@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Lora:ital,wght@0,400;0,500;0,600;0,700;1,400&display=swap');

:root {
  /* HSL Color System */
  --bg-canvas: hsl(35, 20%, 98%); /* Warm book-paper page */
  --bg-card: hsl(35, 12%, 95%); /* Soft bone/parchment */
  --bg-input: hsl(0, 0%, 100%);
  --text-primary: hsl(210, 25%, 12%); /* Deep charcoal */
  --text-secondary: hsl(210, 10%, 42%); /* Slate gray */
  --color-accent: hsl(215, 60%, 25%); /* Deep academic blue */
  --color-accent-hover: hsl(215, 60%, 35%);
  --color-success: hsl(145, 30%, 42%); /* Sage green */
  --color-warning: hsl(28, 50%, 45%); /* Ochre/burnt orange */
  --border-color: hsl(210, 10%, 80%); /* Structural grid border */
  --border-color-dark: hsl(210, 25%, 12%); /* Accent structural border */

  /* Typography */
  --font-serif: 'Lora', 'Georgia', serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* Layout */
  --max-width: 1200px;
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 3rem;
  --nav-height: 70px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-sans);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Typography elements */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.25;
}

h1 {
  font-size: 2.5rem;
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-md);
}

h2 {
  font-size: 1.85rem;
  margin-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--border-color-dark);
  padding-bottom: var(--spacing-xs);
}

h3 {
  font-size: 1.35rem;
  margin-bottom: var(--spacing-sm);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
  font-size: 1.05rem;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px solid var(--color-accent);
  transition: all 0.2s ease;
}

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

/* Header & Navigation */
header {
  background-color: var(--bg-canvas);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  height: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  border-bottom: none;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

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

.brand-subtitle {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  background-color: var(--text-primary);
  color: var(--bg-canvas);
  padding: 2px 6px;
}

nav ul {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
}

nav a {
  font-size: 0.95rem;
  font-weight: 500;
  border-bottom: 2px solid transparent;
  padding: var(--spacing-xs) 0;
}

nav a:hover, nav a.active {
  color: var(--color-accent);
  border-bottom: 2px solid var(--color-accent);
}

/* Layout Elements */
main {
  flex: 1;
  max-width: var(--max-width);
  width: 100%;
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-lg);
}

.section {
  margin-bottom: var(--spacing-xl);
}

/* Custom Grid System */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: 1fr 1fr;
  }
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

@media (min-width: 768px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.grid-sidebar {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

@media (min-width: 992px) {
  .grid-sidebar {
    grid-template-columns: 280px 1fr;
  }
}

/* Card Styles (Swiss Grid cards) */
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: border-color 0.2s ease;
}

.card:hover {
  border-color: var(--border-color-dark);
}

.card-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
}

/* Interactive Auditor Specific Layouts */
.auditor-header-panel {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color-dark);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.progress-stats-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-md);
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-val {
  font-size: 2.25rem;
  font-weight: 700;
  font-family: var(--font-serif);
  color: var(--color-accent);
}

.stat-lbl {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

/* Progress bar */
.progress-bar-container {
  background-color: var(--border-color);
  height: 8px;
  width: 100%;
  position: relative;
  overflow: hidden;
  margin-top: var(--spacing-sm);
}

.progress-bar-fill {
  background-color: var(--color-success);
  height: 100%;
  width: 0%;
  transition: width 0.6s cubic-bezier(0.1, 0.8, 0.3, 1);
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  align-items: center;
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: var(--spacing-lg);
}

.filter-group {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

select, input[type="text"] {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--border-color);
  background-color: var(--bg-input);
  color: var(--text-primary);
  outline: none;
  min-width: 180px;
}

select:focus, input[type="text"]:focus {
  border-color: var(--border-color-dark);
}

input[type="text"] {
  min-width: 250px;
}

/* Crosswalk Split Columns */
.crosswalk-columns {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

@media (min-width: 992px) {
  .crosswalk-columns {
    grid-template-columns: 1.1fr 0.9fr;
  }
}

.column-header {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--border-color-dark);
  margin-bottom: var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.column-header-count {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 2px 8px;
}

.standards-tree, .lessons-list {
  max-height: 700px;
  overflow-y: auto;
  border: 1px solid var(--border-color);
  background-color: var(--bg-canvas);
}

.content-standard-header {
  background-color: var(--bg-card);
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
  border-top: 1px solid var(--border-color);
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  position: sticky;
  top: 0;
  z-index: 5;
}

.content-standard-header h3 {
  font-size: 1rem;
  margin-bottom: 0;
}

.perf-standard-header {
  background-color: hsl(35, 10%, 93%);
  padding: var(--spacing-xs) var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.perf-standard-header h4 {
  font-size: 0.85rem;
  font-family: var(--font-sans);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 0;
}

.unit-lesson-header {
  background-color: var(--bg-card);
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
  border-top: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 5;
}

