)) 0 var(--sp-8);
}

.hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.95fr);
  gap: var(--sp-8);
  align-items: center;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
  padding: 0.4rem 0.9rem 0.4rem 0.55rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: var(--fs-sm);
  color: var(--text-soft);
  margin-bottom: var(--sp-5);
}

.status-pill__dot {
  position: relative;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #22c55e;
  flex-shrink: 0;
}

.status-pill__dot::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: inherit;
  animation: pulse-ring 2s var(--ease-out) infinite;
}

@keyframes pulse-ring {
  0% { transform: scale(1); opacity: 0.7; }
  100% { transform: scale(3.2); opacity: 0; }
}

.hero__title {
  font-size: var(--fs-hero);
  line-height: 0.98;
  letter-spacing: -0.035em;
  font-weight: 800;
  margin-bottom: var(--sp-4);
  display: flex;
  flex-wrap: wrap;
}

.hero__title-line {
  display: block;
  overflow: hidden;
  flex: 0 0 auto;
}

.hero__title-line:nth-child(3) {
  flex-basis: 100%;
}

.hero__title-line > span {
  display: block;
  transform: translateY(105%);
  animation: line-up 1s var(--ease-out) forwards;
}

.hero__title-line:nth-child(2) > span { animation-delay: 0.12s; }
.hero__title-line:nth-child(3) > span { animation-delay: 0.24s; }

@keyframes line-up {
  to { transform: translateY(0); }
}

.hero__role {
  font-family: var(--font-mono);
  font-size: clamp(0.85rem, 1.6vw, 1.05rem);
  color: var(--text-soft);
  letter-spacing: 0.02em;
  min-height: 1.9em;
  margin-bottom: var(--sp-4);
  display: flex;
  align-items: center;
  gap: 2px;
}

.typing-caret {
  display: inline-block;
  width: 9px;
  height: 1.1em;
  background: var(--accent-2);
  transform: translateY(2px);
  animation: caret-blink 1s steps(2, start) infinite;
}

@keyframes caret-blink {
  50% { opacity: 0; }
}

.hero__desc {
  max-width: 56ch;
  color: var(--text-soft);
  font-size: var(--fs-md);
  margin-bottom: var(--sp-6);
}

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

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

/* Hero code card */
.hero__visual {
  position: relative;
  perspective: 1400px;
}

.code-card {
  position: relative;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface-solid) 92%, transparent);
  box-shadow: var(--shadow);
  overflow: hidden;
  transform: rotateY(-9deg) rotateX(4deg);
  transition: transform 0.7s var(--ease-out);
  will-change: transform;
}

.hero__visual:hover .code-card {
  transform: rotateY(-3deg) rotateX(2deg) translateY(-6px);
}

.code-card__bar {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 0.7rem var(--sp-4);
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.code-card__dots {
  display: flex;
  gap: 6px;
}

.code-card__dots i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--surface-2);
  border: 1px solid var(--border-strong);
}

.code-card__dots i:nth-child(1) { background: #ff5f57; border-color: transparent; }
.code-card__dots i:nth-child(2) { background: #febc2e; border-color: transparent; }
.code-card__dots i:nth-child(3) { background: #28c840; border-color: transparent; }

.code-card__file {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--text-muted);
  margin-left: var(--sp-2);
}

.code-card__badge {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-full);
  background: var(--accent-soft);
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.code-card__author {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--text-soft);
}

.code-card__author-name { white-space: nowrap; }

.code-card__avatar {
  display: inline-block;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  overflow: hidden;
  border: 1px solid var(--border-strong);
  background: var(--surface-2);
  flex: 0 0 22px;
}

.code-card__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

@media (max-width: 720px) {
  .code-card__author-name { display: none; }
}

.code-card__body {
  padding: var(--sp-5);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.85;
  color: var(--text-soft);
  overflow-x: auto;
}

.code-card__body pre {
  font: inherit;
  white-space: pre;
}

.tok-key { color: #ff7ab6; }
.tok-str { color: #7ee787; }
.tok-num { color: #ffab70; }
.tok-com { color: var(--text-muted); font-style: italic; }
.tok-var { color: #79c0ff; }
.tok-fn { color: #d2a8ff; }

