:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --ink: #17202a;
  --muted: #5b6b7a;
  --accent: #0b6bcb;
  --accent-dark: #095aa8;
  --border: #dde3e8;
  --warn-bg: #fff4d6;
  --warn-border: #e3c878;
  --good: #137547;
  --radius: 14px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
}

.wrap { max-width: 920px; margin: 0 auto; padding: 0 20px; }

.site-header {
  background: var(--ink);
  color: #fff;
  padding: 22px 0;
}
.header-inner { display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px 18px; }
.brand { font-size: 1.7rem; font-weight: 800; letter-spacing: -0.02em; }
.brand span { color: #6cb2f0; }
.tagline { margin: 0; color: #c9d6e2; font-size: 1rem; }

.hero { padding: 34px 0 6px; }
.hero h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 10px; letter-spacing: -0.02em; }
.hero p { color: var(--muted); font-size: 1.08rem; margin: 0; max-width: 640px; }

.warning {
  background: var(--warn-bg);
  border: 1px solid var(--warn-border);
  border-radius: var(--radius);
  padding: 14px 18px;
  margin-top: 22px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin: 22px 0;
  box-shadow: 0 1px 3px rgba(23, 32, 42, 0.05);
}
.card h2 { margin: 0 0 8px; font-size: 1.3rem; }
.tool-desc { color: var(--muted); margin: 0 0 16px; }
.hint { color: var(--muted); font-size: 0.88rem; margin: 10px 0 0; }
.status { color: var(--muted); font-size: 0.92rem; }

.dropzone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 26px 16px;
  text-align: center;
  color: var(--muted);
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.dropzone:hover, .dropzone:focus-visible { border-color: var(--accent); outline: none; }
.dropzone.dragging { border-color: var(--accent); background: #eef5fd; }
.dropzone p { margin: 0; font-size: 1rem; }

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: end;
  margin-top: 18px;
}
.controls label { display: flex; flex-direction: column; gap: 6px; font-size: 0.92rem; font-weight: 600; flex: 1 1 160px; }
.controls select, .controls input[type="number"] {
  padding: 9px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
  background: #fff;
  color: var(--ink);
}
.controls input[type="range"] { width: 100%; }

.btn {
  background: var(--accent);
  color: #fff;
  border: 0;
  border-radius: 9px;
  padding: 11px 20px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
}
.btn:hover:not(:disabled) { background: var(--accent-dark); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }

.actions { display: flex; align-items: center; gap: 14px; margin-top: 16px; flex-wrap: wrap; }

.file-list { list-style: none; margin: 16px 0 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.file-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  flex-wrap: wrap;
}
.file-list img.thumb { width: 52px; height: 52px; object-fit: cover; border-radius: 6px; flex: none; }
.file-info { flex: 1 1 200px; min-width: 0; }
.file-name { font-weight: 600; word-break: break-all; }
.file-size { color: var(--muted); font-size: 0.9rem; }
.file-size .saved { color: var(--good); font-weight: 700; }
.file-size .grew { color: #a33; font-weight: 700; }

.mini-btn {
  background: #eef1f4;
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 6px 10px;
  font-size: 0.88rem;
  cursor: pointer;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
}
.mini-btn:hover { background: #e2e8ee; }
a.mini-btn.primary { background: var(--accent); color: #fff; border-color: var(--accent); }

.privacy ul { margin: 10px 0 0; padding-left: 20px; }
.privacy li { margin: 6px 0; }

.tip-jar-row { display: flex; flex-wrap: wrap; gap: 22px; align-items: flex-start; margin-top: 14px; }
.tip-jar-qr { flex: none; text-align: center; }
.tip-jar-qr img {
  width: 132px; height: 132px;
  background: #fff;
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: 10px;
}
.tip-jar-caption { color: var(--muted); font-size: 0.88rem; margin: 8px 0 0; max-width: 164px; }
.tip-jar-details { flex: 1 1 260px; min-width: 0; }
.tip-jar-label { margin: 0 0 6px; font-weight: 600; font-size: 0.92rem; }
.tip-address {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  word-break: break-all;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  margin: 0 0 12px;
  font-size: 0.95rem;
}

.site-footer { padding: 26px 0 36px; color: var(--muted); text-align: center; font-size: 0.94rem; }

@media (max-width: 560px) {
  .hero h1 { font-size: 1.55rem; }
  .card { padding: 18px; }
  .controls { flex-direction: column; align-items: stretch; }
  .tip-jar-row { flex-direction: column; }
}