.main-content {
  background-color: var(--bg-color);
}

.tracker-section, .analytics-section, .advanced-section {
  padding: var(--space-xl) var(--space-md);
  border-bottom: var(--border-thick);
  max-width: var(--container-max-width);
  margin: 0 auto;
}

.section-header {
  margin-bottom: var(--space-lg);
  max-width: 800px;
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--accent-color);
  font-weight: 600;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
}

.section-title {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  margin-bottom: var(--space-sm);
}

.section-text {
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   2. TRACKING FORM & INPUTS
   -------------------------------------------------------------------------- */
.tracker-form {
  background-color: #FFFFFF;
  border: var(--border-thick);
  padding: var(--space-md);
  margin-bottom: var(--space-lg);
  box-shadow: var(--shadow-flat);
}

.input-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.input-box {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.input-box label, .goal-wrapper label {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
}

.input-box input, .goal-wrapper textarea {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  padding: 0.85rem;
  border: var(--border-thin);
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: all var(--transition-fast);
  outline: none;
}

.input-box input:focus, .goal-wrapper textarea:focus {
  background-color: #FFFFFF;
  border-color: var(--accent-color);
  box-shadow: 3px 3px 0px var(--accent-color);
}

/* Period Selector */
.period-selector {
  display: flex;
  gap: 0.5rem;
  margin-bottom: var(--space-md);
}

.period-selector .period {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 0.5rem 1rem;
  background-color: transparent;
  border: var(--border-thin);
}

.period-selector .period.active {
  background-color: var(--accent-color);
  color: #FFFFFF;
  box-shadow: 2px 2px 0px var(--text-color);
}

.period-selector .period:hover:not(.active) {
  background-color: var(--hover-color);
  color: var(--text-color);
}

/* Goal Wrapper */
.goal-wrapper {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: var(--space-md);
}

.goal-wrapper textarea {
  resize: vertical;
}

/* Form Actions */
.form-actions {
  display: flex;
  gap: var(--space-sm);
}

/* --------------------------------------------------------------------------
   3. STATS & SUMMARY WIDGETS
   -------------------------------------------------------------------------- */
.quick-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.stat-card {
  background-color: #FFFFFF;
  border: var(--border-thin);
  padding: var(--space-md);
  box-shadow: var(--shadow-flat);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.stat-card:hover {
  transform: translate(-4px, -4px);
  box-shadow: var(--shadow-hover);
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  display: block;
  margin-bottom: 0.5rem;
}

.stat-card h3 {
  font-family: var(--font-mono);
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--accent-color);
}

/* Summary Grid */
.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-sm);
}

.summary-card {
  background-color: var(--bg-color);
  border: var(--border-thin);
  padding: var(--space-sm);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.summary-card span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.summary-card strong {
  font-size: 1.25rem;
  font-family: var(--font-display);
}

/* --------------------------------------------------------------------------
   4. ANALYTICS & WIDGET CARDS
   -------------------------------------------------------------------------- */
.analytics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-md);
}

.analytics-card, .advanced-card {
  background-color: #FFFFFF;
  border: var(--border-thick);
  padding: var(--space-md);
  box-shadow: var(--shadow-flat);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.analytics-card:hover, .advanced-card:hover {
  transform: translate(-4px, -4px);
  box-shadow: var(--shadow-hover);
}

.card-label {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  border-bottom: var(--border-thin);
  padding-bottom: 0.5rem;
  text-transform: uppercase;
}

.analytics-card h3, .advanced-card h3 {
  font-size: clamp(2rem, 3.5vw, 3rem);
}

/* Chart Canvas Wrapper Styles */
.chart-card canvas, .advanced-card canvas {
  width: 100% !important;
  height: auto !important;
  max-height: 320px;
  background-color: #FFFFFF;
}

/* Progress Rings */
.progress-ring {
  width: 120px;
  height: 120px;
  margin: 1rem auto;
}

.progress-ring svg {
  transform: rotate(-90deg);
  width: 100%;
  height: 100%;
}

.ring-bg {
  fill: none;
  stroke: var(--bg-color);
  stroke-width: 8;
}

.ring-progress {
  fill: none;
  stroke: var(--accent-color);
  stroke-width: 8;
  stroke-dasharray: 326.7;
  stroke-dashoffset: 80;
  stroke-linecap: square;
  transition: stroke-dashoffset var(--transition-slow);
}

.score-message {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent-color);
}

