:root {
  --paper: #f5f7f8;
  --ink: #16202c;
  --ink-soft: #5b6773;
  --cobalt: #1f4fd8;
  --cobalt-deep: #16359a;
  --mint: #0f6e56;
  --line: #d4dae0;
  --card: #ffffff;
  --danger: #a32d2d;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --sans: "Sora", system-ui, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  display: flex;
  justify-content: center;
  padding: 9vh 20px 40px;
}

.shell { width: 100%; max-width: 640px; }

.masthead h1 {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 34px;
  letter-spacing: -0.03em;
  margin: 0 0 4px;
}

.cursor {
  color: var(--cobalt);
  animation: blink 1.2s steps(2) infinite;
}
@keyframes blink { 50% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .cursor { animation: none; } }

.tagline {
  margin: 0 0 36px;
  color: var(--ink-soft);
  font-size: 15px;
}

.field-label {
  display: block;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

.input-row { display: flex; gap: 10px; }

#url-input {
  flex: 1;
  font-family: var(--mono);
  font-size: 14px;
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--card);
  color: var(--ink);
  min-width: 0;
}
#url-input:focus-visible {
  outline: 2px solid var(--cobalt);
  outline-offset: 1px;
  border-color: var(--cobalt);
}

#shorten-btn, #copy-btn {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 14px;
  padding: 13px 20px;
  border: none;
  border-radius: 8px;
  background: var(--cobalt);
  color: #fff;
  cursor: pointer;
}
#shorten-btn:hover, #copy-btn:hover { background: var(--cobalt-deep); }
#shorten-btn:focus-visible, #copy-btn:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}
#shorten-btn:disabled { opacity: 0.6; cursor: wait; }

.meta {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-soft);
  min-height: 18px;
  margin: 8px 2px 0;
}

.error {
  font-size: 13px;
  color: var(--danger);
  margin: 8px 2px 0;
}

/* Compression receipt */
.receipt {
  margin-top: 34px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px 20px;
}

.receipt-row {
  display: grid;
  grid-template-columns: 34px 1fr auto;
  gap: 12px;
  align-items: baseline;
  padding: 8px 0;
}

.receipt-tag {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.receipt-url {
  font-family: var(--mono);
  font-size: 13px;
  word-break: break-all;
  color: var(--ink-soft);
}
.receipt-url.short {
  font-size: 16px;
  font-weight: 500;
  color: var(--cobalt);
  text-decoration: none;
}
.receipt-url.short:hover { text-decoration: underline; }
.receipt-url.short:focus-visible { outline: 2px solid var(--cobalt); outline-offset: 2px; }

.receipt-count {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-soft);
  white-space: nowrap;
}

.receipt-divider {
  border-top: 1px dashed var(--line);
  margin: 6px 0;
  position: relative;
  height: 14px;
}

.savings {
  position: absolute;
  top: -9px;
  right: 0;
  background: var(--card);
  padding: 0 8px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--mint);
}

.receipt-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 10px;
}
.receipt-actions .meta { margin: 0; }

@media (max-width: 480px) {
  .input-row { flex-direction: column; }
  #shorten-btn { width: 100%; }
  .receipt-row { grid-template-columns: 34px 1fr; }
  .receipt-count { grid-column: 2; }
}