/* NomReg landing — Cut the Rope / Om Nom vibe */

:root {
  --green-dark: #2d6b3a;
  --green-mid: #4caf50;
  --green-light: #8bc34a;
  --grass: #6ab04c;
  --sky-top: #87ceeb;
  --sky-bottom: #b8e994;
  --candy-red: #e74c3c;
  --candy-orange: #f39c12;
  --wood: #5d4037;
  --wood-light: #8d6e63;
  --cream: #fff8e7;
  --cream-dark: #f5e6c8;
  --shadow: rgba(45, 60, 30, 0.35);
  --card-bg: rgba(255, 248, 231, 0.92);
  --header-h: 72px;
  --radius: 20px;
  --radius-sm: 12px;
  --font: "Nunito", system-ui, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  color: var(--wood);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.5;
}

main,
.footer {
  position: relative;
  z-index: 1;
}

/* Language toggle (pure CSS) */
.lang-input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

#lang-ru:checked ~ * .lang-en,
#lang-ru:checked ~ * .lang-cu,
#lang-en:checked ~ * .lang-ru,
#lang-en:checked ~ * .lang-cu,
#lang-cu:checked ~ * .lang-ru,
#lang-cu:checked ~ * .lang-en {
  display: none !important;
}

#lang-ru:checked ~ .header .lang-switch label[for="lang-ru"],
#lang-en:checked ~ .header .lang-switch label[for="lang-en"],
#lang-cu:checked ~ .header .lang-switch label[for="lang-cu"] {
  background: var(--green-mid);
  color: #fff;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.15);
}

#lang-cu:checked ~ * .lang-cu {
  font-family: "Cormorant Garamond", "Times New Roman", serif;
  letter-spacing: 0.02em;
}

#lang-cu:checked ~ .header .lang-cu,
#lang-cu:checked ~ .footer .lang-cu {
  font-family: var(--font);
}

/* Full-screen game background */
.page-bg {
  position: fixed;
  inset: 0;
  z-index: -2;
  background: url("back.png") center center / cover no-repeat fixed;
}

.page-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(135, 206, 235, 0.25) 0%,
    rgba(184, 233, 148, 0.15) 40%,
    rgba(45, 107, 58, 0.2) 100%
  );
  pointer-events: none;
}

/* Side candies & lollipops */
.candy-decor {
  position: fixed;
  top: 0;
  bottom: 0;
  width: clamp(72px, 10vw, 140px);
  pointer-events: none;
  z-index: 0;
  display: none;
}

.candy-decor--left {
  left: max(0px, calc((100vw - 1100px) / 2 - 80px));
}

.candy-decor--right {
  right: max(0px, calc((100vw - 1100px) / 2 - 80px));
}

.candy {
  position: absolute;
  left: 50%;
  top: var(--top, 50%);
  transform: translateX(-50%) rotate(var(--rot, 0deg));
  filter: drop-shadow(2px 4px 6px rgba(0, 0, 0, 0.25));
  animation: candy-float 4s ease-in-out infinite;
  animation-delay: var(--delay, 0s);
}

.candy-decor--right .candy {
  animation-name: candy-float-right;
}

@keyframes candy-float {
  0%, 100% { transform: translateX(-50%) translateY(0) rotate(var(--rot, 0deg)); }
  50% { transform: translateX(-50%) translateY(-10px) rotate(calc(var(--rot, 0deg) + 6deg)); }
}

@keyframes candy-float-right {
  0%, 100% { transform: translateX(-50%) translateY(0) rotate(var(--rot, 0deg)); }
  50% { transform: translateX(-50%) translateY(-12px) rotate(calc(var(--rot, 0deg) - 5deg)); }
}

/* Lollipop */
.candy-lollipop {
  width: 44px;
  height: 88px;
}

.candy-lollipop--sm {
  width: 32px;
  height: 64px;
}

.candy-lollipop::before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 8px;
  height: 48px;
  z-index: 0;
  background: linear-gradient(90deg, #d4a574, #f5deb3 45%, #c49a6c);
  border-radius: 4px;
  box-shadow: inset -1px 0 2px rgba(0, 0, 0, 0.15);
}

.candy-lollipop--sm::before {
  width: 6px;
  height: 36px;
}

.candy-lollipop::after {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 32% 28%, rgba(255, 255, 255, 0.65) 0%, transparent 45%),
    radial-gradient(circle at 70% 75%, rgba(0, 0, 0, 0.12) 0%, transparent 40%),
    var(--c, #e74c3c);
  border: 3px solid rgba(255, 255, 255, 0.35);
  box-shadow: inset 0 -4px 8px rgba(0, 0, 0, 0.15);
}

