/* ==========================================================================
   lean-packages — Modern Minimalist Dark-First Developer Stylesheet
   ========================================================================== */

:root {
  /* Color Palette - Dark First */
  --bg-primary: #090d13;
  --bg-secondary: #0d1219;
  --bg-card: #131a24;
  --bg-card-hover: #17212e;
  --bg-terminal: #070a0e;
  --bg-input: #0a0f16;
  
  --border-subtle: #1c2635;
  --border-muted: #263345;
  --border-focus: #388bfd;
  
  --text-primary: #f0f6fc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-link: #58a6ff;
  
  /* Accent Colors */
  --accent-green: #3fb950;
  --accent-green-bg: rgba(63, 185, 80, 0.12);
  --accent-blue: #58a6ff;
  --accent-blue-bg: rgba(88, 166, 255, 0.12);
  --accent-yellow: #d29922;
  --accent-yellow-bg: rgba(210, 153, 34, 0.12);
  --accent-red: #f85149;
  --accent-red-bg: rgba(248, 81, 73, 0.12);
  
  /* Ecosystem Language Colors */
  --lang-php: #a29bfe;
  --lang-php-bg: rgba(162, 155, 254, 0.12);
  --lang-rust: #f39c12;
  --lang-rust-bg: rgba(243, 156, 18, 0.12);
  --lang-python: #60a5fa;
  --lang-python-bg: rgba(96, 165, 250, 0.12);
  --lang-js: #facc15;
  --lang-js-bg: rgba(250, 204, 21, 0.12);

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  --font-mono: ui-monospace, "JetBrains Mono", SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  
  /* Layout */
  --container-max: 1120px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

/* Reset & Base Setup */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  width: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-primary);
  background-image: 
    radial-gradient(ellipse 60% 50% at 50% -20%, rgba(88, 166, 255, 0.06), transparent),
    radial-gradient(circle at 100% 100%, rgba(63, 185, 80, 0.03), transparent);
  background-attachment: fixed;
  overflow-x: hidden;
  width: 100%;
}

img, svg {
  max-width: 100%;
}

/* Accessibility */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--accent-blue);
  color: #000;
  font-weight: 600;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  z-index: 9999;
  text-decoration: none;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 1rem;
}

:focus-visible {
  outline: 2px solid var(--accent-blue);
  outline-offset: 2px;
}

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

/* Typography Utilities */
.font-mono {
  font-family: var(--font-mono);
}

a {
  color: var(--text-link);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  text-decoration: underline;
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background-color: rgba(255, 255, 255, 0.06);
  padding: 0.15em 0.35em;
  border-radius: var(--radius-sm);
  color: #e2e8f0;
}

/* Header & Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(9, 13, 19, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.brand:hover {
  text-decoration: none;
}

.brand-logo {
  border-radius: 6px;
  object-fit: cover;
}

.brand-name {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
  font-family: var(--font-mono);
  letter-spacing: -0.02em;
}

.nav-list {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 1.5rem;
}

.nav-link {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: var(--text-primary);
  text-decoration: none;
}

.github-btn,
.devnull-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-muted);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
}

.github-btn:hover,
.devnull-btn:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: var(--text-muted);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  width: 36px;
  height: 36px;
  padding: 0;
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-muted);
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.nav-toggle:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: var(--text-muted);
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--accent-blue);
  outline-offset: 2px;
}

.hamburger-bar {
  display: block;
  width: 18px;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: 1px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
  transform-origin: center;
}

.nav-toggle.is-active .hamburger-bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle.is-active .hamburger-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-active .hamburger-bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.mobile-nav-drawer {
  display: none;
  background-color: rgba(9, 13, 19, 0.98);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.75rem 0 1rem;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.mobile-nav-drawer:not([hidden]) {
  display: block;
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0;
  margin: 0;
}

.mobile-nav-link {
  display: block;
  padding: 0.625rem 0.75rem;
  color: var(--text-secondary);
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link:focus-visible {
  color: var(--text-primary);
  background-color: rgba(255, 255, 255, 0.06);
  text-decoration: none;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 0.7rem 1.25rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.btn:hover {
  text-decoration: none;
}

