:root {
  --bg-0: #070d18;
  --bg-1: #0c1526;
  --bg-2: #111d35;
  --card-bg: rgba(18, 28, 48, 0.72);
  --card-border: rgba(120, 200, 170, 0.18);
  --text: #e7eefb;
  --text-dim: #aebacd;
  --text-muted: #7e8aa0;
  --accent: #22e39a;
  --accent-2: #18c98a;
  --accent-glow: rgba(34, 227, 154, 0.45);
  --warning: #ffd56a;
  --danger: #ff6b6b;
  --radius: 18px;
  --shadow-card: 0 30px 80px -20px rgba(0, 0, 0, 0.7), 0 0 0 1px rgba(255, 255, 255, 0.02) inset;
}

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

html,
body {
  height: 100%;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Be Vietnam Pro', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  color: var(--text);
  background: var(--bg-0);
  line-height: 1.55;
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: clamp(16px, 4vw, 32px);
  position: relative;
  overflow-x: hidden;
}

/* Ambient animated background */
.bg {
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(ellipse at 20% 10%, rgba(34, 227, 154, 0.18), transparent 55%),
    radial-gradient(ellipse at 85% 90%, rgba(88, 120, 255, 0.18), transparent 55%),
    radial-gradient(ellipse at 50% 50%, var(--bg-1), var(--bg-0) 70%);
}

.bg::before {
  content: "";
  position: absolute;
  inset: -20%;
  background-image:
    radial-gradient(circle at 25% 30%, rgba(34, 227, 154, 0.08) 0, transparent 40%),
    radial-gradient(circle at 75% 70%, rgba(120, 180, 255, 0.08) 0, transparent 40%);
  filter: blur(40px);
  animation: drift 18s ease-in-out infinite alternate;
}

@keyframes drift {
  0%   { transform: translate3d(0, 0, 0) rotate(0deg); }
  100% { transform: translate3d(2%, -3%, 0) rotate(6deg); }
}

/* Subtle grid overlay */
.grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
  pointer-events: none;
}

/* Card */
.card {
  width: 100%;
  max-width: 420px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  backdrop-filter: blur(22px) saturate(140%);
  -webkit-backdrop-filter: blur(22px) saturate(140%);
  box-shadow: var(--shadow-card);
  padding: clamp(20px, 5vw, 32px);
  position: relative;
  overflow: hidden;
  text-align: center;
  animation: fadeUp 0.7s cubic-bezier(.2, .8, .2, 1) both;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* Top highlight line */
.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.6;
}

.badge-18 {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--warning);
  background: rgba(255, 213, 106, 0.08);
  border: 1px solid rgba(255, 213, 106, 0.25);
  border-radius: 999px;
  margin-bottom: 12px;
}

.badge-18 .dot {
  position: relative;
  width: 6px;
  height: 6px;
  background: var(--warning);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--warning);
  animation: pulse 1.6s ease-in-out infinite;
}

.badge-18 .dot::after {
  content: "";
  position: absolute;
  inset: -5px;
  border-radius: 50%;
  border: 1.5px solid var(--warning);
  animation: ripple 1.6s ease-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.55; transform: scale(0.85); }
}

@keyframes ripple {
  0%   { opacity: 0.8; transform: scale(0.6); }
  100% { opacity: 0;   transform: scale(2.2); }
}

h1 {
  font-size: clamp(19px, 5vw, 24px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.01em;
  background: linear-gradient(135deg, var(--accent) 0%, #7df5c6 60%, #b7ffe1 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 10px;
  text-wrap: balance;
}

/* --- Animated Gift icon --- */
.gift-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  margin: 0 auto 12px;
  position: relative;
}

.gift-wrap .halo {
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 65%);
  filter: blur(10px);
  animation: haloPulse 2.6s ease-in-out infinite;
}

@keyframes haloPulse {
  0%, 100% { opacity: 0.55; transform: scale(0.9); }
  50%      { opacity: 0.95; transform: scale(1.08); }
}

.gift-svg {
  width: 54px;
  height: 54px;
  position: relative;
  z-index: 1;
  animation: giftBounce 2.4s cubic-bezier(.3, .8, .3, 1) infinite;
  filter: drop-shadow(0 6px 16px rgba(34, 227, 154, 0.4));
}

