/* ============================================================
   CLASSROOMOS — STRATEGIC INTELLIGENCE STYLES
   
   Design Philosophy: Calm, professional, confidence-building
   NOT: Colorful SaaS, gamification, dark themes
   Think: Bloomberg Terminal for Educators
============================================================ */

:root {
  /* Colors: Professional Blues + Warm Accents */
  --color-primary: #1e40af;
  --color-primary-light: #3b82f6;
  --color-primary-lighter: #93c5fd;
  --color-primary-dark: #1e3a8a;
  
  --color-accent: #f59e0b;
  --color-accent-light: #fbbf24;
  
  --color-success: #10b981;
  --color-success-light: #d1fae5;
  --color-warning: #f59e0b;
  --color-warning-light: #fef3c7;
  --color-error: #ef4444;
  --color-error-light: #fee2e2;
  
  /* Neutrals: Light Theme Only */
  --color-bg: #f8f9fa;
  --color-bg-alt: #ffffff;
  --color-surface: #ffffff;
  --color-border: #e5e7eb;
  
  --color-text: #1f2937;
  --color-text-medium: #6b7280;
  --color-text-light: #9ca3af;
  
  /* Typography */
  --font-heading: 'Crimson Pro', serif;
  --font-body: 'DM Sans', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  
  /* Layout */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
}

/* ============================================================
   BASE
============================================================ */

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

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
}

/* ============================================================
   HEADER
============================================================ */

.header {
  background: white;
  border-bottom: 2px solid var(--color-border);
  padding: var(--space-lg) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.brand-mark svg {
  filter: drop-shadow(0 2px 4px rgba(30, 64, 175, 0.15));
}

.brand-title {
  font-size: 1.5rem;
  margin: 0;
  color: var(--color-text);
}

.brand-subtitle {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-medium);
  margin: 0;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.header-actions {
  display: flex;
  gap: var(--space-sm);
}

.btn-icon {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 1.125rem;
}

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

/* Logo animation */
.logo-square {
  animation: pulse 3s ease-in-out infinite;
}

.logo-square:nth-child(1) { animation-delay: 0s; }
.logo-square:nth-child(2) { animation-delay: 0.75s; }
.logo-square:nth-child(3) { animation-delay: 1.5s; }
.logo-square:nth-child(4) { animation-delay: 2.25s; }

.logo-accent {
  animation: pulseAccent 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.8; }
}

@keyframes pulseAccent {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(0.9); }
}

/* ============================================================
   MAIN DASHBOARD
============================================================ */

.main-dashboard {
  padding: var(--space-2xl) 0;
  min-height: calc(100vh - 200px);
}

/* ============================================================
   CONFIG PANEL
============================================================ */

.config-panel {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-2xl);
  box-shadow: var(--shadow-md);
}

.panel-header {
  padding: var(--space-lg) var(--space-xl);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: white;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.panel-header h2 {
  color: white;
  font-size: 1.25rem;
  margin: 0;
}

.toggle-icon {
  font-size: 0.875rem;
  transition: transform var(--transition-base);
}

.config-form.collapsed {
  display: none;
}

.config-form.collapsed + .panel-header .toggle-icon {
  transform: rotate(-90deg);
}

.config-form {
  padding: var(--space-xl);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-medium);
  margin-bottom: var(--space-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--color-text);
  background: white;
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

.input-row {
  display: flex;
  gap: var(--space-sm);
}

.input-row input,
.input-row select {
  flex: 1;
}

.btn-primary {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: white;
  border: none;
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-icon {
  font-size: 1.25rem;
}

.btn-text {
  letter-spacing: 0.01em;
}

/* ============================================================
   EMPTY STATE
============================================================ */

.empty-state {
  text-align: center;
  padding: var(--space-2xl);
  background: white;
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
}

.empty-icon {
  font-size: 3rem;
  margin-bottom: var(--space-md);
}

.empty-state h3 {
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
}

.empty-state p {
  color: var(--color-text-medium);
}

/* ============================================================
   DASHBOARD CONTAINER
============================================================ */

.dashboard-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.loading {
  text-align: center;
  padding: var(--space-2xl);
  font-size: 1.125rem;
  color: var(--color-text-medium);
}

.error-state {
  background: var(--color-error-light);
  border: 2px solid var(--color-error);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
}

/* ============================================================
   DASHBOARD HEADER
============================================================ */

.dashboard-header {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
}

.classroom-info h2 {
  font-size: 1.5rem;
  margin-bottom: var(--space-md);
}

.classroom-stats {
  display: flex;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.classroom-stats .stat {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--color-text-medium);
  padding: var(--space-xs) var(--space-md);
  background: var(--color-bg);
  border-radius: var(--radius-sm);
}

