/* ============================================================
   FileForge – styles.css
   ============================================================ */

/* ---------- Gemeinsame Design-Tokens (Webtools-Basis) ---------- */
:root {
  --ink-950: #0a0b0d;
  --ink-900: #101217;
  --ink-850: #15181f;
  --ink-800: #1b1f28;
  --ink-700: #262b36;
  --ink-600: #363c4a;
  --ink-400: #6b7484;
  --ink-300: #98a1b0;
  --ink-200: #c3cad5;
  --ink-50:  #eef1f6;

  --brand:      #6ea8fe;
  --brand-soft: rgba(110, 168, 254, 0.14);

  /* Zustandsfarben — nur für Status, nie als Dekoration. */
  --ok:     #6ecf8e;
  --danger: #f87171;
  --warn:   #d9a95c;

  --radius-sm: 6px;
  --radius:    8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 16px;

  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  --shadow-pop: 0 12px 40px -12px rgba(0, 0, 0, 0.8);
  --transition: 0.15s ease;

  /* Aliase für die Inline-Styles im Renderer. */
  --bg-base:        var(--ink-950);
  --bg-surface:     var(--ink-900);
  --bg-elevated:    var(--ink-850);
  --bg-card:        var(--ink-900);
  --border:         var(--ink-700);
  --text-primary:   var(--ink-50);
  --text-secondary: var(--ink-300);
  --text-muted:     var(--ink-400);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { color-scheme: dark; }

body {
  font-family: var(--font-sans);
  background: var(--ink-950);
  color: var(--ink-50);
  min-height: 100vh;
  line-height: 1.55;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

*:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
  border-radius: 4px;
}

::selection { background: rgba(110, 168, 254, 0.28); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--ink-700); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--ink-600); }

/* ---------- Utility ---------- */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}
.hidden { display: none !important; }

/* ============================================================
   HEADER
   ============================================================ */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--ink-950);
  border-bottom: 1px solid var(--ink-700);
}
.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  gap: 24px;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  flex-shrink: 0;
}
.logo-text {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink-50);
  letter-spacing: -0.01em;
}
.logo-accent { color: var(--ink-400); }

/* Nav */
.header-nav {
  display: flex;
  gap: 3px;
  flex: 1;
  flex-wrap: wrap;
}
.nav-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: transparent;
  color: var(--ink-400);
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color var(--transition), color var(--transition);
  white-space: nowrap;
}
.nav-btn:hover {
  color: var(--ink-50);
  background: var(--ink-800);
}
.nav-btn.active {
  color: var(--ink-50);
  background: var(--ink-700);
}

/* Badge */
.header-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--ink-400);
  flex-shrink: 0;
  white-space: nowrap;
}
.badge-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--ink-600);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  padding: 56px 0 48px;
}

.hero-title {
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 10px;
}
@media (min-width: 640px) {
  .hero-title { font-size: 2rem; }
}
.hero-subtitle {
  font-size: 0.9375rem;
  color: var(--ink-300);
  margin-bottom: 28px;
  max-width: 620px;
}

/* ---------- Drop Zone ---------- */
.dropzone {
  position: relative;
  border: 1px dashed var(--ink-600);
  border-radius: var(--radius-lg);
  min-height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  background: rgba(16, 18, 23, 0.6);
  transition: border-color var(--transition), background-color var(--transition);
  overflow: hidden;
}
.dropzone:hover,
.dropzone.drag-over {
  border-color: var(--brand);
  background: var(--ink-900);
}

.dropzone-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 32px;
  text-align: center;
}
.dropzone-icon {
  margin-bottom: 10px;
  color: var(--ink-400);
  display: flex;
}
.dropzone-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink-50);
}
.dropzone-sub {
  font-size: 0.875rem;
  color: var(--ink-400);
}
.dropzone-formats {
  margin-top: 12px;
  font-size: 0.75rem;
  color: var(--ink-400);
  font-family: var(--font-mono);
}
.file-input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
}

/* ============================================================
   CONVERTER SECTION
   ============================================================ */
.converter-section { padding: 24px 0 56px; }

/* File Info Bar */
.file-info-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: rgba(16, 18, 23, 0.6);
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  margin-bottom: 20px;
}
.file-info-left {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}
.file-icon-wrapper {
  width: 34px; height: 34px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.02em;
  color: var(--ink-300);
  background: var(--ink-800);
  border-radius: var(--radius-sm);
  border: 1px solid var(--ink-700);
  flex-shrink: 0;
  text-transform: uppercase;
}
.file-meta { display: flex; flex-direction: column; gap: 1px; min-width: 0; }
.file-name {
  font-weight: 500;
  font-size: 0.875rem;
  color: var(--ink-50);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.file-size {
  font-size: 0.75rem;
  color: var(--ink-400);
  font-family: var(--font-mono);
}

/* Conversion Grid */
.conversion-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}

.conversion-card {
  background: rgba(16, 18, 23, 0.6);
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-lg);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color var(--transition), background-color var(--transition);
}
.conversion-card:hover {
  border-color: var(--ink-600);
  background: var(--ink-850);
}

.conversion-card .card-label {
  font-size: 0.7rem;
  color: var(--ink-400);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 500;
}
.conversion-card .card-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--ink-50);
}
.conversion-card .card-subtitle {
  font-size: 0.8125rem;
  color: var(--ink-400);
  line-height: 1.5;
}
.conversion-card .card-badge {
  font-size: 0.7rem;
  color: var(--ink-400);
  width: fit-content;
}

