/* fullstackpm.tech — Design System (AI Bootcamp Style) */
/* Font: Inter (loaded via Google Fonts in base.html) */

:root {
  /* Backgrounds (AI Bootcamp Slate palette) */
  --color-bg-primary: #FFFFFF;
  --color-bg-secondary: #F8FAFC;
  --color-bg-tertiary: #F1F5F9;

  /* Text (Pure black in light mode) */
  --color-text-primary: #000000;
  --color-text-secondary: #1D1D1F;
  --color-text-tertiary: #48484A;

  /* Borders */
  --color-border: #E2E8F0;
  --color-border-hover: #CBD5E1;

  /* Accent (Blue) - 10-step scale */
  --color-blue-50: #E6F4FB;
  --color-blue-100: #CCE9F7;
  --color-blue-200: #99D3EF;
  --color-blue-300: #66BDE7;
  --color-blue-400: #33A7DF;
  --color-blue-500: #2E8ECE;  /* Primary accent */
  --color-blue-600: #2577AD;
  --color-blue-700: #1D608C;
  --color-blue-800: #14496B;
  --color-blue-900: #0C324A;

  /* Legacy accent aliases (for backwards compatibility) */
  --color-accent: var(--color-blue-500);
  --color-accent-hover: var(--color-blue-600);
  --color-accent-light: var(--color-blue-50);
  --color-accent-dark: var(--color-blue-900);

  /* Semantic - Success (Emerald) */
  --color-success-50: #ECFDF5;
  --color-success-100: #D1FAE5;
  --color-success-500: #10B981;
  --color-success-600: #059669;
  --color-success-700: #047857;
  --color-success-900: #064E3B;
  --color-success: var(--color-success-500);
  --color-success-bg: var(--color-success-50);

  /* Semantic - Warning (Amber) */
  --color-warning-50: #FFFBEB;
  --color-warning-100: #FEF3C7;
  --color-warning-500: #F59E0B;
  --color-warning-600: #D97706;
  --color-warning-900: #78350F;
  --color-warning: var(--color-warning-500);
  --color-warning-bg: var(--color-warning-50);

  /* Semantic - Danger (Red) */
  --color-danger-50: #FEF2F2;
  --color-danger-100: #FEE2E2;
  --color-danger-500: #EF4444;
  --color-danger-600: #DC2626;
  --color-danger-900: #7F1D1D;
  --color-danger: var(--color-danger-500);
  --color-danger-bg: var(--color-danger-50);

  /* Semantic - Info (same as accent) */
  --color-info: var(--color-accent);
}

.dark {
  /* Backgrounds (deep slate) */
  --color-bg-primary: #0F172A;
  --color-bg-secondary: #1E293B;
  --color-bg-tertiary: #334155;

  /* Text (Pure white in dark mode) */
  --color-text-primary: #FFFFFF;
  --color-text-secondary: #E5E5E7;
  --color-text-tertiary: #AEAEB2;

  /* Borders */
  --color-border: #334155;
  --color-border-hover: #475569;

  /* Accent overrides for dark */
  --color-accent-light: #172554;
  --color-blue-50: #172554;   /* Darker blue for dark mode */
  --color-blue-100: #1E3A8A;  /* Darker blue for icon backgrounds */

  /* Semantic overrides for dark */
  --color-success-bg: #052E16;
  --color-warning-bg: #422006;
  --color-danger-bg: #450A0A;
}

/* Typography scale (Inter — AI Bootcamp Style) */
.text-display {
  font-size: 3.052rem;
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.text-h1 {
  font-size: 2.441rem;
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.text-h2 {
  font-size: 1.953rem;
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: 0;
}

.text-h3 {
  font-size: 1.563rem;
  line-height: 1.3;
  font-weight: 600;
  letter-spacing: 0;
}

.text-h4 {
  font-size: 1.25rem;
  line-height: 1.4;
  font-weight: 600;
  letter-spacing: 0;
}

.text-body-lg {
  font-size: 1.125rem;
  line-height: 1.6;
  letter-spacing: 0;
}

