/* -----------------------------
   Base: page globale
------------------------------ */
* {
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, sans-serif;
  background: linear-gradient(135deg, #0a0e27 0%, #16213e 50%, #0f3460 100%);
  color: #ffffff;
  margin: 0;
  padding: 40px 16px;
  text-align: center;
  min-height: 100vh;
  letter-spacing: 0.5px;
}

/* Notifications */
.notification {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 16px 24px;
  border-radius: 12px;
  font-weight: 600;
  z-index: 1000;
  animation: slideIn 0.3s ease-out;
}

.notification-error {
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  box-shadow: 0 10px 30px rgba(239, 68, 68, 0.3);
}

.notification-success {
  background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
  box-shadow: 0 10px 30px rgba(34, 197, 94, 0.3);
}

@keyframes slideIn {
  from {
    transform: translateX(400px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* -----------------------------
   Titres & textes
------------------------------ */
h1 {
  margin: 0 0 12px 0;
  font-size: 2.8rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, #00d4ff 0%, #0099ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h3 {
  margin: 0 0 30px 0;
  font-size: 1rem;
  font-weight: 400;
  color: #a0aec0;
  letter-spacing: 0.3px;
}

.name-box {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: center;
  margin: 40px auto 24px;
  max-width: 520px;
  padding: 12px 16px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.4);
  border: 1px solid rgba(148, 163, 184, 0.35);
  box-shadow: 0 12px 26px rgba(15, 23, 42, 0.25);
}

.name-label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: #cbd5f5;
  font-weight: 700;
}

.name-input {
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid rgba(148, 163, 184, 0.45);
  color: #e2e8f0;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 0.95rem;
  height: 36px;
  line-height: 1;
  width: 180px;
  text-align: center;
}

.name-input:focus {
  outline: none;
  border-color: rgba(56, 189, 248, 0.8);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.2);
}

.name-save {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  appearance: none;
  -webkit-appearance: none;
  margin: 0;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.35) 0%, rgba(14, 165, 233, 0.2) 100%);
  color: #e2e8f0;
  border: 1px solid rgba(56, 189, 248, 0.5);
  border-radius: 999px;
  padding: 0 16px;
  height: 36px;
  line-height: 36px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.name-save:hover {
  transform: translateY(-1px);
  border-color: rgba(56, 189, 248, 0.85);
  box-shadow: 0 10px 22px rgba(14, 165, 233, 0.25);
}

.leader-display {
  max-width: 640px;
  margin: 16px auto 26px;
  padding: 12px 20px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(234, 179, 8, 0.18) 0%, rgba(249, 115, 22, 0.12) 100%);
  border: 2px solid rgba(234, 179, 8, 0.45);
  color: #fde68a;
  font-weight: 700;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  box-shadow: 0 10px 26px rgba(234, 179, 8, 0.2);
}

.first-click-display {
  margin-top: -6px;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.2) 0%, rgba(14, 165, 233, 0.12) 100%);
  border-color: rgba(59, 130, 246, 0.55);
  color: #bfdbfe;
}

.connection-status {
  position: fixed;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  padding: 10px 16px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.85);
  color: #fca5a5;
  border: 1px solid rgba(248, 113, 113, 0.6);
  font-size: 0.85rem;
  letter-spacing: 0.4px;
  z-index: 1000;
  backdrop-filter: blur(8px);
}

.share-button {
  position: fixed;
  top: 20px;
  left: 20px;
  z-index: 1001;
  margin: 0;
  background: linear-gradient(135deg, rgba(14, 116, 144, 0.4) 0%, rgba(30, 64, 175, 0.35) 100%);
  color: #e2e8f0;
  border: 1px solid rgba(148, 163, 184, 0.5);
  border-radius: 999px;
  padding: 10px 18px;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.3);
}

.share-button:hover {
  transform: translateY(-2px);
  border-color: rgba(56, 189, 248, 0.8);
  box-shadow: 0 12px 26px rgba(14, 116, 144, 0.25);
}

p {
  margin: 8px 0;
  line-height: 1.6;
}

/* -----------------------------
   Streak + Ranking
------------------------------ */
#streakDisplay {
  max-width: 520px;
  margin: 20px auto 30px;
  padding: 16px 24px;
  border-radius: 16px;
  border: 2px solid rgba(255, 107, 107, 0.35);
  background: linear-gradient(135deg, rgba(255, 107, 107, 0.12) 0%, rgba(255, 107, 107, 0.05) 100%);
  box-shadow: 0 12px 30px rgba(255, 107, 107, 0.15);
  text-shadow: 0 0 10px rgba(255, 107, 107, 0.35);
  transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease, box-shadow 0.3s ease;
}

