/* ============================================================
   Beveram AI · beveram.com
   Design system: deep navy, committed blue, Unbounded + Onest
   ============================================================ */

:root {
  --bg: oklch(14.5% 0.022 258);
  --bg-deep: oklch(11.5% 0.02 258);
  --bg-raised: oklch(18.5% 0.026 258);
  --bg-panel: oklch(21% 0.03 258);
  --text: oklch(96.5% 0.006 250);
  --text-soft: oklch(84% 0.014 252);
  --muted: oklch(70% 0.02 252);
  --faint: oklch(62% 0.02 252);
  --brand: oklch(58% 0.21 262);         /* electric blue, logo #1d4ed8 family */
  --brand-strong: oklch(50% 0.22 262);
  --sky: oklch(78% 0.13 230);           /* logo #38bdf8 family */
  --sky-soft: oklch(78% 0.13 230 / .14);
  --line: oklch(100% 0 0 / 0.09);
  --line-strong: oklch(100% 0 0 / 0.16);
  --ok: oklch(75% 0.15 160);
  --radius: 14px;
  --radius-lg: 22px;
  --font-display: 'Unbounded', 'Onest', system-ui, sans-serif;
  --font-body: 'Onest', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --wrap: 1160px;
}

/* Chinese pages: system CJK stacks, no webfont payload */
:lang(zh) {
  --font-display: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
  --font-body: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
}
:lang(zh) .display, :lang(zh) h1, :lang(zh) h2, :lang(zh) h3 { letter-spacing: 0.01em; font-weight: 700; }

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: var(--sky); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.14;
  letter-spacing: -0.01em;
  text-wrap: balance;
}
h1 { font-size: clamp(2.1rem, 5.2vw, 3.9rem); }
h2 { font-size: clamp(1.55rem, 3.4vw, 2.5rem); }
h3 { font-size: clamp(1.05rem, 1.8vw, 1.3rem); line-height: 1.3; }

p { max-width: 68ch; }

.wrap { width: min(var(--wrap), calc(100% - 2.5rem)); margin-inline: auto; }

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

/* ------------------------------------------------------------
   Skip link & focus
   ------------------------------------------------------------ */
.skip {
  position: absolute; left: -999px; top: 0; z-index: 100;
  background: var(--brand); color: #fff; padding: .6rem 1rem; border-radius: 0 0 8px 0;
}
.skip:focus { left: 0; }
:focus-visible { outline: 2px solid var(--sky); outline-offset: 3px; border-radius: 4px; }

/* ------------------------------------------------------------
   Header
   ------------------------------------------------------------ */
.site-head {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklab, var(--bg-deep) 86%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.site-head .wrap {
  display: flex; align-items: center; gap: 1.5rem;
  padding-block: .8rem;
}
.brand-mark { display: flex; align-items: center; gap: .65rem; color: var(--text); font-family: var(--font-display); font-weight: 600; font-size: 1.02rem; letter-spacing: .01em; }
.brand-mark:hover { text-decoration: none; }
.brand-mark img { width: 34px; height: 34px; }
.brand-mark .ai { color: var(--sky); }

.main-nav { display: flex; gap: 1.4rem; margin-left: auto; }
.main-nav a { color: var(--text-soft); font-size: .95rem; font-weight: 500; }
.main-nav a:hover { color: var(--text); text-decoration: none; }

.lang-nav { position: relative; }
.lang-nav > button {
  display: flex; align-items: center; gap: .4rem;
  background: var(--bg-raised); color: var(--text-soft);
  border: 1px solid var(--line-strong); border-radius: 99px;
  font: inherit; font-size: .85rem; font-weight: 600; letter-spacing: .04em;
  padding: .42rem .85rem; cursor: pointer;
}
.lang-nav > button:hover { color: var(--text); border-color: var(--sky); }
.lang-menu {
  position: absolute; right: 0; top: calc(100% + .5rem);
  display: none; min-width: 11rem;
  background: var(--bg-panel); border: 1px solid var(--line-strong);
  border-radius: var(--radius); padding: .4rem;
  box-shadow: 0 18px 50px -12px oklch(0% 0 0 / .55);
}
.lang-nav.open .lang-menu { display: block; }
.lang-menu a {
  display: flex; justify-content: space-between; align-items: baseline; gap: 1rem;
  color: var(--text-soft); padding: .5rem .7rem; border-radius: 8px; font-size: .93rem;
}
.lang-menu a:hover { background: var(--bg-raised); color: var(--text); text-decoration: none; }
.lang-menu a[aria-current] { color: var(--sky); }
.lang-menu .code { font-size: .75rem; color: var(--faint); letter-spacing: .08em; }

