/* ============================
   1. Reset / contraintes tactiles
   ============================ */
html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  overscroll-behavior: none;
  touch-action: none;
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
  -webkit-tap-highlight-color: transparent;
  font-family: sans-serif;
}

* {
  box-sizing: border-box;
}

/* ============================
   2. Variables CSS
   ============================ */
:root {
  --transition-duration: 1.6s;

  /* Nuit : jamais de blanc pur, tons tamisés */
  --night-sky-top: #0b1026;
  --night-sky-bottom: #1c2444;
  --night-moon-color: #f2ecd8;
  --night-moon-shadow: #cfc7a8;
  --night-glow: rgba(242, 236, 216, 0.18);

  /* Jour : lumineux */
  --day-sky-top: #7fc7f0;
  --day-sky-bottom: #ffe9a8;
  --day-sun-core: #ffd23f;
  --day-sun-edge: #ff9d3f;
  --day-glow: rgba(255, 210, 63, 0.35);

  --progress-track: rgba(255, 255, 255, 0.10);
  --progress-fill: var(--night-moon-color);
}

/* ============================
   3. Layout plein écran
   ============================ */
body {
  position: relative;
  width: 100vw;
  height: 100vh;
  background: var(--night-sky-bottom); /* fond de secours avant chargement du CSS des scenes */
}

.scene {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-duration) ease,
              visibility 0s linear var(--transition-duration);
}

/* ============================
   4. Décor nuit / jour
   ============================ */
.scene--night {
  background: linear-gradient(to bottom, var(--night-sky-top), var(--night-sky-bottom));
}

/* Ciel étoilé : calque séparé (animable indépendamment du fond et de la lune) */
.scene--night::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1.6px 1.6px at 8% 12%,  rgba(255,255,255,0.9), transparent),
    radial-gradient(1.2px 1.2px at 16% 28%, rgba(255,255,255,0.6), transparent),
    radial-gradient(1.8px 1.8px at 22% 8%,  rgba(255,255,255,0.8), transparent),
    radial-gradient(1.2px 1.2px at 30% 45%, rgba(255,255,255,0.5), transparent),
    radial-gradient(1.6px 1.6px at 38% 18%, rgba(255,255,255,0.7), transparent),
    radial-gradient(1.2px 1.2px at 45% 60%, rgba(255,255,255,0.5), transparent),
    radial-gradient(1.8px 1.8px at 52% 30%, rgba(255,255,255,0.9), transparent),
    radial-gradient(1.2px 1.2px at 6%  55%, rgba(255,255,255,0.6), transparent),
    radial-gradient(1.6px 1.6px at 12% 78%, rgba(255,255,255,0.7), transparent),
    radial-gradient(1.2px 1.2px at 20% 92%, rgba(255,255,255,0.5), transparent),
    radial-gradient(1.8px 1.8px at 28% 68%, rgba(255,255,255,0.8), transparent),
    radial-gradient(1.2px 1.2px at 36% 88%, rgba(255,255,255,0.5), transparent),
    radial-gradient(1.6px 1.6px at 5%  35%, rgba(255,255,255,0.6), transparent),
    radial-gradient(1.2px 1.2px at 44% 8%,  rgba(255,255,255,0.5), transparent),
    radial-gradient(2px   2px   at 3%  70%, rgba(255,255,255,0.9), transparent),
    radial-gradient(1.6px 1.6px at 48% 82%, rgba(255,255,255,0.7), transparent),
    radial-gradient(1.2px 1.2px at 25% 25%, rgba(255,255,255,0.6), transparent),
    radial-gradient(1.8px 1.8px at 40% 70%, rgba(255,255,255,0.8), transparent),
    radial-gradient(1.2px 1.2px at 10% 45%, rgba(255,255,255,0.5), transparent),
    radial-gradient(1.6px 1.6px at 32% 5%,  rgba(255,255,255,0.7), transparent);
  animation: twinkle 6s ease-in-out infinite;
}

@keyframes twinkle {
  0%, 100% { opacity: 0.65; }
  50%      { opacity: 1; }
}

.scene--day {
  background: linear-gradient(to bottom, var(--day-sky-top), var(--day-sky-bottom));
}

body[data-mode="nuit"] .scene--night,
body[data-mode="jour"] .scene--day {
  opacity: 1;
  visibility: visible;
  transition-delay: 0s;
}

/* ============================
   5. Lune (CSS pur)
   ============================ */
.moon {
  position: absolute;
  top: 15%;
  right: 18%;
  width: 22vmin;
  height: 22vmin;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, var(--night-moon-color), var(--night-moon-shadow) 80%);
  box-shadow: 0 0 6vmin var(--night-glow);
  overflow: hidden;
}

.moon-crater {
  position: absolute;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.08);
}

