:root {
  --bg: #0d0f0c;
  --bg-raised: #14170f;
  --bg-card: #171a13;
  --ink: #ece7d9;
  --ink-dim: #a9a894;
  --ink-faint: #6f715f;
  --accent: #c8ff4d;
  --accent-dim: #8fae3c;
  --line: #2a2d21;
  --danger: #ff6b57;
  --radius: 2px;
  --mono: 'IBM Plex Mono', ui-monospace, monospace;
  --serif: 'Fraunces', Georgia, serif;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 16px;
  line-height: 1.55;
}

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 999;
  opacity: 0.05;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 28px;
}

/* Topbar */
.topbar {
  border-bottom: 1px solid var(--line);
  padding: 18px 0;
  position: sticky;
  top: 0;
  background: rgba(13, 15, 12, 0.92);
  backdrop-filter: blur(6px);
  z-index: 10;
}
.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.brand {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.3rem;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 8px;
}
.brand-mark { color: var(--accent); font-size: 1rem; }
.brand-name em { font-style: italic; color: var(--accent); }

.toolnav {
  display: flex;
  gap: 4px;
  font-size: 0.82rem;
}
.toolnav a {
  color: var(--ink-faint);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.toolnav a:hover { color: var(--ink); }
.toolnav a[aria-current="page"] {
  color: var(--accent);
  border-color: var(--line);
  background: var(--bg-card);
}

.topbar-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.72rem;
  color: var(--ink-dim);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(200, 255, 77, 0.6);
  animation: pulse 2.2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(200, 255, 77, 0.55); }
  70% { box-shadow: 0 0 0 8px rgba(200, 255, 77, 0); }
  100% { box-shadow: 0 0 0 0 rgba(200, 255, 77, 0); }
}

/* Hero */
.hero {
  padding: 72px 0 40px;
}
.hero h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.015em;
  margin: 0 0 22px;
  max-width: 14ch;
}
.hero .lede {
  color: var(--ink-dim);
  max-width: 56ch;
  font-size: 0.98rem;
}

/* Tool */
.tool { padding: 20px 0 48px; }

.dropzone {
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease;
  background: var(--bg-raised);
}
.dropzone:hover, .dropzone:focus-visible, .dropzone.dragover {
  border-color: var(--accent-dim);
  background: #171b12;
  outline: none;
}
.dropzone-icon {
  display: inline-block;
  font-size: 1.6rem;
  color: var(--accent);
  margin-bottom: 10px;
}
.dropzone-inner p { margin: 4px 0; }
.dropzone-hint { color: var(--ink-faint); font-size: 0.82rem; }

.split-panel {
  margin-top: 20px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-raised);
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.split-meta {
  color: var(--accent-dim);
  font-size: 0.82rem;
  letter-spacing: 0.01em;
}
.split-mode {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.split-mode-option {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--ink-dim);
  cursor: pointer;
}
.split-mode-option input { accent-color: var(--accent); }
.split-mode-option:has(input:checked) { color: var(--ink); }
.split-range {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.split-range label {
  font-size: 0.82rem;
  color: var(--ink-faint);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.split-range input {
  flex: 1;
  min-width: 200px;
  background: var(--bg);
  border: 1px solid var(--line);
  color: var(--ink);
  padding: 10px 14px;
  border-radius: var(--radius);
  font-family: var(--mono);
  font-size: 0.88rem;
}
.split-range input:focus { outline: none; border-color: var(--accent-dim); }

.file-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.file-list:empty { margin: 0; }

.file-row {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 10px 14px;
  cursor: grab;
}
.file-row.dragging { opacity: 0.4; }
.file-row .handle { color: var(--ink-faint); font-size: 0.9rem; }
.file-row .name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.88rem;
}
.file-row .size { color: var(--ink-faint); font-size: 0.78rem; flex-shrink: 0; }
.file-row .remove {
  background: none;
  border: none;
  color: var(--ink-faint);
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  padding: 2px 4px;
}
.file-row .remove:hover { color: var(--danger); }

.actions {
  display: flex;
  gap: 12px;
  margin-top: 20px;
  align-items: center;
}

