/* ============================================
   TaskPenalty - Design System
   Dark Mode Modern UI
   ============================================ */

/* ---- CSS Variables ---- */
:root {
  /* Colors - Dark Theme */
  --bg-primary: #0f0f1a;
  --bg-secondary: #1a1a2e;
  --bg-card: #16213e;
  --bg-card-hover: #1a2744;
  --bg-input: #0f0f1a;
  --bg-navbar: rgba(15, 15, 26, 0.95);

  --text-primary: #e8e8f0;
  --text-secondary: #a0a0b8;
  --text-muted: #6b6b80;
  --text-white: #ffffff;

  --accent-primary: #6c5ce7;
  --accent-primary-hover: #7e70f0;
  --accent-secondary: #00cec9;
  --accent-danger: #ff6b6b;
  --accent-warning: #ffa726;
  --accent-success: #00e676;
  --accent-info: #29b6f6;

  --gradient-primary: linear-gradient(135deg, #6c5ce7, #a29bfe);
  --gradient-danger: linear-gradient(135deg, #ff6b6b, #ee5a24);
  --gradient-success: linear-gradient(135deg, #00e676, #00cec9);
  --gradient-gold: linear-gradient(135deg, #f7971e, #ffd200);

  --border-color: rgba(255, 255, 255, 0.08);
  --border-light: rgba(255, 255, 255, 0.12);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(108, 92, 231, 0.3);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --font-main: 'Inter', 'Noto Sans JP', -apple-system, sans-serif;

  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
  --transition-slow: 0.4s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-primary-hover);
}

/* ---- Navbar ---- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 64px;
  background: var(--bg-navbar);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
}

.navbar-brand .logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-white);
  font-weight: 700;
  font-size: 1.25rem;
}

.logo-icon {
  font-size: 1.5rem;
  animation: pulse-glow 2s infinite;
}

@keyframes pulse-glow {
  0%, 100% { filter: drop-shadow(0 0 4px rgba(108, 92, 231, 0.6)); }
  50% { filter: drop-shadow(0 0 12px rgba(108, 92, 231, 1)); }
}

.navbar-menu {
  display: flex;
  gap: 0.25rem;
}

.nav-link {
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--text-primary);
  background: rgba(108, 92, 231, 0.1);
}

.nav-link.active {
  color: var(--text-white);
  background: var(--accent-primary);
  box-shadow: var(--shadow-glow);
}

.nav-icon {
  font-size: 1.25rem;
  padding: 0.5rem;
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* ---- User Menu ---- */
.user-menu {
  position: relative;
  cursor: pointer;
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid var(--accent-primary);
  transition: transform var(--transition-fast);
}

.user-avatar:hover {
  transform: scale(1.1);
}

.user-avatar-placeholder {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.875rem;
  color: white;
}

.user-dropdown {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  width: 260px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 0.5rem;
  z-index: 200;
  margin-top: 8px; /* Visual gap */
}

/* Invisible bridge to maintain hover state */
.user-dropdown::before {
  content: '';
  position: absolute;
  top: -12px;
  left: 0;
  width: 100%;
  height: 12px;
}

.user-menu:hover .user-dropdown {
  display: block;
  animation: fadeInDown 0.2s ease;
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.dropdown-header {
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.dropdown-header strong {
  color: var(--text-white);
}

.dropdown-divider {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: 0.25rem 0;
}

.dropdown-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.625rem 0.75rem;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.875rem;
  transition: all var(--transition-fast);
}

.dropdown-item:hover {
  background: rgba(108, 92, 231, 0.1);
  color: var(--text-primary);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-main);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  line-height: 1.4;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 12px rgba(108, 92, 231, 0.4);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(108, 92, 231, 0.6);
  color: white;
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-light);
}

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

.btn-danger {
  background: var(--gradient-danger);
  color: white;
}

.btn-danger:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(255, 107, 107, 0.4);
  color: white;
}

.btn-success {
  background: var(--gradient-success);
  color: var(--bg-primary);
  font-weight: 700;
}

