/* ==========================================================================
   Viktorina — styles
   ========================================================================== */

/* ---------- Tokens ---------- */
:root {
  --accent: #f2b705;
  --on-accent: #14181b;
  --accent-soft: rgba(242, 183, 5, 0.16);

  --bg: #f5f3ec;
  --surface: #ffffff;
  --surface-2: #efece2;
  --text: #14181b;
  --muted: #5d646b;
  --border: rgba(20, 24, 27, 0.12);
  --dot: rgba(20, 24, 27, 0.13);
  --shadow: 0 1px 2px rgba(20, 24, 27, 0.06), 0 8px 24px rgba(20, 24, 27, 0.08);
  --shadow-lift: 0 2px 4px rgba(20, 24, 27, 0.08), 0 18px 40px rgba(20, 24, 27, 0.14);
  --ok: #1f8a4c;
  --bad: #c2352b;

  --font-head: "Barlow Condensed", "Arial Narrow", sans-serif;
  --font-body: "Barlow", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  --radius: 14px;
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);

  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f1215;
    --surface: #171b1f;
    --surface-2: #1f2429;
    --text: #eef0f2;
    --muted: #9aa3ab;
    --border: rgba(238, 240, 242, 0.1);
    --dot: rgba(238, 240, 242, 0.08);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.35);
    --shadow-lift: 0 2px 4px rgba(0, 0, 0, 0.35), 0 18px 40px rgba(0, 0, 0, 0.5);
    --ok: #4cc782;
    --bad: #ff6b5e;
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #0f1215;
  --surface: #171b1f;
  --surface-2: #1f2429;
  --text: #eef0f2;
  --muted: #9aa3ab;
  --border: rgba(238, 240, 242, 0.1);
  --dot: rgba(238, 240, 242, 0.08);
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lift: 0 2px 4px rgba(0, 0, 0, 0.35), 0 18px 40px rgba(0, 0, 0, 0.5);
  --ok: #4cc782;
  --bad: #ff6b5e;
  color-scheme: dark;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 110px;
}

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;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3 {
  font-family: var(--font-head);
  line-height: 1.05;
  margin: 0;
  letter-spacing: 0.01em;
}

h2 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  text-transform: uppercase;
}

h3 {
  font-size: 1.5rem;
}

p {
  margin: 0;
}

a {
  color: inherit;
}

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

.mono {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
}

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

.wrap {
  width: min(1160px, 100% - 32px);
  margin-inline: auto;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

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

main:focus {
  outline: none;
}

.skip-link {
  position: absolute;
  top: 12px;
  left: 16px;
  z-index: 100;
  padding: 10px 16px;
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 600;
  border-radius: 8px;
  text-decoration: none;
  transform: translateY(-160%);
  transition: transform 0.2s var(--ease);
}

.skip-link:focus {
  transform: translateY(0);
}

/* ---------- Live background ---------- */
.backdrop {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
  background-image: radial-gradient(var(--dot) 1.2px, transparent 1.2px);
  background-size: 22px 22px;
}

.backdrop__glow {
  position: absolute;
  top: -22vmax;
  right: -22vmax;
  width: 60vmax;
  height: 60vmax;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(242, 183, 5, 0.38), rgba(242, 183, 5, 0) 65%);
  animation: glow-pulse 7s ease-in-out infinite;
  will-change: transform, opacity;
}

@keyframes glow-pulse {
  0%,
  100% {
    transform: scale(0.9);
    opacity: 0.55;
  }
  50% {
    transform: scale(1.08);
    opacity: 1;
  }
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: var(--accent);
  color: var(--on-accent);
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.4rem;
  transition: transform 0.3s var(--ease);
}

.brand:hover .brand__mark {
  transform: rotate(-8deg) scale(1.06);
}

.brand__name {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.nav {
  display: flex;
  gap: 4px;
  margin-left: auto;
}

.nav a {
  position: relative;
  padding: 6px 12px;
  text-decoration: none;
  font-weight: 500;
  color: var(--muted);
  transition: color 0.2s;
}

.nav a::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 2px;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s var(--ease);
}

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

.nav a:hover::after {
  transform: scaleX(1);
}

.site-header__tools {
  display: flex;
  align-items: center;
  gap: 12px;
}

.clock {
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.theme-toggle {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition: transform 0.2s var(--ease), box-shadow 0.2s;
}

.theme-toggle:hover {
  transform: translateY(-2px) rotate(15deg);
  box-shadow: var(--shadow);
}

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

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

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

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .icon-sun {
    display: none;
  }
  :root:not([data-theme="light"]) .theme-toggle .icon-moon {
    display: block;
  }
}