.streak-value {
  font-size: 2rem;
  font-weight: 800;
  color: #ff6b6b;
  letter-spacing: 0.5px;
}

.streak-rank {
  margin-top: 6px;
  font-size: 0.95rem;
  color: #f8c7c7;
  letter-spacing: 0.3px;
}

.streak-bump {
  animation: streakBump 0.45s ease;
}

@keyframes streakBump {
  0% {
    transform: scale(1);
  }
  40% {
    transform: scale(1.035);
  }
  100% {
    transform: scale(1);
  }
}

.streak-tier-0 {
  border-color: rgba(148, 163, 184, 0.55);
  background: linear-gradient(135deg, rgba(148, 163, 184, 0.22) 0%, rgba(148, 163, 184, 0.08) 100%);
  box-shadow: 0 10px 26px rgba(148, 163, 184, 0.2);
  text-shadow: 0 0 10px rgba(148, 163, 184, 0.32);
}

.streak-tier-0 .streak-value {
  color: #cbd5f5;
}

.streak-tier-0 .streak-rank {
  color: #c6cfdd;
}

.streak-tier-3 {
  border-color: rgba(94, 234, 212, 0.6);
  background: linear-gradient(135deg, rgba(94, 234, 212, 0.25) 0%, rgba(20, 184, 166, 0.1) 100%);
  box-shadow: 0 11px 28px rgba(94, 234, 212, 0.25);
  text-shadow: 0 0 11px rgba(94, 234, 212, 0.35);
}

.streak-tier-3 .streak-value {
  color: #99f6e4;
}

.streak-tier-3 .streak-rank {
  color: #ccfbf1;
}

.streak-tier-5 {
  border-color: rgba(6, 182, 212, 0.7);
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.24) 0%, rgba(8, 145, 178, 0.1) 100%);
  box-shadow: 0 12px 30px rgba(6, 182, 212, 0.26);
  text-shadow: 0 0 12px rgba(6, 182, 212, 0.4);
}

.streak-tier-5 .streak-value {
  color: #67e8f9;
}

.streak-tier-5 .streak-rank {
  color: #baf5ff;
}

.streak-tier-10 {
  border-color: rgba(59, 130, 246, 0.7);
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.26) 0%, rgba(37, 99, 235, 0.12) 100%);
  box-shadow: 0 12px 30px rgba(59, 130, 246, 0.26);
  text-shadow: 0 0 12px rgba(59, 130, 246, 0.4);
}

.streak-tier-10 .streak-value {
  color: #93c5fd;
}

.streak-tier-10 .streak-rank {
  color: #dbeafe;
}

.streak-tier-20 {
  border-color: rgba(99, 102, 241, 0.75);
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.28) 0%, rgba(79, 70, 229, 0.14) 100%);
  box-shadow: 0 13px 32px rgba(99, 102, 241, 0.28);
  text-shadow: 0 0 12px rgba(99, 102, 241, 0.42);
}

.streak-tier-20 .streak-value {
  color: #c7d2fe;
}

.streak-tier-20 .streak-rank {
  color: #e0e7ff;
}

.streak-tier-30 {
  border-color: rgba(167, 139, 250, 0.8);
  background: linear-gradient(135deg, rgba(167, 139, 250, 0.3) 0%, rgba(139, 92, 246, 0.16) 100%);
  box-shadow: 0 14px 34px rgba(167, 139, 250, 0.3);
  text-shadow: 0 0 13px rgba(167, 139, 250, 0.45);
}

.streak-tier-30 .streak-value {
  color: #ddd6fe;
}

.streak-tier-30 .streak-rank {
  color: #ede9fe;
}

.streak-tier-50 {
  border-color: rgba(236, 72, 153, 0.8);
  background: linear-gradient(135deg, rgba(236, 72, 153, 0.28) 0%, rgba(219, 39, 119, 0.14) 100%);
  box-shadow: 0 14px 34px rgba(236, 72, 153, 0.28);
  text-shadow: 0 0 13px rgba(236, 72, 153, 0.45);
}

