/* ============================================================
   INKWELL — Editorial Dark Lab Stylesheet
   Fonts: Playfair Display (headings) + JetBrains Mono (data)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,600;0,700;1,400;1,600&family=JetBrains+Mono:wght@300;400;500&family=Crimson+Pro:wght@300;400;600&display=swap');

/* ── Variables ─────────────────────────────────────────────── */
:root {
  --bg:         #0e0d0b;
  --bg-raised:  #151410;
  --bg-card:    #1a1916;
  --border:     #2e2b24;
  --border-lit: #3d3a30;
  --text:       #f0e6c8;
  --text-muted: #8a8070;
  --text-dim:   #5a5548;
  --amber:      #e8a020;
  --amber-dim:  #7a5510;
  --red:        #c0392b;
  --green:      #4a9e6a;
  --blue:       #4a7fa0;
  --cream:      #f5edd8;
  --font-head:  'Playfair Display', Georgia, serif;
  --font-body:  'Crimson Pro', Georgia, serif;
  --font-mono:  'JetBrains Mono', 'Courier New', monospace;
  --radius:     2px;
  --transition: 0.25s ease;
}

/* ── Reset ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1.1rem;
  font-weight: 300;
  line-height: 1.7;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* Grain overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 1000;
  opacity: 0.4;
}

/* ── Typography ─────────────────────────────────────────────── */
h1, h2, h3 {
  font-family: var(--font-head);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); }
h3 { font-size: 1.2rem; }

p { color: var(--text); }

a {
  color: var(--amber);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover { color: var(--cream); }

em { font-style: italic; color: var(--text-muted); }

/* ── Layout ─────────────────────────────────────────────────── */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}

.container--narrow {
  max-width: 780px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ── Navigation ─────────────────────────────────────────────── */
.nav {
  border-bottom: 1px solid var(--border);
  padding: 1.2rem 0;
  position: sticky;
  top: 0;
  background: rgba(14, 13, 11, 0.95);
  backdrop-filter: blur(12px);
  z-index: 100;
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}

.nav__logo {
  font-family: var(--font-head);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--cream);
  letter-spacing: -0.03em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav__logo span {
  color: var(--amber);
}

.nav__links {
  display: flex;
  gap: 2rem;
  list-style: none;
  align-items: center;
}

.nav__links a {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color var(--transition);
}

.nav__links a:hover,
.nav__links a.active {
  color: var(--amber);
}

.nav__kofi {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.45rem 1rem;
  border: 1px solid var(--amber-dim);
  color: var(--amber);
  border-radius: var(--radius);
  transition: all var(--transition);
  white-space: nowrap;
}

.nav__kofi:hover {
  background: var(--amber);
  color: var(--bg);
  border-color: var(--amber);
}

/* ── Hero (index only) ──────────────────────────────────────── */
.hero {
  padding: 7rem 0 5rem;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: 'INKWELL';
  position: absolute;
  right: -1rem;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-head);
  font-size: clamp(6rem, 15vw, 14rem);
  font-weight: 700;
  color: transparent;
  -webkit-text-stroke: 1px var(--border-lit);
  pointer-events: none;
  user-select: none;
  letter-spacing: -0.05em;
  opacity: 0.5;
}

.hero__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.hero__label::before {
  content: '';
  display: inline-block;
  width: 2rem;
  height: 1px;
  background: var(--amber);
}

.hero h1 {
  max-width: 640px;
  margin-bottom: 1.5rem;
}

.hero h1 em {
  color: var(--amber);
  font-style: italic;
}

.hero__sub {
  color: var(--text-muted);
  font-size: 1.15rem;
  max-width: 500px;
  margin-bottom: 3rem;
  font-weight: 300;
}

/* ── Tool Cards (index) ─────────────────────────────────────── */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin: 4rem 0;
}

.tool-card {
  background: var(--bg);
  padding: 2.5rem 2rem;
  transition: background var(--transition);
  cursor: pointer;
  text-decoration: none;
  display: block;
  position: relative;
  overflow: hidden;
}

.tool-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px;
  height: 0;
  background: var(--amber);
  transition: height 0.3s ease;
}

.tool-card:hover { background: var(--bg-card); }
.tool-card:hover::before { height: 100%; }

.tool-card__icon {
  font-size: 1.8rem;
  margin-bottom: 1.2rem;
  display: block;
}

.tool-card__title {
  font-family: var(--font-head);
  font-size: 1.25rem;
  color: var(--cream);
  margin-bottom: 0.5rem;
}

.tool-card__desc {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.tool-card__arrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--amber);
  margin-top: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  opacity: 0;
  transform: translateX(-8px);
  transition: all var(--transition);
}

