/* ==========================================================================
   Material 3 Expressive Theme - Skolkollen
   High-Contrast Light Expressive Palette & Clean Typography (Roboto)
   ========================================================================== */

:root {
  /* Dynamic M3 Expressive Core Color Tokens */
  --md-sys-color-primary: #583573;
  --md-sys-color-on-primary: #ffffff;
  --md-sys-color-primary-container: #eddcf8;
  --md-sys-color-on-primary-container: #260041;

  --md-sys-color-secondary: #645b70;
  --md-sys-color-on-secondary: #ffffff;
  --md-sys-color-secondary-container: #eae1f8;
  --md-sys-color-on-secondary-container: #1f182a;

  /* Category Accents for Events */
  /* Läxor / Violett Pill */
  --md-sys-color-homework-container: #eaddff;
  --md-sys-color-on-homework-container: #24005a;

  /* Prov & Viktigt / Varm Korall Pill */
  --md-sys-color-exam-container: #ffdad6;
  --md-sys-color-on-exam-container: #410002;

  /* Aktiviteter & Sport / Mjuk Blå Pill */
  --md-sys-color-sport-container: #e0f2fe;
  --md-sys-color-on-sport-container: #0369a1;

  /* Backgrounds & Surfaces (Hög kontrast mellan bakgrund och kort) */
  --md-sys-color-background: #f4f2f8;
  --md-sys-color-on-background: #1c1b20;

  --md-sys-color-surface-card: #ffffff;
  --md-sys-color-on-surface: #1c1b20;
  --md-sys-color-on-surface-variant: #49454f;
  --md-sys-color-surface-variant: #e7e0ec;

  --md-sys-color-header-bg: #f4f2f8;

  /* Expressive Shapes & Radii */
  --md-shape-corner-small: 10px;
  --md-shape-corner-medium: 18px;
  --md-shape-corner-large: 24px;
  --md-shape-corner-full: 9999px;

  /* Typography Stack */
  --font-family-sans: 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
  --max-width: 1450px;
}

/* Dark Theme Support */
@media (prefers-color-scheme: dark) {
  :root {
    --md-sys-color-background: #141218;
    --md-sys-color-on-background: #e6e1e5;

    --md-sys-color-surface-card: #211f26;
    --md-sys-color-on-surface: #e6e1e5;
    --md-sys-color-on-surface-variant: #c7c4d0;

    --md-sys-color-primary: #d0bcff;
    --md-sys-color-on-primary: #381e50;
    --md-sys-color-primary-container: #4f2868;
    --md-sys-color-on-primary-container: #eddcf8;

    --md-sys-color-header-bg: #141218;

    --md-sys-color-homework-container: #4f2868;
    --md-sys-color-on-homework-container: #eddcf8;

    --md-sys-color-exam-container: #601410;
    --md-sys-color-on-exam-container: #ffdad6;

    --md-sys-color-sport-container: #0c4a6e;
    --md-sys-color-on-sport-container: #e0f2fe;
  }
}

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

body {
  font-family: var(--font-family-sans);
  background-color: var(--md-sys-color-background);
  color: var(--md-sys-color-on-background);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.5;
  -webkit-tap-highlight-color: transparent;
}

/* App Header Component Styling */
.app-header {
  background-color: var(--md-sys-color-header-bg);
  padding: 1rem 1.25rem 0.5rem 1.25rem;
}

.header-container {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.logo-icon {
  font-size: 1.6rem;
  color: var(--md-sys-color-on-primary-container);
  background: var(--md-sys-color-primary-container);
  padding: 0.5rem;
  border-radius: var(--md-shape-corner-medium);
}

.app-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--md-sys-color-on-background);
  letter-spacing: -0.02em;
}

/* Main Layout */
.main-content {
  flex: 1;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 1.25rem 2rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* Calendar Control Bar */
.calendar-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--md-sys-color-surface-card);
  padding: 0.85rem 1.5rem;
  border-radius: var(--md-shape-corner-full);
  box-shadow: 0 2px 10px rgba(0,0,0,0.03);
  border: 1px solid rgba(0,0,0,0.04);
}

.calendar-title-group {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.calendar-icon {
  color: var(--md-sys-color-primary);
  font-size: 1.6rem;
}

.month-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--md-sys-color-on-surface);
  letter-spacing: -0.01em;
}