.streak-tier-50 .streak-value {
  color: #fbcfe8;
}

.streak-tier-50 .streak-rank {
  color: #fce7f3;
}

.streak-tier-75 {
  border-color: rgba(250, 204, 21, 0.8);
  background: linear-gradient(135deg, rgba(250, 204, 21, 0.28) 0%, rgba(234, 179, 8, 0.16) 100%);
  box-shadow: 0 15px 36px rgba(250, 204, 21, 0.3);
  text-shadow: 0 0 13px rgba(250, 204, 21, 0.45);
}

.streak-tier-75 .streak-value {
  color: #fde68a;
}

.streak-tier-75 .streak-rank {
  color: #fef3c7;
}

.streak-tier-100 {
  border-color: rgba(249, 115, 22, 0.85);
  background: linear-gradient(135deg, rgba(249, 115, 22, 0.3) 0%, rgba(234, 88, 12, 0.16) 100%);
  box-shadow: 0 16px 38px rgba(249, 115, 22, 0.32);
  text-shadow: 0 0 14px rgba(249, 115, 22, 0.48);
}

.streak-tier-100 .streak-value {
  color: #fed7aa;
}

.streak-tier-100 .streak-rank {
  color: #ffedd5;
}

.streak-tier-200 {
  border-color: rgba(251, 113, 133, 0.9);
  background: linear-gradient(135deg, rgba(251, 113, 133, 0.32) 0%, rgba(244, 63, 94, 0.18) 100%);
  box-shadow: 0 18px 40px rgba(251, 113, 133, 0.34);
  text-shadow: 0 0 14px rgba(251, 113, 133, 0.5);
}

.streak-tier-200 .streak-value {
  color: #fecdd3;
}

.streak-tier-200 .streak-rank {
  color: #ffe4e6;
}

/* -----------------------------
   Bloc timer (la "carte")
------------------------------ */
.timer-box {
  max-width: 320px;
  margin: 0 auto 30px auto;
  padding: 32px 24px;
  background: #ffffff;
  border: none;
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 212, 255, 0.2), 0 0 40px rgba(0, 212, 255, 0.1);
  transition: transform 0.3s ease, background 0.1s ease, box-shadow 0.3s ease;
}

.timer-box:hover {
  transform: translateY(-8px);
  box-shadow: 0 30px 80px rgba(0, 212, 255, 0.3), 0 0 60px rgba(0, 212, 255, 0.15);
}

#timer {
  font-size: 3.5rem;
  font-weight: 900;
  margin: 0;
  transition: color 0.1s ease;
  color: #000000;
  letter-spacing: -1px;
  font-variant-numeric: tabular-nums;
}

#timer.warning {
  color: #ef4444;
  animation: pulse 0.8s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* Cadre pour la phase (apparaît lors des phases actives) */
.phase-box {
  max-width: 320px;
  margin: 0 auto 30px auto;
  padding: 32px 24px;
  background: linear-gradient(135deg, #ffd700 0%, #ffed4e 100%);
  border: none;
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(255, 215, 0, 0.25);
  display: none;
  transition: background 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
  animation: slideIn 0.4s ease-out;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.phase-box.active {
  display: block;
}

.phase-box.inhale {
  background: linear-gradient(135deg, #3b82f6 0%, #60a5fa 100%);
  color: #ffffff;
  box-shadow: 0 20px 60px rgba(59, 130, 246, 0.25);
}

.phase-box.hold {
  background: linear-gradient(135deg, #8b5cf6 0%, #a78bfa 100%);
  color: #ffffff;
  box-shadow: 0 20px 60px rgba(139, 92, 246, 0.25);
}

.phase-box.exhale {
  background: linear-gradient(135deg, #f97316 0%, #fb923c 100%);
  color: #ffffff;
  box-shadow: 0 20px 60px rgba(249, 115, 22, 0.25);
}