[data-theme="light"] .tok-key { color: #cf222e; }
[data-theme="light"] .tok-str { color: #0a7d32; }
[data-theme="light"] .tok-num { color: #953800; }
[data-theme="light"] .tok-var { color: #0550ae; }
[data-theme="light"] .tok-fn { color: #8250df; }

.code-card__meter {
  border-top: 1px solid var(--border);
  padding: var(--sp-4);
  display: grid;
  gap: var(--sp-3);
  background: var(--surface);
}

.meter {
  display: grid;
  gap: 6px;
}

.meter__top {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.meter__track {
  height: 5px;
  border-radius: var(--radius-full);
  background: var(--surface-2);
  overflow: hidden;
}

.meter__fill {
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: transform 1.6s var(--ease-out);
}

/* Floating stat chips */
.float-chip {
  position: absolute;
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 0.55rem 0.85rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface-solid) 94%, transparent);
  box-shadow: var(--shadow-sm);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--text-soft);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: transform var(--t-mid) var(--ease-spring), border-color var(--t-fast) var(--ease-out);
  z-index: 3;
}

.float-chip:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
}

.float-chip strong {
  font-size: var(--fs-base);
  color: var(--text);
}

.float-chip--1 { top: -18px; left: -18px; }
.float-chip--2 { top: 28%; right: -16px; }
.float-chip--3 { top: 62%; left: -22px; }

@media (max-width: 1080px) {
  .float-chip--1 { left: -10px; top: -14px; }
  .float-chip--2 { right: -10px; }
  .float-chip--3 { left: -10px; }
}

@media (max-width: 640px) {
  .float-chip--1 { left: -6px; top: -10px; }
  .float-chip--3 { left: -6px; }
  .float-chip--2 { right: -6px; }
}

.scroll-hint {
  position: absolute;
  bottom: var(--sp-5);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.scroll-hint__line {
  width: 1px;
  height: 46px;
  background: linear-gradient(var(--accent), transparent);
  position: relative;
  overflow: hidden;
}

.scroll-hint__line::after {
  content: "";
  position: absolute;
  top: -46px;
  left: 0;
  width: 1px;
  height: 46px;
  background: var(--accent-2);
  animation: hint-run 2.2s var(--ease-in-out) infinite;
}

@keyframes hint-run {
  0% { transform: translateY(0); }
  100% { transform: translateY(92px); }
}

/* ---------- 10. Marquee ------------------------------------------------- */

.marquee {
  position: relative;
  overflow: hidden;
  padding: var(--sp-5) 0;
  border-block: 1px solid var(--border);
  background: var(--surface);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}

.marquee__track {
  display: flex;
  gap: var(--sp-7);
  width: max-content;
  animation: marquee 32s linear infinite;
}

.marquee:hover .marquee__track {
  animation-play-state: paused;
}

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.marquee__item {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--text-muted);
  white-space: nowrap;
  transition: color var(--t-fast) var(--ease-out);
}

.marquee__item:hover {
  color: var(--text);
}

.marquee__item::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.6;
}

/* ---------- 11. Stats --------------------------------------------------- */

.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--sp-4);
}

.stat {
  position: relative;
  min-width: 0;
  padding: var(--sp-5) var(--sp-4);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  text-align: center;
  overflow: hidden;
  transition: transform var(--t-mid) var(--ease-out), border-color var(--t-mid) var(--ease-out),
    box-shadow var(--t-mid) var(--ease-out);
}

.stat::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--accent-3));
  opacity: 0;
  transition: opacity var(--t-mid) var(--ease-out);
}

.stat::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, var(--accent-soft), transparent 70%);
  opacity: 0;
  transition: opacity var(--t-mid) var(--ease-out);
}

.stat:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: var(--shadow);
}

.stat:hover::before {
  opacity: 1;
}

.stat:hover::after {
  opacity: 1;
}

.stat__num {
  position: relative;
  font-size: clamp(2rem, 4vw, 2.9rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.stat__label {
  position: relative;
  margin-top: var(--sp-2);
  font-size: var(--fs-sm);
  color: var(--text-muted);
  word-wrap: break-word;
  hyphens: auto;
}