.candy-lollipop--sm::after {
  width: 32px;
  height: 32px;
}

/* Wrapped candy */
.candy-wrapped {
  width: 52px;
  height: 28px;
}

.candy-wrapped::before {
  content: "";
  position: absolute;
  inset: 4px 10px;
  background:
    radial-gradient(ellipse at 30% 40%, rgba(255, 255, 255, 0.5) 0%, transparent 50%),
    var(--c, #f39c12);
  border-radius: 40% / 50%;
  box-shadow: inset 0 -3px 6px rgba(0, 0, 0, 0.2);
}

.candy-wrapped::after {
  content: "";
  position: absolute;
  top: 50%;
  left: -6px;
  right: -6px;
  height: 14px;
  transform: translateY(-50%);
  background: repeating-linear-gradient(
    -55deg,
    rgba(255, 255, 255, 0.9) 0 3px,
    var(--c, #f39c12) 3px 6px
  );
  border-radius: 4px;
  opacity: 0.85;
  z-index: -1;
}

/* Round candy */
.candy-round {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 25%, rgba(255, 255, 255, 0.7) 0%, transparent 40%),
    radial-gradient(circle at 75% 80%, rgba(0, 0, 0, 0.15) 0%, transparent 35%),
    var(--c, #2ecc71);
  border: 2px solid rgba(255, 255, 255, 0.4);
  box-shadow: inset 0 -3px 6px rgba(0, 0, 0, 0.2);
}

.candy-round--sm {
  width: 24px;
  height: 24px;
}

@media (min-width: 900px) {
  .candy-decor {
    display: block;
  }
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 1.5rem;
  min-height: var(--header-h);
  background: rgba(255, 248, 231, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 4px solid var(--green-mid);
  box-shadow: 0 4px 20px var(--shadow);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--green-dark);
  font-weight: 900;
  font-size: 1.35rem;
}

.logo img {
  filter: drop-shadow(0 3px 6px var(--shadow));
}

.nav {
  display: none;
  gap: 1.25rem;
}

.nav a {
  color: var(--wood);
  text-decoration: none;
  font-weight: 700;
  transition: color 0.2s;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.lang-switch {
  display: flex;
  background: var(--cream-dark);
  border-radius: 999px;
  padding: 3px;
  border: 2px solid var(--wood-light);
}

.lang-btn {
  padding: 0.35rem 0.55rem;
  font-size: 0.75rem;
  font-weight: 800;
  cursor: pointer;
  border-radius: 999px;
  color: var(--wood);
  transition: background 0.2s, color 0.2s, transform 0.15s;
}

.lang-btn:hover {
  transform: scale(1.08);
}

.lang-btn:active {
  transform: scale(0.95);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.25rem;
  border-radius: 999px;
  font-family: inherit;
  font-weight: 800;
  font-size: 0.95rem;
  text-decoration: none;
  border: 3px solid transparent;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-2px);
}

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

.btn-primary {
  background: linear-gradient(180deg, var(--green-light), var(--green-mid));
  color: #fff;
  border-color: var(--green-dark);
  box-shadow: 0 4px 0 var(--green-dark), 0 6px 16px var(--shadow);
}

.btn-cta {
  background: linear-gradient(180deg, #ff6b6b, var(--candy-red));
  color: #fff;
  border-color: #c0392b;
  box-shadow: 0 5px 0 #922b21, 0 8px 20px var(--shadow);
  font-size: 1.05rem;
  padding: 0.85rem 1.75rem;
}

.btn-ghost {
  background: var(--card-bg);
  color: var(--green-dark);
  border-color: var(--green-mid);
  box-shadow: 0 3px 0 var(--green-mid);
}

.btn-support {
  background: linear-gradient(180deg, #74b9ff, #0984e3);
  color: #fff;
  border-color: #0652dd;
  box-shadow: 0 4px 0 #0652dd;
}

/* Hero */
.hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
  max-width: 1100px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 3rem;
}

.hero-badge {
  display: inline-block;
  background: var(--card-bg);
  border: 2px solid var(--candy-orange);
  border-radius: 999px;
  padding: 0.35rem 1rem;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--candy-orange);
  margin-bottom: 1rem;
  box-shadow: 0 3px 0 var(--candy-orange);
  transition: transform 0.25s, box-shadow 0.25s;
}

.hero-badge:hover {
  transform: scale(1.04) rotate(-1deg);
  box-shadow: 0 5px 0 var(--candy-orange), 0 8px 20px var(--shadow);
}

.hero h1 {
  font-size: clamp(1.75rem, 5vw, 2.75rem);
  font-weight: 900;
  color: var(--green-dark);
  line-height: 1.15;
  text-shadow: 2px 2px 0 rgba(255, 255, 255, 0.6);
  margin-bottom: 1rem;
}

.hero-lead {
  font-size: 1.05rem;
  max-width: 32rem;
  margin-bottom: 1.5rem;
  font-weight: 600;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero-mascot {
  display: flex;
  justify-content: center;
  align-items: flex-end;
}

