/* ==========================================================================
   OSmeister — "control plane" design system
   Dark slate · constructivist grid · monospace technical voice
   ========================================================================== */

:root {
  --ink: #0b0e13;
  --ink-2: #0e131b;
  --panel: #12161f;
  --panel-2: #181e2a;
  --line: rgba(232, 235, 242, 0.10);
  --line-strong: rgba(232, 235, 242, 0.22);
  --text: #e8ebf2;
  --muted: #94a1b6;
  --faint: #5e6b80;
  --ember: #ff5a1f;
  --ember-soft: rgba(255, 90, 31, 0.14);
  --signal: #2bd9b0;

  --font-display: "Unbounded", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  --shell: 1200px;
  --gap: clamp(1rem, 2vw, 1.75rem);
  --radius: 14px;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background-color: var(--ink);
  background-image:
    linear-gradient(115deg, transparent 0 49.6%, var(--line) 49.6% 50.4%, transparent 50.4%),
    radial-gradient(140% 90% at 85% -10%, rgba(255, 90, 31, 0.10), transparent 55%);
  background-size: 56px 100%, 100% 100%;
  background-attachment: fixed;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; line-height: 1.05; margin: 0; letter-spacing: -0.02em; }
p { margin: 0 0 1rem; }
a { color: inherit; text-decoration: none; }

img { max-width: 100%; display: block; }

.mono { font-family: var(--font-mono); }

/* --- Layout --------------------------------------------------------------- */
.shell { width: min(var(--shell), 100% - 2.5rem); margin-inline: auto; }

.section { padding-block: clamp(3.5rem, 8vw, 7rem); border-top: 1px solid var(--line); }
.section--flush { border-top: 0; }

.section-head { max-width: 64ch; margin-bottom: clamp(2rem, 5vw, 3.5rem); }
.section-head h2 { font-size: clamp(1.9rem, 4vw, 3rem); margin-bottom: 1rem; }
.section-head p { color: var(--muted); font-size: 1.05rem; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--font-mono); font-size: 0.72rem; font-weight: 500;
  letter-spacing: 0.28em; text-transform: uppercase; color: var(--ember);
  margin-bottom: 1.2rem;
}
.eyebrow::before { content: ""; width: 1.6rem; height: 1px; background: var(--ember); }

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 100;
  background: var(--ember); color: #fff; padding: 0.6rem 1rem;
}
.skip-link:focus { left: 1rem; top: 1rem; }

:focus-visible { outline: 2px solid var(--ember); outline-offset: 3px; }

/* --- Buttons -------------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.55rem;
  font-family: var(--font-mono); font-size: 0.85rem; font-weight: 500;
  letter-spacing: 0.04em; padding: 0.85rem 1.4rem; border-radius: 999px;
  border: 1px solid var(--line-strong); color: var(--text);
  background: transparent; cursor: pointer; transition: all 0.18s ease;
}
.btn:hover { border-color: var(--text); transform: translateY(-1px); }
.btn--primary { background: var(--ember); border-color: var(--ember); color: #120a06; font-weight: 700; }
.btn--primary:hover { box-shadow: 0 10px 30px -10px var(--ember); }
.btn-row { display: flex; flex-wrap: wrap; gap: 0.8rem; }

/* --- Header / nav --------------------------------------------------------- */
.site-header { position: sticky; top: 0; z-index: 40; backdrop-filter: blur(12px);
  background: color-mix(in srgb, var(--ink) 82%, transparent); border-bottom: 1px solid var(--line); }
.site-header__inner { display: flex; align-items: center; gap: 1.5rem; height: 72px; }

.brand { display: inline-flex; align-items: center; gap: 0.6rem; font-family: var(--font-display);
  font-weight: 800; letter-spacing: 0.02em; }
.brand__mark { color: var(--ember); font-size: 1.2rem; }
.brand__name { font-size: 1.15rem; }

.site-nav { display: flex; gap: 1.6rem; margin-left: auto; }
.site-nav__link { font-size: 0.92rem; color: var(--muted); transition: color 0.15s; position: relative; }
.site-nav__link:hover, .site-nav__link.is-active { color: var(--text); }
.site-nav__link.is-active::after { content: ""; position: absolute; left: 0; bottom: -6px;
  width: 100%; height: 2px; background: var(--ember); }

