/* TasosolMed Stock Management System - Main Stylesheet */
/* Font: Inter */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ==========================================================================
   CSS Variables
   ========================================================================== */
:root {
  /* Colors - Light Theme */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-card: #ffffff;
  --bg-sidebar: #244573;
  --bg-topbar: #244573;
  --text-primary: #1a2332;
  --text-secondary: #64748b;
  --text-sidebar: #ffffff;
  --border: #e2e8f0;
  
  /* Brand Accents */
  --accent-1: #244573;
  --accent-2: #3678b3;
  --accent-3: #6fb4e3;
  --accent-4: #ededed;
  
  /* Semantic Colors */
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3678b3;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  
  /* Radii */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 500ms ease;
  
  /* Font */
  --font-family: 'Inter', sans-serif;
}

[data-theme="dark"] {
  --bg-primary: #0f1823;
  --bg-secondary: #1a2535;
  --bg-card: #1e2d40;
  --bg-sidebar: #0d1520;
  --bg-topbar: #0d1520;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --border: #2d3f55;
  --text-sidebar: #e2e8f0;
}

[data-theme="brand"] {
  --bg-primary: #244573;
  --bg-secondary: #1e3a63;
  --bg-card: rgba(255, 255, 255, 0.08);
  --bg-sidebar: #1a2f4f;
  --bg-topbar: #1a2f4f;
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --border: rgba(255, 255, 255, 0.1);
  --text-sidebar: #ffffff;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  line-height: 1.5;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

a {
  text-decoration: none;
  color: inherit;
}

/* ==========================================================================
   Layout
   ========================================================================== */
.app-wrapper {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

.sidebar {
  width: 260px;
  background-color: var(--bg-sidebar);
  color: var(--text-sidebar);
  display: flex;
  flex-direction: column;
  transition: width var(--transition-normal);
  position: relative;
  z-index: 20;
  /* DNA background blend */
  background-image: linear-gradient(rgba(36, 69, 115, 0.85), rgba(36, 69, 115, 0.85)), url('/assets/images/dna-pattern.svg');
  background-size: cover;
  background-position: center;
}

.sidebar.collapsed {
  width: 64px;
}

.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0; /* Prevents overflow in flex child */
}

.topbar {
  height: 64px;
  background: linear-gradient(90deg, var(--accent-1), var(--accent-2));
  color: white;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  z-index: 10;
  position: relative;
  box-shadow: var(--shadow-sm);
}

.topbar::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image: url('/assets/images/dna-pattern.svg');
  opacity: 0.1;
  pointer-events: none;
}

.page-content {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem;
  background-color: var(--bg-secondary);
}

/* ==========================================================================
   Sidebar Elements
   ========================================================================== */
.sidebar-logo {
  height: 64px;
  display: flex;
  align-items: center;
  padding: 0 1rem;
  background-color: rgba(0, 0, 0, 0.1);
  overflow: hidden;
  white-space: nowrap;
}

.sidebar-logo img {
  max-height: 32px;
  margin-right: 1rem;
}

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 1rem 0;
  list-style: none;
}

.sidebar-nav-group {
  padding: 0.5rem 1.5rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-top: 1rem;
  transition: opacity var(--transition-fast);
}

.sidebar.collapsed .sidebar-nav-group {
  opacity: 0;
  height: 0;
  overflow: hidden;
  padding: 0;
  margin: 0;
}

.sidebar-nav-item {
  display: flex;
  align-items: center;
  padding: 0.75rem 1.5rem;
  color: rgba(255, 255, 255, 0.8);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  overflow: hidden;
}

.sidebar-nav-item i {
  font-size: 1.25rem;
  min-width: 1.5rem;
  margin-right: 1rem;
  text-align: center;
}

.sidebar-nav-item:hover {
  background-color: rgba(255, 255, 255, 0.05);
  color: white;
}

.sidebar-nav-item.active {
  background-color: var(--accent-2);
  color: white;
  border-left: 3px solid var(--accent-3);
}

.sidebar-collapse-btn {
  padding: 1rem;
  background-color: rgba(0, 0, 0, 0.2);
  border: none;
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition-fast);
}

.sidebar-collapse-btn:hover {
  background-color: rgba(0, 0, 0, 0.3);
}

.sidebar.collapsed .sidebar-nav-item span {
  display: none;
}

.sidebar.collapsed .sidebar-nav-item i {
  margin-right: 0;
}

.sidebar-submenu {
  list-style: none;
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
  background-color: rgba(0, 0, 0, 0.1);
}

.sidebar-submenu.open {
  max-height: 200px;
}

.sidebar-submenu .sidebar-nav-item {
  padding-left: 3rem;
}

.sidebar.collapsed .sidebar-submenu {
  display: none;
}

/* ==========================================================================
   Top Bar Elements
   ========================================================================== */
.topbar-title {
  font-size: 1.25rem;
  font-weight: 600;
  z-index: 1;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  z-index: 1;
}

