/* The Field Manuals — index.css : landing-page specific styles */

/* =================== HERO STAGE =================== */
.hero-stage {
  position: relative;
  background: var(--ink);
  color: #fff;
  overflow: hidden;
  border-bottom: 1px solid var(--ink-line);
}
.hero-stage::before { /* subtle grid texture */
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(oklch(1 0 0 / 0.03) 1px, transparent 1px),
                    linear-gradient(90deg, oklch(1 0 0 / 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(120% 90% at 70% 10%, #000 30%, transparent 80%);
  pointer-events: none;
}
.hero-stage::after { /* accent glow */
  content: ""; position: absolute; top: -20%; right: -10%; width: 60%; height: 80%;
  background: radial-gradient(circle, oklch(0.55 0.17 300 / 0.28), transparent 65%);
  filter: blur(20px); pointer-events: none;
}
.hero { display: none; position: relative; z-index: 2; padding-block: clamp(56px, 8vw, 104px) clamp(80px, 10vw, 128px); }
.hero-stage[data-hero="editorial"] .hero--editorial,
.hero-stage[data-hero="terminal"]  .hero--terminal,
.hero-stage[data-hero="index"]     .hero--index { display: block; }

.hero h1 { font-size: clamp(38px, 6.2vw, 78px); letter-spacing: -0.03em; line-height: 0.98; }
.hero h1 em { font-style: normal; color: var(--brand-ink); }
.hero .lede { color: var(--ink-soft); font-size: clamp(17px, 1.5vw, 21px); max-width: 46ch; margin-top: 22px; line-height: 1.55; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 32px; }
.hero-proof { display: flex; align-items: center; gap: 14px; margin-top: 28px; font-size: 14px; color: var(--ink-soft); font-family: var(--mono); }
.hero-proof .stars { color: #fff; }
.hero-proof .stars .val, .hero-proof .stars .cnt { color: #fff; }
.hero-proof .dot { width: 4px; height: 4px; border-radius: 50%; background: oklch(1 0 0 / 0.4); }

/* ---- Variant A: Editorial ---- */
.hero--editorial .grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: clamp(32px, 5vw, 64px); align-items: center; }
.cover-fan { position: relative; height: clamp(340px, 38vw, 460px); }
.cover-fan .cover { position: absolute; width: clamp(150px, 17vw, 210px); top: 50%; left: 50%; transform-origin: bottom center; }
.cover-fan .cf0 { transform: translate(-96%, -52%) rotate(-11deg); z-index: 1; }   /* RTRM — back left */
.cover-fan .cf1 { transform: translate(-4%, -52%) rotate(11deg);   z-index: 1; }   /* BTRM — back right */
.cover-fan .cf2 { transform: translate(-70%, -49%) rotate(-3.5deg); z-index: 3; }  /* PTFM — front left */
.cover-fan .cf3 { transform: translate(-22%, -50%) rotate(3.5deg);  z-index: 3; }  /* LFM  — front right */
.cover-fan .cover { transition: transform .35s cubic-bezier(.2,.7,.2,1); }
.cover-fan:hover .cf0 { transform: translate(-108%, -54%) rotate(-14deg); }
.cover-fan:hover .cf1 { transform: translate(8%, -54%) rotate(14deg); }

/* ---- Variant B: Command line ---- */
.hero--terminal { text-align: center; }
.hero--terminal .grid { max-width: 880px; margin-inline: auto; }
.hero--terminal h1 { max-width: 16ch; margin-inline: auto; }
.hero--terminal .lede { margin-inline: auto; }
.hero--terminal .hero-actions, .hero--terminal .hero-proof { justify-content: center; }
.terminal {
  margin-top: 44px; text-align: left; border-radius: 14px; overflow: hidden;
  background: oklch(0.13 0.012 264); border: 1px solid var(--ink-line);
  box-shadow: 0 30px 70px oklch(0 0 0 / 0.45); font-family: var(--mono); font-size: 14px;
}
.term-bar { display: flex; align-items: center; gap: 8px; padding: 12px 16px; background: oklch(0.16 0.012 264); border-bottom: 1px solid var(--ink-line); }
.term-bar i { width: 11px; height: 11px; border-radius: 50%; display: inline-block; }
.term-bar i:nth-child(1){background:oklch(0.62 0.2 25)} .term-bar i:nth-child(2){background:oklch(0.78 0.15 85)} .term-bar i:nth-child(3){background:oklch(0.68 0.16 150)}
.term-bar span { margin-left: 8px; color: oklch(1 0 0 / 0.45); font-size: 12px; }
.term-body { padding: 20px 22px; line-height: 1.85; color: oklch(1 0 0 / 0.8); }
.term-body .c-prompt { color: oklch(0.7 0.16 300); }
.term-body .c-cmd { color: #fff; }
.term-body .c-key { color: oklch(0.78 0.13 200); }
.term-body .c-dim { color: oklch(1 0 0 / 0.45); }
.term-body .row { display: grid; grid-template-columns: 92px 1fr auto; gap: 14px; }
.term-body .row .c-star { color: var(--star); }
.cursor { display: inline-block; width: 9px; height: 1.05em; background: oklch(0.7 0.16 300); vertical-align: -2px; animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* ---- Variant C: Index grid ---- */
.hero--index .grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(32px, 5vw, 56px); align-items: center; }
.idx-tiles { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.idx-tile {
  border: 1px solid var(--ink-line); border-radius: 12px; padding: 18px; background: oklch(1 0 0 / 0.02);
  transition: border-color .2s, background .2s, transform .2s; display: block;
}
.idx-tile:hover { border-color: oklch(0.6 0.16 var(--hue) / 0.7); background: oklch(0.6 0.16 var(--hue) / 0.08); transform: translateY(-2px); }
.idx-tile .ix-acr { font-family: var(--mono); font-size: 22px; font-weight: 600; letter-spacing: -0.01em; }
.idx-tile .ix-acr b { color: oklch(0.72 0.16 var(--hue)); }
.idx-tile .ix-title { font-size: 13px; color: var(--ink-soft); margin-top: 4px; }
.idx-tile .ix-foot { display: flex; justify-content: space-between; align-items: center; margin-top: 14px; font-family: var(--mono); font-size: 11px; color: oklch(1 0 0 / 0.4); }