.today-btn {
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  border: none;
  padding: 0.55rem 1.35rem;
  border-radius: var(--md-shape-corner-full);
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(88, 53, 115, 0.2);
  transition: transform 0.15s ease, filter 0.2s ease;
}

.today-btn:hover {
  filter: brightness(1.1);
}

.today-btn:active {
  transform: scale(0.95);
}

/* Responsive Month Calendar Grid Container */
.calendar-container {
  background-color: var(--md-sys-color-surface-card);
  border-radius: var(--md-shape-corner-large);
  padding: 1.25rem;
  box-shadow: 0 4px 20px rgba(0,0,0,0.03);
  border: 1px solid rgba(0,0,0,0.04);
  overflow-x: auto;
}

/* Grid Layout: 8 Columns (1 for week number + 7 for days) */
.calendar-grid-header {
  display: grid;
  grid-template-columns: 50px repeat(7, minmax(130px, 1fr));
  gap: 10px;
  width: 100%;
}

.weekday-header {
  text-align: center;
  font-weight: 800;
  font-size: 0.85rem;
  color: var(--md-sys-color-primary);
  padding: 0.5rem 0;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.weekday-header.week-col {
  color: var(--md-sys-color-on-surface-variant);
  opacity: 0.5;
}

.calendar-grid-body {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 8px;
}

.calendar-week-row {
  display: grid;
  grid-template-columns: 50px repeat(7, minmax(130px, 1fr));
  gap: 10px;
  width: 100%;
}

/* Veckonummer Badge */
.week-number-cell {
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--md-sys-color-secondary-container);
  border-radius: var(--md-shape-corner-medium);
  min-height: 125px;
}

.week-label {
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--md-sys-color-on-secondary-container);
  transform: rotate(-90deg);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* Dag-kort */
.calendar-day {
  background-color: var(--md-sys-color-background);
  border-radius: var(--md-shape-corner-medium);
  min-height: 125px;
  padding: 0.65rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border: 1px solid transparent;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.calendar-day:hover {
  background-color: #ebe7f3;
  border-color: #d8ceeb;
}

.calendar-day.past-day {
  opacity: 0.45;
}

.calendar-day.out-of-range {
  opacity: 0.25;
}

/* Idag Highlight */
.calendar-day.today {
  background-color: var(--md-sys-color-primary-container);
  border: 2px solid var(--md-sys-color-primary);
  box-shadow: 0 4px 14px rgba(88, 53, 115, 0.18);
}

.day-header-container {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 0.4rem;
  flex-wrap: wrap;
}

.day-number {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--md-sys-color-on-surface);
}

.calendar-day.today .day-number {
  color: var(--md-sys-color-on-primary-container);
}

/* Tydlig M3 Månads-badge vid månadsskifte */
.month-badge {
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  background-color: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  padding: 2px 8px;
  border-radius: var(--md-shape-corner-full);
  letter-spacing: 0.04em;
}

.today-pill {
  font-size: 0.68rem;
  font-weight: 800;
  background-color: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  padding: 2px 8px;
  border-radius: var(--md-shape-corner-full);
  margin-left: auto;
}

.event-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}

/* M3 Event Pills */
.event-pill {
  font-size: 0.78rem;
  padding: 5px 10px;
  border-radius: var(--md-shape-corner-full);
  background-color: var(--md-sys-color-homework-container);
  color: var(--md-sys-color-on-homework-container);
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  cursor: pointer;
  transition: opacity 0.2s ease;
}

.event-pill:hover {
  opacity: 0.85;
}

.event-pill.exam {
  background-color: var(--md-sys-color-exam-container);
  color: var(--md-sys-color-on-exam-container);
}

.event-pill.sport {
  background-color: var(--md-sys-color-sport-container);
  color: var(--md-sys-color-on-sport-container);
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
  .main-content {
    padding: 0.75rem;
  }

  .calendar-controls {
    border-radius: var(--md-shape-corner-large);
    padding: 0.75rem 1rem;
  }

  .calendar-container {
    padding: 0.65rem;
    border-radius: var(--md-shape-corner-medium);
  }

  .calendar-grid-header,
  .calendar-week-row {
    grid-template-columns: 35px repeat(7, minmax(110px, 1fr));
    gap: 6px;
  }

  .week-label {
    font-size: 0.7rem;
  }
}