* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Dark theme (default) */
  --bg-primary: #1a1a1a;
  --bg-secondary: #2d2d2d;
  --bg-tertiary: #3a3a3a;
  --text-primary: #ffffff;
  --text-secondary: #b0b0b0;
  --accent-color: #3b2fa7;
  --accent-secondary: #2b73ad;
  --border-color: #404040;
  --shadow-color: rgba(0, 0, 0, 0.3);
  --success-color: #48bb78;
  --warning-color: #ed8936;
  --danger-color: #f56565;
  --info-color: #4299e1;
}

body {
  font-family: "Inter", "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(
    135deg,
    var(--accent-color) 0%,
    var(--accent-secondary) 100%
  );
  min-height: 100vh;
  color: var(--text-primary);
  transition: all 0.3s ease;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

header {
  background: rgba(45, 45, 45, 0.95);
  border-radius: 15px;
  padding: 25px;
  padding-bottom: 10px;
  margin-bottom: 20px;
  box-shadow: 0 8px 32px var(--shadow-color);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
}

.header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 20px;
}

header h1 {
  color: var(--text-primary);
  font-size: 2.5rem;
  margin: 0;
}

header h1 i {
  color: var(--accent-color);
  margin-right: 10px;
}

.profile-chip {
  background: linear-gradient(
    135deg,
    var(--accent-color) 0%,
    var(--accent-secondary) 100%
  );
  color: white;
  padding: 12px 20px;
  border-radius: 25px;
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.profile-chip:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.profile-chip i {
  font-size: 1.1rem;
}

.profile-chip span {
  font-weight: 600;
  font-size: 1rem;
}

.profile-chip .fa-edit {
  font-size: 0.9rem;
  opacity: 0.8;
}

.stats {
  display: flex;
  flex-direction: row;
  gap: 20px;
  justify-content: center;
}

.stats-column {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.stat-item {
  text-align: center;
  padding: 10px 10px;
  background: linear-gradient(
    135deg,
    var(--bg-tertiary) 0%,
    var(--bg-secondary) 100%
  );
  border-radius: 8px;
  min-width: 120px;
  box-shadow: 0 4px 6px var(--shadow-color);
  border: 1px solid var(--border-color);
}

.stat-label {
  display: block;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 5px;
}

.stat-item span:last-child {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--text-primary);
}

/* Color styling for specific stat items */
.absent-days-stat .stat-label {
  color: #dc2626 !important;
}

.present-days-stat .stat-label {
  color: #16a34a !important;
}

.attendance-percentage-stat {
  border-color: #a3f50b !important;
}

.info-block {
  background: rgba(45, 45, 45, 0.95);
  border-radius: 15px;
  padding: 25px;
  margin-bottom: 20px;
  box-shadow: 0 8px 32px var(--shadow-color);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  display: flex;
  gap: 30px;
  align-items: flex-start;
}

.info-section {
  flex: 1;
}

.stats-section {
  display: flex;
  justify-content: center;
  align-items: center;
  flex: 0.8;
}

.center-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  flex: 1;
}

.controls-section {
  display: flex;
  justify-content: center;
  align-items: center;
  flex: 0.8;
}

.month-navigation {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  gap: 20px;
}

.nav-btn {
  background: #667eea;
  color: white;
  border: none;
  padding: 12px 16px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1.1rem;
  transition: all 0.3s ease;
}

.nav-btn:hover {
  background: #5a67d8;
  transform: translateY(-2px);
}

#currentMonth {
  font-size: 1.8rem;
  color: var(--text-primary);
  min-width: 200px;
  text-align: center;
}

.data-controls {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.control-btn {
  background: var(--success-color);
  color: white;
  border: none;
  padding: 12px 20px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.control-btn:hover {
    background: #308a5a;
    transform: translateY(-2px);
}

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

.control-btn.danger:hover {
  background: #e53e3e;
}

.legend {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 15px;
  justify-items: center;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.legend-color {
  width: 20px;
  height: 20px;
  border-radius: 4px;
  border: 2px solid rgba(0, 0, 0, 0.1);
}

