@import url('https://fonts.googleapis.com/css2?family=Newsreader:ital,wght@0,400;0,500;1,400&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  --paper: #ECEEF2;
  --paper-line: #C9CEDA;
  --ink: #1E2A44;
  --ink-soft: #4B5670;
  --pen: #B23A2E;
  --pen-dark: #8F2C22;
  --stamp: #3F6B4A;
  --white: #F8F9FB;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  background-image:
    linear-gradient(var(--paper-line) 1px, transparent 1px);
  background-size: 100% 2.1rem;
  color: var(--ink);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 15px;
  line-height: 1.6;
}

.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 3rem 1.5rem 5rem;
}

header.site {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 2.5rem;
}

.wordmark {
  font-family: 'Newsreader', serif;
  font-size: 1.15rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.wordmark span { color: var(--pen); font-style: italic; }

.tagline-small {
  font-size: 0.72rem;
  color: var(--ink-soft);
}

.hero h1 {
  font-family: 'Newsreader', serif;
  font-weight: 500;
  font-size: clamp(2rem, 5vw, 2.9rem);
  line-height: 1.15;
  margin: 0 0 0.9rem;
  max-width: 15ch;
}

.hero p {
  color: var(--ink-soft);
  max-width: 52ch;
  margin: 0 0 2.5rem;
  font-size: 0.95rem;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--ink);
  margin-bottom: 0;
}

.tab {
  background: transparent;
  border: 1px solid var(--ink);
  border-bottom: none;
  padding: 0.6rem 1rem;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.82rem;
  color: var(--ink-soft);
  cursor: pointer;
  margin-right: -1px;
  position: relative;
  top: 1px;
}

.tab.active {
  background: var(--white);
  color: var(--ink);
  font-weight: 500;
  border-bottom: 1px solid var(--white);
}

.tab:hover:not(.active) { color: var(--ink); }

.panel {
  background: var(--white);
  border: 1px solid var(--ink);
  border-top: none;
  padding: 2rem;
}

.panel-desc {
  color: var(--ink-soft);
  font-size: 0.85rem;
  margin: 0 0 1.5rem;
}

.dropzone {
  border: 1px dashed var(--paper-line);
  padding: 2.5rem 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s ease;
}

.dropzone.drag {
  border-color: var(--pen);
  color: var(--pen);
}

.dropzone p { margin: 0.3rem 0; }
.dropzone .primary { font-size: 0.95rem; }
.dropzone .secondary { font-size: 0.75rem; color: var(--ink-soft); }

input[type="file"] { display: none; }

.filelist {
  margin-top: 1rem;
  font-size: 0.8rem;
  color: var(--ink-soft);
}

.filelist div { padding: 0.2rem 0; border-bottom: 1px solid var(--paper-line); }

.options {
  display: flex;
  gap: 1.5rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
  align-items: center;
}

.options label {
  font-size: 0.78rem;
  color: var(--ink-soft);
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.options input[type="range"] { width: 160px; }
.options input[type="text"] {
  font-family: inherit;
  border: 1px solid var(--paper-line);
  padding: 0.4rem 0.5rem;
  background: transparent;
  color: var(--ink);
}

button.action {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.85rem;
  background: var(--pen);
  color: var(--white);
  border: none;
  padding: 0.75rem 1.5rem;
  cursor: pointer;
  margin-top: 1.75rem;
}

button.action:hover { background: var(--pen-dark); }
button.action:disabled { background: var(--paper-line); color: var(--ink-soft); cursor: not-allowed; }

.status {
  margin-top: 1.5rem;
  font-size: 0.85rem;
  padding: 1rem;
  border: 1px solid var(--paper-line);
  display: none;
}

.status.show { display: block; }
.status.error { border-color: var(--pen); color: var(--pen-dark); }
.status.success { border-color: var(--stamp); }

.status .stamp {
  color: var(--stamp);
  font-weight: 500;
}

.status a.download {
  display: inline-block;
  margin-top: 0.6rem;
  color: var(--stamp);
  text-decoration: underline;
}

.privacy-note {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px dashed var(--paper-line);
  font-size: 0.75rem;
  color: var(--ink-soft);
  position: relative;
}

.privacy-note strong { color: var(--ink); }

footer.site {
  margin-top: 3rem;
  font-size: 0.72rem;
  color: var(--ink-soft);
}

@media (max-width: 600px) {
  .panel { padding: 1.25rem; }
  .tab { font-size: 0.74rem; padding: 0.5rem 0.7rem; }
}