/* ============================================================
   ToDo App — Premium Dark Design System
   ============================================================ */

/* --- CSS Variables / Design Tokens --- */
:root {
  /* Colors - Dark Theme (default) */
  --bg-primary: #0a0a1a;
  --bg-secondary: #0f0f23;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.08);
  --bg-glass: rgba(255, 255, 255, 0.06);
  --bg-glass-strong: rgba(255, 255, 255, 0.1);
  --bg-input: rgba(255, 255, 255, 0.06);
  --bg-modal: rgba(15, 15, 35, 0.95);

  --text-primary: #f0f0f5;
  --text-secondary: rgba(240, 240, 245, 0.6);
  --text-muted: rgba(240, 240, 245, 0.35);

  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.15);

  --accent-primary: #7c5cfc;
  --accent-primary-glow: rgba(124, 92, 252, 0.3);
  --accent-secondary: #00d4aa;
  --accent-gradient: linear-gradient(135deg, #7c5cfc 0%, #00d4aa 100%);
  --accent-gradient-warm: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);

  --priority-high: #ff6b6b;
  --priority-medium: #ffd93d;
  --priority-low: #6bcb77;

  --success: #00d4aa;
  --danger: #ff6b6b;
  --warning: #ffd93d;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px rgba(124, 92, 252, 0.15);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light Theme */
[data-theme="light"] {
  --bg-primary: #f5f5fa;
  --bg-secondary: #eeeef5;
  --bg-card: rgba(255, 255, 255, 0.8);
  --bg-card-hover: rgba(255, 255, 255, 0.95);
  --bg-glass: rgba(255, 255, 255, 0.6);
  --bg-glass-strong: rgba(255, 255, 255, 0.85);
  --bg-input: rgba(0, 0, 0, 0.04);
  --bg-modal: rgba(255, 255, 255, 0.95);

  --text-primary: #1a1a2e;
  --text-secondary: rgba(26, 26, 46, 0.6);
  --text-muted: rgba(26, 26, 46, 0.35);

  --border-color: rgba(0, 0, 0, 0.08);
  --border-hover: rgba(0, 0, 0, 0.15);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 0 40px rgba(124, 92, 252, 0.08);
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background var(--transition-smooth), color var(--transition-smooth);
}

/* --- Ambient Background --- */
.ambient-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.ambient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.25;
  animation: float 20s ease-in-out infinite;
}

.ambient-orb--1 {
  width: 500px;
  height: 500px;
  background: var(--accent-primary);
  top: -150px;
  right: -100px;
  animation-delay: 0s;
}

.ambient-orb--2 {
  width: 400px;
  height: 400px;
  background: var(--accent-secondary);
  bottom: -100px;
  left: -100px;
  animation-delay: -7s;
}

.ambient-orb--3 {
  width: 300px;
  height: 300px;
  background: #f093fb;
  top: 50%;
  left: 50%;
  animation-delay: -14s;
  opacity: 0.12;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(30px, -30px) scale(1.05); }
  50% { transform: translate(-20px, 20px) scale(0.95); }
  75% { transform: translate(20px, 10px) scale(1.02); }
}

[data-theme="light"] .ambient-orb {
  opacity: 0.12;
}

/* --- App Container --- */
.app-container {
  position: relative;
  z-index: 1;
  max-width: 780px;
  margin: 0 auto;
  padding: 0 20px 100px;
}

/* --- Header --- */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0 20px;
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  margin: 0 -20px;
  padding-left: 20px;
  padding-right: 20px;
}

.header-left {
  display: flex;
  align-items: baseline;
  gap: 16px;
}

.app-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.logo-icon {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: 1.8rem;
  animation: sparkle 3s ease-in-out infinite;
}

@keyframes sparkle {
  0%, 100% { opacity: 1; transform: rotate(0deg); }
  50% { opacity: 0.7; transform: rotate(15deg); }
}

.logo-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-date {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 400;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-glass);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

.btn-icon:hover {
  background: var(--bg-glass-strong);
  color: var(--text-primary);
  border-color: var(--border-hover);
  transform: translateY(-1px);
}

