:root {
  /* Palette defined by Style Direction */
  --color-base: #1c1f24;
  --color-surface: #2a2d35;
  --color-accent: #10b981;
  --color-accent-hover: #059669;
  --color-text: #e5e7eb;
  --color-text-muted: #9ca3af;
  --color-border: rgba(229, 231, 235, 0.1);
  
  /* Typography */
  --font-body: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  
  /* Layout */
  --container-width: 1100px;
  --radius: 4px;
  --radius-pill: 9999px;
}

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

body {
  background-color: var(--color-base);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-wrap: anywhere;
  hyphens: auto;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius);
  object-fit: cover;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--color-accent-hover);
}

/* Typography */
h1, h2, h3 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 2.5rem);
}

h3, h4, h5, h6, .label, .number, th {
  font-family: var(--font-mono);
  font-weight: normal;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

h3 { font-size: 1.25rem; }
.label { font-size: 0.875rem; color: var(--color-text-muted); }

p { margin-bottom: 1.5rem; }

/* Layout & Containers */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.band {
  padding: 5rem 0;
  width: 100%;
}

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

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: transparent;
  transition: background-color 0.3s ease, border-bottom 0.3s ease;
  padding: 1.5rem 0;
  border-bottom: 1px solid transparent;
}

.site-header.scrolled {
  background-color: var(--color-base);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 0;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  font-family: var(--font-mono);
  font-weight: bold;
  font-size: 1.1rem;
  color: var(--color-text) !important;
  letter-spacing: -0.02em;
}

.main-nav {
  display: flex;
  gap: 2rem;
}

.main-nav a {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-text);
  text-transform: uppercase;
}

.main-nav a:hover, .main-nav a.active {
  color: var(--color-accent);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
}

/* Hero Section */
.hero {
  padding-top: 10rem;
  padding-bottom: 5rem;
  background: radial-gradient(circle at 50% 0%, rgba(16, 185, 129, 0.15) 0%, var(--color-base) 60%);
  text-align: center;
  border-bottom: 1px solid var(--color-border);
}

.hero h1 {
  margin: 0;
  max-width: 800px;
  margin: 0 auto;
}

/* Grid & Cards */
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; }

.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.card img {
  border-radius: 0;
  aspect-ratio: 4/3;
  border-bottom: 1px solid var(--color-border);
}

.card-content {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-accent);
  color: var(--color-base) !important;
  font-family: var(--font-mono);
  font-weight: 600;
  text-transform: uppercase;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-pill);
  border: none;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.2s ease;
  font-size: 0.875rem;
}

.btn:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-1px);
}

/* Tables */
.table-wrapper {
  overflow-x: auto;
  margin-bottom: 2rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

th, td {
  padding: 1rem;
  border-bottom: 1px solid var(--color-border);
}

th {
  background-color: var(--color-surface);
  color: var(--color-text-muted);
}

/* Pros & Cons List */
.pros-cons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.pro-list, .con-list {
  background-color: var(--color-surface);
  padding: 1.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.pro-list h3 { color: var(--color-accent); }
.con-list h3 { color: #f87171; }

ul {
  padding-left: 1.25rem;
  margin-bottom: 1.5rem;
}

li { margin-bottom: 0.5rem; }

/* Accordion */
.accordion {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 1rem;
  background-color: var(--color-surface);
}

.accordion-header {
  width: 100%;
  text-align: left;
  padding: 1.5rem;
  background: none;
  border: none;
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.accordion-header::after {
  content: '+';
  font-size: 1.2rem;
  color: var(--color-accent);
}

.accordion-header.active::after {
  content: '−';
}

.accordion-content {
  padding: 0 1.5rem;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.accordion-header.active + .accordion-content {
  padding: 0 1.5rem 1.5rem 1.5rem;
  max-height: 500px;
}

/* Split-screen Tool */
.tool-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
  color: var(--color-text-muted);
}

input, textarea, select {
  width: 100%;
  background-color: var(--color-base);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  font-family: var(--font-body);
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--color-accent);
}

.tool-preview {
  background-color: var(--color-base);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  white-space: pre-wrap;
  height: 200px;
  overflow-y: auto;
  margin-bottom: 1rem;
}

.tool-actions {
  display: flex;
  gap: 1rem;
}

/* Footer */
.site-footer {
  background-color: var(--color-base);
  border-top: 1px solid var(--color-border);
  padding: 4rem 0 2rem;
  margin-top: 4rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.footer-col h4 {
  color: var(--color-text);
  margin-bottom: 1rem;
}

.footer-col ul {
  list-style: none;
  padding: 0;
}

.footer-col li {
  margin-bottom: 0.5rem;
}

.footer-col a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.footer-col a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* Media Queries */
@media (max-width: 768px) {
  .menu-toggle { display: block; }
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--color-surface);
    flex-direction: column;
    padding: 1.5rem;
    border-bottom: 1px solid var(--color-border);
    gap: 1rem;
  }
  .main-nav.open { display: flex; }
  .hero { padding-top: 8rem; }
  .pros-cons { grid-template-columns: 1fr; }
  .tool-split { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
}

@media (prefers-reduced-motion: reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}