:root {
  --bg: #0a0a0f;
  --bg-2: #14141f;
  --bg-3: #1f1f2e;
  --text: #f2f2f6;
  --text-muted: #8a8a99;
  --accent: #00d4ff;
  --accent-2: #00ff88;
  --danger: #ff5566;
  --radius: 12px;
  --shadow: 0 4px 18px rgba(0, 0, 0, 0.4);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
               'Helvetica Neue', sans-serif;
  font-size: 16px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}

.hidden { display: none !important; }

main {
  max-width: 640px;
  margin: 0 auto;
  padding: 16px 16px 80px;
}

header h1 {
  font-size: 22px;
  margin: 4px 0 6px;
  font-weight: 600;
}
header .sub, .sub {
  color: var(--text-muted);
  font-size: 14px;
  margin: 0 0 12px;
}

/* ---- Pair screen ---- */
.pair-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.pair-card {
  width: 100%;
  max-width: 380px;
  background: var(--bg-2);
  border: 1px solid var(--bg-3);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  text-align: center;
}
.pair-card h1 {
  font-size: 22px;
  margin: 0 0 8px;
}
.pair-card p {
  color: var(--text-muted);
  font-size: 14px;
  margin: 0 0 18px;
}
#pair-input {
  width: 100%;
  font-family: 'SF Mono', Menlo, Consolas, monospace;
  font-size: 32px;
  font-weight: 600;
  letter-spacing: 0.32em;
  text-align: center;
  padding: 14px 12px;
  background: var(--bg);
  color: var(--accent);
  border: 1px solid var(--bg-3);
  border-radius: var(--radius);
  outline: none;
  margin-bottom: 14px;
}
#pair-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.18);
}
#pair-input::placeholder {
  color: var(--text-muted);
  letter-spacing: 0.32em;
}
#pair-submit {
  width: 100%;
}

/* ---- Tabs ---- */
.tabs {
  display: flex;
  gap: 6px;
  background: var(--bg-2);
  border: 1px solid var(--bg-3);
  border-radius: var(--radius);
  padding: 4px;
  margin: 14px 0 16px;
}
.tab-btn {
  flex: 1;
  appearance: none;
  background: transparent;
  color: var(--text-muted);
  border: 0;
  padding: 10px 12px;
  font-size: 14px;
  font-weight: 500;
  border-radius: 8px;
  cursor: pointer;
}
.tab-btn.active {
  background: var(--bg-3);
  color: var(--text);
}

/* ---- Inputs / buttons ---- */
input[type="text"], input[type="tel"], textarea {
  width: 100%;
  font: inherit;
  color: var(--text);
  background: var(--bg-2);
  border: 1px solid var(--bg-3);
  border-radius: var(--radius);
  padding: 12px 14px;
  outline: none;
}
input[type="text"]:focus, input[type="tel"]:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.18);
}
textarea {
  resize: vertical;
  min-height: 100px;
  margin-top: 10px;
}

.row {
  display: flex;
  gap: 10px;
  margin-top: 10px;
  align-items: center;
}
.btn-primary, .btn-secondary {
  appearance: none;
  border: 0;
  padding: 12px 18px;
  border-radius: var(--radius);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
.btn-primary {
  background: var(--accent);
  color: #001017;
}
.btn-primary:active { transform: scale(0.98); }
.btn-primary:disabled { opacity: 0.6; cursor: default; }
.btn-secondary {
  background: var(--bg-3);
  color: var(--text);
}

#form input#q {
  font-size: 18px;
}
#form .row { justify-content: flex-end; }
#send { min-width: 120px; }

.status {
  margin-top: 10px;
  font-size: 13px;
  color: var(--text-muted);
  min-height: 18px;
}
.status.error { color: var(--danger); }
.status.ok { color: var(--accent-2); }

.recent h2 {
  font-size: 13px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 22px 0 8px;
}
#recent {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.recent-item {
  width: 100%;
  text-align: left;
  background: var(--bg-2);
  border: 1px solid var(--bg-3);
  color: var(--text);
  padding: 10px 12px;
  border-radius: var(--radius);
  font: inherit;
  cursor: pointer;
}

/* ---- Browse tab ---- */
.browse-bar {
  display: flex;
  gap: 8px;
}
.browse-bar input { flex: 1; }
.browse-frame {
  display: block;
  width: 100%;
  height: 60vh;
  background: var(--bg-2);
  border: 1px solid var(--bg-3);
  border-radius: var(--radius);
  margin-top: 12px;
}

/* ---- Bookmarks mirror ---- */
.bm-mirror-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}
.bm-mirror-header h2 {
  font-size: 16px;
  margin: 0;
}
.bm-mirror-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.bm-row {
  display: block;
  width: 100%;
  text-align: left;
  background: var(--bg-2);
  border: 1px solid var(--bg-3);
  border-radius: var(--radius);
  padding: 10px 12px;
  color: var(--text);
  text-decoration: none;
  font: inherit;
  cursor: pointer;
}
.bm-row.bm-folder { font-weight: 600; }
.bm-row.bm-link:hover { border-color: var(--accent); }
.bm-mirror-empty {
  color: var(--text-muted);
  font-size: 14px;
  margin: 10px 0;
}

.bm-import {
  margin-top: 18px;
  background: var(--bg-2);
  border: 1px solid var(--bg-3);
  border-radius: var(--radius);
  padding: 12px 14px;
}
.bm-import summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}
.bm-import summary::-webkit-details-marker { display: none; }
.bm-import code {
  background: var(--bg-3);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 12px;
}

/* ---- Footer ---- */
.sync-footer {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: rgba(10, 10, 15, 0.92);
  border-top: 1px solid var(--bg-3);
  font-size: 12px;
  color: var(--text-muted);
  backdrop-filter: blur(8px);
}
.sync-footer code {
  background: var(--bg-3);
  color: var(--text);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 12px;
  letter-spacing: 0.05em;
}
.sync-change-btn {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--accent);
  font: inherit;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  padding: 4px 8px;
}