/* 
  Decoder Design System
  Fonts: Self-hosted via ../fonts/ (shared with parent site)
*/

/* ─── Fonts ─── */

@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/dm-sans-400.woff2') format('woff2');
}

@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../fonts/dm-sans-500.woff2') format('woff2');
}

@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../fonts/dm-sans-600.woff2') format('woff2');
}

@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/dm-sans-700.woff2') format('woff2');
}

@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/jetbrains-mono-400.woff2') format('woff2');
}

@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../fonts/jetbrains-mono-500.woff2') format('woff2');
}

@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../fonts/jetbrains-mono-600.woff2') format('woff2');
}

:root {
  /* Colors */
  --bg-primary: #0F1112;
  --bg-secondary: #111314;
  --bg-tertiary: #161819;
  --bg-card: #1A1C1E;

  --amber-accent: #F6A623;
  --amber-10: rgba(246, 166, 35, 0.1);
  --amber-20: rgba(246, 166, 35, 0.2);
  --amber-30: rgba(246, 166, 35, 0.3);
  --amber-400: #FBBF24;

  --gray-50: #F9FAFB;
  --gray-100: #E5E7EB;
  --gray-200: #D1D5DB;
  --gray-300: #9CA3AF;
  --gray-400: #6B7280;
  --gray-500: #4B5563;
  --gray-600: #374151;

  --border-subtle: rgba(255, 255, 255, 0.06);

  /* Typography */
  --font-sans: 'DM Sans', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Spacing */
  --max-w-6xl: 72rem;
}

/* ─── Base Reset ─── */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-primary);
  color: var(--gray-100);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}

a {
  text-decoration: none;
  color: inherit;
}

button {
  border: none;
  background: none;
  font-family: inherit;
  cursor: pointer;
}

::selection {
  background-color: var(--amber-dim);
  color: var(--amber-accent);
}

/* ─── Layout ─── */

.container {
  width: 100%;
  max-width: var(--max-w-6xl);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.flex-wrap {
  flex-wrap: wrap;
}

.inline-flex {
  display: inline-flex;
}

.items-center {
  align-items: center;
}

.items-start {
  align-items: flex-start;
}

.justify-between {
  justify-content: space-between;
}

.justify-center {
  justify-content: center;
}

.grid {
  display: grid;
}

.grid-cols-1 {
  grid-template-columns: 1fr;
}

.gap-2 {
  gap: 0.5rem;
}

.gap-3 {
  gap: 0.75rem;
}

.gap-4 {
  gap: 1rem;
}

.gap-6 {
  gap: 1.5rem;
}

.gap-x-6 {
  column-gap: 1.5rem;
}

.gap-y-2 {
  row-gap: 0.5rem;
}

/* ─── Responsive ─── */

@media (min-width: 768px) {
  .md-flex {
    display: flex;
  }

  .md-hidden {
    display: none;
  }

  .md-flex-row {
    flex-direction: row;
  }

  .md-grid-cols-2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .md-grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .md-py-32 {
    padding-top: 8rem;
    padding-bottom: 8rem;
  }

  .md-py-28 {
    padding-top: 7rem;
    padding-bottom: 7rem;
  }

  .md-text-4xl {
    font-size: 2.25rem;
  }

  .md-text-5xl {
    font-size: 3rem;
  }

  .md-gap-16 {
    gap: 4rem;
  }
}

@media (min-width: 1024px) {
  .lg-text-6xl {
    font-size: 3.75rem;
  }

  .lg-grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ─── Display & Position ─── */