.theme-toggle {
  background: transparent;
  border: none;
  color: white;
  cursor: pointer;
  font-size: 1.25rem;
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.theme-toggle:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

/* ==========================================================================
   Cards
   ========================================================================== */
.card {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  border: 1px solid var(--border);
  backdrop-filter: blur(10px);
}

.card-header {
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.75rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-body {
  position: relative;
}

.card-footer {
  margin-top: 1rem;
  border-top: 1px solid var(--border);
  padding-top: 0.75rem;
}

.stat-card {
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
}

.stat-card.success::before { background-color: var(--success); }
.stat-card.warning::before { background-color: var(--warning); }
.stat-card.danger::before { background-color: var(--danger); }
.stat-card.info::before { background-color: var(--info); }

.stat-card .stat-value {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.stat-card .stat-label {
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
}

.stat-card .stat-icon {
  position: absolute;
  right: 1.5rem;
  top: 1.5rem;
  font-size: 2.5rem;
  opacity: 0.1;
}

/* ==========================================================================
   Tables
   ========================================================================== */
.table-responsive {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th, .data-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.data-table th {
  background-color: var(--bg-sidebar);
  color: white;
  font-weight: 600;
  position: sticky;
  top: 0;
  z-index: 10;
}

.data-table tbody tr {
  transition: background-color var(--transition-fast);
}

.data-table tbody tr:hover {
  background-color: rgba(0, 0, 0, 0.02);
}

[data-theme="dark"] .data-table tbody tr:hover,
[data-theme="brand"] .data-table tbody tr:hover {
  background-color: rgba(255, 255, 255, 0.05);
}

.badge {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.badge.success { background-color: rgba(16, 185, 129, 0.1); color: var(--success); }
.badge.warning { background-color: rgba(245, 158, 11, 0.1); color: var(--warning); }
.badge.danger { background-color: rgba(239, 68, 68, 0.1); color: var(--danger); }
.badge.info { background-color: rgba(54, 120, 179, 0.1); color: var(--info); }
.badge.grey { background-color: rgba(100, 116, 139, 0.1); color: var(--text-secondary); }

.expiry-ok { border-left: 3px solid var(--success); }
.expiry-warning { border-left: 3px solid var(--warning); }
.expiry-critical { border-left: 3px solid var(--danger); }
.expiry-expired { border-left: 3px solid var(--text-secondary); opacity: 0.6; }

/* ==========================================================================
   Forms
   ========================================================================== */
.form-group {
  margin-bottom: 1rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-primary);
}

.form-control, .form-select {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: inherit;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus, .form-select:focus {
  outline: none;
  border-color: var(--accent-2);
  box-shadow: 0 0 0 3px rgba(54, 120, 179, 0.2);
}

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

.input-group {
  display: flex;
}

.input-group .form-control {
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.input-group-text {
  padding: 0.5rem 0.75rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border);
  border-right: none;
  border-radius: var(--radius-md) 0 0 var(--radius-md);
  color: var(--text-secondary);
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: inherit;
  gap: 0.5rem;
}

.btn-sm { padding: 0.25rem 0.5rem; font-size: 0.875rem; }
.btn-lg { padding: 0.75rem 1.5rem; font-size: 1.125rem; }

.btn-primary { background-color: var(--accent-1); color: white; }
.btn-primary:hover { background-color: var(--accent-2); transform: translateY(-1px); box-shadow: var(--shadow-sm); }

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

.btn-success { background-color: var(--success); color: white; }
.btn-danger { background-color: var(--danger); color: white; }
.btn-warning { background-color: var(--warning); color: white; }

.btn-outline { background-color: transparent; border-color: var(--accent-2); color: var(--accent-2); }
.btn-outline:hover { background-color: var(--accent-2); color: white; }

.btn-ghost { background-color: transparent; color: var(--text-primary); }
.btn-ghost:hover { background-color: rgba(0, 0, 0, 0.05); }
[data-theme="dark"] .btn-ghost:hover, [data-theme="brand"] .btn-ghost:hover { background-color: rgba(255, 255, 255, 0.1); }

.btn-icon { padding: 0.5rem; border-radius: 50%; }

.btn-loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}
.btn-loading::after {
  content: '';
  position: absolute;
  width: 1rem;
  height: 1rem;
  border: 2px solid white;
  border-radius: 50%;
  border-top-color: transparent;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ==========================================================================
   Modals
   ========================================================================== */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  backdrop-filter: blur(4px);
}

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

.modal {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 500px;
  box-shadow: var(--shadow-lg);
  transform: translateY(20px);
  transition: transform var(--transition-normal);
}

.modal-overlay.active .modal {
  transform: translateY(0);
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
}