.notification-dot {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 8px;
  height: 8px;
  background: var(--accent-secondary);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.3); opacity: 0.7; }
}

/* --- Stats Bar --- */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
  transition: all var(--transition-fast);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.stat-card:hover {
  background: var(--bg-glass-strong);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.stat-number {
  display: block;
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-card--pending .stat-number {
  background: linear-gradient(135deg, #ffd93d, #f39c12);
  -webkit-background-clip: text;
  background-clip: text;
}

.stat-card--completed .stat-number {
  background: linear-gradient(135deg, #00d4aa, #00b894);
  -webkit-background-clip: text;
  background-clip: text;
}

.stat-card--overdue .stat-number {
  background: linear-gradient(135deg, #ff6b6b, #ee5a24);
  -webkit-background-clip: text;
  background-clip: text;
}

.stat-label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 4px;
  font-weight: 500;
}

/* --- Filters Bar --- */
.filters-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.search-wrapper {
  position: relative;
  flex: 1;
  min-width: 200px;
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 10px 14px 10px 42px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  background: var(--bg-glass);
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 0.9rem;
  outline: none;
  transition: all var(--transition-fast);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.search-input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--accent-primary-glow);
  background: var(--bg-glass-strong);
}

.search-input::placeholder {
  color: var(--text-muted);
}

.filter-pills {
  display: flex;
  gap: 6px;
}

.filter-pill {
  padding: 8px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  background: var(--bg-glass);
  color: var(--text-secondary);
  font-family: var(--font-family);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.filter-pill:hover {
  border-color: var(--accent-primary);
  color: var(--text-primary);
}

.filter-pill.active {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: #fff;
  box-shadow: 0 4px 15px var(--accent-primary-glow);
}

.filter-selects {
  display: flex;
  gap: 8px;
}

.filter-select {
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-glass);
  color: var(--text-secondary);
  font-family: var(--font-family);
  font-size: 0.82rem;
  cursor: pointer;
  outline: none;
  transition: all var(--transition-fast);
  -webkit-appearance: none;
  appearance: none;
}

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

.filter-select option {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

/* --- Task List --- */
.task-list-container {
  position: relative;
}

.task-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* --- Task Card --- */
.task-card {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  animation: slideIn 0.3s ease forwards;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.task-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.task-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  border-radius: 3px 0 0 3px;
  transition: background var(--transition-fast);
}

.task-card[data-priority="high"]::before { background: var(--priority-high); }
.task-card[data-priority="medium"]::before { background: var(--priority-medium); }
.task-card[data-priority="low"]::before { background: var(--priority-low); }

.task-card.completed {
  opacity: 0.5;
}

.task-card.completed .task-title {
  text-decoration: line-through;
  color: var(--text-muted);
}

/* Checkbox */
.task-checkbox {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border: 2px solid var(--border-hover);
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  margin-top: 2px;
  background: transparent;
}

.task-checkbox:hover {
  border-color: var(--accent-primary);
  background: var(--accent-primary-glow);
}

.task-checkbox.checked {
  background: var(--accent-gradient);
  border-color: transparent;
}

.task-checkbox.checked svg {
  display: block;
}

.task-checkbox svg {
  display: none;
  width: 14px;
  height: 14px;
  color: #fff;
}

/* Task Content */
.task-content {
  flex: 1;
  min-width: 0;
}

.task-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
  transition: all var(--transition-fast);
}

.task-description {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.task-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.task-meta-item {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.task-meta-item.overdue {
  color: var(--priority-high);
  font-weight: 600;
}

.task-category-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 500;
  background: var(--bg-glass-strong);
  color: var(--text-secondary);
}

.task-priority-badge {
  display: inline-flex;
  align-items: center;
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.task-priority-badge[data-priority="high"] { background: var(--priority-high); }
.task-priority-badge[data-priority="medium"] { background: var(--priority-medium); }
.task-priority-badge[data-priority="low"] { background: var(--priority-low); }

