/* ===== Modern CSS Reset & Variables ===== */
:root {
  /* Colors */
  --color-primary: #bc141c;
  --color-primary-dark: #a01117;
  --color-primary-light: #d73940;
  
  --color-background: #ffffff;
  --color-text: #111827;
  --color-text-muted: #6b7280;
  --color-text-light: #9ca3af;
  
  --color-card: #ffffff;
  --color-border: #e5e7eb;
  --color-border-focus: #d1d5db;
  
  --color-success: #16a34a;
  --color-warning: #d97706;
  --color-error: #dc2626;
  --color-info: #2563eb;
  
  --color-chip: #f9fafb;
  --color-hover: #f3f4f6;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  
  /* Typography */
  --font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', 'Noto Color Emoji';
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  
  /* Layout */
  --border-radius: 0.875rem;
  --border-radius-sm: 0.5rem;
  --border-radius-lg: 1rem;
  --border-radius-full: 9999px;
  
  --container-max: min(1400px, 96vw);
  --container-padding: clamp(1rem, 2vw, 2rem);
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-base: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  
  /* Focus */
  --focus-ring: 0 0 0 3px rgba(188, 20, 28, 0.3);
  --focus-ring-offset: 2px;
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 200ms ease-in-out;
  --transition-slow: 300ms ease-in-out;
}

/* ===== Modern CSS Reset ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}

html {
  line-height: var(--line-height-normal);
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ===== Modern Navigation Bar ===== */
.navbar {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: white;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  backdrop-filter: blur(10px);
}

.navbar-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 clamp(1rem, 3vw, 2rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4.5rem;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: white;
  transition: transform var(--transition-fast);
}

.navbar-brand:hover {
  transform: translateY(-1px);
  color: white;
  text-decoration: none;
}

.navbar-brand:visited {
  color: white;
}

.brand-logo {
  height: 2.25rem;
  width: auto;
  filter: brightness(1.1);
}

.brand-text {
  font-size: var(--font-size-xl);
  font-weight: 800;
  letter-spacing: 0.025em;
  line-height: 1;
}

.brand-subtitle {
  font-size: var(--font-size-sm);
  font-weight: 500;
  opacity: 0.9;
  margin-left: var(--space-xs);
}

.navbar-menu {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.customer-info {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
}

.customer-name {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: white;
}

.customer-number {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.8);
  font-weight: 500;
}

/* ===== Main Content Layout ===== */
.main-content {
  min-height: calc(100vh - 4.5rem);
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  padding: var(--space-2xl) 0;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 clamp(1rem, 3vw, 2rem);
}

/* ===== Search Section ===== */
.search-section {
  background: var(--color-card);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2xl);
  margin-bottom: var(--space-2xl);
  border: 1px solid var(--color-border);
}

.search-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.page-title {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
  line-height: var(--line-height-tight);
}

.page-description {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
  max-width: 600px;
  margin: 0 auto;
}

.page-description code {
  background: var(--color-chip);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: 'SF Mono', Consolas, monospace;
  font-size: 0.9em;
  color: var(--color-primary);
  font-weight: 600;
}

/* ===== Search Form ===== */
.search-form-container {
  max-width: 700px;
  margin: 0 auto;
}

.search-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.search-input-group {
  display: flex;
  gap: var(--space-md);
  align-items: stretch;
}

.search-input-wrapper {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: var(--space-md);
  width: 1.25rem;
  height: 1.25rem;
  color: var(--color-text-muted);
  pointer-events: none;
  z-index: 2;
}

.search-input {
  width: 100%;
  height: 3.5rem;
  padding: 0 3rem 0 3rem;
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-base);
  background: var(--color-background);
  transition: all var(--transition-fast);
  font-family: inherit;
}

.search-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(188, 20, 28, 0.1);
  outline: none;
}

.search-input::placeholder {
  color: var(--color-text-light);
}

.clear-btn {
  position: absolute;
  right: var(--space-md);
  background: none;
  border: none;
  padding: var(--space-xs);
  border-radius: 50%;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: none;
  z-index: 2;
}

.clear-btn:hover {
  background: var(--color-hover);
  color: var(--color-text);
}

.clear-btn .icon {
  width: 1rem;
  height: 1rem;
}

.btn-search {
  height: 3.5rem;
  min-width: 120px;
  padding: 0 var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 600;
  white-space: nowrap;
}