/* =================== HERO SWITCHER =================== */
.hero-switch-wrap { position: relative; z-index: 5; display: flex; justify-content: center; margin-top: -36px; padding-bottom: 8px; }
.hero-switch { display: inline-flex; gap: 4px; padding: 5px; border-radius: 999px; background: oklch(0.13 0.012 264 / 0.9); border: 1px solid var(--ink-line); backdrop-filter: blur(10px); box-shadow: var(--shadow-md); }
.hero-switch button { display: inline-flex; align-items: center; gap: 8px; padding: 9px 16px; border-radius: 999px; color: oklch(1 0 0 / 0.6); font-size: 13.5px; font-weight: 500; transition: color .18s, background .18s; }
.hero-switch button .seg-k { font-family: var(--mono); font-size: 11px; opacity: 0.6; }
.hero-switch button:hover { color: #fff; }
.hero-switch button.on { background: #fff; color: var(--ink); }
.hero-switch button.on .seg-k { color: var(--brand); opacity: 1; }
.switch-hint { text-align: center; font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); margin: 14px 0 0; }

/* =================== STATS STRIP =================== */
.stats { background: var(--paper-2); border-bottom: 1px solid var(--line); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; padding-block: 44px; text-align: center; }
.stat .num { font-size: clamp(32px, 4vw, 48px); font-weight: 600; letter-spacing: -0.03em; }
.stat .lab { font-family: var(--mono); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin-top: 6px; }

/* =================== CATALOG =================== */
.catalog-top { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; flex-wrap: wrap; }
.chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
  display: inline-flex; align-items: center; gap: 7px; padding: 9px 15px; border-radius: 999px;
  border: 1px solid var(--line-2); font-size: 13.5px; font-weight: 500; color: var(--muted);
  transition: all .16s ease;
}
.chip span { font-family: var(--mono); font-size: 11px; opacity: 0.7; }
.chip:hover { border-color: var(--text); color: var(--text); }
.chip.on { background: var(--ink); color: #fff; border-color: var(--ink); }
.chip.on span { opacity: 0.8; }

.bgrid { display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(20px, 2.5vw, 32px); margin-top: 40px; transition: opacity .18s ease; }
.bcard { display: flex; flex-direction: column; }
.bcard-cover { position: relative; display: block; }
.card-flag {
  position: absolute; top: 10px; left: 10px; z-index: 4; font-family: var(--mono); font-size: 10px;
  letter-spacing: 0.1em; text-transform: uppercase; padding: 5px 9px; border-radius: 6px;
  background: oklch(0.74 0.16 75); color: oklch(0.2 0.02 75); font-weight: 600;
}
.card-flag.new { background: oklch(0.65 0.16 var(--hue)); color: #fff; }
.card-flag.soon { background: oklch(0.9 0.01 264); color: var(--muted); }
.card-flag.best {
  display: inline-flex; align-items: center; gap: 5px;
  background: linear-gradient(135deg, oklch(0.82 0.13 85), oklch(0.72 0.15 65));
  color: oklch(0.24 0.04 70); box-shadow: 0 4px 12px oklch(0.7 0.15 75 / 0.4); border: 1px solid oklch(0.88 0.1 85);
}
.card-flag.best svg { width: 11px; height: 11px; }
.bcard-body { padding-top: 18px; display: flex; flex-direction: column; flex: 1; }
.bcard-meta { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 10px; }
.bcard-meta .tag { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase; color: oklch(0.55 0.13 var(--hue)); }
.bcard h3 { font-size: 22px; letter-spacing: -0.02em; }
.bcard-sub { font-size: 14px; color: var(--text); margin-top: 3px; font-weight: 500; }
.bcard-blurb { font-size: 14.5px; color: var(--muted); margin-top: 8px; line-height: 1.5; flex: 1; }
.bcard-actions { display: flex; align-items: center; gap: 14px; margin-top: 16px; }
.bcard .card-buy { padding: 10px 16px; font-size: 13.5px; }
.bcard-detail { font-size: 13.5px; font-weight: 500; color: var(--muted); border-bottom: 1px solid transparent; }
.bcard-detail:hover { color: var(--text); border-color: var(--line-2); }