.stat__sub {
  position: relative;
  margin-top: 2px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  opacity: 0.75;
}

/* ---------- 12. Cards & grids ------------------------------------------- */

.grid {
  display: grid;
  gap: var(--sp-4);
  align-items: stretch;
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: var(--sp-6);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  overflow: hidden;
  transition: transform var(--t-mid) var(--ease-out), border-color var(--t-mid) var(--ease-out),
    box-shadow var(--t-mid) var(--ease-out), background-color var(--t-mid) var(--ease-out);
}

.card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(600px circle at var(--mx, 50%) var(--my, 0%), var(--accent-soft), transparent 42%);
  opacity: 0;
  transition: opacity var(--t-mid) var(--ease-out);
  pointer-events: none;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--accent-3));
  opacity: 0;
  transition: opacity var(--t-mid) var(--ease-out);
}

.card:hover {
  transform: translateY(-5px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow);
}

.card:hover::after {
  opacity: 1;
}

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

.card__icon {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  background: var(--accent-soft);
  color: var(--accent);
  margin-bottom: var(--sp-4);
  border: 1px solid var(--border);
}

.card__icon svg {
  width: 21px;
  height: 21px;
}

.card__title {
  font-size: var(--fs-lg);
  font-weight: 650;
  letter-spacing: -0.01em;
  margin-bottom: var(--sp-2);
}

.card__text {
  color: var(--text-soft);
  font-size: var(--fs-sm);
  flex: 1;
}

.card__text--lead {
  margin-top: 2px;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--text-muted);
}

.card__list {
  display: grid;
  gap: var(--sp-2);
  margin-top: var(--sp-4);
}

.card__list li {
  position: relative;
  padding-left: 1.35rem;
  font-size: var(--fs-sm);
  color: var(--text-soft);
}

.card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  transform: rotate(45deg);
}

/* ---------- 13. Skills -------------------------------------------------- */

.skills {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--sp-6) var(--sp-7);
}

.skill-group__title {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  font-size: var(--fs-sm);
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--sp-5);
}

.skill-group__title::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}

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

.skill__top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--sp-3);
  margin-bottom: var(--sp-2);
}

.skill__name {
  font-size: var(--fs-base);
  font-weight: 550;
}

.skill__meta {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--text-muted);
}

.skill__track {
  position: relative;
  height: 7px;
  border-radius: var(--radius-full);
  background: var(--surface-2);
  overflow: hidden;
}

.skill__fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: transform 1.4s var(--ease-out);
  overflow: hidden;
}

.skill__fill::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.45), transparent);
  animation: shimmer 2.4s var(--ease-in-out) infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  60%, 100% { transform: translateX(220%); }
}

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

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: var(--fs-sm);
  color: var(--text-soft);
  transition: transform var(--t-fast) var(--ease-spring), border-color var(--t-fast) var(--ease-out),
    color var(--t-fast) var(--ease-out), background-color var(--t-fast) var(--ease-out);
}

.chip:hover {
  transform: translateY(-2px) scale(1.03);
  border-color: var(--accent);
  color: var(--text);
  background: var(--accent-soft);
}

/* ---------- 14. Timeline ------------------------------------------------ */

.timeline {
  position: relative;
  padding-left: 2.4rem;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  border-radius: var(--radius-full);
  background: var(--border);
}

.timeline__progress {
  position: absolute;
  left: 7px;
  top: 8px;
  width: 2px;
  height: 100%;
  border-radius: var(--radius-full);
  background: linear-gradient(var(--accent), var(--accent-2), var(--accent-3));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.25s linear;
  box-shadow: 0 0 14px var(--accent);
}

.tl-item {
  position: relative;
  padding-bottom: var(--sp-7);
}

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

.tl-item__dot {
  position: absolute;
  left: -2.4rem;
  top: 4px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--border-strong);
  display: grid;
  place-items: center;
  transition: border-color var(--t-mid) var(--ease-out), box-shadow var(--t-mid) var(--ease-out),
    transform var(--t-mid) var(--ease-spring);
}

.tl-item__dot::after {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-muted);
  transition: background var(--t-mid) var(--ease-out), transform var(--t-mid) var(--ease-out);
}

