/* ============================================================
   Capta+Edu — Design System
   Dark, premium. Brand: capta blue #1E8BFF · EDU orange #FF4D1C
   Type: Space Grotesk (display) · Manrope (body)
   ============================================================ */

:root {
  /* surfaces */
  --bg:        #09090B;
  --bg-1:      #0E0E11;
  --surface:   #141417;
  --surface-2: #1B1B20;
  --surface-3: #232329;
  --border:    rgba(255,255,255,0.08);
  --border-2:  rgba(255,255,255,0.14);

  /* text */
  --text:      #F5F6F8;
  --text-2:    #B6B9C2;
  --text-3:    #80838E;

  /* brand */
  --blue:      #1E8BFF;
  --blue-700:  #0E6EDC;
  --orange:    #FF4D1C;
  --orange-700:#E13A0C;
  --accent:    var(--orange);      /* tweakable primary accent */
  --accent-2:  var(--blue);

  --grad:      linear-gradient(110deg, var(--blue) 0%, #5e6bff 38%, var(--orange) 100%);
  --grad-warm: linear-gradient(120deg, var(--orange) 0%, #ff7a3d 100%);
  --grad-cool: linear-gradient(120deg, var(--blue) 0%, #59b0ff 100%);

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

  /* geometry */
  --radius-sm: 12px;
  --radius:    18px;
  --radius-lg: 26px;
  --radius-xl: 36px;
  --container: 1200px;
  --gutter:    clamp(20px, 5vw, 64px);

  --shadow:    0 24px 60px -20px rgba(0,0,0,0.7);
  --glow-blue: 0 0 0 1px rgba(30,139,255,0.25), 0 20px 60px -20px rgba(30,139,255,0.45);
  --glow-orange: 0 0 0 1px rgba(255,77,28,0.25), 0 20px 60px -20px rgba(255,77,28,0.45);

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  font-weight: 400;
  letter-spacing: 0.005em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* page-wide ambient backdrop */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(900px 600px at 78% -8%, rgba(255,77,28,0.10), transparent 60%),
    radial-gradient(1000px 700px at 8% 4%, rgba(30,139,255,0.12), transparent 58%),
    var(--bg);
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255,255,255,0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.022) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(120% 90% at 50% 0%, #000 35%, transparent 78%);
          mask-image: radial-gradient(120% 90% at 50% 0%, #000 35%, transparent 78%);
  pointer-events: none;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.section { padding-block: clamp(72px, 11vw, 140px); position: relative; }
.section--tight { padding-block: clamp(56px, 8vw, 96px); }

/* ---------- Type ---------- */
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; line-height: 1.04; letter-spacing: -0.02em; margin: 0; }
.display {
  font-size: clamp(2.6rem, 6.4vw, 5.2rem);
  line-height: 0.98;
  letter-spacing: -0.035em;
}
.h-xl { font-size: clamp(2rem, 4.4vw, 3.4rem); letter-spacing: -0.03em; }
.h-lg { font-size: clamp(1.6rem, 3vw, 2.4rem); }
.h-md { font-size: clamp(1.25rem, 2vw, 1.6rem); letter-spacing: -0.015em; }
p { margin: 0; text-wrap: pretty; }
.lead { font-size: clamp(1.05rem, 1.6vw, 1.28rem); color: var(--text-2); line-height: 1.6; }
.muted { color: var(--text-2); }
.dim { color: var(--text-3); }

.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
          background-clip: text;
  color: transparent;
}
.blue-text { color: var(--blue); }
.orange-text { color: var(--orange); }

/* eyebrow / kicker */
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-2);
}
.kicker::before {
  content: "";
  width: 26px; height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.kicker--center::before { display: none; }

/* ---------- Buttons ---------- */
.btn {
  --b: var(--accent);
  display: inline-flex; align-items: center; justify-content: center;
  gap: 0.55em;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.98rem;
  letter-spacing: 0.01em;
  padding: 0.95em 1.6em;
  border-radius: 100px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .25s var(--ease), border-color .25s;
  white-space: nowrap;
}
.btn svg { width: 1.1em; height: 1.1em; }
.btn--primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 14px 30px -12px color-mix(in srgb, var(--accent) 70%, transparent);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 22px 44px -14px color-mix(in srgb, var(--accent) 75%, transparent); }
.btn--ghost {
  background: rgba(255,255,255,0.04);
  border-color: var(--border-2);
  color: var(--text);
}
.btn--ghost:hover { background: rgba(255,255,255,0.09); transform: translateY(-2px); }
.btn--lg { padding: 1.1em 2em; font-size: 1.05rem; }
.btn--block { width: 100%; }

/* ---------- Cards ---------- */
.card {
  background: linear-gradient(180deg, var(--surface) 0%, var(--bg-1) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

/* ---------- Pills / chips ---------- */
.chip {
  display: inline-flex; align-items: center; gap: 0.5em;
  padding: 0.5em 0.95em;
  border: 1px solid var(--border-2);
  border-radius: 100px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-2);
  background: rgba(255,255,255,0.03);
}
.chip .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 10px var(--accent); }

/* scroll reveal — only armed when JS adds .js-reveal (content visible if JS fails) */
.js-reveal [data-reveal] { opacity: 0; transform: translateY(24px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.js-reveal [data-reveal].in { opacity: 1; transform: none; }
[data-reveal][data-d="1"] { transition-delay: .08s; }
[data-reveal][data-d="2"] { transition-delay: .16s; }
[data-reveal][data-d="3"] { transition-delay: .24s; }
[data-reveal][data-d="4"] { transition-delay: .32s; }
.reveal-failsafe [data-reveal] { opacity: 1 !important; transform: none !important; }
@media (prefers-reduced-motion: reduce){ .js-reveal [data-reveal]{opacity:1;transform:none;} }

/* Tweak theme: midnight blue */
body.bg-midnight {
  --bg:        #070A14;
  --bg-1:      #0B0F1D;
  --surface:   #121734;
  --surface-2: #1A2147;
  --surface-3: #232C57;
}
body.bg-midnight::before {
  background:
    radial-gradient(900px 600px at 78% -8%, rgba(255,77,28,0.12), transparent 60%),
    radial-gradient(1000px 700px at 8% 4%, rgba(30,139,255,0.18), transparent 58%),
    var(--bg);
}