.mascot-dance {
  max-width: min(320px, 85vw);
  height: auto;
  filter: drop-shadow(0 12px 24px var(--shadow));
  animation: bounce 2.5s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* Sections */
.section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
}

.section h2 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 900;
  color: var(--green-dark);
  text-align: center;
  margin-bottom: 0.5rem;
}

.section-sub {
  text-align: center;
  font-weight: 600;
  margin-bottom: 2rem;
  opacity: 0.9;
}

/* Feature cards — interactive flip */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  perspective: 1200px;
}

.card-interactive {
  display: block;
  min-height: 200px;
  cursor: pointer;
  border-radius: var(--radius);
  transition: transform 0.35s cubic-bezier(0.34, 1.4, 0.64, 1), filter 0.25s;
  -webkit-tap-highlight-color: transparent;
}

.card-interactive:hover {
  transform: translateY(-8px) rotateX(4deg) rotateZ(-0.5deg);
  filter: brightness(1.03);
}

.card-interactive:active {
  transform: translateY(-2px) scale(0.98);
}

.card-check {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.card {
  background: transparent;
  border: none;
  padding: 0;
  box-shadow: none;
  position: relative;
}

.card-inner {
  position: relative;
  width: 100%;
  min-height: 200px;
  transform-style: preserve-3d;
  transition: transform 0.65s cubic-bezier(0.4, 0.2, 0.2, 1);
}

.card-check:checked ~ .card-inner {
  transform: rotateY(180deg);
}

.card-front,
.card-back {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: var(--radius);
  padding: 1.25rem;
  background: var(--card-bg);
  border: 3px solid var(--wood-light);
  box-shadow:
    0 6px 0 var(--wood-light),
    0 10px 30px var(--shadow);
  overflow: hidden;
}

.card-back {
  transform: rotateY(180deg);
  display: flex;
  align-items: center;
  background: linear-gradient(145deg, #fff8e7 0%, #e8f5e9 100%);
}

.card-buy .card-front,
.card-buy .card-back {
  border-color: var(--candy-red);
  box-shadow: 0 6px 0 #c0392b, 0 10px 30px var(--shadow);
}

.card-crypto .card-front,
.card-crypto .card-back {
  border-color: var(--candy-orange);
  box-shadow: 0 6px 0 #d68910, 0 10px 30px var(--shadow);
}

.card-ref .card-front,
.card-ref .card-back {
  border-color: var(--green-mid);
  box-shadow: 0 6px 0 var(--green-dark), 0 10px 30px var(--shadow);
}

.card h3 {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--green-dark);
  margin-bottom: 0.5rem;
}

.card-teaser {
  font-size: 0.95rem;
  font-weight: 600;
  opacity: 0.85;
}

.card-back p,
.card-back .pay-list {
  font-size: 0.92rem;
  font-weight: 600;
}

.card-emoji {
  font-size: 2rem;
  display: block;
  margin-bottom: 0.5rem;
  transition: transform 0.3s;
}

.card-interactive:hover .card-emoji {
  transform: scale(1.2) rotate(-8deg);
}

.card-mascot {
  position: absolute;
  right: -8px;
  bottom: -8px;
  width: 90px;
  height: auto;
  opacity: 0.95;
  pointer-events: none;
  transition: transform 0.35s;
}

.card-interactive:hover .card-mascot {
  transform: scale(1.08) rotate(5deg);
}

.card-mascot-gif {
  width: 100px;
}

.card-ref .card-mascot {
  width: 80px;
}

.pay-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.pay-list li {
  padding: 0.35rem 0;
}

.pay-list strong {
  color: var(--green-dark);
}

/* Steps */
.steps {
  padding-top: 1rem;
}

.steps-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
  background: var(--card-bg);
  border: 3px solid var(--green-mid);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: 0 8px 0 var(--green-dark), 0 16px 40px var(--shadow);
}

.steps h2 {
  text-align: left;
  margin-bottom: 1rem;
}

.steps-list {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.step-tile {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  padding: 0.85rem 1rem;
  background: rgba(139, 195, 74, 0.12);
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  font-weight: 700;
  cursor: default;
  transition:
    transform 0.25s cubic-bezier(0.34, 1.4, 0.64, 1),
    border-color 0.2s,
    box-shadow 0.2s,
    background 0.2s;
}

.step-tile:hover {
  transform: translateX(8px) scale(1.02);
  border-color: var(--green-mid);
  background: rgba(139, 195, 74, 0.22);
  box-shadow: 4px 4px 0 var(--green-mid);
}

.step-num {
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(180deg, var(--green-light), var(--green-mid));
  color: #fff;
  border-radius: 50%;
  font-weight: 900;
  box-shadow: 0 3px 0 var(--green-dark);
  transition: transform 0.25s;
}