/* Convert button inside card */
.card-convert-btn {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 100%;
  margin-top: auto;
  padding: 8px 14px;
  background: transparent;
  border: 1px solid var(--ink-700);
  border-radius: var(--radius);
  color: var(--ink-200);
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color var(--transition), border-color var(--transition), color var(--transition);
}
.card-convert-btn:hover {
  background: var(--ink-800);
  border-color: var(--ink-600);
  color: var(--ink-50);
}

/* Extra options panel (quality, etc.) */
.options-panel {
  background: var(--ink-900);
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 16px;
}
.options-panel h4 {
  font-size: 0.7rem;
  font-weight: 500;
  margin-bottom: 12px;
  color: var(--ink-400);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.option-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}
.option-row label {
  font-size: 0.8125rem;
  color: var(--ink-400);
  min-width: 90px;
}
.option-row input[type="range"] {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  background: var(--ink-700);
  border-radius: 999px;
  outline: none;
  cursor: pointer;
}
.option-row input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--brand);
  cursor: pointer;
}
.option-row input[type="range"]::-moz-range-thumb {
  width: 14px; height: 14px;
  border: none;
  border-radius: 50%;
  background: var(--brand);
  cursor: pointer;
}
.option-value {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--ink-200);
  min-width: 36px;
  text-align: right;
}

/* ============================================================
   FEATURE CARDS
   ============================================================ */
.features-section { padding: 32px 0 72px; }
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
}
.feature-card {
  background: rgba(16, 18, 23, 0.6);
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-lg);
  padding: 18px;
  transition: border-color var(--transition), background-color var(--transition);
}
.feature-card:hover {
  border-color: var(--ink-600);
  background: var(--ink-850);
}
.feature-card h3 {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--ink-50);
}
.feature-card p {
  font-size: 0.8125rem;
  color: var(--ink-400);
  margin-bottom: 14px;
}
.feature-tags { display: flex; flex-wrap: wrap; gap: 5px; }
.tag {
  font-size: 0.7rem;
  font-family: var(--font-mono);
  padding: 2px 7px;
  border-radius: var(--radius-sm);
  background: var(--ink-800);
  border: 1px solid var(--ink-700);
  color: var(--ink-300);
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background-color var(--transition), border-color var(--transition), color var(--transition);
  text-decoration: none;
}
.btn-primary {
  background: var(--brand);
  color: var(--ink-950);
  font-weight: 600;
}
.btn-primary:hover { filter: brightness(1.1); }

.btn-ghost {
  background: transparent;
  border: 1px solid var(--ink-700);
  color: var(--ink-300);
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  border-radius: var(--radius);
  transition: background-color var(--transition), color var(--transition);
  flex-shrink: 0;
}
.btn-ghost:hover {
  background: var(--ink-800);
  color: var(--ink-50);
}

/* Download ist die Zielaktion nach der Konvertierung. */
.btn-download {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--brand);
  border: 1px solid transparent;
  border-radius: var(--radius);
  color: var(--ink-950);
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: filter var(--transition);
}
.btn-download:hover { filter: brightness(1.1); }

/* ============================================================
   TOAST
   ============================================================ */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border-radius: var(--radius);
  font-size: 0.8125rem;
  min-width: 240px;
  max-width: 380px;
  box-shadow: var(--shadow-pop);
  animation: slide-in 0.2s ease;
  background: var(--ink-900);
  border: 1px solid var(--ink-700);
  color: var(--ink-200);
}
/* Nur ein farbiger Rand markiert den Ausgang — der Text bleibt lesbar. */
.toast-success { border-left: 2px solid var(--ok); }
.toast-error   { border-left: 2px solid var(--danger); }
.toast-info    { border-left: 2px solid var(--brand); }

@keyframes slide-in {
  from { transform: translateY(12px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}
@keyframes fade-out {
  from { transform: translateY(0);    opacity: 1; }
  to   { transform: translateY(12px); opacity: 0; }
}
.toast.removing { animation: fade-out 0.2s forwards; }

/* ============================================================
   PROGRESS OVERLAY
   ============================================================ */
.progress-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 11, 13, 0.75);
  z-index: 9000;
  display: flex;
  align-items: center;
  justify-content: center;
}
.progress-card {
  background: var(--ink-900);
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-lg);
  padding: 32px 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  box-shadow: var(--shadow-pop);
}
.progress-spinner {
  width: 28px; height: 28px;
  border: 2px solid var(--ink-700);
  border-top-color: var(--brand);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.progress-text {
  font-size: 0.875rem;
  color: var(--ink-300);
}

/* ============================================================
   RESULT AREA
   ============================================================ */
.result-area {
  background: var(--ink-900);
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-top: 16px;
}
.result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}
.result-header h4 {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--ink-400);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.result-preview-img {
  max-width: 100%;
  max-height: 300px;
  border-radius: var(--radius);
  border: 1px solid var(--ink-700);
  object-fit: contain;
  display: block;
  margin: 0 auto;
}
.result-preview-code {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-300);
  background: var(--ink-950);
  border-radius: var(--radius);
  padding: 12px;
  overflow: auto;
  max-height: 280px;
  white-space: pre-wrap;
  word-break: break-all;
  border: 1px solid var(--ink-700);
}
.result-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  flex-wrap: wrap;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  .header-inner { flex-wrap: wrap; height: auto; padding: 12px 16px; gap: 10px; }
  .header-nav { order: 3; width: 100%; overflow-x: auto; padding-bottom: 4px; }
  .header-badge { display: none; }
  .hero { padding: 40px 0 32px; }
  .features-grid { grid-template-columns: 1fr 1fr; }
  .conversion-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .features-grid { grid-template-columns: 1fr; }
  .conversion-grid { grid-template-columns: 1fr; }
  .file-info-bar { flex-direction: column; align-items: flex-start; }
}