/* Material 3 Design Variables */
:root {
  /* --- PALETTE MODE SOMBRE (Défaut) --- */
  --m3e-primary: #D0BCFF;
  --m3e-on-primary: #381E72;
  --m3e-primary-container: #4F378B;
  --m3e-on-primary-container: #EADDFF;
  
  --m3e-secondary-container: #4A4458;
  --m3e-on-secondary-container: #E8DEF8;
  
  --m3e-surface: #07050A; /* Arrière-plan de page ultra profond */
  --m3e-on-surface: #E6E1E5;
  --m3e-on-surface-variant: #CAC4D0;
  
  --m3e-surface-container: #23202E; /* Conteneur de carte plus clair qui ressort nettement */
  --m3e-surface-container-high: #302C3F; /* Tâches et éléments secondaires */
  
  --m3e-outline: #938F99;
  --m3e-outline-variant: #3D3953;
  --m3e-error: #FFB4AB;
  
  --vue-color: #42b883;
  --bun-accent: #f472b6;

  /* Spring Physics Curves */
  --m3e-spring-bounce: cubic-bezier(0.34, 1.65, 0.64, 1);
  --m3e-spring-snap: cubic-bezier(0.175, 0.885, 0.32, 1.25);
  --m3e-spring-gentle: cubic-bezier(0.43, 1.25, 0.4, 0.95);
}

/* --- PALETTE MODE CLAIR (Surcharges) --- */
body.light-theme {
  --m3e-primary: #6750A4;
  --m3e-on-primary: #FFFFFF;
  --m3e-primary-container: #EADDFF;
  --m3e-on-primary-container: #21005D;
  
  --m3e-secondary-container: #E8DEF8;
  --m3e-on-secondary-container: #1D192B;
  
  --m3e-surface: #E3DFEE; /* Fond lavande-grisé légèrement plus sombre */
  --m3e-on-surface: #1C1B22;
  --m3e-on-surface-variant: #49454F;
  
  --m3e-surface-container: #FFFFFF; /* Conteneur de carte blanc pur */
  --m3e-surface-container-high: #F5F2FA; /* Tâches et éléments secondaires */
  
  --m3e-outline: #79747E;
  --m3e-outline-variant: #DDD8E5;
  --m3e-error: #B3261E;
}

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

body {
  background-color: var(--m3e-surface);
  font-family: 'Outfit', sans-serif;
  color: var(--m3e-on-surface);
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 20px;
  transition: background-color 0.4s ease, color 0.4s ease;
}

.app-container {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  box-sizing: border-box;
}

/* Card Asymétrique Morphique M3 Expressive */
.m3e-card {
  position: relative;
  background-color: var(--m3e-surface-container);
  border-radius: 28px 12px 28px 12px;
  width: 100%;
  max-width: 500px;
  padding: 28px;
  box-sizing: border-box;
  border: 1px solid var(--m3e-outline-variant);
  box-shadow: 0 24px 60px -8px rgba(0, 0, 0, 0.5), 
              0 0 1px 1px rgba(255, 255, 255, 0.08) inset;
  transition: border-radius 0.4s var(--m3e-spring-bounce), 
              background-color 0.4s ease, 
              border-color 0.4s ease, 
              box-shadow 0.4s ease;
}

body.light-theme .m3e-card {
  box-shadow: 0 24px 60px -8px rgba(103, 80, 164, 0.12), 
              0 0 1px 1px rgba(255, 255, 255, 0.6) inset;
}

.m3e-card:hover {
  border-radius: 20px 28px 20px 28px;
}

/* Theme toggle button */
.m3e-theme-toggle {
  position: absolute;
  top: 20px;
  right: 20px;
  background: transparent;
  border: none;
  color: var(--m3e-on-surface-variant);
  width: 38px;
  height: 38px;
  border-radius: 100px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s var(--m3e-spring-bounce);
  z-index: 10;
}

.m3e-theme-toggle:hover {
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--m3e-primary);
  transform: scale(1.1) rotate(15deg);
}

body.light-theme .m3e-theme-toggle:hover {
  background-color: rgba(0, 0, 0, 0.03);
}

.m3e-theme-toggle:active {
  transform: scale(0.9);
}

/* Header */
.m3e-header {
  text-align: center;
  margin-bottom: 24px;
}

.m3e-logo-container {
  display: inline-flex;
  align-items: center;
  font-weight: 700;
  font-size: 0.85rem;
  background-color: rgba(0, 0, 0, 0.15);
  padding: 4px 14px;
  border-radius: 10px 18px 10px 18px;
  border: 1px solid var(--m3e-outline-variant);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  transition: all 0.3s var(--m3e-spring-bounce);
}

body.light-theme .m3e-logo-container {
  background-color: rgba(103, 80, 164, 0.05);
}

.m3e-logo-container:hover {
  border-radius: 18px 10px 18px 10px;
  transform: rotate(-2deg);
}

.logo-vue {
  color: var(--vue-color);
}

.logo-separator {
  color: var(--m3e-primary);
  margin: 0 6px;
  font-size: 0.70rem;
}

