/* ==========================================================================
   Viktorina v2 – "Litų lietus" (rain of litai)
   All colours live here. Change the palette in one minute.
   ========================================================================== */
:root {
  /* Brand palette (given) */
  --navy: #2f3e4f;
  --sand: #c2b280;
  --espresso: #3b2a24;
  --paper: #f0ece8;
  --ink: #1f1f1f;

  /* Derived shades (keep contrast ≥ 4.5:1 for text) */
  --sand-ink: #6e5f2e;      /* sand dark enough for text on paper (5.9:1) */
  --sand-soft: #e3d8b6;
  --navy-deep: #141a21;
  --navy-surface: #1f2934;

  /* Light theme tokens */
  --bg: var(--paper);
  --surface: #faf8f5;
  --surface-2: #f5f0e6;
  --text: var(--ink);
  --muted: #4a4540;
  --heading: var(--espresso);
  --accent: var(--navy);
  --accent-text: var(--paper);
  --accent-2: var(--sand);
  --accent-2-text: var(--sand-ink);
  --border: #8c8374;
  --hairline: rgba(59, 42, 36, 0.14);
  --ok: #2f6b3a;
  --ok-bg: #e4efe2;
  --bad: #9a3324;
  --bad-bg: #f6e3de;
  --shadow: 0 1px 2px rgba(59, 42, 36, 0.08), 0 12px 32px -12px rgba(47, 62, 79, 0.35);
  --shadow-lift: 0 2px 4px rgba(59, 42, 36, 0.1), 0 22px 40px -16px rgba(47, 62, 79, 0.45);

  /* Live background tokens */
  --glow-1: rgba(194, 178, 128, 0.55);
  --glow-2: rgba(47, 62, 79, 0.28);
  --guilloche: rgba(59, 42, 36, 0.07);
  --note-fill: #e6dcc0;
  --note-line: rgba(47, 62, 79, 0.35);
  --coin-fill: #c2b280;
  --coin-edge: #8f7f4d;
  --coin-text: #3b2a24;
  --mark: rgba(47, 62, 79, 0.28);
  --particle-opacity: 0.75;

  --font-display: "Aclonica", "Trebuchet MS", sans-serif;
  --font-body: "Sansation", "Segoe UI", system-ui, sans-serif;
  --radius: 18px;
  --radius-sm: 12px;
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  color-scheme: light;
}

/* Dark theme – same palette, deeper shades, glow brighter */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: var(--navy-deep);
    --surface: var(--navy-surface);
    --surface-2: #26323f;
    --text: var(--paper);
    --muted: #bdb6ad;
    --heading: #d9cca2;
    --accent: var(--sand);
    --accent-text: var(--ink);
    --accent-2: var(--sand);
    --accent-2-text: var(--sand);
    --border: #6d7887;
    --hairline: rgba(240, 236, 232, 0.12);
    --ok: #8fd19e;
    --ok-bg: rgba(143, 209, 158, 0.12);
    --bad: #f0a193;
    --bad-bg: rgba(240, 161, 147, 0.12);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 16px 36px -14px rgba(0, 0, 0, 0.7);
    --shadow-lift: 0 2px 4px rgba(0, 0, 0, 0.45), 0 26px 46px -16px rgba(0, 0, 0, 0.8);
    --glow-1: rgba(194, 178, 128, 0.42);
    --glow-2: rgba(92, 122, 156, 0.4);
    --guilloche: rgba(194, 178, 128, 0.1);
    --note-fill: #3a4656;
    --note-line: rgba(194, 178, 128, 0.55);
    --coin-fill: #c2b280;
    --coin-edge: #efe2b4;
    --coin-text: #1f1f1f;
    --mark: rgba(194, 178, 128, 0.4);
    --particle-opacity: 0.9;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: var(--navy-deep);
  --surface: var(--navy-surface);
  --surface-2: #26323f;
  --text: var(--paper);
  --muted: #bdb6ad;
  --heading: #d9cca2;
  --accent: var(--sand);
  --accent-text: var(--ink);
  --accent-2: var(--sand);
  --accent-2-text: var(--sand);
  --border: #6d7887;
  --hairline: rgba(240, 236, 232, 0.12);
  --ok: #8fd19e;
  --ok-bg: rgba(143, 209, 158, 0.12);
  --bad: #f0a193;
  --bad-bg: rgba(240, 161, 147, 0.12);
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 16px 36px -14px rgba(0, 0, 0, 0.7);
  --shadow-lift: 0 2px 4px rgba(0, 0, 0, 0.45), 0 26px 46px -16px rgba(0, 0, 0, 0.8);
  --glow-1: rgba(194, 178, 128, 0.42);
  --glow-2: rgba(92, 122, 156, 0.4);
  --guilloche: rgba(194, 178, 128, 0.1);
  --note-fill: #3a4656;
  --note-line: rgba(194, 178, 128, 0.55);
  --coin-fill: #c2b280;
  --coin-edge: #efe2b4;
  --coin-text: #1f1f1f;
  --mark: rgba(194, 178, 128, 0.4);
  --particle-opacity: 0.9;
  color-scheme: dark;
}