.btn-success:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0, 230, 118, 0.4);
  color: var(--bg-primary);
}

.btn-sm {
  padding: 0.375rem 0.875rem;
  font-size: 0.8rem;
}

.btn-lg {
  padding: 0.875rem 2rem;
  font-size: 1rem;
}

.btn-block {
  width: 100%;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--accent-primary);
  color: var(--accent-primary);
}

.btn-outline:hover {
  background: var(--accent-primary);
  color: white;
}

.btn-google {
  background: white;
  color: #333;
  border: 1px solid #ddd;
  font-weight: 600;
  gap: 0.75rem;
}

.btn-google:hover {
  background: #f5f5f5;
  color: #333;
  box-shadow: var(--shadow-md);
}

/* ---- Badge ---- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.6rem;
  border-radius: 100px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-success { background: rgba(0, 230, 118, 0.15); color: var(--accent-success); }
.badge-danger { background: rgba(255, 107, 107, 0.15); color: var(--accent-danger); }
.badge-warning { background: rgba(255, 167, 38, 0.15); color: var(--accent-warning); }
.badge-info { background: rgba(41, 182, 246, 0.15); color: var(--accent-info); }
.badge-primary { background: rgba(108, 92, 231, 0.15); color: var(--accent-primary); }

/* ---- Cards ---- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: all var(--transition-base);
}

.card:hover {
  border-color: var(--border-light);
  box-shadow: var(--shadow-md);
}

.card-highlight {
  border-left: 3px solid var(--accent-primary);
}

/* ---- Task Card ---- */
.task-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  transition: all var(--transition-base);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.task-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  transition: all var(--transition-base);
}

.task-card.priority-1::before { background: var(--text-muted); }
.task-card.priority-2::before { background: var(--accent-info); }
.task-card.priority-3::before { background: var(--accent-warning); }
.task-card.priority-4::before { background: #ff8a65; }
.task-card.priority-5::before { background: var(--accent-danger); }

.task-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-md), 0 0 0 1px rgba(108, 92, 231, 0.1);
}

.task-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.75rem;
}

.task-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-white);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.task-penalty {
  font-size: 1.1rem;
  font-weight: 800;
  background: var(--gradient-danger);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}

.task-meta {
  display: flex;
  gap: 1rem;
  align-items: center;
  margin-top: 0.5rem;
  flex-wrap: wrap;
}

.task-meta-item {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.task-meta-item .emoji {
  font-size: 0.9rem;
}

.days-remaining {
  font-weight: 600;
}

.days-remaining.overdue {
  color: var(--accent-danger);
}

.days-remaining.urgent {
  color: var(--accent-warning);
}

.days-remaining.safe {
  color: var(--accent-success);
}

/* ---- Progress Bar ---- */
.progress-bar {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 100px;
  overflow: hidden;
  margin-top: 0.75rem;
}

.progress-bar-fill {
  height: 100%;
  border-radius: 100px;
  background: var(--gradient-primary);
  transition: width var(--transition-slow);
  min-width: 0;
}

.progress-bar-fill.complete {
  background: var(--gradient-success);
}

/* ---- Task List ---- */
.task-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* ---- Page Header ---- */
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.page-title {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-white);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.page-subtitle {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 0.25rem;
}

/* ---- Main Content ---- */
.main-content {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem;
  min-height: calc(100vh - 64px - 60px);
}

/* ---- Flash Messages ---- */
.flash {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.875rem 1.25rem;
  margin: 1rem 2rem 0;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  animation: slideDown 0.3s ease;
  max-width: 1100px;
  margin-left: auto;
  margin-right: auto;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-12px); }
  to { opacity: 1; transform: translateY(0); }
}

.flash-notice {
  background: rgba(0, 230, 118, 0.1);
  border: 1px solid rgba(0, 230, 118, 0.3);
  color: var(--accent-success);
}

.flash-alert {
  background: rgba(255, 107, 107, 0.1);
  border: 1px solid rgba(255, 107, 107, 0.3);
  color: var(--accent-danger);
}