.tool-card:hover .tool-card__arrow {
  opacity: 1;
  transform: translateX(0);
}

/* ── Tool Page Header ───────────────────────────────────────── */
.tool-header {
  padding: 3.5rem 0 2.5rem;
  border-bottom: 1px solid var(--border);
}

.tool-header__back {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  transition: color var(--transition);
}

.tool-header__back:hover { color: var(--amber); }

.tool-header__icon {
  font-size: 2rem;
  margin-bottom: 0.8rem;
  display: block;
}

.tool-header h1 { margin-bottom: 0.5rem; }

.tool-header__sub {
  color: var(--text-muted);
  font-size: 1.05rem;
  font-weight: 300;
}

/* ── Tool Workspace ─────────────────────────────────────────── */
.workspace {
  padding: 3rem 0;
}

.workspace__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
  min-height: 420px;
}

@media (max-width: 768px) {
  .workspace__layout { grid-template-columns: 1fr; }
}

.workspace__input,
.workspace__output {
  background: var(--bg-raised);
  padding: 2rem;
  position: relative;
}

.workspace__label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.workspace__label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ── Textarea ───────────────────────────────────────────────── */
.ink-textarea {
  width: 100%;
  min-height: 300px;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.8;
  resize: vertical;
  font-weight: 300;
}

.ink-textarea::placeholder { color: var(--text-dim); font-style: italic; }

/* ── Button ─────────────────────────────────────────────────── */
.ink-btn {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.75rem 2rem;
  background: var(--amber);
  color: var(--bg);
  border: none;
  cursor: pointer;
  border-radius: var(--radius);
  transition: all var(--transition);
  font-weight: 500;
}

.ink-btn:hover {
  background: var(--cream);
  transform: translateY(-1px);
}

.ink-btn:active { transform: translateY(0); }

.ink-btn--ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border-lit);
}

.ink-btn--ghost:hover {
  background: var(--bg-card);
  color: var(--text);
}

.btn-row {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  margin-top: 1.2rem;
  flex-wrap: wrap;
}

/* ── Word count indicator ───────────────────────────────────── */
.word-count {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  margin-top: 0.5rem;
}

/* ── Results ────────────────────────────────────────────────── */
.result-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  min-height: 200px;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-align: center;
  gap: 1rem;
}

.result-empty__icon { font-size: 2.5rem; opacity: 0.3; }

/* Tone bars */
.tone-bar-wrap { margin-bottom: 1.2rem; }

.tone-bar-label {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
  text-transform: uppercase;
}

.tone-bar-track {
  height: 6px;
  background: var(--border);
  border-radius: 0;
  overflow: hidden;
}

.tone-bar-fill {
  height: 100%;
  background: var(--amber);
  width: 0;
  transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 0;
}

.tone-bar-fill--red   { background: var(--red); }
.tone-bar-fill--green { background: var(--green); }
.tone-bar-fill--blue  { background: var(--blue); }
.tone-bar-fill--amber { background: var(--amber); }

/* Score badge */
.score-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.35rem 0.8rem;
  border: 1px solid var(--border-lit);
  border-radius: var(--radius);
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.score-badge--amber { border-color: var(--amber-dim); color: var(--amber); }
.score-badge--red   { border-color: var(--red); color: var(--red); }
.score-badge--green { border-color: var(--green); color: var(--green); }

/* Highlighted text */
.highlight-weasel      { background: rgba(192, 57, 43, 0.25); color: #e88; border-bottom: 1px solid var(--red); }
.highlight-absolute    { background: rgba(232, 160, 32, 0.2); color: var(--amber); border-bottom: 1px solid var(--amber); }
.highlight-emotional   { background: rgba(74, 127, 160, 0.2); color: #7ab; border-bottom: 1px solid var(--blue); }
.highlight-passive     { background: rgba(74, 158, 106, 0.15); color: #7c8; border-bottom: 1px solid var(--green); }

/* Paragraph difficulty */
.para-block {
  padding: 0.6rem 1rem;
  border-left: 3px solid transparent;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  line-height: 1.6;
  position: relative;
}

.para-block--easy   { border-color: var(--green); background: rgba(74, 158, 106, 0.07); }
.para-block--medium { border-color: var(--amber); background: rgba(232, 160, 32, 0.07); }
.para-block--hard   { border-color: var(--red);   background: rgba(192, 57, 43, 0.07); }

.para-tag {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.6;
  margin-bottom: 0.2rem;
  display: block;
}

/* Author card */
.author-card {
  border: 1px solid var(--border-lit);
  padding: 1.8rem;
  background: var(--bg-card);
  margin-bottom: 1rem;
}

.author-card__name {
  font-family: var(--font-head);
  font-size: 1.8rem;
  font-style: italic;
  color: var(--cream);
  margin-bottom: 0.3rem;
}