/* Task Actions */
.task-actions {
  display: flex;
  gap: 4px;
  opacity: 0;
  transition: opacity var(--transition-fast);
  flex-shrink: 0;
}

.task-card:hover .task-actions {
  opacity: 1;
}

.task-action-btn {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.task-action-btn:hover {
  background: var(--bg-glass-strong);
  color: var(--text-primary);
}

.task-action-btn--delete:hover {
  background: rgba(255, 107, 107, 0.15);
  color: var(--danger);
}

/* --- Empty State --- */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.empty-icon {
  font-size: 4rem;
  margin-bottom: 16px;
  opacity: 0.5;
}

.empty-state h3 {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.empty-state p {
  font-size: 0.9rem;
}

/* --- FAB Button --- */
.fab {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 60px;
  height: 60px;
  border: none;
  border-radius: 50%;
  background: var(--accent-gradient);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 32px var(--accent-primary-glow), var(--shadow-md);
  transition: all var(--transition-normal);
  z-index: 20;
}

.fab:hover {
  transform: scale(1.1) rotate(90deg);
  box-shadow: 0 12px 40px var(--accent-primary-glow), var(--shadow-lg);
}

.fab:active {
  transform: scale(0.95);
}

/* --- Modal --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
  padding: 20px;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  background: var(--bg-modal);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  transform: scale(0.9) translateY(20px);
  transition: transform var(--transition-normal);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.modal-overlay.active .modal {
  transform: scale(1) translateY(0);
}

.modal--small {
  max-width: 400px;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 24px 0;
}

.modal-header h2 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.modal-close {
  border: none;
  background: transparent;
}

.modal-body {
  padding: 20px 24px 24px;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
}

/* --- Form Elements --- */
.form-group {
  margin-bottom: 18px;
}

.form-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
  letter-spacing: 0.01em;
}

.form-input {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-input);
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 0.9rem;
  outline: none;
  transition: all var(--transition-fast);
}

.form-input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--accent-primary-glow);
}

.form-input::placeholder {
  color: var(--text-muted);
}

.form-textarea {
  resize: vertical;
  min-height: 80px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

/* Toggle Switch */
.toggle-row {
  display: flex;
  gap: 20px;
}

.toggle-label {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.toggle-label input[type="checkbox"] {
  display: none;
}

.toggle-switch {
  position: relative;
  width: 42px;
  height: 24px;
  border-radius: var(--radius-full);
  background: var(--bg-glass-strong);
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.toggle-switch::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--text-muted);
  transition: all var(--transition-fast);
}

.toggle-label input:checked + .toggle-switch {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
}

.toggle-label input:checked + .toggle-switch::after {
  transform: translateX(18px);
  background: #fff;
}

/* --- Buttons --- */
.btn {
  padding: 10px 24px;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-family);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn--primary {
  background: var(--accent-gradient);
  color: #fff;
  box-shadow: 0 4px 15px var(--accent-primary-glow);
}

.btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px var(--accent-primary-glow);
}

.btn--secondary {
  background: var(--bg-glass-strong);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

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

.btn--danger {
  background: linear-gradient(135deg, #ff6b6b, #ee5a24);
  color: #fff;
}

.btn--danger:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(255, 107, 107, 0.3);
}

/* --- Delete Modal --- */
.delete-message {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 8px;
}

/* --- Toast --- */
.toast-container {
  position: fixed;
  bottom: 100px;
  right: 24px;
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  border-radius: var(--radius-md);
  background: var(--bg-modal);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  color: var(--text-primary);
  font-size: 0.88rem;
  font-weight: 500;
  animation: toastIn 0.3s ease forwards;
  max-width: 360px;
}

.toast--success {
  border-left: 3px solid var(--success);
}

.toast--error {
  border-left: 3px solid var(--danger);
}

.toast--warning {
  border-left: 3px solid var(--warning);
}

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes toastOut {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(30px);
  }
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border-hover);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* --- Selection --- */
::selection {
  background: var(--accent-primary);
  color: #fff;
}

/* --- Responsive --- */
@media (max-width: 640px) {
  .app-container {
    padding: 0 14px 100px;
  }

