:root {
  --bg: #0f172a;
  --card: rgba(255,255,255,0.08);
  --text: white;
  --input: rgba(255,255,255,0.1);
  --border: rgba(255,255,255,0.15);
}

body.light-mode {
  --bg: #eef2ff;
  --card: rgba(255,255,255,0.75);
  --text: #111827;
  --input: rgba(255,255,255,0.9);
  --border: rgba(0,0,0,0.08);
}

body {
  background: var(--bg);
  color: var(--text);

  min-height: 100vh;
  overflow-x: hidden;

  font-family: 'Poppins', sans-serif;
  transition: 0.4s ease;
}

.background-blur {
  position: fixed;
  width: 450px;
  height: 450px;
  background: #8b5cf6;

  filter: blur(150px);

  top: -120px;
  right: -120px;

  opacity: 0.18;

  z-index: -1;
}

button {
  cursor: pointer;
}

.main-title {
  font-size: 3rem;
  font-weight: 800;
}

.subtitle {
  opacity: 0.8;
}

.dashboard-card,
.task-input-box,
.glass-box,
.task-card {

  background: var(--card);

  border: 1px solid var(--border);

  color: var(--text);

  backdrop-filter: blur(18px);

  border-radius: 24px;

  padding: 20px;

  transition: 0.4s ease;
}

.dashboard-card h2 {
  font-size: 2.5rem;
  font-weight: bold;
}

.dashboard-card.success {
  border-left: 5px solid #10b981;
}

.dashboard-card.warning {
  border-left: 5px solid #f59e0b;
}

.custom-input {
  background: var(--input);
  border: 1px solid var(--border);
  color: var(--text);
}

.custom-input:focus {
  box-shadow: none;
  border-color: #8b5cf6;
}

.custom-input::placeholder {
  color: rgba(255,255,255,0.7);
}

body,
.dashboard-card,
.task-card,
.glass-box,
.task-input-box,
.custom-input {
  transition: all 0.3s ease;
}

.add-btn {
  background: linear-gradient(135deg, #7c3aed, #9333ea);
  border: none;
  border-radius: 16px;
  color: white;
  font-weight: 600;
  transition: 0.3s ease;
}

.add-btn:hover {
  transform: translateY(-2px);
}

.btn-glass {
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.25);
  color: white;
  padding: 12px 16px;
  border-radius: 16px;
  backdrop-filter: blur(10px);

  display: flex;
  align-items: center;
  justify-content: center;

  width: 52px;
  height: 52px;

  font-size: 20px;

  transition: 0.3s ease;
}

.btn-glass:hover {
  transform: translateY(-2px) scale(1.05);
  background: rgba(255,255,255,0.22);
}

#themeToggle i {
  pointer-events: none;
}

.filter-btn.active {
  background: #8b5cf6;
  color: white;
}

.task-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.task-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  transition: 0.3s ease;
}

.task-card {
  animation: fadeSlide 0.35s ease;
}

@keyframes fadeSlide {

  from {
    opacity: 0;
    transform: translateY(15px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.task-card:hover {

  transform: translateY(-6px) scale(1.01);

  box-shadow:
    0 15px 35px rgba(0,0,0,0.15);

}

.dashboard-card:hover,
.glass-box:hover,
.task-input-box:hover {

  transform: translateY(-4px);

  box-shadow:
    0 12px 30px rgba(0,0,0,0.12);
}

button:hover {
  filter: brightness(1.05);
}

.task-info h5 {
  font-weight: 700;
}

.task-info small {
  opacity: 0.7;
}

.priority {
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}

.priority.low {
  background: rgba(16,185,129,0.2);
}

.priority.medium {
  background: rgba(245,158,11,0.2);
}

.priority.high {
  background: rgba(239,68,68,0.2);
}

.task-actions button {
  border: none;
  width: 45px;
  height: 45px;
  border-radius: 14px;
  margin-left: 10px;
}

.complete-btn {
  background: #10b981;
  color: white;
}

.delete-btn {
  background: #ef4444;
  color: white;
}

.completed-task {
  opacity: 0.6;
  text-decoration: line-through;
}

.custom-progress {
  height: 14px;
  border-radius: 999px;
  background: rgba(255,255,255,0.1);
}

.progress-bar {
  border-radius: 999px;
  background: linear-gradient(90deg,#7c3aed,#06b6d4);
}

.empty-state {
  padding: 40px 20px;
}

.empty-state h4 {
  font-weight: 700;
  margin-top: 20px;
}

.empty-state p {
  opacity: 0.75;
  max-width: 400px;
  margin: auto;
}

.empty-state img {
  width: 160px;
  opacity: 0.8;
}

.custom-toast {
  background: rgba(17,24,39,0.95);
  color: white;
  border-radius: 16px;
}

@media(max-width:768px){

  .main-title {
    font-size: 2.2rem;
  }

  .task-card {
    align-items: flex-start;
  }

}

/* LIGHT MODE FIXES */

body.light-mode .btn-glass {
  background: rgba(255,255,255,0.8);
  color: #111827;
}

body.light-mode .custom-input {
  color: #111827;
}

body.light-mode .custom-input::placeholder {
  color: #6b7280;
}

body.light-mode .glass-box,
body.light-mode .task-input-box,
body.light-mode .dashboard-card,
body.light-mode .task-card {
  color: #111827;
}

body.light-mode .badge.bg-dark {
  background: #d1d5db !important;
  color: #111827 !important;
}

body.light-mode .custom-toast {
  background: white;
  color: black;
}