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

:root {
  --brown:       #4A3728;
  --terracotta:  #C4714A;
  --terracotta-lt: #d4876a;
  --terracotta-dk: #a35a38;
  --cream:       #F7F2EA;
  --beige:       #EDE4D4;
  --sand:        #D9CCBA;
  --sage:        #7A8C6E;
  --sage-lt:     #97A980;
  --text:        #2C1F14;
  --text-muted:  #7A6A58;
  --night:       #1a2010;
  --night-lt:    #243018;

  /* ── Respiration — modifier ici ── */
  --session-bg:           #e8f0e4;
  --session-text:         #2a3a22;
  --session-img-opacity:  0.12;
  --bubble-color:         #C4714A;
  --bubble-glow:          rgba(90,130,80,0.25);
  --ring-color:           rgba(90,130,80,0.15);

  --ff-display:  'Cormorant Garamond', serif;
  --ff-body:     'DM Sans', sans-serif;

  --ease-silk:   cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

html { font-size: 16px; }

body {
  background-color: var(--cream);
  color: var(--text);
  font-family: var(--ff-body);
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  transition: background-color 1.2s var(--ease-silk), color 1.2s var(--ease-silk);
}

/* ============================================================
   SPLASH SCREEN
   ============================================================ */
#splash {
  position: fixed;
  inset: 0;
  background: url('background-flow.jpg') center center / cover no-repeat;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.2rem;
  z-index: 2000;
  cursor: pointer;
}

#splash-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(26,32,16,0.82) 0%, rgba(26,32,16,0.65) 100%);
  z-index: 0;
}

.splash-emblem {
  position: relative;
  z-index: 2;
  width: 96px; height: 96px;
  border-radius: 50%;
  overflow: hidden;
  border: 1px solid rgba(247,242,234,0.3);
  box-shadow: 0 0 40px rgba(0,0,0,0.4);
}
.splash-emblem img {
  width: 100%; height: 100%;
  object-fit: cover;
}

.splash-title {
  position: relative; z-index: 2;
  font-family: var(--ff-display);
  font-size: clamp(2rem, 7vw, 3rem);
  font-weight: 300;
  letter-spacing: 0.05em;
  color: var(--cream);
}
.splash-title em {
  font-style: italic;
  color: var(--terracotta-lt);
}

.splash-sub {
  position: relative; z-index: 2;
  font-family: var(--ff-display);
  font-style: italic;
  font-size: 1rem;
  color: rgba(247,242,234,0.65);
  letter-spacing: 0.08em;
}

.splash-hint {
  position: relative; z-index: 2;
  font-family: var(--ff-body);
  font-size: 0.65rem;
  color: rgba(247,242,234,0.35);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  position: absolute;
  bottom: 2.5rem;
}

@keyframes fade-up {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

#splash.splash-out { opacity: 0; pointer-events: none; transition: opacity 0.9s var(--ease-silk); }

.app-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.9rem 1.5rem;
  background:
    linear-gradient(rgba(247,242,234,0.93), rgba(247,242,234,0.93)),
    url('background-flow.jpg') center/cover no-repeat;
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(196,113,74,0.15);
  position: sticky; top: 0; z-index: 100;
  gap: 1rem;
}
.header-logo { display: flex; align-items: center; gap: 0.6rem; text-decoration: none; }
.header-logo img { height: 26px; width: auto; }
.header-logo-name {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.05rem; font-weight: 400;
  letter-spacing: 0.03em; color: var(--brown);
}
.header-logo-name span { color: var(--terracotta); }
.header-center { text-align: center; flex: 1; }
.header-center h1 {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(1.1rem, 3vw, 1.6rem);
  font-weight: 300; color: var(--brown); line-height: 1.1;
}
.header-center h1 em { font-style: italic; color: var(--terracotta); }
.header-center p {
  font-size: 0.67rem; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--text-muted); margin-top: 0.1rem;
}
.header-back {
  font-size: 0.78rem; color: var(--text-muted);
  border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s; white-space: nowrap;
}
.header-back:hover { color: var(--terracotta); border-color: var(--terracotta); }
@media (max-width: 380px) { .header-back { display: none; } }