.full-present {
  background: #48bb78;
}

.forenoon-present {
  background: #4299e1;
}

.afternoon-present {
  background: #ed8936;
}

.absent {
  background: #f56565;
}

.six-months-container {
  background: rgba(45, 45, 45, 0.95);
  border-radius: 15px;
  padding: 25px;
  margin-bottom: 20px;
  box-shadow: 0 8px 32px var(--shadow-color);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
}

.six-months-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.month-calendar {
  background: rgba(58, 58, 58, 0.8);
  border-radius: 10px;
  padding: 15px;
  box-shadow: 0 4px 15px var(--shadow-color);
  border: 1px solid var(--border-color);
}

.month-title {
  text-align: center;
  font-size: 1.2rem;
  font-weight: bold;
  color: var(--text-primary);
  margin-bottom: 15px;
  padding: 8px;
  background: linear-gradient(
    135deg,
    var(--bg-tertiary) 0%,
    var(--bg-secondary) 100%
  );
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.calendar-header {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
  margin-bottom: 8px;
}

.calendar-header div {
  text-align: center;
  font-weight: bold;
  color: var(--text-primary);
  padding: 6px;
  font-size: 0.8rem;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
}

.calendar-day {
  aspect-ratio: 1;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-weight: bold;
  transition: all 0.3s ease;
  position: relative;
  background: var(--bg-tertiary);
  font-size: 0.8rem;
  color: var(--text-primary);
}

.calendar-day:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.calendar-day.other-month {
  color: var(--text-secondary);
  background: var(--bg-secondary);
}

.calendar-day.today {
  border-color: var(--accent-color);
  background: rgba(102, 126, 234, 0.2);
}

.calendar-day.full-present {
  background: #48bb78;
  color: white;
  border-color: #38a169;
}

.calendar-day.forenoon-present {
  background: #4299e1;
  color: white;
  border-color: #3182ce;
}

.calendar-day.afternoon-present {
  background: #ed8936;
  color: white;
  border-color: #dd6b20;
}

.calendar-day.absent {
  background: #f56565;
  color: white;
  border-color: #e53e3e;
}

.calendar-day::after {
  content: attr(data-classes);
  position: absolute;
  bottom: 1px;
  right: 1px;
  font-size: 0.5rem;
  opacity: 0.8;
}

.instructions {
  text-align: center;
}

.instructions p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin: 0;
}

.instructions i {
  color: var(--accent-color);
  margin-right: 8px;
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 10px;
  }

  .header-top {
    flex-direction: column;
    text-align: center;
  }

  header h1 {
    font-size: 2rem;
  }

  .info-block {
    flex-direction: column;
    gap: 20px;
  }

  .stats {
    flex-direction: row;
    gap: 10px;
  }

  .data-controls {
    flex-direction: row !important;
    justify-content: center;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    width: 100%;
  }

  .stat-item {
    min-width: 100px;
  }

  .month-navigation {
    flex-direction: row !important;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    width: 100%;
  }

  .month-navigation h2 {
    flex: 1;
    text-align: center;
    font-size: 1.1rem;
    margin: 0 5px;
  }

  .legend {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .six-months-container {
    padding: 15px;
  }

  .six-months-grid {
    grid-template-columns: 1fr !important;
    gap: 15px;
  }

  .calendar-day {
    font-size: 0.7rem;
  }

  .stats-section,
  .controls-section {
    justify-content: center;
    align-items: center;
    text-align: center;
    width: 100%;
  }
  .stats {
    flex-direction: column;
    align-items: center;
  }

  .stats-column {
    flex-direction: row;
    gap: 10px;
  }
  .data-controls {
    align-items: center;
  }
}

@media (max-width: 480px) {
  header h1 {
    font-size: 1.5rem;
  }

  #currentSixMonths {
    font-size: 1.4rem;
  }

  .six-months-grid {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .calendar-day {
    font-size: 0.6rem;
  }

  .calendar-day::after {
    font-size: 0.4rem;
  }
  .month-navigation h2 {
    font-size: 1rem;
  }
}