.search-actions {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
}

.search-status {
  text-align: center;
  margin-top: var(--space-lg);
}

.status-message {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin: 0;
}

.status-message.status-search {
  color: var(--color-info);
}

.status-message code {
  background: var(--color-chip);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: 'SF Mono', Consolas, monospace;
  font-weight: 600;
  color: var(--color-primary);
}

/* ===== Debug Info ===== */
.debug-info {
  background: linear-gradient(135deg, #fef7cd, #fef3c7);
  border: 1px solid #f59e0b;
  border-radius: var(--border-radius-sm);
  padding: var(--space-lg);
  margin-bottom: var(--space-xl);
  font-size: var(--font-size-sm);
}

.debug-header {
  font-weight: 700;
  color: #92400e;
  margin-bottom: var(--space-sm);
}

.debug-content p {
  margin: var(--space-xs) 0;
  color: #92400e;
}

.debug-error {
  color: #dc2626 !important;
  font-weight: 600;
}

/* ===== Results Section ===== */
.results-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.card-header {
  background: linear-gradient(135deg, #f8fafc, #f1f5f9);
  padding: var(--space-xl) var(--space-xl) var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.card-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
  margin: 0;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.card-content {
  padding: var(--space-xl);
}

/* ===== Empty States ===== */
.empty-state, .error-state {
  text-align: center;
  padding: var(--space-2xl);
  background: var(--color-card);
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
}

.empty-icon, .error-icon {
  width: 4rem;
  height: 4rem;
  color: var(--color-text-light);
  margin: 0 auto var(--space-lg);
}

.error-icon {
  color: var(--color-error);
}

.empty-title, .error-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.empty-description, .error-description {
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
}

.empty-description code {
  background: var(--color-chip);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: 'SF Mono', Consolas, monospace;
  color: var(--color-primary);
  font-weight: 600;
}

/* ===== Toast Notification ===== */
.toast {
  position: fixed;
  top: 2rem;
  right: 2rem;
  background: var(--color-text);
  color: white;
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--border-radius-sm);
  box-shadow: var(--shadow-lg);
  z-index: 2000;
  transform: translateX(120%);
  transition: transform var(--transition-base);
}

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

.toast-content {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.toast-icon {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--color-success);
}

.toast-message {
  font-size: var(--font-size-sm);
  font-weight: 500;
}

/* ===== Improved Focus Management ===== */
:focus {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: var(--focus-ring-offset);
  box-shadow: var(--focus-ring);
}

/* ===== Modern Topbar ===== */
.topbar {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: white;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-base);
}

.topbar .inner {
  width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-md) var(--container-padding);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  min-height: 4rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: white;
  font-weight: 800;
  font-size: var(--font-size-lg);
  letter-spacing: 0.025em;
  transition: opacity var(--transition-fast);
}

.brand:hover {
  opacity: 0.9;
}

.brand .logo {
  height: 2rem;
  width: auto;
  display: block;
}

.userbar {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.userhint {
  color: rgba(255, 255, 255, 0.9);
  font-size: var(--font-size-sm);
}

/* ===== Layout Improvements ===== */
.wrap {
  width: var(--container-max);
  margin: var(--space-2xl) auto var(--space-2xl);
  padding: 0 var(--container-padding);
}

.card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--space-xl);
  box-shadow: var(--shadow-lg);
  position: relative;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  line-height: var(--line-height-tight);
  font-weight: 700;
  color: var(--color-text);
}

h1 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-sm);
}

h2 {
  font-size: var(--font-size-xl);
  margin: var(--space-lg) 0 var(--space-sm);
}

.hint {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-md);
  line-height: var(--line-height-relaxed);
}

.error {
  color: var(--color-error);
}

.msg-warning {
  color: var(--color-warning);
}

.msg-info {
  color: var(--color-info);
}

/* ===== Modern Form Styling ===== */
form {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: var(--space-sm);
  align-items: center;
  margin: var(--space-lg) 0 var(--space-md);
}

@media (max-width: 768px) {
  form {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
}

