/* Misikiri / Levelupp — shared site theme.
 * Source of visual truth: misikiri.com (Fraunces + Outfit, white, amber).
 * Used by index.html (company), product.html (Levelupp), mcp.html (Levelupp MCP).
 */

:root {
  --bg:          #FFFFFF;
  --surface:     #F8F8F9;
  --text:        #111720;
  --muted:       #72737C;
  --subtle:      #A8A9B0;
  --amber:       #D97706;
  --amber-bg:    #FFFBEB;
  --amber-text:  #92400E;
  --amber-dark:  #B45309;
  --border:      #E4E4E7;
  --serif: 'Fraunces', Georgia, serif;
  --sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "SF Mono", "Fira Code", "JetBrains Mono", Menlo, Consolas, monospace;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-weight: 300;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

::selection { background: var(--amber); color: #fff; }

a { color: var(--amber); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

strong { font-weight: 500; }
em { font-style: normal; }   /* no italics site-wide — emphasis carried by serif + colour */

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 32px; }
.wrap-narrow { max-width: 760px; margin: 0 auto; padding: 0 40px; }

/* ── Nav ─────────────────────────────────────────────────────────────────── */

nav.site-nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1080px; margin: 0 auto; padding: 0 32px;
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.logo {
  font-family: var(--sans);
  font-weight: 500; font-size: 14px;
  letter-spacing: 0.1em;            /* wordmark is written literally: MiSiKiRi */
  color: var(--text);
}
.logo:hover { text-decoration: none; }
.logo span { color: var(--amber); }
.nav-links { display: flex; align-items: center; gap: 30px; }
.nav-links a { color: var(--muted); font-size: 14px; font-weight: 400; }
.nav-links a:hover { color: var(--text); text-decoration: none; }
.nav-links a.active { color: var(--text); font-weight: 500; }
.nav-cta {
  background: var(--amber); color: #fff !important;
  padding: 8px 20px; border-radius: 100px; font-weight: 500 !important;
  transition: background .15s ease;
}
.nav-cta:hover { background: var(--amber-dark); }
.nav-toggle { display: none; background: none; border: none; color: var(--text); font-size: 24px; cursor: pointer; }

/* breadcrumb identity line used on product/mcp pages */
.crumb {
  font-size: 12px; font-weight: 400; letter-spacing: 0.04em;
  color: var(--subtle); margin-bottom: 20px;
}
.crumb a { color: var(--muted); }
.crumb a:hover { color: var(--amber); }
.crumb .sep { margin: 0 7px; color: var(--border); }
.crumb .here { color: var(--amber-text); font-weight: 500; }

/* ── Type ────────────────────────────────────────────────────────────────── */

h1 {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(38px, 4.8vw, 58px);
  line-height: 1.08;
  letter-spacing: -0.025em;
  color: var(--text);
  margin-bottom: 26px;
}
h1 em, h2 em { font-style: normal; font-weight: 300; color: var(--muted); }

h2 {
  font-family: var(--serif);
  font-size: clamp(28px, 3.4vw, 40px); font-weight: 300;
  color: var(--text); letter-spacing: -0.02em; line-height: 1.18;
  margin-bottom: 16px;
}
h3 { color: var(--text); font-family: var(--sans); font-size: 17px; font-weight: 500; margin-bottom: 8px; }
.split h3 { font-family: var(--serif); font-weight: 400; letter-spacing: -0.015em; line-height: 1.3; margin-bottom: 12px; }

.eyebrow-tag {
  font-size: 11px; font-weight: 500;
  letter-spacing: 0.13em; text-transform: uppercase;
  color: var(--amber-text);
}

.badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 5px 14px; border-radius: 100px;
  background: var(--amber-bg); color: var(--amber-text);
  font-size: 11px; font-weight: 500;
  letter-spacing: 0.13em; text-transform: uppercase;
  margin-bottom: 36px;
}
.badge-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--amber); flex-shrink: 0; }