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

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

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color 0.4s var(--ease), color 0.4s var(--ease);
}

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

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 400;
  color: var(--heading);
  line-height: 1.15;
  margin: 0 0 0.5em;
}

p {
  margin: 0 0 1em;
}

a {
  color: var(--accent-2-text);
  text-underline-offset: 3px;
}

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 100;
  padding: 0.6rem 1rem;
  background: var(--accent);
  color: var(--accent-text);
  border-radius: var(--radius-sm);
  font-weight: 700;
  text-decoration: none;
  transition: top 0.2s var(--ease);
}

.skip-link:focus {
  top: 1rem;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.wrap {
  width: min(1120px, 100% - 32px);
  margin-inline: auto;
}

/* ---------- Live background ---------- */
.live-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.live-bg__glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  will-change: transform;
}

.live-bg__glow--1 {
  width: 55vmax;
  height: 55vmax;
  left: -18vmax;
  top: -20vmax;
  background: radial-gradient(circle, var(--glow-1), transparent 65%);
  animation: glow-drift-1 26s ease-in-out infinite alternate;
}

.live-bg__glow--2 {
  width: 50vmax;
  height: 50vmax;
  right: -20vmax;
  bottom: -22vmax;
  background: radial-gradient(circle, var(--glow-2), transparent 65%);
  animation: glow-drift-2 32s ease-in-out infinite alternate;
}

.live-bg__rosette {
  position: absolute;
  width: 115vmax;
  height: 115vmax;
  left: 50%;
  top: 50%;
  margin: -57.5vmax 0 0 -57.5vmax;
  color: var(--guilloche);
  animation: rosette-spin 240s linear infinite;
  will-change: transform;
}

.live-bg__rosette svg {
  width: 100%;
  height: 100%;
}

.particle {
  position: absolute;
  top: -12vh;
  opacity: 0;
  will-change: transform, opacity;
  animation: fall var(--dur) linear var(--delay) infinite;
}

.particle__spin {
  display: block;
  animation: flutter var(--spin) ease-in-out infinite alternate;
}

.particle--note .particle__spin {
  width: var(--w);
  height: calc(var(--w) * 0.48);
  border-radius: 3px;
  background:
    repeating-linear-gradient(115deg, var(--note-line) 0 1px, transparent 1px 5px),
    var(--note-fill);
  box-shadow: inset 0 0 0 2px var(--note-line);
}

.particle--coin .particle__spin {
  width: var(--w);
  height: var(--w);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font: 700 calc(var(--w) * 0.36) / 1 var(--font-body);
  color: var(--coin-text);
  background: radial-gradient(circle at 35% 30%, var(--sand-soft), var(--coin-fill) 55%, var(--coin-edge));
  box-shadow: inset 0 0 0 2px var(--coin-edge);
  animation-name: coin-flip;
}

.particle--mark .particle__spin {
  font: calc(var(--w) * 0.9) / 1 var(--font-display);
  color: var(--mark);
  animation-name: sway;
}

@keyframes fall {
  0% {
    transform: translate3d(0, 0, 0) rotate(var(--r0));
    opacity: 0;
  }
  8% {
    opacity: var(--particle-opacity);
  }
  90% {
    opacity: var(--particle-opacity);
  }
  100% {
    transform: translate3d(var(--drift), 125vh, 0) rotate(var(--r1));
    opacity: 0;
  }
}