@media (max-width: 600px) {
  .app-header { padding: 0.7rem 1rem; }
  .header-logo-name { display: none; }
  .header-center h1 { font-size: 1.1rem; }
}

/* ============================================================
   APP — layout
   ============================================================ */
#app {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}
#app.hidden { display: none; }
#app.app-in { animation: app-reveal 0.8s var(--ease-silk) both; }

@keyframes app-reveal {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

body:has(#app.app-in:not(.hidden)) {
  background-color: var(--cream);
  color: var(--text);
}

/* ============================================================
   APP CARD
   ============================================================ */
.app-card {
  text-align: center;
  width: 90%;
  max-width: 400px;
  padding: 1.5rem 0 2rem;
}

/* ============================================================
   HEADER (interne)
   ============================================================ */
header { margin-bottom: 1.2rem; }

.header-top {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  margin-bottom: 6px;
}

/* Toggle son — aligné dans le app-header sticky */
.sound-btn {
  background: transparent;
  border: 1px solid rgba(74,55,40,0.2);
  border-radius: 50%;
  width: 32px; height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--terracotta);
  font-size: 0.85rem;
  transition: border-color 0.2s, color 0.2s, opacity 0.2s;
  flex-shrink: 0;
}
.sound-btn:hover { border-color: var(--terracotta); }
.sound-btn.sound-off {
  color: rgba(74,55,40,0.25);
  border-color: rgba(74,55,40,0.1);
}

/* ============================================================
   STATS
   ============================================================ */
#stats-container {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  margin-bottom: 10px;
  font-size: 0.85rem;
  color: var(--terracotta);
  font-weight: 500;
  letter-spacing: 0.05em;
  transition: opacity 0.8s ease;
}

@keyframes streak-pop {
  0%   { transform: scale(1); }
  50%  { transform: scale(1.6); color: var(--terracotta-lt); }
  100% { transform: scale(1); }
}
.streak-bump { animation: streak-pop 0.5s var(--ease-spring); }

/* ============================================================
   STREAK BADGE
   ============================================================ */
.streak-badge {
  font-family: var(--ff-display);
  font-style: italic;
  font-size: 1rem;
  color: var(--terracotta-dk);
  background: rgba(196,113,74,0.07);
  border: 1px solid var(--ring-color);
  border-radius: 2px;
  padding: 10px 16px;
  margin-bottom: 10px;
  animation: badge-in 0.6s var(--ease-spring) both;
}
.streak-badge.hidden { display: none; }

@keyframes badge-in {
  from { opacity: 0; transform: scale(0.9) translateY(-6px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

/* ============================================================
   STATUS
   ============================================================ */
#status {
  font-family: var(--ff-display);
  font-style: italic;
  color: var(--text-muted);
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  margin-bottom: 18px;
  min-height: 20px;
  transition: opacity 3s ease, color 1.2s var(--ease-silk);
}

/* ============================================================
   VUES
   ============================================================ */
.view {
  display: none;
  flex-direction: column;
  gap: 10px;
  width: 100%;
  animation: fadeIn 0.4s var(--ease-silk);
}
.view.active { display: flex; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   CARTES
   ============================================================ */
.card {
  background: rgba(237,228,212,0.6);
  border: 1px solid var(--sand);
  border-radius: 2px;
  padding: 15px 18px;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.25s ease, background 0.25s ease, transform 0.2s ease;
}
.card:hover {
  border-color: var(--terracotta);
  background: rgba(237,228,212,0.9);
}
.card:active { transform: scale(0.98); }

.card h3 {
  font-family: var(--ff-display);
  font-size: 1.05rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--brown);
  margin-bottom: 4px;
}
.card p {
  font-family: var(--ff-display);
  font-style: italic;
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.4;
}