/* Modal Styles */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(5px);
}

.modal-content {
  background: var(--bg-secondary);
  margin: 5% auto;
  padding: 0;
  border-radius: 15px;
  width: 90%;
  max-width: 500px;
  box-shadow: 0 8px 32px var(--shadow-color);
  border: 1px solid var(--border-color);
  animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
  from {
    transform: translateY(-50px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
  color: var(--text-primary);
  font-size: 1.5rem;
  margin: 0;
}

.modal-header h3 i {
  color: var(--accent-color);
  margin-right: 10px;
}

.close-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 5px;
  border-radius: 5px;
  transition: all 0.3s ease;
}

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

.modal-body {
  padding: 25px;
}

.setting-group {
  margin-bottom: 25px;
}

.setting-group:last-child {
  margin-bottom: 0;
}

.setting-group label {
  display: block;
  color: var(--text-primary);
  font-weight: bold;
  margin-bottom: 15px;
  font-size: 1.1rem;
}

.theme-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  max-height: 400px;
  overflow-y: auto;
}

.theme-btn {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 2px solid var(--border-color);
  padding: 15px;
  border-radius: 10px;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.theme-btn:hover {
  border-color: var(--accent-color);
  transform: translateY(-2px);
}

.theme-btn.active {
  border-color: var(--accent-color);
  background: rgba(102, 126, 234, 0.2);
}

/* Theme Variations */
body[data-theme="light"] {
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-tertiary: #e9ecef;
  --text-primary: #212529;
  --text-secondary: #6c757d;
  --accent-color: #007bff;
  --accent-secondary: #0056b3;
  --border-color: #dee2e6;
  --shadow-color: rgba(0, 0, 0, 0.1);
  --success-color: #28a745;
  --warning-color: #ffc107;
  --danger-color: #dc3545;
  --info-color: #17a2b8;
}

body[data-theme="blue"] {
  --bg-primary: #1e3a8a;
  --bg-secondary: #1e40af;
  --bg-tertiary: #3b82f6;
  --text-primary: #ffffff;
  --text-secondary: #bfdbfe;
  --accent-color: #60a5fa;
  --accent-secondary: #3b82f6;
  --border-color: #1d4ed8;
  --shadow-color: rgba(0, 0, 0, 0.3);
}

body[data-theme="green"] {
  --bg-primary: #064e3b;
  --bg-secondary: #065f46;
  --bg-tertiary: #047857;
  --text-primary: #ffffff;
  --text-secondary: #a7f3d0;
  --accent-color: #10b981;
  --accent-secondary: #059669;
  --border-color: #065f46;
  --shadow-color: rgba(0, 0, 0, 0.3);
}

body[data-theme="fire"] {
  --bg-primary: #7c2d12;
  --bg-secondary: #991b1b;
  --bg-tertiary: #dc2626;
  --text-primary: #ffffff;
  --text-secondary: #fecaca;
  --accent-color: #f97316;
  --accent-secondary: #ea580c;
  --border-color: #991b1b;
  --shadow-color: rgba(0, 0, 0, 0.3);
}

body[data-theme="ocean"] {
  --bg-primary: #0c4a6e;
  --bg-secondary: #0369a1;
  --bg-tertiary: #0891b2;
  --text-primary: #ffffff;
  --text-secondary: #bae6fd;
  --accent-color: #06b6d4;
  --accent-secondary: #0891b2;
  --border-color: #0c4a6e;
  --shadow-color: rgba(0, 0, 0, 0.3);
}

body[data-theme="purple"] {
  --bg-primary: #581c87;
  --bg-secondary: #7c3aed;
  --bg-tertiary: #a855f7;
  --text-primary: #ffffff;
  --text-secondary: #e9d5ff;
  --accent-color: #c084fc;
  --accent-secondary: #a855f7;
  --border-color: #581c87;
  --shadow-color: rgba(0, 0, 0, 0.3);
}

body[data-theme="orange"] {
  --bg-primary: #9a3412;
  --bg-secondary: #c2410c;
  --bg-tertiary: #ea580c;
  --text-primary: #ffffff;
  --text-secondary: #fed7aa;
  --accent-color: #fb923c;
  --accent-secondary: #f97316;
  --border-color: #9a3412;
  --shadow-color: rgba(0, 0, 0, 0.3);
}