.tl-item.is-in .tl-item__dot {
  border-color: var(--accent);
  box-shadow: 0 0 0 5px var(--accent-soft);
  transform: scale(1.1);
}

.tl-item.is-in .tl-item__dot::after {
  background: var(--accent);
  transform: scale(1.2);
}

.tl-item__period {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  padding: 0.25rem 0.7rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  margin-bottom: var(--sp-3);
}

.tl-item__title {
  font-size: var(--fs-xl);
  font-weight: 680;
  letter-spacing: -0.015em;
}

.tl-item__company {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  margin-top: 2px;
  color: var(--accent);
  font-size: var(--fs-sm);
  font-weight: 550;
}

.tl-item__company span {
  color: var(--text-muted);
  font-weight: 400;
}

.tl-item__body {
  margin-top: var(--sp-4);
  display: grid;
  gap: var(--sp-3);
}

.tl-point {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: var(--sp-3);
  align-items: start;
  font-size: var(--fs-sm);
  color: var(--text-soft);
}

.tl-point__icon {
  margin-top: 3px;
  width: 20px;
  height: 20px;
  display: grid;
  place-items: center;
  border-radius: 6px;
  background: var(--accent-soft);
  color: var(--accent);
}

.tl-point__icon svg {
  width: 12px;
  height: 12px;
}

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

/* ---------- 15. Mobile / apps ------------------------------------------- */

.app-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--sp-4);
}

.app-card {
  position: relative;
  padding: var(--sp-5);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  text-align: center;
  overflow: hidden;
  transition: transform var(--t-mid) var(--ease-out), border-color var(--t-mid) var(--ease-out),
    box-shadow var(--t-mid) var(--ease-out);
}

.app-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--accent-3));
  opacity: 0;
  transition: opacity var(--t-mid) var(--ease-out);
}

.app-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: var(--shadow);
}

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

.app-card__num {
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  background: linear-gradient(135deg, var(--accent), var(--accent-3));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-variant-numeric: tabular-nums;
}

.app-card__label {
  margin-top: var(--sp-2);
  font-size: var(--fs-base);
  font-weight: 600;
}

.app-card__sub {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--text-muted);
  letter-spacing: 0.06em;
}

/* ---------- 16. Languages ----------------------------------------------- */

.lang-list {
  display: grid;
  gap: var(--sp-4);
}

.lang {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  padding-bottom: var(--sp-4);
  border-bottom: 1px solid var(--border);
}

.lang:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.lang__name {
  font-size: var(--fs-base);
  font-weight: 550;
}

.lang__level {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--text-muted);
  text-align: right;
}

.lang__bars {
  display: flex;
  gap: 4px;
}

.lang__bars i {
  width: 26px;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--surface-2);
  transition: background var(--t-slow) var(--ease-out), transform var(--t-mid) var(--ease-spring);
}

.lang.is-in .lang__bars i.is-on {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

/* ---------- 18. Footer -------------------------------------------------- */

.footer {
  position: relative;
  padding: var(--sp-7) 0 var(--sp-5);
  border-top: 1px solid var(--border);
  background: var(--bg-alt);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-5);
  flex-wrap: wrap;
}

.footer__brand {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--text-soft);
}

.footer__brand strong {
  color: var(--text);
}

.footer__meta {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--text-muted);
}

.footer__links {
  display: flex;
  gap: var(--sp-2);
  flex-wrap: wrap;
}

.social-btn {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  border: 1px solid transparent;
  background: var(--surface);
  color: #fff;
  transition: transform var(--t-mid) var(--ease-spring), color var(--t-fast) var(--ease-out),
    border-color var(--t-fast) var(--ease-out), background-color var(--t-fast) var(--ease-out),
    opacity var(--t-fast) var(--ease-out);
}
.social-btn--telegram { background: #229ed9; }
.social-btn--whatsapp { background: #25d366; }
.social-btn--viber    { background: #7360f2; }

