/* =========================================
   Design Tokens — shared across every page
   Single source of truth for color, spacing,
   radius, shadow, and motion values.
   ========================================= */
:root {
  --container-max: 1120px;

  /* Spacing scale */
  --space-3xs: 4px;
  --space-2xs: 6px;
  --space-xs: 10px;
  --space-sm: 14px;
  --space-md: 18px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 40px;
  --space-3xl: 56px;
  --space-4xl: 80px;
  --space-5xl: 112px;

  /* Ink / neutrals */
  --ink-900: #141313;
  --ink-800: #1f1f1f;
  --ink-700: #383737;
  --ink-600: #4b4a4a;
  --ink-500: #6b6a6a;
  --surface: #ffffff;
  --surface-soft: #fafafa;
  --surface-sunken: #f4f5f7;
  --line-soft: rgba(20, 19, 19, 0.08);
  --line-med: rgba(43, 111, 145, 0.2);

  /* Brand */
  --blue: #398fba;
  --blue-deep: #2b6f91;
  --coral: #ff6c63;
  --grad-main: linear-gradient(270deg, #398fba 6%, #ff6c63 51%);

  /* Shadow scale */
  --shadow-sm: 0 6px 18px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 12px 30px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 16px 44px rgba(0, 0, 0, 0.14);
  --shadow-coral: 0 12px 26px rgba(255, 108, 99, 0.18);
  --shadow-blue: 0 10px 24px rgba(57, 143, 186, 0.16);

  /* Radius scale */
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-pill: 999px;

  /* Motion */
  --ease-standard: cubic-bezier(0.2, 0.8, 0.2, 1);
  --ease-soft: cubic-bezier(0.22, 1, 0.36, 1);
  --motion-fast: 0.18s;
  --motion-standard: 0.28s;
  --motion-reveal: 0.5s;

  /* Button system */
  --btn-height: 48px;
  --btn-height-sm: 40px;
  --btn-padding-x: 24px;
  --btn-radius: 999px;
  --btn-font-size: 0.95rem;
  --btn-font-weight: 700;
}

/* =========================================
   Unified button system
   .btn / .btn--primary / .btn--secondary / .btn--text
   ========================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: var(--btn-height);
  padding: 0 var(--btn-padding-x);
  border-radius: var(--btn-radius);
  border: 1.5px solid transparent;
  font-family: "Montserrat", sans-serif;
  font-size: var(--btn-font-size);
  font-weight: var(--btn-font-weight);
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: transform var(--motion-fast) var(--ease-standard),
    box-shadow var(--motion-fast) var(--ease-standard),
    background-color var(--motion-fast) var(--ease-standard),
    border-color var(--motion-fast) var(--ease-standard),
    color var(--motion-fast) var(--ease-standard);
}

.btn--sm {
  height: var(--btn-height-sm);
  padding: 0 18px;
  font-size: 0.88rem;
}

.btn--primary {
  background: var(--blue);
  color: #fff;
  box-shadow: var(--shadow-blue);
}

@media (hover: hover) {
  .btn--primary:hover {
    background: var(--blue-deep);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
  }
}

.btn--secondary {
  background: transparent;
  color: var(--ink-800);
  border-color: var(--line-med);
}

@media (hover: hover) {
  .btn--secondary:hover {
    border-color: var(--blue);
    color: var(--blue-deep);
    transform: translateY(-3px);
    box-shadow: var(--shadow-sm);
  }
}

.btn--text {
  height: auto;
  padding: 2px 0;
  border-radius: 4px;
  background: none;
  color: var(--blue-deep);
  font-weight: 600;
  gap: 6px;
}

.btn--text .btn__arrow {
  transition: transform var(--motion-fast) var(--ease-standard);
}

@media (hover: hover) {
  .btn--text:hover {
    color: var(--coral);
  }

  .btn--text:hover .btn__arrow {
    transform: translateX(3px);
  }
}

.btn:active {
  transform: translateY(0);
}

.btn:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}

/* =========================================
   Scroll reveal — opacity + small translateY,
   applied once via IntersectionObserver (js/reveal.js)

   Elements start fully visible. JS only "arms" the hidden
   start-state (.reveal-armed) once it has confirmed it can
   run the reveal to completion, so a slow/blocked/absent
   script never leaves content stuck invisible.
   ========================================= */
.reveal-el.reveal-armed {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity var(--motion-reveal) var(--ease-soft),
    transform var(--motion-reveal) var(--ease-soft);
}

.reveal-el.reveal-armed.is-revealed {
  opacity: 1;
  transform: none;
}

.reveal-el--delay {
  transition-delay: 0.12s;
}

/* Short stagger for a small cluster of major elements (max 3 steps).
   Never use for per-word/letter reveals. */
.reveal-el--d1 { transition-delay: 0s; }
.reveal-el--d2 { transition-delay: 0.08s; }
.reveal-el--d3 { transition-delay: 0.16s; }

/* =========================================
   Reduced motion — global safety net for
   tokens-driven components only
   ========================================= */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto !important;
  }

  .btn,
  .btn--primary,
  .btn--secondary,
  .btn--text,
  .reveal-el,
  .card-fig,
  .card-img,
  .hero-window {
    transition: none !important;
    animation: none !important;
  }
}