.btn-primary {
  background-color: #238636;
  color: #ffffff;
  border-color: rgba(240, 246, 252, 0.1);
}

.btn-primary:hover {
  background-color: #2ea043;
}

.btn-secondary {
  background-color: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--border-muted);
}

.btn-secondary:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--text-muted);
}

/* Sections Common */
.section {
  padding: 5rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.section-header {
  margin-bottom: 3rem;
  max-width: 720px;
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent-blue);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  line-height: 1.25;
  margin-bottom: 0.75rem;
}

.section-subtitle {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Hero Section */
.hero-section {
  padding: 5.5rem 0 4.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.hero-container {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--accent-green);
  background-color: var(--accent-green-bg);
  border: 1px solid rgba(63, 185, 80, 0.25);
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  margin-bottom: 1.5rem;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent-green);
  box-shadow: 0 0 8px var(--accent-green);
}

.hero-title-wrapper {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 1.25rem;
}

.hero-title {
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 0;
}

.hero-janitor {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.hero-janitor-img {
  width: auto;
  max-width: 105px;
  height: auto;
  display: block;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.3));
}

.gradient-text {
  color: #e2e8f0;
  background: linear-gradient(135deg, #f0f6fc 30%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.1875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 540px;
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Terminal Visual Component */
.hero-terminal {
  width: 100%;
}

.terminal-window {
  background-color: var(--bg-terminal);
  border: 1px solid var(--border-muted);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.45);
  overflow: hidden;
}

.terminal-header {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 1rem;
  background-color: #0e131b;
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
  flex-wrap: wrap;
}

.terminal-dots {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot-red { background-color: #ff5f56; }
.dot-yellow { background-color: #ffbd2e; }
.dot-green { background-color: #27c93f; }

.terminal-tabs {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.terminal-tab {
  background-color: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.terminal-tab:hover {
  color: var(--text-primary);
  border-color: var(--border-muted);
  background-color: rgba(255, 255, 255, 0.08);
}

.terminal-tab.active {
  color: var(--text-primary);
  font-weight: 600;
}

/* Language-specific colors matching Ecosystem theme */
.terminal-tab[data-term-target="term-php"]:hover {
  color: var(--lang-php);
  border-color: rgba(162, 155, 254, 0.3);
  background-color: rgba(162, 155, 254, 0.08);
}

.terminal-tab[data-term-target="term-php"].active {
  color: var(--lang-php);
  background-color: var(--lang-php-bg);
  border-color: rgba(162, 155, 254, 0.4);
}

.terminal-tab[data-term-target="term-rust"]:hover {
  color: var(--lang-rust);
  border-color: rgba(243, 156, 18, 0.3);
  background-color: rgba(243, 156, 18, 0.08);
}

.terminal-tab[data-term-target="term-rust"].active {
  color: var(--lang-rust);
  background-color: var(--lang-rust-bg);
  border-color: rgba(243, 156, 18, 0.4);
}

.terminal-tab[data-term-target="term-python"]:hover {
  color: var(--lang-python);
  border-color: rgba(96, 165, 250, 0.3);
  background-color: rgba(96, 165, 250, 0.08);
}

.terminal-tab[data-term-target="term-python"].active {
  color: var(--lang-python);
  background-color: var(--lang-python-bg);
  border-color: rgba(96, 165, 250, 0.4);
}

.terminal-tab[data-term-target="term-javascript"]:hover {
  color: var(--lang-js);
  border-color: rgba(250, 204, 21, 0.3);
  background-color: rgba(250, 204, 21, 0.08);
}

.terminal-tab[data-term-target="term-javascript"].active {
  color: var(--lang-js);
  background-color: var(--lang-js-bg);
  border-color: rgba(250, 204, 21, 0.4);
}

