/* 
  mepper.xyz - Monochromatic Design System & Swiss Typography
  Pure Monochromatic Precision // Zero Chromatic Noise
*/

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&family=Plus+Jakarta+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400;1,600&display=swap');

:root {
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  
  /* Light theme color tokens */
  --bg-primary: #ffffff;
  --bg-surface: #f4f4f5;
  --bg-subtle: #fafafa;
  --border-color: #e4e4e7;
  --border-strong: #09090b;
  --text-primary: #09090b;
  --text-muted: #71717a;
  --text-faint: #a1a1aa;

  --canvas-grid: rgba(9, 9, 11, 0.05);
  --canvas-axis: rgba(9, 9, 11, 0.35);
}

html.dark {
  /* Dark theme color tokens */
  --bg-primary: #09090b;
  --bg-surface: #18181b;
  --bg-subtle: #121215;
  --border-color: #27272a;
  --border-strong: #fafafa;
  --text-primary: #fafafa;
  --text-muted: #a1a1aa;
  --text-faint: #52525b;

  --canvas-grid: rgba(250, 250, 250, 0.06);
  --canvas-axis: rgba(250, 250, 250, 0.35);
}

/* Global resets & typography */
*, *::before, *::after {
  box-sizing: border-box;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  margin: 0;
  padding: 0;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.font-sans {
  font-family: var(--font-sans) !important;
}

.font-mono {
  font-family: var(--font-mono) !important;
}

/* Custom Minimalist Scrollbar */
::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 0px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Precise Hairline Borders */
.border-hairline {
  border-color: var(--border-color) !important;
}

.hairline-border {
  border: 1px solid var(--border-color);
}

.hairline-border-t {
  border-top: 1px solid var(--border-color);
}

.hairline-border-b {
  border-bottom: 1px solid var(--border-color);
}

.hairline-border-l {
  border-left: 1px solid var(--border-color);
}

.hairline-border-r {
  border-right: 1px solid var(--border-color);
}

/* Monochromatic Swiss Technical Badges */
.tech-badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: -0.01em;
  padding: 0.175rem 0.5rem;
  border: 1px solid var(--border-color);
  background-color: var(--bg-surface);
  color: var(--text-primary);
  border-radius: 0.25rem;
  transition: all 0.15s ease;
  user-select: none;
  text-decoration: none;
}

.tech-badge:hover {
  border-color: var(--text-primary);
}

/* Pulsing Status Dot */
.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: #22c55e;
  box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7);
  animation: pulse-ring 2.5s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse-ring {
  0% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7);
  }
  70% {
    transform: scale(1);
    box-shadow: 0 0 0 6px rgba(34, 197, 94, 0);
  }
  100% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(34, 197, 94, 0);
  }
}

/* Interactive Canvas Wrappers */
.canvas-wrapper {
  position: relative;
  width: 100%;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  overflow: hidden;
  touch-action: none;
}

.canvas-wrapper canvas {
  display: block;
  width: 100%;
  height: 100%;
}

/* Monospace Terminal Styling */
.tui-window {
  background: #000000;
  color: #fafafa;
  border: 1px solid #27272a;
  font-family: var(--font-mono);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
  border-radius: 0.375rem;
  overflow: hidden;
}

.tui-header {
  border-bottom: 1px solid #27272a;
  background: #09090b;
  padding: 0.5rem 0.75rem;
}

.tui-cursor {
  display: inline-block;
  width: 8px;
  height: 1.15em;
  background-color: currentColor;
  vertical-align: -0.15em;
  animation: cursor-blink 1s step-end infinite;
}

@keyframes cursor-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* Code Snippet Blocks */
.code-block {
  border: 1px solid var(--border-color);
  background: #09090b;
  color: #fafafa;
  border-radius: 0.375rem;
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
}

html:not(.dark) .code-block {
  background: #09090b;
  color: #fafafa;
  border-color: #27272a;
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0.875rem;
  background: #121215;
  border-bottom: 1px solid #27272a;
  font-size: 0.75rem;
  color: #a1a1aa;
}

.copy-btn.copied {
  color: #10b981 !important;
  border-color: #10b981 !important;
}

/* Callouts & Technical Notes */
.callout {
  border-left: 2px solid var(--border-strong);
  background: var(--bg-surface);
  padding: 0.875rem 1.125rem;
  border-radius: 0 0.375rem 0.375rem 0;
  margin: 1.25rem 0;
}

.callout.callout-note {
  border-left-color: var(--border-strong);
}

.callout.callout-warning {
  border-left-color: #eab308;
}

.callout.callout-tip {
  border-left-color: #10b981;
}

/* Technical Table Styling */
.tech-table {
  width: 100%;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  border-collapse: collapse;
  margin: 1.25rem 0;
  border: 1px solid var(--border-color);
  border-radius: 0.375rem;
  overflow: hidden;
}

.tech-table th {
  background: var(--bg-surface);
  color: var(--text-primary);
  text-align: left;
  padding: 0.625rem 0.875rem;
  border-bottom: 1px solid var(--border-color);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.tech-table td {
  padding: 0.625rem 0.875rem;
  border-bottom: 1px solid var(--border-color);
}

.tech-table tr:last-child td {
  border-bottom: none;
}

.tech-table tr:hover td {
  background: var(--bg-surface);
}

/* Math formula styling */
.math-inline {
  font-family: var(--font-mono);
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  padding: 0.1rem 0.35rem;
  border-radius: 0.2rem;
  font-size: 0.85em;
}

.math-block {
  font-family: var(--font-mono);
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  padding: 0.75rem 1rem;
  margin: 1rem 0;
  border-radius: 0.25rem;
  overflow-x: auto;
  font-size: 0.875rem;
  line-height: 1.5;
}

/* Carousel Animation & Navigation */
.carousel-slide {
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.carousel-slide.active {
  display: block;
}

.carousel-slide.inactive {
  display: none;
}

/* Print Styles */
@media print {
  nav, footer, .no-print, button {
    display: none !important;
  }
  body {
    background: #ffffff !important;
    color: #000000 !important;
  }
}