/* =============================================================================
   STYLESHEET: QUẢN LÝ CÔNG VIỆC & NHẮC HẸN (Dark Theme - DDC Style)
   ============================================================================= */

:root {
  --cv-bg-dark: #0f172a;
  --cv-card-bg: rgba(30, 41, 59, 0.75);
  --cv-card-border: rgba(255, 255, 255, 0.1);
  --cv-text-primary: #f8fafc;
  --cv-text-muted: #94a3b8;
  --cv-accent-blue: #38bdf8;
  --cv-accent-purple: #8b5cf6;
  --cv-danger: #ef4444;
  --cv-warning: #f59e0b;
  --cv-success: #10b981;
}

body.cong-viec-page {
  background-color: var(--cv-bg-dark);
  color: var(--cv-text-primary);
  font-family: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  min-height: 100vh;
  margin: 0;
  padding: 0;
}

.cv-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.5rem;
}

/* Page Header */
.cv-header-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--cv-card-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--cv-card-border);
  border-radius: 1rem;
  padding: 1.25rem 1.75rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
}

.cv-header-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.cv-header-title h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0;
  background: linear-gradient(135deg, #38bdf8, #8b5cf6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.cv-btn-create {
  background: linear-gradient(135deg, #3b82f6, #6366f1);
  color: #fff;
  border: none;
  padding: 0.65rem 1.25rem;
  border-radius: 0.6rem;
  font-weight: 600;
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.35);
}

.cv-btn-create:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.5);
  background: linear-gradient(135deg, #2563eb, #4f46e5);
}

/* Stat KPI Grid */
.cv-kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.cv-kpi-card {
  background: var(--cv-card-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--cv-card-border);
  border-radius: 1rem;
  padding: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.cv-kpi-card:hover {
  transform: translateY(-3px);
  border-color: rgba(56, 189, 248, 0.4);
}

.cv-kpi-info span {
  font-size: 0.85rem;
  color: var(--cv-text-muted);
  display: block;
  margin-bottom: 0.35rem;
  font-weight: 500;
}

.cv-kpi-info h3 {
  font-size: 1.75rem;
  font-weight: 700;
  margin: 0;
}

.cv-kpi-icon {
  width: 50px;
  height: 50px;
  border-radius: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.kpi-total .cv-kpi-icon { background: rgba(56, 189, 248, 0.15); color: #38bdf8; }
.kpi-today .cv-kpi-icon { background: rgba(245, 158, 11, 0.15); color: #f59e0b; }
.kpi-overdue .cv-kpi-icon { background: rgba(239, 68, 68, 0.15); color: #ef4444; }
.kpi-completed .cv-kpi-icon { background: rgba(16, 185, 129, 0.15); color: #10b981; }

/* Filter Bar */
.cv-filter-box {
  background: var(--cv-card-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--cv-card-border);
  border-radius: 1rem;
  padding: 1.25rem;
  margin-bottom: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  box-sizing: border-box;
}

.cv-search-wrap {
  position: relative;
  flex: 1 1 300px;
  max-width: 480px;
  min-width: 220px;
  box-sizing: border-box;
}

.cv-search-wrap input {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--cv-card-border);
  border-radius: 0.6rem;
  padding: 0.6rem 1rem 0.6rem 2.5rem;
  color: var(--cv-text-primary);
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s ease;
}

.cv-search-wrap input:focus {
  border-color: var(--cv-accent-blue);
}

.cv-search-wrap i {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--cv-text-muted);
  pointer-events: none;
}

.cv-filter-groups {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  flex-shrink: 0;
}

.cv-select {
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--cv-card-border);
  border-radius: 0.6rem;
  padding: 0.6rem 1rem;
  color: var(--cv-text-primary);
  font-size: 0.9rem;
  outline: none;
  cursor: pointer;
  box-sizing: border-box;
}

.cv-select:focus {
  border-color: var(--cv-accent-blue);
}

/* Data Table Panel */
.cv-table-panel {
  background: var(--cv-card-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--cv-card-border);
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
}

.cv-table-responsive {
  width: 100%;
  overflow-x: auto;
}

.cv-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.92rem;
}

.cv-table th {
  background: rgba(15, 23, 42, 0.9);
  color: var(--cv-text-muted);
  font-weight: 600;
  padding: 1rem;
  border-bottom: 1px solid var(--cv-card-border);
  white-space: nowrap;
}

.cv-table td {
  padding: 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  vertical-align: middle;
}

.cv-table tbody tr {
  transition: background 0.15s ease;
}

.cv-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.03);
}

/* Row states */
.tr-overdue {
  animation: alertBlink 2s infinite alternate;
}

@keyframes alertBlink {
  0% { background: rgba(239, 68, 68, 0.05); }
  100% { background: rgba(239, 68, 68, 0.18); }
}

/* Badges */
.badge-prio {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.65rem;
  border-radius: 0.4rem;
  font-size: 0.8rem;
  font-weight: 600;
}