@keyframes flutter {
  from {
    transform: rotateX(0deg) skewX(-6deg) scaleY(1);
  }
  to {
    transform: rotateX(55deg) skewX(8deg) scaleY(0.8);
  }
}

@keyframes coin-flip {
  from {
    transform: scaleX(1);
  }
  to {
    transform: scaleX(0.15);
  }
}

@keyframes sway {
  from {
    transform: translateX(-10px) rotate(-12deg);
  }
  to {
    transform: translateX(10px) rotate(12deg);
  }
}

@keyframes glow-drift-1 {
  to {
    transform: translate3d(14vw, 10vh, 0) scale(1.12);
  }
}

@keyframes glow-drift-2 {
  to {
    transform: translate3d(-12vw, -12vh, 0) scale(0.92);
  }
}

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

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid var(--hairline);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 68px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--heading);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 1.25rem;
}

.brand__mark {
  width: 38px;
  height: 38px;
  transition: transform 0.6s var(--ease);
}

.brand:hover .brand__mark {
  transform: rotateY(180deg);
}

.brand__version {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.75rem;
  padding: 0.1rem 0.45rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--accent-2-text);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.icon-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

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

.icon-btn svg {
  width: 20px;
  height: 20px;
}

.theme-toggle .icon-sun {
  display: none;
}

:root[data-theme="dark"] .theme-toggle .icon-sun {
  display: block;
}

:root[data-theme="dark"] .theme-toggle .icon-moon {
  display: none;
}

/* ---------- Hero ---------- */
.hero {
  padding: clamp(3rem, 9vw, 6.5rem) 0 clamp(2rem, 5vw, 3.5rem);
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-2-text);
  margin-bottom: 1rem;
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: currentColor;
}

.hero h1 {
  font-size: clamp(2.6rem, 8vw, 5rem);
  letter-spacing: -0.01em;
}

.hero h1 .accent {
  color: var(--accent-2-text);
  display: inline-block;
}

.hero__lead {
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
  color: var(--muted);
  max-width: 34ch;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

/* Banknote-shaped showcase */
.showcase {
  position: relative;
  aspect-ratio: 480 / 227;
  transform: rotate(-4deg);
  transition: transform 0.6s var(--ease);
}

.showcase:hover {
  transform: rotate(-1deg) translateY(-4px);
}

.showcase img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 10px;
  box-shadow: var(--shadow-lift);
}

.showcase img:nth-child(1) {
  transform: translate(8%, -14%) rotate(9deg) scale(0.9);
  opacity: 0.85;
}

.showcase__stamp {
  position: absolute;
  right: -12px;
  bottom: -22px;
  width: 92px;
  height: 92px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  text-align: center;
  font: 700 0.8rem/1.1 var(--font-body);
  color: var(--coin-text);
  background: radial-gradient(circle at 35% 30%, var(--sand-soft), var(--coin-fill) 55%, var(--coin-edge));
  box-shadow: var(--shadow), inset 0 0 0 3px var(--coin-edge);
  transform: rotate(10deg);
}

.showcase__stamp strong {
  display: block;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.5rem;
}

/* ---------- Buttons ---------- */
.btn {
  --btn-bg: var(--accent);
  --btn-text: var(--accent-text);
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-height: 48px;
  padding: 0.75rem 1.4rem;
  border: 0;
  border-radius: 999px;
  background: var(--btn-bg);
  color: var(--btn-text);
  font: 700 1rem/1.2 var(--font-body);
  text-decoration: none;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), background-color 0.3s;
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lift);
}

.btn:active {
  transform: translateY(1px);
  box-shadow: var(--shadow);
}

.btn--ghost {
  --btn-bg: var(--surface);
  --btn-text: var(--text);
  box-shadow: inset 0 0 0 1px var(--border), var(--shadow);
}

.btn__coin {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 0.6rem;
  color: var(--coin-text);
  background: radial-gradient(circle at 35% 30%, var(--sand-soft), var(--coin-fill) 55%, var(--coin-edge));
  box-shadow: inset 0 0 0 1.5px var(--coin-edge);
  transition: transform 0.6s var(--ease);
}