.lang-switch { display: flex; gap: 0.2rem; border: 1px solid var(--line); border-radius: 999px; padding: 0.2rem; }
.lang-switch__opt { font-family: var(--font-mono); font-size: 0.72rem; text-transform: uppercase;
  padding: 0.3rem 0.55rem; border-radius: 999px; color: var(--faint); }
.lang-switch__opt.is-current { background: var(--panel-2); color: var(--text); }

.nav-burger { display: none; flex-direction: column; gap: 5px; cursor: pointer; margin-left: auto; }
.nav-burger span { width: 24px; height: 2px; background: var(--text); }

/* --- Hero (shell session) ------------------------------------------------- */
.hero { padding-block: clamp(3.5rem, 9vw, 8rem); position: relative; }
.hero__grid { display: grid; grid-template-columns: 1.32fr 0.68fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.hero__grid > * { min-width: 0; }
.hero h1 { font-size: clamp(2.2rem, 5.2vw, 3.7rem); font-weight: 800; letter-spacing: -0.03em; text-wrap: balance; }
.hero h1 em { font-style: normal; color: var(--ember); }
.hero__lead { color: var(--muted); font-size: 1.15rem; max-width: 46ch; margin: 1.6rem 0 2.2rem; }
.hero__stats { display: flex; gap: 2.4rem; margin-top: 3rem; flex-wrap: wrap; }
.hero__stat b { font-family: var(--font-display); font-size: 1.8rem; display: block; }
.hero__stat span { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--faint); }

.terminal { background: var(--panel); border: 1px solid var(--line-strong); border-radius: var(--radius);
  overflow: hidden; box-shadow: 0 40px 80px -40px rgba(0,0,0,0.8); }
.terminal__bar { display: flex; align-items: center; gap: 0.5rem; padding: 0.8rem 1rem;
  border-bottom: 1px solid var(--line); background: var(--panel-2); }
.terminal__dot { width: 11px; height: 11px; border-radius: 50%; background: var(--faint); }
.terminal__dot:first-child { background: var(--ember); }
.terminal__title { margin-left: auto; font-family: var(--font-mono); font-size: 0.72rem; color: var(--faint); }
.terminal__body { padding: 1.3rem 1.4rem; font-family: var(--font-mono); font-size: 0.82rem;
  line-height: 1.8; height: 300px; overflow: hidden; }
.terminal__line { white-space: pre-wrap; word-break: break-word; }
.terminal__prompt { color: var(--signal); }
.terminal__cmd { color: var(--text); }
.terminal__out { color: var(--muted); }
.terminal__cursor { display: inline-block; width: 9px; height: 1.05em; background: var(--ember);
  vertical-align: text-bottom; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* --- Generic card grid ---------------------------------------------------- */
.grid { display: grid; gap: var(--gap); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }

.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.6rem; transition: border-color 0.18s, transform 0.18s; display: flex; flex-direction: column; }
.card:hover { border-color: var(--line-strong); transform: translateY(-3px); }
.card__index { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.1em; color: var(--ember); }
.card__title { font-size: 1.25rem; margin: 0.7rem 0 0.5rem; }
.card__text { color: var(--muted); font-size: 0.95rem; flex: 1; }
.card__more { font-family: var(--font-mono); font-size: 0.78rem; color: var(--text); margin-top: 1.2rem;
  letter-spacing: 0.05em; }
.card__more::after { content: " →"; color: var(--ember); }

.cat-block { margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.cat-block__head { display: flex; align-items: baseline; gap: 1rem; margin-bottom: 1.5rem;
  padding-bottom: 0.8rem; border-bottom: 1px solid var(--line); }
.cat-block__glyph { font-family: var(--font-mono); color: var(--ember); font-size: 0.8rem; }
.cat-block__name { font-size: 1.4rem; }
.cat-block__summary { color: var(--muted); font-size: 0.95rem; margin-left: auto; max-width: 40ch; text-align: right; }