.input-wrap {
  position: relative;
  min-width: 0;
}

input[type="search"],
input[type="text"],
input[type="password"],
input[type="email"],
select {
  width: 100%;
  height: 2.75rem;
  padding: 0 2.75rem 0 var(--space-md);
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
  background: white;
  color: var(--color-text);
  font-size: var(--font-size-base);
  transition: all var(--transition-fast);
}

input:hover {
  border-color: var(--color-border-focus);
}

input:focus {
  border-color: var(--color-primary);
  box-shadow: var(--focus-ring);
}

input::placeholder {
  color: var(--color-text-light);
}

.clear-btn {
  position: absolute;
  right: var(--space-sm);
  top: 50%;
  transform: translateY(-50%);
  border: none;
  background: transparent;
  padding: var(--space-xs);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: background-color var(--transition-fast);
  display: none;
}

.clear-btn:hover {
  background: var(--color-hover);
}

.clear-btn .icon {
  width: 1rem;
  height: 1rem;
  stroke-width: 2;
}

/* ===== Button Improvements ===== */
.btn {
  height: 2.75rem;
  padding: 0 var(--space-lg);
  border: none;
  border-radius: var(--border-radius);
  font-weight: 600;
  font-size: var(--font-size-sm);
  cursor: pointer;
  display: inline-flex;
  gap: var(--space-xs);
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}

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

.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-base);
}

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

.btn-ghost {
  background: white;
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.btn-ghost:hover:not(:disabled) {
  background: var(--color-hover);
  border-color: var(--color-border-focus);
}

.btn-logout {
  background: rgba(255, 255, 255, 0.1);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-logout:hover {
  background: rgba(255, 255, 255, 0.2);
}

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

.btn .icon {
  width: 1rem;
  height: 1rem;
  stroke-width: 2;
}

.btn-sm {
  height: 2.25rem;
  padding: 0 var(--space-md);
  font-size: var(--font-size-xs);
}

.btn-outline {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: white;
}

.btn-outline:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.5);
}

.icon {
  width: 1.25rem;
  height: 1.25rem;
  stroke-width: 2;
}

.icon-sm {
  width: 1rem;
  height: 1rem;
}

.icon-lg {
  width: 1.5rem;
  height: 1.5rem;
}

/* ===== Enhanced Grid System ===== */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-md);
}

/* ===== Shipment Components ===== */
.shipments-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}

.shipment-item {
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  padding: var(--space-lg);
  transition: all var(--transition-fast);
}

.shipment-item:hover {
  box-shadow: var(--shadow-base);
  border-color: var(--color-border-focus);
}

.shipment-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-lg);
  gap: var(--space-sm);
}

.tracking-number .tracking-link {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
  font-size: var(--font-size-lg);
}

.tracking-number .tracking-link:hover {
  text-decoration: underline;
}

.tracking-number code {
  background: transparent;
  padding: 0;
  font-size: inherit;
  color: inherit;
  font-weight: inherit;
}

.status-badge {
  flex-shrink: 0;
}

.status-chip {
  display: inline-block;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--border-radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.status-delivered {
  background: #dcfce7;
  color: #166534;
  border: 1px solid #bbf7d0;
}

.status-transit {
  background: #fef3c7;
  color: #92400e;
  border: 1px solid #fde68a;
}

.shipment-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.detail-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-xs) 0;
}

.detail-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  font-weight: 500;
  min-width: 80px;
}

.detail-value {
  font-size: var(--font-size-sm);
  color: var(--color-text);
  font-weight: 500;
  text-align: right;
}

.results-count {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  background: var(--color-chip);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--border-radius-full);
  margin-left: var(--space-sm);
}

/* ===== Pagination ===== */
.pagination {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.page-info {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  font-weight: 500;
}

@media (max-width: 480px) {
  .pagination {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }
  
  .shipments-grid {
    grid-template-columns: 1fr;
  }
  
  .shipment-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
  }
  
  .detail-row {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-xs);
  }
  
  .detail-value {
    text-align: left;
  }
}

.kv {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--space-md);
  min-width: 0;
  transition: border-color var(--transition-fast);
}

.kv:hover {
  border-color: var(--color-border-focus);
}

.kv b {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-xs);
  font-weight: 600;
}

.kv span {
  display: block;
  font-weight: 500;
  word-break: break-word;
}

/* ===== Improved Status Chips ===== */
.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--border-radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-chip);
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.chip.ok {
  background: rgb(22 163 74 / 0.1);
  border-color: rgb(22 163 74 / 0.2);
  color: var(--color-success);
}

