/* ============================
   DESIGN TOKENS
   ============================ */
:root {
  /* Colors */
  --bg-primary: #0b0e14;
  --bg-secondary: #111620;
  --bg-card: rgba(22, 28, 40, 0.85);
  --bg-card-hover: rgba(28, 36, 52, 0.95);
  --border-subtle: rgba(255,255,255,0.06);
  --border-glow: rgba(255,255,255,0.12);

  --text-primary: #e8ecf4;
  --text-secondary: #8b95a8;
  --text-muted: #505a6e;

  --accent-a: #00e676;
  --accent-a-dim: rgba(0,230,118,0.15);
  --accent-a-glow: rgba(0,230,118,0.35);

  --accent-b: #448aff;
  --accent-b-dim: rgba(68,138,255,0.15);
  --accent-b-glow: rgba(68,138,255,0.35);

  --court-green: #1b5e20;
  --court-green-light: #2e7d32;
  --court-line: rgba(255,255,255,0.55);
  --net-color: #fff;

  --danger: #ff5252;
  --warning: #ffd740;

  /* Typography */
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Radii */
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-xl: 28px;

  /* Shadows */
  --shadow-card: 0 4px 24px rgba(0,0,0,0.35), 0 1px 3px rgba(0,0,0,0.2);
  --shadow-glow-a: 0 0 30px var(--accent-a-glow);
  --shadow-glow-b: 0 0 30px var(--accent-b-glow);
}

/* ============================
   RESET & BASE
   ============================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-main);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  background-image:
    radial-gradient(ellipse at 20% 0%, rgba(0,230,118,0.06) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 100%, rgba(68,138,255,0.06) 0%, transparent 60%);
}

/* ============================
   SCREEN MANAGEMENT
   ============================ */
.screen {
  display: none;
  animation: fadeIn .4s ease;
}
.screen.active {
  display: block;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============================
   SETUP SCREEN
   ============================ */
.setup-container {
  max-width: 480px;
  margin: 0 auto;
  padding: 32px 20px 60px;
}

/* Header */
.app-header {
  text-align: center;
  margin-bottom: 36px;
}
.logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 6px;
}
.logo-icon {
  font-size: 2.2rem;
  filter: drop-shadow(0 0 10px var(--accent-a-glow));
  animation: float 3s ease-in-out infinite;
}
@keyframes float {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}
.logo h1 {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}
.accent {
  background: linear-gradient(135deg, var(--accent-a), var(--accent-b));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.tagline {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 400;
  margin-bottom: 12px;
}

/* History Link */
.history-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 100px;
  color: var(--text-secondary);
  font-family: var(--font-main);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .25s;
}
.history-link:hover {
  border-color: var(--border-glow);
  color: var(--text-primary);
  background: var(--bg-card-hover);
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-lg);
  padding: 22px 24px;
  margin-bottom: 18px;
  backdrop-filter: blur(16px);
  transition: border-color .25s, box-shadow .25s;
}
.card:hover {
  border-color: var(--border-glow);
}
.card-title {
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.team-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}
.team-a-dot { background: var(--accent-a); box-shadow: 0 0 8px var(--accent-a-glow); }
.team-b-dot { background: var(--accent-b); box-shadow: 0 0 8px var(--accent-b-glow); }

/* Toggle Group */
.toggle-group {
  display: flex;
  gap: 10px;
}
.toggle-btn {
  flex: 1;
  padding: 14px;
  background: var(--bg-secondary);
  border: 2px solid var(--border-subtle);
  border-radius: var(--r-md);
  color: var(--text-secondary);
  font-family: var(--font-main);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .25s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.toggle-btn:hover {
  border-color: var(--border-glow);
  color: var(--text-primary);
}
.toggle-btn.active {
  background: var(--accent-a-dim);
  border-color: var(--accent-a);
  color: var(--accent-a);
  box-shadow: var(--shadow-glow-a);
}
.toggle-icon {
  font-size: 1.2rem;
}

