/* ═══════════════════════════════════════════════
   Crypgo — Dark Theme
   ═══════════════════════════════════════════════ */

:root {
  --page:    #0A0A0A;
  --card:    #141414;
  --elevated:#1C1C1C;
  --hover:   #232323;
  --border:  #1E1E1E;
  --primary: #47D47E;
  --tag-bg:  #1F3D2C;
  --text:    #FFFFFF;
  --muted:   #888888;
  --subtle:  #555555;
  --accent:  #F7931A;
  --alipay:  #1677FF;
  --wechat:  #07C160;
  --glow:    rgba(71, 212, 126, 0.15);
  --card-shadow: 0 2px 20px rgba(0,0,0,0.4);
  --card-hover-shadow: 0 8px 32px rgba(71, 212, 126, 0.12);
}

/* ── Base ───────────────────────────────────── */
html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  background: var(--page);
  color: var(--text);
  transition: background 0.4s ease, color 0.4s ease;
}

/* ── Theme Toggle ───────────────────────────── */
.theme-toggle {
  position: relative;
  width: 44px;
  height: 24px;
  border-radius: 999px;
  background: var(--elevated);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all 0.3s ease;
}
.theme-toggle::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--primary);
  transition: transform 0.3s cubic-bezier(0.68, -0.55, 0.27, 1.55);
}
.theme-toggle:hover {
  border-color: var(--primary);
}

/* ── Floating Particles (hero bg) ───────────── */
.particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}
.particle {
  position: absolute;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--primary);
  opacity: 0.35;
  box-shadow: 0 0 8px var(--primary), 0 0 16px rgba(71, 212, 126, 0.3);
  animation: particleFloat var(--dur, 8s) ease-in-out infinite;
  animation-delay: var(--delay, 0s);
}

@keyframes particleFloat {
  0%, 100% {
    transform: translateY(0) translateX(0) scale(1);
    opacity: 0.25;
  }
  25% {
    transform: translateY(-50px) translateX(25px) scale(1.4);
    opacity: 0.5;
  }
  50% {
    transform: translateY(-25px) translateX(-20px) scale(0.7);
    opacity: 0.35;
  }
  75% {
    transform: translateY(-60px) translateX(10px) scale(1.2);
    opacity: 0.45;
  }
}

/* ── Scroll Reveal ──────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ── Card Hover Effects ─────────────────────── */
.card-hover {
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  box-shadow: var(--card-shadow);
}
.card-hover:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: var(--card-hover-shadow);
  border-color: var(--primary) !important;
}

/* ── Widget Glow ────────────────────────────── */
.widget-glow {
  box-shadow: 0 0 40px rgba(71, 212, 126, 0.08);
  transition: box-shadow 0.4s ease;
}
.widget-glow:focus-within {
  box-shadow: 0 0 60px rgba(71, 212, 126, 0.15);
}

/* ── Swap Button Spin ───────────────────────── */
.swap-spin {
  transition: transform 0.5s cubic-bezier(0.68, -0.55, 0.27, 1.55);
}
.swap-spin.spinning {
  transform: rotate(180deg);
}

/* ── Pulse Glow on Primary Button ───────────── */
@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(71, 212, 126, 0.4); }
  50%      { box-shadow: 0 0 20px 4px rgba(71, 212, 126, 0.2); }
}
.pulse-glow {
  animation: pulseGlow 2.5s ease-in-out infinite;
}

/* ── Counter Typing Cursor ──────────────────── */
@keyframes blink {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0; }
}
.cursor-blink::after {
  content: '|';
  animation: blink 1s step-end infinite;
  color: var(--primary);
  margin-left: 2px;
}

/* ── Gradient Text ──────────────────────────── */
.gradient-text {
  background: linear-gradient(135deg, var(--primary), #7BF0B0, var(--primary));
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientShift 4s ease-in-out infinite;
}

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

/* ── Step Connector Lines ───────────────────── */
.step-connector {
  position: relative;
}
.step-connector::after {
  content: '';
  position: absolute;
  top: 50%;
  right: -10px;
  width: 20px;
  height: 2px;
  background: var(--border);
}
.step-connector:last-child::after {
  display: none;
}

/* ── Star Rating Shimmer ────────────────────── */
@keyframes shimmer {
  0%   { background-position: -200px 0; }
  100% { background-position: 200px 0; }
}
.shimmer-stars {
  background: linear-gradient(90deg, var(--accent) 0%, #FFD700 50%, var(--accent) 100%);
  background-size: 200px 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 3s linear infinite;
}

/* ── Ripple Effect ──────────────────────────── */
@keyframes ripple {
  to {
    transform: scale(4);
    opacity: 0;
  }
}
.ripple-container {
  position: relative;
  overflow: hidden;
}
.ripple-container .ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(71, 212, 126, 0.3);
  transform: scale(0);
  animation: ripple 0.6s linear;
  pointer-events: none;
}

/* ── Number Counter ─────────────────────────── */
@keyframes countUp {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}
.count-animate {
  animation: countUp 0.5s ease-out forwards;
}

/* ── Mobile Menu ────────────────────────────── */
.mobile-menu {
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}
.mobile-menu.open {
  transform: translateX(0);
}

/* ── Progress Bar (for exchange timer) ──────── */
@keyframes progressShrink {
  from { width: 100%; }
  to   { width: 0%; }
}
.progress-bar {
  height: 3px;
  background: var(--primary);
  border-radius: 999px;
  animation: progressShrink 900s linear forwards; /* 15 min */
}

/* ── Tooltip ────────────────────────────────── */
.tooltip {
  position: relative;
}
.tooltip::before {
  content: attr(data-tip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-4px);
  background: var(--elevated);
  color: var(--text);
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}
.tooltip:hover::before {
  opacity: 1;
}