.step-tile:hover .step-num {
  transform: rotate(-12deg) scale(1.1);
}

.step-body {
  flex: 1;
  padding-top: 0.15rem;
}

.steps-list code {
  background: rgba(76, 175, 80, 0.2);
  padding: 0.15rem 0.4rem;
  border-radius: 6px;
  font-family: ui-monospace, monospace;
  font-size: 0.9em;
}

.steps-mascot {
  text-align: center;
}

.steps-mascot img {
  max-width: 220px;
  filter: drop-shadow(0 8px 16px var(--shadow));
}

/* Prices */
.prices-panel {
  background: var(--card-bg);
  border: 3px solid var(--green-mid);
  border-radius: var(--radius);
  box-shadow: 0 8px 0 var(--green-dark), 0 16px 40px var(--shadow);
  overflow: hidden;
}

.prices-scroll {
  max-height: 420px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--green-mid) var(--cream-dark);
}

.prices-table {
  width: 100%;
  border-collapse: collapse;
  font-weight: 700;
}

.prices-table th,
.prices-table td {
  padding: 0.65rem 1rem;
  text-align: left;
  border-bottom: 1px solid rgba(93, 64, 55, 0.12);
}

.prices-table thead {
  position: sticky;
  top: 0;
  background: var(--green-mid);
  color: #fff;
  z-index: 1;
}

.prices-table tbody tr {
  transition: transform 0.2s, background 0.2s, box-shadow 0.2s;
}

.prices-table tbody tr:hover {
  background: rgba(139, 195, 74, 0.22);
  transform: scale(1.01);
  box-shadow: inset 4px 0 0 var(--green-mid);
}

.prices-table tbody tr:active {
  transform: scale(0.995);
}

.prices-table td:first-child {
  color: var(--green-dark);
  font-weight: 800;
}

.prices-note {
  text-align: center;
  margin-top: 1rem;
  font-weight: 600;
  font-size: 0.9rem;
}

/* Support — expandable */
.support-interactive {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  text-align: center;
  background: var(--card-bg);
  border: 3px solid #74b9ff;
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: 0 8px 0 #0984e3, 0 16px 40px var(--shadow);
  cursor: pointer;
  transition: transform 0.3s, box-shadow 0.3s;
  -webkit-tap-highlight-color: transparent;
}

.support-interactive:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 0 #0984e3, 0 20px 44px var(--shadow);
}

.support-check {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.support-mascot {
  filter: drop-shadow(0 6px 12px var(--shadow));
  transition: transform 0.4s cubic-bezier(0.34, 1.5, 0.64, 1);
}

.support-interactive:hover .support-mascot {
  transform: rotate(-6deg) scale(1.05);
}

.support-check:checked ~ .support-mascot {
  transform: scale(1.15) rotate(8deg);
}

.support-interactive h2 {
  text-align: center;
  margin-bottom: 0.5rem;
}

.support-short {
  font-weight: 700;
  color: #0984e3;
  margin-bottom: 0.5rem;
}

.support-full {
  font-weight: 600;
  max-width: 28rem;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  margin-bottom: 0;
  transition: max-height 0.45s ease, opacity 0.35s, margin 0.35s;
}

.support-check:checked ~ .support-body .support-full {
  max-height: 8rem;
  opacity: 1;
  margin-bottom: 1.25rem;
}

.support-check:checked ~ .support-body .support-short {
  display: none;
}

/* Footer */
.footer {
  text-align: center;
  padding: 2rem 1.5rem 2.5rem;
  background: rgba(45, 107, 58, 0.85);
  color: var(--cream);
  margin-top: 2rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem 1.5rem;
  margin-bottom: 1rem;
}

.footer-links a {
  color: var(--cream);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s;
}

.footer-links a:hover {
  border-bottom-color: var(--cream);
}

.footer-copy {
  font-size: 0.85rem;
  opacity: 0.85;
  font-weight: 600;
}

/* Responsive */
@media (min-width: 768px) {
  .nav {
    display: flex;
  }

  .hero {
    grid-template-columns: 1.1fr 0.9fr;
    padding-top: 3rem;
  }

  .hero-mascot {
    justify-content: flex-end;
  }

  .steps-inner {
    grid-template-columns: 1.2fr 0.8fr;
  }

  .steps h2 {
    text-align: left;
  }

  .support-interactive {
    flex-direction: row;
    text-align: left;
  }

  .support-interactive h2 {
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }

  .card-interactive:hover {
    transform: translateY(-4px);
  }
}

@media (max-width: 520px) {
  .header-actions .btn-primary {
    padding: 0.65rem 0.85rem;
    font-size: 0.85rem;
  }

  .nav {
    display: none;
  }
}