/* ============================================
   COLOR PALETTE & CSS VARIABLES
   ============================================ */
:root {
  --black: #000000;
  --prussian-blue: #14213d;
  --orange: #fca311;
  --alabaster-grey: #e5e5e5;
  --white: #ffffff;
  
  /* Semantic colors */
  --success-green: #10b981;
  --error-red: #ef4444;
  --warning-orange: #fca311;
  --info-blue: #3b82f6;
  
  /* Backgrounds */
  --bg-primary: #f7f9fc;
  --bg-card: #ffffff;
  --bg-hover: #f1f5f9;
  
  /* Text */
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  
  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  
  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  padding: 0;
  min-height: 100vh;
  padding-top: 70px; /* Space for fixed navbar */
}

/* ============================================
   NAVIGATION BAR
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  background-color: var(--prussian-blue);
  color: var(--white);
  padding: var(--spacing-md) var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: var(--shadow-md);
  z-index: 1000;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
}

.navbar-icon {
  font-size: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.navbar-icon img {
  display: block;
  object-fit: contain;
}

.navbar-title {
  color: var(--white);
}

.navbar-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  align-items: center;
  margin: 0;
  padding: 0;
}

.navbar-menu li {
  margin: 0;
}

.navbar-link {
  color: var(--white);
  text-decoration: none;
  font-weight: 500;
  font-size: 15px;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease, color 0.2s ease;
  cursor: pointer;
  display: inline-block;
}

.navbar-link:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--white);
}

.navbar-link:active {
  background-color: rgba(255, 255, 255, 0.2);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero-section {
  text-align: center;
  padding: var(--spacing-xl) 0;
  margin-bottom: var(--spacing-xl);
}

.hero-section h1 {
  margin-bottom: var(--spacing-md);
  font-size: 36px;
}

.hero-section p {
  font-size: 20px;
  color: var(--text-secondary);
  font-weight: 400;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1 {
  font-size: 28px;
  font-weight: 700;
  color: var(--prussian-blue);
  margin-bottom: var(--spacing-xl);
  text-align: center;
}

h2 {
  font-size: 20px;
  font-weight: 600;
  color: var(--prussian-blue);
  margin-bottom: var(--spacing-md);
}

h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

/* ============================================
   LAYOUT CONTAINER
   ============================================ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-md);
}

/* ============================================
   CARD COMPONENT
   ============================================ */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.card:hover {
  box-shadow: var(--shadow-lg);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--alabaster-grey);
}

.card-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--prussian-blue);
  margin: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
}

hr{
  border: 1px solid #e5e5e5;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  text-decoration: none;
}

.btn-primary {
  background-color: var(--prussian-blue);
  color: var(--white);
}

.btn-primary:hover {
  background-color: #1a2d4f;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background-color: var(--alabaster-grey);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background-color: #d4d4d4;
}

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

.btn-danger:hover {
  background-color: #dc2626;
}

.btn-icon {
  padding: 8px 12px;
  min-width: auto;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* ============================================
   FORM CONTROLS
   ============================================ */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.form-input,
.form-select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--alabaster-grey);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-family: inherit;
  background-color: var(--white);
  color: var(--text-primary);
  transition: border-color 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
}

.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: var(--prussian-blue);
  box-shadow: 0 0 0 3px rgba(20, 33, 61, 0.1);
  background-color: #fafbfc;
  transition: border-color 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
}

.form-input[type="time"] {
  padding: 8px 10px;
  transition: border-color 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
}

.form-input[type="time"]:focus {
  background-color: #fafbfc;
  transition: border-color 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
}

.form-helper {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: var(--spacing-xs);
}

/* ============================================
   DOSE TIMES TABLE
   ============================================ */
.dose-times-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--spacing-lg);
}

.dose-times-table th {
  background-color: var(--prussian-blue);
  color: var(--white);
  padding: 12px;
  text-align: left;
  font-weight: 600;
  font-size: 15px;
}

.dose-times-table th:first-child {
  border-radius: var(--radius-md) 0 0 0;
}

.dose-times-table th:last-child {
  border-radius: 0 var(--radius-md) 0 0;
}

.dose-times-table td {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--alabaster-grey);
  vertical-align: middle;
}

.dose-times-table tr:last-child td {
  border-bottom: none;
}

.dose-times-table tr:hover {
  background-color: var(--bg-hover);
}

.time-cell {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.time-input-wrapper {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.time-input-wrapper input[type="time"] {
  flex: 1;
  min-width: 120px;
}

.meal-label {
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

/* ============================================
   STATUS BADGES
   ============================================ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-success {
  background-color: #d1fae5;
  color: var(--success-green);
}

.badge-error {
  background-color: #fee2e2;
  color: var(--error-red);
}

.badge-info {
  background-color: #dbeafe;
  color: var(--info-blue);
}

/* ============================================
   DOSE HISTORY TABLE
   ============================================ */
.history-table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.history-table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--white);
}