.logo-bun {
  color: var(--bun-accent);
}

h1 {
  font-size: 1.8rem;
  margin: 0 0 4px 0;
  font-weight: 500;
  letter-spacing: -0.5px;
  color: var(--m3e-on-surface);
}

.subtitle {
  color: var(--m3e-on-surface-variant);
  font-size: 0.8rem;
  margin: 0;
}

/* Stats Bar */
.m3e-stats-bar {
  display: flex;
  justify-content: space-around;
  margin-bottom: 24px;
  background-color: rgba(0, 0, 0, 0.1);
  padding: 12px;
  border-radius: 16px;
  border: 1px solid var(--m3e-outline-variant);
}

body.light-theme .m3e-stats-bar {
  background-color: rgba(0, 0, 0, 0.02);
}

.stat-bubble {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-count {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--m3e-primary);
}

.stat-label {
  font-size: 0.75rem;
  color: var(--m3e-on-surface-variant);
}

/* Form Styles */
.m3e-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 20px;
}

.m3e-textfield-row {
  display: flex;
  gap: 12px;
  align-items: center;
}

.m3e-input-container {
  position: relative;
  height: 48px;
  flex-grow: 1;
  display: flex;
}

.m3e-input-container input {
  width: 100%;
  height: 100%;
  background: transparent;
  border: none;
  outline: none;
  padding: 8px 16px;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--m3e-on-surface);
  box-sizing: border-box;
  z-index: 2;
}

.m3e-outline {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  border: 1px solid var(--m3e-outline-variant);
  border-radius: 12px;
  transition: border-color 0.2s, border-width 0.1s;
  pointer-events: none;
  z-index: 1;
}

.m3e-label {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.9rem;
  color: var(--m3e-on-surface-variant);
  background-color: var(--m3e-surface-container);
  padding: 0 6px;
  transition: all 0.25s var(--m3e-spring-bounce);
  pointer-events: none;
  z-index: 3;
}

.m3e-input-container input:focus ~ .m3e-label,
.m3e-input-container input:not(:placeholder-shown) ~ .m3e-label {
  top: 0;
  font-size: 0.75rem;
  color: var(--m3e-primary);
  font-weight: 600;
}

.m3e-input-container input:focus ~ .m3e-outline {
  border-color: var(--m3e-primary);
  border-width: 1.5px;
}

/* Floating Action Button (FAB) */
.m3e-fab {
  background: var(--m3e-primary-container);
  color: var(--m3e-on-primary-container);
  border: none;
  border-radius: 16px;
  width: 48px;
  height: 48px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  transition: all 0.3s var(--m3e-spring-bounce);
}

.m3e-fab:hover {
  border-radius: 24px;
  transform: scale(1.05);
}

.m3e-options-row {
  display: flex;
  gap: 12px;
}

.m3e-select {
  flex: 1;
  background-color: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--m3e-outline-variant);
  color: var(--m3e-on-surface);
  border-radius: 8px;
  padding: 8px 12px;
  font-family: inherit;
  font-size: 0.8rem;
  outline: none;
  cursor: pointer;
  transition: all 0.3s;
}

body.light-theme .m3e-select {
  background-color: #fff;
}

.m3e-select:focus {
  border-color: var(--m3e-primary);
}

/* Search Row */
.m3e-search-row {
  margin-bottom: 16px;
}

.m3e-search-textfield {
  position: relative;
  height: 40px;
  display: flex;
}

.m3e-search-textfield input {
  width: 100%;
  height: 100%;
  background: transparent;
  border: none;
  outline: none;
  padding: 8px 16px;
  font-family: inherit;
  font-size: 0.85rem;
  color: var(--m3e-on-surface);
  z-index: 2;
}

.m3e-search-outline {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  border: 1px solid var(--m3e-outline-variant);
  border-radius: 12px;
  transition: border-color 0.2s, border-width 0.1s;
  pointer-events: none;
  z-index: 1;
}

.m3e-search-label {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.8rem;
  color: var(--m3e-on-surface-variant);
  background-color: var(--m3e-surface-container);
  padding: 0 6px;
  transition: all 0.25s var(--m3e-spring-bounce);
  pointer-events: none;
  z-index: 3;
}

.m3e-search-textfield input:focus ~ .m3e-search-label,
.m3e-search-textfield input:not(:placeholder-shown) ~ .m3e-search-label {
  top: 0;
  font-size: 0.65rem;
  color: var(--m3e-primary);
  font-weight: 600;
}

.m3e-search-textfield input:focus ~ .m3e-search-outline {
  border-color: var(--m3e-primary);
}

/* Toolbar and Segmented Buttons */
.m3e-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--m3e-outline-variant);
  padding-bottom: 12px;
  margin-bottom: 16px;
}

.m3e-segmented-btn {
  display: flex;
  border: 1px solid var(--m3e-outline-variant);
  border-radius: 100px;
  overflow: hidden;
}

