/* ============================================================
   GLOBAL STYLES — IBlockTechs
   Reset, base elements, accessibility helpers, scroll reveal.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300;0,9..144,400;0,9..144,500;1,9..144,300;1,9..144,400&family=Inter:wght@300;400;500;600&display=swap');
@import url('./tokens.css');

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

* { margin: 0; padding: 0; }

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  overflow-x: hidden;
}

body.is-locked { overflow: hidden; }

/* ============================================ TYPOGRAPHY ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--font-weight-light);
  letter-spacing: var(--tracking-heading);
  color: var(--color-text);
}
h1 { font-size: var(--text-display);    line-height: var(--leading-display);    letter-spacing: var(--tracking-display); }
h2 { font-size: var(--text-heading-lg); line-height: var(--leading-heading-lg); letter-spacing: var(--tracking-heading-lg); }
h3 { font-size: var(--text-heading);    line-height: var(--leading-heading); }
h4 { font-size: var(--text-heading-sm); line-height: var(--leading-heading-sm); }
h5 { font-size: var(--text-subheading); line-height: var(--leading-subheading); }
h6 { font-size: var(--text-body);       line-height: var(--leading-body); font-weight: var(--font-weight-semibold); }

em { font-style: italic; color: var(--color-accent-soft); font-weight: inherit; }

p { line-height: var(--leading-body); }

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-base);
}
a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 2px;
}

ul, ol { list-style: none; }

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

button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
  color: inherit;
}
button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

/* ============================================ FORMS ============================================ */
input, textarea, select {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: rgba(23, 23, 33, 0.6);
  border: 1px solid rgba(112, 112, 125, 0.5);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-pill);
  transition: border-color var(--transition-base), background-color var(--transition-base);
}
input::placeholder, textarea::placeholder { color: var(--color-text-muted); }
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--color-accent);
  background-color: rgba(82, 102, 235, 0.05);
}

/* ============================================ SCROLLBAR ============================================ */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb {
  background: var(--color-surface-3);
  border-radius: 5px;
  border: 2px solid var(--color-bg);
}
::-webkit-scrollbar-thumb:hover { background: var(--color-text-faint); }

::selection { background-color: var(--color-accent); color: var(--color-white); }

/* ============================================ UTILITIES ============================================ */
.container {
  max-width: var(--page-max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.eyebrow {
  font-family: var(--font-body);
  font-size: var(--text-caption);
  font-weight: var(--font-weight-medium);
  letter-spacing: var(--tracking-caption);
  text-transform: uppercase;
  color: var(--color-accent);
}

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

/* Skip link — keyboard users hit Tab once and can jump to main */
.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -40px;
  background: var(--color-text);
  color: var(--color-bg);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  font-size: var(--text-body-sm);
  font-weight: var(--font-weight-medium);
  z-index: var(--z-tooltip);
  transition: top var(--transition-fast);
}
.skip-link:focus {
  top: var(--space-4);
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ============================================ SCROLL REVEAL ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.7s var(--ease-out),
    transform 0.7s var(--ease-out);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal[data-delay="1"] { transition-delay: 0.08s; }
.reveal[data-delay="2"] { transition-delay: 0.16s; }
.reveal[data-delay="3"] { transition-delay: 0.24s; }
.reveal[data-delay="4"] { transition-delay: 0.32s; }
.reveal[data-delay="5"] { transition-delay: 0.40s; }

.will-animate {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 0.55s var(--ease-out),
    transform 0.55s var(--ease-out);
}
.will-animate.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================ ACCESSIBILITY ============================================ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal,
  .will-animate {
    opacity: 1 !important;
    transform: none !important;
  }
}

/* ============================================ RESPONSIVE BASE ============================================ */
@media (max-width: 768px) {
  h1 { font-size: 56px; }
  h2 { font-size: 40px; }
  .container { padding: 0 var(--space-4); }
}
@media (max-width: 480px) {
  h1 { font-size: 44px; }
  h2 { font-size: 32px; }
}