.social-btn svg {
  width: 18px;
  height: 18px;
}

.social-btn:hover {
  transform: translateY(-4px);
  opacity: 0.85;
}

/* Back to top */
.to-top {
  position: fixed;
  right: var(--sp-5);
  bottom: var(--sp-5);
  z-index: 120;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface-solid) 92%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  color: var(--text);
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: opacity var(--t-mid) var(--ease-out), transform var(--t-mid) var(--ease-out),
    visibility var(--t-mid), color var(--t-fast), border-color var(--t-fast);
}

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

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

.to-top svg {
  width: 18px;
  height: 18px;
}

/* ---------- 19. Reveal animations --------------------------------------- */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.75s var(--ease-out), transform 0.75s var(--ease-out);
}

.reveal.is-in {
  opacity: 1;
  transform: none;
  will-change: auto;
}

.reveal--left { transform: translateX(-34px); }
.reveal--right { transform: translateX(34px); }
.reveal--scale { transform: scale(0.94); }
.reveal.is-in { transform: none; will-change: auto; }

.reveal[data-d="1"] { transition-delay: 0.08s; }
.reveal[data-d="2"] { transition-delay: 0.16s; }
.reveal[data-d="3"] { transition-delay: 0.24s; }
.reveal[data-d="4"] { transition-delay: 0.32s; }
.reveal[data-d="5"] { transition-delay: 0.4s; }
.reveal[data-d="6"] { transition-delay: 0.48s; }

/* ---------- 20. Language dropdown ---------------------------------------- */

.lang-dropdown {
  position: relative;
  flex-shrink: 0;
}

.lang-dropdown__btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 36px;
  padding: 0 10px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-soft);
  font: inherit;
  font-size: var(--fs-sm);
  font-weight: 550;
  cursor: pointer;
  transition: border-color var(--t-fast) var(--ease-out),
              background-color var(--t-fast) var(--ease-out),
              color var(--t-fast) var(--ease-out);
}

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

.lang-dropdown.is-open .lang-dropdown__btn {
  border-color: var(--accent);
  color: var(--text);
  background: var(--accent-soft);
}

.lang-dropdown__icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  opacity: 0.7;
}

.lang-dropdown.is-open .lang-dropdown__icon {
  opacity: 1;
  color: var(--accent);
}

.lang-dropdown__current {
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.lang-dropdown__chevron {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  transition: transform var(--t-fast) var(--ease-out);
}

.lang-dropdown.is-open .lang-dropdown__chevron {
  transform: rotate(180deg);
}

.lang-dropdown__menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 180px;
  max-height: 380px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
  list-style: none;
  margin: 0;
  padding: 6px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface-solid) 96%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px) scale(0.96);
  transform-origin: top right;
  transition: opacity 0.25s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.25s cubic-bezier(0.16, 1, 0.3, 1), transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 16px 40px -8px rgba(0, 0, 0, 0.4), 0 0 0 1px inset rgba(255, 255, 255, 0.05);
  z-index: 100;
}
.lang-dropdown__menu::-webkit-scrollbar { width: 6px; }
.lang-dropdown__menu::-webkit-scrollbar-track { background: transparent; margin: 6px; }
.lang-dropdown__menu::-webkit-scrollbar-thumb { background-color: var(--border-strong); border-radius: var(--radius-full); }
.lang-dropdown__menu::-webkit-scrollbar-thumb:hover { background-color: var(--text-muted); }

.lang-dropdown.is-open .lang-dropdown__menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.lang-dropdown__item {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-soft);
  text-decoration: none;
  transition: background-color var(--t-fast) var(--ease-out),
              color var(--t-fast) var(--ease-out);
}

.lang-dropdown__item:hover {
  background: var(--accent-soft);
  color: var(--text);
}

.lang-dropdown__item.is-active {
  color: var(--text);
  background: var(--accent-soft);
}

.lang-dropdown__code {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--accent);
  flex-shrink: 0;
  min-width: 24px;
}

.lang-dropdown__name {
  font-size: var(--fs-sm);
}

.lang-dropdown__item.is-active .lang-dropdown__name {
  font-weight: 600;
}

@media (max-width: 640px) {
  .lang-dropdown__btn {
    padding: 0 8px;
    gap: 4px;
  }
  .lang-dropdown__current {
    display: none;
  }
}