.m3e-segmented-item {
  background: none;
  border: none;
  border-right: 1px solid var(--m3e-outline-variant);
  color: var(--m3e-on-surface-variant);
  padding: 6px 14px;
  font-family: inherit;
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.m3e-segmented-item:last-child {
  border-right: none;
}

.m3e-segmented-item:hover {
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--m3e-on-surface);
}

body.light-theme .m3e-segmented-item:hover {
  background-color: rgba(0, 0, 0, 0.03);
}

.m3e-segmented-item.active {
  background-color: var(--m3e-secondary-container);
  color: var(--m3e-on-secondary-container);
  font-weight: 600;
}

.m3e-btn-text {
  background: none;
  border: none;
  color: var(--m3e-error);
  font-family: inherit;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  padding: 6px 12px;
  border-radius: 8px;
  transition: all 0.2s;
}

.m3e-btn-text:hover {
  background-color: rgba(255, 180, 171, 0.08);
}

body.light-theme .m3e-btn-text:hover {
  background-color: rgba(179, 38, 30, 0.06);
}

/* List & Items */
.m3e-list {
  list-style: none;
  padding: 0;
  margin: 0;
  max-height: 380px;
  overflow-y: auto;
  scrollbar-width: thin;
}

.m3e-list-item {
  display: flex;
  flex-direction: column;
  padding: 12px 16px;
  background-color: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--m3e-outline-variant);
  border-radius: 12px;
  margin-bottom: 8px;
  transition: all 0.3s var(--m3e-spring-bounce), background-color 0.4s ease;
}

body.light-theme .m3e-list-item {
  background-color: rgba(0, 0, 0, 0.01);
}

.m3e-list-item:hover {
  background-color: var(--m3e-surface-container-high);
  border-color: var(--item-color);
  transform: translateY(-1px);
}

.task-view-mode {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.m3e-list-item-content {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  flex-grow: 1;
}

/* Checkbox design */
.m3e-checkbox-container {
  position: relative;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.m3e-checkbox-native {
  position: absolute;
  opacity: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
  z-index: 2;
}

.m3e-checkbox-box {
  width: 18px;
  height: 18px;
  border: 2px solid var(--m3e-outline-variant);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s var(--m3e-spring-bounce);
  background-color: transparent;
  z-index: 1;
}

.m3e-checkbox-checkmark {
  width: 10px;
  height: 10px;
  color: var(--m3e-on-primary);
  opacity: 0;
  transform: scale(0.3) rotate(-15deg);
  transition: all 0.25s var(--m3e-spring-bounce);
}

.m3e-checkbox-native:checked ~ .m3e-checkbox-box {
  background-color: var(--m3e-primary);
  border-color: var(--m3e-primary);
}

.m3e-checkbox-native:checked ~ .m3e-checkbox-box .m3e-checkbox-checkmark {
  opacity: 1;
  transform: scale(1.1) rotate(0deg);
}

/* Text and Meta details */
.m3e-list-item-text-container {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.todo-text {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--m3e-on-surface);
  word-break: break-all;
}

.m3e-meta-row {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--m3e-on-surface-variant);
  margin-top: 4px;
  flex-wrap: wrap;
}

.meta-item {
  display: inline-flex;
  align-items: center;
}

.cat-meta {
  font-weight: 600;
}

.meta-sep {
  opacity: 0.4;
  font-size: 0.65rem;
}

.priority-meta {
  text-transform: capitalize;
}

.priority-meta.basse { color: #81c784; }
body.light-theme .priority-meta.basse { color: #2e7d32; }

.priority-meta.moyenne { color: #ffd54f; }
body.light-theme .priority-meta.moyenne { color: #f57f17; }

.priority-meta.haute { color: #ef5350; font-weight: 700; }
body.light-theme .priority-meta.haute { color: #c62828; font-weight: 700; }

.m3e-list-item.completed {
  opacity: 0.5;
}

.m3e-list-item.completed .todo-text {
  text-decoration: line-through;
  color: var(--m3e-on-surface-variant);
}

/* Delete Button */
.m3e-icon-btn {
  background: none;
  border: none;
  color: var(--m3e-on-surface-variant);
  width: 32px;
  height: 32px;
  border-radius: 100px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  opacity: 0;
}

.m3e-list-item:hover .m3e-icon-btn {
  opacity: 1;
}

.m3e-icon-btn:hover {
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--m3e-error);
}

body.light-theme .m3e-icon-btn:hover {
  background-color: rgba(0, 0, 0, 0.03);
}

/* Empty State & Footer Link */
.empty-state {
  text-align: center;
  padding: 40px 12px;
  color: var(--m3e-on-surface-variant);
}

.empty-icon {
  font-size: 2.5rem;
  margin-bottom: 8px;
}

.m3e-footer-link {
  text-align: center;
  margin-top: 24px;
}

.m3e-footer-link a {
  color: var(--m3e-primary);
  font-size: 0.85rem;
  text-decoration: none;
  font-weight: 600;
  transition: opacity 0.2s;
}

.m3e-footer-link a:hover {
  opacity: 0.8;
}