/* ═══════════════════════════════════════════════════════════════════
   UK LOTTERY PREDICTOR — Design System
   Palette : Acid Neon  (#CCFF00 · #FF3CAC · #0D0D0D · #1A1A2E)
   Fonts   : Outfit (UI) · Space Mono (numbers/code)
   Tone    : Retro-futuristic neon arcade
═══════════════════════════════════════════════════════════════════ */

/* ── Reset & base ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --neon-green:   #CCFF00;
  --neon-pink:    #FF3CAC;
  --neon-blue:    #00D4FF;
  --neon-orange:  #FF6B2B;
  --bg-deep:      #060610;
  --bg-card:      #0E0E1E;
  --bg-card2:     #13132A;
  --border:       rgba(204,255,0,0.15);
  --border-bright:rgba(204,255,0,0.45);
  --text-primary: #F0F0FF;
  --text-muted:   rgba(240,240,255,0.5);
  --text-dim:     rgba(240,240,255,0.25);

  --font-ui:   'Outfit', sans-serif;
  --font-mono: 'Space Mono', monospace;

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;

  --shadow-neon-green: 0 0 20px rgba(204,255,0,0.35), 0 0 60px rgba(204,255,0,0.12);
  --shadow-neon-pink:  0 0 20px rgba(255,60,172,0.35), 0 0 60px rgba(255,60,172,0.12);
  --shadow-card:       0 4px 32px rgba(0,0,0,0.6);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-ui);
  background: var(--bg-deep);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

a { color: var(--neon-green); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Animated background ──────────────────────────────────────── */
.bg-grid {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(204,255,0,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(204,255,0,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  animation: gridDrift 40s linear infinite;
}
@keyframes gridDrift {
  0%   { background-position: 0 0; }
  100% { background-position: 60px 60px; }
}

.bg-glow {
  position: fixed; z-index: 0; pointer-events: none;
  border-radius: 50%; filter: blur(120px); opacity: 0.18;
  animation: glowPulse 8s ease-in-out infinite alternate;
}
.bg-glow--green {
  width: 600px; height: 600px;
  background: var(--neon-green);
  top: -200px; left: -200px;
}
.bg-glow--pink {
  width: 500px; height: 500px;
  background: var(--neon-pink);
  bottom: -150px; right: -150px;
  animation-delay: -4s;
}
@keyframes glowPulse {
  0%   { opacity: 0.12; transform: scale(1); }
  100% { opacity: 0.22; transform: scale(1.15); }
}

/* ── Layout helpers ───────────────────────────────────────────── */
.container {
  position: relative; z-index: 1;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Header ───────────────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(6,6,16,0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  max-width: 1100px; margin: 0 auto; padding: 0 24px;
  height: 64px;
  display: flex; align-items: center; justify-content: space-between;
}
.logo {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-ui); font-weight: 700; font-size: 1.2rem;
}
.logo-icon { font-size: 1.4rem; }
.logo-text { color: var(--text-primary); letter-spacing: -0.02em; }
.logo-accent { color: var(--neon-green); }
.header-badge {
  font-family: var(--font-mono); font-size: 0.65rem;
  color: var(--neon-green); letter-spacing: 0.1em; text-transform: uppercase;
  border: 1px solid var(--border-bright);
  padding: 4px 10px; border-radius: 100px;
}

/* ── Hero ─────────────────────────────────────────────────────── */
.hero {
  position: relative; z-index: 1;
  padding: 80px 24px 60px;
  text-align: center;
}
.hero-inner { max-width: 700px; margin: 0 auto; }

.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 0.72rem;
  color: var(--neon-green); letter-spacing: 0.12em; text-transform: uppercase;
  margin-bottom: 20px;
}
.pulse-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--neon-green);
  box-shadow: 0 0 8px var(--neon-green);
  animation: pulseDot 2s ease-in-out infinite;
}
@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.7); }
}

.hero-title {
  font-size: clamp(2.8rem, 7vw, 5rem);
  font-weight: 900; line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 20px;
}
.hero-title--accent {
  color: var(--neon-green);
  text-shadow: var(--shadow-neon-green);
}
.hero-subtitle {
  font-size: 1.05rem; color: var(--text-muted);
  max-width: 560px; margin: 0 auto 16px;
  line-height: 1.7;
}
.disclaimer-inline {
  font-size: 0.78rem; color: var(--text-dim);
}
.disclaimer-inline a { color: var(--neon-pink); }