.head-cta { display: none; }
@media (min-width: 900px) {
  .head-cta {
    display: inline-block; background: var(--brand); color: #fff;
    font-weight: 600; font-size: .92rem; padding: .5rem 1.1rem; border-radius: 99px;
  }
  .head-cta:hover { background: var(--brand-strong); text-decoration: none; }
}
@media (max-width: 820px) { .main-nav { display: none; } }

/* ------------------------------------------------------------
   Hero
   ------------------------------------------------------------ */
.hero { position: relative; padding: clamp(4rem, 9vw, 7.5rem) 0 clamp(3rem, 6vw, 5rem); overflow: hidden; }
.hero::before {
  content: ''; position: absolute; inset: -20% -10% auto;
  height: 130%; pointer-events: none;
  background:
    radial-gradient(46% 60% at 78% 22%, oklch(50% 0.22 262 / .28), transparent 68%),
    radial-gradient(30% 42% at 12% 80%, oklch(78% 0.13 230 / .10), transparent 70%);
}
.hero .wrap { position: relative; display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(2rem, 5vw, 4.5rem); align-items: center; }
@media (max-width: 900px) { .hero .wrap { grid-template-columns: 1fr; } }

.hero-kicker {
  display: inline-flex; align-items: center; gap: .55rem;
  color: var(--sky); font-weight: 600; font-size: .82rem;
  letter-spacing: .14em; text-transform: uppercase;
  margin-bottom: 1.3rem;
}
.hero-kicker::before { content: ''; width: 26px; height: 2px; background: var(--sky); border-radius: 2px; }

.hero h1 { margin-bottom: 1.4rem; }
.hero h1 em { font-style: normal; color: var(--sky); }
.hero-sub { color: var(--text-soft); font-size: clamp(1.05rem, 1.6vw, 1.2rem); margin-bottom: 2.1rem; }

.cta-row { display: flex; flex-wrap: wrap; gap: .9rem; align-items: center; }
.btn {
  display: inline-flex; align-items: center; gap: .55rem;
  font-weight: 650; font-size: 1rem; padding: .85rem 1.6rem;
  border-radius: 99px; border: 1px solid transparent;
  transition: transform .25s var(--ease-out), background .2s, border-color .2s;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn-primary { background: var(--brand); color: #fff; box-shadow: 0 12px 34px -10px oklch(58% 0.21 262 / .6); }
.btn-primary:hover { background: var(--brand-strong); }
.btn-ghost { color: var(--text); border-color: var(--line-strong); }
.btn-ghost:hover { border-color: var(--sky); color: var(--sky); }

.hero-proof { margin-top: 2.6rem; padding-top: 1.6rem; border-top: 1px solid var(--line); color: var(--muted); font-size: .92rem; max-width: 56ch; }
.hero-proof strong { color: var(--text-soft); font-weight: 600; }

.hero-visual { position: relative; }
.hero-visual svg { width: 100%; height: auto; filter: drop-shadow(0 30px 60px oklch(0% 0 0 / .45)); }

/* ------------------------------------------------------------
   Section scaffolding
   ------------------------------------------------------------ */
section { padding-block: clamp(3.4rem, 7.5vw, 6.5rem); }
.sec-head { max-width: 46rem; margin-bottom: clamp(2.2rem, 5vw, 3.6rem); }
.sec-head h2 { margin-bottom: .9rem; }
.sec-head p { color: var(--text-soft); font-size: 1.08rem; }