/* Fallback for browsers without backdrop-filter */
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .lang-dropdown__menu {
    background: var(--surface-solid);
  }
}

/* ---------- 22. Form headings ------------------------------------------ */

.form__title {
  font-size: var(--fs-lg);
  font-weight: 650;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}

.form__sub {
  color: var(--text-muted);
  font-size: var(--fs-sm);
  margin-bottom: var(--sp-5);
}

/* ---------- 23. Optional email hint ----------------------------------- */

.field__input:not(:focus):placeholder-shown + .field__label::after {
  content: "";
}

/* ---------- 24. Nav tightening for new actions row --------------------- */

@media (max-width: 1180px) {
  .nav__menu {
    gap: 0;
  }
  .nav__link {
    padding: var(--sp-2) var(--sp-2);
  }
}

@media (max-width: 980px) {
  .nav__menu {
    display: none;
  }
  .burger {
    display: block;
  }
  .drawer {
    display: block;
  }
}

@media (max-width: 1080px) {
  .hero__inner {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--sp-8);
  }
  .hero__inner > * {
    min-width: 0;
  }
  .hero__visual {
    width: 100%;
    margin-inline: auto;
  }
  .code-card {
    transform: none;
    max-width: 100%;
  }
  .hero__visual:hover .code-card {
    transform: translateY(-4px);
  }
  .stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .nav__menu {
    display: none;
  }
  .burger {
    display: block;
  }
  .drawer {
    display: block;
  }
  .grid--3,
  .grid--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .skills {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--sp-5) var(--sp-5);
  }
  .app-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .section {
    padding: var(--sp-9) 0;
  }
}

@media (max-width: 768px) {
  .skills {
    grid-template-columns: 1fr;
    gap: var(--sp-6);
  }
  .app-grid {
    grid-template-columns: 1fr;
  }
  .grid {
    gap: var(--sp-3);
  }
  .section {
    padding: var(--sp-8) 0;
  }
  .section__head {
    margin-bottom: var(--sp-6);
  }
  .container {
    padding: 0 var(--sp-4);
  }
  .hero__desc {
    font-size: var(--fs-base);
  }
  .tl-item__title {
    font-size: var(--fs-lg);
  }
  .card {
    padding: var(--sp-5);
  }
}

@media (max-width: 640px) {
  :root {
    --nav-h: 66px;
  }
  .brand__text {
    display: none;
  }
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: minmax(0, 1fr);
  }
  .stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--sp-2);
  }
  .stat {
    padding: var(--sp-3) var(--sp-2);
  }
  .stat__num {
    font-size: 2.2rem;
  }
  .stat__label {
    font-size: 0.75rem;
    line-height: 1.25;
    margin-top: 0.5rem;
  }
  .stat__sub {
    font-size: 0.55rem;
    margin-top: 4px;
  }
  
  .nav__actions {
    gap: 0.35rem;
  }
  .nav .btn--primary {
    display: none;
  }
  .lang-dropdown__btn {
    padding: 0.35rem 0.5rem;
    gap: 0.2rem;
  }
  .lang-dropdown__current {
    font-size: 0.8rem;
  }
  .theme-toggle {
    width: 54px;
    height: 28px;
  }
  .theme-toggle__thumb {
    width: 22px;
    height: 22px;
  }
  .theme-toggle[aria-checked="true"] .theme-toggle__thumb {
    transform: translateX(26px);
  }
  .nav .btn__icon {
    width: 16px;
    height: 16px;
  }
  .form__row {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
  }
  .card,
  .form {
    padding: var(--sp-5);
  }
  .hero {
    min-height: auto;
    padding-top: calc(var(--nav-h) + var(--sp-6));
  }
  .status-pill {
    display: flex;
    width: 100%;
    max-width: 100%;
    align-items: flex-start;
    line-height: 1.4;
  }
  .status-pill > span:last-child {
    min-width: 0;
    overflow-wrap: anywhere;
  }
  .hero__cta {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
  }
  .hero__cta .btn {
    width: 100%;
  }
  .scroll-hint {
    display: none;
  }
  .footer__inner {
    flex-direction: column;
    text-align: center;
  }
  .footer__links {
    justify-content: center;
  }
}