.badge-prio-cao { background: rgba(239, 68, 68, 0.2); color: #fca5a5; border: 1px solid rgba(239, 68, 68, 0.4); }
.badge-prio-trung_binh { background: rgba(245, 158, 11, 0.2); color: #fde68a; border: 1px solid rgba(245, 158, 11, 0.4); }
.badge-prio-thap { background: rgba(16, 185, 129, 0.2); color: #6ee7b7; border: 1px solid rgba(16, 185, 129, 0.4); }

.badge-stt {
  display: inline-block;
  padding: 0.3rem 0.65rem;
  border-radius: 0.4rem;
  font-size: 0.8rem;
  font-weight: 600;
}

.badge-stt-cho_xu_ly { background: rgba(148, 163, 184, 0.2); color: #cbd5e1; }
.badge-stt-dang_lam { background: rgba(56, 189, 248, 0.2); color: #7dd3fc; }
.badge-stt-hoan_thanh { background: rgba(16, 185, 129, 0.2); color: #6ee7b7; }
.badge-stt-qua_han { background: rgba(239, 68, 68, 0.25); color: #fca5a5; }

/* Action Buttons */
.cv-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.cv-btn-icon {
  width: 32px;
  height: 32px;
  border-radius: 0.5rem;
  border: 1px solid var(--cv-card-border);
  background: rgba(15, 23, 42, 0.7);
  color: var(--cv-text-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.cv-btn-icon:hover {
  background: var(--cv-accent-blue);
  color: #fff;
  border-color: var(--cv-accent-blue);
}

.cv-btn-icon.btn-delete:hover {
  background: var(--cv-danger);
  border-color: var(--cv-danger);
}

.cv-btn-icon.btn-done:hover {
  background: var(--cv-success);
  border-color: var(--cv-success);
}

/* Modals */
.cv-modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(8px);
  z-index: 10080;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.cv-modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.cv-modal-card {
  background: #1e293b;
  border: 1px solid var(--cv-card-border);
  border-radius: 1.25rem;
  width: 520px;
  max-width: 92vw;
  max-height: 90vh;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
  transform: scale(0.95);
  transition: transform 0.25s ease;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
}

.cv-modal-overlay.active .cv-modal-card {
  transform: scale(1);
}

.cv-modal-header {
  padding: 1.25rem 1.75rem;
  background: rgba(15, 23, 42, 0.6);
  border-bottom: 1px solid var(--cv-card-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-sizing: border-box;
  flex-shrink: 0;
}

.cv-modal-header h4 {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
}

.cv-modal-close {
  background: transparent;
  border: none;
  color: var(--cv-text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}

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

.cv-modal-body {
  padding: 1.5rem 1.75rem;
  overflow-y: auto;
  box-sizing: border-box;
  flex: 1;
}

.cv-form-group {
  margin-bottom: 1.25rem;
  box-sizing: border-box;
}

.cv-form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--cv-text-muted);
  margin-bottom: 0.4rem;
}

.cv-form-group input,
.cv-form-group select,
.cv-form-group textarea {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--cv-card-border);
  border-radius: 0.6rem;
  padding: 0.65rem 1rem;
  color: var(--cv-text-primary);
  font-size: 0.92rem;
  outline: none;
  font-family: inherit;
}

.cv-form-group input:focus,
.cv-form-group select:focus,
.cv-form-group textarea:focus {
  border-color: var(--cv-accent-blue);
}

.cv-modal-footer {
  padding: 1.25rem 1.75rem;
  background: rgba(15, 23, 42, 0.6);
  border-top: 1px solid var(--cv-card-border);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
  box-sizing: border-box;
  flex-shrink: 0;
}

.cv-btn-cancel {
  background: rgba(255, 255, 255, 0.08);
  color: var(--cv-text-primary);
  border: none;
  padding: 0.6rem 1.2rem;
  border-radius: 0.5rem;
  font-weight: 600;
  cursor: pointer;
}

.cv-btn-save {
  background: var(--cv-accent-blue);
  color: #0f172a;
  border: none;
  padding: 0.6rem 1.4rem;
  border-radius: 0.5rem;
  font-weight: 700;
  cursor: pointer;
}

/* Reminder Modal Styling */
.reminder-modal-card {
  border: 2px solid var(--cv-warning);
  box-shadow: 0 0 40px rgba(245, 158, 11, 0.3);
}

.reminder-header {
  background: rgba(245, 158, 11, 0.15);
  border-bottom: 1px solid rgba(245, 158, 11, 0.3);
}

/* Responsive Breakpoints */
@media (max-width: 768px) {
  .cv-filter-box {
    flex-direction: column;
    align-items: stretch;
  }
  .cv-search-wrap {
    max-width: 100%;
    width: 100%;
  }
  .cv-filter-groups {
    width: 100%;
    justify-content: space-between;
  }
  .cv-select {
    flex: 1;
  }
}

.reminder-header h4 {
  color: #fde68a;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Floating Action Button (FAB) */
.cv-fab-create {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, #3b82f6, #6366f1);
  color: #fff;
  border: none;
  font-size: 1.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 25px rgba(59, 130, 246, 0.5);
  cursor: pointer;
  z-index: 10050;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.cv-fab-create:hover {
  transform: scale(1.1);
  box-shadow: 0 12px 30px rgba(59, 130, 246, 0.7);
}