/* Kubinu site: tokens, base, chrome, buttons, forms.
   Light is the default; dark comes from data-theme (set before paint by theme-init.js). */

@font-face { font-family: "Gabarito"; src: url("../vendor/fonts/gabarito-wght.61a712c463a9.woff2") format("woff2"); font-weight: 400 900; font-display: swap; }
@font-face { font-family: "IBM Plex Sans"; src: url("../vendor/fonts/plex-sans-400.77bc02670657.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "IBM Plex Sans"; src: url("../vendor/fonts/plex-sans-500.f7016cd446d2.woff2") format("woff2"); font-weight: 500; font-display: swap; }
@font-face { font-family: "IBM Plex Sans"; src: url("../vendor/fonts/plex-sans-600.196e3cbc5fee.woff2") format("woff2"); font-weight: 600; font-display: swap; }
@font-face { font-family: "IBM Plex Sans"; src: url("../vendor/fonts/plex-sans-ext-400.1bc0d8e41d21.woff2") format("woff2"); font-weight: 400; font-display: swap; unicode-range: U+0100-024F, U+0259, U+1E00-1EFF, U+20A0-20C0; }
@font-face { font-family: "IBM Plex Sans"; src: url("../vendor/fonts/plex-sans-ext-500.93a0df997e00.woff2") format("woff2"); font-weight: 500; font-display: swap; unicode-range: U+0100-024F, U+0259, U+1E00-1EFF, U+20A0-20C0; }
@font-face { font-family: "IBM Plex Sans"; src: url("../vendor/fonts/plex-sans-ext-600.8fccbdf5bf67.woff2") format("woff2"); font-weight: 600; font-display: swap; unicode-range: U+0100-024F, U+0259, U+1E00-1EFF, U+20A0-20C0; }
@font-face { font-family: "IBM Plex Mono"; src: url("../vendor/fonts/plex-mono-400.79936b18df9f.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "IBM Plex Mono"; src: url("../vendor/fonts/plex-mono-500.b1c8a895f5fd.woff2") format("woff2"); font-weight: 500; font-display: swap; }

:root {
  /* brand */
  --paper: #EEEDE7; --carbon: #1E1E24; --laterite: #E2553B; --laterite-deep: #B33F27; --dry: #B9B3A3;
  /* semantic (light) */
  --bg: var(--paper);
  --surface: #F7F6F2;
  --surface-2: #E5E3DB;
  --fg: var(--carbon);
  --muted: #55545C;
  --border: #D3D0C6;
  --accent: var(--laterite);
  --accent-text: var(--laterite-deep);
  --on-accent: #1E1E24;
  --band-bg: var(--carbon);
  --band-fg: var(--paper);
  --band-muted: #B4B2AA;
  --band-border: #34343C;
  --tile-off: #DAD7CD;
  --tile-on: var(--carbon);
  --shadow: 0 1px 2px rgb(30 30 36 / .06), 0 12px 32px -12px rgb(30 30 36 / .18);
  --header-bg: rgb(238 237 231 / .78);
  --logo-ink: var(--fg);
  --logo-accent: var(--accent);
  --focus: var(--laterite);
  --success: #2F6B4F;
  --error: #B33F27;

  --font-display: "Gabarito", "Arial", sans-serif;
  --font-body: "IBM Plex Sans", "Arial", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "Consolas", monospace;
  --r: 6px;
  --wrap: 1240px;
  --gutter: clamp(16px, 4vw, 40px);
  color-scheme: light;
}
:root[data-theme="dark"] {
  --bg: #16161B;
  --surface: #1E1E24;
  --surface-2: #27272E;
  --fg: var(--paper);
  --muted: #B4B2AA;
  --border: #34343C;
  --accent: var(--laterite);
  --accent-text: #F08A73;
  --on-accent: #1E1E24;
  --band-bg: #0E0E12;
  --band-fg: var(--paper);
  --band-muted: #A9A79F;
  --band-border: #2A2A31;
  --tile-off: #2C2C33;
  --tile-on: #D9D6CC;
  --shadow: 0 1px 2px rgb(0 0 0 / .4), 0 16px 40px -14px rgb(0 0 0 / .7);
  --header-bg: rgb(22 22 27 / .78);
  --success: #7CC39C;
  --error: #F08A73;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 400 17px/1.6 var(--font-body); text-rendering: optimizeLegibility; overflow-x: hidden; }
img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; }
p { margin: 0 0 1em; }
h1, h2, h3 { margin: 0; text-wrap: balance; }
::selection { background: var(--accent); color: var(--on-accent); }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; border-radius: 3px; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 10px; border: 2px solid var(--bg); }