.moon-crater--1 {
  width: 25%;
  height: 25%;
  top: 20%;
  left: 55%;
}

.moon-crater--2 {
  width: 15%;
  height: 15%;
  top: 55%;
  left: 20%;
}

.moon-crater--3 {
  width: 18%;
  height: 18%;
  top: 60%;
  left: 60%;
}

/* ============================
   6. Soleil (CSS pur)
   ============================ */
.sun {
  position: absolute;
  top: 18%;
  right: 20%;
  width: 20vmin;
  height: 20vmin;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, var(--day-sun-core), var(--day-sun-edge) 85%);
  box-shadow: 0 0 8vmin var(--day-glow);
}

.sun-ray {
  /* Origine (0 0) = coin haut-gauche de la barre, positionné pile au centre
     du soleil (top/left: 50% du .sun). translateY pousse d'abord la barre
     vers l'extérieur (rayon du soleil + espace), puis rotate() la fait
     pivoter autour de ce même point central : la barre reste ainsi bien
     radiale, quel que soit l'angle. */
  position: absolute;
  top: 50%;
  left: 50%;
  width: 3px;
  height: 4vmin;
  background: var(--day-sun-edge);
  border-radius: 999px;
  transform-origin: 0 0;
  transform: rotate(var(--ray-angle, 0deg)) translateY(-14.5vmin);
}

.sun-ray--1 { --ray-angle: 0deg; }
.sun-ray--2 { --ray-angle: 45deg; }
.sun-ray--3 { --ray-angle: 90deg; }
.sun-ray--4 { --ray-angle: 135deg; }
.sun-ray--5 { --ray-angle: 180deg; }
.sun-ray--6 { --ray-angle: 225deg; }
.sun-ray--7 { --ray-angle: 270deg; }
.sun-ray--8 { --ray-angle: 315deg; }

/* ============================
   8. Barre de progression
   ============================ */
.progress-container {
  position: fixed;
  left: 6%;
  right: 6%;
  bottom: 7%;
  height: 28px;
  opacity: 1;
  visibility: visible;
  transition: opacity var(--transition-duration) ease,
              visibility 0s linear var(--transition-duration);
}

body[data-mode="jour"] .progress-container {
  opacity: 0;
  visibility: hidden;
}

.progress-bar {
  position: relative;
  height: 100%;
  border-radius: 999px;
  background: var(--progress-track);
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.3);
  overflow: hidden;
}

.progress-bar::before {
  content: "";
  display: block;
  height: 100%;
  width: var(--progress, 0%);
  border-radius: 999px;
  background: linear-gradient(90deg, var(--night-moon-shadow), var(--night-moon-color));
  box-shadow: 0 0 18px 2px var(--night-glow);
  transition: width 1s linear;
}

/* ============================
   9. Bouton plein écran
   ============================ */
.btn-fullscreen {
  position: fixed;
  right: 5%;
  bottom: 12%;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.12);
  color: var(--night-moon-color);
  cursor: pointer;
}

body[data-mode="jour"] .btn-fullscreen {
  color: #6b4a1a;
  background: rgba(255, 255, 255, 0.35);
}

/* ============================
   10. Zone de réglages (appui simple, discret)
   ============================ */
.settings-trigger-zone {
  position: fixed;
  top: 3%;
  right: 3%;
  width: 44px;
  height: 44px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: var(--night-moon-color);
  opacity: 0.25;
  display: flex;
  align-items: center;
  justify-content: center;
}

body[data-mode="jour"] .settings-trigger-zone {
  color: #6b4a1a;
}

/* ============================
   11. Panneau réglages
   ============================ */
.settings-panel {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.6);
  color: #fff;
  z-index: 10;
}

.settings-panel:not([hidden]) {
  display: flex;
}

.settings-content {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1.5rem;
  background: #222;
  border-radius: 12px;
  min-width: 240px;
}

.settings-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.settings-field label {
  font-size: 0.9rem;
  color: #ccc;
}

.settings-field input {
  font-size: 1.1rem;
  padding: 0.4rem;
}

.settings-field--simulate {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: 1rem;
}

.settings-field--alarm {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: 1rem;
  flex-direction: row;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.settings-field--alarm label {
  flex: 1 1 auto;
}

#settings-alarm-test {
  padding: 0.4rem 0.8rem;
  font-size: 0.9rem;
  border: none;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  cursor: pointer;
}

.settings-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
  margin-top: 0.5rem;
}

.settings-actions button {
  padding: 0.6rem 1.2rem;
  font-size: 1rem;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

#settings-save {
  background: var(--day-sun-core);
  color: #222;
}

#settings-close {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
}

/* ============================
   12. Dégradation : mouvement réduit
   ============================ */
@media (prefers-reduced-motion: reduce) {
  .scene,
  .progress-container,
  .progress-bar::before {
    transition: none;
  }
  .scene--night::after {
    animation: none;
  }
}