/* =========================================================================
   TONA — Cartes (application de révision)
   Prolonge le système « Signal & Interférence » de style.css
   ========================================================================= */

/* ----- Coquille de l'app ------------------------------------------------- */
.app {
  display: grid;
  gap: clamp(1.5rem, 1rem + 2vw, 2.5rem);
}
.app__head {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem;
}
.app__title { font-size: var(--step-2); }
.app__actions { display: flex; flex-wrap: wrap; gap: 0.7rem; }

.empty {
  border: 1px dashed var(--line-2); border-radius: var(--radius-lg);
  padding: clamp(2rem, 1.4rem + 2vw, 3rem); text-align: center;
  display: grid; gap: 1rem; justify-items: center;
}
.empty p { color: var(--muted); max-width: 46ch; }

/* ----- Grille des paquets ------------------------------------------------ */
.decks { display: grid; gap: 1.1rem; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.deckcard {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: clamp(1.3rem, 1rem + 1vw, 1.7rem); display: grid; gap: 0.9rem; align-content: start;
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}
.deckcard:hover { border-color: var(--line-2); transform: translateY(-2px); }
.deckcard__top { display: flex; justify-content: space-between; align-items: start; gap: 0.8rem; }
.deckcard__title { font-family: var(--f-display); font-size: var(--step-1); line-height: 1.2; }
.deckcard__desc { color: var(--muted); font-size: var(--step--1); line-height: 1.5; }
.deckcard__meta { font-family: var(--f-mono); font-size: 0.7rem; letter-spacing: 0.06em; color: var(--faint); display: flex; gap: 0.9rem; flex-wrap: wrap; }
.deckcard__meta b { color: var(--amber); }

.progressbar { height: 5px; border-radius: 3px; background: var(--line); overflow: hidden; }
.progressbar > span { display: block; height: 100%; background: linear-gradient(90deg, var(--amber), var(--amber-deep)); border-radius: 3px; transition: width 0.3s var(--ease); }
.progressbar--muted > span { background: var(--coral); }

.deckcard__row { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.badge {
  font-family: var(--f-mono); font-size: 0.65rem; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--faint); border: 1px solid var(--line-2); border-radius: 999px; padding: 0.25em 0.7em;
}
.badge--amber { color: var(--amber); border-color: color-mix(in srgb, var(--amber) 45%, transparent); }

/* ----- Boutons compacts (app) -------------------------------------------- */
.btn--sm { padding: 0.55em 0.95em; font-size: 0.72rem; }
.btn--ghost { border-color: transparent; color: var(--muted); }
.btn--ghost:hover { border-color: var(--line-2); color: var(--paper); }
.btn--danger { color: var(--coral); }
.btn--danger:hover { border-color: var(--coral); }
.btn:disabled, .btn[disabled] { opacity: 0.35; pointer-events: none; }

.iconbtn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: var(--radius); border: 1px solid var(--line-2);
  color: var(--muted); transition: border-color 0.2s, color 0.2s;
  font-family: var(--f-mono); font-size: 0.95rem;
}
.iconbtn:hover { color: var(--paper); border-color: var(--paper); }

/* ----- Formulaires -------------------------------------------------------- */
.field { display: grid; gap: 0.5rem; }
.field label { font-family: var(--f-mono); font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--faint); }
.field input[type="text"], .field textarea, .field select {
  width: 100%; background: var(--ink); border: 1px solid var(--line-2); border-radius: var(--radius);
  color: var(--paper); font-family: var(--f-body); font-size: var(--step-0); padding: 0.75em 0.9em;
  transition: border-color 0.2s;
}
.field input[type="text"]:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--amber); }
.field textarea { resize: vertical; min-height: 4.5em; line-height: 1.55; }
.field--row { display: grid; gap: 1rem; grid-template-columns: 1fr 1fr; }
@media (max-width: 620px) { .field--row { grid-template-columns: 1fr; } }
.hint { font-size: var(--step--1); color: var(--faint); }

/* ----- Éditeur de paquet -------------------------------------------------- */
.editor__meta { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: clamp(1.3rem, 1rem + 1vw, 1.8rem); display: grid; gap: 1rem; }
.editor__cards { display: grid; gap: 0.9rem; }
.cardrow {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 1.1rem 1.2rem; display: grid; gap: 0.8rem; grid-template-columns: 2rem 1fr 1fr 2.2rem;
  align-items: start;
}
@media (max-width: 780px) { .cardrow { grid-template-columns: 1fr; } }
.cardrow__n { font-family: var(--f-mono); font-size: 0.72rem; color: var(--faint); padding-top: 0.8em; }
.cardrow__del { justify-self: end; }

/* ----- Barre d'étude ------------------------------------------------------ */
.studybar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.studybar__stats { font-family: var(--f-mono); font-size: 0.75rem; color: var(--muted); display: flex; gap: 1.1rem; flex-wrap: wrap; }
.studybar__stats b { color: var(--paper); }
.studybar__stats .know b { color: var(--amber); }
.studybar__stats .review b { color: var(--coral); }