/* ============================================================
   RAPPEL LINK
   ============================================================ */
.reminder-link {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: var(--ff-display);
  font-style: italic;
  font-size: 0.95rem;
  cursor: pointer;
  padding: 6px 0 0;
  letter-spacing: 0.04em;
  transition: color 0.2s;
  text-align: center;
}
.reminder-link:hover { color: var(--terracotta); }

/* ============================================================
   VUE RAPPEL
   ============================================================ */
.reminder-box {
  background: rgba(237,228,212,0.6);
  border: 1px solid var(--sand);
  border-radius: 2px;
  padding: 28px 24px;
  text-align: center;
}
.reminder-ornament { margin-bottom: 10px; }
.reminder-ornament img { width: 48px; height: 48px; object-fit: contain; }
.reminder-title {
  font-family: var(--ff-display);
  font-size: 1.2rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--brown);
  margin-bottom: 10px;
}
.reminder-desc {
  font-family: var(--ff-display);
  font-style: italic;
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.5;
  margin-bottom: 20px;
}
.time-input {
  font-family: var(--ff-display);
  font-size: 2rem;
  letter-spacing: 0.1em;
  color: var(--brown);
  border: none;
  border-bottom: 1px solid var(--sand);
  background: transparent;
  text-align: center;
  width: 100%;
  padding: 8px 0 10px;
  margin-bottom: 20px;
  outline: none;
  cursor: pointer;
}
.time-input:focus { border-bottom-color: var(--terracotta); }

/* ============================================================
   VISUALISEUR — style immersif inspiré Memento Mori
   ============================================================ */
.visualizer {
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  margin: 1rem 0;
}

/* Cercles qui pulsent */
.breath-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--ring-color);
  transform: scale(1);
}
.breath-ring:nth-child(1) { width: 130px; height: 130px; }
.breath-ring:nth-child(2) { width: 190px; height: 190px; opacity: 0.6; }
.breath-ring:nth-child(3) { width: 250px; height: 250px; opacity: 0.3; }

/* Cercle guide central */
#guide-circle {
  position: absolute;
  width: 70px; height: 70px;
  background: var(--bubble-color);
  border-radius: 50%;
  box-shadow: 0 0 50px var(--bubble-glow);
  transition: transform 1s cubic-bezier(0.4, 0, 0.6, 1);
  transform: scale(1);
  z-index: 2;
  transform: scale(1);
}
.apnea-active {
  box-shadow: 0 0 80px var(--bubble-glow), 0 0 0 1px rgba(247,242,234,0.3) !important;
}

/* Timer rétention */
#hold-timer {
  position: absolute;
  z-index: 3;
  font-family: var(--ff-display);
  font-size: 1.2rem;
  letter-spacing: 0.1em;
  color: rgba(247,242,234,0.8);
  opacity: 0;
  transition: opacity 0.5s ease;
  pointer-events: none;
}
#hold-timer.visible { opacity: 1; }

/* ============================================================
   BOUTONS
   ============================================================ */
.back-btn {
  background: transparent;
  color: var(--text-muted);
  border: none;
  cursor: pointer;
  text-align: left;
  padding: 5px 0;
  font-family: var(--ff-display);
  font-style: italic;
  font-size: 1rem;
  transition: color 0.2s;
}
.back-btn:hover { color: var(--terracotta); }

.primary-btn {
  background: var(--brown);
  color: var(--cream);
  border: none;
  padding: 14px;
  border-radius: 2px;
  font-family: var(--ff-display);
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  width: 100%;
  cursor: pointer;
  transition: background 0.2s, box-shadow 0.2s;
}
.primary-btn:hover {
  background: var(--terracotta);
  box-shadow: 0 4px 20px rgba(196,113,74,0.3);
}

.outline-btn {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--sand);
  padding: 12px;
  border-radius: 2px;
  width: 100%;
  margin-top: 8px;
  cursor: pointer;
  font-family: var(--ff-body);
  font-size: 0.88rem;
  letter-spacing: 0.04em;
  transition: border-color 0.2s, color 0.2s;
}
.outline-btn:hover {
  border-color: var(--terracotta);
  color: var(--terracotta);
}

