/* ═══════════════════════════════════════════════════════
   PRIMARO.AI — Design System (Standalone Landing Page)
   ═══════════════════════════════════════════════════════ */

/* ── Design Tokens ─────────────────────────────────────── */
:root {
  /* Background (PRIMARO Signal System: Navy) */
  --ds-bg-deep:      #0F172A;
  --ds-bg-surface:   #1E293B;
  --ds-bg-elevated:  #334155;
  --ds-bg-hover:     #475569;

  /* Borders */
  --ds-border:       #334155;
  --ds-border-light: #475569;

  /* Accent Colors (PRIMARO Signal System: Pathway Blue) */
  --ds-accent:       #38BDF8;
  --ds-accent-hover: #0284C7;
  --ds-accent-glow:  rgba(56, 189, 248, 0.3);
  --ds-accent-cyan:  #38BDF8;
  --ds-gold:         #FBBF24;
  --ds-gold-glow:    rgba(251, 191, 36, 0.3);

  /* Status */
  --ds-success:      #34D399;
  --ds-success-glow: rgba(52, 211, 153, 0.3);
  --ds-warning:      #FBBF24;

  /* Color Aliases */
  --ds-cyan:         #38BDF8;
  --ds-blue:         #38BDF8;
  --ds-green:        #34D399;

  /* PRIMARO Brand */
  --ds-caerus-ae:    #FBBF24;
  --ds-caerus-navy:  #0F172A;

  /* Text */
  --ds-text:         #F9FAFB;
  --ds-text-secondary: #94A3B8;
  --ds-text-muted:   #CBD5E1;

  /* Typography */
  --ds-font-display: 'Syne', sans-serif;
  --ds-font-body:    'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --ds-font-mono:    'JetBrains Mono', 'SF Mono', monospace;

  /* Spacing */
  --ds-space-xs:   4px;
  --ds-space-sm:   8px;
  --ds-space-md:   16px;
  --ds-space-lg:   24px;
  --ds-space-xl:   32px;
  --ds-space-2xl:  48px;
  --ds-space-3xl:  64px;
  --ds-space-4xl:  96px;

  /* Radius */
  --ds-radius-sm:  6px;
  --ds-radius-md:  12px;
  --ds-radius-lg:  16px;
  --ds-radius-xl:  24px;

  /* Shadows */
  --ds-shadow-sm:  0 2px 8px rgba(0, 0, 0, 0.3);
  --ds-shadow-md:  0 4px 16px rgba(0, 0, 0, 0.4);
  --ds-shadow-lg:  0 8px 32px rgba(0, 0, 0, 0.5);
  --ds-shadow-glow: 0 0 20px var(--ds-accent-glow);

  /* Transitions */
  --ds-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --ds-transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);

  /* Tier Colors */
  --ds-tier1:          #34D399;
  --ds-tier1-bg:       rgba(52, 211, 153, 0.12);
  --ds-tier2:          #38BDF8;
  --ds-tier2-bg:       rgba(56, 189, 248, 0.12);
  --ds-tier3:          #94A3B8;
  --ds-tier3-bg:       rgba(148, 163, 184, 0.08);

  /* Glassmorphism */
  --ds-glass-bg:      rgba(17, 24, 39, 0.7);
  --ds-glass-border:  rgba(56, 189, 248, 0.15);
  --ds-glass-blur:    12px;

  /* Cards */
  --ds-card-glass:        rgba(17, 24, 39, 0.6);
  --ds-card-glass-border: rgba(255, 255, 255, 0.06);
  --ds-shadow-card:       0 1px 3px rgba(0,0,0,0.3), 0 0 0 1px rgba(255,255,255,0.03);
  --ds-shadow-card-hover: 0 8px 25px rgba(0,0,0,0.4), 0 0 0 1px var(--ds-accent);

  /* Gradients */
  --ds-gradient-hero:  linear-gradient(135deg, #FBBF24 0%, #34D399 50%, #38BDF8 100%);
}

/* ── Light Theme Override ─────────────────────────────── */
[data-theme="light"] {
  --ds-bg-deep:      #E8ECF1;
  --ds-bg-surface:   #FFFFFF;
  --ds-bg-elevated:  #F1F5F9;
  --ds-bg-hover:     #E2E8F0;

