/* TempBox — dark slate + cyan, inspired by the classic 10minutemail layout */
:root {
  --bg-base: rgb(15 23 42);
  --bg-elevated: rgb(30 41 59);
  --bg-surface: rgb(51 65 85);
  --bg-hover: rgba(71 85 105 / 0.5);
  --text-primary: rgb(241 245 249);
  --text-secondary: rgb(178 190 205);
  --text-tertiary: rgb(148 163 184);
  --text-muted: rgb(100 116 139);
  --border-subtle: rgba(71 85 105 / 0.5);
  --border-default: rgba(100 116 139 / 0.4);
  --border-strong: rgba(148 163 184 / 0.5);
  --accent: rgb(34 211 238);
  --accent-hover: rgb(103 232 249);
  --accent-muted: rgba(34 211 238 / 0.15);
  --accent-glow: rgba(34 211 238 / 0.4);
  --danger: rgb(248 113 113);
  --radius: 16px;
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.2), 0 4px 8px rgba(0, 0, 0, 0.1);
  --font-body: 'Space Grotesk', 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

/* the [hidden] attribute must win over component display rules */
[hidden] { display: none !important; }

html, body { height: 100%; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text-primary);
  background-color: var(--bg-base);
  background-image:
    radial-gradient(60% 50% at 15% 0%, rgba(34 211 238 / 0.10), transparent 60%),
    radial-gradient(50% 40% at 85% 10%, rgba(80 89 123 / 0.18), transparent 60%),
    radial-gradient(45% 45% at 70% 90%, rgba(22 178 202 / 0.07), transparent 60%);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  background: rgba(15 23 42 / 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-subtle);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}
.logo:hover { color: var(--text-primary); }

.logo-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}

.nav { display: flex; gap: 20px; font-size: 14px; }
.nav a { color: var(--text-tertiary); }
.nav a:hover { color: var(--text-primary); }

/* ---------- layout ---------- */
.container {
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  padding: 40px 20px 64px;
  flex: 1;
}

.hero { text-align: center; margin-bottom: 28px; }
.hero h1 {
  margin: 0 0 10px;
  font-size: clamp(26px, 4vw, 36px);
  letter-spacing: -0.03em;
}
.hero p {
  margin: 0 auto;
  max-width: 520px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.6;
}

/* ---------- cards ---------- */
.card {
  background: linear-gradient(180deg, rgba(30 41 59 / 0.92), rgba(30 41 59 / 0.78));
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 22px;
  backdrop-filter: blur(8px);
}

/* ---------- domain picker ---------- */
.domain-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.domain-label {
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.domain-select {
  flex: 1 1 auto;
  max-width: 340px;
  appearance: none;
  background: var(--bg-base) url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath fill='%2394a3b8' d='M6 8 0 0h12z'/%3E%3C/svg%3E") no-repeat right 14px center;
  border: 1px solid var(--border-default);
  border-radius: 10px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 14px;
  padding: 10px 34px 10px 14px;
  cursor: pointer;
}
.domain-select:focus { outline: 2px solid var(--accent-muted); border-color: var(--accent); }
.domain-select option { background: var(--bg-elevated); color: var(--text-primary); }

.domain-hint {
  margin-top: 12px;
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid var(--accent-muted);
  background: rgba(34 211 238 / 0.06);
  color: var(--text-secondary);
  font-size: 12.5px;
  line-height: 1.55;
}

/* ---------- address row ---------- */
.address-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.address {
  flex: 1 1 280px;
  font-family: var(--mono);
  font-size: clamp(15px, 2.4vw, 19px);
  font-weight: 600;
  letter-spacing: 0.01em;
  padding: 14px 16px;
  border-radius: 12px;
  background: var(--bg-base);
  border: 1px solid var(--border-default);
  color: var(--accent);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  user-select: all;
}

.icon-btn {
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--border-default);
  background: var(--bg-surface);
  color: var(--text-primary);
  font-size: 18px;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.05s ease;
}
.icon-btn:hover { background: var(--bg-hover); }
.icon-btn:active { transform: scale(0.96); }

.badge {
  flex: 0 0 auto;
  font-size: 12px;
  color: var(--text-tertiary);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  padding: 6px 12px;
  white-space: nowrap;
}
.badge b { color: var(--accent); }

/* ---------- timer row ---------- */
.timer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px dashed var(--border-subtle);
}

.timer {
  font-family: var(--mono);
  font-size: clamp(30px, 6vw, 42px);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text-primary);
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
  font-variant-numeric: tabular-nums;
}
.timer .colon { color: var(--text-muted); animation: blink 2s steps(2, start) infinite; }
.timer.warning { color: var(--danger); }
@keyframes blink { to { visibility: hidden; } }

.btn-primary {
  appearance: none;
  border: 0;
  border-radius: 12px;
  padding: 13px 20px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  color: rgb(8 47 73);
  background: linear-gradient(180deg, var(--accent-hover), var(--accent));
  box-shadow: 0 4px 14px rgba(34 211 238 / 0.25);
  cursor: pointer;
  transition: filter 0.15s ease, transform 0.05s ease;
}
.btn-primary:hover { filter: brightness(1.06); }
.btn-primary:active { transform: translateY(1px); }
.btn-primary:disabled { opacity: 0.6; cursor: default; }