.unit-lesson-header h4 {
  font-size: 0.9rem;
  font-family: var(--font-serif);
  font-weight: 700;
  margin-bottom: 0;
}

/* Standard Indicator items */
.std-indicator-item {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
  cursor: pointer;
  transition: background-color 0.15s ease;
  position: relative;
}

.std-indicator-item:last-child {
  border-bottom: none;
}

.std-indicator-item:hover {
  background-color: var(--bg-card);
}

.std-indicator-item.selected {
  background-color: var(--bg-card);
  border-left: 4px solid var(--color-accent);
  padding-left: calc(var(--spacing-md) - 4px);
}

.std-indicator-item.highlight-mapped {
  background-color: hsl(145, 25%, 93%);
}

.std-indicator-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
}

.std-code {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.std-level-tag {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 1px 5px;
  background-color: var(--border-color);
  color: var(--text-secondary);
  border-radius: 2px;
}

.std-desc {
  font-size: 0.925rem;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
  line-height: 1.4;
}

.std-coverage-status {
  font-size: 0.8rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
}

.status-covered {
  color: var(--color-success);
}

.status-gap {
  color: var(--color-warning);
}

.status-scope {
  color: var(--text-secondary);
  font-style: italic;
}

/* Lesson Plan listing items */
.lesson-item {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
  cursor: pointer;
  transition: all 0.15s ease;
}

.lesson-item:last-child {
  border-bottom: none;
}

.lesson-item:hover {
  background-color: var(--bg-card);
}

.lesson-item.selected {
  background-color: var(--bg-card);
  border-left: 4px solid var(--color-accent);
  padding-left: calc(var(--spacing-md) - 4px);
}

.lesson-item.highlight-mapped {
  background-color: hsl(215, 40%, 93%);
}

.lesson-meta {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
}

.lesson-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.lesson-stds-list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: var(--spacing-xs);
}

.lesson-std-pill {
  font-size: 0.7rem;
  font-weight: 600;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 1px 6px;
  color: var(--color-accent);
}

.lesson-std-pill:hover {
  background-color: var(--color-accent);
  color: var(--bg-canvas);
}

/* Curriculum Detail Accordions */
.unit-block {
  margin-bottom: var(--spacing-md);
  border: 1px solid var(--border-color);
  background-color: var(--bg-card);
}

.unit-block summary {
  padding: var(--spacing-md);
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.unit-block summary::-webkit-details-marker {
  display: none;
}

.unit-block summary::after {
  content: '+';
  font-family: var(--font-sans);
  font-size: 1.5rem;
  font-weight: 300;
}

.unit-block[open] summary::after {
  content: '−';
}

.unit-details {
  background-color: var(--bg-canvas);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-lg);
}

.unit-description {
  font-size: 1.05rem;
  margin-bottom: var(--spacing-lg);
  font-style: italic;
  color: var(--text-secondary);
}

.day-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
}

@media (min-width: 768px) {
  .day-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.day-card {
  border: 1px solid var(--border-color);
  padding: var(--spacing-md);
  background-color: var(--bg-card);
}

.day-num {
  font-weight: 700;
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  margin-bottom: var(--spacing-xs);
}

.day-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
}

/* Buttons */
.btn {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.9rem;
  padding: var(--spacing-sm) var(--spacing-lg);
  border: 1px solid var(--border-color-dark);
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
}

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

.btn-primary {
  background-color: var(--color-accent);
  color: var(--bg-canvas);
  border-color: var(--color-accent);
}

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

/* Info Alert Panels */
.alert-panel {
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--color-accent);
  padding: var(--spacing-md);
  background-color: var(--bg-card);
  margin-bottom: var(--spacing-lg);
}

.alert-panel.warning {
  border-left-color: var(--color-warning);
}

.alert-panel.success {
  border-left-color: var(--color-success);
}

.alert-title {
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: var(--spacing-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Footer styling */
footer {
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-lg) var(--spacing-md);
  background-color: var(--bg-card);
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: auto;
}

.footer-content {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
}

/* Print Overrides */
@media print {
  body {
    background-color: white !important;
    color: black !important;
    font-size: 11pt !important;
  }
  
  header, footer, .filter-bar, .btn, .standards-tree::-webkit-scrollbar, .lessons-list::-webkit-scrollbar {
    display: none !important;
  }
  
  main {
    padding: 0 !important;
    max-width: 100% !important;
    width: 100% !important;
  }
  
  .crosswalk-columns {
    display: block !important;
  }
  
  .standards-tree, .lessons-list {
    max-height: none !important;
    overflow: visible !important;
    border: none !important;
  }
  
  .std-indicator-item {
    page-break-inside: avoid;
    border: 1px solid #ccc !important;
    margin-bottom: 0.5cm;
    background-color: white !important;
  }
  
  .auditor-header-panel {
    border: 1px solid black !important;
    background-color: white !important;
  }
}