  --ds-border:       #E2E8F0;
  --ds-border-light: #CBD5E1;

  --ds-text:         #0F172A;
  --ds-text-secondary: #475569;
  --ds-text-muted:   #64748B;

  --ds-shadow-sm:  0 1px 3px rgba(0, 0, 0, 0.08);
  --ds-shadow-md:  0 4px 12px rgba(0, 0, 0, 0.1);
  --ds-shadow-lg:  0 8px 24px rgba(0, 0, 0, 0.12);

  --ds-accent-glow:  rgba(56, 189, 248, 0.15);
  --ds-gold-glow:    rgba(251, 191, 36, 0.15);
  --ds-success-glow: rgba(52, 211, 153, 0.15);

  --ds-glass-bg:     rgba(255, 255, 255, 0.8);
  --ds-glass-border: rgba(56, 189, 248, 0.1);

  --ds-card-glass:        rgba(255, 255, 255, 0.8);
  --ds-card-glass-border: rgba(0, 0, 0, 0.08);
  --ds-shadow-card:       0 1px 3px rgba(0,0,0,0.08), 0 0 0 1px rgba(0,0,0,0.04);
  --ds-shadow-card-hover: 0 8px 25px rgba(0,0,0,0.12), 0 0 0 1px var(--ds-accent);

  --ds-tier1-bg:     rgba(52, 211, 153, 0.06);
  --ds-tier2-bg:     rgba(56, 189, 248, 0.06);
  --ds-tier3-bg:     rgba(148, 163, 184, 0.06);
}

/* Light theme glass cards */
[data-theme="light"] .glass-card {
  background: rgba(255, 255, 255, 0.8);
  border-color: var(--ds-border);
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

[data-theme="light"] .glass-card:hover {
  box-shadow: 0 4px 12px rgba(0,0,0,0.1), 0 0 0 1px var(--ds-accent);
}

/* Light theme gradient-text */
[data-theme="light"] .gradient-text {
  background: linear-gradient(135deg, #0284C7 0%, #059669 50%, #0284C7 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Light theme signal colors */
[data-theme="light"] .primaro-noise   { color: #64748B; }
[data-theme="light"] .primaro-pathway { color: #0284C7; }
[data-theme="light"] .primaro-signal  { color: #059669; }

/* ── Theme Toggle Button ──────────────────────────────── */
.theme-toggle-btn {
  background: var(--ds-bg-elevated);
  border: 1px solid var(--ds-border-light);
  border-radius: var(--ds-radius-sm);
  padding: 4px 8px;
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
  transition: background 0.2s ease, border-color 0.2s ease;
}
.theme-toggle-btn:hover {
  background: var(--ds-bg-hover);
  border-color: var(--ds-accent);
}

/* Dark mode (default): show SUN */
.theme-icon-light { display: inline; }
.theme-icon-dark  { display: none; }
/* Light mode: show MOON */
[data-theme="light"] .theme-icon-light { display: none; }
[data-theme="light"] .theme-icon-dark  { display: inline; }

/* ── Global Reset ──────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--ds-bg-deep);
  color: var(--ds-text);
  font-family: var(--ds-font-body);
  margin: 0;
  padding: 0;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ── Gradient Text ─────────────────────────────────────── */
.gradient-text {
  background: linear-gradient(135deg, #38BDF8 0%, #34D399 50%, #38BDF8 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── PRIMARO Brand ─────────────────────────────────────── */
.primaro-brand {
  font-family: var(--ds-font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.primaro-ai {
  color: var(--ds-cyan);
}

.caerus-ae {
  color: var(--ds-caerus-ae) !important;
  -webkit-text-fill-color: var(--ds-caerus-ae) !important;
}

/* ── Signal Colors ─────────────────────────────────────── */
.primaro-noise   { color: #94A3B8; }
.primaro-spark   { color: #FBBF24; }
.primaro-signal  { color: #34D399; }
.primaro-pathway { color: #38BDF8; }
.primaro-clarity { color: #E2E8F0; }

