/**
 * Maintenance Manager Pro - Design System
 * Industrial Dark Mode - Fat Finger Friendly UI
 */

/* ========================================
   DESIGN TOKENS (CSS Variables)
   ======================================== */

:root {
  /* Colors - Industrial Dark Palette */
  --color-bg-primary: #0f0f1e;
  --color-bg-secondary: #1a1a2e;
  --color-bg-tertiary: #16213e;
  --color-bg-card: #1e1e3f;

  --color-accent: #0f4c75;
  --color-accent-bright: #3282b8;
  --color-accent-hover: #4a9fd8;

  --color-success: #00d9a3;
  --color-success-dark: #00a87a;
  --color-warning: #ffa726;
  --color-warning-dark: #f57c00;
  --color-danger: #ef5350;
  --color-danger-dark: #c62828;
  --color-info: #29b6f6;

  --color-text-primary: #e4e4e4;
  --color-text-secondary: #a0a0a0;
  --color-text-tertiary: #707070;
  --color-text-inverse: #1a1a2e;

  --color-border: #2a2a4e;
  --color-border-light: #3a3a5e;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 24px;
  --font-size-2xl: 32px;
  --font-size-3xl: 48px;

  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* Spacing (Fat Finger Friendly) */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-2xl: 64px;

  /* Interactive Elements */
  --button-height: 48px;
  --button-height-sm: 40px;
  --button-height-lg: 56px;
  --input-height: 48px;
  --input-height-sm: 40px;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.6);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;

  /* Z-index layers */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-toast: 1060;
}

/* ========================================
   RESET & BASE STYLES
   ======================================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  overflow-x: hidden;
}

/* ========================================
   TYPOGRAPHY
   ======================================== */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

h1 {
  font-size: var(--font-size-3xl);
}

h2 {
  font-size: var(--font-size-2xl);
}

h3 {
  font-size: var(--font-size-xl);
}

h4 {
  font-size: var(--font-size-lg);
}

h5 {
  font-size: var(--font-size-base);
}

h6 {
  font-size: var(--font-size-sm);
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-secondary);
}

a {
  color: var(--color-accent-bright);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-hover);
}

/* ========================================
   BUTTONS
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  height: var(--button-height);
  padding: 0 var(--spacing-md);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-bright) 100%);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--color-accent-bright) 0%, var(--color-accent-hover) 100%);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.btn-success {
  background: var(--color-success);
  color: var(--color-text-inverse);
}

.btn-success:hover:not(:disabled) {
  background: var(--color-success-dark);
}

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

.btn-danger:hover:not(:disabled) {
  background: var(--color-danger-dark);
}

.btn-secondary {
  background: var(--color-bg-tertiary);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--color-bg-card);
  border-color: var(--color-border-light);
}

.btn-sm {
  height: var(--button-height-sm);
  padding: 0 var(--spacing-sm);
  font-size: var(--font-size-sm);
}

.btn-lg {
  height: var(--button-height-lg);
  padding: 0 var(--spacing-lg);
  font-size: var(--font-size-lg);
}

.btn-icon {
  width: var(--button-height);
  padding: 0;
}

/* ========================================
   INPUTS & FORMS
   ======================================== */

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

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

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  height: var(--input-height);
  padding: 0 var(--spacing-sm);
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  color: var(--color-text-primary);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent-bright);
  box-shadow: 0 0 0 3px rgba(50, 130, 184, 0.2);
}

.form-textarea {
  height: auto;
  min-height: 120px;
  padding: var(--spacing-sm);
  resize: vertical;
}

.form-input::placeholder {
  color: var(--color-text-tertiary);
}

.form-input:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ========================================
   CARDS
   ======================================== */

.card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

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

.card-header {
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--color-border);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin: 0;
}

.card-body {
  color: var(--color-text-secondary);
}

/* ========================================
   BADGES & PILLS
   ======================================== */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.badge-success {
  background: var(--color-success);
  color: var(--color-text-inverse);
}

