/* ==========================================================================
   Cristi Juverdeanu — juverdeanu.ro
   High-Performance Technical Architecture Portfolio & Systems Showcase
   Theme: Clean Engineering Light Canvas (#f8fafc)
   ========================================================================== */

:root {
  --bg-canvas: #f8fafc;
  --surface-base: #ffffff;
  --surface-elevated: #f1f5f9;
  --surface-highlight: #e2e8f0;
  --border-subtle: #e2e8f0;
  --border-strong: #cbd5e1;
  --accent-emerald: #059669;
  --accent-cyan: #0284c7;
  --accent-amber: #d97706;
  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-dim: #94a3b8;
}

/* Base resets & typography */
html {
  scroll-behavior: smooth;
  color-scheme: light;
  background-color: var(--bg-canvas);
  color: var(--text-secondary);
  font-family: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-canvas);
  color: var(--text-secondary);
  min-height: 100vh;
  overflow-x: hidden;
}

/* System monospace styling */
.font-mono,
code,
pre,
kbd,
.metric-num,
.sys-badge,
.sys-id {
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-feature-settings: "zero" 1, "tnum" 1;
}

/* Background Technical Grid (Light Mode) */
.bg-grid-pattern {
  background-image: 
    linear-gradient(to right, rgba(226, 232, 240, 0.8) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(226, 232, 240, 0.8) 1px, transparent 1px);
  background-size: 36px 36px;
}

.bg-dot-pattern {
  background-image: radial-gradient(rgba(203, 213, 225, 0.8) 1px, transparent 1px);
  background-size: 24px 24px;
}

/* Custom Scrollbar (Light Mode) */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 4px;
  border: 1px solid #f1f5f9;
}

::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

/* Glassmorphism & Surface Tokens (Light Mode) */
.glass-nav {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.card-surface {
  background-color: var(--surface-base);
  border: 1px solid var(--border-subtle);
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.04), 0 1px 2px -1px rgba(0, 0, 0, 0.04);
  transition: border-color 0.2s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.2s cubic-bezier(0.16, 1, 0.3, 1), transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.card-surface:hover {
  border-color: var(--border-strong);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -2px rgba(0, 0, 0, 0.06);
}

.card-surface-elevated {
  background-color: var(--surface-elevated);
  border: 1px solid var(--border-subtle);
}

/* Glowing accents */
.glow-emerald {
  box-shadow: 0 0 25px -5px rgba(5, 150, 105, 0.12);
}

.glow-cyan {
  box-shadow: 0 0 25px -5px rgba(2, 132, 199, 0.12);
}

.glow-amber {
  box-shadow: 0 0 25px -5px rgba(217, 119, 6, 0.12);
}


/* Accordion Smooth Collapse Animation */
.accordion-content {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.28s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  opacity: 0;
}

.accordion-content.is-open {
  grid-template-rows: 1fr;
  opacity: 1;
}

.accordion-inner {
  overflow: hidden;
}

.accordion-chevron {
  transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

.accordion-content.is-open + .accordion-trigger .accordion-chevron,
.accordion-item[data-open="true"] .accordion-chevron {
  transform: rotate(180deg);
}

/* Filter pills active states */
.filter-btn {
  transition: all 0.15s ease-in-out;
}

/* Zero layout shift for sticky anchors */
:target {
  scroll-margin-top: 5rem;
}

/* Code block highlight styling (Light Mode) */
.code-block {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 0.5rem;
  padding: 0.85rem 1rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.825rem;
  line-height: 1.5;
  color: #334155;
}

/* Natural Photo: Full Color, Vibrant, No Grayscale */
.portrait-natural {
  filter: none !important;
  -webkit-filter: none !important;
}

/* Print styles */
@media print {
  body {
    background: #fff;
    color: #000;
  }
  .no-print {
    display: none !important;
  }
}