.btn {
  font-family: var(--mono);
  font-size: 0.86rem;
  font-weight: 500;
  border-radius: var(--radius);
  padding: 12px 22px;
  cursor: pointer;
  border: 1px solid transparent;
  letter-spacing: 0.01em;
  transition: transform 0.12s ease, background 0.15s ease;
}
.btn:active { transform: scale(0.98); }
.btn-primary {
  background: var(--accent);
  color: #0d0f0c;
}
.btn-primary:hover { background: #d9ffa0; }
.btn-primary:disabled {
  background: var(--line);
  color: var(--ink-faint);
  cursor: not-allowed;
}
.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--ink-dim);
}
.btn-ghost:hover { border-color: var(--ink-faint); color: var(--ink); }

.result {
  margin-top: 24px;
  padding: 18px;
  border: 1px solid var(--accent-dim);
  border-radius: var(--radius);
  background: #171f0e;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.result strong { color: var(--accent); }
.result .btn-primary { text-decoration: none; display: inline-block; }
.result-error {
  border-color: var(--danger);
  background: #201211;
}
.result-error strong { color: var(--danger); }

@keyframes resultIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}
.result:not([hidden]) {
  animation: resultIn 0.35s cubic-bezier(0.16, 1, 0.3, 1) both;
}

/* Proof */
.proof { padding: 8px 0 56px; border-top: 1px solid var(--line); }
.proof-live {
  margin-top: 32px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
  color: var(--accent-dim);
  letter-spacing: 0.01em;
}
.proof-live-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(200, 255, 77, 0.6);
  animation: pulse 2.2s infinite;
  flex-shrink: 0;
}
.proof-grid {
  padding-top: 24px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.proof-item h3 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.05rem;
  margin: 0 0 8px;
  color: var(--accent);
}
.proof-item p {
  color: var(--ink-dim);
  font-size: 0.85rem;
  margin: 0;
}

/* Pro / waitlist */
.pro { padding: 0 0 72px; }
.pro-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-raised);
  padding: 36px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.pro-card h2 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.5rem;
  margin: 0 0 8px;
}
.pro-copy p { color: var(--ink-dim); margin: 0; max-width: 56ch; font-size: 0.9rem; }
.pro-copy a { color: var(--accent); }
.pro-form {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.pro-form input {
  flex: 1;
  min-width: 220px;
  background: var(--bg);
  border: 1px solid var(--line);
  color: var(--ink);
  padding: 12px 14px;
  border-radius: var(--radius);
  font-family: var(--mono);
  font-size: 0.86rem;
}
.pro-form input:focus { outline: none; border-color: var(--accent-dim); }
.pro-note { color: var(--accent-dim); font-size: 0.82rem; margin: 0; }

/* Footer */
.article { padding: 8px 0 64px; max-width: 680px; }
.article h1 { font-family: var(--serif); font-weight: 500; font-size: 2rem; line-height: 1.2; margin: 0 0 8px; }
.article .article-meta { color: var(--ink-faint); font-size: 0.8rem; margin: 0 0 32px; }
.article h2 { font-family: var(--serif); font-weight: 500; font-size: 1.35rem; margin: 40px 0 12px; color: var(--ink); }
.article h3 { font-size: 1rem; margin: 24px 0 8px; color: var(--ink); }
.article p { color: var(--ink-dim); margin: 0 0 16px; }
.article ul, .article ol { color: var(--ink-dim); margin: 0 0 16px; padding-left: 22px; }
.article li { margin-bottom: 6px; }
.article a { color: var(--accent); }
.article strong { color: var(--ink); }
.article code { background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1px 5px; font-size: 0.85em; }
.article table { width: 100%; border-collapse: collapse; margin: 0 0 24px; font-size: 0.85rem; }
.article th, .article td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); color: var(--ink-dim); }
.article th { color: var(--ink); font-weight: 600; }
.article .cta-box { background: var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 24px; margin: 32px 0; }
.article .cta-box p { margin: 0 0 12px; }

.footer {
  border-top: 1px solid var(--line);
  padding: 22px 0 40px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--ink-faint);
  font-size: 0.76rem;
}
.footer-inner a { color: var(--ink-dim); }

@media (max-width: 640px) {
  .proof-grid { grid-template-columns: 1fr; }
  .hero { padding: 48px 0 32px; }
}

@media (prefers-reduced-motion: reduce) {
  .result:not([hidden]) { animation: none; }
  .dot, .proof-live-dot { animation: none; }
}