/* =========================================================================
   audio-converter.css — Styles fuer das Telefonanlagen-Audiokonverter-Tool.
   Wird nur auf /audio-konvertieren/ geladen ($page['css'] = 'audio-converter').
   Nutzt die Design-Tokens aus main.css.
   ========================================================================= */

.ac {
  max-width: 900px;
  margin-inline: auto;
}

.ac__panel {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: clamp(1.5rem, 4vw, 3rem);
}

.ac__step-label {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin: 0 0 var(--space-sm);
}
.ac__step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.6rem;
  height: 1.6rem;
  border-radius: var(--radius-pill);
  background: var(--color-primary);
  color: #fff;
  font-size: 0.8125rem;
}
.ac__step + .ac__step { margin-top: var(--space-xl); }

/* === Schritt 1: Dropzone === */
.ac__dropzone {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  text-align: center;
  padding: clamp(1.75rem, 5vw, 3rem);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg-soft);
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition), transform var(--transition);
}
.ac__dropzone:hover,
.ac__dropzone:focus-within {
  border-color: var(--color-primary);
  background: var(--color-bg-tint);
}
.ac__dropzone.is-dragover {
  border-color: var(--color-primary);
  background: var(--color-bg-tint);
  transform: scale(1.01);
}
.ac__dropzone.has-file {
  border-style: solid;
  border-color: var(--color-primary-light);
  background: var(--color-bg-card);
}
.ac__dropzone-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3.5rem;
  height: 3.5rem;
  border-radius: var(--radius-pill);
  background: #fff;
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}
.ac__dropzone-icon svg { width: 28px; height: 28px; }
.ac__dropzone-title {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.0625rem;
  color: var(--color-primary-dark);
}
.ac__dropzone-hint {
  font-size: 0.9375rem;
  color: var(--color-text-subtle);
  margin: 0;
}
.ac__dropzone-browse { color: var(--color-primary); font-weight: 600; text-decoration: underline; }

/* Datei-Input visuell versteckt, aber zugaenglich */
.ac__file-input {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* Ausgewaehlte Datei + Vorschau */
.ac__file-info {
  margin-top: var(--space-md);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  background: var(--color-bg-soft);
  border: 1px solid var(--color-border-soft);
}
.ac__file-head {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}
.ac__file-icon {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem; height: 2.5rem;
  border-radius: var(--radius-md);
  background: var(--color-primary);
  color: #fff;
}
.ac__file-text { min-width: 0; }
.ac__file-name {
  display: block;
  font-weight: 600;
  color: var(--color-primary-dark);
  word-break: break-word;
}
.ac__file-meta { display: block; font-size: 0.875rem; color: var(--color-text-subtle); }
.ac__file-info audio { width: 100%; margin-top: var(--space-2xs); }

/* === Schritt 2: System-Auswahl === */
.ac__systems {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
}
@media (min-width: 640px) {
  .ac__systems { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 860px) {
  .ac__systems { grid-template-columns: repeat(4, 1fr); }
}

.ac__system { position: relative; }
.ac__system input {
  position: absolute;
  opacity: 0;
  width: 1px; height: 1px;
}
.ac__system-card {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  height: 100%;
  padding: var(--space-md);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-card);
  cursor: pointer;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}
.ac__system-card:hover { border-color: var(--color-primary-light); }
.ac__system input:focus-visible + .ac__system-card {
  outline: 3px solid rgba(0, 137, 247, 0.35);
  outline-offset: 2px;
}
.ac__system input:checked + .ac__system-card {
  border-color: var(--color-primary);
  background: var(--color-bg-tint);
  box-shadow: var(--shadow-md);
}
.ac__system-name {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-primary-dark);
  font-size: 1.0625rem;
}
.ac__system-spec {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.4;
}
.ac__system-check {
  position: absolute;
  top: 0.6rem; right: 0.6rem;
  width: 1.35rem; height: 1.35rem;
  border-radius: var(--radius-pill);
  background: var(--color-primary);
  color: #fff;
  display: none;
  align-items: center;
  justify-content: center;
}
.ac__system-check svg { width: 15px; height: 15px; }
.ac__system input:checked + .ac__system-card .ac__system-check { display: inline-flex; }

/* === Schritt 3: Aktion === */
.ac__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}
.ac__actions .button { min-width: 240px; }
.button.is-loading { opacity: 0.75; pointer-events: none; }

.ac__convert-icon { display: inline-flex; }
.button.is-loading .ac__convert-icon { animation: ac-spin 0.9s linear infinite; }
@keyframes ac-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) {
  .button.is-loading .ac__convert-icon { animation: none; }
}

.ac__status {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin: 0;
}
.ac__status::before {
  content: "";
  display: inline-block;
  width: 0.6rem; height: 0.6rem;
  margin-right: 0.5rem;
  border-radius: 50%;
  background: var(--color-primary);
  vertical-align: middle;
  animation: ac-pulse 1.2s ease-in-out infinite;
}
@keyframes ac-pulse { 0%, 100% { opacity: 0.35; } 50% { opacity: 1; } }
@media (prefers-reduced-motion: reduce) {
  .ac__status::before { animation: none; }
}

/* === Fehlermeldung === */
.ac__error {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  margin-top: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  background: rgba(207, 46, 46, 0.08);
  border: 1px solid rgba(207, 46, 46, 0.25);
  color: var(--color-danger);
  font-size: 0.9375rem;
}

/* === Ergebnis === */
.ac__result {
  margin-top: var(--space-lg);
  padding: clamp(1.25rem, 3vw, 2rem);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--color-primary-dark), #001a30);
  color: #fff;
}
.ac__result-head {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.125rem;
  margin-bottom: var(--space-sm);
}
.ac__result-head svg { color: var(--color-primary-light); }
.ac__result audio { width: 100%; margin-bottom: var(--space-md); }
.ac__result-meta {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: var(--space-md);
}
.ac__result-meta strong { color: #fff; }
.ac__result__filename {
  display: inline-block;
  margin-top: 0.35rem;
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 0.8125rem;
  color: var(--color-primary-light);
  word-break: break-all;
}
.ac__result .button--primary {
  background: var(--color-primary);
}
.ac__result .button--primary:hover { background: var(--color-primary-hover); }

/* === Datenschutz-Hinweis === */
.ac__privacy {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  justify-content: center;
  margin-top: var(--space-lg);
  font-size: 0.875rem;
  color: var(--color-text-subtle);
}
.ac__privacy svg { flex: 0 0 auto; color: var(--color-success); }

/* === Format-Tabelle === */
.table-wrap {
  max-width: 900px;
  margin-inline: auto;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-soft);
  box-shadow: var(--shadow-sm);
}
.format-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-bg-card);
  font-size: 0.9375rem;
  min-width: 520px;
}
.format-table th,
.format-table td {
  padding: 0.9rem 1.1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border-soft);
}
.format-table thead th {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #fff;
  background: var(--color-primary-dark);
  white-space: nowrap;
}
.format-table tbody th {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-primary-dark);
}
.format-table tbody tr:last-child th,
.format-table tbody tr:last-child td { border-bottom: none; }
.format-table tbody tr:hover { background: var(--color-bg-soft); }

.format-table__note {
  max-width: 900px;
  margin: var(--space-md) auto 0;
  font-size: 0.875rem;
  color: var(--color-text-subtle);
  text-align: center;
}

/* Fallback ohne JavaScript */
.ac__nojs {
  margin-top: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  background: var(--color-bg-soft);
  border: 1px solid var(--color-border-soft);
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}