/* --- Detail pages --------------------------------------------------------- */
.lede { max-width: 70ch; }
.page-hero { padding-block: clamp(3rem, 7vw, 6rem) clamp(2rem, 4vw, 3rem); }
.page-hero h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); margin: 1rem 0; }
.page-hero p { color: var(--muted); font-size: 1.15rem; max-width: 60ch; }

.prose { max-width: 70ch; }
.prose p { color: #cdd4e0; }
.split { display: grid; grid-template-columns: 1.6fr 1fr; gap: clamp(2rem, 5vw, 4rem); align-items: start; }

.feature-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.8rem; }
.feature-list li { padding-left: 1.6rem; position: relative; color: #cdd4e0; }
.feature-list li::before { content: "▸"; position: absolute; left: 0; color: var(--ember); }

.aside-box { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.6rem; }
.aside-box h3 { font-size: 1rem; margin-bottom: 1rem; }
.aside-box dl { margin: 0; display: grid; gap: 0.6rem; }
.aside-box dt { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--faint); }
.aside-box dd { margin: 0 0 0.6rem; }

/* --- Pricing -------------------------------------------------------------- */
.plan { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.8rem; }
.plan.is-featured { border-color: var(--ember); background: linear-gradient(180deg, var(--ember-soft), transparent 40%), var(--panel); }
.plan__name { font-size: 1.3rem; }
.plan__price { font-family: var(--font-display); font-size: 2.3rem; margin: 1rem 0 0.2rem; }
.plan__period { font-family: var(--font-mono); font-size: 0.75rem; color: var(--faint); }
.plan__blurb { color: var(--muted); font-size: 0.92rem; margin: 0.8rem 0 1.2rem; }

/* --- Forms / contact ------------------------------------------------------ */
.field { display: grid; gap: 0.4rem; margin-bottom: 1.1rem; }
.field label { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--muted); }
input, textarea, select { font-family: var(--font-body); font-size: 1rem; color: var(--text);
  background: var(--ink-2); border: 1px solid var(--line-strong); border-radius: 10px; padding: 0.75rem 0.9rem; width: 100%; }
input:focus, textarea:focus { border-color: var(--ember); outline: none; }
.errorlist { list-style: none; padding: 0; margin: 0.2rem 0 0; color: var(--ember); font-size: 0.82rem; }

.flashes { width: min(var(--shell), 100% - 2.5rem); margin: 1rem auto 0; }
.flash { padding: 0.9rem 1.1rem; border-radius: 10px; border: 1px solid var(--line-strong); background: var(--panel); }
.flash--success { border-color: var(--signal); }

/* --- Blog ----------------------------------------------------------------- */
.post-card__meta { font-family: var(--font-mono); font-size: 0.72rem; color: var(--faint);
  letter-spacing: 0.08em; text-transform: uppercase; }
.post-cover { border-radius: var(--radius); border: 1px solid var(--line); aspect-ratio: 16/9; object-fit: cover; width: 100%; margin-bottom: 1rem; }
.article { max-width: 72ch; margin-inline: auto; }
.article h1 { font-size: clamp(2rem, 4.5vw, 3.2rem); margin-bottom: 1rem; }
.article p { color: #cdd4e0; font-size: 1.08rem; }

/* --- Footer --------------------------------------------------------------- */
.site-footer { border-top: 1px solid var(--line); margin-top: 2rem; padding-block: clamp(2.5rem, 5vw, 4rem) 2rem; }
.site-footer__grid { display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 2rem; }
.site-footer__tagline { color: var(--muted); font-size: 0.92rem; max-width: 34ch; margin-top: 1rem; }
.site-footer__head { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--faint); margin-bottom: 1rem; }
.site-footer__col a { display: block; color: var(--muted); padding: 0.25rem 0; font-size: 0.95rem; }
.site-footer__col a:hover { color: var(--text); }
.site-footer__legal { display: flex; justify-content: space-between; gap: 1rem; margin-top: 2.5rem;
  padding-top: 1.5rem; border-top: 1px solid var(--line); color: var(--faint); font-size: 0.82rem; flex-wrap: wrap; }

