/* ==========================================================================
   TASK PULSE - MODERN DARK GLASSMORPHISM DESIGN SYSTEM
   ========================================================================== */

:root {
  --font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Color Tokens */
  --bg-dark: #0b0f19;
  --bg-card: rgba(22, 28, 45, 0.7);
  --bg-card-hover: rgba(30, 39, 62, 0.85);
  --bg-input: rgba(15, 21, 37, 0.8);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(99, 102, 241, 0.4);
  
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-glow: rgba(99, 102, 241, 0.25);
  
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;
  
  /* Priority Colors */
  --priority-low: #10b981;
  --priority-low-bg: rgba(16, 185, 129, 0.12);
  --priority-medium: #3b82f6;
  --priority-medium-bg: rgba(59, 130, 246, 0.12);
  --priority-high: #f59e0b;
  --priority-high-bg: rgba(245, 158, 11, 0.12);
  --priority-urgent: #ef4444;
  --priority-urgent-bg: rgba(239, 68, 68, 0.15);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-dark);
  color: var(--text-main);
  min-height: 100vh;
  line-height: 1.5;
  overflow-x: hidden;
  position: relative;
}

/* Ambient Animated Background Glows */
.background-glow {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  background: 
    radial-gradient(circle at 15% 20%, rgba(99, 102, 241, 0.15) 0%, transparent 45%),
    radial-gradient(circle at 85% 75%, rgba(236, 72, 153, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 50% 50%, rgba(59, 130, 246, 0.08) 0%, transparent 60%);
}

.app-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
  position: relative;
  z-index: 1;
}

/* Header Component */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  flex-wrap: wrap;
  gap: 1.25rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo-icon {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: #fff;
  box-shadow: 0 8px 24px var(--primary-glow);
}

.brand h1 {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #ffffff 0%, #cbd5e1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.subtitle {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 400;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.docker-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(14, 165, 233, 0.12);
  border: 1px solid rgba(14, 165, 233, 0.3);
  color: #38bdf8;
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 600;
}

.docker-badge i {
  font-size: 1rem;
}

/* Button Styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.25rem;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  border: none;
  outline: none;
}

.btn-primary {
  background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #4f46e5 0%, #4338ca 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.6);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

/* Stats Cards Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: var(--transition);
}

.stat-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.total-icon { background: rgba(99, 102, 241, 0.15); color: #818cf8; }
.pending-icon { background: rgba(59, 130, 246, 0.15); color: #60a5fa; }
.completed-icon { background: rgba(16, 185, 129, 0.15); color: #34d399; }
.urgent-icon { background: rgba(239, 68, 68, 0.15); color: #f87171; }

.stat-details {
  display: flex;
  flex-direction: column;
}

.stat-label {
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-weight: 500;
}

.stat-value {
  font-size: 1.625rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.2;
}

/* Control Bar (Search & Filter) */
.control-bar {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.search-box {
  position: relative;
  flex: 1;
  min-width: 260px;
}

.search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dim);
}

.search-box input {
  width: 100%;
  padding: 0.65rem 2.5rem 0.65rem 2.75rem;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-family: inherit;
  font-size: 0.875rem;
  outline: none;
  transition: var(--transition);
}

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

.clear-search-btn {
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.filter-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.custom-select {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.55rem 1rem;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.875rem;
  outline: none;
  cursor: pointer;
  transition: var(--transition);
}

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

/* Task Section & List */
.task-section {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 0.25rem;
}

.section-header h2 {
  font-size: 1.25rem;
  font-weight: 700;
}

.count-badge {
  background: rgba(255, 255, 255, 0.06);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 600;
}

.task-list {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

/* Task Item Card */
.task-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.task-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.task-card.completed {
  opacity: 0.75;
}

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

.task-checkbox {
  appearance: none;
  width: 22px;
  height: 22px;
  border: 2px solid var(--text-dim);
  border-radius: 6px;
  background: transparent;
  cursor: pointer;
  margin-top: 0.2rem;
  position: relative;
  transition: var(--transition);
  flex-shrink: 0;
}

.task-checkbox:checked {
  background: var(--primary);
  border-color: var(--primary);
}

.task-checkbox:checked::after {
  content: '\f00c';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  color: #fff;
  font-size: 0.75rem;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.task-content {
  flex: 1;
  min-width: 0;
}

.task-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.35rem;
}

.task-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
  word-break: break-word;
}

.task-description {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 0.85rem;
  line-height: 1.5;
  white-space: pre-line;
}

.task-meta {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-wrap: wrap;
  font-size: 0.75rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  text-transform: capitalize;
}

.badge-low { background: var(--priority-low-bg); color: var(--priority-low); }
.badge-medium { background: var(--priority-medium-bg); color: var(--priority-medium); }
.badge-high { background: var(--priority-high-bg); color: var(--priority-high); }
.badge-urgent { background: var(--priority-urgent-bg); color: var(--priority-urgent); }

.category-tag {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.due-date {
  color: var(--text-dim);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.task-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  opacity: 0.8;
  transition: var(--transition);
}

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

.icon-btn {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}

.icon-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
}

.icon-btn.delete-btn:hover {
  background: rgba(239, 68, 68, 0.2);
  color: #ef4444;
  border-color: rgba(239, 68, 68, 0.4);
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 4rem 1.5rem;
  background: var(--bg-card);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-lg);
  margin-top: 1rem;
}

.empty-icon {
  font-size: 3rem;
  color: var(--text-dim);
  margin-bottom: 1rem;
}

.empty-state h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.empty-state p {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
}

/* Modal Overlay & Card */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  animation: fadeIn 0.2s ease-out;
}

.modal-overlay.active {
  display: flex !important;
}

.modal-overlay[hidden] {
  display: none !important;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal-card {
  background: #111726;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 520px;
  padding: 1.75rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
  animation: slideUp 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUp {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.modal-header h3 {
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-main);
}

.close-modal-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.25rem;
  cursor: pointer;
  transition: var(--transition);
}

.close-modal-btn:hover {
  color: #fff;
}

/* Form Styles */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1.25rem;
}

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

.form-group label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-muted);
}

.required {
  color: #ef4444;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.7rem 1rem;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-family: inherit;
  font-size: 0.875rem;
  outline: none;
  transition: var(--transition);
}

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

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.85rem;
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

/* Toast Container */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  z-index: 200;
}

.toast {
  background: #1e293b;
  border: 1px solid var(--border-color);
  color: #fff;
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-md);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.875rem;
  animation: toastIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes toastIn {
  from { transform: translateX(50px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* Responsive adjustments */
@media (max-width: 640px) {
  .app-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .header-actions {
    width: 100%;
    justify-content: space-between;
  }

  .control-bar {
    flex-direction: column;
    align-items: stretch;
  }

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