.classroom-stats .stat-warning {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-warning);
  padding: var(--space-xs) var(--space-md);
  background: var(--color-warning-light);
  border-radius: var(--radius-sm);
}

/* ============================================================
   INTELLIGENCE CARDS
============================================================ */

.intelligence-card {
  background: white;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.card-header {
  padding: var(--space-md) var(--space-xl);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.card-header h3 {
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-medium);
  margin: 0;
}

.card-content {
  padding: var(--space-xl);
}

/* Status Card */
.status-line {
  padding: var(--space-sm) 0;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  border-bottom: 1px solid var(--color-bg);
}

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

.status-label {
  font-weight: 600;
  color: var(--color-text);
}

.status-value {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--color-primary);
}

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

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

.status-line.primary {
  color: var(--color-primary);
}

.status-icon {
  font-size: 1.125rem;
}

/* Priority Card */
.priority-card {
  border-color: var(--color-primary);
  border-width: 3px;
}

.decision-section {
  margin-bottom: var(--space-lg);
}

.decision-section:last-child {
  margin-bottom: 0;
}

.decision-section h4 {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-medium);
  margin-bottom: var(--space-sm);
}

.decision-list,
.strategy-list,
.defer-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.decision-list li,
.strategy-list li,
.defer-list li {
  padding: var(--space-xs) 0;
  color: var(--color-text);
  font-size: 0.9375rem;
  line-height: 1.6;
}

.strategy-item {
  color: var(--color-primary);
  font-weight: 500;
}

.defer-item {
  color: var(--color-warning);
  font-weight: 500;
}

/* Quick Win Card */
.win-card {
  border-color: var(--color-success);
  border-width: 2px;
}

.win-text {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.outcome-box {
  background: var(--color-success-light);
  padding: var(--space-md);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-success);
}

.outcome-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-success);
  display: block;
  margin-bottom: var(--space-xs);
}

.outcome-value {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
}

/* Risk Card */
.risk-card {
  border-color: var(--color-warning);
  border-width: 2px;
}

.risk-item {
  padding: var(--space-md);
  background: var(--color-warning-light);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-warning);
  margin-bottom: var(--space-md);
}

.risk-item:last-child {
  margin-bottom: 0;
}

.risk-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-xs);
}

.risk-icon {
  font-size: 1.125rem;
}

.risk-type {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-warning);
}

.risk-message {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
}

.risk-impact {
  font-size: 0.875rem;
  color: var(--color-text-medium);
  padding-left: calc(1.125rem + var(--space-sm));
}

/* Progress Card */
.progress-section {
  margin-bottom: var(--space-xl);
}

.progress-section:last-child {
  margin-bottom: 0;
}

.progress-section h4 {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-medium);
  margin-bottom: var(--space-md);
}

.standard-progress {
  margin-bottom: var(--space-md);
}

.standard-progress:last-child {
  margin-bottom: 0;
}

.standard-label {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-sm);
}

.standard-code {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-primary);
}

.standard-status {
  font-size: 0.8125rem;
  color: var(--color-text-medium);
}

.current-badge {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-warning);
  margin-left: auto;
}

.progress-bar {
  height: 8px;
  background: var(--color-bg);
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: var(--space-xs);
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  transition: width 1s ease;
}

.progress-percent {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-text-medium);
}

.deadline-stats {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.stat-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.stat-item.success .stat-icon {
  color: var(--color-success);
}

.stat-item.warning .stat-icon {
  color: var(--color-warning);
}

.stat-text {
  font-size: 0.9375rem;
  color: var(--color-text);
}

/* Week Card */
.week-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-sm);
}

.week-day {
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-md);
  text-align: center;
}

.week-day.today {
  background: var(--color-warning-light);
  border-color: var(--color-warning);
  border-width: 2px;
}

.week-day.no-plan {
  opacity: 0.5;
}

.day-name {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-medium);
  margin-bottom: var(--space-xs);
}

.day-date {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.day-standard {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.day-strategy {
  font-size: 0.75rem;
  color: var(--color-text-medium);
  margin-bottom: var(--space-xs);
}

.day-status {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-success);
}

.day-content {
  font-size: 0.875rem;
  color: var(--color-text-light);
  font-style: italic;
}

/* ============================================================
   FOOTER
============================================================ */

.footer {
  background: white;
  border-top: 1px solid var(--color-border);
  padding: var(--space-xl) 0;
  margin-top: var(--space-2xl);
  text-align: center;
}

.footer p {
  font-size: 0.875rem;
  color: var(--color-text-medium);
}

/* ============================================================
   RESPONSIVE
============================================================ */

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

  .classroom-stats {
    flex-direction: column;
  }

  .week-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   PRINT
============================================================ */

@media print {
  .header-actions,
  .config-panel,
  .footer {
    display: none;
  }

  .intelligence-card {
    page-break-inside: avoid;
  }
}