.hidden {
  display: none;
}

.block {
  display: block;
}

.relative {
  position: relative;
}

.absolute {
  position: absolute;
}

.fixed {
  position: fixed;
}

.sticky {
  position: sticky;
}

.top-0 {
  top: 0;
}

.left-0 {
  left: 0;
}

.right-0 {
  right: 0;
}

.bottom-8 {
  bottom: 2rem;
}

.left-1\/2 {
  left: 50%;
}

.-translate-x-1\/2 {
  transform: translateX(-50%);
}

.z-50 {
  z-index: 50;
}

/* ─── Sizing ─── */

.w-full {
  width: 100%;
}

.h-full {
  height: 100%;
}

.h-14 {
  height: 3.5rem;
}

.min-h-screen {
  min-height: 100vh;
}

.max-w-2xl {
  max-width: 42rem;
}

.max-w-3xl {
  max-width: 48rem;
}

.max-w-6xl {
  max-width: 72rem;
}

.w-1\.5 {
  width: 0.375rem;
}

.h-1\.5 {
  height: 0.375rem;
}

.w-2 {
  width: 0.5rem;
}

.h-2 {
  height: 0.5rem;
}

.w-3 {
  width: 0.75rem;
}

.h-3 {
  height: 0.75rem;
}

.w-4 {
  width: 1rem;
}

.h-4 {
  height: 1rem;
}

.w-5 {
  width: 1.25rem;
}

.h-5 {
  height: 1.25rem;
}

.w-6 {
  width: 1.5rem;
}

.h-6 {
  height: 1.5rem;
}

.w-10 {
  width: 2.5rem;
}

.h-10 {
  height: 2.5rem;
}

.w-12 {
  width: 3rem;
}

.h-12 {
  height: 3rem;
}

/* ─── Spacing ─── */

.p-4 {
  padding: 1rem;
}

.p-6 {
  padding: 1.5rem;
}

.p-8 {
  padding: 2rem;
}

.px-2 {
  padding-left: 0.5rem;
  padding-right: 0.5rem;
}

.px-3 {
  padding-left: 0.75rem;
  padding-right: 0.75rem;
}

.px-4 {
  padding-left: 1rem;
  padding-right: 1rem;
}

.px-5 {
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

.px-6 {
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.py-1 {
  padding-top: 0.25rem;
  padding-bottom: 0.25rem;
}