.terminal-panel {
  display: none;
}

.terminal-panel.active {
  display: block;
}

.terminal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  background-color: #0e131b;
  padding: 0.5rem 1.25rem 0.6rem;
  border-top: 1px solid var(--border-subtle);
}

.terminal-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.terminal-body {
  padding: 1.25rem;
  font-size: 0.84rem;
  line-height: 1.65;
  color: #cbd5e1;
}

.terminal-line {
  margin-bottom: 0.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.t-prompt {
  color: var(--accent-green);
  font-weight: 700;
  user-select: none;
}

.t-cmd {
  color: #f8fafc;
  font-weight: 600;
}

.t-flag {
  color: var(--accent-blue);
}

.t-muted {
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.t-warn {
  color: var(--accent-yellow);
  font-weight: 500;
}

.t-success {
  color: var(--accent-green);
  margin-top: 0.5rem;
  font-weight: 600;
}

.t-stat {
  color: #ffffff;
  background: rgba(63, 185, 80, 0.15);
  padding: 0.1rem 0.35rem;
  border-radius: var(--radius-sm);
}

.terminal-diff {
  padding-left: 0.75rem;
  border-left: 2px solid var(--border-muted);
  margin: 0.4rem 0 0.6rem 0.25rem;
}

.diff-item {
  color: var(--text-muted);
  font-size: 0.8rem;
}

.diff-remove {
  color: var(--accent-red);
}

.t-cursor {
  animation: blink 1s step-end infinite;
  color: var(--accent-green);
  font-weight: 700;
}

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

/* Ecosystem Grid */
.ecosystem-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}

.eco-card {
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.eco-card:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--border-muted);
  transform: translateY(-2px);
  text-decoration: none;
}

.eco-icon-wrap {
  width: fit-content;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.php-theme { background-color: var(--lang-php-bg); color: var(--lang-php); border: 1px solid rgba(162, 155, 254, 0.3); }
.rust-theme { background-color: var(--lang-rust-bg); color: var(--lang-rust); border: 1px solid rgba(243, 156, 18, 0.3); }
.python-theme { background-color: var(--lang-python-bg); color: var(--lang-python); border: 1px solid rgba(96, 165, 250, 0.3); }
.js-theme { background-color: var(--lang-js-bg); color: var(--lang-js); border: 1px solid rgba(250, 204, 21, 0.3); }

.eco-content {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.eco-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
}

.eco-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 1rem;
  flex-grow: 1;
}

.eco-target {
  font-size: 0.75rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-subtle);
  padding-top: 0.75rem;
  margin-top: auto;
}

/* How It Works Section */
.workflow-flow {
  display: flex;
  flex-direction: column;
  width: 100%;
  margin: 0;
}

.workflow-step {
  width: 100%;
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  padding: 1.75rem 2rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.workflow-step:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--border-muted);
  transform: translateY(-2px);
}

.workflow-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(88, 166, 255, 0.08);
  border: 1px solid rgba(88, 166, 255, 0.25);
  border-radius: var(--radius-sm);
  color: var(--accent-blue);
}

.workflow-content {
  flex-grow: 1;
}

.workflow-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
  letter-spacing: -0.01em;
}

.workflow-desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 0;
}

.workflow-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 0;
  color: var(--accent-blue);
  opacity: 0.75;
}

.workflow-arrow svg {
  display: block;
}

/* Philosophy Section */
.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.pillar-card {
  padding: 1.75rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

.pillar-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-card);
  border: 1px solid var(--border-muted);
  border-radius: var(--radius-sm);
  color: var(--accent-blue);
  margin-bottom: 1.25rem;
}

.pillar-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.65rem;
}

.pillar-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Projects Section */
.projects-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.project-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-muted);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition-fast);
}

.project-card:hover {
  border-color: #3b4d63;
}

.project-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.project-meta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.lang-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
}

