/* Antigravity Design System — Alabaster Monograph (Light & Obsidian Dark) */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600;700&family=Plus+Jakarta+Sans:wght@500;600;700;800&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&display=swap');

:root {
  --font-display: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Pure Light Mode Tokens (Alabaster & Crisp Zinc) */
  --bg-canvas: #FBFBFA;
  --bg-surface: #FFFFFF;
  --bg-surface-subtle: #F7F7F5;
  --bg-surface-inset: #F0F0EC;
  --text-primary: #18181B;
  --text-secondary: #3F3F46;
  --text-muted: #71717A;
  --border-subtle: #E4E4E7;
  --border-strong: #D4D4D8;
  --accent-primary: #1A146B;
  --accent-primary-light: #EEF2FF;
  --accent-gold: #8B7355;
  --nav-blur-bg: rgba(251, 251, 250, 0.92);
  --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.05), 0 4px 12px rgba(0, 0, 0, 0.02);
  --card-hover-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

/* Neutralize any dark mode */
html.dark {
  --bg-canvas: #FBFBFA;
  --bg-surface: #FFFFFF;
  --bg-surface-subtle: #F7F7F5;
  --bg-surface-inset: #F0F0EC;
  --text-primary: #18181B;
  --text-secondary: #3F3F46;
  --text-muted: #71717A;
  --border-subtle: #E4E4E7;
  --border-strong: #D4D4D8;
  --accent-primary: #1A146B;
  --accent-primary-light: #EEF2FF;
  --accent-gold: #8B7355;
  --nav-blur-bg: rgba(251, 251, 250, 0.92);
  --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.05), 0 4px 12px rgba(0, 0, 0, 0.02);
  --card-hover-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

/* Base resets & typography */
* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  transition: background-color 0.25s ease, color 0.25s ease;
  overflow-x: hidden;
}

h1, h2, h3, h4, .font-display {
  font-family: var(--font-display);
}

code, pre, .font-mono, [data-mono] {
  font-family: var(--font-mono);
}

/* Custom scrollbars */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border-subtle);
  border-radius: 9999px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--border-strong);
}

/* Glassmorphism Navigation */
.header-nav-glass {
  background-color: var(--nav-blur-bg);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--border-subtle);
}

/* Card & Surface styles */
.monograph-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 0.75rem;
  box-shadow: var(--card-shadow);
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), 
              border-color 0.2s ease, 
              box-shadow 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.monograph-card:hover {
  border-color: var(--border-strong);
  box-shadow: var(--card-hover-shadow);
}

.monograph-card-subtle {
  background-color: var(--bg-surface-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: 0.75rem;
}

/* Capsule pills */
.nav-pill-active {
  background-color: var(--bg-surface) !important;
  color: var(--text-primary) !important;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  border: 1px solid var(--border-subtle);
}

/* Toast alert notification */
#toast-notification {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 100;
  transform: translateY(150%);
  opacity: 0;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
}

#toast-notification.show {
  transform: translateY(0);
  opacity: 1;
}

/* Interactive Modal */
.modal-backdrop {
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

/* Pulse beacon */
@keyframes beacon-pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 0.3; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.beacon-dot {
  animation: beacon-pulse 2.2s infinite ease-in-out;
}

/* Responsive tweaks */
@media (max-width: 640px) {
  .headline-responsive {
    font-size: 2.15rem !important;
    line-height: 1.15 !important;
  }
}

/* Career Timeline Progression */
.timeline-step {
  position: relative;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.timeline-step:hover {
  transform: translateY(-2px);
}

.timeline-arrow-connector {
  display: flex;
  align-items: center;
  justify-content: center;
  color: #1A146B;
}

/* Skill Stack Flow styling */
.skill-flow-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.85rem;
  background-color: #FFFFFF;
  border: 1px solid #E4E4E7;
  border-radius: 9999px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: #27272A;
  box-shadow: 0 1px 2px rgba(0,0,0,0.03);
  transition: all 0.2s ease;
}

.skill-flow-chip:hover {
  border-color: #312E81;
  color: #1A146B;
  background-color: #EEF2FF;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(49, 46, 129, 0.08);
}

.skill-card-flow {
  background: #FFFFFF;
  border: 1px solid #E4E4E7;
  border-radius: 0.85rem;
  padding: 1.25rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
  transition: all 0.2s ease;
}

.skill-card-flow:hover {
  border-color: #C7D2FE;
  box-shadow: 0 6px 18px rgba(49, 46, 129, 0.06);
  transform: translateY(-2px);
}