* { box-sizing: border-box; }

:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --border: #e3e6ea;
  --text: #1f2328;
  --muted: #6b7280;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --danger: #dc2626;
  --ok: #16a34a;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

header {
  padding: 24px 20px 8px;
  max-width: 720px;
  margin: 0 auto;
}
header h1 { margin: 0; font-size: 22px; }

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 16px 20px 60px;
  display: grid;
  gap: 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

.card h2 {
  margin: 0 0 14px;
  font-size: 16px;
  font-weight: 600;
}

.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}
.row h2 { margin: 0; }

/* Drop zone */
.drop {
  border: 2px dashed var(--border);
  border-radius: 10px;
  padding: 32px 16px;
  text-align: center;
  color: var(--muted);
  transition: border-color .15s, background .15s;
  cursor: pointer;
}
.drop.dragover {
  border-color: var(--accent);
  background: #eff6ff;
  color: var(--accent);
}
.drop p { margin: 4px 0; }
.hint { font-size: 12px; }

.link {
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  font: inherit;
  padding: 0;
  text-decoration: underline;
}

/* Progress */
.progress {
  height: 6px;
  background: #eef0f3;
  border-radius: 4px;
  overflow: hidden;
  margin-top: 14px;
}
.progress-bar {
  height: 100%;
  width: 0;
  background: var(--accent);
  transition: width .15s;
}

/* Result */
.result {
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: 8px;
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  font-size: 14px;
}
.result.error {
  background: #fef2f2;
  border-color: #fecaca;
  color: var(--danger);
}
.result .link-row {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}
.result input {
  flex: 1;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font: inherit;
  font-size: 13px;
  background: #fff;
}

/* Files list */
.files { display: grid; gap: 8px; }

.file-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
}
.file-icon {
  width: 36px; height: 36px;
  display: grid; place-items: center;
  background: #eff6ff;
  color: var(--accent);
  border-radius: 8px;
  font-size: 18px;
  flex: 0 0 auto;
}
.file-info { flex: 1; min-width: 0; }
.file-name {
  font-weight: 500;
  font-size: 14px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.file-meta {
  font-size: 12px;
  color: var(--muted);
  margin-top: 2px;
}
.file-actions {
  display: flex;
  gap: 6px;
  flex: 0 0 auto;
}

/* Buttons */
button.btn {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 8px 12px;
  border-radius: 6px;
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}
button.btn:hover { background: var(--accent-hover); }

button.btn-ghost {
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 12px;
  border-radius: 6px;
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}
button.btn-ghost:hover { background: #f3f4f6; }

button.btn-danger {
  background: none;
  border: 1px solid var(--border);
  color: var(--danger);
  padding: 6px 10px;
  border-radius: 6px;
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}
button.btn-danger:hover { background: #fef2f2; border-color: #fecaca; }

.empty {
  color: var(--muted);
  text-align: center;
  padding: 20px 0;
  margin: 0;
  font-size: 14px;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: #1f2328;
  color: #fff;
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 13px;
  box-shadow: 0 6px 20px rgba(0,0,0,.15);
  z-index: 100;
}

.hidden { display: none !important; }