.history-table thead {
  background-color: var(--prussian-blue);
  color: var(--white);
  position: sticky;
  top: 0;
  z-index: 10;
}

.history-table th {
  padding: 12px;
  text-align: left;
  font-weight: 600;
  font-size: 14px;
}

.history-table td {
  padding: 12px;
  border-bottom: 1px solid var(--alabaster-grey);
  font-size: 14px;
}

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

.history-table tbody tr:nth-child(even) {
  background-color: #fafbfc;
}

.history-table tbody tr:hover {
  background-color: var(--bg-hover);
  cursor: pointer;
}

.history-table tbody tr:last-child td {
  border-bottom: none;
}

/* ============================================
   FILTER PANEL
   ============================================ */
.filter-panel {
  background-color: var(--bg-card);
  border: 1px solid var(--alabaster-grey);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transform: translateY(-10px);
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), 
              opacity 0.3s ease-out, 
              transform 0.3s ease-out, 
              padding 0.4s cubic-bezier(0.4, 0, 0.2, 1), 
              margin 0.4s cubic-bezier(0.4, 0, 0.2, 1),
              border-width 0.3s ease-out;
  padding-top: 0;
  padding-bottom: 0;
  margin-bottom: 0;
  border-width: 0;
}

.filter-panel.active {
  max-height: 800px;
  opacity: 1;
  transform: translateY(0);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  border-width: 1px;
}

.filter-section {
  margin-bottom: var(--spacing-md);
}

.filter-section:last-child {
  margin-bottom: 0;
}

.filter-label {
  font-weight: 600;
  font-size: 14px;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  display: block;
}

.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  background-color: var(--alabaster-grey);
  border: 1px solid var(--alabaster-grey);
  border-radius: 20px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-chip input[type="checkbox"] {
  margin-right: var(--spacing-xs);
  cursor: pointer;
}

.filter-chip:hover {
  background-color: var(--bg-hover);
  border-color: var(--prussian-blue);
}

.filter-chip input[type="checkbox"]:checked + span {
  font-weight: 600;
  color: var(--prussian-blue);
}

.filter-actions {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.date-range-inputs {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.date-range-inputs input[type="date"] {
  flex: 1;
  max-width: 200px;
}

/* ============================================
   PAGINATION
   ============================================ */
.pagination-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--spacing-md);
  padding: var(--spacing-md);
  background-color: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.pagination-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.pagination-info {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
}

/* ============================================
   REPEAT CONTROLS
   ============================================ */
.repeat-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  margin-top: var(--spacing-md);
  padding: var(--spacing-md);
  background-color: var(--bg-hover);
  border-radius: var(--radius-md);
}

.repeat-controls label {
  font-weight: 600;
  color: var(--text-primary);
}

.custom-repeat-wrapper {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.custom-repeat-wrapper input[type="number"] {
  width: 70px;
}

/* ============================================
   EMPTY STATE
   ============================================ */
.empty-state {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--text-secondary);
}

.empty-state-icon {
  font-size: 48px;
  margin-bottom: var(--spacing-md);
}

.empty-state-text {
  font-size: 16px;
  font-weight: 500;
}

/* ============================================
   ICONS & EMOJI HELPERS
   ============================================ */
.icon {
  display: inline-block;
  width: 20px;
  height: 20px;
  text-align: center;
  line-height: 20px;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 768px) {
  body {
    padding-top: 60px; /* Adjust for smaller navbar */
  }

  .navbar {
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .navbar-brand {
    font-size: 16px;
  }

  .navbar-icon {
    font-size: 20px;
  }

  .navbar-menu {
    gap: var(--spacing-sm);
  }

  .navbar-link {
    font-size: 14px;
    padding: var(--spacing-xs);
  }

  .container {
    padding: var(--spacing-md);
  }

  h1 {
    font-size: 24px;
  }

  .card {
    padding: var(--spacing-md);
  }

  .dose-times-table,
  .history-table {
    font-size: 12px;
  }

  .dose-times-table th,
  .dose-times-table td,
  .history-table th,
  .history-table td {
    padding: 8px;
  }

  .time-cell {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-xs);
  }

  .pagination-container {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .filter-chips {
    flex-direction: column;
  }

  .repeat-controls {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .dose-times-table {
    display: block;
    overflow-x: auto;
  }

  .history-table-wrapper {
    overflow-x: scroll;
  }
}

/* ============================================
   MODAL
   ============================================ */
.modal {
  display: none;
  position: fixed;
  z-index: 2000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
}

.modal-content {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--spacing-lg);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
}

/* ============================================
   PATIENT & DEVICE CARDS
   ============================================ */
.patients-list,
.devices-list {
  min-height: 100px;
}

.patient-card {
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.patient-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.mt-sm {
  margin-top: var(--spacing-sm);
}

.mt-md {
  margin-top: var(--spacing-md);
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

.mb-sm {
  margin-bottom: var(--spacing-sm);
}

.mb-md {
  margin-bottom: var(--spacing-md);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}