#phase {
  font-size: 2rem;
  font-weight: 800;
  margin: 0;
  letter-spacing: -0.5px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* -----------------------------
   Bouton
------------------------------ */
button {
  margin-top: 20px;
  background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
  color: white;
  border: none;
  border-radius: 14px;
  padding: 16px 32px;
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.15s ease;
  box-shadow: 0 10px 25px rgba(34, 197, 94, 0.3);
  text-transform: uppercase;
  letter-spacing: 1px;
}

button:hover:not(.disabled) {
  transform: translateY(-3px);
  box-shadow: 0 15px 35px rgba(34, 197, 94, 0.4);
  filter: brightness(1.1);
}

button:active:not(.disabled) {
  transform: translateY(-1px);
}

button.disabled {
  background: linear-gradient(135deg, #6b7280 0%, #4b5563 100%);
  cursor: not-allowed;
  opacity: 0.5;
  box-shadow: none;
}

/* -----------------------------
   Tip Button
------------------------------ */
.tip-button {
  display: inline-block;
  margin: 30px auto 10px;
  padding: 12px 22px;
  border-radius: 999px;
  border: 2px solid rgba(250, 204, 21, 0.6);
  background: linear-gradient(135deg, rgba(250, 204, 21, 0.2) 0%, rgba(234, 179, 8, 0.08) 100%);
  color: #fde68a;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  box-shadow: 0 10px 24px rgba(250, 204, 21, 0.2);
}

.tip-button:hover {
  transform: translateY(-2px);
  border-color: rgba(250, 204, 21, 0.9);
  box-shadow: 0 14px 30px rgba(250, 204, 21, 0.3);
}

/* -----------------------------
   Petites valeurs (compteurs)
------------------------------ */
#localCount,
#countThisSecond,
#countLast5s {
  font-variant-numeric: tabular-nums;
}

/* -----------------------------
   Section Stats
------------------------------ */
.stats-section {
  margin-top: 60px;
  padding: 40px 20px;
  border-top: 2px solid rgba(0, 212, 255, 0.2);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-bottom: 40px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.stat-card {
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(0, 153, 255, 0.05) 100%);
  border: 2px solid rgba(0, 212, 255, 0.3);
  border-radius: 16px;
  padding: 24px;
  text-align: center;
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.stat-card:hover {
  transform: translateY(-5px);
  border-color: rgba(0, 212, 255, 0.6);
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.15) 0%, rgba(0, 153, 255, 0.1) 100%);
}

.stat-label {
  font-size: 0.85rem;
  color: #a0aec0;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 10px;
  font-weight: 600;
}

.stat-value {
  font-size: 2.5rem;
  font-weight: 900;
  background: linear-gradient(135deg, #00d4ff 0%, #0099ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-subtitle {
  font-size: 0.8rem;
  color: #a0aec0;
  margin-top: 8px;
  font-style: italic;
}

.waiting-stat-box {
  max-width: 600px;
  margin: 30px auto;
  padding: 30px 40px;
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.1) 0%, rgba(22, 163, 74, 0.05) 100%);
  border: 2px solid rgba(34, 197, 94, 0.3);
  border-radius: 16px;
  text-align: center;
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.waiting-stat-box:hover {
  transform: translateY(-5px);
  border-color: rgba(34, 197, 94, 0.6);
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.15) 0%, rgba(22, 163, 74, 0.1) 100%);
}

.waiting-stat-box .stat-value {
  font-size: 3.5rem;
  font-weight: 900;
  background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 10px;
}

.stat-text {
  font-size: 1.1rem;
  color: #a0aec0;
  font-style: italic;
  letter-spacing: 0.3px;
}

.waiting-stat {
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.1) 0%, rgba(22, 163, 74, 0.05) 100%);
  border-color: rgba(34, 197, 94, 0.3);
}

.waiting-stat:hover {
  border-color: rgba(34, 197, 94, 0.6);
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.15) 0%, rgba(22, 163, 74, 0.1) 100%);
}

.waiting-stat .stat-value {
  background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.chart-container {
  max-width: 900px;
  margin: 0 auto;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.05) 0%, rgba(0, 153, 255, 0.02) 100%);
  border: 2px solid rgba(0, 212, 255, 0.2);
  border-radius: 16px;
  padding: 30px;
  position: relative;
  height: 400px;
}

@media (max-width: 640px) {
  .chart-container {
    width: 100%;
    padding: 18px;
    height: 280px;
  }

  .chart-container canvas {
    width: 100% !important;
    height: 240px !important;
  }
}