/* ============================================================
   PROGRESSION
   ============================================================ */
#progress-zone { width: 100%; transition: opacity 0.8s ease; }
.progress-bar-container {
  width: 100%; height: 1px;
  background: rgba(196,113,74,0.2);
  overflow: hidden;
}
#progress-fill {
  height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--terracotta-dk), var(--terracotta-lt));
  transition: width 1s linear;
}
#time-left {
  font-family: var(--ff-display);
  font-size: 0.92rem;
  font-weight: 300;
  letter-spacing: 0.25em;
  color: rgba(196,113,74,0.55);
  margin-top: 10px;
  transition: all 0.8s ease;
}

/* ============================================================
   ÉCRAN FIN
   ============================================================ */
#end-title {
  font-family: var(--ff-display);
  font-size: 2rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: var(--brown);
  margin-bottom: 0.5rem;
}
#coaching-tip {
  font-family: var(--ff-display);
  font-style: italic;
  color: var(--text-muted);
  padding: 18px 22px;
  background: rgba(237,228,212,0.6);
  border: 1px solid var(--sand);
  border-radius: 2px;
  margin: 8px 0 18px;
  font-size: 1.05rem;
  line-height: 1.6;
  text-align: left;
}
#coaching-tip::before {
  content: '✦';
  display: block;
  color: var(--terracotta);
  font-style: normal;
  margin-bottom: 8px;
  font-size: 0.7rem;
  letter-spacing: 0.5em;
  text-align: center;
}

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  margin-top: 1.5rem;
  border-top: 1px solid var(--sand);
  padding-top: 1rem;
  transition: opacity 0.8s ease;
}
.learn-more {
  font-family: var(--ff-display);
  font-style: italic;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}
.learn-more:hover { color: var(--terracotta); }

/* ============================================================
   MODE IMMERSIF
   ============================================================ */
.session-mode {
  background-color: var(--session-bg, var(--cream)) !important;
  background-image:
    radial-gradient(ellipse 70% 55% at 50% 45%, var(--session-halo, rgba(196,113,74,0.22)) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 20% 85%, var(--session-halo, rgba(196,113,74,0.06)) 0%, transparent 60%) !important;
  transition: background-color 0.8s ease, background-image 0.8s ease;
  color: var(--session-text, var(--brown));
  position: relative;
}
.session-mode::before {
  content: '';
  position: fixed;
  inset: 0;
  background: url('background-flow.jpg') center/cover no-repeat;
  opacity: var(--session-img-opacity, 0.12);
  pointer-events: none;
  z-index: 0;
  transition: opacity 0.8s ease;
}
.session-mode > * { position: relative; z-index: 1; }
.session-mode .app-card { position: relative; z-index: 2; }
.session-mode .breath-ring { border-color: var(--ring-color, rgba(74,55,40,0.15)); }
.session-mode #status {
  font-family: var(--ff-display);
  font-style: italic;
  font-size: clamp(1.4rem, 4vw, 2rem);
  color: var(--session-text, var(--brown));
  letter-spacing: 0.05em;
  text-align: center;
}
.session-mode .app-header { visibility: hidden; }
.session-mode footer { opacity: 0; pointer-events: none; }
.session-mode #stats-container { opacity: 0; pointer-events: none; }
.session-mode .sound-btn { opacity: 0; pointer-events: none; }
.session-mode #progress-zone { opacity: 0.45; }
.session-mode #time-left { font-size: 0.72rem; text-align: center; color: var(--session-text, var(--brown)); }
.session-mode #btn-stop { opacity: 0.3; transition: opacity 0.3s; color: var(--session-text, var(--brown)); border-color: var(--session-text, var(--brown)); }
.session-mode #btn-stop:hover { opacity: 0.8; }

.text-hidden { opacity: 0 !important; }