.lang-php { background-color: var(--lang-php-bg); color: var(--lang-php); border: 1px solid rgba(162, 155, 254, 0.3); }
.lang-rust { background-color: var(--lang-rust-bg); color: var(--lang-rust); border: 1px solid rgba(243, 156, 18, 0.3); }
.lang-python { background-color: var(--lang-python-bg); color: var(--lang-python); border: 1px solid rgba(96, 165, 250, 0.3); }
.lang-js { background-color: var(--lang-js-bg); color: var(--lang-js); border: 1px solid rgba(250, 204, 21, 0.3); }

.version-badge {
  font-size: 0.75rem;
  color: var(--text-secondary);
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.repo-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--text-muted);
  font-size: 0.8125rem;
  font-family: var(--font-mono);
  text-decoration: none;
}

.repo-link:hover {
  color: var(--accent-blue);
  text-decoration: none;
}

.project-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.6rem;
  font-family: var(--font-mono);
}

.project-description {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

/* Install Box & Tabs */
.install-container {
  background-color: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.install-tabs {
  display: flex;
  background-color: #0b1017;
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.25rem 0.25rem 0;
  gap: 0.25rem;
}

.tab-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.35rem 0.65rem;
  cursor: pointer;
  border-top-left-radius: var(--radius-sm);
  border-top-right-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.tab-btn:hover {
  color: var(--text-primary);
}

.tab-btn.active {
  color: var(--accent-blue);
  background-color: var(--bg-input);
  border-bottom: 2px solid var(--accent-blue);
  font-weight: 600;
}

.install-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  gap: 0.75rem;
}

.install-code {
  font-size: 0.8125rem;
  color: #e2e8f0;
  background: none;
  padding: 0;
  white-space: nowrap;
  overflow-x: auto;
  scrollbar-width: thin;
}

.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-muted);
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.copy-btn:hover {
  background-color: rgba(255, 255, 255, 0.12);
  color: var(--text-primary);
  border-color: var(--text-muted);
}

.copy-btn.copied {
  background-color: var(--accent-green-bg);
  border-color: var(--accent-green);
  color: var(--accent-green);
}

/* Companion Tools */
.companion-tools {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
}

.companion-header {
  margin-bottom: 1.25rem;
}

.companion-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.companion-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.companion-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.companion-card {
  display: block;
  padding: 1.1rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.companion-card:hover {
  border-color: var(--border-muted);
  background-color: var(--bg-card-hover);
  text-decoration: none;
}

.companion-card-header {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 0.55rem;
  margin-bottom: 0.4rem;
}

.companion-name {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--accent-blue);
}

.companion-text {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.45;
}

/* FAQ Section */
.faq-section {
  padding: 5rem 0;
  border-top: 1px solid var(--border-subtle);
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  width: 100%;
}

.faq-item {
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.75rem 2rem;
  transition: all var(--transition-fast);
}

.faq-item:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--border-muted);
  transform: translateY(-2px);
}

.faq-question {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.65rem;
  letter-spacing: -0.01em;
}

.faq-answer {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.faq-answer p:last-child {
  margin-bottom: 0;
}

.faq-answer code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  color: var(--accent-blue);
  background-color: rgba(88, 166, 255, 0.08);
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
}

.faq-answer a {
  color: var(--accent-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.faq-answer a:hover {
  color: var(--text-primary);
}

/* Callout Join Section */
.join-section {
  padding: 4rem 0;
}

.callout-card {
  background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg-secondary) 100%);
  border: 1px solid var(--border-muted);
  border-radius: var(--radius-lg);
  padding: 3rem 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.callout-title {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.callout-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 620px;
  line-height: 1.6;
}

/* Footer */
.site-footer {
  background-color: #06090e;
  border-top: 1px solid var(--border-subtle);
  padding: 2.5rem 0;
  margin-top: auto;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-copy {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.footer-copy a {
  color: var(--text-secondary);
}

.footer-credit {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background-color: #1f2937;
  color: #f3f4f6;
  border: 1px solid #374151;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-family: var(--font-mono);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 1000;
}

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

/* Responsive Breakpoints */
@media (max-width: 900px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  
  .hero-title {
    font-size: 2.75rem;
  }