.btn-ghost {
  appearance: none;
  border: 1px solid var(--border-default);
  background: transparent;
  color: var(--text-secondary);
  border-radius: 10px;
  padding: 9px 14px;
  font-family: var(--font-body);
  font-size: 13px;
  cursor: pointer;
}
.btn-ghost:hover { background: var(--bg-hover); color: var(--text-primary); }

/* ---------- expired banner ---------- */
.expired {
  margin-top: 18px;
  padding: 16px;
  border-radius: 12px;
  border: 1px solid rgba(248 113 113 / 0.35);
  background: rgba(248 113 113 / 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 14px;
  color: var(--text-secondary);
}

/* ---------- inbox ---------- */
.inbox { margin-top: 20px; min-height: 210px; }

.empty { text-align: center; padding: 34px 10px 12px; }
.empty-title { font-weight: 600; margin-top: 22px; }
.empty-sub { color: var(--text-tertiary); font-size: 13px; margin-top: 6px; line-height: 1.5; }

/* radar animation (inspired by the original's inbox radar) */
.radar {
  position: relative;
  width: 120px;
  height: 120px;
  margin: 0 auto;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34 211 238 / 0.10), transparent 70%);
}
.radar .ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid rgba(34 211 238 / 0.22);
  animation: pulse 3.2s ease-out infinite;
}
.radar .r2 { animation-delay: 1.05s; }
.radar .r3 { animation-delay: 2.1s; }
.radar .sweep {
  position: absolute;
  inset: 8px;
  border-radius: 50%;
  background: conic-gradient(from 0deg, rgba(34 211 238 / 0.55), transparent 70deg);
  animation: spin 3.6s linear infinite;
  mask-image: radial-gradient(circle, transparent 18%, black 60%);
  -webkit-mask-image: radial-gradient(circle, transparent 18%, black 60%);
}
.radar .dot {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 10px;
  height: 10px;
  margin: -5px 0 0 -5px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 14px var(--accent-glow);
}
@keyframes pulse {
  0% { transform: scale(0.55); opacity: 0.9; }
  80% { transform: scale(1.05); opacity: 0; }
  100% { transform: scale(1.05); opacity: 0; }
}
@keyframes spin { to { transform: rotate(360deg); } }

.msg-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }

.msg {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 12px;
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-elevated);
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
  text-align: left;
  font-family: inherit;
  color: inherit;
  width: 100%;
}
.msg:hover { border-color: var(--border-strong); background: var(--bg-surface); }
.msg .from { font-size: 13px; color: var(--text-secondary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.msg .time { font-size: 12px; color: var(--text-muted); white-space: nowrap; }
.msg .subject { font-weight: 600; font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.msg .preview { grid-column: 1 / -1; font-size: 12.5px; color: var(--text-tertiary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.msg .clip { grid-column: 1 / -1; font-size: 11.5px; color: var(--accent); }

/* ---------- detail ---------- */
.detail { margin-top: 20px; }
.detail h2 { margin: 14px 0 6px; font-size: 20px; letter-spacing: -0.02em; }
.detail .meta { color: var(--text-tertiary); font-size: 13px; display: flex; flex-wrap: wrap; gap: 4px 14px; }
.detail .meta span { white-space: nowrap; }
.detail .body { margin-top: 16px; }
.detail .body pre {
  margin: 0;
  padding: 16px;
  border-radius: 12px;
  background: var(--bg-base);
  border: 1px solid var(--border-subtle);
  white-space: pre-wrap;
  word-break: break-word;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-primary);
}
.detail iframe {
  width: 100%;
  min-height: 320px;
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  background: #fff;
}
.detail details { margin-top: 14px; }
.detail summary {
  cursor: pointer;
  color: var(--text-tertiary);
  font-size: 13px;
  padding: 6px 0;
}
.detail details pre { margin-top: 8px; }

.attachments { margin-top: 14px; display: flex; flex-direction: column; gap: 8px; }
.attachment {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 14px;
  border-radius: 10px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-elevated);
  font-size: 13px;
}
.attachment .size { color: var(--text-muted); white-space: nowrap; }

/* ---------- ad slots ---------- */
.ad-slot {
  margin-top: 28px;
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px dashed var(--border-subtle);
  border-radius: var(--radius);
  color: var(--text-muted);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  padding: 20px 24px 28px;
  color: var(--text-muted);
  font-size: 12.5px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
  text-align: center;
}
.footer-links { display: flex; gap: 16px; }
.footer-links a { color: var(--text-tertiary); }

/* ---------- toast ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translate(-50%, 16px);
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  padding: 10px 16px;
  font-size: 13px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease;
  z-index: 50;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 560px) {
  .container { padding: 26px 14px 48px; }
  .card { padding: 16px; }
  .timer-row { flex-direction: column; align-items: stretch; }
  .btn-primary { width: 100%; }
  .nav { display: none; }
}