/* ==========================================================
   Dessins à colorier — UI pro (sans framework)
   - Layout responsive (panneau + zone canvas)
   - Unités adaptatives (clamp / % / vw / lvh)
   - Touch friendly (tablette + stylet)
========================================================== */

:root{
  --bg: #0b1220;
  --surface: rgba(255,255,255,.06);
  --surface-2: rgba(255,255,255,.10);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.70);
  --border: rgba(255,255,255,.14);
  --shadow: 0 18px 50px rgba(0,0,0,.45);
  --accent: #22c55e;
  --danger: #ef4444;
  --warn: #f59e0b;

  --radius: 1.25rem;
  --pad: min(5rem, 8%);
  --gap: clamp(.6rem, 1.2vw, 1rem);
  --font: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;

  --appbar-h: 74px; /* ajuste si besoin */
}

*{ box-sizing: border-box; }
html,body{ height: 100%; }
body{
  margin: 0;
  font-family: var(--font);
  background: radial-gradient(1200px 600px at 15% 10%, rgba(59,130,246,.25), transparent 55%),
              radial-gradient(900px 500px at 90% 20%, rgba(168,85,247,.22), transparent 55%),
              radial-gradient(900px 600px at 50% 90%, rgba(34,197,94,.18), transparent 60%),
              var(--bg);
  color: var(--text);
  overflow: hidden; /* la page ne scrolle pas, chaque zone scrolle si besoin */
}
a {
  color: var(--accent);
  text-decoration: none;
}
/* ----------------- AppBar ----------------- */
.appbar{
  position: sticky;
  top: 0;
  z-index: 50;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--gap);
  padding: clamp(.7rem, 1.6vw, 1rem) clamp(.9rem, 2vw, 1.2rem);
  border-bottom: 1px solid var(--border);
  background: rgba(7,10,18,.75);
  backdrop-filter: blur(14px);
}

.brand{
  display: flex;
  align-items: center;
  gap: clamp(.6rem, 1.4vw, 1rem);
  min-width: 0;
}
.brand__logo{
  width: clamp(2rem, 4vw, 2.6rem);
  height: clamp(2rem, 4vw, 2.6rem);
  border-radius: .85rem;
  background: rgba(255,255,255,.08);
  padding: .2rem;
  object-fit: cover;
}
.brand__title{
  margin: 0;
  font-size: clamp(1.05rem, 1.8vw, 1.35rem);
  letter-spacing: .02em;
}
.brand__sub{
  margin: 0;
  font-size: clamp(.82rem, 1.35vw, .95rem);
  color: var(--muted);
  line-height: 1.25;
  max-width: 70ch;
}

.iconbtn{
  border: 1px solid var(--border);
  background: rgba(255,255,255,.06);
  color: var(--text);
  border-radius: .9rem;
  padding: .55rem .75rem;
  cursor: pointer;
  font-size: 1.05rem;
  display: none;
}
.iconbtn:hover{ background: rgba(255,255,255,.10); }

.appbar__actions{
  display: flex;
  align-items: center;
  gap: .45rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

/* ----------------- Boutons ----------------- */
.btn{
  border: 1px solid var(--border);
  background: rgba(255,255,255,.06);
  color: var(--text);
  border-radius: 1rem;
  padding: .55rem .8rem;
  font-size: clamp(.86rem, 1.25vw, .95rem);
  cursor: pointer;
  transition: transform .06s ease, background .15s ease, border-color .15s ease;
  user-select: none;
}
.btn:hover{ background: rgba(255,255,255,.10); }
.btn:active{ transform: translateY(1px); }

.btn--primary{
  border-color: rgba(34,197,94,.35);
  background: rgba(34,197,94,.14);
}
.btn--primary:hover{ background: rgba(34,197,94,.20); }

.btn--ghost{
  border-style: dashed;
}

.btn--danger{
  border-color: rgba(239,68,68,.35);
  background: rgba(239,68,68,.12);
}
.btn--danger:hover{ background: rgba(239,68,68,.18); }

/* ----------------- Layout ----------------- */
.layout{
  height: calc(100dvh - 74px);
  display: grid;
  grid-template-columns: clamp(18rem, 28vw, 24rem) 1fr;
  gap: var(--gap);
  padding: clamp(.7rem, 1.6vw, 1rem);
}

.panel{
  background: rgba(255,255,255,.05);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: auto;
  padding: .8rem;
}
.panelTop{
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
  padding: .6rem .2rem .8rem;
  background: #111827;
  border-bottom: 1px solid rgba(255,255,255,.10);
  display: none;
}

.panelTop__title{
  font-weight: 750;
  letter-spacing: .02em;
  font-size: clamp(1rem, 2vw, 1.15rem);
}

.stage{
  position: relative;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: rgba(255,255,255,.03);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.canvasWrap{
  position: absolute;
  inset: 0;
  padding: clamp(.6rem, 1.6vw, 1rem);
}
#coloringCanvas{
  width: 100%;
  height: 100%;
  display: block;
  border-radius: calc(var(--radius) - .35rem);
  background: #ffffff;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.12);
  touch-action: none; /* indispensable pour pointer events sur tablette */
}

/* ----------------- Cartes ----------------- */
.card{
  background: rgba(0,0,0,.18);
  border: 1px solid var(--border);
  border-radius: 1.2rem;
  padding: .85rem;
  margin-bottom: .8rem;
}
.card__title{
  margin: 0 0 .7rem 0;
  font-size: clamp(.95rem, 1.6vw, 1.05rem);
  color: rgba(255,255,255,.92);
  letter-spacing: .02em;
}

