/* Kuble Design System, Stand CI/CD Manual Juli 2026 (Dark, Gold-Rampe) */
@font-face {
  font-family: "Montserrat";
  src: url("fonts/Montserrat-VariableFont_wght.ttf") format("truetype-variations"),
       url("fonts/Montserrat-VariableFont_wght.ttf") format("truetype");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("fonts/JetBrainsMono-VariableFont_wght.ttf") format("truetype-variations"),
       url("fonts/JetBrainsMono-VariableFont_wght.ttf") format("truetype");
  font-weight: 100 800;
  font-style: normal;
  font-display: swap;
}

:root {
  --kbl-ink-1000: #05070C;
  --kbl-ink-950:  #0A0E17;
  --kbl-ink-900:  #10141F;
  --kbl-ink-800:  #161B28;
  --kbl-ink-700:  #1E2535;
  --kbl-ink-600:  #2A3246;
  --kbl-ink-500:  #3C465C;
  --kbl-ink-300:  #8892A6;
  --kbl-ink-200:  #B4BCCC;
  --kbl-ink-50:   #F2F4F8;
  --kbl-blue-400: #4E7BFF;
  --kbl-blue-500: #2E5CFF;
  --kbl-blue-600: #1E46E6;
  --kbl-gold-400: #F8C465;
  --kbl-gold-500: #EDAA3C;
  --kbl-success:  #3DD68C;
  --kbl-danger:   #F2545B;

  --bg:            var(--kbl-ink-1000);
  --bg-raised:     var(--kbl-ink-900);
  --bg-elevated:   var(--kbl-ink-800);
  --bg-input:      var(--kbl-ink-700);
  --border:        var(--kbl-ink-700);
  --border-strong: var(--kbl-ink-600);
  --text:          var(--kbl-ink-50);
  --text-muted:    var(--kbl-ink-300);
  --accent:        var(--kbl-blue-500);
  --accent-hover:  var(--kbl-blue-400);
  --accent-press:  var(--kbl-blue-600);
  --highlight:     var(--kbl-gold-500);

  --font-sans: "Montserrat", ui-sans-serif, -apple-system, "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --r-md: 8px;
  --r-lg: 14px;
  --r-full: 9999px;
  --ease-out: cubic-bezier(0.2, 0.8, 0.2, 1);
  --dur-fast: 140ms;
  --container: 1240px;
  --container-narrow: 820px;
}

* { box-sizing: border-box; }
html { background: var(--bg); color: var(--text); -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.5;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}
::selection { background: var(--accent); color: var(--kbl-ink-50); }
:focus-visible { outline: 2px solid var(--kbl-gold-400); outline-offset: 3px; border-radius: 4px; }
[hidden] { display: none !important; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 20px; }
.container.narrow { max-width: var(--container-narrow); }

.skip {
  position: absolute; left: -9999px; top: 12px; z-index: 20;
  background: var(--accent); color: var(--kbl-ink-50); padding: 10px 18px; border-radius: var(--r-full);
  font-weight: 600; text-decoration: none;
}
.skip:focus { left: 12px; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* Header */
.site-header { border-bottom: 1px solid var(--border); }
.site-header .container { display: flex; align-items: center; gap: 14px; height: 72px; }
.logo { display: inline-flex; }
.logo img { display: block; height: 24px; width: auto; }
.header-label {
  font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--text-muted); padding-left: 14px; border-left: 1px solid var(--border-strong);
}

/* Marker (Tag: Strich + Uppercase-Label) */
.marker {
  display: flex; align-items: center; gap: 10px; margin: 0 0 16px;
  font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--text-muted);
}
.marker::before { content: ""; width: 16px; height: 2px; background: var(--highlight); flex: none; }