.accent-rule { width: 40px; height: 2px; background: var(--amber); }

/* ── Hero ────────────────────────────────────────────────────────────────── */

.hero { padding: 104px 0 112px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 64px; align-items: center; }
.hero p.lead { font-size: 18px; font-weight: 300; color: var(--muted); max-width: 520px; line-height: 1.75; margin-bottom: 36px; }
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-meta { margin-top: 30px; font-size: 13px; color: var(--muted); display: flex; gap: 14px; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px; border-radius: 100px;
  font-size: 15px; font-weight: 400; cursor: pointer;
  transition: background .15s ease, border-color .15s ease, color .15s ease;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--amber); color: #fff; font-weight: 500; }
.btn-primary:hover { background: var(--amber-dark); }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-ghost:hover { border-color: var(--amber); color: var(--amber); }

/* ── Sections ────────────────────────────────────────────────────────────── */

section { padding: 96px 0; }
section.alt { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.sec-head { text-align: center; max-width: 660px; margin: 0 auto 60px; }
.sec-head::after {
  content: ""; display: block;
  width: 40px; height: 2px; background: var(--amber);
  margin: 32px auto 0;
}
.sec-head .eyebrow-tag { display: inline-block; margin-bottom: 18px; }
.sec-head p { color: var(--muted); font-size: 16.5px; font-weight: 300; line-height: 1.75; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 3px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 3px; }

/* ── Cards (misikiri style: flat, square, amber left-border on hover) ────── */

.card {
  background: var(--surface);
  padding: 32px 30px;
  border-left: 2px solid transparent;
  transition: border-left-color .15s ease, background .15s ease;
}
.card:hover { border-left-color: var(--amber); background: #fff; }
section.alt .card { background: #fff; border: 1px solid var(--border); border-left: 2px solid transparent; }
section.alt .card:hover { border-left-color: var(--amber); }
.card .icon {
  width: 42px; height: 42px; border-radius: 8px;
  background: var(--amber-bg);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px; font-size: 18px;
}
.card p { color: var(--muted); font-size: 14.5px; font-weight: 300; line-height: 1.7; }

a.card-link { display: block; color: inherit; }
a.card-link:hover { text-decoration: none; }
.card-arrow { color: var(--amber); font-size: 14px; font-weight: 400; margin-top: 14px; display: inline-block; }

/* misikiri "if" cards (home audience section) */
.card-list { display: flex; flex-direction: column; gap: 3px; }
.if-card {
  background: var(--surface);
  padding: 30px 36px;
  border-left: 2px solid transparent;
  transition: border-left-color 0.15s ease, background 0.15s ease;
}
.if-card:hover { border-left-color: var(--amber); background: #fff; }
.card-if {
  font-family: var(--serif); font-style: normal; font-weight: 300;
  font-size: 15px; color: var(--muted); margin-bottom: 10px; line-height: 1.55;
}
.card-body { font-size: 16px; font-weight: 300; color: var(--text); line-height: 1.65; }

/* steps */
.step-num {
  font-family: var(--serif); font-weight: 300; font-style: normal;
  font-size: 32px; color: var(--amber); line-height: 1;
  margin-bottom: 16px;
}

/* ── Splits + checklists ─────────────────────────────────────────────────── */

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.split + .split { margin-top: 96px; }
.split p { color: var(--muted); font-size: 15.5px; font-weight: 300; line-height: 1.75; margin-bottom: 14px; }
.checklist { list-style: none; margin-top: 20px; }
.checklist li {
  display: flex; gap: 12px; align-items: flex-start;
  color: var(--text); font-size: 14.5px; font-weight: 300; margin-bottom: 13px;
}
.checklist li::before {
  content: "✓"; flex: none;
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--amber-bg); color: var(--amber-text);
  font-size: 11px; font-weight: 500;
  display: flex; align-items: center; justify-content: center;
  margin-top: 3px;
}

