/* =========================================================
   MAIN.CSS — Design tokens & base styles
   ========================================================= */

:root {
  /* Color */
  --bg: #0a0e15;
  --surface: #10161f;
  --surface-2: #151c27;
  --border: rgba(255, 255, 255, 0.08);

  --ocean: #1768ac;
  --ocean-dark: #0d4a80;
  --cyan: #34e4ea;

  --text: #eaf0f6;
  --text-muted: #93a2b3;
  --text-faint: #5c6c7d;

  /* Type */
  --font-display: "Space Grotesk", "Inter", sans-serif;
  --font-body: "Inter", sans-serif;

  /* Layout */
  --max-width: 1100px;
  --radius: 12px;
  --radius-sm: 8px;
  --nav-height: 64px;
  --gap: 16px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.55;
  min-height: 100vh;
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul {
  list-style: none;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.92rem;
  transition: opacity 0.15s ease, border-color 0.15s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--ocean);
  color: #fff;
}

.btn-primary:hover {
  opacity: 0.88;
}

.btn-outline {
  border: 1px solid var(--border);
  color: var(--text);
}

.btn-outline:hover {
  border-color: var(--cyan);
}

/* ---------- Section ---------- */
.section {
  padding: 56px 0;
}

.section-head {
  margin-bottom: 28px;
}

.section-head h2 {
  font-size: clamp(1.35rem, 2vw, 1.8rem);
}

.section-head p {
  color: var(--text-muted);
  margin-top: 6px;
  font-size: 0.94rem;
}

/* ---------- Card ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

/* ---------- Toast ---------- */
.toast-stack {
  position: fixed;
  bottom: 20px;
  right: 20px;
  left: 20px;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
  z-index: 999;
  pointer-events: none;
}

.toast {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--cyan);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  max-width: 280px;
}