/* QR Code Scanner - clean, modern, mobile-first styles (no frameworks) */

:root {
  --bg: #f6f8fc;
  --card: #ffffff;
  --text: #1a2333;
  --muted: #5b6b85;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --border: #e2e8f2;
  --success: #15803d;
  --error: #b91c1c;
  --radius: 12px;
  --shadow: 0 2px 10px rgba(20, 40, 90, 0.07);
}

* { box-sizing: border-box; }

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

.wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 16px;
}

/* ---------- header ---------- */
.site-header {
  background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
  color: #fff;
  padding: 36px 0 30px;
  text-align: center;
}
.brand { display: flex; align-items: center; justify-content: center; gap: 10px; }
.brand-icon { font-size: 2rem; }
.brand h1 { margin: 0; font-size: 2.2rem; letter-spacing: 0.5px; }
.tagline { margin: 8px 0 4px; font-size: 1.1rem; opacity: 0.95; }
.privacy-badge {
  display: inline-block;
  margin: 10px 0 0;
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.35);
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 0.92rem;
}

/* ---------- tabs ---------- */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0 0;
  justify-content: center;
}
.tab-btn {
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.tab-btn:hover { border-color: var(--primary); color: var(--primary); }
.tab-btn.active { background: var(--primary); border-color: var(--primary); color: #fff; }

/* ---------- panels ---------- */
.tool-panel {
  display: none;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 26px;
  margin: 18px 0 8px;
}
.tool-panel.active { display: block; }
.tool-panel h2 { margin-top: 0; }
.how { color: var(--muted); }

/* ---------- dropzone ---------- */
.dropzone {
  border: 2px dashed #b9c6e2;
  border-radius: var(--radius);
  background: #fafcff;
  text-align: center;
  padding: 34px 18px;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  margin: 16px 0;
}
.dropzone:hover { border-color: var(--primary); }
.dropzone.drag { border-color: var(--primary); background: #eef4ff; }
.dropzone:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.dz-icon { font-size: 2rem; }
.dz-sub { color: var(--muted); font-size: 0.9rem; margin: 4px 0 0; }

/* ---------- buttons ---------- */
.btn-primary, .btn-secondary, .btn-ghost {
  border: none;
  border-radius: 10px;
  padding: 12px 22px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, opacity 0.15s;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--primary-dark); }
.btn-primary:disabled { opacity: 0.45; cursor: not-allowed; }
.btn-secondary { background: #eef2f9; color: var(--text); }
.btn-secondary:hover { background: #e0e8f7; }
.btn-ghost { background: transparent; color: var(--muted); border: 1px solid var(--border); }
.btn-ghost:hover { color: var(--text); border-color: #b9c6e2; }
.row { display: flex; flex-wrap: wrap; gap: 10px; margin: 14px 0; align-items: center; }

/* ---------- camera ---------- */
.qr-video {
  width: 100%;
  max-width: 560px;
  border-radius: var(--radius);
  background: #0b1020;
  margin: 12px auto;
  display: block;
}

/* ---------- result ---------- */
.qr-result-box {
  background: #f4f7fd;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  margin: 16px 0;
}
.qr-result-box h3 { margin: 0 0 6px; font-size: 1.05rem; }
.qr-type { color: var(--muted); font-size: 0.9rem; margin: 0 0 10px; }
.qr-text {
  width: 100%;
  min-height: 90px;
  resize: vertical;
  padding: 12px 14px;
  font-size: 1rem;
  font-family: inherit;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  color: var(--text);
  word-break: break-all;
}
.qr-wifi {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin: 12px 0 0;
}
.qr-wifi div { background: #fff; border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; }
.qr-wifi dt { font-size: 0.78rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.4px; }
.qr-wifi dd { margin: 2px 0 0; font-weight: 600; word-break: break-all; }
@media (max-width: 480px) { .qr-wifi { grid-template-columns: 1fr; } }

.qr-no-result {
  background: #fff7ed;
  border: 1px solid #fed7aa;
  color: #9a3412;
  border-radius: var(--radius);
  padding: 16px 18px;
  margin: 16px 0;
}

/* ---------- status ---------- */
.status { margin: 12px 0 0; font-size: 0.95rem; min-height: 1.2em; }
.status.show.info { color: var(--muted); }
.status.show.success { color: var(--success); font-weight: 600; }
.status.show.error { color: var(--error); font-weight: 600; }

/* ---------- faq ---------- */
.faq {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 26px;
  margin: 26px 0;
}
.faq h2 { margin-top: 0; }
.faq h3 { margin: 18px 0 4px; font-size: 1.02rem; }
.faq p { margin: 4px 0 0; color: var(--muted); }

/* ---------- footer ---------- */
.site-footer {
  text-align: center;
  color: var(--muted);
  padding: 26px 0 40px;
  font-size: 0.92rem;
}
.site-footer .fine { font-size: 0.82rem; }

.hidden { display: none !important; }

/* ---------- responsive ---------- */
@media (max-width: 600px) {
  .tool-panel, .faq { padding: 18px 14px; }
  .brand h1 { font-size: 1.7rem; }
  .tab-btn { padding: 9px 14px; font-size: 0.88rem; }
}