:root {
  --bg: #0d1b2a;
  --panel: #1b2a3a;
  --accent: #f4a261;
  --primary: #2a9d8f;
  --text: #e6edf3;
  --muted: #9aa8b6;
  --danger: #e76f51;
  --good: #43aa8b;
  --radius: 14px;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-tap-highlight-color: transparent;
}

body {
  display: flex;
  flex-direction: column;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}

header {
  padding: 22px 20px 12px;
  text-align: center;
  position: relative;
}

header h1 { margin: 0; font-size: 1.7rem; letter-spacing: -0.01em; }
header .tagline { margin: 4px 0 0; color: var(--muted); font-size: 0.95rem; }

button.install {
  position: absolute;
  right: 16px;
  top: 22px;
  background: var(--accent);
  color: #21130d;
  border: 0;
  border-radius: 999px;
  padding: 8px 14px;
  font-weight: 600;
  cursor: pointer;
}

main { flex: 1; padding: 12px 16px; max-width: 720px; width: 100%; margin: 0 auto; }

.tabs {
  display: flex;
  gap: 6px;
  background: var(--panel);
  padding: 4px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.tab {
  flex: 1;
  background: transparent;
  color: var(--muted);
  border: 0;
  padding: 10px 12px;
  border-radius: 999px;
  font-size: 0.95rem;
  cursor: pointer;
  font-weight: 600;
}
.tab.active { background: var(--primary); color: white; }

.panel { display: none; }
.panel.active { display: block; }

.dropzone {
  display: block;
  min-height: 160px;
  border: 2px dashed #3b4d63;
  border-radius: var(--radius);
  padding: 18px;
  text-align: center;
  cursor: pointer;
  background: rgba(255,255,255,0.02);
  transition: border-color 120ms ease, background 120ms ease;
}
.dropzone.drag { border-color: var(--accent); background: rgba(244,162,97,0.08); }
.dropzone .hint { color: var(--muted); font-size: 0.95rem; }
.dropzone .filename { display: block; margin-top: 8px; font-weight: 600; word-break: break-all; }

.filelist {
  list-style: none;
  padding: 0;
  margin: 12px 0 0;
  text-align: left;
  max-height: 220px;
  overflow: auto;
}
.filelist li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  padding: 6px 8px;
  border-radius: 8px;
  font-size: 0.9rem;
}
.filelist li:nth-child(odd) { background: rgba(255,255,255,0.03); }
.filelist a { color: var(--accent); text-decoration: none; }
.filelist a:hover { text-decoration: underline; }

.row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 14px 0;
}
.row span { color: var(--muted); min-width: 110px; }
.row input[type="text"] {
  flex: 1;
  background: var(--panel);
  color: var(--text);
  border: 1px solid #2c3e54;
  border-radius: 10px;
  padding: 10px 12px;
  font: inherit;
}

button.primary {
  width: 100%;
  background: var(--primary);
  color: white;
  border: 0;
  padding: 14px;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  margin-top: 8px;
}
button.primary:disabled { background: #345b62; cursor: not-allowed; }

.note { color: var(--muted); font-size: 0.9rem; }

.log {
  background: var(--panel);
  border-radius: 10px;
  padding: 10px;
  max-height: 220px;
  overflow: auto;
  font-size: 0.85rem;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--text);
}

footer {
  position: sticky;
  bottom: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px calc(10px + env(safe-area-inset-bottom));
  background: var(--bg);
  border-top: 1px solid #1f2d3e;
}
progress {
  flex: 1;
  appearance: none;
  height: 8px;
  border: 0;
  border-radius: 4px;
  overflow: hidden;
  background: var(--panel);
}
progress::-webkit-progress-bar { background: var(--panel); }
progress::-webkit-progress-value { background: var(--primary); }
progress::-moz-progress-bar { background: var(--primary); }
#status { color: var(--muted); font-size: 0.85rem; }