@keyframes giftBounce {
  0%, 100% { transform: translateY(0) rotate(-2deg); }
  25%      { transform: translateY(-4px) rotate(2deg); }
  50%      { transform: translateY(-7px) rotate(-1deg); }
  75%      { transform: translateY(-3px) rotate(1deg); }
}

.gift-svg .box-body {
  fill: url(#giftBox);
}

.gift-svg .box-lid {
  fill: url(#giftLid);
  transform-origin: 32px 22px;
  animation: lidJiggle 2.4s ease-in-out infinite;
}

@keyframes lidJiggle {
  0%, 100% { transform: rotate(0deg) translateY(0); }
  50%      { transform: rotate(-2deg) translateY(-1px); }
}

.gift-svg .ribbon-v,
.gift-svg .ribbon-h {
  fill: #ffd56a;
}

.gift-svg .bow-left,
.gift-svg .bow-right {
  fill: #ffd56a;
  transform-origin: 32px 20px;
  animation: bowWiggle 2.4s ease-in-out infinite;
}

.gift-svg .bow-right {
  animation-delay: .1s;
}

@keyframes bowWiggle {
  0%, 100% { transform: scale(1) rotate(0deg); }
  50%      { transform: scale(1.08) rotate(3deg); }
}

/* Sparkles floating around gift */
.sparkle {
  position: absolute;
  width: 8px;
  height: 8px;
  background: linear-gradient(135deg, #fff, var(--accent));
  clip-path: polygon(50% 0, 60% 40%, 100% 50%, 60% 60%, 50% 100%, 40% 60%, 0 50%, 40% 40%);
  opacity: 0;
  animation: sparkleFloat 3s ease-in-out infinite;
  filter: drop-shadow(0 0 4px var(--accent-glow));
}

.sparkle.s1 { top: 4px;    left: 10px;  animation-delay: 0s;   }
.sparkle.s2 { top: 14px;   right: 6px;  animation-delay: .7s;  width: 6px; height: 6px; }
.sparkle.s3 { bottom: 8px; left: 4px;   animation-delay: 1.4s; width: 5px; height: 5px; }
.sparkle.s4 { bottom: 12px; right: 12px; animation-delay: 2.1s; }

@keyframes sparkleFloat {
  0%, 100% { opacity: 0; transform: scale(0.4) rotate(0deg); }
  40%      { opacity: 1; transform: scale(1)   rotate(90deg); }
  60%      { opacity: 1; transform: scale(1)   rotate(180deg); }
}

.intro {
  color: var(--text-dim);
  font-size: 14px;
  margin-bottom: 18px;
  line-height: 1.6;
}

.intro strong {
  color: var(--warning);
  font-weight: 600;
}

/* Checkbox */
.check {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  cursor: pointer;
  user-select: none;
  text-align: left;
  transition: border-color .2s ease, background .2s ease, transform .1s ease;
  margin-bottom: 14px;
}

.check:hover {
  border-color: rgba(34, 227, 154, 0.35);
  background: rgba(34, 227, 154, 0.04);
}

.check:active {
  transform: scale(0.995);
}

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

.box {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  border-radius: 7px;
  border: 2px solid rgba(255, 255, 255, 0.25);
  display: grid;
  place-items: center;
  transition: all .2s ease;
  background: rgba(0, 0, 0, 0.2);
}

.box svg {
  width: 14px;
  height: 14px;
  stroke: #081423;
  stroke-width: 3.5;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 20;
  stroke-dashoffset: 20;
  transition: stroke-dashoffset .25s ease .05s;
}

.check input:checked + .box {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(34, 227, 154, 0.15), 0 0 20px var(--accent-glow);
}

.check input:checked + .box svg {
  stroke-dashoffset: 0;
}

.check input:focus-visible + .box {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.check-label {
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
}

.check.checked {
  border-color: rgba(34, 227, 154, 0.5);
  background: rgba(34, 227, 154, 0.08);
}

/* Confetti canvas */
#confetti {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 50;
}

/* --- Loading overlay --- */
.loader {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(7, 13, 24, 0.78);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s ease;
}

.loader.show {
  opacity: 1;
  pointer-events: auto;
}

.loader-box {
  width: 100%;
  max-width: 340px;
  padding: 26px 22px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  text-align: center;
  box-shadow: var(--shadow-card);
  transform: translateY(12px) scale(0.96);
  transition: transform .35s cubic-bezier(.2, .8, .2, 1);
}

