:root {
  --bg-1: #f8f3e6;
  --bg-2: #e7efe9;
  --ink: #1f2933;
  --ink-muted: #4a5a68;
  --brand: #0f4c5c;
  --brand-2: #6b9a8f;
  --surface: rgba(255, 255, 255, 0.78);
  --border: rgba(15, 76, 92, 0.18);
  --danger: #9f2d2d;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Space Grotesk", "Avenir Next", "Segoe UI", sans-serif;
  color: var(--ink);
  min-height: 100vh;
  background:
    radial-gradient(circle at 14% 10%, rgba(15, 76, 92, 0.18), transparent 30%),
    radial-gradient(
      circle at 88% 20%,
      rgba(107, 154, 143, 0.22),
      transparent 35%
    ),
    linear-gradient(155deg, var(--bg-1), var(--bg-2));
}

.app-shell {
  max-width: 920px;
  margin: 0 auto;
  padding: 2rem 1rem 2.5rem;
  display: grid;
  gap: 1.2rem;
}

body.android-app .app-shell {
  padding-top: calc(2rem + env(safe-area-inset-top) + 0.75rem);
}

body.android-app footer {
  padding-bottom: calc(2rem + env(safe-area-inset-bottom) + 0.75rem);
}

body.android-app .non-android-only {
  display: none;
}

.hero {
  background: linear-gradient(
    120deg,
    rgba(15, 76, 92, 0.9),
    rgba(107, 154, 143, 0.86)
  );
  color: #f7fbfc;
  border-radius: 20px;
  padding: 1.4rem;
  box-shadow: 0 12px 28px rgba(23, 37, 44, 0.2);
  animation: hero-in 500ms ease-out;
}

.eyebrow {
  margin: 0;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.75rem;
  opacity: 0.9;
}

.hero h1 {
  margin: 0.35rem 0 0;
  font-size: clamp(1.4rem, 4.5vw, 2.3rem);
}

.hero p {
  margin: 0.45rem 0 0;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 1rem;
  backdrop-filter: blur(5px);
}

.dropzone {
  display: block;
  border: 2px dashed rgba(15, 76, 92, 0.35);
  border-radius: 14px;
  padding: 1.1rem;
  text-align: center;
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background-color 160ms ease;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.58);
}

.dropzone.dragover {
  transform: translateY(-1px);
  border-color: var(--brand);
  background: rgba(15, 76, 92, 0.06);
}

.drop-title {
  display: block;
  font-weight: 700;
}

.drop-subtitle {
  display: block;
  color: var(--ink-muted);
  margin-top: 0.2rem;
}

input[type="file"] {
  display: none;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 0.8rem;
}

button {
  border: 0;
  border-radius: 11px;
  background: var(--brand);
  color: #f3f8f9;
  padding: 0.6rem 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: filter 120ms ease;
}

button:hover:not(:disabled) {
  filter: brightness(1.05);
}

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.status {
  margin: 0.7rem 0 0;
  color: var(--ink-muted);
}

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

.prefs-panel h2,
.results-panel h2 {
  margin-top: 0;
}

.prefs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 0.55rem 0.9rem;
}

.pref-item {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  line-height: 1.3;
}

.pref-item input[type="checkbox"] {
  margin-top: 0.15rem;
}

.results {
  list-style: none;
  padding: 0;
  margin: 0.8rem 0 0;
  display: grid;
  gap: 0.5rem;
}

.result-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.6rem;
  border: 1px solid rgba(15, 76, 92, 0.16);
  border-radius: 12px;
  padding: 0.65rem;
  background: rgba(255, 255, 255, 0.78);
  animation: row-in 260ms ease-out;
}

.result-meta {
  overflow-wrap: anywhere;
}

.result-meta strong {
  display: block;
}

.result-meta small {
  color: var(--ink-muted);
}

.download-link {
  text-decoration: none;
  background: #1d6f58;
  color: #f6fbf8;
  border-radius: 9px;
  padding: 0.45rem 0.62rem;
  white-space: nowrap;
}

.result-actions {
  display: flex;
  gap: 0.4rem;
}

.open-btn {
  background: #0f4c5c;
  color: #f6fbf8;
  border-radius: 9px;
  padding: 0.45rem 0.62rem;
  white-space: nowrap;
}

@keyframes hero-in {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes row-in {
  from {
    opacity: 0;
    transform: translateY(2px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 640px) {
  .app-shell {
    padding: 1rem 0.75rem 1.3rem;
  }

  .prefs-grid {
    grid-template-columns: 1fr;
  }

  .result-item {
    flex-direction: column;
    align-items: stretch;
  }

  .download-link {
    text-align: center;
  }

  .result-actions {
    width: 100%;
  }

  .result-actions .download-link,
  .result-actions .open-btn {
    flex: 1;
    text-align: center;
  }
}