/* ==========================================================================
   Speck Hands-On Lab Showcase Portal
   Minimal Human UI Design (1KOMMA5° & ContentSnare Archetyp)
   Clean, Crisp, Minimal Text, Focus on Code & Playgrounds
   ========================================================================== */

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

:root {
  /* Default: Sitro Studio Crisp Canvas */
  --color-canvas: #ffffff;
  --color-bg-page: #f8fafc;
  --color-surface: #ffffff;
  --color-surface-subtle: #f1f5f9;
  --color-surface-hover: #e2e8f0;
  --color-text-main: #0f172a;
  --color-text-body: #334155;
  --color-text-muted: #64748b;
  --color-border: #e2e8f0;
  --color-border-hover: #cbd5e1;
  
  --color-primary: #0284c7;
  --color-primary-hover: #0369a1;
  --color-primary-light: #e0f2fe;
  --color-primary-border: #bae6fd;
  
  --color-success: #059669;
  --color-success-light: #d1fae5;
  --color-success-border: #a7f3d0;
  
  --color-danger: #dc2626;
  --color-danger-light: #fee2e2;
  --color-danger-border: #fecaca;

  --color-warning: #d97706;
  --color-warning-light: #fef3c7;
  
  --color-code-bg: #0d1117;
  --color-code-header: #161b22;
  --color-code-border: #30363d;
  --color-code-text: #e6edf3;
  --color-code-muted: #8b949e;
  
  --shadow-sm: 0 1px 3px 0 rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
  --header-height: 64px;
}

[data-theme="fjord"] {
  --color-canvas: #061a1b;
  --color-bg-page: #041213;
  --color-surface: #0a2527;
  --color-surface-subtle: #0f3235;
  --color-surface-hover: #143e42;
  --color-text-main: #f8fafc;
  --color-text-body: #e2e8f0;
  --color-text-muted: #94a3b8;
  --color-border: #1a4347;
  --color-border-hover: #26595e;
  
  --color-primary: #14b8a6;
  --color-primary-hover: #0d9488;
  --color-primary-light: rgba(20, 184, 166, 0.15);
  --color-primary-border: #14b8a6;
  
  --color-code-bg: #030d0e;
  --color-code-header: #07191b;
  --color-code-border: #143538;
}

[data-theme="slate"] {
  --color-canvas: #090d16;
  --color-bg-page: #060910;
  --color-surface: #0f172a;
  --color-surface-subtle: #1e293b;
  --color-surface-hover: #334155;
  --color-text-main: #f8fafc;
  --color-text-body: #e2e8f0;
  --color-text-muted: #94a3b8;
  --color-border: #1e293b;
  --color-border-hover: #334155;
  
  --color-primary: #38bdf8;
  --color-primary-hover: #0ea5e9;
  --color-primary-light: rgba(56, 189, 248, 0.15);
  --color-primary-border: #38bdf8;
  
  --color-code-bg: #05080e;
  --color-code-header: #0b111d;
  --color-code-border: #192338;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--color-text-body);
  background-color: var(--color-bg-page);
  line-height: 1.55;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Outfit', sans-serif;
  color: var(--color-text-main);
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.015em;
}

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

code, pre, .font-mono {
  font-family: 'JetBrains Mono', monospace;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background-color: var(--color-canvas);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand-badge {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.brand-logo-symbol {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background-color: var(--color-primary);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  font-size: 1.05rem;
}

.brand-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text-main);
  letter-spacing: -0.01em;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-muted);
  padding: 0.4rem 0.8rem;
  border-radius: 9999px;
  transition: all 0.15s ease;
}

.nav-link:hover {
  color: var(--color-text-main);
  background-color: var(--color-surface-subtle);
}

.nav-link.active {
  color: var(--color-primary);
  background-color: var(--color-primary-light);
}

.theme-pill-group {
  display: flex;
  background-color: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  padding: 3px;
  border-radius: 9999px;
  gap: 2px;
}

.theme-btn {
  border: none;
  background: none;
  padding: 4px 10px;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-text-muted);
  border-radius: 9999px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.theme-btn.active {
  background-color: var(--color-surface);
  color: var(--color-text-main);
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* Page Hero - Minimal & Punchy */
.page-hero {
  padding: 2.25rem 0 1.75rem;
  background-color: var(--color-canvas);
  border-bottom: 1px solid var(--color-border);
}

.hero-title {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 0.4rem;
  letter-spacing: -0.02em;
}