body[data-theme="pink"] {
  --bg-primary: #831843;
  --bg-secondary: #be185d;
  --bg-tertiary: #ec4899;
  --text-primary: #ffffff;
  --text-secondary: #fce7f3;
  --accent-color: #f472b6;
  --accent-secondary: #ec4899;
  --border-color: #831843;
  --shadow-color: rgba(0, 0, 0, 0.3);
}

body[data-theme="gold"] {
  --bg-primary: #92400e;
  --bg-secondary: #b45309;
  --bg-tertiary: #d97706;
  --text-primary: #ffffff;
  --text-secondary: #fef3c7;
  --accent-color: #fbbf24;
  --accent-secondary: #f59e0b;
  --border-color: #92400e;
  --shadow-color: rgba(0, 0, 0, 0.3);
}

body[data-theme="coffee"] {
  --bg-primary: #451a03;
  --bg-secondary: #78350f;
  --bg-tertiary: #92400e;
  --text-primary: #ffffff;
  --text-secondary: #fef3c7;
  --accent-color: #d97706;
  --accent-secondary: #b45309;
  --border-color: #451a03;
  --shadow-color: rgba(0, 0, 0, 0.3);
}

body[data-theme="forest"] {
  --bg-primary: #14532d;
  --bg-secondary: #166534;
  --bg-tertiary: #16a34a;
  --text-primary: #ffffff;
  --text-secondary: #bbf7d0;
  --accent-color: #4ade80;
  --accent-secondary: #22c55e;
  --border-color: #14532d;
  --shadow-color: rgba(0, 0, 0, 0.3);
}

body[data-theme="sunset"] {
  --bg-primary: #7c2d12;
  --bg-secondary: #c2410c;
  --bg-tertiary: #ea580c;
  --text-primary: #ffffff;
  --text-secondary: #fed7aa;
  --accent-color: #fb923c;
  --accent-secondary: #f97316;
  --border-color: #7c2d12;
  --shadow-color: rgba(0, 0, 0, 0.3);
}

body[data-theme="night"] {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --text-primary: #ffffff;
  --text-secondary: #cbd5e1;
  --accent-color: #64748b;
  --accent-secondary: #475569;
  --border-color: #1e293b;
  --shadow-color: rgba(0, 0, 0, 0.3);
}

body[data-theme="rainbow"] {
  --bg-primary: #581c87;
  --bg-secondary: #7c3aed;
  --bg-tertiary: #a855f7;
  --text-primary: #ffffff;
  --text-secondary: #e9d5ff;
  --accent-color: #c084fc;
  --accent-secondary: #a855f7;
  --border-color: #581c87;
  --shadow-color: rgba(0, 0, 0, 0.3);
}

body[data-theme="galaxy"] {
  --bg-primary: #1e1b4b;
  --bg-secondary: #312e81;
  --bg-tertiary: #4338ca;
  --text-primary: #ffffff;
  --text-secondary: #c7d2fe;
  --accent-color: #6366f1;
  --accent-secondary: #4f46e5;
  --border-color: #1e1b4b;
  --shadow-color: rgba(0, 0, 0, 0.3);
}

body[data-theme="earth"] {
  --bg-primary: #365314;
  --bg-secondary: #4d7c0f;
  --bg-tertiary: #65a30d;
  --text-primary: #ffffff;
  --text-secondary: #d9f99d;
  --accent-color: #84cc16;
  --accent-secondary: #65a30d;
  --border-color: #365314;
  --shadow-color: rgba(0, 0, 0, 0.3);
}

body[data-theme="space"] {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --text-primary: #ffffff;
  --text-secondary: #cbd5e1;
  --accent-color: #64748b;
  --accent-secondary: #475569;
  --border-color: #1e293b;
  --shadow-color: rgba(0, 0, 0, 0.3);
}

body[data-theme="crystal"] {
  --bg-primary: #0c4a6e;
  --bg-secondary: #0369a1;
  --bg-tertiary: #0891b2;
  --text-primary: #ffffff;
  --text-secondary: #bae6fd;
  --accent-color: #06b6d4;
  --accent-secondary: #0891b2;
  --border-color: #0c4a6e;
  --shadow-color: rgba(0, 0, 0, 0.3);
}