/* Focus Bar */
.focus-bar {
  width: 100%;
  height: 1.5rem;
  background-color: var(--bg-color);
  border: var(--border-thin);
}

.focus-fill {
  height: 100%;
  background-color: var(--hover-color);
  border-right: var(--border-thin);
  transition: width var(--transition-slow);
}

.card-footer, .goal-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

/* Weekly Heatmap */
.heatmap-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0.5rem;
  margin: 1rem 0;
}

.heat {
  aspect-ratio: 1;
  background-color: var(--bg-color);
  border: var(--border-thin);
  transition: background-color var(--transition-fast);
}

.heat.active {
  background-color: #ffd8d1;
}

.heat.high {
  background-color: #ff8b75;
}

.heat.max {
  background-color: var(--accent-color);
}

.heatmap-card small {
  display: block;
  text-align: center;
  color: var(--text-muted);
}

/* Mood Analysis */
.mood-wrapper {
  display: flex;
  justify-content: space-around;
  margin: 1rem 0;
}

.mood {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  padding: 0.5rem;
  border: var(--border-thin);
  min-width: 60px;
  background-color: var(--bg-color);
}

.mood span {
  font-size: 1.5rem;
}

.mood strong {
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

/* Goal Progress */
.goal-progress {
  width: 100%;
  height: 1.5rem;
  background-color: var(--bg-color);
  border: var(--border-thin);
}

.goal-fill {
  height: 100%;
  background-color: var(--accent-color);
  border-right: var(--border-thin);
}

/* Advanced Grid specific structure */
.advanced-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-md);
}

.advanced-grid > article:first-of-type {
  grid-column: span 2;
}

@media (max-width: 900px) {
  .advanced-grid > article:first-of-type {
    grid-column: span 1;
  }
}

/* Calendar Grid */
.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}

.calendar-day {
  aspect-ratio: 1;
  border: 1px solid var(--border-color);
  background-color: var(--bg-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

/* AI Insights List */
.insight-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.insight-list li {
  padding: 0.75rem;
  background-color: var(--bg-color);
  border: var(--border-thin);
  font-size: 0.95rem;
}

/* Achievements Grid */
.achievement-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.5rem;
}

.achievement {
  border: var(--border-thin);
  padding: 0.75rem;
  text-align: center;
  background-color: var(--bg-color);
}

.achievement h4 {
  font-size: 1rem;
  margin: 0.25rem 0;
}

.achievement p {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Recommendations */
.recommendations {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.recommendations p {
  padding: 0.75rem;
  border-left: var(--border-thick);
  background-color: var(--bg-color);
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

/* --------------------------------------------------------------------------
   5. FOOTER, MODAL & LOADER
   -------------------------------------------------------------------------- */
.footer {
  border-top: var(--border-thick);
  padding: var(--space-xl) var(--space-md);
  background-color: var(--text-color);
  color: var(--bg-color);
}

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

.footer h2 {
  font-size: 3rem;
  letter-spacing: -0.05em;
  color: var(--accent-color);
}

.footer p {
  max-width: 400px;
  font-size: 1.1rem;
  opacity: 0.8;
}

.footer-links {
  display: flex;
  gap: var(--space-md);
}

.footer-links a {
  font-family: var(--font-mono);
  text-decoration: none;
  color: var(--bg-color);
  text-transform: uppercase;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--hover-color);
}

.footer small {
  opacity: 0.6;
  font-size: 0.75rem;
  margin-top: var(--space-md);
}

.modal {
  border: var(--border-thick);
  box-shadow: 12px 12px 0px var(--text-color);
  background-color: #FFFFFF;
  margin: auto;
  padding: 0;
  max-width: 500px;
  width: 90%;
}

.modal::backdrop {
  background-color: rgba(27, 14, 13, 0.7);
  backdrop-filter: blur(4px);
}

.modal-content {
  padding: var(--space-lg);
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.modal h3 {
  font-size: 2.25rem;
  color: var(--accent-color);
}

.modal p {
  font-size: 1.1rem;
  color: var(--text-muted);
}

.loader {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: var(--space-lg);
  background-color: #FFFFFF;
  border: var(--border-thick);
  max-width: 320px;
  margin: 2rem auto;
  text-align: center;
}

.loader-circle {
  width: 50px;
  height: 50px;
  border: 5px solid var(--bg-color);
  border-top: 5px solid var(--accent-color);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.loader span {
  font-family: var(--font-mono);
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-color);
}