/**
 * EV Station Foundation - Cyber-Green Theme
 * Design System: Slate-950 + Emerald-500
 */

:root {
  /* Colors - Cyber Green Theme */
  --color-bg-primary: #0f172a;
  /* Slate-950 */
  --color-bg-secondary: #1e293b;
  /* Slate-800 */
  --color-bg-card: #1e293b;
  --color-bg-card-hover: #334155;
  /* Slate-700 */

  --color-accent-primary: #10b981;
  /* Emerald-500 */
  --color-accent-hover: #059669;
  /* Emerald-600 */
  --color-accent-light: #34d399;
  /* Emerald-400 */

  --color-text-primary: #f8fafc;
  /* Slate-50 */
  --color-text-secondary: #cbd5e1;
  /* Slate-300 */
  --color-text-muted: #94a3b8;
  /* Slate-400 */

  --color-warning: #f59e0b;
  /* Amber-500 */
  --color-danger: #ef4444;
  /* Red-500 */
  --color-success: #10b981;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-thai: 'Sarabun', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(16, 185, 129, 0.3);

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

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

html {
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Thai Language Support */
:lang(th) {
  font-family: var(--font-thai);
}

/* Container */
.container {
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* Header */
.app-header {
  background: var(--color-bg-secondary);
  border-bottom: 1px solid rgba(16, 185, 129, 0.2);
  padding: var(--spacing-lg) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.logo h1 {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-accent-light), var(--color-accent-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-meta {
  display: flex;
  gap: var(--spacing-lg);
  align-items: center;
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

.version {
  background: var(--color-accent-primary);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.75rem;
}

/* Main Grid Layout */
.app-main {
  padding: var(--spacing-2xl) 0;
}

.app-grid {
  display: grid;
  grid-template-columns: 1fr 450px;
  gap: var(--spacing-xl);
}

/* Panels */
.left-panel,
.right-panel {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

/* Card Component */
.card {
  background: var(--color-bg-card);
  border: 1px solid rgba(16, 185, 129, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.card:hover {
  border-color: rgba(16, 185, 129, 0.3);
  box-shadow: var(--shadow-glow);
}

.card h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
  color: var(--color-accent-light);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
}

.card-header h2 {
  margin: 0;
}

/* Project Info Grid */
.info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.info-item label {
  display: block;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xs);
}

.info-item input {
  width: 100%;
  background: var(--color-bg-primary);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--color-text-primary);
  font-size: 0.875rem;
  transition: all var(--transition-fast);
}

.info-item input:focus {
  outline: none;
  border-color: var(--color-accent-primary);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.info-item .value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent-primary);
  margin-top: var(--spacing-xs);
}

.transformer-display {
  display: flex;
  align-items: baseline;
  gap: var(--spacing-sm);
}

.transformer-display .size {
  font-size: 1.5rem;
  font-weight: 700;
}

.transformer-display .load-factor {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* SLD Canvas */
.sld-canvas {
  min-height: 600px;
  background: var(--color-bg-primary);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: visible;
}

.sld-canvas svg {
  max-width: 100%;
  height: auto;
  overflow: visible;
}

/* BOQ Table */
.boq-table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-md);
}

.boq-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.boq-table thead {
  background: rgba(16, 185, 129, 0.1);
}

.boq-table th {
  padding: var(--spacing-md);
  text-align: left;
  font-weight: 600;
  color: var(--color-accent-light);
  border-bottom: 2px solid var(--color-accent-primary);
}

.boq-table td {
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.boq-table tr:hover td {
  background: rgba(16, 185, 129, 0.05);
}

.boq-table .category-header {
  background: rgba(16, 185, 129, 0.15);
  font-weight: 600;
  color: var(--color-accent-light);
}

.boq-table .subtotal-row {
  background: rgba(16, 185, 129, 0.1);
  font-weight: 600;
  border-top: 1px solid rgba(16, 185, 129, 0.3);
}

.boq-table .total-row {
  background: var(--color-accent-primary);
  color: white;
  font-weight: 700;
  font-size: 1rem;
}

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

.boq-table .note {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-style: italic;
}

/* ROI Cards */
.roi-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
}

.roi-card {
  background: var(--color-bg-primary);
  border: 2px solid rgba(16, 185, 129, 0.2);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-normal);
}

.roi-card:hover {
  border-color: var(--color-accent-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.roi-card h3 {
  font-size: 1rem;
  margin-bottom: var(--spacing-md);
  color: var(--color-accent-light);
}

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

.roi-metric label {
  display: block;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-bottom: 0.25rem;
}

.roi-metric .value {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.roi-metric.highlight .value {
  color: var(--color-accent-primary);
  font-size: 1.5rem;
}

/* Form Controls */
.config-group {
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.config-group:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.form-group.full-width {
  grid-column: 1 / -1;
}

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

.form-group input[type="number"],
.form-group select {
  background: var(--color-bg-primary);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--color-text-primary);
  font-size: 0.875rem;
  transition: all var(--transition-fast);
  width: 100%;
}

.form-group input[type="number"]:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-accent-primary);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.form-group .unit {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: -0.25rem;
}

/* Checkbox Controls */
.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.checkbox-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.checkbox-item:hover {
  background: rgba(16, 185, 129, 0.05);
}

.checkbox-item input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--color-accent-primary);
}

.checkbox-item .price {
  font-size: 0.875rem;
  color: var(--color-accent-light);
  font-weight: 600;
}