  .app-header {
    margin: 0 -14px;
    padding-left: 14px;
    padding-right: 14px;
  }

  .header-left {
    flex-direction: column;
    gap: 2px;
  }

  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .stat-card {
    padding: 12px;
  }

  .stat-number {
    font-size: 1.4rem;
  }

  .filters-bar {
    flex-direction: column;
    gap: 10px;
  }

  .search-wrapper {
    min-width: 100%;
  }

  .filter-pills {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .filter-selects {
    width: 100%;
  }

  .filter-select {
    flex: 1;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .toggle-row {
    flex-direction: column;
    gap: 12px;
  }

  .task-actions {
    opacity: 1;
  }

  .fab {
    bottom: 24px;
    right: 20px;
    width: 56px;
    height: 56px;
  }

  .modal {
    max-height: 95vh;
    border-radius: var(--radius-lg);
  }

  .toast-container {
    left: 14px;
    right: 14px;
    bottom: 90px;
  }

  .toast {
    max-width: 100%;
  }
}

@media (max-width: 380px) {
  .app-logo {
    font-size: 1.25rem;
  }

  .stat-number {
    font-size: 1.2rem;
  }

  .task-card {
    padding: 14px;
    gap: 10px;
  }
}

/* --- Sushi Battle --- */
.sushi-modal {
  max-width: 600px;
}

.sushi-battle-container {
  display: flex;
  gap: 20px;
  justify-content: space-between;
  margin-top: 20px;
}

.sushi-player-card {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 30px 20px;
  text-align: center;
  position: relative;
  transition: all var(--transition-normal);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.sushi-player-card.winning {
  border-color: var(--accent-primary);
  box-shadow: 0 0 30px var(--accent-primary-glow);
  transform: translateY(-5px);
}

.sushi-player-name {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 20px;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.sushi-score-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 15px;
}

.sushi-score {
  font-size: 5rem;
  font-weight: 800;
  line-height: 1;
  color: var(--text-primary);
  text-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

.sushi-controls {
  display: flex;
  gap: 15px;
  justify-content: center;
  margin-top: 15px;
}

.btn-sushi-action {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  border: none;
  font-size: 1.5rem;
  font-weight: bold;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  color: white;
}

.btn-sushi-add {
  background: linear-gradient(135deg, #00d4aa 0%, #00b894 100%);
  box-shadow: 0 4px 15px rgba(0, 212, 170, 0.3);
}

.btn-sushi-add:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(0, 212, 170, 0.4);
}

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

.btn-sushi-remove {
  background: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
  box-shadow: 0 4px 15px rgba(255, 107, 107, 0.3);
  width: 40px;
  height: 40px;
  font-size: 1.2rem;
  margin-top: 5px;
}

.btn-sushi-remove:hover {
  transform: scale(1.1);
}

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

.crown-icon {
  position: absolute;
  top: -25px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 3rem;
  filter: drop-shadow(0 4px 10px rgba(255, 217, 61, 0.5));
  animation: float-crown 2s ease-in-out infinite;
}

@keyframes float-crown {
  0%, 100% { transform: translate(-50%, 0) rotate(-10deg); }
  50% { transform: translate(-50%, -10px) rotate(10deg); }
}

@media (max-width: 640px) {
  .sushi-battle-container {
    flex-direction: column;
    gap: 30px;
  }
  .sushi-player-card {
    padding: 20px;
  }
  .crown-icon {
    top: -20px;
    font-size: 2.5rem;
  }
/* --- Auth Overlay --- */
.auth-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-main);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.auth-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.auth-card {
  width: 100%;
  max-width: 400px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 30px;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.auth-tabs {
  display: flex;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

.auth-tab {
  flex: 1;
  padding: 10px;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-weight: 600;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
}

.auth-tab.active {
  color: var(--accent-primary);
  border-bottom-color: var(--accent-primary);
}

.auth-form {
  display: none;
  animation: slideIn 0.3s ease;
}

.auth-form.active {
  display: block;
}