/* ------------------------------------------------------------
   Services: alternating feature rows
   ------------------------------------------------------------ */
.svc { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: clamp(1.6rem, 4.5vw, 4rem); align-items: center; padding-block: clamp(1.8rem, 4vw, 3rem); }
.svc + .svc { border-top: 1px solid var(--line); }
.svc:nth-child(even) .svc-visual { order: -1; }
@media (max-width: 860px) {
  .svc { grid-template-columns: 1fr; }
  .svc:nth-child(even) .svc-visual { order: 0; }
}
.svc-num { font-family: var(--font-display); font-size: .8rem; font-weight: 600; color: var(--faint); letter-spacing: .1em; margin-bottom: .8rem; }
.svc h3 { font-size: clamp(1.25rem, 2.4vw, 1.7rem); margin-bottom: .8rem; }
.svc p { color: var(--text-soft); margin-bottom: 1rem; }
.svc ul { list-style: none; padding: 0; display: grid; gap: .45rem; color: var(--muted); font-size: .97rem; }
.svc li { display: flex; gap: .6rem; align-items: baseline; }
.svc li::before { content: '·'; color: var(--sky); font-weight: 900; }
.svc-visual svg { width: 100%; height: auto; border-radius: var(--radius-lg); }
.svc-link { font-weight: 600; }

/* ------------------------------------------------------------
   Spotlight: voice agent, drenched panel
   ------------------------------------------------------------ */
.spotlight { background: linear-gradient(160deg, oklch(30% 0.115 262) 0%, oklch(21% 0.075 260) 55%, var(--bg-deep) 100%); border-block: 1px solid var(--line); }
.spot-grid { display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 5fr); gap: clamp(2rem, 5vw, 4rem); align-items: center; }
@media (max-width: 900px) { .spot-grid { grid-template-columns: 1fr; } }
.spotlight h2 { margin-bottom: 1rem; }
.spotlight .lead { color: var(--text-soft); font-size: 1.12rem; margin-bottom: 1.8rem; }
.spot-facts { list-style: none; padding: 0; display: grid; gap: .9rem; margin-bottom: 2.2rem; }
.spot-facts li { display: flex; gap: .85rem; align-items: flex-start; color: var(--text-soft); }
.spot-facts svg { flex: none; width: 22px; height: 22px; margin-top: .15rem; color: var(--sky); }
.spot-facts strong { color: var(--text); }
.spot-langs { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 2.2rem; }
.spot-langs span {
  font-size: .82rem; font-weight: 600; letter-spacing: .06em;
  color: var(--text-soft); border: 1px solid var(--line-strong);
  padding: .32rem .75rem; border-radius: 99px; background: oklch(100% 0 0 / .04);
}

/* ------------------------------------------------------------
   Product band (Wischapp)
   ------------------------------------------------------------ */
.product-band { border-top: 1px solid var(--line); }
.prod-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: clamp(2rem, 5vw, 4rem); align-items: center; }
@media (max-width: 900px) { .prod-grid { grid-template-columns: 1fr; } }
.prod-tag { display: inline-block; font-size: .8rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--bg-deep); background: var(--sky); border-radius: 6px; padding: .28rem .6rem; margin-bottom: 1.1rem; }
.prod-grid h2 { margin-bottom: 1rem; }
.prod-grid .lead { color: var(--text-soft); margin-bottom: 1.4rem; }
.prod-points { list-style: none; padding: 0; display: grid; gap: .55rem; color: var(--muted); margin-bottom: 1.8rem; }
.prod-points li { display: flex; gap: .6rem; align-items: baseline; }
.prod-points li::before { content: '·'; color: var(--sky); font-weight: 900; }
.prod-offer { border: 1px solid var(--line-strong); border-radius: var(--radius); background: var(--bg-raised); padding: 1.15rem 1.3rem; color: var(--text-soft); font-size: .97rem; max-width: 46rem; }
.prod-offer strong { color: var(--text); }

/* ------------------------------------------------------------
   Process
   ------------------------------------------------------------ */
.process ol { list-style: none; padding: 0; counter-reset: step; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.6rem; }
@media (max-width: 860px) { .process ol { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .process ol { grid-template-columns: 1fr; } }
.process li { counter-increment: step; position: relative; padding-top: 1.1rem; }
.process li::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-display); font-weight: 600; font-size: 2rem;
  color: oklch(58% 0.21 262 / .55);
  display: block; margin-bottom: .6rem;
}
.process li::after { content: ''; position: absolute; top: 0; left: 0; width: 2.4rem; height: 2px; background: var(--brand); }
.process h3 { font-size: 1.06rem; margin-bottom: .45rem; }
.process p { color: var(--muted); font-size: .95rem; }