/* ── Section label ────────────────────────────────────────────── */
.section-label {
  font-family: var(--font-mono); font-size: 0.7rem;
  color: var(--neon-green); letter-spacing: 0.15em; text-transform: uppercase;
  margin-bottom: 28px;
  display: flex; align-items: center; gap: 12px;
}
.section-label::after {
  content: ''; flex: 1; height: 1px;
  background: linear-gradient(90deg, var(--border-bright), transparent);
}

/* ── Game selector ────────────────────────────────────────────── */
.game-selector-section {
  position: relative; z-index: 1;
  padding: 0 0 60px;
}
.game-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}

.game-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px 22px;
  cursor: pointer;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
  overflow: hidden;
  user-select: none;
}
.game-card::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(204,255,0,0.04), transparent 60%);
  opacity: 0; transition: opacity 0.3s;
}
.game-card:hover { transform: translateY(-2px); }
.game-card:hover::before { opacity: 1; }
.game-card.active {
  border-color: var(--neon-green);
  box-shadow: var(--shadow-neon-green), inset 0 0 30px rgba(204,255,0,0.04);
}
.game-card.active::before { opacity: 1; }

.game-card__accent {
  position: absolute; top: 0; left: 0; right: 0;
  height: 3px; border-radius: var(--radius-md) var(--radius-md) 0 0;
  opacity: 0.7;
}
.game-card__header {
  display: flex; align-items: flex-start; justify-content: space-between;
  margin-bottom: 12px;
}
.game-card__name {
  font-size: 1.05rem; font-weight: 700; letter-spacing: -0.01em;
  color: var(--text-primary);
}
.game-card__badge {
  font-family: var(--font-mono); font-size: 0.6rem;
  padding: 3px 8px; border-radius: 100px;
  letter-spacing: 0.08em; text-transform: uppercase;
  font-weight: 700;
}
.game-card__info {
  font-size: 0.82rem; color: var(--text-muted);
  display: flex; flex-direction: column; gap: 4px;
}
.game-card__info-row {
  display: flex; align-items: center; gap: 6px;
}
.game-card__info-row span:first-child {
  font-family: var(--font-mono); font-size: 0.7rem;
  color: var(--text-dim); min-width: 52px;
}
.game-card__days {
  margin-top: 12px;
  display: flex; gap: 6px; flex-wrap: wrap;
}
.day-chip {
  font-family: var(--font-mono); font-size: 0.6rem;
  padding: 2px 8px; border-radius: 100px;
  border: 1px solid var(--border);
  color: var(--text-muted); letter-spacing: 0.05em;
}
.game-card.active .day-chip {
  border-color: rgba(204,255,0,0.3);
  color: var(--neon-green);
}

/* ── Prediction section ───────────────────────────────────────── */
.prediction-section {
  position: relative; z-index: 1;
  padding: 0 0 60px;
}

.prediction-header {
  display: flex; align-items: baseline; justify-content: space-between;
  flex-wrap: wrap; gap: 8px;
  margin-bottom: 32px;
}
.prediction-game-name {
  font-size: 1.5rem; font-weight: 700; letter-spacing: -0.02em;
  color: var(--text-primary);
}
.prediction-meta {
  font-family: var(--font-mono); font-size: 0.7rem;
  color: var(--text-muted); letter-spacing: 0.05em;
}

/* ── Balls stage ──────────────────────────────────────────────── */
.balls-stage {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px 32px;
  min-height: 200px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 32px;
  position: relative; overflow: hidden;
}
.balls-stage::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(204,255,0,0.04) 0%, transparent 70%);
}