.flash-close {
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
  font-size: 1rem;
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.flash-close:hover {
  opacity: 1;
}

/* ---- Footer ---- */
.footer {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
  font-size: 0.8rem;
  border-top: 1px solid var(--border-color);
}

/* ---- Forms ---- */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-input);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-main);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.2);
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
}

.form-select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23a0a0b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.form-hint {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
}

.form-error {
  font-size: 0.78rem;
  color: var(--accent-danger);
  margin-top: 0.35rem;
}

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

/* ---- Priority Stars ---- */
.priority-stars {
  display: flex;
  gap: 0.2rem;
}

.priority-star {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.priority-star.filled {
  color: var(--accent-warning);
}

/* ---- Calendar ---- */
.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
  background: var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.calendar-header {
  background: var(--bg-secondary);
  padding: 0.75rem 0.5rem;
  text-align: center;
  font-weight: 600;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.calendar-day {
  background: var(--bg-card);
  padding: 0.5rem;
  min-height: 100px;
  position: relative;
  transition: background var(--transition-fast);
  display: block;
  cursor: pointer;
}

a.calendar-day {
  color: inherit;
  text-decoration: none;
}

.calendar-day:hover {
  background: var(--bg-card-hover);
}

/* 証拠写真のスタイル */
.completion-evidence {
  margin-top: 1rem;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  max-width: 100%;
}

.evidence-img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 500px;
  object-fit: contain;
}

/* ドロップゾーンのエフェクト */
.drop-zone {
  min-width: 200px;
  padding: 0.75rem 1.5rem;
  border: 2px dashed var(--accent-success);
  background: rgba(0, 184, 148, 0.05);
  transition: all var(--transition-medium);
  text-align: center;
}

.drop-zone:hover {
  background: rgba(0, 184, 148, 0.1);
  transform: translateY(-2px);
}

.drop-zone--over {
  background: var(--accent-success);
  color: white !important;
  border-style: solid;
  transform: scale(1.05);
  box-shadow: 0 0 20px rgba(0, 184, 148, 0.4);
}

.calendar-day.today {
  background: rgba(108, 92, 231, 0.1);
}

.calendar-day.other-month {
  opacity: 0.3;
}

.calendar-date {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.35rem;
}

.calendar-day.today .calendar-date {
  color: var(--accent-primary);
}

.calendar-task {
  font-size: 0.7rem;
  padding: 0.2rem 0.4rem;
  margin-bottom: 0.2rem;
  border-radius: 4px;
  background: rgba(108, 92, 231, 0.2);
  color: var(--accent-primary-hover);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.calendar-task:hover {
  background: rgba(108, 92, 231, 0.35);
}

.calendar-task.overdue {
  background: rgba(255, 107, 107, 0.2);
  color: var(--accent-danger);
}

.calendar-task.completed {
  background: rgba(0, 230, 118, 0.15);
  color: var(--accent-success);
  text-decoration: line-through;
}

.calendar-milestone {
  font-size: 0.65rem;
  padding: 0.15rem 0.35rem;
  margin-bottom: 0.15rem;
  border-radius: 3px;
  background: rgba(0, 206, 201, 0.15);
  color: var(--accent-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.calendar-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.calendar-nav-month {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-white);
  min-width: 160px;
  text-align: center;
}

/* ---- Milestone Checklist ---- */
.milestone-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.milestone-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.milestone-item:hover {
  background: var(--bg-card-hover);
}

.milestone-check {
  width: 22px;
  height: 22px;
  border: 2px solid var(--border-light);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
  background: transparent;
  color: transparent;
  font-size: 0.75rem;
}

.milestone-check:hover {
  border-color: var(--accent-primary);
}

.milestone-check.checked {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: white;
}

.milestone-title {
  flex: 1;
  font-size: 0.9rem;
  color: var(--text-primary);
}

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

.milestone-due {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.milestone-actions {
  display: flex;
  gap: 0.5rem;
}

.milestone-delete {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.85rem;
  padding: 0.25rem;
  border-radius: 4px;
  transition: all var(--transition-fast);
}