/* Ticker — the "running line" */
.ticker {
  overflow: hidden;
  background: var(--accent);
  color: var(--on-accent);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.ticker__track {
  display: flex;
  width: max-content;
  animation: ticker 40s linear infinite;
}

.ticker__track span {
  padding: 6px 28px;
  white-space: nowrap;
}

.ticker__track span::before {
  content: "◆";
  margin-right: 28px;
  opacity: 0.55;
}

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

/* ---------- Buttons ---------- */
.btn {
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 22px;
  border: 1px solid transparent;
  border-radius: 10px;
  font: 600 1rem/1 var(--font-body);
  text-decoration: none;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), background-color 0.2s;
}

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

.btn:active {
  transform: translateY(1px);
  box-shadow: var(--shadow);
  transition-duration: 0.06s;
}

.btn__arrow {
  display: inline-block;
  font-family: var(--font-mono);
  transition: transform 0.25s var(--ease);
}

.btn:hover .btn__arrow {
  transform: translate(3px, -3px);
}

.btn--primary {
  background: var(--accent);
  color: var(--on-accent);
}

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

.btn--ghost:hover {
  border-color: var(--accent);
}

.btn--small {
  padding: 9px 14px;
  font-size: 0.9rem;
}

.ripple {
  position: absolute;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.25;
  transform: scale(0);
  pointer-events: none;
  animation: ripple 0.6s var(--ease) forwards;
}

@keyframes ripple {
  to {
    transform: scale(1);
    opacity: 0;
  }
}

/* ---------- Hero ---------- */
.hero {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 48px;
  align-items: end;
  padding-block: clamp(56px, 10vw, 120px) 48px;
}

.hero > *,
.game > *,
.submit > * {
  min-width: 0;
}

.eyebrow {
  color: var(--muted);
  margin-bottom: 12px;
}

.hero__title {
  font-size: clamp(3.5rem, 9vw, 8.5rem);
  font-weight: 800;
  white-space: nowrap;
  text-transform: uppercase;
  line-height: 0.85;
  letter-spacing: -0.01em;
}

.hero__title::after {
  content: "?";
  display: inline-block;
  color: var(--accent);
  margin-left: 0.04em;
  animation: wobble 3.2s ease-in-out infinite;
  transform-origin: 50% 80%;
}

@keyframes wobble {
  0%,
  70%,
  100% {
    transform: rotate(0);
  }
  78% {
    transform: rotate(12deg);
  }
  86% {
    transform: rotate(-8deg);
  }
  93% {
    transform: rotate(4deg);
  }
}

.hero__lead {
  max-width: 34rem;
  margin-top: 20px;
  font-size: 1.2rem;
  color: var(--muted);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.stat {
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.stat:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
}

.stat__value {
  display: block;
  font-size: 2.4rem;
  font-weight: 500;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}

.stat:first-child {
  background: var(--accent);
  color: var(--on-accent);
  border-color: transparent;
}

.stat:first-child .stat__label {
  color: inherit;
  opacity: 0.8;
}

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

/* ---------- Sections ---------- */
.section {
  padding-block: clamp(56px, 8vw, 96px);
}

.section__head {
  margin-bottom: 32px;
}

.section__lead {
  max-width: 44rem;
  margin-top: 12px;
  color: var(--muted);
}

.card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: clamp(20px, 3vw, 32px);
}

/* ---------- Game ---------- */
.game {
  display: grid;
  grid-template-columns: 1.7fr 1fr;
  gap: 20px;
  align-items: start;
}

.quiz__top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--muted);
  text-transform: uppercase;
}

.coin {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 500;
}

.coin::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--on-accent);
  opacity: 0.6;
}

.coin.is-bump {
  animation: bump 0.4s var(--ease);
}

@keyframes bump {
  50% {
    transform: scale(1.18);
  }
}

.timer {
  height: 6px;
  margin-top: 20px;
  border-radius: 999px;
  background: var(--surface-2);
  overflow: hidden;
}

.timer__bar {
  height: 100%;
  background: var(--accent);
  transform-origin: left;
  transform: scaleX(1);
}

.timer__bar.is-low {
  background: var(--bad);
}

.quiz__time {
  margin-top: 6px;
  color: var(--muted);
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.quiz__question {
  margin: 12px 0 28px;
  font-size: clamp(1.9rem, 4.2vw, 2.8rem);
  font-weight: 700;
  min-height: 2.1em;
}

.quiz__question.is-in {
  animation: slide-in 0.45s var(--ease);
}

@keyframes slide-in {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
}

.quiz__form,
.chat__form {
  display: flex;
  gap: 10px;
}

.field {
  flex: 1;
  min-width: 0;
  width: 100%;
  padding: 13px 16px;
  font: 500 1rem var(--font-body);
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