/* Points Selector */
.points-selector {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}
.points-btn {
  width: 56px;
  height: 46px;
  background: var(--bg-secondary);
  border: 2px solid var(--border-subtle);
  border-radius: var(--r-md);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all .25s;
}
.points-btn:hover {
  border-color: var(--border-glow);
  color: var(--text-primary);
}
.points-btn.active {
  background: var(--accent-a-dim);
  border-color: var(--accent-a);
  color: var(--accent-a);
  box-shadow: var(--shadow-glow-a);
}
.points-custom-wrap {
  flex: 1;
  min-width: 80px;
}
.points-custom-input {
  width: 100%;
  height: 46px;
  background: var(--bg-secondary);
  border: 2px solid var(--border-subtle);
  border-radius: var(--r-md);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
  padding: 0 12px;
  text-align: center;
  transition: border-color .25s;
  outline: none;
}
.points-custom-input::placeholder {
  color: var(--text-muted);
  font-family: var(--font-main);
  font-weight: 500;
}
.points-custom-input:focus {
  border-color: var(--accent-a);
}

/* Player Inputs */
.player-inputs {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.input-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.input-group label {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.input-group input {
  height: 46px;
  background: var(--bg-secondary);
  border: 2px solid var(--border-subtle);
  border-radius: var(--r-md);
  color: var(--text-primary);
  font-family: var(--font-main);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0 14px;
  outline: none;
  transition: border-color .25s, box-shadow .25s;
}
.input-group input:focus {
  border-color: var(--accent-a);
  box-shadow: 0 0 0 3px var(--accent-a-dim);
}
.team-b-card .input-group input:focus {
  border-color: var(--accent-b);
  box-shadow: 0 0 0 3px var(--accent-b-dim);
}
.hidden { display: none !important; }

/* First Server Picker */
.first-server-group {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.server-pick {
  flex: 1;
  min-width: calc(50% - 8px);
  padding: 12px 10px;
  background: var(--bg-secondary);
  border: 2px solid var(--border-subtle);
  border-radius: var(--r-md);
  color: var(--text-secondary);
  font-family: var(--font-main);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .25s;
  display: flex;
  align-items: center;
  gap: 8px;
  justify-content: center;
}
.server-pick:hover {
  border-color: var(--border-glow);
  color: var(--text-primary);
}
.server-pick.active {
  background: var(--accent-a-dim);
  border-color: var(--accent-a);
  color: var(--accent-a);
  box-shadow: var(--shadow-glow-a);
}
.server-pick[data-server^="b"].active {
  background: var(--accent-b-dim);
  border-color: var(--accent-b);
  color: var(--accent-b);
  box-shadow: var(--shadow-glow-b);
}
.server-pick .team-dot {
  width: 8px;
  height: 8px;
  flex-shrink: 0;
}

/* Start Button */
.btn-start {
  width: 100%;
  height: 56px;
  margin-top: 10px;
  background: linear-gradient(135deg, var(--accent-a), #00c853);
  border: none;
  border-radius: var(--r-lg);
  color: #000;
  font-family: var(--font-main);
  font-size: 1.05rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: transform .2s, box-shadow .25s;
  box-shadow: 0 4px 20px var(--accent-a-glow);
}
.btn-start:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px var(--accent-a-glow);
}
.btn-start:active {
  transform: translateY(0);
}
.btn-arrow {
  font-size: 1.3rem;
  transition: transform .2s;
}
.btn-start:hover .btn-arrow {
  transform: translateX(4px);
}

/* ============================
   MATCH SCREEN
   ============================ */
#match-screen {
  max-width: 600px;
  margin: 0 auto;
  padding: 16px 16px 40px;
}

/* Match Header */
.match-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.icon-btn {
  width: 40px;
  height: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-sm);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all .2s;
}
.icon-btn:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  border-color: var(--border-glow);
}
.match-info {
  display: flex;
  gap: 8px;
}
.match-badge {
  padding: 5px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.set-badge { color: var(--warning); border-color: rgba(255,215,64,0.2); }
.points-badge { color: var(--accent-a); border-color: rgba(0,230,118,0.2); }

/* Set Scores */
.set-scores {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 14px;
  min-height: 24px;
}
.set-score-item {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
  padding: 3px 10px;
  background: var(--bg-card);
  border-radius: 100px;
  border: 1px solid var(--border-subtle);
}
.set-score-item.won-a { color: var(--accent-a); border-color: rgba(0,230,118,0.2); }
.set-score-item.won-b { color: var(--accent-b); border-color: rgba(68,138,255,0.2); }