/* ------------------------------------------------------------
   About / group
   ------------------------------------------------------------ */
.about { background: var(--bg-deep); border-block: 1px solid var(--line); }
.about-grid { display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 5fr); gap: clamp(2rem, 5vw, 4.5rem); }
@media (max-width: 900px) { .about-grid { grid-template-columns: 1fr; } }
.about h2 { margin-bottom: 1.1rem; }
.about .story { color: var(--text-soft); display: grid; gap: 1rem; font-size: 1.05rem; }
.about .story strong { color: var(--text); }
.group-list { list-style: none; padding: 0; display: grid; gap: 0; border-top: 1px solid var(--line); margin-top: .4rem; }
.group-list li { display: grid; grid-template-columns: 5.4rem 1fr; gap: 1.1rem; padding: 1.05rem 0; border-bottom: 1px solid var(--line); align-items: baseline; }
.group-list .year { font-family: var(--font-display); font-size: .92rem; font-weight: 600; color: var(--sky); }
.group-list .who { color: var(--text); font-weight: 600; }
.group-list .what { color: var(--muted); font-size: .93rem; }

/* ------------------------------------------------------------
   Contact
   ------------------------------------------------------------ */
.contact-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: clamp(2rem, 5vw, 4.5rem); }
@media (max-width: 900px) { .contact-grid { grid-template-columns: 1fr; } }
.contact h2 { margin-bottom: 1rem; }
.contact .lead { color: var(--text-soft); margin-bottom: 1.8rem; }
.contact-direct { display: grid; gap: 1.1rem; }
.contact-direct .row { display: grid; gap: .15rem; }
.contact-direct .label { font-size: .78rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--faint); }
.contact-direct a, .contact-direct .val { color: var(--text); font-size: 1.12rem; font-weight: 600; }

form.contact-form { display: grid; gap: 1.1rem; background: var(--bg-raised); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: clamp(1.4rem, 3vw, 2.2rem); }
.field { display: grid; gap: .4rem; }
.field label { font-size: .88rem; font-weight: 600; color: var(--text-soft); }
.field input, .field textarea {
  font: inherit; color: var(--text);
  background: var(--bg); border: 1px solid var(--line-strong); border-radius: 10px;
  padding: .75rem .95rem; width: 100%;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--sky); box-shadow: 0 0 0 3px var(--sky-soft); }
.field textarea { resize: vertical; min-height: 7.5rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
@media (max-width: 560px) { .form-row { grid-template-columns: 1fr; } }
.hp { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; overflow: hidden; }
.form-note { color: var(--faint); font-size: .85rem; }
.form-note a { color: var(--muted); }
.form-status { display: none; border-radius: 10px; padding: .9rem 1.1rem; font-weight: 600; }
.form-status.ok { display: block; background: oklch(75% 0.15 160 / .12); color: var(--ok); border: 1px solid oklch(75% 0.15 160 / .35); }
.form-status.err { display: block; background: oklch(62% 0.24 27 / .12); color: oklch(78% 0.14 27); border: 1px solid oklch(62% 0.24 27 / .35); }

/* ------------------------------------------------------------
   Footer
   ------------------------------------------------------------ */
.site-foot { background: var(--bg-deep); border-top: 1px solid var(--line); padding: clamp(2.5rem, 5vw, 4rem) 0 2rem; color: var(--muted); font-size: .95rem; }
.foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 2.2rem; margin-bottom: 2.6rem; }
@media (max-width: 760px) { .foot-grid { grid-template-columns: 1fr; } }
.foot-brand { display: flex; align-items: center; gap: .6rem; color: var(--text); font-family: var(--font-display); font-weight: 600; margin-bottom: .9rem; }
.foot-brand img { width: 28px; height: 28px; }
.site-foot .foot-h { color: var(--text-soft); font-size: .82rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; margin-bottom: .9rem; }
.site-foot ul { list-style: none; padding: 0; display: grid; gap: .45rem; }
.site-foot a { color: var(--muted); }
.site-foot a:hover { color: var(--text); }
.foot-bottom { border-top: 1px solid var(--line); padding-top: 1.4rem; display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; color: var(--muted); font-size: .87rem; }
.foot-langs { display: flex; flex-wrap: wrap; gap: .8rem; }
.foot-langs a { color: var(--muted); }
.foot-langs a[aria-current] { color: var(--sky); }

