/* ============================================================
   SOA Case Converter — v1.0.0
   ============================================================ */
.soa-cconv {
  margin: 40px 0;
  --soa-panel:         rgba(255, 255, 255, 0.88);
  --soa-panel-solid:   rgba(255, 255, 255, 0.96);
  --soa-border:        rgba(31, 43, 54, 0.12);
  --soa-border-strong: rgba(31, 43, 54, 0.22);
  --soa-text:          #21313d;
  --soa-muted:         #677884;
  --soa-accent:        #1d6b72;
  --soa-accent-dark:   #184b56;
  --soa-warm:          #c98d58;
  --soa-warm-light:    rgba(201,141,88,.12);
  --soa-success:       #1f7a60;
  --soa-danger:        #b53f35;
  --soa-shadow:        0 24px 60px rgba(28, 39, 49, 0.12);
  --soa-r-xl:          26px;
  --soa-r-lg:          18px;
  --soa-r-md:          14px;

  /* Couleurs des groupes de boutons */
  --col-case:    #184b56;
  --col-dev:     #2d3e6b;
  --col-clean:   #5a3d1e;
}

/* ── Carte ─────────────────────────────────────────────────── */
.soa-cconv__card {
  position: relative;
  overflow: hidden;
  max-width: 1100px;
  padding: 34px;
  border: 1px solid var(--soa-border);
  border-radius: var(--soa-r-xl);
  background:
    radial-gradient(circle at top right,   rgba(201,141,88,.14),  transparent 26%),
    radial-gradient(circle at bottom left, rgba(29,107,114,.12),  transparent 24%),
    linear-gradient(180deg, #fffdf9 0%, #f8f4ed 100%);
  box-shadow: var(--soa-shadow);
}

.soa-cconv__card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(135deg, rgba(255,255,255,.38), transparent 44%),
    repeating-linear-gradient(135deg,
      rgba(255,255,255,.02) 0, rgba(255,255,255,.02) 6px,
      transparent 6px, transparent 18px);
}

/* ── Hero ──────────────────────────────────────────────────── */
.soa-cconv__hero {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 24px;
  align-items: stretch;
  margin-bottom: 24px;
}

.soa-cconv__hero-copy,
.soa-cconv__stats-panel {
  padding: 26px;
  border: 1px solid rgba(255,255,255,.72);
  border-radius: 22px;
  background: var(--soa-panel);
  backdrop-filter: blur(10px);
}

.soa-cconv__eyebrow {
  margin: 0 0 12px;
  color: var(--soa-accent-dark);
  font-size: .8rem;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.soa-cconv__title {
  margin: 0;
  color: var(--soa-text);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.5rem, 2.5vw, 2.2rem);
  line-height: 1.12;
  font-weight: 700;
}

.soa-cconv__subtitle {
  max-width: 46ch;
  margin: 14px 0 0;
  color: var(--soa-muted);
  font-size: .95rem;
  line-height: 1.75;
}

/* ── Panneau stats ─────────────────────────────────────────── */
.soa-cconv__stats-panel {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  align-content: center;
}

.soa-cconv__stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 14px;
  border: 1px solid var(--soa-border);
  border-radius: var(--soa-r-md);
  background: rgba(255,255,255,.70);
  text-align: center;
  gap: 4px;
}

.soa-cconv__stat-num {
  font-size: 1.9rem;
  font-weight: 900;
  color: var(--soa-accent-dark);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.soa-cconv__stat-lbl {
  color: var(--soa-muted);
  font-size: .76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
}

/* ── Double panneau texte ──────────────────────────────────── */
.soa-cconv__panes {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 14px;
  align-items: stretch;
  margin-bottom: 18px;
}

.soa-cconv__pane {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.soa-cconv__pane-label,
.soa-cconv__pane-label-row {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--soa-muted);
  font-size: .85rem;
  font-weight: 700;
}

.soa-cconv__pane-label-row {
  justify-content: space-between;
}

.soa-cconv__active-op {
  display: inline-flex;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(29,107,114,.10);
  border: 1px solid rgba(29,107,114,.20);
  color: var(--soa-accent-dark);
  font-size: .76rem;
  font-weight: 800;
  min-height: 22px;
  transition: all .2s;
}

.soa-cconv__textarea {
  width: 100%;
  min-height: 200px;
  padding: 16px 18px;
  border: 1px solid var(--soa-border);
  border-radius: 18px;
  background: var(--soa-panel-solid);
  color: var(--soa-text);
  font-size: 1rem;
  line-height: 1.75;
  resize: vertical;
  box-sizing: border-box;
  transition: border-color .18s, box-shadow .18s;
  font-family: inherit;
}

.soa-cconv__textarea--input:focus {
  outline: none;
  border-color: var(--soa-accent);
  box-shadow: 0 0 0 4px rgba(29,107,114,.12);
}

.soa-cconv__textarea--output {
  background: rgba(252,250,246,.94);
  color: var(--soa-text);
  cursor: default;
}

/* Bouton swap central */
.soa-cconv__swap-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  align-self: center;
  border: 1px solid var(--soa-border);
  border-radius: 999px;
  background: var(--soa-panel-solid);
  color: var(--soa-muted);
  cursor: pointer;
  flex-shrink: 0;
  transition: border-color .18s, color .18s, box-shadow .18s, transform .18s;
}

.soa-cconv__swap-btn:hover {
  border-color: var(--soa-accent);
  color: var(--soa-accent);
  box-shadow: 0 4px 14px rgba(29,107,114,.15);
  transform: scale(1.08);
}

/* ── Boutons utilitaires ───────────────────────────────────── */
.soa-cconv__utils {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
}