/* Hero */
.hero {
  position: relative; overflow: hidden;
  padding: clamp(64px, 12vw, 128px) 0 clamp(48px, 8vw, 96px);
  background:
    radial-gradient(60% 70% at 85% 0%, color-mix(in oklab, var(--kbl-blue-500) 28%, transparent), transparent 70%),
    radial-gradient(40% 50% at 100% 100%, color-mix(in oklab, var(--kbl-gold-500) 10%, transparent), transparent 70%),
    var(--bg);
  border-bottom: 1px solid var(--border);
}
h1 {
  font-weight: 700; font-size: clamp(2.5rem, 7.5vw, 5rem); line-height: 1.05; letter-spacing: -0.03em;
  margin: 0 0 28px; text-wrap: balance;
}
h1 .accent { font-weight: 300; color: var(--kbl-gold-400); }
.lead { font-size: clamp(1.0625rem, 2vw, 1.25rem); line-height: 1.6; color: var(--kbl-ink-200); margin: 0 0 32px; max-width: 62ch; }

h2 { font-weight: 700; font-size: clamp(1.75rem, 4vw, 2.5rem); line-height: 1.2; letter-spacing: -0.015em; margin: 0 0 28px; text-wrap: balance; }
h3 { font-weight: 700; font-size: 1.25rem; line-height: 1.2; letter-spacing: -0.015em; margin: 0 0 20px; }

.section { padding: clamp(56px, 9vw, 96px) 0 0; }
.section:focus { outline: none; }

/* Buttons */
.btn-primary, .btn-ghost {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 0 28px; border-radius: var(--r-full);
  font-family: var(--font-sans); font-size: 1rem; font-weight: 600; text-decoration: none; cursor: pointer;
  transition: background-color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}
.btn-primary { background: var(--accent); color: var(--kbl-ink-50); border: 1px solid var(--accent); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-primary:active { background: var(--accent-press); }
.btn-primary[disabled] { opacity: .6; cursor: progress; }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--border-strong); }
.btn-ghost:hover { border-color: var(--kbl-ink-300); background: var(--kbl-ink-900); }
.linkbtn {
  background: none; border: 0; padding: 0; font: inherit; font-size: 0.875rem; font-weight: 600;
  color: var(--kbl-blue-400); cursor: pointer; text-decoration: underline; text-underline-offset: 3px;
}
.linkbtn:hover { color: var(--kbl-ink-50); }

/* Cards */
.cards { list-style: none; margin: 0; padding: 0; display: grid; gap: 16px; grid-template-columns: 1fr; }
@media (min-width: 640px) { .cards { grid-template-columns: 1fr 1fr; } }
.card {
  background: var(--bg-raised); border: 1px solid var(--border); border-radius: var(--r-lg);
  padding: 28px; display: flex; flex-direction: column;
}
.card-meta { margin: 0 0 10px; font-family: var(--font-mono); font-size: 0.8125rem; color: var(--kbl-gold-400); letter-spacing: 0.04em; }
.card-link {
  margin-top: auto; color: var(--kbl-blue-400); font-weight: 600; text-decoration: none;
  transition: color var(--dur-fast) var(--ease-out);
}
.card-link:hover { color: var(--kbl-ink-50); text-decoration: underline; text-underline-offset: 4px; }

/* Steps */
.steps { list-style: none; margin: 0 0 20px; padding: 0; display: flex; flex-wrap: wrap; gap: 8px 24px; }
.steps li {
  display: flex; align-items: center; gap: 10px; color: var(--text-muted); font-size: 0.9375rem; font-weight: 600;
}
.step-no {
  display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: var(--r-full);
  border: 1px solid var(--border-strong); font-family: var(--font-mono); font-size: 0.8125rem;
}
.steps li.is-active { color: var(--text); }
.steps li.is-active .step-no { background: var(--accent); border-color: var(--accent); color: var(--kbl-ink-50); }
.steps li.is-done .step-no { border-color: var(--kbl-success); color: var(--kbl-success); }

