/* infraguide.org – minimal, technical */

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

:root {
  --color-bg:      #FFFFFF;
  --color-surface: #FAFAFA;
  --color-text:    #111111;
  --color-accent:  #2B6CB0;
  --color-accent-dark: #1E4E8C;
  --color-accent-tint: #EBF4FF;
  --color-muted:   #6B7280;
  --color-border:  #E5E7EB;
  --color-openstack: #DC2626;
  --color-openstack-tint: #FEF2F2;
  --color-ceph: #0E7490;
  --color-ceph-tint: #ECFEFF;
  --font:          "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono:     ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --max-width:     960px;
  --radius:        10px;
}

html {
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  font-family: var(--font);
  -webkit-text-size-adjust: 100%;
}

body {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.5rem 1.25rem 4rem;
}

/* Header */

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1.25rem;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--color-border);
}

.site-title {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.site-logo {
  height: 40px;
  width: auto;
  display: block;
}

.header-nav {
  display: flex;
  gap: 1.5rem;
}

.header-nav a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-muted);
  text-decoration: none;
}

.header-nav a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

/* Breadcrumb */

.breadcrumb {
  font-size: 0.8rem;
  color: var(--color-muted);
  margin-bottom: 2rem;
  margin-top: -1.5rem;
}

.breadcrumb a {
  color: var(--color-muted);
}

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

.breadcrumb-sep {
  margin: 0 0.4rem;
  color: var(--color-border);
}

.breadcrumb-current {
  color: var(--color-text);
}

/* Main */

main {
  margin-bottom: 4rem;
}

/* Typography */

h1 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

h2 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--color-text);
}

p {
  margin-bottom: 1rem;
  color: var(--color-muted);
}

ul {
  list-style: none;
  margin-bottom: 1rem;
  color: var(--color-muted);
}

li {
  position: relative;
  padding-left: 1.1rem;
  margin-bottom: 0.4rem;
}

li::before {
  content: "–";
  position: absolute;
  left: 0;
  color: var(--color-muted);
}

a {
  color: var(--color-accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Sections */

.section {
  margin-bottom: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--color-border);
}

.section:last-child {
  border-bottom: none;
}

.section-label {
  font-size: 0.75rem;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.75rem;
  display: block;
}

/* Hero */

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2.5rem;
  align-items: center;
}

.hero p:last-of-type {
  margin-bottom: 1.5rem;
}

.hero-tagline {
  font-size: 1.05rem;
  color: var(--color-text);
  margin-bottom: 1.25rem;
}

.hero-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.hero-icon {
  align-self: stretch;
  justify-self: stretch;
  width: 100%;
  height: 100%;
  object-fit: contain;
  transform: scale(0.75);
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 1rem;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background 0.15s, border-color 0.15s, color 0.15s, transform 0.1s;
}

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

.btn--primary {
  background: var(--color-accent);
  color: #FFFFFF;
}

.btn--primary:hover {
  background: var(--color-accent-dark);
  color: #FFFFFF;
}

.btn--ghost {
  border-color: var(--color-border);
  color: var(--color-text);
}

.btn--ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* Terminal mockup */

.terminal {
  background: #0B0F14;
  border-radius: var(--radius);
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  box-shadow: 0 8px 24px -12px rgba(0, 0, 0, 0.35);
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 0.75rem;
  background: #171E28;
  border-bottom: 1px solid #232B37;
}

.terminal-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  display: inline-block;
}

.terminal-dot--red    { background: #FF5F56; }
.terminal-dot--yellow { background: #FFBD2E; }
.terminal-dot--green  { background: #27C93F; }

.terminal-icon {
  flex: 1;
  height: 18px;
  margin-left: 0.5rem;
  object-fit: contain;
  object-position: center;
  opacity: 0.85;
}

.terminal-body {
  padding: 1rem 1.1rem 1.15rem;
  color: #D1D5DB;
  line-height: 1.7;
}

.term-line {
  white-space: pre;
}

.term-cmd::before {
  content: "$ ";
  color: #4B5563;
}

.term-cmd {
  color: #E5E7EB;
}

.term-ok {
  color: #34D399;
}

/* Code blocks — light (default) */

.highlight,
pre {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  margin: 1rem 0;
  overflow-x: auto;
}

.highlight pre {
  background: none;
  border: none;
  padding: 0;
  margin: 0;
}

code {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.6;
}

.highlight .c,
.highlight .c1,
.highlight .cm,
.highlight .cp {
  color: var(--color-muted);
}

/* Code blocks — dark variant (opt-in via .cheat-dark wrapper) */

.cheat-dark .highlight,
.cheat-dark pre {
  background: #0B0F14;
  border-color: #232B37;
}

.cheat-dark code {
  color: #D1D5DB;
}

.cheat-dark .highlight .c,
.cheat-dark .highlight .c1,
.cheat-dark .highlight .cm,
.cheat-dark .highlight .cp {
  color: #6B7280;
}