.milestone-delete:hover {
  color: var(--accent-danger);
  background: rgba(255, 107, 107, 0.1);
}

/* ---- Stats ---- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  text-align: center;
}

.stat-value {
  font-size: 2rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* ---- Login Page ---- */
.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--bg-primary);
}

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 3rem;
  max-width: 440px;
  width: 100%;
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.login-logo {
  font-size: 3rem;
  margin-bottom: 0.5rem;
}

.login-title {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: 0.5rem;
}

.login-subtitle {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  font-size: 0.9rem;
}

.login-features {
  text-align: left;
  margin: 2rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.login-feature {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.login-feature-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
}

/* ---- Payments ---- */
.charge-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.charge-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
}

.charge-amount {
  font-weight: 700;
  font-size: 1.1rem;
}

.charge-amount.succeeded {
  color: var(--accent-danger);
}

.charge-amount.pending {
  color: var(--accent-warning);
}

.stripe-card-element {
  padding: 1rem;
  background: var(--bg-input);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  margin-bottom: 1.5rem;
}

/* ---- Task Detail ---- */
.task-detail {
  max-width: 800px;
  margin: 0 auto;
}

.task-detail-header {
  margin-bottom: 2rem;
}

.task-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.75rem;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
}

.status-pending { background: rgba(41, 182, 246, 0.15); color: var(--accent-info); }
.status-in_progress { background: rgba(255, 167, 38, 0.15); color: var(--accent-warning); }
.status-completed { background: rgba(0, 230, 118, 0.15); color: var(--accent-success); }
.status-failed { background: rgba(255, 107, 107, 0.15); color: var(--accent-danger); }
.status-charged { background: rgba(255, 107, 107, 0.25); color: var(--accent-danger); }

/* ---- Daily View ---- */
.daily-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.daily-date {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-white);
  min-width: 180px;
  text-align: center;
}

/* ---- Empty State ---- */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--text-muted);
}

.empty-state-icon {
  font-size: 4rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

.empty-state-text {
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
}

/* ---- Utilities ---- */
.text-muted { color: var(--text-muted); }
.text-danger { color: var(--accent-danger); }
.text-success { color: var(--accent-success); }
.text-warning { color: var(--accent-warning); }
.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.gap-1 { gap: 0.5rem; }
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-wrap { flex-wrap: wrap; }
.inline-flex { display: inline-flex; align-items: center; gap: 0.35rem; }

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .navbar {
    padding: 0 1rem;
    flex-wrap: wrap;
    height: auto;
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
  }

  .navbar-menu {
    order: 3;
    width: 100%;
    overflow-x: auto;
    padding: 0.5rem 0;
    -webkit-overflow-scrolling: touch;
  }

  .nav-link {
    font-size: 0.78rem;
    padding: 0.4rem 0.75rem;
  }

  .main-content {
    padding: 1rem;
  }

  .page-title {
    font-size: 1.3rem;
  }

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

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

  .calendar-day {
    min-height: 60px;
    padding: 0.25rem;
  }

  .task-card-header {
    flex-direction: column;
    gap: 0.5rem;
  }
}

/* ---- Animations ---- */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-fadeIn { animation: fadeIn 0.3s ease; }
.animate-slideUp { animation: slideUp 0.4s ease; }

.task-card {
  animation: slideUp 0.3s ease both;
}

.task-card:nth-child(1) { animation-delay: 0.02s; }
.task-card:nth-child(2) { animation-delay: 0.04s; }
.task-card:nth-child(3) { animation-delay: 0.06s; }
.task-card:nth-child(4) { animation-delay: 0.08s; }
.task-card:nth-child(5) { animation-delay: 0.10s; }
.task-card:nth-child(6) { animation-delay: 0.12s; }
.task-card:nth-child(7) { animation-delay: 0.14s; }
.task-card:nth-child(8) { animation-delay: 0.16s; }
.task-card:nth-child(9) { animation-delay: 0.18s; }
.task-card:nth-child(10) { animation-delay: 0.20s; }