.chip.warn {
  background: rgb(217 119 6 / 0.1);
  border-color: rgb(217 119 6 / 0.2);
  color: var(--color-warning);
}

/* ===== Table Improvements ===== */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
  margin: var(--space-md) 0;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.table th {
  background: var(--color-hover);
  font-weight: 600;
  text-align: left;
  padding: var(--space-md);
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

.table td {
  padding: var(--space-md);
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

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

.table tr:hover {
  background: rgb(249 250 251);
}

.table a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.table a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

/* ===== Event Timeline ===== */
.events {
  margin-top: var(--space-lg);
}

.event {
  padding: var(--space-md) 0;
  border-bottom: 2px dashed var(--color-border);
  position: relative;
}

.event:last-child {
  border-bottom: none;
}

.event .when {
  font-weight: 600;
  color: var(--color-primary);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-xs);
}

.event .where {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  margin-top: var(--space-xs);
}

/* ===== Toast Notifications ===== */
.toast {
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-xl);
  background: var(--color-text);
  color: white;
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  transform: translateY(100px);
  opacity: 0;
  transition: all var(--transition-base);
  z-index: 1000;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.toast .icon {
  width: 1rem;
  height: 1rem;
  stroke-width: 2;
}

/* ===== Flash Messages ===== */
.flash-message {
  padding: var(--space-md);
  border-radius: var(--border-radius);
  margin-bottom: var(--space-lg);
  font-weight: 500;
}

.flash-success {
  background: rgb(22 163 74 / 0.1);
  border: 1px solid rgb(22 163 74 / 0.2);
  color: var(--color-success);
}

.flash-error {
  background: rgb(220 38 38 / 0.1);
  border: 1px solid rgb(220 38 38 / 0.2);
  color: var(--color-error);
}

.flash-warning {
  background: rgb(217 119 6 / 0.1);
  border: 1px solid rgb(217 119 6 / 0.2);
  color: var(--color-warning);
}

.flash-info {
  background: rgb(37 99 235 / 0.1);
  border: 1px solid rgb(37 99 235 / 0.2);
  color: var(--color-info);
}

/* ===== Responsive Improvements ===== */
@media (max-width: 640px) {
  .wrap {
    margin: var(--space-lg) auto;
  }
  
  .card {
    padding: var(--space-lg);
  }
  
/* ===== Responsive Design ===== */
@media (max-width: 768px) {
  .navbar-container {
    flex-direction: column;
    gap: var(--space-md);
    padding: var(--space-lg) var(--space-md);
    align-items: stretch;
  }

  .navbar-menu {
    justify-content: space-between;
    width: 100%;
  }

  .customer-info {
    align-items: flex-start;
  }

  .main-content {
    padding: var(--space-lg) 0;
  }

  .search-section {
    margin: 0 var(--space-sm) var(--space-lg);
    padding: var(--space-lg);
    border-radius: var(--border-radius-sm);
  }

  .search-header {
    margin-bottom: var(--space-lg);
  }

  .page-title {
    font-size: var(--font-size-2xl);
  }

  .search-input-group {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .btn-search {
    width: 100%;
    justify-content: center;
  }

  .search-actions {
    margin-top: var(--space-sm);
  }

  .card {
    margin: 0 var(--space-sm);
    padding: var(--space-lg);
  }

  .card-header {
    padding: var(--space-lg);
  }

  .card-content {
    padding: var(--space-lg);
  }
  
  .grid {
    grid-template-columns: 1fr;
  }
  
  .toast {
    bottom: var(--space-lg);
    right: var(--space-lg);
    left: var(--space-lg);
    transform: translateY(100%);
  }

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

/* ===== Dark Mode Support (Future Enhancement) ===== */
@media (prefers-color-scheme: dark) {
  :root {
    --color-background: #111827;
    --color-text: #f9fafb;
    --color-text-muted: #9ca3af;
    --color-card: #1f2937;
    --color-border: #374151;
    --color-hover: #374151;
  }
}

/* ===== Print Styles ===== */
@media print {
  .topbar,
  .btn,
  .toast {
    display: none !important;
  }
  
  .card {
    box-shadow: none;
    border: 1px solid #ccc;
  }
}