body[data-theme="aurora"] {
  --bg-primary: #064e3b;
  --bg-secondary: #065f46;
  --bg-tertiary: #047857;
  --text-primary: #ffffff;
  --text-secondary: #a7f3d0;
  --accent-color: #10b981;
  --accent-secondary: #059669;
  --border-color: #064e3b;
  --shadow-color: rgba(0, 0, 0, 0.3);
}

body[data-theme="mountain"] {
  --bg-primary: #374151;
  --bg-secondary: #4b5563;
  --bg-tertiary: #6b7280;
  --text-primary: #ffffff;
  --text-secondary: #d1d5db;
  --accent-color: #9ca3af;
  --accent-secondary: #6b7280;
  --border-color: #374151;
  --shadow-color: rgba(0, 0, 0, 0.3);
}

body[data-theme="desert"] {
  --bg-primary: #92400e;
  --bg-secondary: #b45309;
  --bg-tertiary: #d97706;
  --text-primary: #ffffff;
  --text-secondary: #fef3c7;
  --accent-color: #fbbf24;
  --accent-secondary: #f59e0b;
  --border-color: #92400e;
  --shadow-color: rgba(0, 0, 0, 0.3);
}

body[data-theme="tropical"] {
  --bg-primary: #14532d;
  --bg-secondary: #166534;
  --bg-tertiary: #16a34a;
  --text-primary: #ffffff;
  --text-secondary: #bbf7d0;
  --accent-color: #4ade80;
  --accent-secondary: #22c55e;
  --border-color: #14532d;
  --shadow-color: rgba(0, 0, 0, 0.3);
}

body[data-theme="arctic"] {
  --bg-primary: #0c4a6e;
  --bg-secondary: #0369a1;
  --bg-tertiary: #0891b2;
  --text-primary: #ffffff;
  --text-secondary: #bae6fd;
  --accent-color: #06b6d4;
  --accent-secondary: #0891b2;
  --border-color: #0c4a6e;
  --shadow-color: rgba(0, 0, 0, 0.3);
}

body[data-theme="autumn"] {
  --bg-primary: #7c2d12;
  --bg-secondary: #c2410c;
  --bg-tertiary: #ea580c;
  --text-primary: #ffffff;
  --text-secondary: #fed7aa;
  --accent-color: #fb923c;
  --accent-secondary: #f97316;
  --border-color: #7c2d12;
  --shadow-color: rgba(0, 0, 0, 0.3);
}

body[data-theme="spring"] {
  --bg-primary: #14532d;
  --bg-secondary: #166534;
  --bg-tertiary: #16a34a;
  --text-primary: #ffffff;
  --text-secondary: #bbf7d0;
  --accent-color: #4ade80;
  --accent-secondary: #22c55e;
  --border-color: #14532d;
  --shadow-color: rgba(0, 0, 0, 0.3);
}

body[data-theme="summer"] {
  --bg-primary: #92400e;
  --bg-secondary: #b45309;
  --bg-tertiary: #d97706;
  --text-primary: #ffffff;
  --text-secondary: #fef3c7;
  --accent-color: #fbbf24;
  --accent-secondary: #f59e0b;
  --border-color: #92400e;
  --shadow-color: rgba(0, 0, 0, 0.3);
}

body[data-theme="winter"] {
  --bg-primary: #0c4a6e;
  --bg-secondary: #0369a1;
  --bg-tertiary: #0891b2;
  --text-primary: #ffffff;
  --text-secondary: #bae6fd;
  --accent-color: #06b6d4;
  --accent-secondary: #0891b2;
  --border-color: #0c4a6e;
  --shadow-color: rgba(0, 0, 0, 0.3);
}

body[data-theme="light"] header h1,
body[data-theme="light"] #currentMonth,
body[data-theme="light"] .calendar-header div,
body[data-theme="light"] .legend-item span {
  color: #fff !important;
}

body[data-theme="light"] .legend-color {
  border-color: #fff !important;
}

body[data-theme="light"] .calendar-day {
  color: #000 !important;
}