/* --- Chat widget ---------------------------------------------------------- */
.chat-widget { position: fixed; right: clamp(1rem, 3vw, 2rem); bottom: clamp(1rem, 3vw, 2rem); z-index: 60; }
.chat-widget__bubble { display: inline-flex; align-items: center; gap: 0.6rem; padding: 0.8rem 1.2rem;
  border-radius: 999px; border: none; background: var(--ember); color: #120a06; font-weight: 700;
  font-family: var(--font-mono); font-size: 0.85rem; cursor: pointer; box-shadow: 0 16px 40px -12px var(--ember); }
.chat-widget__bubble-icon { font-size: 1.1rem; }

.chat-panel { position: absolute; right: 0; bottom: 64px; width: min(370px, 86vw); height: 520px; max-height: 72vh;
  display: flex; flex-direction: column; background: var(--panel); border: 1px solid var(--line-strong);
  border-radius: 16px; overflow: hidden; box-shadow: 0 40px 90px -30px rgba(0,0,0,0.85); }
.chat-panel[hidden] { display: none; }
.chat-panel__head { display: flex; align-items: center; gap: 0.6rem; padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--line); background: var(--panel-2); }
.chat-panel__title { font-family: var(--font-display); font-weight: 600; font-size: 0.95rem; }
.chat-panel__status { font-size: 0.68rem; color: var(--signal); }
.chat-panel__status::before { content: "● "; }
.chat-panel__close { margin-left: auto; background: none; border: none; color: var(--muted); cursor: pointer; font-size: 0.9rem; }
.chat-panel__log { flex: 1; overflow-y: auto; padding: 1rem; display: flex; flex-direction: column; gap: 0.7rem; }
.chat-msg { max-width: 82%; padding: 0.65rem 0.85rem; border-radius: 12px; font-size: 0.9rem; line-height: 1.5; }
.chat-msg--bot { background: var(--panel-2); border: 1px solid var(--line); align-self: flex-start; border-bottom-left-radius: 4px; }
.chat-msg--user { background: var(--ember); color: #120a06; align-self: flex-end; border-bottom-right-radius: 4px; }
.chat-msg--typing { color: var(--muted); font-family: var(--font-mono); }
.chat-panel__form { display: flex; gap: 0.5rem; padding: 0.8rem; border-top: 1px solid var(--line); }
.chat-panel__form input { flex: 1; }
.chat-panel__form button { background: var(--ember); color: #120a06; border: none; border-radius: 10px;
  width: 44px; font-size: 1.1rem; cursor: pointer; flex: none; }

/* --- Responsive ----------------------------------------------------------- */
@media (max-width: 900px) {
  .hero__grid, .split { grid-template-columns: 1fr; }
  .grid--3, .grid--2 { grid-template-columns: 1fr; }
  .site-footer__grid { grid-template-columns: 1fr 1fr; }
  .cat-block__summary { display: none; }

  .nav-burger { display: flex; }
  .lang-switch { order: 3; }
  .site-nav { position: fixed; inset: 72px 0 auto 0; flex-direction: column; gap: 0;
    background: var(--ink-2); border-bottom: 1px solid var(--line); padding: 0.5rem 1.25rem;
    margin: 0; transform: translateY(-120%); transition: transform 0.25s ease; }
  .site-nav__link { padding: 0.9rem 0; border-bottom: 1px solid var(--line); }
  .nav-toggle:checked ~ .site-nav { transform: translateY(0); }
}

@media (max-width: 560px) {
  .site-footer__grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .terminal__cursor { animation: none; }
  * { transition: none !important; }
}

/* --- Phone reveal ----------------------------------------------------------- */
.phone-reveal { display: inline-flex; align-items: center; gap: 0.45rem;
  font-family: var(--font-mono); font-size: 0.8rem; letter-spacing: 0.04em;
  padding: 0.45rem 0.9rem; margin-top: 0.25rem; border-radius: 999px;
  border: 1px solid var(--line-strong); color: var(--muted);
  background: transparent; cursor: pointer; transition: all 0.18s ease; }
.phone-reveal::before { content: "☎"; color: var(--ember); }
.phone-reveal:hover { border-color: var(--ember); color: var(--text); }