.wrap { max-width: var(--wrap); margin: 0 auto; padding-inline: var(--gutter); }
.mono { font-family: var(--font-mono); }
.small { font-size: .82rem; }
.muted { color: var(--muted); }
.accent-text { color: var(--accent-text); }
.select { user-select: all; }
.label { display: block; font: 500 .72rem/1.3 var(--font-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.eyebrow { font: 500 .78rem/1.4 var(--font-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--accent-text); margin-bottom: 18px; }
.h2 { font: 800 clamp(2rem, 4.4vw, 3.6rem)/1.02 var(--font-display); letter-spacing: -.025em; }
.h3 { font: 700 1.3rem/1.2 var(--font-display); letter-spacing: -.01em; margin-bottom: 10px; }
.lead { font-size: clamp(1.05rem, 1.5vw, 1.22rem); line-height: 1.6; color: var(--muted); max-width: 62ch; }
ul.plain { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
ul.plain a { text-decoration: none; }
ul.plain a:hover { color: var(--accent-text); }

.skip { position: absolute; left: -9999px; top: 8px; z-index: 100; background: var(--fg); color: var(--bg); padding: 8px 14px; border-radius: 4px; }
.skip:focus { left: 8px; }

/* scroll progress */
.progress { position: fixed; inset: env(safe-area-inset-top, 0px) 0 auto 0; height: 3px; z-index: 60; pointer-events: none; }
.progress span { display: block; height: 100%; width: 100%; background: var(--accent); transform-origin: 0 50%; transform: scaleX(var(--p, 0)); }

/* header */
.site-header { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 50; background: var(--header-bg); backdrop-filter: saturate(1.4) blur(14px); -webkit-backdrop-filter: saturate(1.4) blur(14px); border-bottom: 1px solid transparent; transition: border-color .3s, background .3s; }
.site-header.is-scrolled { border-bottom-color: var(--border); }
.header-inner { display: flex; align-items: center; gap: 28px; height: 72px; }
.brand { display: flex; flex: none; }
.logo-h { height: 30px; width: auto; }
.nav { display: flex; gap: 26px; margin-left: auto; }
.nav a { text-decoration: none; font-weight: 500; font-size: .95rem; position: relative; padding: 6px 0; }
.nav a::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform .25s; }
.nav a:hover::after, .nav a.is-active::after { transform: scaleX(1); }
.header-actions { display: flex; align-items: center; gap: 10px; }
.icon-btn { width: 40px; height: 40px; display: grid; place-items: center; border-radius: 50%; border: 1px solid var(--border); background: var(--surface); color: var(--fg); cursor: pointer; transition: transform .2s, border-color .2s; }
.icon-btn:hover { border-color: var(--fg); transform: rotate(-12deg); }
.icon-btn svg { width: 19px; height: 19px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.i-moon { display: none; }
:root[data-theme="dark"] .i-sun { display: none; }
:root[data-theme="dark"] .i-moon { display: block; }
.menu-btn { display: none; }