/* ==========================================================================
   Alerts & Toasts
   ========================================================================== */
.alert {
  padding: 1rem;
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.alert.success { background-color: rgba(16, 185, 129, 0.1); border-left: 4px solid var(--success); color: var(--text-primary); }
.alert.warning { background-color: rgba(245, 158, 11, 0.1); border-left: 4px solid var(--warning); color: var(--text-primary); }
.alert.danger { background-color: rgba(239, 68, 68, 0.1); border-left: 4px solid var(--danger); color: var(--text-primary); }
.alert.info { background-color: rgba(54, 120, 179, 0.1); border-left: 4px solid var(--info); color: var(--text-primary); }

.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 1100;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.toast {
  min-width: 250px;
  background-color: var(--bg-card);
  border-left: 4px solid var(--info);
  box-shadow: var(--shadow-lg);
  padding: 1rem;
  border-radius: var(--radius-md);
  transform: translateX(120%);
  transition: transform var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.toast.show {
  transform: translateX(0);
}

.toast.success { border-color: var(--success); }
.toast.warning { border-color: var(--warning); }
.toast.danger { border-color: var(--danger); }

/* ==========================================================================
   Settings-specific
   ========================================================================== */
.settings-section {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  background-color: var(--bg-primary);
  overflow: hidden;
}

.settings-section-header {
  padding: 1rem 1.5rem;
  background-color: rgba(0, 0, 0, 0.02);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  user-select: none;
}

.settings-section-header i.fa-chevron-down {
  transition: transform var(--transition-fast);
}

.settings-section.open .settings-section-header i.fa-chevron-down {
  transform: rotate(180deg);
}

.settings-section-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
  padding: 0 1.5rem;
}

.settings-section.open .settings-section-body {
  max-height: 1000px;
  padding: 1.5rem;
  border-top: 1px solid var(--border);
}

.settings-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .settings-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* ==========================================================================
   Scanning UI (Mobile Focus)
   ========================================================================== */
.scanner-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: black;
  z-index: 2000;
  display: none; /* Flex when active */
  flex-direction: column;
}

.scanner-video-container {
  flex: 1;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.scanner-video-container video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.scanner-viewfinder {
  position: absolute;
  width: 80%;
  max-width: 300px;
  height: 200px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.5);
}

.scanner-viewfinder::before, .scanner-viewfinder::after {
  content: '';
  position: absolute;
  width: 20px; height: 20px;
  border-color: var(--success);
  border-style: solid;
}

.scanner-viewfinder::before {
  top: -2px; left: -2px;
  border-width: 4px 0 0 4px;
}

.scanner-viewfinder::after {
  bottom: -2px; right: -2px;
  border-width: 0 4px 4px 0;
}

.scanner-feedback {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  color: white;
  text-align: center;
  z-index: 10;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.scanner-feedback.active {
  opacity: 1;
  pointer-events: auto;
}

.scanner-feedback.success { background-color: rgba(16, 185, 129, 0.9); }
.scanner-feedback.warning { background-color: rgba(245, 158, 11, 0.9); }
.scanner-feedback.danger { background-color: rgba(239, 68, 68, 0.9); }
.scanner-feedback.info { background-color: rgba(54, 120, 179, 0.9); }

.scanner-result-card {
  background-color: white;
  color: var(--text-primary);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  width: 100%;
  max-width: 400px;
  margin-top: 1rem;
  box-shadow: var(--shadow-lg);
}

.scan-flash {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: white;
  opacity: 0;
  pointer-events: none;
  z-index: 5;
}

@keyframes flashAnim {
  0% { opacity: 0; }
  50% { opacity: 0.8; }
  100% { opacity: 0; }
}
.scan-flash.active {
  animation: flashAnim 0.3s ease-out;
}

.scanner-toolbar {
  height: 80px;
  background-color: #111;
  display: flex;
  align-items: center;
  justify-content: space-around;
  padding: 0 1rem;
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */
.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-sm { gap: 0.5rem; }
.gap-md { gap: 1rem; }
.gap-lg { gap: 1.5rem; }

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
}

.mt-sm { margin-top: 0.5rem; } .mt-md { margin-top: 1rem; } .mt-lg { margin-top: 1.5rem; }
.mb-sm { margin-bottom: 0.5rem; } .mb-md { margin-bottom: 1rem; } .mb-lg { margin-bottom: 1.5rem; }
.p-sm { padding: 0.5rem; } .p-md { padding: 1rem; } .p-lg { padding: 1.5rem; }

.text-sm { font-size: 0.875rem; }
.text-md { font-size: 1rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }

.font-medium { font-weight: 500; }
.font-bold { font-weight: 700; }

.text-muted { color: var(--text-secondary); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }

.truncate {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

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

/* Responsive adjustments */
@media (max-width: 768px) {
  .sidebar:not(.collapsed) {
    position: fixed;
    height: 100vh;
    box-shadow: var(--shadow-lg);
  }
}