/* Placeholder */
.balls-placeholder {
  text-align: center; color: var(--text-dim);
}
.placeholder-balls {
  display: flex; gap: 12px; justify-content: center;
  margin-bottom: 16px;
}
.ph-ball {
  width: 52px; height: 52px; border-radius: 50%;
  border: 2px dashed rgba(204,255,0,0.15);
  animation: phPulse 2s ease-in-out infinite;
}
.ph-ball:nth-child(2) { animation-delay: 0.2s; }
.ph-ball:nth-child(3) { animation-delay: 0.4s; }
.ph-ball:nth-child(4) { animation-delay: 0.6s; }
.ph-ball:nth-child(5) { animation-delay: 0.8s; }
.ph-ball:nth-child(6) { animation-delay: 1.0s; }
@keyframes phPulse {
  0%, 100% { opacity: 0.3; }
  50%       { opacity: 0.7; }
}

/* Result */
.balls-result { text-align: center; width: 100%; }
.main-balls-row {
  display: flex; flex-wrap: wrap; gap: 14px;
  justify-content: center; margin-bottom: 20px;
}
.extra-balls-row {
  display: flex; flex-wrap: wrap; gap: 14px;
  justify-content: center; align-items: center;
}
.extra-label {
  font-family: var(--font-mono); font-size: 0.65rem;
  color: var(--text-muted); letter-spacing: 0.1em; text-transform: uppercase;
  margin-right: 4px;
}

/* Individual ball */
.lottery-ball {
  width: 64px; height: 64px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-size: 1.1rem; font-weight: 700;
  position: relative; cursor: default;
  transform: scale(0) rotate(-180deg);
  opacity: 0;
  transition: transform 0.5s cubic-bezier(0.34,1.56,0.64,1),
              opacity 0.3s ease;
}
.lottery-ball.revealed {
  transform: scale(1) rotate(0deg);
  opacity: 1;
}
.lottery-ball.main-ball {
  background: linear-gradient(135deg, #1a1a2e 0%, #0d0d1a 100%);
  border: 2px solid var(--neon-green);
  color: var(--neon-green);
  box-shadow: 0 0 16px rgba(204,255,0,0.3), inset 0 1px 0 rgba(204,255,0,0.2);
}
.lottery-ball.main-ball::after {
  content: '';
  position: absolute; top: 8px; left: 12px;
  width: 16px; height: 8px; border-radius: 50%;
  background: rgba(204,255,0,0.15);
  transform: rotate(-30deg);
}
.lottery-ball.extra-ball {
  width: 56px; height: 56px; font-size: 1rem;
  background: linear-gradient(135deg, #1a0a2e 0%, #0d0010 100%);
  border: 2px solid var(--neon-pink);
  color: var(--neon-pink);
  box-shadow: 0 0 16px rgba(255,60,172,0.3), inset 0 1px 0 rgba(255,60,172,0.2);
}
.lottery-ball.extra-ball::after {
  content: '';
  position: absolute; top: 7px; left: 10px;
  width: 14px; height: 7px; border-radius: 50%;
  background: rgba(255,60,172,0.15);
  transform: rotate(-30deg);
}

/* ── Generate button ──────────────────────────────────────────── */
.generate-wrap {
  display: flex; flex-direction: column; align-items: center; gap: 12px;
  margin-bottom: 40px;
}
.btn-generate {
  position: relative;
  background: var(--neon-green);
  color: #060610;
  border: none; border-radius: var(--radius-xl);
  padding: 0 48px;
  height: 72px;
  font-family: var(--font-ui); font-size: 1.1rem; font-weight: 700;
  cursor: pointer;
  display: flex; align-items: center; gap: 12px;
  transition: transform 0.15s, box-shadow 0.2s, background 0.2s;
  box-shadow: 0 0 30px rgba(204,255,0,0.4), 0 4px 20px rgba(0,0,0,0.4);
  overflow: hidden;
  letter-spacing: -0.01em;
}
.btn-generate::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 60%);
}
.btn-generate:hover:not(:disabled) {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 0 50px rgba(204,255,0,0.6), 0 8px 30px rgba(0,0,0,0.5);
}
.btn-generate:active:not(:disabled) {
  transform: translateY(0) scale(0.98);
}
.btn-generate:disabled {
  background: #2a2a3a; color: var(--text-dim);
  box-shadow: none; cursor: not-allowed;
}
.btn-generate__icon {
  font-size: 1.3rem;
  animation: spinStar 4s linear infinite;
}
@keyframes spinStar {
  0%   { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}
.btn-generate:disabled .btn-generate__icon { animation: none; }
.btn-generate__text { font-size: 1.1rem; }
.btn-generate__sub {
  font-size: 0.72rem; font-weight: 400; opacity: 0.7;
  font-family: var(--font-mono);
}
.btn-generate.loading {
  pointer-events: none;
  background: #1a2a00;
  color: var(--neon-green);
}
.btn-generate.loading .btn-generate__icon { animation: loadSpin 0.8s linear infinite; }
@keyframes loadSpin {
  0%   { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.combo-counter {
  font-family: var(--font-mono); font-size: 0.7rem;
  color: var(--text-dim); letter-spacing: 0.1em;
  min-height: 20px;
}

