:root {
  --brand: #ff6a3d;
  --text: #0f1720;
  --muted: #6b7280;
  --bg: #f7f8fa;
  --card: #ffffff;
  --ring: rgba(15,23,32,0.08);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, sans-serif;
  color: var(--text);
  background: var(--bg);
}

header {
  position: sticky;
  top: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: var(--card);
  box-shadow: 0 1px 2px var(--ring);
  z-index: 50;
}

header .brand {
  font-weight: 700;
  color: var(--brand);
  text-decoration: none;
  font-size: 1.5625rem;
}

header .brand img {
  width: 50px;
  height: 50px;
}

nav a {
  margin-left: 1.5rem;
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
}

.hero {
  text-align: center;
  padding: 4rem 1rem;
}
.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}
.hero p {
  max-width: 720px;
  margin: 0 auto;
  color: var(--muted);
  line-height: 1.5;
}

.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: 0 2px 4px var(--ring);
  padding: 2rem;
  max-width: 900px;
  margin: 0 auto;
}

.tabs {
  display: flex;
  background: var(--bg);
  border-radius: var(--radius);
  padding: 0.25rem;
}
.tabs button {
  flex: 1;
  padding: 0.75rem 1rem;
  border: none;
  background: none;
  cursor: pointer;
  font-weight: 500;
  border-radius: var(--radius);
}
.tabs button:focus {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}
.tabs button.active {
  background: var(--brand);
  color: #fff;
  font-weight: 600;
}

.section {
  margin-top: 1.5rem;
}
.pills {
  display: flex;
  gap: 0.5rem;
}
.pills button {
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--ring);
  background: none;
  cursor: pointer;
  font-size: 0.875rem;
}
.pills button.active {
  background: var(--brand);
  color: #fff;
  border-color: var(--brand);
  font-weight: 600;
}

.drop-zone {
  border: 2px dashed var(--ring);
  padding: 2rem;
  text-align: center;
  border-radius: var(--radius);
  margin-top: 1rem;
  color: var(--muted);
}
.drop-zone.focus {
  border-color: var(--brand);
}
.drop-zone button {
  margin-top: 0.5rem;
  padding: 0.5rem 1rem;
  border: none;
  border-radius: var(--radius);
  background: var(--brand);
  color: #fff;
  cursor: pointer;
}
.drop-zone input {
  display: none;
}

.select {
  margin-top: 0.5rem;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--ring);
  border-radius: var(--radius);
  background: var(--card);
}

.select:focus {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

.file-list {
  margin-top: 1.5rem;
}
.file-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--ring);
  flex-wrap: wrap;
}
.file-row img {
  width: 48px;
  height: 48px;
  object-fit: cover;
  border-radius: var(--radius);
}
.file-row .name {
  flex: 1 1 150px;
  overflow-wrap: anywhere;
}
.file-row input[type="range"] {
  width: 120px;
}
.file-row .resize {
  display: flex;
  gap: 0.25rem;
}
.file-row .resize input {
  width: 70px;
  padding: 0.25rem;
  border: 1px solid var(--ring);
  border-radius: 6px;
}
.file-row .progress {
  flex: 1;
  height: 8px;
  background: var(--bg);
  border-radius: 4px;
  overflow: hidden;
}
.file-row .progress span {
  display: block;
  height: 100%;
  background: var(--brand);
  width: 0;
}
.file-row .size {
  width: 80px;
  text-align: right;
  font-size: 0.875rem;
  color: var(--muted);
}
.file-row .target-format {
  width: 60px;
  text-align: center;
  font-size: 0.875rem;
  color: var(--muted);
}
.file-row button {
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  border: none;
  background: var(--brand);
  color: #fff;
  cursor: pointer;
}
.file-row button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.download-all {
  margin-top: 1rem;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: var(--radius);
  background: var(--brand);
  color: #fff;
  cursor: pointer;
  display: none;
}

.note {
  display: block;
  margin-top: 0.25rem;
  color: var(--muted);
  font-size: 0.8125rem;
}

.coming-soon {
  margin-top: 0.5rem;
  padding: 0.5rem;
  background: var(--bg);
  border: 1px solid var(--ring);
  border-radius: var(--radius);
  text-align: center;
  color: var(--muted);
}

.banner {
  margin-top: 1rem;
  padding: 0.75rem;
  background: var(--bg);
  border-radius: var(--radius);
  text-align: center;
  color: var(--muted);
}

.toast {
  position: fixed;
  bottom: 1rem;
  right: 1rem;
  background: var(--card);
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  box-shadow: 0 2px 4px var(--ring);
}

footer {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--muted);
}
footer a {
  margin: 0 0.5rem;
  color: var(--muted);
  text-decoration: none;
}

.tools-directory {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--ring);
  text-align: left;
}
.tools-directory h2 {
  margin: 0 0 1rem;
  color: var(--brand);
}
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
}
.tools-grid details {
  border: 0;
  padding: 0;
}
.tools-grid summary {
  cursor: pointer;
  list-style: none;
}
.tools-grid summary::-webkit-details-marker {
  display: none;
}
.tools-grid summary h3 {
  margin: 0;
  font-size: 1rem;
  color: var(--brand);
}
.tools-grid ul {
  list-style: none;
  padding: 0;
  margin: 0.5rem 0 0;
}
.tools-grid li {
  margin-bottom: 0.25rem;
}
.tools-grid a:hover,
.tools-grid a:focus {
  color: var(--brand);
}
@media (max-width: 600px) {
  .tools-grid {
    grid-template-columns: 1fr;
  }
  .tools-grid details {
    border-bottom: 1px solid var(--ring);
    padding-bottom: 0.5rem;
    margin-bottom: 0.5rem;
  }
}

@media (max-width: 600px) {
  header {
    padding: 1rem;
    flex-direction: column;
    align-items: flex-start;
  }
  nav {
    margin-top: 0.5rem;
  }
  .file-row {
    flex-direction: column;
    align-items: flex-start;
  }
  .file-row .size {
    text-align: left;
  }
  .tabs {
    flex-direction: column;
  }
}