.py-1\.5 {
  padding-top: 0.375rem;
  padding-bottom: 0.375rem;
}

.py-2 {
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
}

.py-2\.5 {
  padding-top: 0.625rem;
  padding-bottom: 0.625rem;
}

.py-3 {
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
}

.py-12 {
  padding-top: 3rem;
  padding-bottom: 3rem;
}

.py-20 {
  padding-top: 5rem;
  padding-bottom: 5rem;
}

.py-24 {
  padding-top: 6rem;
  padding-bottom: 6rem;
}

.pt-14 {
  padding-top: 3.5rem;
}

.pl-4 {
  padding-left: 1rem;
}

.m-0 {
  margin: 0;
}

.mx-auto {
  margin-left: auto;
  margin-right: auto;
}

.mb-2 {
  margin-bottom: 0.5rem;
}

.mb-4 {
  margin-bottom: 1rem;
}

.mb-6 {
  margin-bottom: 1.5rem;
}

.mb-8 {
  margin-bottom: 2rem;
}

.mb-12 {
  margin-bottom: 3rem;
}

.mt-1 {
  margin-top: 0.25rem;
}

.mt-4 {
  margin-top: 1rem;
}

.ml-2 {
  margin-left: 0.5rem;
}

.ml-auto {
  margin-left: auto;
}

/* ─── Typography ─── */

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

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

.font-medium {
  font-weight: 500;
}

.font-semibold {
  font-weight: 600;
}

.font-bold {
  font-weight: 700;
}

.text-xs {
  font-size: 0.75rem;
  line-height: 1rem;
}

.text-sm {
  font-size: 0.875rem;
  line-height: 1.25rem;
}

.text-base {
  font-size: 1rem;
  line-height: 1.5rem;
}

.text-lg {
  font-size: 1.125rem;
  line-height: 1.75rem;
}

.text-xl {
  font-size: 1.25rem;
  line-height: 1.75rem;
}

.text-3xl {
  font-size: 1.875rem;
  line-height: 2.25rem;
}

.text-4xl {
  font-size: 2.25rem;
  line-height: 2.5rem;
}

.text-center {
  text-align: center;
}

.uppercase {
  text-transform: uppercase;
}

.tracking-tight {
  letter-spacing: -0.025em;
}

.tracking-wider {
  letter-spacing: 0.05em;
}

.leading-tight {
  line-height: 1.25;
}

.leading-relaxed {
  line-height: 1.625;
}

.leading-hero {
  line-height: 1.1;
}

.text-balance {
  text-wrap: balance;
}

/* ─── Colors ─── */

.text-gray-50 {
  color: var(--gray-50);
}

.text-gray-100 {
  color: var(--gray-100);
}

.text-gray-200 {
  color: var(--gray-200);
}

.text-gray-300 {
  color: var(--gray-300);
}

.text-gray-400 {
  color: var(--gray-400);
}

.text-gray-500 {
  color: var(--gray-500);
}

.text-gray-600 {
  color: var(--gray-600);
}

.text-amber-accent {
  color: var(--amber-accent);
}

.text-bg-primary {
  color: var(--bg-primary);
}

/* ─── Backgrounds ─── */

.bg-bg-primary {
  background-color: var(--bg-primary);
}

.bg-bg-primary\/80 {
  background-color: rgba(15, 17, 18, 0.8);
}

.bg-bg-secondary {
  background-color: var(--bg-secondary);
}

.bg-bg-tertiary {
  background-color: var(--bg-tertiary);
}

.bg-bg-card {
  background-color: var(--bg-card);
}

.bg-amber-accent {
  background-color: var(--amber-accent);
}

.bg-amber-accent\/10 {
  background-color: var(--amber-10);
}

.bg-amber-accent\/20 {
  background-color: var(--amber-20);
}

.bg-amber-accent\/5 {
  background-color: rgba(246, 166, 35, 0.05);
}

.bg-red-500\/50 {
  background-color: rgba(239, 68, 68, 0.5);
}

.bg-yellow-500\/50 {
  background-color: rgba(234, 179, 8, 0.5);
}

.bg-green-500\/50 {
  background-color: rgba(34, 197, 94, 0.5);
}

.bg-gray-600 {
  background-color: var(--gray-600);
}

/* ─── Borders ─── */

.border {
  border-style: solid;
  border-width: 1px;
}

.border-b {
  border-bottom-width: 1px;
}

.border-t {
  border-top-width: 1px;
}

.border-l-2 {
  border-left-width: 2px;
}

.border-subtle {
  border-color: var(--border-subtle);
}

.border-amber-accent\/20 {
  border-color: var(--amber-20);
}

.border-amber-accent\/30 {
  border-color: var(--amber-30);
}

.border-gray-600 {
  border-color: var(--gray-600);
}

.rounded {
  border-radius: 0.25rem;
}

.rounded-lg {
  border-radius: 0.5rem;
}

.rounded-full {
  border-radius: 9999px;
}

/* ─── Effects ─── */

.backdrop-blur-md {
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.transition-colors {
  transition-property: color, background-color, border-color, text-decoration-color, fill, stroke;
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
  transition-duration: 150ms;
}

.opacity-50 {
  opacity: 0.5;
}

.opacity-60 {
  opacity: 0.6;
}

.opacity-70 {
  opacity: 0.7;
}

.opacity-80 {
  opacity: 0.8;
}

.overflow-hidden {
  overflow: hidden;
}

.resize-none {
  resize: none;
}

.shrink-0 {
  flex-shrink: 0;
}

.focus\:outline-none:focus {
  outline: 2px solid transparent;
  outline-offset: 2px;
}

/* ─── Hover States ─── */

.hover\:text-amber-accent:hover {
  color: var(--amber-accent);
}

.hover\:bg-amber-400:hover {
  background-color: var(--amber-400);
}

.hover\:bg-bg-tertiary:hover {
  background-color: var(--bg-tertiary);
}

.hover\:bg-amber-accent\/10:hover {
  background-color: var(--amber-10);
}

.hover\:border-gray-500:hover {
  border-color: var(--gray-500);
}

.hover\:border-gray-600:hover {
  border-color: var(--gray-600);
}

/* ─── Custom Components ─── */

.grid-bg {
  background-image:
    linear-gradient(rgba(246, 166, 35, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(246, 166, 35, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
}

.diagram-box {
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: linear-gradient(180deg, rgba(26, 28, 30, 0.6) 0%, rgba(22, 24, 25, 0.4) 100%);
}

.glow-green {
  box-shadow: 0 0 6px rgba(34, 197, 94, 0.4);
}

/* ─── Animations ─── */

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: .5;
  }
}

.animate-pulse-slow {
  animation: pulse 3s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes bounce {

  0%,
  100% {
    transform: translateY(-25%);
    animation-timing-function: cubic-bezier(0.8, 0, 1, 1);
  }

  50% {
    transform: none;
    animation-timing-function: cubic-bezier(0, 0, 0.2, 1);
  }
}

.animate-bounce {
  animation: bounce 1s infinite;
}

/* ─── Form Elements ─── */

input[type="checkbox"] {
  appearance: none;
  width: 1rem;
  height: 1rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--gray-600);
  border-radius: 0.125rem;
  display: inline-block;
  vertical-align: sub;
  position: relative;
}

input[type="checkbox"]:checked {
  background-color: var(--amber-accent);
  border-color: var(--amber-accent);
}