.term-ok::before {
  content: "✓ ";
}

/* Status panel (build / check results) */

.status-panel {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-bg);
}

.status-row {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
}

.status-row:last-child {
  border-bottom: none;
}

.status-icon {
  width: 18px;
  height: 18px;
  color: #16A34A;
  flex-shrink: 0;
}

.status-label {
  color: var(--color-text);
  flex: 1;
}

.status-tag {
  font-size: 0.7rem;
  font-weight: 600;
  color: #16A34A;
  background: #F0FDF4;
  border-radius: 999px;
  padding: 0.15rem 0.6rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

/* Card grid */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 1rem;
  margin-top: 0.5rem;
}

.card {
  display: block;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  background: var(--color-bg);
  text-decoration: none;
  color: inherit;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
  position: relative;
}

a.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px -14px rgba(17, 17, 17, 0.25);
  border-color: var(--color-accent);
  text-decoration: none;
}

.card--inactive {
  color: var(--color-muted);
  background: var(--color-surface);
}

.card-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-tint);
  color: var(--color-accent);
  margin-bottom: 0.85rem;
}

.card--inactive .card-icon {
  background: var(--color-border);
  color: var(--color-muted);
}

.card-icon svg {
  width: 18px;
  height: 18px;
}

.card-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--color-text);
  font-size: 0.95rem;
  margin-bottom: 0.35rem;
}

.card--inactive .card-title {
  color: var(--color-muted);
}

.card-desc {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-bottom: 0;
}

.badge-soon {
  font-size: 0.65rem;
  color: var(--color-muted);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 3px;
  padding: 0.1rem 0.4rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-left: auto;
}

/* Topic accent (OpenStack / Ceph / etc.) */

.card--topic {
  border-top: 3px solid var(--topic, var(--color-accent));
}

.card--topic .card-icon {
  background: var(--topic-tint, var(--color-accent-tint));
  color: var(--topic, var(--color-accent));
}

/* Workshop slides links */

.slides-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.slide-link {
  display: inline-block;
  padding: 0.45rem 0.85rem;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 0.875rem;
  color: var(--color-accent);
  text-decoration: none;
  transition: border-color 0.15s, background 0.15s;
}

.slide-link:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-tint);
  text-decoration: none;
}

.slide-link--pptx {
  color: var(--color-muted);
  border-color: var(--color-border);
}

.slide-link--pptx:hover {
  border-color: var(--color-muted);
  background: var(--color-surface);
}

.slide-link--primary {
  background: var(--color-accent);
  color: #FFFFFF;
  border-color: var(--color-accent);
}

.slide-link--primary:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: #FFFFFF;
}

/* Workshop header */

.workshop-header {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.workshop-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--topic-tint, var(--color-accent-tint));
  flex-shrink: 0;
}

.workshop-icon img {
  width: 26px;
  height: 26px;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.pill {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.25rem 0.7rem;
}

/* Environment diagram */

.diagram-frame {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  background: var(--color-surface);
}

.diagram-frame img {
  display: block;
  width: 100%;
  height: auto;
}

/* Logo strip */

.logo-strip {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(84px, 1fr));
  gap: 0.75rem;
  margin-top: 1rem;
}

.logo-chip {
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 0.9rem;
  background: var(--color-bg);
  transition: border-color 0.15s, background 0.15s;
}

.logo-chip:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-tint);
}

.logo-chip img {
  width: 100%;
  height: 24px;
  object-fit: contain;
  filter: grayscale(100%);
  opacity: 0.7;
  transition: filter 0.15s, opacity 0.15s;
}

.logo-chip:hover img {
  filter: grayscale(0%);
  opacity: 1;
}

/* Coming soon (inline list) */

.coming-soon {
  color: var(--color-muted);
  font-size: 0.875rem;
}

.coming-soon ul {
  list-style: none;
  margin-top: 0.5rem;
}

.coming-soon li {
  display: inline;
  margin-right: 1rem;
}

.coming-soon li::before {
  content: "·  ";
  color: var(--color-border);
}

.coming-soon li:first-child::before {
  content: "";
}

/* Footer */

footer {
  font-size: 0.8rem;
  color: var(--color-muted);
  border-top: 1px solid var(--color-border);
  padding-top: 1.5rem;
}

.footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
}

.footer-left {
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  gap: 1.5rem;
  overflow-x: auto;
}

.footer-left p {
  white-space: nowrap;
}

.footer-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  white-space: nowrap;
}

.footer-icon {
  height: 40px;
  width: auto;
  flex-shrink: 0;
  opacity: 0.8;
}

footer a {
  color: var(--color-muted);
  text-decoration: none;
}

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

/* Responsive */

@media (max-width: 720px) {
  .hero {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  body {
    padding: 1.25rem 1rem 3rem;
  }

  h1 {
    font-size: 1.4rem;
  }

  .workshop-header {
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
  }
}