/* Court */
.court-wrapper {
  margin-bottom: 20px;
  position: relative;
}
.court {
  display: flex;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 3px solid var(--court-line);
  height: 200px;
  background: var(--court-green);
  box-shadow: var(--shadow-card), inset 0 0 60px rgba(0,0,0,0.3);
}
.court-half {
  flex: 1;
  display: flex;
  flex-direction: column;
  position: relative;
}
.service-box {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: background .35s;
}
.service-box.serving {
  background: rgba(255,255,255,0.08);
}
.service-box.serving::after {
  content: '🏸';
  position: absolute;
  top: 6px;
  font-size: 0.9rem;
  animation: pulse 1.5s ease-in-out infinite;
}
.court-left .service-box.serving::after {
  right: 8px;  /* near the net for left-side boxes */
  left: auto;
}
.court-right .service-box.serving::after {
  left: 8px;   /* near the net for right-side boxes */
  right: auto;
}
@keyframes pulse {
  0%,100% { opacity: .5; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.15); }
}
.court-line-h {
  height: 2px;
  background: var(--court-line);
}
.court-left {
  border-right: 2px solid var(--court-line);
}

/* Net */
.net {
  width: 6px;
  position: relative;
  display: flex;
  flex-direction: column;
  z-index: 2;
}
.net-line {
  flex: 1;
  background: repeating-linear-gradient(
    to bottom,
    var(--net-color) 0px,
    var(--net-color) 3px,
    transparent 3px,
    transparent 6px
  );
  width: 2px;
  margin: 0 auto;
}
.net-post {
  width: 6px;
  height: 8px;
  background: #ccc;
  border-radius: 2px;
}

/* Player Tags */
.player-tag {
  padding: 4px 14px;
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  background: rgba(0,0,0,0.45);
  color: #fff;
  white-space: nowrap;
  transition: all .3s;
  backdrop-filter: blur(4px);
}
.player-tag.team-a {
  border: 1.5px solid var(--accent-a);
  text-shadow: 0 0 8px var(--accent-a-glow);
}
.player-tag.team-b {
  border: 1.5px solid var(--accent-b);
  text-shadow: 0 0 8px var(--accent-b-glow);
}
.player-tag:empty { display: none; }

/* Serve Indicator */
.serve-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 10px;
  padding: 8px 16px;
  background: var(--bg-card);
  border-radius: 100px;
  border: 1px solid var(--border-subtle);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
}
.serve-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-a);
  box-shadow: 0 0 10px var(--accent-a-glow);
  animation: pulse 1.5s ease-in-out infinite;
}

/* Score Section */
.score-section {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}
.score-panel {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-lg);
  padding: 20px 16px;
  text-align: center;
  transition: border-color .3s, box-shadow .3s;
}
.score-panel.serving-team {
  border-color: var(--accent-a);
  box-shadow: var(--shadow-glow-a);
}
.team-a-panel.serving-team {
  border-color: var(--accent-a);
  box-shadow: var(--shadow-glow-a);
}
.team-b-panel.serving-team {
  border-color: var(--accent-b);
  box-shadow: var(--shadow-glow-b);
}
.team-label {
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.score-value {
  font-family: var(--font-mono);
  font-size: 3.2rem;
  font-weight: 700;
  line-height: 1;
  margin-bottom: 14px;
  transition: transform .15s;
}
.score-value.pop {
  animation: scorePop .35s ease;
}
@keyframes scorePop {
  0% { transform: scale(1); }
  40% { transform: scale(1.25); }
  100% { transform: scale(1); }
}
.team-a-panel .score-value { color: var(--accent-a); }
.team-b-panel .score-value { color: var(--accent-b); }

.score-divider {
  display: flex;
  align-items: center;
  justify-content: center;
}
.vs-text {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.1em;
}