.btn:hover .btn__coin {
  transform: rotateY(360deg);
}

.btn[disabled] {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

.ripple {
  position: absolute;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.28;
  transform: scale(0);
  animation: ripple 0.6s var(--ease) forwards;
  pointer-events: none;
}

@keyframes ripple {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* ---------- Stats ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1rem;
  margin-bottom: clamp(2.5rem, 6vw, 4rem);
}

.stat {
  padding: 1.1rem 1.25rem;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--hairline);
  box-shadow: var(--shadow);
}

.stat__num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  color: var(--heading);
  line-height: 1.1;
}

.stat__label {
  color: var(--muted);
  font-size: 0.95rem;
}

/* ---------- Section ---------- */
.section {
  scroll-margin-top: 72px;
  padding: clamp(2.5rem, 6vw, 4.5rem) 0;
}

.section__head {
  max-width: 40rem;
  margin-bottom: 1.75rem;
}

.section__head h2 {
  font-size: clamp(1.8rem, 4.5vw, 2.6rem);
}

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

/* ---------- Quiz card (banknote) ---------- */
.note-card {
  position: relative;
  padding: clamp(1.25rem, 4vw, 2.25rem);
  border-radius: var(--radius);
  background:
    linear-gradient(var(--surface), var(--surface)) padding-box,
    repeating-linear-gradient(135deg, var(--accent-2) 0 6px, transparent 6px 12px) border-box;
  border: 6px solid transparent;
  box-shadow: var(--shadow-lift);
}

.note-card::before {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px dashed var(--border);
  border-radius: calc(var(--radius) - 8px);
  pointer-events: none;
  opacity: 0.6;
}

.note-card__top {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.serial {
  font: 700 0.85rem/1 ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  letter-spacing: 0.14em;
  color: var(--accent-2-text);
}

.wallet {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.8rem 0.35rem 0.4rem;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--hairline);
  font-weight: 700;
}

.wallet .btn__coin {
  width: 26px;
  height: 26px;
}

.wallet.is-bump .btn__coin {
  animation: bump 0.6s var(--ease);
}

@keyframes bump {
  40% {
    transform: scale(1.35) rotateY(180deg);
  }
}

.progress {
  position: relative;
  height: 8px;
  border-radius: 999px;
  background: var(--surface-2);
  overflow: hidden;
  margin-bottom: 1.5rem;
}

.progress__bar {
  position: absolute;
  inset: 0;
  transform-origin: left;
  transform: scaleX(0);
  background: repeating-linear-gradient(90deg, var(--accent) 0 14px, var(--accent-2) 14px 18px);
  transition: transform 0.6s var(--ease);
}

.quiz-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 240px;
  gap: clamp(1rem, 3vw, 2rem);
  align-items: start;
}

.question {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3.4vw, 1.9rem);
  color: var(--heading);
  margin-bottom: 1.25rem;
  min-height: 2.4em;
}

.options {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

.option {
  position: relative;
  overflow: hidden;
  width: 100%;
  min-height: 56px;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.8rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font: 700 1rem/1.3 var(--font-body);
  text-align: left;
  cursor: pointer;
  box-shadow: 0 1px 0 var(--hairline);
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), background-color 0.2s, border-color 0.2s;
}

.option:hover:not([disabled]) {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: var(--accent);
}

.option:active:not([disabled]) {
  transform: translateY(1px);
}

.option__key {
  flex: none;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 0.85rem;
  background: var(--surface-2);
  border: 1px solid var(--hairline);
  color: var(--accent-2-text);
}

.option[disabled] {
  cursor: default;
}

.option.is-correct {
  background: var(--ok-bg);
  border-color: var(--ok);
  color: var(--text);
}

.option.is-correct .option__key {
  background: var(--ok);
  color: var(--surface);
}

.option.is-wrong {
  background: var(--bad-bg);
  border-color: var(--bad);
  animation: shake 0.4s;
}

.option.is-wrong .option__key {
  background: var(--bad);
  color: var(--surface);
}