.badge-warning {
  background: var(--color-warning);
  color: var(--color-text-inverse);
}

.badge-danger {
  background: var(--color-danger);
  color: white;
}

.badge-info {
  background: var(--color-info);
  color: white;
}

.badge-secondary {
  background: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

/* ========================================
   MODALS
   ======================================== */

.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: var(--z-modal-backdrop);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
  animation: fadeIn var(--transition-base);
}

.modal {
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  z-index: var(--z-modal);
  animation: slideUp var(--transition-base);
}

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

.modal-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin: 0;
}

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

.modal-footer {
  padding: var(--spacing-md);
  border-top: 1px solid var(--color-border);
  display: flex;
  gap: var(--spacing-sm);
  justify-content: flex-end;
}

/* ========================================
   TOAST NOTIFICATIONS
   ======================================== */

.toast-container {
  position: fixed;
  top: var(--spacing-md);
  right: var(--spacing-md);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  max-width: 400px;
}

.toast {
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm) var(--spacing-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  animation: slideInRight var(--transition-base);
  border-left: 4px solid var(--color-info);
}

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

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

.toast-error {
  border-left-color: var(--color-danger);
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

.hidden {
  display: none !important;
}

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-between {
  justify-content: space-between;
}

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

.gap-md {
  gap: var(--spacing-md);
}

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

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

.font-bold {
  font-weight: var(--font-weight-bold);
}

.text-sm {
  font-size: var(--font-size-sm);
}

.text-lg {
  font-size: var(--font-size-lg);
}

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

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

.w-full {
  width: 100%;
}

/* ========================================
   ANIMATIONS
   ======================================== */

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

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

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(100%);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

.spinner {
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent-bright);
  border-radius: 50%;
  width: 24px;
  height: 24px;
  animation: spin 0.8s linear infinite;
}

/* ========================================
   PRINT STYLES
   ======================================== */

@media print {
  @page {
    size: auto;
    margin: 0;
  }

  body {
    background: white !important;
    color: black !important;
  }

  /* Hide everything by default */
  #app,
  #root,
  .app-layout,
  .app-header,
  .loading-overlay,
  .toast-container,
  .modal-backdrop,
  footer {
    display: none !important;
  }

  /* Show only printable area */
  #printable-area {
    visibility: visible !important;
    display: block !important;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    margin: 0;
    padding: 20px;
    background: white;
  }

  /* Label Styling for Print */
  .print-label {
    border: 2px solid black;
    padding: 20px;
    margin-bottom: 20px;
    text-align: center;
    page-break-inside: avoid;
    max-width: 300px;
    margin-left: auto;
    margin-right: auto;
  }

  .print-label h3 {
    color: black !important;
    font-size: 16pt;
    margin-bottom: 10px;
  }

  .print-label p {
    color: black !important;
    font-size: 12pt;
    margin-top: 5px;
  }

  .print-label-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
  }
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 640px) {
  :root {
    /* Compact Typography for Mobile */
    --font-size-3xl: 24px;
    --font-size-2xl: 20px;
    --font-size-xl: 18px;
    --font-size-lg: 16px;
    --font-size-base: 14px;
    /* Reduced base font size */

    /* Compact Spacing for Mobile */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    /* Significantly reduced */
    --spacing-lg: 20px;
    --spacing-xl: 32px;

    /* Compact Components */
    --button-height: 40px;
    --input-height: 40px;
    --radius-lg: 8px;
  }

  .modal {
    max-width: 100%;
    margin: var(--spacing-sm);
    border-radius: var(--radius-md);
    max-height: 95vh;
  }

  .toast-container {
    left: var(--spacing-sm);
    right: var(--spacing-sm);
    bottom: var(--spacing-sm);
    /* Move toast to bottom on mobile */
    top: auto;
    max-width: none;
  }
}

/* ========================================
   ACCESSIBILITY
   ======================================== */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

:focus-visible {
  outline: 2px solid var(--color-accent-bright);
  outline-offset: 2px;
}