/* ------------------------------------------------------------
   Legal pages
   ------------------------------------------------------------ */
.legal { padding-block: clamp(3rem, 6vw, 5rem); }
.legal .wrap { max-width: 760px; }
.legal h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); margin-bottom: 2rem; }
.legal h2 { font-size: 1.25rem; margin: 2.2rem 0 .8rem; }
.legal p, .legal li { color: var(--text-soft); }
.legal ul { padding-left: 1.2rem; }

/* ------------------------------------------------------------
   Reveal motion
   ------------------------------------------------------------ */
@media (prefers-reduced-motion: no-preference) {
  /* hidden state only once app.js has tagged <html class="js"> - content is
     never invisible without JavaScript */
  .js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s var(--ease-out), transform .7s var(--ease-out); }
  .js .reveal.in { opacity: 1; transform: none; }
}

/* voice waveform idle animation */
@media (prefers-reduced-motion: no-preference) {
  .wavebar { animation: wave 1.6s ease-in-out infinite; transform-origin: center; }
  @keyframes wave { 0%, 100% { transform: scaleY(.35); } 50% { transform: scaleY(1); } }
}

/* ------------------------------------------------------------
   Technical garnish
   ------------------------------------------------------------ */
.scroll-progress {
  position: fixed; top: 0; left: 0; right: 0; height: 2px; z-index: 90;
  background: linear-gradient(90deg, #1d4ed8, #38bdf8);
  transform-origin: 0 50%; transform: scaleX(0);
  pointer-events: none;
}

.hero-glow {
  position: absolute; top: 0; left: 0; width: 520px; height: 520px;
  border-radius: 50%; pointer-events: none; z-index: 0;
  background: radial-gradient(circle, oklch(58% .21 262 / .16), transparent 65%);
  will-change: transform;
}
.hero .wrap { z-index: 1; }

.typer-line {
  display: flex; align-items: center; gap: .6rem;
  margin-top: 1.1rem; padding: .7rem 1rem;
  background: var(--bg-raised); border: 1px solid var(--line-strong);
  border-radius: 99px; min-height: 2.9rem;
  font-size: .92rem; color: var(--text-soft);
  overflow: hidden; white-space: nowrap;
}
.typer-dot { flex: none; width: 9px; height: 9px; border-radius: 50%; background: #4ade80; }
@media (prefers-reduced-motion: no-preference) {
  .typer-dot { animation: pulse 1.8s ease-in-out infinite; }
  @keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .35; } }
  .typer-caret { flex: none; width: 2px; height: 1.05em; background: var(--sky); animation: blink 1.1s steps(1) infinite; }
  @keyframes blink { 50% { opacity: 0; } }
}
.typer-text { overflow: hidden; text-overflow: ellipsis; }

/* Proof cases: editorial 12-col grid, first case leads double-wide */
.case-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 1.4rem; }
.case {
  grid-column: span 4;
  border-top: 2px solid var(--brand);
  padding: 1.3rem 1.4rem 1.5rem;
  background: linear-gradient(180deg, oklch(100% 0 0 / .035), transparent 60%);
  border-radius: 0 0 var(--radius) var(--radius);
}
.case:first-child { grid-column: span 8; border-top-color: var(--sky); }
.case:first-child h3 { font-size: clamp(1.2rem, 2.2vw, 1.5rem); }
@media (max-width: 980px) { .case, .case:first-child { grid-column: span 6; } }
@media (max-width: 640px) { .case, .case:first-child { grid-column: span 12; } }
.case-k { font-size: .76rem; font-weight: 700; letter-spacing: .13em; text-transform: uppercase; color: var(--sky); margin-bottom: .7rem; }
.case h3 { margin-bottom: .55rem; }
.case p:last-child { color: var(--muted); font-size: .97rem; }

/* Below-the-fold rendering economy */
#praxis, .process, .about, .contact { content-visibility: auto; contain-intrinsic-size: auto 640px; }
.site-foot { content-visibility: auto; contain-intrinsic-size: auto 420px; }

/* Cross-document view transitions (language switch) */
@view-transition { navigation: auto; }
@media (prefers-reduced-motion: no-preference) {
  ::view-transition-old(root) { animation: vt-out .18s ease-out both; }
  ::view-transition-new(root) { animation: vt-in .26s ease-out both; }
  @keyframes vt-out { to { opacity: 0; } }
  @keyframes vt-in { from { opacity: 0; transform: translateY(6px); } }
}