/* ===================================================================
   YOPPI — Base styles: reset, tokens, typography
   =================================================================== */

:root {
  /* Brand */
  --blue-900: #0a2a6b;
  --blue-800: #0d3a94;
  --blue-700: #0f4bc0;
  --blue-600: #1863e6;
  --blue-500: #2e7cf6;
  --blue-400: #5b9cff;
  --blue-300: #8fbcff;
  --blue-100: #e7f0ff;
  --blue-50: #f2f7ff;

  /* Neutrals */
  --navy-950: #080b12;
  --navy-900: #0c1120;
  --navy-850: #10192e;
  --navy-800: #141f38;
  --navy-700: #1c2b4a;
  --slate-600: #4a5568;
  --slate-500: #667085;
  --slate-400: #98a2b3;
  --slate-300: #d0d5dd;
  --slate-200: #e4e7ec;
  --slate-100: #eef1f6;
  --slate-50: #f7f9fc;
  --white: #ffffff;

  /* Semantic */
  --bg: var(--white);
  --bg-alt: var(--slate-50);
  --bg-dark: var(--navy-950);
  --bg-dark-alt: var(--navy-900);
  --text: var(--navy-950);
  --text-muted: var(--slate-500);
  --text-on-dark: var(--white);
  --text-on-dark-muted: var(--slate-400);
  --border: var(--slate-200);
  --border-dark: var(--navy-700);
  --accent: var(--blue-600);
  --accent-strong: var(--blue-700);
  --accent-soft: var(--blue-100);

  /* Layout */
  --container: 1200px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-sm: 0 1px 2px rgba(10, 20, 40, 0.06);
  --shadow-md: 0 8px 24px rgba(10, 20, 40, 0.08);
  --shadow-lg: 0 24px 64px rgba(10, 20, 40, 0.12);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Outfit", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-weight: 300;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1, h2, h3, h4, h5, p {
  margin: 0;
}

h1, h2, h3, h4 {
  font-family: "Outfit", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

button {
  font-family: inherit;
  cursor: pointer;
}

input, select, textarea {
  font-family: inherit;
  font-size: 1rem;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
}

.section--tight {
  padding: 64px 0;
}

.section--dark {
  background: var(--bg-dark);
  color: var(--text-on-dark);
}

.section--alt {
  background: var(--bg-alt);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: "DM Mono", monospace;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.section--dark .eyebrow {
  color: var(--blue-300);
}

.section-head {
  max-width: 680px;
  margin-bottom: 56px;
}

.section-head h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  margin-top: 12px;
}

.section-head p {
  margin-top: 16px;
  color: var(--text-muted);
  font-size: 1.05rem;
}

.section--dark .section-head p {
  color: var(--text-on-dark-muted);
}

.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.text-accent {
  color: var(--accent);
}

.section--dark .text-accent {
  color: var(--blue-400);
}

::selection {
  background: var(--blue-200, #bcd6ff);
  color: var(--navy-950);
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 768px) {
  .section {
    padding: 64px 0;
  }
  .section--tight {
    padding: 48px 0;
  }
}