@keyframes shake {
  25% {
    transform: translateX(-5px);
  }
  75% {
    transform: translateX(5px);
  }
}

.prize {
  text-align: center;
  padding: 1rem;
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  border: 1px solid var(--hairline);
}

.prize__label {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

.prize__value {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--heading);
  line-height: 1;
  margin-bottom: 0.75rem;
}

.prize img {
  margin-inline: auto;
  border-radius: 6px;
  box-shadow: var(--shadow);
  transition: transform 0.5s var(--ease);
}

.prize img.is-new {
  animation: note-in 0.6s var(--ease);
}

@keyframes note-in {
  from {
    transform: translateY(-14px) rotate(-8deg) scale(0.9);
    opacity: 0;
  }
}

.feedback {
  min-height: 1.6em;
  margin: 1rem 0 0;
  font-weight: 700;
}

.feedback.is-ok {
  color: var(--ok);
}

.feedback.is-bad {
  color: var(--bad);
}

.quiz-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 1rem;
}

.result {
  text-align: center;
  padding: 1rem 0;
}

.result h3 {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
}

.result__sum {
  font-family: var(--font-display);
  font-size: clamp(3rem, 12vw, 5rem);
  color: var(--accent-2-text);
  line-height: 1;
  margin: 0.5rem 0 1rem;
}

/* Flying coin micro-effect */
.fly-coin {
  position: fixed;
  z-index: 50;
  width: 30px;
  height: 30px;
  margin: -15px 0 0 -15px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font: 700 0.65rem/1 var(--font-body);
  color: var(--coin-text);
  background: radial-gradient(circle at 35% 30%, var(--sand-soft), var(--coin-fill) 55%, var(--coin-edge));
  box-shadow: inset 0 0 0 2px var(--coin-edge), var(--shadow);
  pointer-events: none;
  animation: fly 0.9s var(--ease) forwards;
}

@keyframes fly {
  0% {
    transform: translate(0, 0) scale(0.6) rotateY(0);
    opacity: 1;
  }
  100% {
    transform: translate(var(--tx), var(--ty)) scale(1) rotateY(720deg);
    opacity: 0.2;
  }
}

/* ---------- Feature cards ---------- */
.features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.feature {
  position: relative;
  padding: 1.4rem 1.25rem;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--hairline);
  box-shadow: var(--shadow);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.feature:hover {
  transform: translateY(-6px) rotate(-0.6deg);
  box-shadow: var(--shadow-lift);
}

.feature__icon {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  margin-bottom: 0.9rem;
  background: var(--surface-2);
  color: var(--accent-2-text);
  border: 1px solid var(--hairline);
}

.feature__icon svg {
  width: 24px;
  height: 24px;
}

.feature h3 {
  font-size: 1.2rem;
}

.feature p {
  color: var(--muted);
  font-size: 0.97rem;
  margin: 0;
}

.server-note {
  margin-top: 1.5rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-sm);
  border: 1px dashed var(--border);
  background: color-mix(in srgb, var(--surface) 85%, transparent);
  color: var(--muted);
}

.server-note code {
  font-size: 0.9em;
  color: var(--text);
}

/* ---------- Footer ---------- */
.site-footer {
  margin-top: 2rem;
  padding: 2rem 0 2.5rem;
  border-top: 1px solid var(--hairline);
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  color: var(--muted);
  font-size: 0.95rem;
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
}

.site-footer p {
  margin: 0;
}

/* ---------- Reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .showcase {
    width: 100%;
    max-width: 420px;
    margin: 1.5rem auto 2rem;
  }

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

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

  .prize {
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
    gap: 0 1rem;
    text-align: left;
  }

  .prize img {
    grid-row: span 2;
    width: 120px;
    margin: 0;
  }

  .prize__value {
    margin: 0;
  }
}

@media (max-width: 560px) {
  .stats {
    grid-template-columns: 1fr;
    gap: 0.6rem;
  }

  .stat {
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
  }

  .options,
  .features {
    grid-template-columns: 1fr;
  }

  .brand__text {
    font-size: 1.05rem;
  }

  .hero__cta .btn {
    flex: 1 1 100%;
  }
}

/* ---------- 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;
  }

  .particle {
    display: none;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}