/* ---------- 21. Reduced motion ------------------------------------------ */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
  .hero__title-line > span {
    transform: none;
  }
}

/* Print */
@media print {
  .nav, .drawer, .to-top, .bg-layers, .preloader, .scroll-progress, .marquee, .lang-switch, .footer__form {
    display: none !important;
  }
  body {
    background: #fff;
    color: #000;
  }
}

/* ==========================================================================
   25. About person — avatar + developer info card
   ========================================================================== */

.about__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: var(--sp-7);
  align-items: start;
  margin-bottom: var(--sp-8);
}

.about__main {
  min-width: 0;
}

.about__sidebar {
  position: relative;
}

@media (max-width: 980px) {
  .about__layout {
    grid-template-columns: 1fr;
    gap: var(--sp-6);
  }
  .about__sidebar {
    position: static;
    order: -1;
    display: flex;
    justify-content: center;
  }
}

@media (max-width: 680px) {
  .about__sidebar {
    order: 1;
  }
}

.about-person {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--sp-4);
  padding: var(--sp-6) var(--sp-5);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  transition: border-color var(--t-mid) var(--ease-out), box-shadow var(--t-mid) var(--ease-out);
}

.about-person:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-sm);
}

.about-person__photo {
  position: relative;
  flex-shrink: 0;
  display: block;
  width: 96px;
  height: 96px;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid var(--border-strong);
  box-shadow: var(--shadow-sm);
  transition: transform var(--t-mid) var(--ease-spring), border-color var(--t-fast) var(--ease-out);
}

.about-person__photo:hover {
  transform: scale(1.05);
  border-color: var(--accent);
}

.about-person__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.about-person__online {
  position: absolute;
  bottom: 3px;
  right: 3px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #22c55e;
  border: 2px solid var(--bg);
  z-index: 1;
}

.about-person__online::after {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: 50%;
  border: 2px solid #22c55e;
  animation: pulse-ring 2s var(--ease-out) infinite;
}

.about-person__body {
  flex: 1;
  min-width: 0;
}

.about-person__name {
  font-family: var(--font-mono);
  font-size: var(--fs-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  line-height: 1.2;
}

.about-person__role {
  font-size: var(--fs-sm);
  color: var(--accent);
  font-weight: 550;
  margin-top: 2px;
}

@media (max-width: 520px) {
  .about-person {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }
}

/* ==========================================================================
   26. FAQ accordion
   ========================================================================== */

.faq-list {
  display: grid;
  gap: var(--sp-3);
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
  transition: border-color var(--t-fast) var(--ease-out),
              background-color var(--t-fast) var(--ease-out);
}

.faq-item:hover {
  border-color: var(--border-strong);
}

.faq-item[open] {
  border-color: rgba(79, 124, 255, 0.4);
  background: var(--surface-2);
}

.faq-item > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  padding: var(--sp-4) var(--sp-5);
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: background-color var(--t-fast) var(--ease-out);
}

.faq-item > summary::-webkit-details-marker {
  display: none;
}

.faq-item > summary:hover {
  background: var(--accent-soft);
}

.faq-item__q {
  font-size: var(--fs-md);
  font-weight: 600;
  color: var(--text);
  line-height: 1.4;
}

.faq-item__icon {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  transition: transform var(--t-mid) var(--ease-spring),
              background-color var(--t-fast) var(--ease-out),
              color var(--t-fast) var(--ease-out);
}

.faq-item__icon svg {
  width: 16px;
  height: 16px;
}

.faq-item[open] .faq-item__icon {
  transform: rotate(135deg);
  background: var(--accent);
  color: #fff;
}

.faq-item__a {
  padding: 0 var(--sp-5) var(--sp-5);
  color: var(--text-soft);
  font-size: var(--fs-sm);
  line-height: 1.7;
  animation: faq-open 0.35s var(--ease-out);
}

@keyframes faq-open {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .faq-item__a { animation: none; }
  .faq-item__icon { transition: none; }
}

/* ==========================================================================\n   28. Minor fixes — hero__content, 
   ========================================================================== */

.hero__content {
  min-width: 0;
}



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

/* ==========================================================================
   29. Messenger modal
   ========================================================================== */

