/* ==========================================================================
   STYLE.CSS — Global resets, design tokens, base typography, shared layout,
   navbar, and buttons. Page-specific rules live in home.css.
   Keyframes live in animations.css.
   ========================================================================== */

/* ---------- 1. Design Tokens ---------- */
:root {
  /* Colors */
  --color-bg: #0b0b0b;
  --color-bg-elevated: #111111;
  --color-text-primary: #ffffff;
  --color-text-secondary: #b3b3b3;
  --color-text-muted: #6e6e6e;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-strong: rgba(255, 255, 255, 0.16);
  --color-accent: #ffffff;
  --color-glass: rgba(11, 11, 11, 0.55);

  /* Typography */
  --font-heading: "Space Grotesk", "General Sans", sans-serif;
  --font-body: "Inter", sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", monospace;

  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-lg: 1.125rem;
  --fs-xl: 1.5rem;
  --fs-2xl: 2rem;
  --fs-3xl: 2.75rem;
  --fs-4xl: 4rem;
  --fs-5xl: 5.5rem;

  /* Spacing scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2.5rem;
  --space-6: 4rem;
  --space-7: 6rem;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;

  /* Easing */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);

  /* Layout */
  --nav-height: 68px;
  --content-width: 1180px;
}

/* ---------- 2. Reset ---------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background: var(--color-bg);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
  list-style: none;
}

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

/* Respect reduced motion preference across the whole site */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- 3. Typography ---------- */
h1,
h2,
h3,
h4 {
  font-family: var(--font-heading);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  display: inline-block;
}

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

/* ---------- 4. Layout Helpers ---------- */
.container {
  width: 100%;
  max-width: var(--content-width);
  margin-inline: auto;
  padding-inline: var(--space-5);
}

.section {
  position: relative;
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-block: calc(var(--nav-height) + var(--space-6)) var(--space-6);
  scroll-snap-align: start;
}

/* ---------- 5. Background Grid + Glow (shared canvas layer) ---------- */
#grid-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.grid-glow {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(600px circle at 15% 30%, rgba(255, 255, 255, 0.15), transparent 60%),
    radial-gradient(350px circle at 30% 80%, rgba(255, 255, 255, 0.15), transparent 60%),
    radial-gradient(250px circle at 45% 35%, rgba(255, 255, 255, 0.15), transparent 60%),
    radial-gradient(300px circle at 85% 25%, rgba(255, 255, 255, 0.15), transparent 60%),
    radial-gradient(500px circle at 70% 70%, rgba(255, 255, 255, 0.15), transparent 60%);
  animation: glowDrift 18s ease-in-out infinite;
}

/* ---------- 6. Navbar ---------- */
.navbar {
  position: fixed;
  top: 25px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  padding: 10px 24px;
  width: min(90vw, 2000px);
  background: var(--color-glass);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
  transition: padding 0.4s var(--ease-out), width 0.4s var(--ease-out),
    top 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out);
}

.navbar.is-scrolled {
  top: 25px;
  padding: 10px 24px;
  width: min(88vw, 1000px);
  box-shadow: 0 10px 34px rgba(0, 0, 0, 0.5);
}

.navbar__brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: inherit;
}

.navbar__logo-icon {
    width: 50px;
    height: 50px;
    object-fit: contain;
    flex-shrink: 0;
}

.navbar__logo {
    font-family: var(--font-mono);
    font-size: var(--fs-sm);
    font-weight: 500;
    letter-spacing: 0.01em;
    color: var(--color-text-primary);
    white-space: nowrap;
}
   
.navbar__links {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.navbar__link {
  position: relative;
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
  padding-block: 4px;
  transition: color 0.3s var(--ease-out);
}

.navbar__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0%;
  height: 1px;
  background: var(--color-text-primary);
  box-shadow: 0 0 8px rgba(255, 255, 255, 0.5);
  transition: width 0.3s var(--ease-out);
}

.navbar__link:hover,
.navbar__link.is-active {
  color: var(--color-text-primary);
}

.navbar__link:hover::after,
.navbar__link.is-active::after {
  width: 100%;
}

.navbar__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
}

.navbar__toggle span {
  width: 20px;
  height: 1.5px;
  background: var(--color-text-primary);
  border-radius: 2px;
}

/* ---------- 7. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 14px 28px;
  font-size: var(--fs-sm);
  font-weight: 500;
  border-radius: var(--radius-pill);
  transition: all 0.35s var(--ease-out);
  white-space: nowrap;
}

.btn-primary {
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-strong);
}

.btn-primary:hover {
  background: var(--color-text-primary);
  color: var(--color-bg);
  border-color: var(--color-text-primary);
  transform: translateY(-2px);
}

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

.btn-secondary:hover {
  color: var(--color-text-primary);
  border-color: var(--color-border-strong);
  transform: translateY(-2px);
}

/* ---------- 8. Scroll Indicator ---------- */
.scroll-indicator {
  position: absolute;
  bottom: var(--space-5);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  animation: floatY 2.4s ease-in-out infinite;
  z-index: 5;
}

/* ---------- 9. Footer (used on sub-pages) ---------- */
.site-footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--color-border);
  padding: var(--space-5);
  text-align: center;
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}

/* ---------- 10. Responsive ---------- */
@media (max-width: 860px) {
  .navbar {
    width: 92vw;
    padding: 12px 18px;
  }

  .navbar__links {
    position: fixed;
    top: 82px;
    right: 4vw;
    left: 4vw;
    flex-direction: column;
    align-items: stretch;
    background: var(--color-glass);
    backdrop-filter: blur(18px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-3);
    gap: 0;
    transform-origin: top;
    transform: scaleY(0);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s var(--ease-out), opacity 0.3s var(--ease-out);
  }

  .navbar__links.is-open {
    transform: scaleY(1);
    opacity: 1;
    pointer-events: auto;
  }

  .navbar__link {
    padding: 12px 8px;
    border-bottom: 1px solid var(--color-border);
  }

  .navbar__link:last-child {
    border-bottom: none;
  }

  .navbar__toggle {
    display: flex;
  }
}