  .hero-janitor-img {
    max-width: 85px;
  }

  .projects-list {
    grid-template-columns: 1fr;
  }

  .callout-card {
    flex-direction: column;
    align-items: flex-start;
    padding: 2.25rem 2rem;
  }
}

@media (max-width: 768px) {
  .header-right {
    gap: 0.75rem;
  }

  .site-header .nav-list {
    gap: 0.75rem;
  }

  .nav-link:not(.github-btn):not(.devnull-btn) {
    display: none;
  }

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

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

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

@media (max-width: 640px) {
  .container {
    padding: 0 1.25rem;
  }

  .header-right {
    gap: 0.5rem;
  }

  .site-header .nav-list {
    gap: 0.5rem;
  }

  .hero-section {
    padding: 4rem 0 3.5rem;
  }

  .hero-title-wrapper {
    gap: 1rem;
  }

  .hero-title {
    font-size: 2.125rem;
  }

  .hero-janitor-img {
    max-width: 68px;
  }

  .hero-subtitle {
    font-size: 1.0625rem;
    margin-bottom: 1.75rem;
  }

  .section {
    padding: 3.5rem 0;
  }

  .section-header {
    margin-bottom: 2rem;
  }

  .section-title {
    font-size: 1.625rem;
  }

  .section-subtitle {
    font-size: 0.95rem;
  }

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

  .philosophy-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .workflow-step {
    padding: 1.25rem 1.5rem;
    gap: 1rem;
  }

  .workflow-icon {
    width: 40px;
    height: 40px;
  }

  .project-card {
    padding: 1.25rem;
  }

  .project-card-header {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .companion-tools {
    padding: 1.25rem;
  }

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

  .faq-item {
    padding: 1.25rem 1.25rem;
  }

  .faq-question {
    font-size: 1.05rem;
  }

  .callout-card {
    padding: 1.75rem 1.25rem;
    gap: 1.5rem;
  }

  .callout-title {
    font-size: 1.35rem;
  }

  .callout-action,
  .callout-action .btn {
    width: 100%;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }

  .hero-title-wrapper {
    gap: 0.75rem;
  }

  .hero-title {
    font-size: 1.75rem;
  }

  .hero-janitor-img {
    max-width: 54px;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
    align-items: stretch;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .terminal-header {
    padding: 0.5rem 0.75rem;
    gap: 0.5rem;
  }

  .terminal-tabs {
    gap: 0.25rem;
  }

  .terminal-tab {
    padding: 0.2rem 0.45rem;
    font-size: 0.7rem;
  }

  .terminal-body {
    padding: 0.875rem 0.75rem;
    font-size: 0.75rem;
    line-height: 1.5;
  }

  .workflow-step {
    flex-direction: column;
    align-items: flex-start;
    padding: 1.25rem 1rem;
    gap: 0.75rem;
  }

  .workflow-icon {
    width: 36px;
    height: 36px;
  }

  .workflow-title {
    font-size: 1.1rem;
  }

  .install-box {
    padding: 0.5rem 0.75rem;
    gap: 0.5rem;
  }

  .install-code {
    font-size: 0.75rem;
  }

  .copy-btn {
    font-size: 0.7rem;
    padding: 0.25rem 0.5rem;
  }

  .faq-item {
    padding: 1rem;
  }

  .faq-question {
    font-size: 0.95rem;
  }

  .faq-answer {
    font-size: 0.875rem;
  }

  .toast {
    left: 1rem;
    right: 1rem;
    bottom: 1rem;
    text-align: center;
  }
}

@media (max-width: 380px) {
  .github-btn span,
  .devnull-btn span {
    display: none;
  }

  .github-btn,
  .devnull-btn {
    padding: 0.35rem 0.5rem;
  }

  .brand-name {
    font-size: 0.95rem;
  }

  .hero-title {
    font-size: 1.55rem;
  }

  .hero-janitor-img {
    max-width: 46px;
  }
}