.hero-desc {
  font-size: 1rem;
  color: var(--color-text-muted);
  max-width: 680px;
}

/* Breadcrumb Bar */
.breadcrumb-bar {
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-canvas);
}

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

.btn-back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-muted);
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  background-color: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  transition: all 0.15s ease;
}

.btn-back:hover {
  color: var(--color-text-main);
  border-color: var(--color-border-hover);
}

.page-step-indicator {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
}

/* Cards Grid */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.25rem;
  margin: 2rem 0 3.5rem;
}

.hub-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.hub-card:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.hub-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.card-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  padding: 0.15rem 0.55rem;
  border-radius: 6px;
}

.card-tag {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-text-muted);
  background-color: var(--color-surface-subtle);
  padding: 0.2rem 0.55rem;
  border-radius: 6px;
  border: 1px solid var(--color-border);
}

.hub-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.hub-card-desc {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  margin-bottom: 1.25rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-weight: 600;
  font-size: 0.85rem;
  padding: 0.6rem 1.25rem;
  border-radius: 9999px;
  cursor: pointer;
  transition: all 0.15s ease;
  border: none;
  text-align: center;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background-color: var(--color-text-main);
  color: var(--color-canvas);
}

.btn-primary:hover {
  background-color: var(--color-primary);
  color: #ffffff;
}

.btn-secondary {
  background-color: var(--color-surface-subtle);
  color: var(--color-text-main);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background-color: var(--color-surface-hover);
  border-color: var(--color-border-hover);
}

.btn-full {
  width: 100%;
}

/* Section Blocks */
.section-block {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: 1.75rem;
  margin-bottom: 1.75rem;
  box-shadow: var(--shadow-sm);
}

.section-block-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--color-border);
}

/* Terminal & Code Boxes */
.terminal-card {
  background-color: var(--color-code-bg);
  border: 1px solid var(--color-code-border);
  border-radius: 10px;
  overflow: hidden;
  margin: 1rem 0;
}

.terminal-header {
  background-color: var(--color-code-header);
  border-bottom: 1px solid var(--color-code-border);
  padding: 0.55rem 0.85rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.terminal-dots {
  display: flex;
  gap: 5px;
}

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

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

.terminal-file-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: var(--color-code-muted);
}

.terminal-body {
  padding: 1rem;
  overflow-x: auto;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  line-height: 1.55;
  color: var(--color-code-text);
}

.diff-del {
  background-color: rgba(220, 38, 38, 0.18);
  color: #fca5a5;
  display: block;
  margin: 0 -1rem;
  padding: 0.15rem 1rem;
  border-left: 3px solid #ef4444;
}

.diff-add {
  background-color: rgba(5, 150, 105, 0.18);
  color: #6ee7b7;
  display: block;
  margin: 0 -1rem;
  padding: 0.15rem 1rem;
  border-left: 3px solid #10b981;
}

.code-comment {
  color: #8b949e;
  font-style: italic;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.55rem;
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
}

.badge-speck {
  background-color: var(--color-surface-subtle);
  color: var(--color-text-main);
  border: 1px solid var(--color-border);
}

.badge-error {
  background-color: var(--color-danger-light);
  color: var(--color-danger);
  border: 1px solid var(--color-danger-border);
}

.badge-fixed {
  background-color: var(--color-success-light);
  color: var(--color-success);
  border: 1px solid var(--color-success-border);
}

/* Playgrounds & Inputs */
.playground-box {
  background-color: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 1.25rem;
  margin-top: 1.25rem;
}

.interactive-input {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
  font-family: inherit;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  color: var(--color-text-main);
  outline: none;
}

.interactive-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary-light);
}

.chips-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.65rem;
}

.test-chip {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-body);
  padding: 0.3rem 0.65rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
}

.test-chip:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.result-card {
  padding: 1rem 1.25rem;
  border-radius: 10px;
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  margin-top: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Footer */
.site-footer {
  margin-top: auto;
  padding: 2rem 0;
  background-color: var(--color-canvas);
  border-top: 1px solid var(--color-border);
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

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

@media (max-width: 800px) {
  .site-header {
    height: auto;
    padding: 0.65rem 0;
  }
  .header-inner {
    flex-direction: column;
    gap: 0.6rem;
    align-items: flex-start;
  }
  .main-nav {
    flex-wrap: wrap;
    width: 100%;
  }
  .card-grid {
    grid-template-columns: 1fr;
  }
  .hero-title {
    font-size: 1.6rem;
  }
}