/* ============================================================
   Braindoos Solutions — Homepage
   Design tokens + base
   ============================================================ */

:root {
  /* Brand */
  --primary:      #0B2A6B;   /* deep blue */
  --primary-600:  #1B3A8F;
  --primary-400:  #3B5BC4;
  --accent:       #22D3EE;   /* cyan — AI energy */
  --accent-600:   #06B6D4;

  /* Ink + neutrals (cool-toned) */
  --ink:          #0A1330;
  --ink-700:      #28324F;
  --muted:        #5A6884;
  --muted-200:    #8E99B3;

  /* Surfaces */
  --bg:           #FFFFFF;
  --panel:        #F4F7FC;   /* cool blue-grey */
  --panel-2:      #EDF2FA;
  --line:         #E4EAF4;
  --line-strong:  #D3DCEC;

  /* Dark surfaces (hero / cta) */
  --navy-900:     #060F2B;
  --navy-800:     #0A1840;
  --navy-700:     #102056;

  /* Type */
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body:    "Manrope", system-ui, sans-serif;

  /* Shape */
  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 22px;
  --r-xl: 28px;

  /* Shadow */
  --shadow-sm: 0 1px 2px rgba(10,19,48,.06), 0 2px 6px rgba(10,19,48,.05);
  --shadow-md: 0 4px 12px rgba(10,19,48,.07), 0 12px 32px rgba(10,19,48,.07);
  --shadow-lg: 0 8px 24px rgba(10,19,48,.10), 0 30px 60px rgba(10,19,48,.12);
  --shadow-glow: 0 0 0 1px rgba(34,211,238,.25), 0 8px 40px rgba(34,211,238,.18);

  --maxw: 1200px;
  --nav-h: 76px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-size: 17px;
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.08;
  margin: 0;
  color: var(--ink);
}

p { margin: 0; }
a { color: inherit; text-decoration: none; }
a:not(.btn):hover { color: inherit; }

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 40px;
}

/* Section rhythm */
.section { padding: 110px 0; }
.section--tight { padding: 84px 0; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 12.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--primary-600);
}
.eyebrow::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent-600);
  box-shadow: 0 0 0 4px rgba(34,211,238,.18);
}
.eyebrow--light { color: var(--accent); }
.eyebrow--light::before { background: var(--accent); box-shadow: 0 0 0 4px rgba(34,211,238,.22); }

.section-head { max-width: 680px; }
.section-head h2 {
  font-size: 44px;
  margin-top: 18px;
}
.section-head p {
  margin-top: 18px;
  font-size: 19px;
  color: var(--muted);
}
.section-head--center { margin: 0 auto; text-align: center; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 15.5px;
  letter-spacing: -0.01em;
  padding: 14px 24px;
  border-radius: 12px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .18s ease, box-shadow .25s ease, background .2s ease, border-color .2s ease, color .2s ease;
  white-space: nowrap;
}
.btn svg { width: 17px; height: 17px; }
.btn--primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 6px 18px rgba(11,42,107,.28);
}
.btn--primary:hover,
.btn--primary:focus-visible {
  background: var(--primary-600);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(11,42,107,.34);
}
.btn--primary:active { transform: translateY(0); box-shadow: 0 6px 18px rgba(11,42,107,.28); }
.btn--accent {
  background: linear-gradient(180deg, #2DE0F8, var(--accent-600));
  color: #042B33;
  box-shadow: 0 6px 22px rgba(34,211,238,.4);
}
.btn--accent:hover,
.btn--accent:focus-visible {
  color: #042B33;
  transform: translateY(-2px);
  box-shadow: 0 14px 34px rgba(34,211,238,.5);
}
.btn--accent:active { transform: translateY(0); box-shadow: 0 6px 22px rgba(34,211,238,.4); }
.btn--ghost {
  background: rgba(255,255,255,.04);
  border-color: var(--line-strong);
  color: var(--ink);
}
.btn--ghost:hover,
.btn--ghost:focus-visible {
  color: var(--ink);
  border-color: var(--primary-400);
  transform: translateY(-2px);
}
.btn--ghost-light {
  background: rgba(255,255,255,.06);
  border-color: rgba(255,255,255,.22);
  color: #fff;
}
.btn--ghost-light:hover,
.btn--ghost-light:focus-visible {
  color: #fff;
  background: rgba(255,255,255,.12);
  border-color: rgba(255,255,255,.4);
  transform: translateY(-2px);
}
.btn--lg { padding: 17px 30px; font-size: 16.5px; }

/* Pill / tag */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  background: var(--panel);
  border: 1px solid var(--line);
  color: var(--ink-700);
}

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1);
}
.reveal.in { opacity: 1; transform: none; }
.reveal[data-d="1"] { transition-delay: .08s; }
.reveal[data-d="2"] { transition-delay: .16s; }
.reveal[data-d="3"] { transition-delay: .24s; }
.reveal[data-d="4"] { transition-delay: .32s; }
@media (max-width: 1080px) {
  .section-head h2 { font-size: 36px; }
  .section-head p { font-size: 17px; }
}

@media (max-width: 640px) {
  .wrap { padding: 0 20px; }
  .section { padding: 72px 0; }
  .section--tight { padding: 56px 0; }
  .section-head h2 { font-size: 30px; margin-top: 14px; }
  .section-head p { font-size: 16px; margin-top: 14px; }
  .btn { font-size: 14.5px; padding: 13px 20px; }
  .btn--lg { padding: 15px 22px; font-size: 15px; }
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}