.soa-cconv__util-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 0;
  border-radius: 999px;
  padding: 11px 20px;
  cursor: pointer;
  font-size: .9rem;
  font-weight: 800;
  transition: transform .16s, box-shadow .16s;
}

.soa-cconv__util-btn--copy {
  background: linear-gradient(135deg, var(--soa-accent-dark) 0%, var(--soa-accent) 100%);
  color: #fff;
  box-shadow: 0 8px 20px rgba(29,107,114,.22);
}

.soa-cconv__util-btn--use {
  background: linear-gradient(135deg, #233846 0%, #335466 100%);
  color: #fff;
}

.soa-cconv__util-btn--clear {
  background: linear-gradient(180deg, #fffaf3 0%, #f6ede0 100%);
  color: var(--soa-text);
  border: 1px solid rgba(201,141,88,.26);
}

.soa-cconv__util-btn:hover  { transform: translateY(-2px); box-shadow: 0 12px 24px rgba(24,75,86,.18); }
.soa-cconv__util-btn:active { transform: translateY(0); }

/* ── Groupes de transformations ────────────────────────────── */
.soa-cconv__group {
  position: relative;
  z-index: 1;
  margin-bottom: 18px;
  padding: 20px 22px;
  border: 1px solid var(--soa-border);
  border-radius: var(--soa-r-lg);
  background: rgba(255,255,255,.72);
}

.soa-cconv__group:last-of-type { margin-bottom: 0; }

.soa-cconv__group-label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  color: var(--soa-muted);
  font-size: .8rem;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.soa-cconv__ops {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

/* ── Boutons d'opération ───────────────────────────────────── */
.soa-cconv__op {
  border: 1.5px solid transparent;
  border-radius: 999px;
  padding: 9px 18px;
  cursor: pointer;
  font-size: .88rem;
  font-weight: 800;
  letter-spacing: .01em;
  transition: background .16s, border-color .16s, color .16s, transform .14s, box-shadow .14s;
}

/* Casse */
.soa-cconv__op--upper,
.soa-cconv__op--lower,
.soa-cconv__op--title,
.soa-cconv__op--sentence,
.soa-cconv__op--alt,
.soa-cconv__op--inverse {
  background: rgba(24,75,86,.07);
  border-color: rgba(24,75,86,.15);
  color: var(--col-case);
}

.soa-cconv__op--upper:hover,
.soa-cconv__op--lower:hover,
.soa-cconv__op--title:hover,
.soa-cconv__op--sentence:hover,
.soa-cconv__op--alt:hover,
.soa-cconv__op--inverse:hover {
  background: rgba(24,75,86,.14);
  border-color: rgba(24,75,86,.30);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(24,75,86,.12);
}

/* Développeur */
.soa-cconv__op--dev {
  background: rgba(45,62,107,.07);
  border-color: rgba(45,62,107,.15);
  color: var(--col-dev);
  font-family: Consolas, Monaco, "Courier New", monospace;
  font-size: .84rem;
}

.soa-cconv__op--dev:hover {
  background: rgba(45,62,107,.14);
  border-color: rgba(45,62,107,.30);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(45,62,107,.12);
}

/* Nettoyage */
.soa-cconv__op--clean {
  background: rgba(201,141,88,.10);
  border-color: rgba(201,141,88,.25);
  color: var(--col-clean);
}

.soa-cconv__op--clean:hover {
  background: rgba(201,141,88,.18);
  border-color: rgba(201,141,88,.40);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(201,141,88,.14);
}

/* État actif (dernière transformation appliquée) */
.soa-cconv__op--active {
  transform: translateY(-1px) !important;
}

.soa-cconv__op--upper.soa-cconv__op--active,
.soa-cconv__op--lower.soa-cconv__op--active,
.soa-cconv__op--title.soa-cconv__op--active,
.soa-cconv__op--sentence.soa-cconv__op--active,
.soa-cconv__op--alt.soa-cconv__op--active,
.soa-cconv__op--inverse.soa-cconv__op--active {
  background: var(--col-case);
  border-color: var(--col-case);
  color: #fff;
  box-shadow: 0 6px 16px rgba(24,75,86,.25);
}

.soa-cconv__op--dev.soa-cconv__op--active {
  background: var(--col-dev);
  border-color: var(--col-dev);
  color: #fff;
  box-shadow: 0 6px 16px rgba(45,62,107,.25);
}

.soa-cconv__op--clean.soa-cconv__op--active {
  background: var(--col-clean);
  border-color: var(--col-clean);
  color: #fff;
  box-shadow: 0 6px 16px rgba(90,61,30,.22);
}

/* ── Message ───────────────────────────────────────────────── */
.soa-cconv__message {
  position: relative;
  z-index: 1;
  min-height: 1.4em;
  margin: 16px 0 0;
  color: var(--soa-success);
  font-weight: 700;
  font-size: .92rem;
}

.soa-cconv__message--error { color: var(--soa-danger); }

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 900px) {
  .soa-cconv__hero  { grid-template-columns: 1fr; }
  .soa-cconv__stats-panel { grid-template-columns: repeat(4, 1fr); }
  .soa-cconv__panes { grid-template-columns: 1fr; grid-template-rows: auto auto auto; }
  .soa-cconv__swap-btn { width: 100%; height: 38px; border-radius: var(--soa-r-md); }
  .soa-cconv__swap-btn svg { transform: rotate(90deg); }
}

@media (max-width: 640px) {
  .soa-cconv__card           { padding: 20px; border-radius: 22px; }
  .soa-cconv__hero-copy,
  .soa-cconv__group          { padding: 16px; }
  .soa-cconv__stats-panel    { grid-template-columns: repeat(2, 1fr); padding: 16px; }
  .soa-cconv__op             { padding: 8px 14px; font-size: .83rem; }
}