/* =========================================================
   KAP Documentation Portal — Design System Styles
   Built on KavAI Design System Core Tokens
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  /* ===== Brand ===== */
  --kav-indigo:       #2814A0;   /* Primary */
  --kav-indigo-600:   #3823C2;
  --kav-indigo-800:   #1E0E78;
  --kav-indigo-tint:  rgba(40, 20, 160, 0.08);
  --kav-ink:          #0A0B1F;
  --kav-paper:        #FFFFFF;
  --kav-bone:         #F6F4EE;
  --kav-cream:        #FAF8F2;

  /* Accents */
  --kav-signal:       #00A37A;
  --kav-amber:        #D97706;
  --kav-alert:        #C2221A;

  /* Neutrals */
  --kav-gray-900:     #0A0B1F;
  --kav-gray-700:     #2C2D3A;
  --kav-gray-500:     #6A6B78;
  --kav-gray-400:     #9A9BA6;
  --kav-gray-300:     #D5D5DE;
  --kav-gray-200:     #E6E6EC;
  --kav-gray-100:     #F1F0EB;
  --kav-gray-50:      #F9F8F4;

  /* ===== Semantic ===== */
  --fg-1:             var(--kav-ink);
  --fg-2:             rgba(10, 11, 31, 0.68);
  --fg-3:             rgba(10, 11, 31, 0.48);
  --fg-brand:         var(--kav-indigo);
  --fg-on-brand:      var(--kav-paper);

  --bg-canvas:        var(--kav-paper);
  --bg-surface:       var(--kav-bone);
  --bg-inverse:       var(--kav-ink);
  --bg-brand:         var(--kav-indigo);

  --border-subtle:    var(--kav-gray-200);
  --border-strong:    var(--kav-gray-300);
  --border-brand:     var(--kav-indigo);

  /* ===== Spacing (4px base) ===== */
  --space-1:  4px;
  --space-2:  8px;
  --space-3:  12px;
  --space-4:  16px;
  --space-5:  20px;
  --space-6:  24px;
  --space-8:  32px;
  --space-12: 48px;

  /* ===== Radii ===== */
  --radius-sm:    4px;
  --radius-md:    6px;
  --radius-lg:    12px;
  --radius-xl:    20px;
  --radius-full:  9999px;

  /* ===== Shadows ===== */
  --shadow-sm:   0 1px 2px rgba(10, 11, 31, 0.04), 0 0 0 1px rgba(10, 11, 31, 0.04);
  --shadow-md:   0 2px 6px rgba(10, 11, 31, 0.06), 0 0 0 1px rgba(10, 11, 31, 0.04);
  --shadow-lg:   0 10px 32px rgba(10, 11, 31, 0.08), 0 0 0 1px rgba(10, 11, 31, 0.04);
  --shadow-brand:0 6px 24px rgba(40, 20, 160, 0.22);

  /* ===== Typography ===== */
  --font-display: 'Space Grotesk', sans-serif;
  --font-sans:    'Inter', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  /* Legacy variables for backward compatibility */
  --primary-color:   var(--kav-indigo);
  --secondary-color: var(--kav-indigo-600);
  --accent-color:    #06b6d4;
  --success-color:   var(--kav-signal);
  --warning-color:   var(--kav-amber);
  --danger-color:    var(--kav-alert);
  --dark-color:      var(--kav-gray-900);
  --light-color:     var(--kav-gray-50);
  --text-color:      var(--fg-1);
  --text-light:      var(--fg-2);
}

/* ===== Base elements ===== */
html, body {
  font-family: var(--font-sans);
  color: var(--fg-1);
  background: var(--bg-canvas);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--fg-1);
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

h1 { font-size: 2.5rem; line-height: 1.1; letter-spacing: -0.03em; }
h2 { font-size: 2rem; line-height: 1.2; }
h3 { font-size: 1.5rem; line-height: 1.3; }

p { margin-bottom: 1.25rem; }

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

a:hover {
  color: var(--kav-indigo-600);
}

/* ===== Component Styles ===== */

/* Hero Section */
.hero-section {
  background: linear-gradient(135deg, var(--kav-indigo) 0%, var(--kav-indigo-600) 100%);
  color: white;
  padding: 4rem 2rem;
  margin: -2rem -2rem 3rem -2rem;
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
  text-align: center;
  box-shadow: var(--shadow-brand);
}