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

.field:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.field.is-shake {
  animation: shake 0.35s;
  border-color: var(--bad);
}

@keyframes shake {
  25% {
    transform: translateX(-6px);
  }
  75% {
    transform: translateX(6px);
  }
}

.quiz__feedback {
  min-height: 1.6em;
  margin-top: 14px;
  font-weight: 600;
}

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

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

.quiz__footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px dashed var(--border);
}

/* Player */
.player__head {
  display: flex;
  align-items: center;
  gap: 14px;
}

.avatar {
  flex: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
}

.avatar--lg {
  width: 64px;
  height: 64px;
}

.player__name {
  font-family: var(--font-head);
  font-size: 1.7rem;
  font-weight: 700;
  line-height: 1;
}

.player__nick {
  margin-top: 4px;
}

.player__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 24px 0 0;
}

.player__stats div {
  padding: 12px 14px;
  background: var(--surface-2);
  border-radius: 10px;
}

.player__stats dd {
  margin: 2px 0 0;
}

.player__big {
  font-size: 1.8rem;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

.level {
  margin-top: 18px;
}

.level__track {
  height: 8px;
  border-radius: 999px;
  background: var(--surface-2);
  overflow: hidden;
}

.level__bar {
  height: 100%;
  background: var(--accent);
  transform-origin: left;
  transform: scaleX(0);
  transition: transform 0.6s var(--ease);
}

.level__hint {
  margin-top: 6px;
}

.player__tools {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.password {
  min-height: 1.6em;
  margin-top: 12px;
  word-break: break-all;
}

/* ---------- Add question ---------- */
.submit {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-items: start;
}

.new-question {
  display: grid;
  gap: 16px;
  justify-items: start;
}

.form-row {
  display: grid;
  gap: 6px;
  width: 100%;
}

.form-row label {
  font-weight: 600;
}

.form-error {
  min-height: 1.4em;
  color: var(--bad);
  font-size: 0.95rem;
}

.queue__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 14px;
}

.queue__list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.queue__item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 12px;
  align-items: center;
  padding: 12px 14px;
  background: var(--surface-2);
  border-radius: 10px;
  animation: slide-in 0.4s var(--ease);
}

.queue__item p {
  font-weight: 600;
  overflow-wrap: anywhere;
}

.queue__meta {
  grid-column: 1;
}

.queue__item .btn {
  grid-row: 1 / span 2;
  grid-column: 2;
}

.queue__empty[hidden] {
  display: none;
}

/* ---------- Levels ---------- */
.levels {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.level-card {
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), border-color 0.25s;
}

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

.level-card__num {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 6px;
  background: var(--accent-soft);
  color: var(--text);
  margin-bottom: 14px;
}

.level-card h3 {
  margin-bottom: 8px;
  text-transform: uppercase;
}

.level-card p {
  color: var(--muted);
  font-size: 0.98rem;
}

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

/* ---------- Chat ---------- */
.chat__list {
  display: grid;
  gap: 14px;
  max-height: 360px;
  overflow-y: auto;
  margin: 0 0 20px;
  padding: 0 4px 0 0;
  list-style: none;
}

.msg {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  animation: slide-in 0.35s var(--ease);
}

.msg__bubble {
  max-width: 75%;
  padding: 10px 14px;
  background: var(--surface-2);
  border-radius: 14px 14px 14px 4px;
}

.msg__bubble p {
  overflow-wrap: anywhere;
}

.msg__time {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 0.7rem;
}

.msg--me {
  flex-direction: row-reverse;
}

.msg--me .msg__bubble {
  background: var(--accent);
  color: var(--on-accent);
  border-radius: 14px 14px 4px 14px;
}

.msg--me .msg__time {
  color: inherit;
  opacity: 0.7;
  text-align: right;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding-block: 28px;
}

.site-footer__inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.site-footer a {
  text-decoration: none;
  transition: color 0.2s;
}

.site-footer a:hover {
  color: var(--accent);
}

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

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

/* Keep hover lift working on revealed cards */
.js .reveal.is-visible.level-card:hover,
.js .reveal.is-visible.stat:hover {
  transform: translateY(-6px);
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .hero,
  .game,
  .submit {
    grid-template-columns: 1fr;
  }

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

  .hero__title {
    font-size: clamp(3.5rem, 15vw, 8.5rem);
  }
}

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

  .site-header__tools {
    margin-left: auto;
  }
}

@media (max-width: 480px) {
  .levels {
    grid-template-columns: 1fr;
  }

  .quiz__form,
  .chat__form {
    flex-direction: column;
  }

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

  .stat__value {
    font-size: 2rem;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

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

  .ticker__track {
    animation: none;
  }
}