/* ======================================================
   BITROXIA PMS — DESIGN TOKENS & BASE
   Display: Space Grotesk / Body: Inter
   ====================================================== */

:root{
  /* ---- Brand palette (derived from logo: navy base, blue/purple/cyan figures, upward arrow) ---- */
  --brand-blue:        #2F6BFF;
  --brand-blue-dim:    #1E4FCC;
  --brand-purple:      #8B5CF6;
  --brand-cyan:        #22D3EE;
  --brand-navy:        #070B1A;

  /* ---- Dark theme (default) ---- */
  --bg:            #070B1A;
  --bg-soft:       #0A0F24;
  --surface:       #0F1530;
  --surface-2:     #141B3D;
  --surface-3:     #1A2247;
  --ink:           #EEF1FB;
  --ink-muted:     #9AA3C7;
  --ink-faint:     #6B739A;
  --border:        rgba(238,241,251,0.09);
  --border-strong: rgba(238,241,251,0.16);
  --primary:       var(--brand-blue);
  --primary-ink:   #FFFFFF;
  --accent:        var(--brand-purple);
  --accent-2:      var(--brand-cyan);
  --success:       #34D399;
  --error:         #FB7185;
  --shadow-color:  0, 8, 30;
  --glow-blue:     rgba(47,107,255,0.35);
  --glow-purple:   rgba(139,92,246,0.28);
  --glow-cyan:     rgba(34,211,238,0.25);
  --overlay-scrim: rgba(5,8,20,0.72);

  /* ---- Type ---- */
  --font-display: "Space Grotesk", "Segoe UI", sans-serif;
  --font-body: "Inter", "Segoe UI", sans-serif;

  --fs-xs: 0.75rem;    /* 12 */
  --fs-sm: 0.875rem;   /* 14 */
  --fs-base: 1rem;     /* 16 */
  --fs-md: 1.125rem;   /* 18 */
  --fs-lg: 1.5rem;     /* 24 */
  --fs-xl: 2rem;       /* 32 */
  --fs-2xl: 3rem;      /* 48 */
  --fs-3xl: 4rem;      /* 64 */

  /* ---- Spacing (8px base) ---- */
  --sp-1: 8px;
  --sp-2: 16px;
  --sp-3: 24px;
  --sp-4: 32px;
  --sp-6: 48px;
  --sp-8: 64px;
  --sp-12: 96px;
  --sp-15: 120px;

  /* ---- Radius / shadow ---- */
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  --shadow-sm: 0 2px 8px rgba(var(--shadow-color), 0.24);
  --shadow-md: 0 12px 32px rgba(var(--shadow-color), 0.32);
  --shadow-lg: 0 24px 64px rgba(var(--shadow-color), 0.4);

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-fast: 0.18s;
  --dur-med: 0.4s;
  --dur-slow: 0.8s;

  --container: 1240px;
  --nav-h: 84px;
}

/* ---- Light theme override ---- */
:root[data-theme="light"]{
  --bg:            #F6F7FC;
  --bg-soft:       #EFF1FA;
  --surface:       #FFFFFF;
  --surface-2:     #F3F5FC;
  --surface-3:     #E9ECF9;
  --ink:           #10142C;
  --ink-muted:     #545D82;
  --ink-faint:     #848CB0;
  --border:        rgba(16,20,44,0.08);
  --border-strong: rgba(16,20,44,0.14);
  --primary:       var(--brand-blue);
  --accent:        #7C3AED;
  --accent-2:      #0E8CA8;
  --shadow-color:  16, 24, 60;
  --glow-blue:     rgba(47,107,255,0.14);
  --glow-purple:   rgba(124,58,237,0.12);
  --glow-cyan:     rgba(14,140,168,0.12);
  --overlay-scrim: rgba(16,20,44,0.55);
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *, *::before, *::after{ animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

body{
  margin: 0;
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--ink);
  font-size: var(--fs-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background var(--dur-med) var(--ease), color var(--dur-med) var(--ease);
  overflow-x: hidden;
}

img{ max-width: 100%; display: block; }
a{ color: inherit; text-decoration: none; }
button{ font-family: inherit; cursor: pointer; }
ul{ margin: 0; padding: 0; list-style: none; }
h1,h2,h3,h4,p{ margin: 0; }

h1,h2,h3,h4{
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.1;
  color: var(--ink);
}