/* Radio Controls */
.radio-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.radio-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition-fast);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.radio-item:hover {
  background: rgba(16, 185, 129, 0.05);
  border-color: var(--color-accent-primary);
}

.radio-item input[type="radio"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--color-accent-primary);
}

.radio-item span {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

/* Hint Text */
.hint {
  display: block;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: var(--spacing-xs);
  font-style: italic;
}

/* Warning Box */
.warning-box {
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid var(--color-warning);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  color: var(--color-warning);
  font-size: 0.875rem;
  margin-top: var(--spacing-sm);
}

/* Buttons */
.btn-calculate,
.btn-primary,
.btn-secondary {
  padding: var(--spacing-md) var(--spacing-xl);
  border: none;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  width: 100%;
}

.btn-calculate,
.btn-primary {
  background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-hover));
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-calculate:hover,
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

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

.btn-secondary {
  background: var(--color-bg-primary);
  color: var(--color-accent-primary);
  border: 2px solid var(--color-accent-primary);
}

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

/* Info Card */
.info-card {
  background: rgba(16, 185, 129, 0.05);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.info-list {
  list-style: none;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.info-list li {
  padding: var(--spacing-xs) 0;
  padding-left: var(--spacing-lg);
  position: relative;
}

.info-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--color-accent-primary);
  font-weight: bold;
}

/* Footer */
.app-footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid rgba(16, 185, 129, 0.2);
  padding: var(--spacing-xl) 0;
  text-align: center;
  margin-top: var(--spacing-2xl);
}

.app-footer p {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  margin: 0.25rem 0;
}

.disclaimer {
  font-size: 0.75rem !important;
  font-style: italic;
}

/* Responsive Design */

/* Tablet (Portrait) */
@media (max-width: 1200px) {
  .app-grid {
    grid-template-columns: 1fr;
  }

  .right-panel {
    order: -1;
  }

  .info-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .header-content {
    flex-wrap: wrap;
    gap: var(--spacing-md);
  }

  .header-meta {
    flex-wrap: wrap;
  }
}

/* Mobile (Landscape) */
@media (max-width: 768px) {
  :root {
    font-size: 14px;
  }

  .container {
    padding: 0 var(--spacing-md);
  }

  .app-header {
    padding: var(--spacing-md) 0;
  }

  .logo h1 {
    font-size: 1.25rem;
  }

  .header-meta {
    font-size: 0.75rem;
    gap: var(--spacing-sm);
  }

  .header-meta a {
    padding: 0.375rem 0.75rem !important;
    font-size: 0.75rem !important;
  }

  .version {
    font-size: 0.625rem;
    padding: 0.125rem 0.5rem;
  }

  .app-main {
    padding: var(--spacing-lg) 0;
  }

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

  .card h2 {
    font-size: 1.125rem;
  }

  .info-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

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

  .roi-grid {
    grid-template-columns: 1fr;
  }

  /* SLD Diagram - Make scrollable on mobile */
  .sld-canvas {
    min-height: 400px;
    overflow-x: auto;
    overflow-y: visible;
  }

  .sld-canvas svg {
    min-width: 600px;
  }

  /* BOQ Table - Horizontal scroll */
  .boq-table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .boq-table {
    min-width: 600px;
    font-size: 0.75rem;
  }

  .boq-table th,
  .boq-table td {
    padding: var(--spacing-xs) var(--spacing-sm);
  }

  /* Buttons */
  .btn-calculate,
  .btn-primary,
  .btn-secondary {
    font-size: 0.875rem;
    padding: var(--spacing-sm) var(--spacing-lg);
  }

  /* Touch-friendly controls */
  .checkbox-item,
  .radio-item {
    padding: var(--spacing-md);
    min-height: 44px;
  }

  .checkbox-item input[type="checkbox"],
  .radio-item input[type="radio"] {
    width: 20px;
    height: 20px;
  }
}

/* Mobile (Portrait) */
@media (max-width: 480px) {
  :root {
    font-size: 13px;
  }

  .container {
    padding: 0 var(--spacing-sm);
  }

  .logo h1 {
    font-size: 1rem;
  }

  .logo svg {
    width: 24px;
    height: 24px;
  }

  .header-meta {
    width: 100%;
    justify-content: space-between;
  }

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

  .card h2 {
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
  }

  .card h3 {
    font-size: 0.875rem;
  }

  /* Hide complex features on very small screens */
  .roi-section {
    display: none;
  }

  /* Stack everything */
  .config-group {
    margin-bottom: var(--spacing-lg);
  }

  /* Increase touch targets */
  button {
    min-height: 44px;
  }

  input[type="number"],
  select {
    min-height: 44px;
    font-size: 16px;
    /* Prevent zoom on iOS */
  }

  /* Simplify info grid */
  .info-grid {
    gap: var(--spacing-sm);
  }

  .info-item .value {
    font-size: 1.25rem;
  }

  /* Export button - smaller */
  #exportBOQ {
    font-size: 0.75rem;
    padding: var(--spacing-xs) var(--spacing-sm);
  }

  #exportBOQ svg {
    width: 16px;
    height: 16px;
  }
}

/* Print Styles for Export */
@media print {
  body {
    background: white;
    color: black;
  }

  .app-header,
  .right-panel,
  .app-footer,
  button {
    display: none;
  }
}

/* Animations */
@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

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

.card {
  animation: slideIn var(--transition-normal) ease-out;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--color-accent-primary);
  border-radius: var(--radius-md);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent-hover);
}