/* ── Terminal mockup (dark artifact) ─────────────────────────────────────── */

.term {
  background: var(--text);
  border-radius: 10px;
  box-shadow: 0 24px 56px rgba(17, 23, 32, 0.16);
  overflow: hidden;
  font-family: var(--mono);
  font-size: 12.5px;
}
.term-bar {
  display: flex; align-items: center; gap: 7px;
  padding: 11px 16px; border-bottom: 1px solid rgba(255,255,255,.08);
  background: #1A212C;
}
.term-bar i { width: 11px; height: 11px; border-radius: 50%; display: inline-block; }
.term-bar i:nth-child(1) { background: #f87171; }
.term-bar i:nth-child(2) { background: #fbbf24; }
.term-bar i:nth-child(3) { background: #4ade80; }
.term-bar span { margin-left: 8px; color: #8B95A8; font-size: 11.5px; }
.term-body { padding: 18px 20px; line-height: 1.75; color: #C8D0DE; }
.t-dim { color: #5A6372; }
.t-user { color: #E8EBF0; }
.t-acc { color: #F0A848; }
.t-blue { color: #9AA7B8; }
.t-warn { color: #FCD34D; }
.t-block {
  display: block; margin: 10px 0; padding: 12px 14px;
  background: rgba(240, 168, 72, 0.07);
  border-left: 2px solid #F0A848;
  color: #DCE1E9;
}

/* ── Code boxes ──────────────────────────────────────────────────────────── */

.codebox {
  background: var(--text);
  border-radius: 10px; overflow: hidden; position: relative;
  box-shadow: 0 16px 40px rgba(17, 23, 32, 0.12);
}
.codebox-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 16px; border-bottom: 1px solid rgba(255,255,255,.08);
  font-size: 12px; color: #8B95A8; font-family: var(--mono);
  background: #1A212C;
}
.copy-btn {
  background: transparent; border: 1px solid rgba(255,255,255,.18); color: #8B95A8;
  font-size: 11.5px; padding: 4px 14px; border-radius: 100px; cursor: pointer;
  font-family: var(--sans); transition: all .15s ease;
}
.copy-btn:hover { color: #F0A848; border-color: #F0A848; }
pre {
  padding: 18px 20px; overflow-x: auto;
  font-family: var(--mono); font-size: 13px; line-height: 1.7;
  color: #DCE1E9;
}
.codebox .c-key { color: #E8EBF0; }
.codebox .c-str { color: #F0A848; }
.codebox .c-com { color: #5A6372; }
.codebox .c-punc { color: #8B95A8; }

/* JSON snippets inside light cards */
.card .c-key { color: var(--text); font-weight: 400; }
.card .c-str { color: var(--amber-dark); }
.card .c-com { color: var(--subtle); }
.card .c-punc { color: var(--muted); }

.inline-code {
  font-family: var(--mono); font-size: 13px;
  color: var(--amber-text); background: var(--amber-bg);
  padding: 1px 6px; border-radius: 4px;
}

/* ── Tabs ────────────────────────────────────────────────────────────────── */

.tabs { display: flex; gap: 8px; margin-bottom: 18px; flex-wrap: wrap; }
.tab {
  background: transparent; border: 1px solid var(--border); color: var(--muted);
  padding: 8px 20px; border-radius: 100px; font-size: 13.5px; font-weight: 400;
  cursor: pointer; font-family: var(--sans); transition: all .15s ease;
}
.tab:hover { color: var(--text); border-color: var(--subtle); }
.tab.active { background: var(--amber-bg); border-color: rgba(217, 119, 6, 0.35); color: var(--amber-text); font-weight: 500; }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ── Tools grid ──────────────────────────────────────────────────────────── */