.container{
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--sp-3);
}

section{ position: relative; }

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

:focus-visible{
  outline: 2px solid var(--accent-2);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---- Eyebrow / labels ---- */
.eyebrow{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: var(--sp-2);
}
.eyebrow::before{
  content: "";
  width: 20px;
  height: 2px;
  background: linear-gradient(90deg, var(--brand-blue), var(--brand-cyan));
  border-radius: 2px;
}

.section-head{
  max-width: 640px;
  margin-bottom: var(--sp-6);
}
.section-head h2{
  font-size: clamp(1.75rem, 3.2vw, var(--fs-xl));
  margin-bottom: var(--sp-2);
}
.section-head p{
  color: var(--ink-muted);
  font-size: var(--fs-md);
}
.section-head.center{
  margin-inline: auto;
  text-align: center;
}
.section-head.center .eyebrow{ justify-content: center; }
.section-head.center .eyebrow::before{ display:none; }

/* ---- Buttons ---- */
.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--fs-sm);
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: transform var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
  white-space: nowrap;
  min-height: 44px;
}
.btn svg,
.btn i{
  width: 16px !important;
  height: 16px !important;
  max-width: 16px !important;
  max-height: 16px !important;
  min-width: 16px !important;
  min-height: 16px !important;
  flex-shrink: 0 !important;
  display: inline-block !important;
  vertical-align: middle !important;
  transition: transform var(--dur-fast) var(--ease);
}
.btn:hover svg{ transform: translateX(3px); }
.btn:active{ transform: translateY(1px) scale(0.99); }

.btn-primary{
  background: linear-gradient(135deg, var(--brand-blue), #4A7CFF);
  color: #fff;
  box-shadow: 0 8px 24px var(--glow-blue);
}
.btn-primary:hover{
  box-shadow: 0 12px 32px var(--glow-blue);
  transform: translateY(-2px);
}

.btn-secondary{
  background: transparent;
  color: var(--ink);
  border-color: var(--border-strong);
}
.btn-secondary:hover{
  border-color: var(--accent-2);
  color: var(--accent-2);
}

.btn-ghost{
  background: var(--surface-2);
  color: var(--ink);
}
.btn-ghost:hover{ background: var(--surface-3); }

.btn-sm{ padding: 10px 18px; font-size: var(--fs-xs); min-height: 40px; }
.btn-block{ width: 100%; }

/* ---- Chip / pill ---- */
.chip{
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: var(--surface-2);
  border: 1px solid var(--border);
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--ink-muted);
}

/* ---- Reveal-on-scroll ---- */
[data-reveal]{
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
[data-reveal].is-visible{
  opacity: 1;
  transform: translateY(0);
}
[data-reveal-group] > *{ transition-delay: calc(var(--i, 0) * 90ms); }

/* ---- Signature arrow motif (from logo's upward arrow) ---- */
.arrow-divider{
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-1);
  padding: var(--sp-6) 0 var(--sp-3);
  opacity: 0.9;
}
.arrow-divider svg{ width: 28px; height: 28px; }
.arrow-divider .line{
  height: 1px;
  width: 64px;
  background: linear-gradient(90deg, transparent, var(--border-strong), transparent);
}

.text-gradient{
  background: linear-gradient(120deg, var(--brand-blue) 10%, var(--brand-purple) 55%, var(--brand-cyan) 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.skip-link{
  position: absolute;
  left: -999px;
  top: auto;
  background: var(--primary);
  color: #fff;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  z-index: 999;
}
.skip-link:focus{
  left: var(--sp-2);
  top: var(--sp-2);
}