/* Score Button */
.score-btn {
  width: 100%;
  height: 44px;
  border: none;
  border-radius: var(--r-md);
  font-family: var(--font-main);
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: all .2s;
}
.team-a-panel .score-btn {
  background: linear-gradient(135deg, var(--accent-a), #00c853);
  color: #000;
  box-shadow: 0 2px 12px var(--accent-a-glow);
}
.team-a-panel .score-btn:hover {
  box-shadow: 0 4px 20px var(--accent-a-glow);
  transform: translateY(-1px);
}
.team-b-panel .score-btn {
  background: linear-gradient(135deg, var(--accent-b), #2962ff);
  color: #fff;
  box-shadow: 0 2px 12px var(--accent-b-glow);
}
.team-b-panel .score-btn:hover {
  box-shadow: 0 4px 20px var(--accent-b-glow);
  transform: translateY(-1px);
}
.score-btn:active {
  transform: translateY(0) scale(0.97);
}

/* Per-team Undo Button */
.undo-btn {
  width: 100%;
  height: 32px;
  margin-top: 6px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-md);
  background: transparent;
  font-family: var(--font-main);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: all .2s;
}
.undo-btn:hover {
  border-color: var(--border-glow);
  color: var(--text-secondary);
}
.undo-btn:active {
  transform: scale(0.97);
}

/* Action Bar */
.action-bar {
  display: flex;
  gap: 10px;
}
.action-btn {
  flex: 1;
  height: 44px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-md);
  color: var(--text-secondary);
  font-family: var(--font-main);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .2s;
}
.action-btn:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  border-color: var(--border-glow);
}
.action-btn.primary {
  background: var(--bg-card);
  border-color: var(--accent-a);
  color: var(--accent-a);
}
.action-btn.primary:hover {
  background: var(--accent-a-dim);
}

/* ============================
   OVERLAY
   ============================ */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  animation: fadeIn .3s ease;
}
.overlay.hidden { display: none; }
.overlay-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-xl);
  padding: 36px 32px;
  text-align: center;
  max-width: 380px;
  width: 90%;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}
.overlay-title {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 8px;
}
.overlay-winner {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--accent-a);
  margin-bottom: 4px;
}
.overlay-score {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 16px;
}
.overlay-set-summary {
  margin-bottom: 20px;
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}
.overlay-actions {
  display: flex;
  gap: 10px;
}

/* Confetti */
.confetti {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}
.confetti-piece {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  animation: confettiFall 2.5s ease-out forwards;
}
@keyframes confettiFall {
  0% { transform: translateY(-20px) rotate(0deg); opacity: 1; }
  100% { transform: translateY(400px) rotate(720deg); opacity: 0; }
}

/* ============================
   HISTORY SCREEN
   ============================ */
.history-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-top: 8px;
}
.history-title {
  font-size: 1.2rem;
  font-weight: 700;
}
.danger-btn:hover {
  color: var(--danger) !important;
  border-color: var(--danger) !important;
}
.history-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.history-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-lg);
  padding: 16px 20px;
  transition: border-color .25s;
}
.history-card:hover {
  border-color: var(--border-glow);
}
.history-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}
.history-match-type {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  padding: 3px 10px;
  background: var(--bg-secondary);
  border-radius: 100px;
}
.history-date {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 500;
}
.history-teams {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}
.history-team {
  flex: 1;
  font-size: 0.9rem;
  font-weight: 600;
}
.history-team.winner {
  color: var(--accent-a);
}
.history-team.winner-b {
  color: var(--accent-b);
}
.history-team.winner-b::before {
  content: '🏆 ';
  font-size: 0.8rem;
}
.history-team.winner::before {
  content: '🏆 ';
  font-size: 0.8rem;
}
.history-team:last-child {
  text-align: right;
}
.history-vs {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
}
.history-sets {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.history-set {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 100px;
  background: var(--bg-secondary);
  color: var(--text-muted);
}
.history-set.won-a {
  color: var(--accent-a);
}
.history-set.won-b {
  color: var(--accent-b);
}

/* Empty state */
.history-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}
.history-empty-icon {
  font-size: 3rem;
  display: block;
  margin-bottom: 12px;
  opacity: 0.5;
}
.history-empty p {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 4px;
}
.history-empty-sub {
  font-size: 0.85rem !important;
  font-weight: 400 !important;
  color: var(--text-muted) !important;
}

/* ============================
   RESPONSIVE
   ============================ */
@media (max-width: 440px) {
  .score-value { font-size: 2.4rem; }
  .court { height: 160px; }
  .setup-container { padding: 20px 14px 40px; }
}