@import url("https://fonts.googleapis.com/css2?family=Fraunces:wght@300;500;700&family=JetBrains+Mono:wght@400;600&display=swap");

:root {
  color-scheme: light;
  --bg-1: #f7f3ed;
  --bg-2: #eff6fb;
  --panel: #ffffffcc;
  --ink: #211d1a;
  --muted: #6b6762;
  --border: #e6e0d6;
  --accent: #2f7a58;
  --accent-soft: #dff0e7;
  --shadow: 0 24px 60px rgba(39, 33, 28, 0.08);
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Fraunces", "Times New Roman", serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 20%, #ffffff 0%, transparent 45%),
    radial-gradient(circle at 85% 10%, #f2f7ff 0%, transparent 40%),
    linear-gradient(145deg, var(--bg-1), var(--bg-2));
}

.app {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 24px 72px;
  display: grid;
  gap: 24px;
}

.header {
  display: grid;
  gap: 8px;
}

.home-link {
  width: fit-content;
  color: var(--accent);
  font-family: "JetBrains Mono", "Courier New", monospace;
  font-size: 0.8rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid #d1e2d8;
  border-radius: 999px;
  padding: 8px 12px;
}

.home-link:hover {
  background: var(--accent-soft);
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.72rem;
  color: var(--muted);
  margin: 0;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 3vw, 3rem);
  font-weight: 600;
}

.subtitle {
  margin: 0;
  color: var(--muted);
  max-width: 520px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 24px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
}

form.panel {
  display: grid;
  gap: 18px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.field {
  display: grid;
  gap: 8px;
  font-size: 0.95rem;
}

.field span {
  color: var(--muted);
}

input {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 1rem;
  font-family: "JetBrains Mono", "Courier New", monospace;
  background: #fff;
  color: var(--ink);
  outline: none;
}

input:focus {
  border-color: #bfd7c8;
  box-shadow: 0 0 0 3px rgba(70, 140, 104, 0.18);
}

.action {
  border: none;
  border-radius: 999px;
  padding: 12px 24px;
  background: var(--accent);
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  width: fit-content;
}

.action:hover {
  filter: brightness(1.05);
}

.action.secondary {
  background: #f1f5f1;
  color: var(--accent);
  border: 1px solid #d1e2d8;
}

.output {
  display: grid;
  gap: 12px;
}

.result-line {
  display: grid;
  gap: 10px;
}

.result-label {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  color: var(--muted);
}

.result-value {
  font-family: "JetBrains Mono", "Courier New", monospace;
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  padding: 16px;
  border-radius: 16px;
  background: #fff;
  border: 1px solid var(--border);
  min-height: 64px;
  display: flex;
  align-items: center;
  word-break: normal;
  overflow-wrap: break-word;
}

.result-number {
  display: block;
  width: 100%;
  min-width: 0;
  max-width: 100%;
  white-space: normal;
}

.repeat {
  color: var(--accent);
  font-weight: 700;
}

.repeat-note {
  margin: 0;
  padding: 10px 14px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
  width: fit-content;
}

.pattern-block {
  display: grid;
  gap: 10px;
  padding: 14px;
  border-radius: 16px;
  background: #fff;
  border: 1px solid var(--border);
}

.pattern-label {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  color: var(--muted);
}

.pattern-values {
  font-family: "JetBrains Mono", "Courier New", monospace;
  font-size: 1rem;
  color: var(--ink);
  word-break: break-word;
}

.pattern-note {
  margin: 0;
  color: var(--accent);
  font-weight: 600;
}

.basic-panel {
  display: grid;
  gap: 12px;
}

.basic-header {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.basic-label {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  color: var(--muted);
}

.basic-subtitle {
  color: var(--muted);
  font-size: 0.9rem;
}

.basic-list {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 10px;
  font-family: "JetBrains Mono", "Courier New", monospace;
  color: var(--ink);
}

.basic-list li {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  display: grid;
  grid-template-columns: 2.4rem 1fr;
  gap: 12px;
  align-items: center;
}

.pattern-index {
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 999px;
  display: grid;
  place-items: center;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 700;
}

.pattern-body {
  word-break: break-word;
}

.basic-empty {
  margin: 0;
  color: var(--muted);
}

.export-controls {
  display: grid;
  gap: 12px;
  padding-top: 6px;
  border-top: 1px solid var(--border);
}

#bfile-status {
  margin: 0;
  color: var(--accent);
}

.error {
  margin: 0;
  color: #b04646;
  font-weight: 600;
}

.hidden {
  display: none;
}

@media (max-width: 600px) {
  .app {
    padding: 32px 18px 60px;
  }

  .panel {
    padding: 20px;
  }

  .action {
    width: 100%;
    text-align: center;
  }
}