.hero-section h1 {
  color: white;
  font-size: 3.5rem;
  margin-bottom: 1rem;
}

.hero-section h2 {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.5rem;
  font-weight: 400;
  margin-bottom: 2rem;
  font-family: var(--font-sans);
}

/* Cards */
.feature-card, .capability-card, .solution-type {
  background: white;
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s var(--ease-out), box-shadow 0.2s var(--ease-out), border-color 0.2s var(--ease-out);
}

.feature-card:hover, .capability-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--kav-indigo-tint);
}

/* Navigation Cards (from index.html) */
.nav-card {
  @apply block bg-white p-6 rounded-xl border-2 border-slate-200 hover:border-indigo-400 hover:shadow-lg transition group;
}

/* We also need to override the hardcoded tailwind classes in index.html for a deeper integration, 
   but for now we'll add CSS rules that target those structures. */

/* Buttons */
.kav-btn, .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-family: var(--font-sans);
  transition: all 0.2s var(--ease-out);
  cursor: pointer;
  border: 1px solid transparent;
  gap: 8px;
}

.btn-primary, .kav-btn-primary {
  background: var(--kav-indigo);
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover, .kav-btn-primary:hover {
  background: var(--kav-indigo-600);
  transform: translateY(-1px);
  box-shadow: var(--shadow-brand);
}

.btn-secondary, .kav-btn-secondary {
  background: transparent;
  color: var(--kav-indigo);
  border-color: var(--kav-indigo);
}

.btn-secondary:hover, .kav-btn-secondary:hover {
  background: var(--kav-indigo-tint);
  transform: translateY(-1px);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-family: var(--font-mono);
}

.badge-sensing { background: var(--status-sensing-bg); color: var(--status-sensing-fg); }
.badge-ok      { background: var(--status-ok-bg); color: var(--status-ok-fg); }
.badge-warn    { background: var(--status-warn-bg); color: var(--status-warn-fg); }
.badge-crit    { background: var(--status-crit-bg); color: var(--status-crit-fg); }

/* Table Styling */
table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: 1.5rem 0;
  background: white;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-sm);
}

th, td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
}

th {
  background: var(--kav-gray-50);
  font-weight: 600;
  color: var(--kav-gray-700);
  font-family: var(--font-display);
}

tr:last-child td {
  border-bottom: none;
}

tr:hover td {
  background: var(--kav-gray-50);
}

/* Code blocks */
pre {
  background: var(--kav-ink);
  color: var(--kav-gray-50);
  padding: 1.25rem;
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: 1.5rem 0;
  box-shadow: var(--shadow-md);
}

code {
  background: var(--kav-gray-100);
  padding: 0.2rem 0.4rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.9em;
  color: var(--kav-alert);
}

pre code {
  background: transparent;
  padding: 0;
  color: inherit;
  font-size: 13px;
}

/* Blockquotes */
blockquote {
  border-left: 4px solid var(--kav-indigo);
  padding: 1rem 1.5rem;
  margin: 2rem 0;
  background: var(--kav-bone);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  color: var(--fg-2);
}

/* Callouts (Quarto style) */
.callout {
  margin: 1.5rem 0;
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-md);
  border-left: 4px solid;
  box-shadow: var(--shadow-sm);
}

.callout-note { background: #eff6ff; border-color: #3b82f6; }
.callout-warning { background: #fffbeb; border-color: #f59e0b; }
.callout-important { background: #fef2f2; border-color: #ef4444; }
.callout-tip { background: #f0fdf4; border-color: #10b981; }

/* Navbar */
#kav-shared-navbar {
  border-bottom-color: var(--border-subtle);
  height: 56px !important;
}

.kav-navbar-inner {
  height: 56px !important;
}

/* Requirements Accordion */
details.req-accordion {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

details.req-accordion > summary {
  background: white;
  padding: 0.75rem 1rem;
}

details.req-accordion[open] > summary {
  border-bottom: 1px solid var(--border-subtle);
  background: var(--kav-gray-50);
}

/* Responsive adjustments */
@media (max-width: 768px) {
  h1 { font-size: 2.25rem; }
  .hero-section { padding: 3rem 1rem; }
  .hero-section h1 { font-size: 2.5rem; }
}