.tools-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 3px; }
.tool-card {
  background: #fff; border: 1px solid var(--border);
  border-left: 2px solid transparent;
  padding: 26px 24px;
  transition: border-left-color .15s ease;
}
.tool-card:hover { border-left-color: var(--amber); }
.tool-name {
  font-family: var(--mono); font-size: 14px; font-weight: 600;
  color: var(--text); margin-bottom: 8px; display: block;
}
.tool-card p { color: var(--muted); font-size: 13.5px; font-weight: 300; line-height: 1.65; }
.tool-tag {
  display: inline-block; font-size: 10px; font-weight: 500;
  letter-spacing: 0.13em; text-transform: uppercase;
  padding: 3px 11px; border-radius: 100px; margin-bottom: 14px;
}
.tag-core { background: var(--amber-bg); color: var(--amber-text); }
.tag-session { background: #F1F2F4; color: #52525B; }
.tag-aidlc { background: transparent; border: 1px solid rgba(217, 119, 6, 0.4); color: var(--amber); }

/* ── Pills ───────────────────────────────────────────────────────────────── */

.ko-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 20px; }
.ko-pill {
  background: #fff; border: 1px solid var(--border);
  padding: 7px 18px; border-radius: 100px; font-size: 13px; color: var(--text);
  font-family: var(--mono);
}

/* ── FAQ ─────────────────────────────────────────────────────────────────── */

.faq { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 3px; }
details {
  background: var(--surface);
  border-left: 2px solid transparent;
  padding: 0 28px;
  transition: border-left-color .15s ease, background .15s ease;
}
details[open] { border-left-color: var(--amber); background: #fff; outline: 1px solid var(--border); }
summary {
  cursor: pointer; list-style: none;
  padding: 21px 0; font-weight: 400; color: var(--text); font-size: 15.5px;
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--amber); font-size: 21px; font-weight: 300; flex: none; transition: transform .2s ease; }
details[open] summary::after { transform: rotate(45deg); }
details p { color: var(--muted); font-size: 14.5px; font-weight: 300; line-height: 1.75; padding-bottom: 22px; }
details em { font-family: var(--serif); }
details code { font-family: var(--mono); font-size: 13px; color: var(--amber-text); background: var(--amber-bg); padding: 1px 6px; border-radius: 4px; }

/* ── CTA band ────────────────────────────────────────────────────────────── */

.cta-band {
  background: var(--amber-bg);
  border: 1px solid rgba(217, 119, 6, 0.2);
  padding: 72px 48px; text-align: center;
}
.cta-band p { color: var(--muted); max-width: 540px; margin: 0 auto 32px; font-size: 16px; font-weight: 300; line-height: 1.75; }

/* ── Footer ──────────────────────────────────────────────────────────────── */

footer.site-footer { border-top: 1px solid var(--border); padding: 64px 0 48px; background: var(--bg); }
.foot-grid { display: flex; justify-content: space-between; align-items: flex-start; gap: 40px; flex-wrap: wrap; }
.foot-col h4 { color: var(--text); font-size: 11px; font-weight: 500; letter-spacing: 0.13em; text-transform: uppercase; margin-bottom: 16px; }
.foot-col a { display: block; color: var(--muted); font-size: 14px; font-weight: 300; margin-bottom: 10px; }
.foot-col a:hover { color: var(--amber); text-decoration: none; }
.foot-bottom { margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--border); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; color: var(--subtle); font-size: 12px; font-weight: 300; letter-spacing: 0.02em; }
.foot-brand { max-width: 300px; }
.foot-brand p { color: var(--muted); font-size: 13.5px; font-weight: 300; margin-top: 14px; line-height: 1.7; }

/* ── Toast ───────────────────────────────────────────────────────────────── */

.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(80px);
  background: var(--text); color: #fff;
  border-radius: 100px;
  padding: 11px 24px; font-size: 13px; font-weight: 400; z-index: 9999;
  box-shadow: 0 8px 24px rgba(17, 23, 32, 0.25);
  opacity: 0; transition: all .25s ease; pointer-events: none;
}
.toast.visible { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ── Reveal on scroll ────────────────────────────────────────────────────── */

.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ── Home (misikiri editorial) ───────────────────────────────────────────── */