/* ----- Flashcard (signal / décryptage) ------------------------------------ */
.stage { display: grid; gap: 1.4rem; justify-items: center; }
.flashcard {
  width: 100%; max-width: 640px; aspect-ratio: 16 / 9; min-height: 260px;
  perspective: 1600px; cursor: pointer;
}
.flashcard__inner {
  position: relative; width: 100%; height: 100%; text-align: left;
  transform-style: preserve-3d; transition: transform 0.5s var(--ease);
}
.flashcard.is-flipped .flashcard__inner { transform: rotateY(180deg); }
.flashcard__face {
  position: absolute; inset: 0; backface-visibility: hidden;
  border-radius: var(--radius-lg); border: 1px solid var(--line-2);
  padding: clamp(1.6rem, 1rem + 3vw, 2.6rem); display: flex; flex-direction: column; gap: 1rem;
  background: var(--surface);
  box-shadow: 0 30px 80px -40px rgba(0,0,0,0.85);
}
.flashcard__face--front { justify-content: space-between; }
.flashcard__face--back { transform: rotateY(180deg); justify-content: space-between; background: var(--surface-2); border-color: color-mix(in srgb, var(--amber) 30%, var(--line-2)); }
.flashcard__tag { font-family: var(--f-mono); font-size: 0.7rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--amber); display: flex; align-items: center; gap: 0.6em; }
.flashcard__face--back .flashcard__tag { color: var(--coral); }
.flashcard__tag::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; box-shadow: 0 0 10px currentColor; }
.flashcard__text { font-family: var(--f-display); font-size: clamp(1.15rem, 1rem + 0.9vw, 1.7rem); line-height: 1.35; color: var(--paper); overflow-y: auto; }
.flashcard__hint { font-family: var(--f-mono); font-size: 0.68rem; color: var(--faint); letter-spacing: 0.04em; }

.stage__nav { display: flex; align-items: center; gap: 1rem; }
.stage__actions { display: flex; gap: 0.8rem; flex-wrap: wrap; justify-content: center; }
.stage__actions .btn { min-width: 150px; justify-content: center; }

/* ----- Écran de fin -------------------------------------------------------- */
.recap { text-align: center; display: grid; gap: 1rem; justify-items: center; padding-block: 1rem; }
.recap__num { font-family: var(--f-display); font-size: var(--step-4); color: var(--amber); }
.recap__row { display: flex; gap: 1.5rem; font-family: var(--f-mono); font-size: 0.85rem; color: var(--muted); }
.recap__row b.know { color: var(--amber); } .recap__row b.review { color: var(--coral); }

/* ----- Boîte de dialogue (native <dialog>) --------------------------------- */
dialog.modal {
  border: 1px solid var(--line-2); border-radius: var(--radius-lg);
  background: var(--ink-2); color: var(--paper);
  padding: 0; width: min(92vw, 560px); max-height: 86vh;
}
dialog.modal::backdrop { background: rgba(6,8,12,0.72); backdrop-filter: blur(2px); }
.modal__head { display: flex; align-items: center; justify-content: space-between; padding: 1.2rem 1.4rem; border-bottom: 1px solid var(--line); }
.modal__head h3 { font-size: var(--step-1); }
.modal__body { padding: 1.4rem; display: grid; gap: 1.1rem; overflow-y: auto; max-height: calc(86vh - 130px); }
.modal__foot { padding: 1rem 1.4rem 1.4rem; display: flex; justify-content: flex-end; gap: 0.7rem; flex-wrap: wrap; }
.modal__close { color: var(--faint); font-size: 1.1rem; }
.modal__close:hover { color: var(--paper); }

.catalog { display: grid; gap: 0.8rem; }
.catalogitem { display: flex; justify-content: space-between; align-items: center; gap: 1rem; border: 1px solid var(--line); border-radius: var(--radius); padding: 0.9rem 1.1rem; }
.catalogitem__t { font-weight: 600; }
.catalogitem__d { color: var(--muted); font-size: var(--step--1); margin-top: 0.2rem; }

.toast {
  position: fixed; left: 50%; top: 5.4rem; transform: translateX(-50%) translateY(-160%);
  background: var(--paper); color: var(--ink); font-family: var(--f-mono); font-size: 0.78rem;
  padding: 0.8em 1.3em; border-radius: var(--radius); z-index: 300; letter-spacing: 0.02em;
  transition: transform 0.35s var(--ease); box-shadow: 0 20px 50px -20px rgba(0,0,0,0.6);
  max-width: min(88vw, 460px); width: max-content; text-align: center;
  word-wrap: break-word; overflow-wrap: break-word; box-sizing: border-box; line-height: 1.5;
}
.toast.is-in { transform: translateX(-50%) translateY(0); }

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

@media (prefers-reduced-motion: reduce) {
  .flashcard__inner { transition: none; }
}