.help{
  margin: .65rem 0 0 0;
  color: var(--muted);
  font-size: clamp(.78rem, 1.2vw, .88rem);
  line-height: 1.35;
}

.label{
  font-weight: 650;
  font-size: clamp(.86rem, 1.25vw, .95rem);
}
.label--small{
  font-weight: 600;
  opacity: .9;
}

/* ----------------- Rows ----------------- */
.row{
  display: flex;
  align-items: center;
}
.row--gap{ gap: .6rem; }
.row--wrap{ flex-wrap: wrap; }

.pill{
  border: 1px solid var(--border);
  background: rgba(255,255,255,.07);
  padding: .25rem .55rem;
  border-radius: 999px;
  font-size: .85rem;
  color: var(--muted);
}

/* ----------------- Thumbnails ----------------- */
.thumbs{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .55rem;
  margin-bottom: .7rem;
}
.thumb{
  border: 1px solid var(--border);
  background: rgba(255,255,255,.05);
  border-radius: 1rem;
  padding: .25rem;
  cursor: pointer;
  overflow: hidden;
}
.thumb img{
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  display: block;
  border-radius: .85rem;
  filter: contrast(1.05);
}
.thumb.is-active{
  outline: 2px solid rgba(34,197,94,.65);
  outline-offset: 1px;
}

/* ----------------- Palette ----------------- */
.tool{ margin-top: .6rem; }
.tool__head{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .6rem;
  margin-bottom: .45rem;
}

.palette{
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  margin-bottom: .55rem;
}

.color{
  width: clamp(1.7rem, 2.8vw, 2.1rem);
  height: clamp(1.7rem, 2.8vw, 2.1rem);
  border-radius: .75rem;
  border: 1px solid rgba(255,255,255,.25);
  cursor: pointer;
  position: relative;
}
.color.active{
  outline: 2px solid rgba(255,255,255,.85);
  outline-offset: 2px;
}

.swatch{
  width: 1.4rem;
  height: 1.4rem;
  border-radius: .5rem;
  border: 1px solid rgba(255,255,255,.25);
  background: #111827;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.2);
}

input[type="color"]{
  width: 3rem;
  height: 2.3rem;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: .75rem;
  background: rgba(255,255,255,.06);
}

/* ----------------- Range ----------------- */
.range{
  width: 100%;
  accent-color: var(--accent);
}

.brushPreview{
  width: 3.1rem;
  height: 3.1rem;
  border-radius: 1rem;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.06);
  display: grid;
  place-items: center;
  flex: 0 0 auto;
}
.brushPreview::before{
  content: "";
  width: 18px;
  height: 18px;
  border-radius: 999px;
  background: #111827;
  display: block;
}

/* ----------------- Saved list ----------------- */
.savedList{
  display: grid;
  gap: .55rem;
}
.savedItem{
  border: 1px solid var(--border);
  background: rgba(255,255,255,.05);
  border-radius: 1rem;
  padding: .6rem;
}
.savedItem__top{
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: .6rem;
}
.savedItem__name{
  margin: 0;
  font-size: .95rem;
}
.savedItem__date{
  margin: .2rem 0 0 0;
  color: var(--muted);
  font-size: .82rem;
}
.savedItem__actions{
  display: flex;
  gap: .4rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.savedItem__actions .btn{
  padding: .35rem .55rem;
  border-radius: .85rem;
}

/* ----------------- Toast ----------------- */
.toast{
  position: absolute;
  left: 50%;
  bottom: 1rem;
  transform: translateX(-50%);
  background: rgba(0,0,0,.65);
  border: 1px solid rgba(255,255,255,.20);
  color: rgba(255,255,255,.92);
  padding: .5rem .85rem;
  border-radius: 999px;
  font-size: .9rem;
  backdrop-filter: blur(10px);
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease;
}
.toast.is-on{
  opacity: 1;
  transform: translateX(-50%) translateY(-2px);
}

/* ----------------- Footer ----------------- */
.footer{
  padding: .55rem 1rem 1rem;
  color: var(--muted);
  font-size: .82rem;
}
.thumbs{
  grid-template-columns: repeat(3, 1fr);
  gap: .55rem;
}
.thumb{ padding: .25rem; }

/* ----------------- Mobile / tablette ----------------- */
@media (max-width: 980px){
  body{ overflow: auto; }
  .layout{
    height: auto;
    grid-template-columns: 1fr;
  }
  .stage{
    min-height: 70lvh;
  }
  .panelTop, .iconbtn{
    display: flex;
  }
  .panel{
    position: fixed;
    inset: 0;
    z-index: 60;
    background-color: #111827;
    border-radius: 0;
    transform: translateX(-105%);
    transition: transform .22s ease;
    padding: 1rem;
  }
  .panel.is-open{ transform: translateX(0); }
  
}
@media (max-width: 980px){
  .thumbs{
    grid-template-columns: repeat(4, 1fr);
    gap: .4rem;
  }
  .thumb{
    border-radius: .9rem;
    padding: .18rem;
  }
  .thumb img{
    border-radius: .75rem;
  }
}

@media (max-width: 420px){
  .thumbs{ grid-template-columns: repeat(3, 1fr); }
}

@media (prefers-reduced-motion: reduce){
  *{ transition: none !important; }
}