.loader.show .loader-box {
  transform: translateY(0) scale(1);
}

.loader-spinner {
  width: 44px;
  height: 44px;
  margin: 0 auto 14px;
  border: 3px solid rgba(34, 227, 154, 0.15);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}

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

.loader-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}

.loader-status {
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 16px;
  min-height: 18px;
  transition: opacity .2s ease;
}

.progress {
  position: relative;
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 10px;
}

.progress-fill {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), #7df5c6, var(--accent));
  background-size: 200% 100%;
  border-radius: 999px;
  box-shadow: 0 0 12px var(--accent-glow);
  transition: width .15s ease;
  animation: stripes 1.2s linear infinite;
}

@keyframes stripes {
  0%   { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}

.progress-fill::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 30%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.5), transparent);
  animation: progressShine 1.4s ease-in-out infinite;
}

@keyframes progressShine {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(250%); }
}

.progress-percent {
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.02em;
}

/* Button */
.btn {
  width: 100%;
  padding: 14px 22px;
  border: none;
  border-radius: 999px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #062014;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  cursor: pointer;
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: transform .15s ease, box-shadow .25s ease, filter .25s ease;
  box-shadow: 0 10px 30px -8px var(--accent-glow), 0 0 0 1px rgba(255, 255, 255, 0.1) inset;
}

.btn:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 14px 36px -8px var(--accent-glow), 0 0 0 1px rgba(255, 255, 255, 0.15) inset;
}

.btn:active:not(:disabled) {
  transform: translateY(0) scale(0.99);
}

.btn:disabled {
  cursor: not-allowed;
  filter: grayscale(0.7) brightness(0.55);
  box-shadow: none;
}

@keyframes shakeCheck {
  0%, 100% { transform: translateX(0); }
  20%      { transform: translateX(-6px); }
  40%      { transform: translateX(6px); }
  60%      { transform: translateX(-4px); }
  80%      { transform: translateX(4px); }
}

.check.shake {
  animation: shakeCheck 0.4s ease;
  border-color: var(--warning, #ffd56a) !important;
  box-shadow: 0 0 0 3px rgba(255, 213, 106, 0.3) !important;
}

.btn .arrow {
  display: inline-block;
  transition: transform .25s ease;
  margin-left: 4px;
  animation: arrowNudge 1.8s ease-in-out infinite;
}

.btn:hover:not(:disabled) .arrow {
  transform: translateX(6px);
  animation: none;
}

.btn:disabled .arrow {
  animation: none;
}

@keyframes arrowNudge {
  0%, 100% { transform: translateX(0); }
  50%      { transform: translateX(3px); }
}

/* Lock → unlock icon for disabled/enabled states */
.lock {
  width: 16px;
  height: 16px;
  margin-right: 2px;
  vertical-align: -3px;
  transition: transform .3s ease;
}

.btn:not(:disabled) .lock .shackle {
  transform: translateY(-2px) rotate(-18deg);
  transform-origin: 18px 10px;
  transition: transform .35s cubic-bezier(.3, 1.4, .4, 1);
}

.btn:disabled .lock .shackle {
  transform: translateY(0) rotate(0);
  transition: transform .3s ease;
}

/* Shimmer on enabled button */
.btn:not(:disabled)::after {
  content: "";
  position: absolute;
  top: 0;
  left: -50%;
  width: 40%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  transform: skewX(-20deg);
  animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
  0%   { left: -50%; }
  60%  { left: 120%; }
  100% { left: 120%; }
}

.hint {
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 10px;
  min-height: 16px;
  transition: color .2s ease, opacity .2s ease;
}

.hint.ok {
  color: var(--accent);
}

/* Optional Telegram CSKH button */
.tg-support-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 12px;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  color: #7df5c6;
  text-decoration: none;
  background: rgba(34, 227, 154, 0.08);
  border: 1px solid rgba(34, 227, 154, 0.24);
  transition: background .2s ease, border-color .2s ease, transform .15s ease;
}

.tg-support-btn[hidden] {
  display: none !important;
}

.tg-support-btn:hover {
  background: rgba(34, 227, 154, 0.15);
  border-color: rgba(34, 227, 154, 0.45);
  transform: translateY(-1px);
}

.footer {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 11px;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.5;
}

/* Mobile tweaks */
@media (max-width: 380px) {
  .card { padding: 22px 18px; border-radius: 16px; }
  h1 { font-size: 20px; }
  .intro, .terms, .check-label { font-size: 14px; }
  .btn { font-size: 15px; padding: 15px 20px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
}