.author-card__match {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--amber);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.author-card__desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
  font-style: italic;
}

/* Radar chart placeholder */
.radar-wrap {
  margin-top: 1.5rem;
}

/* Stats row */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin-bottom: 1.5rem;
}

.stat-cell {
  background: var(--bg-card);
  padding: 1rem;
  text-align: center;
}

.stat-cell__value {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  color: var(--amber);
  font-weight: 500;
  display: block;
  line-height: 1;
  margin-bottom: 0.3rem;
}

.stat-cell__label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
}

/* ── Insight note ───────────────────────────────────────────── */
.insight {
  border-left: 2px solid var(--amber-dim);
  padding: 0.8rem 1rem;
  background: rgba(232, 160, 32, 0.05);
  font-size: 0.9rem;
  color: var(--text-muted);
  font-style: italic;
  margin-top: 1rem;
}

/* ── Legend ─────────────────────────────────────────────────── */
.legend {
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.legend-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* ── Footer ─────────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border);
  padding: 3rem 0;
  margin-top: 5rem;
}

.footer__inner {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 2rem;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}

@media (max-width: 640px) {
  .footer__inner { grid-template-columns: 1fr; }
  .nav__links { display: none; }
}

.footer__brand {
  font-family: var(--font-head);
  font-size: 1.3rem;
  color: var(--cream);
  margin-bottom: 0.5rem;
}

.footer__tagline {
  font-size: 0.85rem;
  color: var(--text-dim);
  font-style: italic;
}

.footer__heading {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 1rem;
}

.footer__links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer__links a {
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: color var(--transition);
}

.footer__links a:hover { color: var(--amber); }

.footer__bottom {
  max-width: 1100px;
  margin: 2rem auto 0;
  padding: 1.5rem 2rem 0;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer__copy {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 0.06em;
}

/* ── Animations ─────────────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.animate-up { animation: fadeUp 0.5s ease forwards; }
.animate-in { animation: fadeIn 0.4s ease forwards; }

/* Staggered children */
.stagger > * { opacity: 0; animation: fadeUp 0.5s ease forwards; }
.stagger > *:nth-child(1) { animation-delay: 0.05s; }
.stagger > *:nth-child(2) { animation-delay: 0.12s; }
.stagger > *:nth-child(3) { animation-delay: 0.19s; }
.stagger > *:nth-child(4) { animation-delay: 0.26s; }
.stagger > *:nth-child(5) { animation-delay: 0.33s; }

/* ── Utility ────────────────────────────────────────────────── */
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.text-mono { font-family: var(--font-mono); }
.text-muted { color: var(--text-muted); }
.text-amber { color: var(--amber); }
.text-sm { font-size: 0.85rem; }
.divider { border: none; border-top: 1px solid var(--border); margin: 2rem 0; }

/* ── Mobile nav burger ──────────────────────────────────────── */
.nav__burger {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav__burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-muted);
  transition: background var(--transition);
}
.nav__burger:hover span { background: var(--amber); }

@media (max-width: 768px) {
  .nav__burger { display: flex; }
  .nav__links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 1rem 2rem;
    flex-direction: column;
    gap: 0.8rem;
  }
  .nav__links.open { display: flex; }
  .nav__links li { list-style: none; }
  .nav__links a { font-size: 0.85rem; }
}
.nav { position: relative; }

/* ── High contrast / accessibility ─────────────────────────── */
@media (prefers-contrast: high) {
  :root {
    --bg: #000;
    --text: #fff;
    --border: #fff;
    --amber: #ffcc00;
  }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ── Focus visible (keyboard nav) ───────────────────────────── */
:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}
a:focus-visible, button:focus-visible { outline: 2px solid var(--amber); }

/* ── Skip to content ────────────────────────────────────────── */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--amber);
  color: var(--bg);
  padding: 0.5rem 1rem;
  z-index: 9999;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}
.skip-link:focus { top: 0; }

/* ── Hero CTA row ────────────────────────────────────────────── */
.hero__cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: center;
}

/* ── Ad slot (hidden until enabled) ─────────────────────────── */
.ad-slot {
  display: none;
  text-align: center;
  margin: 2rem 0;
}
.ad-slot.visible { display: block; }

/* ── FAQ Section ───────────────────────────────────────────── */
.faq-section { padding: 3rem 0; border-top: 1px solid var(--border); }
.faq-section h2 {
  font-family: var(--font-head);
  font-size: 1.4rem;
  color: var(--cream);
  margin-bottom: 1.8rem;
  font-style: italic;
}
.faq-item {
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--border);
}
.faq-item:last-child { border-bottom: none; }
.faq-q {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--amber);
  letter-spacing: 0.02em;
  margin-bottom: 0.5rem;
  font-weight: 600;
}
.faq-a {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 680px;
}