.home-hero { padding: 88px 0 104px; }
.home-section { padding: 0 0 104px; }
.home-rule { margin-bottom: 72px; }
.problem-stack { margin-bottom: 32px; }
.p-line {
  display: block;
  font-family: var(--serif); font-weight: 300;
  font-size: clamp(23px, 3.2vw, 34px);
  line-height: 1.45; color: var(--muted); padding: 5px 0;
}
.p-line.dark { color: var(--text); }
.bridge { font-family: var(--sans); font-size: 17px; font-weight: 400; color: var(--text); margin-top: 8px; }
.bridge strong { color: var(--amber); font-weight: 500; }
.bridge a { color: var(--amber); font-weight: 500; }
.home-eyebrow { margin-bottom: 36px; display: block; }
.home-sub { font-size: 18px; font-weight: 300; color: var(--muted); max-width: 500px; line-height: 1.75; }

/* flagship product block (home) */
.flagship {
  background: var(--surface);
  border-left: 2px solid var(--amber);
  padding: 44px 40px;
}
.flagship-name {
  font-family: var(--serif); font-weight: 300;
  font-size: 36px; letter-spacing: -0.02em;
  color: var(--text); margin-bottom: 4px;
}
.flagship-name span { color: var(--amber); }
.flagship-tag {
  font-family: var(--serif); font-style: normal; font-weight: 300;
  color: var(--muted); font-size: 17px; margin-bottom: 20px;
}
.flagship-body { font-size: 15.5px; font-weight: 300; color: var(--muted); line-height: 1.75; max-width: 540px; margin-bottom: 26px; }
.flagship-links { display: flex; gap: 28px; flex-wrap: wrap; }
.flagship-links a { font-size: 14px; font-weight: 400; }

/* road rows (home — where this goes) */
.road { display: flex; flex-direction: column; gap: 28px; }
.road-row { display: grid; grid-template-columns: 96px 1fr; gap: 20px; align-items: baseline; }
.road-when {
  font-size: 11px; font-weight: 500;
  letter-spacing: 0.13em; text-transform: uppercase;
  color: var(--amber-text);
}
.road-row p { color: var(--text); font-size: 16px; font-weight: 300; line-height: 1.7; }
.road-row p em { font-family: var(--serif); color: var(--muted); }
@media (max-width: 640px) {
  .road-row { grid-template-columns: 1fr; gap: 6px; }
  .flagship { padding: 32px 24px; }
}

.home-footer { padding: 64px 0 88px; border-top: 1px solid var(--border); }
.footer-heading { font-family: var(--serif); font-weight: 300; font-size: 27px; color: var(--text); letter-spacing: -0.01em; margin-bottom: 14px; }
.footer-body { font-size: 15px; font-weight: 300; color: var(--muted); max-width: 460px; line-height: 1.8; margin-bottom: 28px; }
.footer-email a { font-size: 14px; font-weight: 400; color: var(--amber); }

/* ── Responsive ──────────────────────────────────────────────────────────── */

@media (max-width: 920px) {
  .hero-grid, .split, .grid-3, .grid-2, .tools-grid { grid-template-columns: 1fr; }
  .split { gap: 40px; }
  .split.flip > :first-child { order: 2; }
  .hero { padding: 64px 0 72px; }
  section { padding: 72px 0; }
  .wrap { padding: 0 24px; }
  .nav-links {
    display: none; position: absolute; top: 64px; left: 0; right: 0;
    background: var(--bg); border-bottom: 1px solid var(--border);
    flex-direction: column; padding: 20px 24px; align-items: flex-start; gap: 18px;
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  .cta-band { padding: 48px 26px; }
  .card { padding: 26px 22px; }
}

@media (max-width: 640px) {
  .wrap-narrow { padding: 0 24px; }
  .home-hero { padding: 60px 0 80px; }
  .home-section { padding-bottom: 80px; }
  .home-rule { margin-bottom: 56px; }
  .if-card { padding: 24px 22px; }
}