.modal {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-4);
  pointer-events: none;
  visibility: hidden;
}

.modal.is-open {
  pointer-events: auto;
  visibility: visible;
}

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(2, 4, 10, 0.65);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  opacity: 0;
  transition: opacity var(--t-mid) var(--ease-out);
}

.modal.is-open .modal__backdrop {
  opacity: 1;
}

.modal__dialog {
  position: relative;
  width: 100%;
  max-width: 460px;
  max-height: calc(100vh - 2 * var(--sp-4));
  overflow-y: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--surface-solid);
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(20px) scale(0.96);
  transition: transform var(--t-mid) var(--ease-spring), opacity var(--t-mid) var(--ease-out);
}

.modal.is-open .modal__dialog {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.modal__close {
  position: absolute;
  top: var(--sp-3);
  right: var(--sp-3);
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-soft);
  cursor: pointer;
  z-index: 2;
  transition: color var(--t-fast), border-color var(--t-fast), transform var(--t-fast) var(--ease-spring);
}

.modal__close:hover {
  color: var(--text);
  border-color: var(--accent);
  transform: rotate(90deg);
}

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

.modal__head {
  padding: var(--sp-6) var(--sp-5) var(--sp-3);
  text-align: center;
}

.modal__title {
  margin: 0 0 4px;
  font-size: var(--fs-xl);
  font-weight: 650;
  letter-spacing: -0.01em;
}

.modal__sub {
  margin: 0;
  font-size: var(--fs-sm);
  color: var(--text-muted);
  line-height: 1.45;
}

.modal__body {
  padding: var(--sp-2) var(--sp-5);
}

.messenger-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.messenger-option {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  color: inherit;
  text-decoration: none;
  transition: transform var(--t-fast) var(--ease-out),
              border-color var(--t-fast) var(--ease-out),
              background-color var(--t-fast) var(--ease-out);
}

.messenger-option:hover {
  transform: translateX(4px);
  border-color: var(--border-strong);
  background: var(--surface-2);
}

.messenger-option__icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  border-radius: 12px;
  color: #fff;
  transition: transform var(--t-mid) var(--ease-spring);
}

.messenger-option:hover .messenger-option__icon {
  transform: scale(1.08);
}

.messenger-option__icon svg {
  width: 20px;
  height: 20px;
}

.messenger-option__icon--telegram { background: #229ed9; }
.messenger-option__icon--whatsapp { background: #25d366; }
.messenger-option__icon--viber    { background: #7360f2; }

.messenger-option__body {
  flex: 1;
  min-width: 0;
}

.messenger-option__name {
  font-weight: 600;
  font-size: var(--fs-md);
}

.messenger-option__value {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--text-muted);
  margin-top: 2px;
}

.messenger-option__arrow {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--text-muted);
  transition: transform var(--t-mid) var(--ease-out), color var(--t-fast);
}

.messenger-option:hover .messenger-option__arrow {
  color: var(--accent);
  transform: translate(3px, -3px);
}

.modal__foot {
  padding: var(--sp-3) var(--sp-5) var(--sp-5);
  text-align: center;
}

.modal__note {
  margin: 0;
  font-size: var(--fs-xs);
  color: var(--text-muted);
  line-height: 1.45;
}

@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .modal__backdrop { background: rgba(2, 4, 10, 0.85); }
}

@media (max-width: 480px) {
  .modal__dialog {
    max-width: 100%;
    border-radius: var(--radius);
  }
  .modal__head {
    padding: var(--sp-5) var(--sp-4) var(--sp-2);
  }
  .modal__body { padding: var(--sp-2) var(--sp-4); }
  .modal__foot { padding: var(--sp-2) var(--sp-4) var(--sp-4); }
}

@media (prefers-reduced-motion: reduce) {
  .modal__dialog,
  .modal__close,
  .messenger-option,
  .messenger-option__icon,
  .messenger-option__arrow { transition: none; }
}

/* Browsers without backdrop-filter (older Firefox before 103, etc.) */
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .nav.is-stuck,
  .drawer,
  /* .social-btn background override removed so native colors stay */
}

/* Reduced-motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}