/* ==========================================================================
   Base — reset, typography, utilities, motion primitives
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-base);
  background: var(--bg-canvas);
  color: var(--text-primary);
  font-size: var(--fs-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background-color var(--dur-base) var(--ease-out), color var(--dur-base) var(--ease-out);
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-base);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin: 0;
}

p { margin: 0; color: var(--text-secondary); }
a { text-decoration: none; color: inherit; }
img, svg { max-width: 100%; display: block; }
button { font-family: inherit; }

::selection { background: var(--brand-500); color: #fff; }

/* Scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: var(--radius-full); border: 2px solid var(--bg-canvas); }
::-webkit-scrollbar-thumb:hover { background: var(--brand-500); }

/* Focus visibility (accessibility) */
:focus-visible {
  outline: 2px solid var(--brand-500);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Skip link */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 9999;
  background: var(--brand-500);
  color: #fff;
  padding: var(--space-3) var(--space-5);
  border-radius: 0 0 var(--radius-md) 0;
  font-weight: 600;
}
.skip-link:focus { left: 0; }

/* ---- Layout helpers ---- */
.container-xl {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-6);
}
@media (max-width: 576px) {
  .container-xl { padding-inline: var(--space-4); }
}

.section { padding-block: var(--space-24); }
@media (max-width: 768px) {
  .section { padding-block: var(--space-16); }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-sm);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-brand);
  background: var(--brand-50);
  border: 1px solid var(--brand-100);
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-full);
}
[data-theme="dark"] .eyebrow { background: rgba(213, 24, 45, 0.12); border-color: rgba(213, 24, 45, 0.28); }

.text-gradient {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.text-secondary { color: var(--text-secondary) !important; }
.text-tertiary { color: var(--text-tertiary) !important; }
.text-brand { color: var(--text-brand) !important; }

.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }
.fw-800 { font-weight: 800; }

/* ---- Motion: reveal-on-scroll ---- */
[data-animate] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out);
}
[data-animate].in-view { opacity: 1; transform: translateY(0); }
[data-animate="fade"] { transform: none; }
[data-animate="scale"] { transform: scale(0.92); }
[data-animate="scale"].in-view { transform: scale(1); }
[data-animate="left"] { transform: translateX(-32px); }
[data-animate="left"].in-view { transform: translateX(0); }
[data-animate="right"] { transform: translateX(32px); }
[data-animate="right"].in-view { transform: translateX(0); }

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

/* ---- Keyframes ---- */
@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}
@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
@keyframes pulseGlow {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}
@keyframes shimmer {
  0% { background-position: -400px 0; }
  100% { background-position: 400px 0; }
}
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes ripple {
  to { transform: scale(3); opacity: 0; }
}
@keyframes dashFlow {
  to { stroke-dashoffset: -24; }
}

.float-anim { animation: floatY 6s var(--ease-in-out) infinite; }
.float-anim-delay { animation: floatY 6s var(--ease-in-out) infinite; animation-delay: 1.4s; }
.float-anim-delay2 { animation: floatY 7s var(--ease-in-out) infinite; animation-delay: 2.6s; }