/* Form */
.form-intro { margin: 0 0 22px; color: var(--kbl-ink-200); }
.hint { color: var(--text-muted); margin: 0 0 24px; font-size: 0.9375rem; }
.form { background: var(--bg-raised); border: 1px solid var(--border); border-radius: var(--r-lg); padding: 24px; }
@media (min-width: 640px) { .form { padding: 40px; } }
.form:focus { outline: none; }
.done h3 { margin-bottom: 10px; }
.done p:last-child { margin: 0; color: var(--kbl-ink-200); }
.verified {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; margin: 0 0 20px;
  padding: 12px 14px; border-radius: var(--r-md); font-weight: 600; word-break: break-all;
  background: color-mix(in oklab, var(--kbl-success) 8%, transparent);
  border: 1px solid color-mix(in oklab, var(--kbl-success) 45%, transparent);
}
.verified-badge {
  font-family: var(--font-mono); font-size: 0.6875rem; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--kbl-success); word-break: normal;
}
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.grid { display: grid; gap: 0 20px; grid-template-columns: 1fr; }
@media (min-width: 640px) { .grid { grid-template-columns: 1fr 1fr; } .grid .full { grid-column: 1 / -1; } }
.field { margin: 0 0 22px; }
fieldset.field { border: 0; padding: 0; min-width: 0; }
label, legend { display: block; font-weight: 600; font-size: 0.9375rem; margin-bottom: 8px; padding: 0; }
.req { color: var(--kbl-gold-400); }
.optional {
  font-family: var(--font-mono); font-weight: 400; font-size: 0.6875rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--text-muted); margin-left: 6px;
}
.help { margin: -2px 0 10px; color: var(--text-muted); font-size: 0.875rem; }
input[type="text"], input[type="email"], input[type="tel"], input[type="url"], textarea {
  width: 100%; min-height: 44px; padding: 10px 14px;
  font-family: var(--font-sans); font-size: 1rem; color: var(--text);
  background: var(--bg-input); border: 1px solid var(--border-strong); border-radius: var(--r-md);
  transition: border-color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out);
}
input::placeholder, textarea::placeholder { color: var(--kbl-ink-500); }
textarea { resize: vertical; min-height: 104px; line-height: 1.5; }
input:hover, textarea:hover { border-color: var(--kbl-ink-500); }
input:focus-visible, textarea:focus-visible {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--kbl-blue-500) 30%, transparent);
}
[aria-invalid="true"] { border-color: var(--kbl-danger) !important; }

.choices { display: grid; gap: 10px; }
.choice {
  display: flex; align-items: flex-start; gap: 12px; font-weight: 500; font-size: 1rem; cursor: pointer; margin: 0;
}
.choices .choice {
  padding: 12px 14px; background: var(--bg-input); border: 1px solid var(--border-strong); border-radius: var(--r-md);
  transition: border-color var(--dur-fast) var(--ease-out);
}
.choices .choice:hover { border-color: var(--kbl-ink-500); }
.choices .choice:has(input:checked) { border-color: var(--accent); background: color-mix(in oklab, var(--kbl-blue-500) 12%, var(--bg-input)); }
.choice input { width: 20px; height: 20px; margin: 1px 0 0; flex: none; accent-color: var(--accent); }
.consent { font-weight: 400; color: var(--kbl-ink-200); }

.error { margin: 8px 0 0; color: var(--kbl-danger); font-size: 0.875rem; }
.error:empty { display: none; }

.status { border-radius: var(--r-md); padding: 14px 16px; margin: 0 0 22px; font-weight: 600; border: 1px solid; }
.status.ok {
  color: var(--kbl-success);
  background: color-mix(in oklab, var(--kbl-success) 8%, transparent);
  border-color: color-mix(in oklab, var(--kbl-success) 45%, transparent);
}
.status.fail {
  color: var(--kbl-danger);
  background: color-mix(in oklab, var(--kbl-danger) 8%, transparent);
  border-color: color-mix(in oklab, var(--kbl-danger) 45%, transparent);
}

/* Footer */
.site-footer { margin-top: clamp(64px, 10vw, 112px); border-top: 1px solid var(--border); padding: 32px 0 48px; }
.site-footer .container { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 24px; }
.site-footer img { height: 18px; width: auto; opacity: .8; }
.site-footer p { margin: 0; font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.08em; color: var(--text-muted); }

@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }