/* ==========================================================================
   K1 Nova design system
   Dark, editorial, blue-led. Violet is used sparingly as a second accent.
   ========================================================================== */

/* ---------- Fonts (self hosted, SIL Open Font License) ---------- */
@font-face {
  font-family: 'Poppins';
  src: url('/fonts/poppins-400.woff') format('woff');
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'Poppins';
  src: url('/fonts/poppins-500.woff') format('woff');
  font-weight: 500; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'Poppins';
  src: url('/fonts/poppins-700.woff') format('woff');
  font-weight: 700; font-style: normal; font-display: swap;
}

/* ---------- Tokens ---------- */
:root {
  /* Surfaces */
  --ink-900: #070B14;
  --ink-850: #090E1A;
  --ink-800: #0D1424;
  --ink-700: #111A2E;
  --ink-600: #16203a;

  /* Accents */
  --blue: #3B82F6;
  --blue-light: #60A5FA;
  --blue-deep: #1D4ED8;
  /* Filled surfaces that carry white text use the deeper blue so contrast clears 4.5:1. */
  --blue-solid: #2563EB;
  --violet: #7C3AED;

  /* Type */
  --white: #FFFFFF;
  --text: #FFFFFF;
  --muted: #AAB4C8;
  --muted-dim: #7F8BA3;

  /* Lines */
  --line: rgba(255, 255, 255, 0.075);
  --line-2: rgba(255, 255, 255, 0.13);
  --line-3: rgba(255, 255, 255, 0.22);

  /* Radii */
  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 24px;
  --r-xl: 32px;
  --r-2xl: 44px;
  --r-3xl: 60px;
  --r-pill: 999px;

  /* Layout */
  --page: 1240px;
  --page-wide: 1440px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --section-y: clamp(4.5rem, 9vw, 9rem);

  /* Type scale, fluid */
  --fs-display: clamp(2.6rem, 1.3rem + 4.4vw, 4.35rem);
  --fs-h1: clamp(2.35rem, 1.35rem + 4.2vw, 4.5rem);
  --fs-h2: clamp(1.95rem, 1.25rem + 2.9vw, 3.5rem);
  --fs-h3: clamp(1.35rem, 1.1rem + 1.05vw, 1.9rem);
  --fs-h4: clamp(1.1rem, 1rem + 0.45vw, 1.3rem);
  --fs-lead: clamp(1.05rem, 1rem + 0.42vw, 1.28rem);
  --fs-body: clamp(1rem, 0.97rem + 0.16vw, 1.08rem);
  --fs-sm: 0.9375rem;
  --fs-xs: 0.8125rem;

  --font-display: 'Poppins', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-body: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI',
    Roboto, 'Helvetica Neue', Arial, sans-serif;

  /* Motion */
  --ease: cubic-bezier(0.22, 0.68, 0, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-lift: 0 40px 90px -30px rgba(0, 0, 0, 0.9), 0 10px 30px -12px rgba(0, 0, 0, 0.7);
  --shadow-glow: 0 0 0 1px rgba(59, 130, 246, 0.22), 0 30px 70px -30px rgba(59, 130, 246, 0.5);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 120px;
}

body {
  background: var(--ink-900);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  min-height: 100vh;
}

img, svg, video, picture { display: block; max-width: 100%; }
img, video { height: auto; }

button, input, select, textarea { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }

:where(h1, h2, h3, h4, h5) {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.06;
  letter-spacing: -0.028em;
  text-wrap: balance;
}

p { text-wrap: pretty; }

::selection { background: rgba(59, 130, 246, 0.32); color: #fff; }

:focus-visible {
  outline: 2px solid var(--blue-light);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- Utilities ---------- */
.page { width: 100%; max-width: var(--page); margin-inline: auto; padding-inline: var(--gutter); }
.page-wide { width: 100%; max-width: var(--page-wide); margin-inline: auto; padding-inline: var(--gutter); }

.section { padding-block: var(--section-y); position: relative; }
.section--tight { padding-block: clamp(3rem, 6vw, 5.5rem); }
.section--flush-top { padding-top: 0; }

.stack > * + * { margin-top: 1.1rem; }

.skip-link {
  position: absolute; left: 1rem; top: -100px; z-index: 300;
  background: var(--blue-deep); color: #fff; padding: 0.75rem 1.25rem;
  border-radius: var(--r-sm); font-weight: 600; transition: top 0.2s;
}
.skip-link:focus { top: 1rem; }

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ---------- Type helpers ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--font-body);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.eyebrow::before {
  content: ''; width: 6px; height: 6px; border-radius: 50%;
  background: var(--blue); box-shadow: 0 0 12px 2px rgba(59, 130, 246, 0.7);
  flex: none;
}
.eyebrow--plain::before { display: none; }

.display { font-size: var(--fs-display); }
.h1 { font-size: var(--fs-h1); }
.h2 { font-size: var(--fs-h2); }
.h3 { font-size: var(--fs-h3); line-height: 1.2; letter-spacing: -0.018em; }
.h4 { font-size: var(--fs-h4); line-height: 1.3; letter-spacing: -0.012em; font-weight: 500; }

.lead { font-size: var(--fs-lead); color: var(--muted); line-height: 1.62; max-width: 56ch; }
.muted { color: var(--muted); }
.measure { max-width: 62ch; }
.measure-sm { max-width: 46ch; }

.grad-text {
  background: linear-gradient(102deg, var(--blue-light) 4%, var(--blue) 44%, var(--violet) 96%);
  -webkit-background-clip: text; background-clip: text;
  color: transparent; -webkit-text-fill-color: transparent;
}

/* ---------- Buttons ---------- */
.btn {
  --btn-bg: var(--blue);
  --btn-fg: #fff;
  display: inline-flex; align-items: center; gap: 0.7rem;
  padding: 0.95rem 1.55rem;
  border-radius: var(--r-pill);
  background: var(--btn-bg); color: var(--btn-fg);
  font-weight: 600; font-size: var(--fs-sm); letter-spacing: -0.005em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease),
    background-color 0.3s var(--ease), border-color 0.3s var(--ease);
  will-change: transform;
  text-align: left;
}
.btn__arrow {
  display: grid; place-items: center;
  width: 1.5rem; height: 1.5rem; border-radius: 50%;
  background: rgba(255, 255, 255, 0.18);
  flex: none;
  transition: transform 0.4s var(--ease), background-color 0.3s var(--ease);
}
.btn__arrow svg { width: 0.7rem; height: 0.7rem; }
.btn:hover { transform: translateY(-2px); }
.btn:hover .btn__arrow { transform: translateX(2px); }

.btn--primary {
  background: linear-gradient(112deg, var(--blue-solid) 0%, #3F5FEA 52%, #6D3FE0 130%);
  box-shadow: 0 14px 34px -14px rgba(59, 130, 246, 0.85), inset 0 1px 0 rgba(255, 255, 255, 0.22);
}
.btn--primary:hover {
  box-shadow: 0 20px 46px -14px rgba(59, 130, 246, 0.95), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.btn--ghost {
  background: rgba(255, 255, 255, 0.045);
  border-color: var(--line-2);
  color: var(--text);
  backdrop-filter: blur(8px);
}
.btn--ghost .btn__arrow { background: rgba(255, 255, 255, 0.11); }
.btn--ghost:hover { background: rgba(255, 255, 255, 0.085); border-color: var(--line-3); }

.btn--sm { padding: 0.62rem 1.1rem; font-size: var(--fs-xs); }
.btn--lg { padding: 1.08rem 1.9rem; font-size: 1rem; }
.btn--block { width: 100%; justify-content: center; }

.link-arrow {
  display: inline-flex; align-items: center; gap: 0.55rem;
  min-height: 2.5rem; padding-block: 0.2rem;
  font-weight: 600; font-size: var(--fs-sm); color: var(--blue-light);
  transition: gap 0.3s var(--ease), color 0.3s var(--ease);
}
.link-arrow svg { width: 0.8rem; height: 0.8rem; transition: transform 0.3s var(--ease); }
.link-arrow:hover { gap: 0.8rem; color: #8DBBFF; }

/* ---------- Ambient light ---------- */
.glow {
  position: absolute; pointer-events: none; z-index: 0;
  border-radius: 50%; filter: blur(90px);
}
.glow--blue { background: radial-gradient(circle, rgba(59, 130, 246, 0.30), transparent 68%); }
.glow--violet { background: radial-gradient(circle, rgba(124, 58, 237, 0.22), transparent 70%); }

/* ---------- Panels ---------- */
.panel {
  position: relative;
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-radius: var(--r-2xl);
  overflow: hidden;
}
.panel--raised { background: var(--ink-700); box-shadow: var(--shadow-lift); }
.panel--overlap { margin-top: clamp(-7rem, -6vw, -3rem); z-index: 3; }

.surface-alt { background: var(--ink-800); }

.hairline {
  height: 1px; border: 0;
  background: linear-gradient(90deg, transparent, var(--line-2) 22%, var(--line-2) 78%, transparent);
}

/* ---------- Reveal on scroll ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.85s var(--ease-out), transform 0.85s var(--ease-out);
  transition-delay: var(--reveal-delay, 0ms);
}
[data-reveal].is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
}