.text-body {
  font-size: 1rem;
  line-height: 1.6;
  letter-spacing: 0;
}

.text-small {
  font-size: 0.875rem;
  line-height: 1.5;
  letter-spacing: 0;
}

.text-xs {
  font-size: 0.75rem;
  line-height: 1.4;
  letter-spacing: 0.05em;
}

/* Prose styling for rendered markdown */
.prose h2 {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-top: 3rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--color-accent);
  color: var(--color-text-primary);
}

/* Part sections get special styling (supports up to 8 parts per article) */
.prose h2:nth-of-type(-n+8) {
  background: linear-gradient(135deg, var(--color-blue-50) 0%, var(--color-bg-primary) 100%);
  padding: 1.5rem;
  border-radius: 0.75rem;
  border: none;
  margin-left: -1.5rem;
  margin-right: -1.5rem;
  padding-left: 1.5rem;
  width: calc(100% + 3rem);
}

.prose h3 {
  font-size: 1.375rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  color: var(--color-text-primary);
}

.prose p {
  margin-bottom: 1rem;
  line-height: 1.5;
  letter-spacing: -0.011em;
  color: var(--color-text-secondary);
}

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

.prose a:hover {
  text-decoration: underline;
}

.prose ul,
.prose ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
  color: var(--color-text-secondary);
}

.prose li {
  margin-bottom: 0.5rem;
  line-height: 1.6;
}

.prose ol li,
.prose ul li {
  display: list-item;
}

.prose blockquote {
  border-left: 4px solid var(--color-accent);
  padding-left: 1rem;
  font-style: italic;
  color: var(--color-text-secondary);
  margin-bottom: 1rem;
}

.prose code {
  background-color: var(--color-bg-tertiary);
  padding: 0.125rem 0.375rem;
  border-radius: 0.25rem;
  font-size: 0.875rem;
  font-family: 'JetBrains Mono', monospace;
}

.prose pre {
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
  padding: 1rem;
  overflow-x: auto;
  margin-bottom: 1.5rem;
}

.prose pre code {
  background: none;
  padding: 0;
  border-radius: 0;
  font-size: 0.875rem;
}

.prose img {
  border-radius: 0.5rem;
  max-width: 100%;
  margin: 1.5rem 0;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0 1.5rem 0;
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
  overflow: hidden;
}

.prose thead {
  background-color: var(--color-bg-secondary);
}

.prose th,
.prose td {
  border: 1px solid var(--color-border);
  padding: 1rem 0.875rem;
  text-align: left;
  line-height: 1.6;
}

.prose th {
  background-color: var(--color-bg-secondary);
  font-weight: 600;
  color: var(--color-text-primary);
  font-size: 0.95rem;
}

.prose td {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.prose tr:nth-child(even) {
  background-color: var(--color-bg-tertiary);
}

.prose tr:hover {
  background-color: var(--color-bg-tertiary);
}

.prose hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2rem 0;
}

.prose del,
.prose s {
  text-decoration: line-through;
  color: var(--color-text-tertiary);
}

.prose strong {
  font-weight: 600;
  color: var(--color-text-primary);
}

.prose em {
  font-style: italic;
}

.prose ul ul,
.prose ol ol,
.prose ul ol,
.prose ol ul {
  margin-top: 0.5rem;
  margin-bottom: 0;
}

/* Line clamp utility */
.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Transitions */
.transition-colors {
  transition-property: color, background-color, border-color;
  transition-duration: 150ms;
  transition-timing-function: ease-in-out;
}

/* HTMX loading states */
.htmx-indicator {
  display: none;
}

.htmx-request .htmx-indicator {
  display: inline-flex;
}

.htmx-request.htmx-indicator {
  display: inline-flex;
}

/* Card hover effects (subtle polish) */
.card-hover {
  transition: transform 150ms ease, box-shadow 150ms ease;
}

.card-hover:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Badge component */
.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-success {
  background-color: var(--color-success-100);
  color: var(--color-success-900);
}

.badge-warning {
  background-color: var(--color-warning-100);
  color: var(--color-warning-900);
}

.badge-danger {
  background-color: var(--color-danger-100);
  color: var(--color-danger-900);
}

.badge-info {
  background-color: var(--color-blue-100);
  color: var(--color-blue-900);
}

.dark .badge-info {
  background-color: var(--color-blue-100);
  color: #FFFFFF;
}