/* =================== REVIEWS =================== */
.reviews-sec { background: var(--ink); color: #fff; }
.reviews-sec .section-head h2 { color: #fff; }
.reviews-sec .section-head p { color: var(--ink-soft); }
.review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.review {
  margin: 0; padding: 26px; border-radius: var(--radius); background: oklch(1 0 0 / 0.03);
  border: 1px solid var(--ink-line); border-top: 2px solid oklch(0.62 0.16 var(--hue)); display: flex; flex-direction: column; gap: 14px;
}
.review-stars { color: var(--star); letter-spacing: 2px; font-size: 14px; }
.review blockquote { margin: 0; font-size: 17px; line-height: 1.55; color: #fff; letter-spacing: -0.01em; }
.review figcaption { font-size: 13px; color: var(--ink-soft); font-family: var(--mono); }
.review figcaption strong { display: block; color: #fff; font-family: var(--sans); font-size: 14px; margin-bottom: 2px; }
.review figcaption a { color: oklch(0.72 0.14 var(--hue)); }

/* =================== ABOUT TEASER =================== */
.about-teaser .grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: clamp(32px, 5vw, 64px); align-items: center; }
.author-card { position: relative; }
.author-photo {
  aspect-ratio: 4/5; border-radius: var(--radius-lg); background: var(--paper-2); border: 1px solid var(--line);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px; color: var(--muted);
  background-image: repeating-linear-gradient(135deg, oklch(0.93 0.005 264) 0 12px, oklch(0.96 0.004 95) 12px 24px);
}
.author-photo .ph-ico { width: 44px; height: 44px; opacity: 0.5; }
.author-photo .ph-cap { font-family: var(--mono); font-size: 12px; letter-spacing: 0.05em; }
.about-teaser h2 { font-size: clamp(28px, 4vw, 44px); margin-top: 16px; }
.about-teaser .ab-body { color: var(--muted); font-size: 18px; margin-top: 18px; max-width: 52ch; }
.cred-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 24px; }
.cred { font-family: var(--mono); font-size: 12px; letter-spacing: 0.06em; padding: 7px 12px; border-radius: 7px; background: var(--paper-2); border: 1px solid var(--line); color: var(--text); }

/* =================== NEWSLETTER =================== */
.news-sec { padding-bottom: clamp(72px, 9vw, 120px); }
.news-card {
  background: linear-gradient(135deg, oklch(0.2 0.02 300), var(--ink) 70%);
  border-radius: var(--radius-lg); padding: clamp(36px, 5vw, 60px); color: #fff; position: relative; overflow: hidden;
  border: 1px solid var(--ink-line);
}
.news-card::after { content: ""; position: absolute; right: -10%; bottom: -40%; width: 50%; height: 120%; background: radial-gradient(circle, oklch(0.6 0.17 300 / 0.3), transparent 65%); pointer-events: none; }
.news-card .nc-inner { position: relative; z-index: 2; max-width: 560px; }
.news-card h2 { font-size: clamp(26px, 3.4vw, 40px); }
.news-card p { color: var(--ink-soft); margin-top: 14px; font-size: 17px; }
.news-row { display: flex; gap: 10px; margin-top: 26px; flex-wrap: wrap; }
.news-row input {
  flex: 1; min-width: 220px; padding: 14px 18px; border-radius: 999px; border: 1px solid oklch(1 0 0 / 0.18);
  background: oklch(1 0 0 / 0.06); color: #fff; font: inherit; font-size: 15px;
}
.news-row input::placeholder { color: oklch(1 0 0 / 0.45); }
.news-row input:focus { outline: none; border-color: var(--brand-ink); background: oklch(1 0 0 / 0.1); }
.news-row input[aria-invalid] { border-color: oklch(0.65 0.2 25); }
.news-msg { margin-top: 16px; font-size: 15px; min-height: 1.2em; }
.news-msg.err { color: oklch(0.78 0.15 25); }
.news-msg.ok { color: oklch(0.82 0.13 150); }
.news-fine { margin-top: 14px; font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.04em; color: oklch(1 0 0 / 0.4); }

/* =================== reveal animation =================== */
[data-reveal] { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s cubic-bezier(.2,.7,.2,1); }
[data-reveal].in { opacity: 1; transform: none; }

/* =================== responsive =================== */
@media (max-width: 1040px) {
  .bgrid { grid-template-columns: repeat(2, 1fr); }
  .review-grid { grid-template-columns: 1fr; }
}
@media (max-width: 880px) {
  .hero--editorial .grid, .hero--index .grid, .about-teaser .grid { grid-template-columns: 1fr; }
  .cover-fan { height: 320px; margin-top: 12px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 32px 16px; }
  .author-card { max-width: 360px; }
}
@media (max-width: 520px) {
  .bgrid { grid-template-columns: 1fr; }
  .idx-tiles { grid-template-columns: 1fr; }
  .hero-switch button { padding: 9px 12px; font-size: 12.5px; }
}