/* buttons */
.btn { --b: var(--fg); display: inline-flex; align-items: center; gap: 10px; padding: 14px 22px; border-radius: 999px; font: 600 1rem/1 var(--font-body); text-decoration: none; cursor: pointer; border: 1.5px solid var(--b); transition: transform .2s, background .2s, color .2s, box-shadow .2s; }
.btn span { transition: transform .2s; }
.btn:hover span { transform: translateX(4px); }
.btn-primary { background: var(--fg); color: var(--bg); }
.btn-primary:hover { background: var(--accent); border-color: var(--accent); color: var(--on-accent); box-shadow: 0 10px 24px -10px var(--accent); transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--fg); }
.btn-ghost:hover { background: var(--fg); color: var(--bg); }
.btn-light { background: var(--band-fg); color: var(--band-bg); border-color: var(--band-fg); }
.btn-light:hover { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.btn-sm { padding: 10px 16px; font-size: .9rem; }
.chip { font: 500 .88rem/1 var(--font-body); padding: 10px 14px; border-radius: 999px; border: 1px solid var(--border); background: var(--surface); color: var(--fg); cursor: pointer; transition: all .2s; }
.chip:hover { border-color: var(--fg); }
.chip.is-on { background: var(--fg); color: var(--bg); border-color: var(--fg); }

/* forms */
.contact-form { display: grid; gap: 16px; background: var(--surface); border: 1px solid var(--border); border-radius: calc(var(--r) * 2); padding: clamp(20px, 3vw, 34px); box-shadow: var(--shadow); }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: grid; gap: 6px; min-width: 0; }
.field label { font: 500 .78rem/1.2 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.field input, .field select, .field textarea { width: 100%; font: 400 1rem/1.4 var(--font-body); color: var(--fg); background: var(--bg); border: 1px solid var(--border); border-radius: var(--r); padding: 12px 14px; transition: border-color .2s, box-shadow .2s; }
.field textarea { resize: vertical; min-height: 130px; }
.field input::placeholder, .field textarea::placeholder { color: var(--muted); opacity: .8; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgb(226 85 59 / .22); }
.field select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%); background-position: calc(100% - 20px) 52%, calc(100% - 14px) 52%; background-size: 6px 6px; background-repeat: no-repeat; }
.field.has-error input, .field.has-error textarea { border-color: var(--error); }
.errorlist { list-style: none; margin: 0; padding: 0; color: var(--error); font-size: .85rem; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.flash { padding: 12px 14px; border-radius: var(--r); font-weight: 500; border: 1px solid; }
.flash-success { color: var(--success); border-color: currentColor; background: color-mix(in srgb, var(--success) 10%, transparent); }
.flash-error { color: var(--error); border-color: currentColor; background: color-mix(in srgb, var(--error) 10%, transparent); }

/* footer */
.site-footer { border-top: 1px solid var(--border); padding-block: 64px 28px; background: var(--surface); }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1.2fr 1.4fr 1.2fr 1fr; gap: 32px; align-items: start; }
.footer-brand .logo-h { height: 34px; }
.footer-tag { font: 700 1.4rem var(--font-display); margin: 18px 0 8px; }
.footer-coord { justify-self: end; text-align: right; }
.footer-base { display: flex; justify-content: space-between; gap: 16px; margin-top: 48px; padding-top: 20px; border-top: 1px solid var(--border); flex-wrap: wrap; }

/* reveal: content is visible at rest; motion only adds a lift when allowed */
.reveal { transition: opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1); }
.js-motion .reveal:not(.is-in) { opacity: 0; transform: translateY(18px); }

@media (max-width: 960px) {
  .nav { position: fixed; inset: 72px 0 auto 0; flex-direction: column; gap: 0; background: var(--bg); border-bottom: 1px solid var(--border); padding: 8px var(--gutter) 18px; transform: translateY(-120%); transition: transform .3s; z-index: -1; }
  .nav a { padding: 14px 0; border-bottom: 1px solid var(--border); font-size: 1.05rem; }
  .nav.is-open { transform: translateY(0); }
  .menu-btn { display: grid; }
  .header-inner { gap: 12px; height: 64px; }
  .header-actions { margin-left: auto; gap: 8px; }
  .nav { inset: 64px 0 auto 0; }
  .hide-sm { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-coord { justify-self: start; text-align: left; }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .field-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .logo-h { height: 26px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}