/* ── Stats strip ──────────────────────────────────────────────── */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}
.stat-card {
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  transition: border-color 0.2s;
}
.stat-card:hover { border-color: var(--border-bright); }
.stat-card__label {
  font-family: var(--font-mono); font-size: 0.65rem;
  color: var(--text-muted); letter-spacing: 0.1em; text-transform: uppercase;
  margin-bottom: 8px;
}
.stat-card__value {
  font-family: var(--font-mono); font-size: 0.9rem;
  color: var(--neon-green); font-weight: 700;
  letter-spacing: 0.05em;
}

/* ── Explainer section ────────────────────────────────────────── */
.explainer-section {
  position: relative; z-index: 1;
  padding: 60px 24px;
  border-top: 1px solid var(--border);
}
.explainer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}
.explainer-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: border-color 0.2s, transform 0.2s;
}
.explainer-card:hover {
  border-color: var(--border-bright);
  transform: translateY(-2px);
}
.explainer-card__icon {
  font-size: 1.8rem; margin-bottom: 12px;
}
.explainer-card h3 {
  font-size: 0.95rem; font-weight: 700;
  color: var(--text-primary); margin-bottom: 8px;
  letter-spacing: -0.01em;
}
.explainer-card p {
  font-size: 0.82rem; color: var(--text-muted); line-height: 1.65;
}

/* ── Footer ───────────────────────────────────────────────────── */
.site-footer {
  position: relative; z-index: 1;
  border-top: 1px solid var(--border);
  padding: 40px 24px;
  text-align: center;
}
.footer-disclaimer {
  font-size: 0.78rem; color: var(--text-muted);
  max-width: 700px; margin: 0 auto 12px; line-height: 1.7;
}
.footer-disclaimer a { color: var(--neon-pink); }
.footer-note {
  font-size: 0.7rem; color: var(--text-dim);
}

/* ── Utility ──────────────────────────────────────────────────── */
.hidden { display: none !important; }

/* ── Responsive ───────────────────────────────────────────────── */
@media (max-width: 640px) {
  .hero { padding: 48px 20px 40px; }
  .hero-title { font-size: 2.4rem; }
  .balls-stage { padding: 32px 16px; }
  .lottery-ball { width: 52px; height: 52px; font-size: 0.95rem; }
  .lottery-ball.extra-ball { width: 46px; height: 46px; }
  .btn-generate { height: 60px; padding: 0 32px; font-size: 1rem; }
  .game-grid { grid-template-columns: 1fr; }
  .stats-strip { grid-template-columns: 1fr 1fr; }
}

/* ── Ball reveal animation ────────────────────────────────────── */
@keyframes ballBounce {
  0%   { transform: scale(0) rotate(-180deg); opacity: 0; }
  60%  { transform: scale(1.15) rotate(5deg); opacity: 1; }
  80%  { transform: scale(0.95) rotate(-2deg); }
  100% { transform: scale(1) rotate(0deg); opacity: 1; }
}
.lottery-ball.animate-in {
  animation: ballBounce 0.55s cubic-bezier(0.34,1.56,0.64,1) forwards;
}

/* ── Shimmer on active card ───────────────────────────────────── */
@keyframes shimmer {
  0%   { background-position: -200% center; }
  100% { background-position: 200% center; }
}
.game-card.active .game-card__name {
  background: linear-gradient(90deg, var(--text-primary) 0%, var(--neon-green) 50%, var(--text-primary) 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 3s linear infinite;
}