/* ── Glass Card ────────────────────────────────────────── */
.glass-card {
  background: rgba(17, 24, 39, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--ds-border-light);
  border-radius: var(--ds-radius-lg);
  padding: var(--ds-space-lg);
  transition: all var(--ds-transition);
}

.glass-card:hover {
  border-color: var(--ds-accent);
  box-shadow: var(--ds-shadow-glow), var(--ds-shadow-md);
  transform: translateY(-2px);
}

/* ── Buttons ───────────────────────────────────────────── */
.ds-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border: none;
  border-radius: var(--ds-radius-md);
  font-family: var(--ds-font-body);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--ds-transition);
  text-decoration: none;
}

.ds-btn-primary {
  background: transparent;
  color: var(--ds-cyan);
  border: 1px solid var(--ds-cyan);
}

.ds-btn-primary:hover {
  background: rgba(56, 189, 248, 0.1);
  transform: translateY(-1px);
}

.ds-btn-outline {
  background: transparent;
  color: var(--ds-cyan);
  border: 1px solid var(--ds-cyan);
}

.ds-btn-outline:hover {
  background: rgba(56, 189, 248, 0.1);
}

.ds-btn-lg {
  padding: 16px 32px;
  font-size: 17px;
  border-radius: var(--ds-radius-lg);
}

/* ── Form Elements ─────────────────────────────────────── */
input[type="text"],
input[type="email"],
input[type="url"],
input[type="number"],
textarea,
select {
  padding: 10px 14px;
  font-family: var(--ds-font-body);
  font-size: 14px;
  color: var(--ds-text);
  background: var(--ds-bg-elevated);
  border: 1px solid var(--ds-border-light);
  border-radius: var(--ds-radius-md);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  box-sizing: border-box;
  width: 100%;
}

input:focus, textarea:focus, select:focus {
  border-color: var(--ds-accent);
  box-shadow: 0 0 0 3px var(--ds-accent-glow);
}

input::placeholder, textarea::placeholder {
  color: var(--ds-text-muted);
  opacity: 0.6;
}

select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394A3B8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

textarea { resize: vertical; min-height: 80px; }

/* ── Section Titles ────────────────────────────────────── */
.section-title {
  font-family: var(--ds-font-body);
  font-size: 28px;
  font-weight: 700;
  color: var(--ds-text);
  margin-bottom: var(--ds-space-md);
  text-align: center;
}

.section-subtitle {
  font-family: var(--ds-font-body);
  font-size: 16px;
  color: var(--ds-text-secondary);
  line-height: 1.6;
  max-width: 600px;
}

/* ── Page Sections ─────────────────────────────────────── */
.page-section {
  position: relative;
  z-index: 1;
  padding: var(--ds-space-4xl) var(--ds-space-lg);
}

.page-section .section-inner {
  max-width: 1200px;
  margin: 0 auto;
}

/* ── Animated Grid Background ──────────────────────────── */
.animated-grid-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.animated-grid-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(56, 189, 248, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56, 189, 248, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  animation: grid-drift 20s linear infinite;
}

.animated-grid-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(56, 189, 248, 0.08) 0%, transparent 60%),
              radial-gradient(ellipse at 80% 50%, rgba(56, 189, 248, 0.05) 0%, transparent 40%);
}

/* ── Animation Utility Classes ─────────────────────────── */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

.animate-on-scroll.delay-1 { transition-delay: 0.1s; }
.animate-on-scroll.delay-2 { transition-delay: 0.2s; }
.animate-on-scroll.delay-3 { transition-delay: 0.3s; }
.animate-on-scroll.delay-4 { transition-delay: 0.4s; }

/* ── Keyframe Animations ───────────────────────────────── */
@keyframes pulse-live {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.5); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes grid-drift {
  from { transform: translate(0, 0); }
  to { transform: translate(60px, 60px); }
}

@keyframes glow-pulse {
  0%, 100% { box-shadow: 0 0 20px var(--ds-accent-glow); }
  50% { box-shadow: 0 0 40px var(--ds-accent-glow); }
}

/* ── Responsive ────────────────────────────────────────── */
@media (max-width: 768px) {
  .section-title { font-size: 20px; }
  .section-subtitle { font-size: 16px; }
  .ds-btn-lg { padding: 14px 24px; font-size: 15px; }
}