/* Common Styles for Energy Simulations Platform */

:root {
  /* Industrial Solar Palette */
  --primary-color: #F59E0B;        /* Amber - primary actions */
  --primary-dark: #D97706;         /* Amber dark - hover */
  --primary-light: #FDE68A;        /* Soft highlight */
  --secondary-color: #F97316;      /* Orange secondary */
  --accent-color: #FDE68A;         /* Highlight */
  --accent-light: #FFF7D6;         /* Soft highlight */
  
  /* Neutrals */
  --text-primary: #0B0F14;         /* Strong text */
  --text-secondary: #4B5563;       /* Secondary text */
  --text-muted: #6B7280;           /* Muted */
  --bg-white: #FFFFFF;             /* Cards */
  --bg-light: #F8FAFC;             /* Page background */
  --bg-dark: #111827;              /* Dark elements */
  --border-color: #E5E7EB;         /* Light border */
  --border-dark: #CBD5E1;          /* Darker border */
  
  /* Semantic - Matte professional tones */
  --success-color: #3D7A4A;        /* Matte forest green - success */
  --success-light: #E8F5E9;        /* Light green background */
  --success-dark: #2D5A37;         /* Dark green - hover */
  --error-color: #A63D40;          /* Matte brick red - errors */
  --error-light: #FDEAEA;          /* Light red background */
  --error-dark: #7D2E30;           /* Dark red - hover */
  --warning-color: #D97706;        /* Amber warning */
  --warning-light: #FFF8E1;        /* Light warning background */
  --info-color: #4B6A88;           /* Matte steel blue - info */
  --info-light: #E3EDF5;           /* Light info background */
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  min-height: 100vh;
  color: var(--text-primary);
  background-color: var(--bg-white);
  line-height: 1.6;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.875rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

/* Buttons */
.btn {
  padding: 12px 24px;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 14px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  outline: none;
}

.btn-primary {
  background: var(--primary-color);
  color: #0B0F14;
  box-shadow: 0 2px 8px rgba(255, 107, 53, 0.25);
  border: none;
}

.btn-primary:hover:not(:disabled) {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(255, 107, 53, 0.35);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}
.btn-secondary {
  background: var(--bg-white);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

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

.btn-success {
  background: var(--success-color);
  color: white;
  box-shadow: 0 2px 8px rgba(61, 122, 74, 0.25);
}

.btn-success:hover:not(:disabled) {
  background: var(--success-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(61, 122, 74, 0.35);
}

.btn-danger {
  background: var(--error-color);
  color: white;
  box-shadow: 0 2px 8px rgba(166, 61, 64, 0.25);
}

.btn-danger:hover:not(:disabled) {
  background: var(--error-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(166, 61, 64, 0.35);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 16px;
}

/* Cards */
.card {
  background: var(--bg-white);
  border-radius: 8px;
  padding: 24px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.08);
  margin-bottom: 20px;
  border: 1px solid var(--border-color);
  transition: all 0.2s ease;
}

.card:hover {
  box-shadow: 0 4px 12px rgba(0,0,0,0.12);
  border-color: var(--primary-color);
}

.card-header {
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--bg-light);
}

.card-header h2 {
  color: var(--text-primary);
  margin-bottom: 8px;
  font-size: 1.5rem;
}

.card-header p {
  color: var(--text-muted);
  font-size: 14px;
  margin: 0;
}

/* Form Elements */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  color: var(--text-primary);
  font-weight: 500;
  font-size: 14px;
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
  transition: all 0.2s ease;
  background-color: white;
  color: var(--text-primary);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.15);
}

.form-group input:disabled,
.form-group select:disabled,
.form-group textarea:disabled {
  background-color: var(--bg-light);
  cursor: not-allowed;
  opacity: 0.6;
}

.form-group small {
  display: block;
  margin-top: 4px;
  color: var(--text-muted);
  font-size: 12px;
}

.form-group.error input,
.form-group.error select,
.form-group.error textarea {
  border-color: var(--error-color);
}

.form-group.error .error-message {
  color: var(--error-color);
  font-size: 13px;
  margin-top: 4px;
}

/* Alerts */
.alert {
  padding: 16px 20px;
  border-radius: 8px;
  margin: 16px 0;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14px;
  line-height: 1.5;
  border-left: 4px solid;
}

.alert-info {
  background: var(--info-light);
  color: var(--info-color);
  border-left-color: var(--info-color);
}

.alert-success {
  background: var(--success-light);
  color: var(--success-color);
  border-left-color: var(--success-color);
}

.alert-error {
  background: var(--error-light);
  color: var(--error-color);
  border-left-color: var(--error-color);
}

.alert-warning {
  background: var(--warning-light);
  color: var(--warning-color);
  border-left-color: var(--warning-color);
}

.alert-title {
  font-weight: 600;
  margin-bottom: 4px;
}

/* Utility Classes */
.hidden {
  display: none !important;
}

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

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

.font-bold { font-weight: 600; }
.font-normal { font-weight: 400; }

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success-color); }
.text-error { color: var(--error-color); }
.text-warning { color: var(--warning-color); }
.text-info { color: var(--info-color); }

/* Status badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-success {
  background: var(--success-light);
  color: var(--success-color);
  border: 1px solid var(--success-color);
}

.badge-error {
  background: var(--error-light);
  color: var(--error-color);
  border: 1px solid var(--error-color);
}

.badge-warning {
  background: var(--warning-light);
  color: var(--warning-color);
  border: 1px solid var(--warning-color);
}

.badge-info {
  background: var(--info-light);
  color: var(--info-color);
  border: 1px solid var(--info-color);
}

/* Spacing */
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mt-5 { margin-top: 48px; }

.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }
.mb-5 { margin-bottom: 48px; }

.px-1 { padding-left: 8px; padding-right: 8px; }
.px-2 { padding-left: 16px; padding-right: 16px; }
.px-3 { padding-left: 24px; padding-right: 24px; }
.px-4 { padding-left: 32px; padding-right: 32px; }

.py-1 { padding-top: 8px; padding-bottom: 8px; }
.py-2 { padding-top: 16px; padding-bottom: 16px; }
.py-3 { padding-top: 24px; padding-bottom: 24px; }
.py-4 { padding-top: 32px; padding-bottom: 32px; }

/* Grid System */
.grid {
  display: grid;
  gap: 20px;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.flex {
  display: flex;
}

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

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

.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.gap-3 { gap: 24px; }

/* Loading Spinner - Use .loading-inline for button/inline spinners */
.loading-inline {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 3px solid rgba(245, 158, 11, 0.2);
  border-radius: 50%;
  border-top-color: var(--primary-color);
  animation: spin 0.8s linear infinite;
}

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

.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.loading-overlay .loading-inline {
  width: 48px;
  height: 48px;
  border-width: 4px;
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  border-radius: 8px;
  overflow: hidden;
}

thead {
  background: var(--bg-light);
}

th, td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

th {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

td {
  color: var(--text-secondary);
  font-size: 14px;
}

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

tbody tr:hover {
  background: var(--bg-light);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  line-height: 1;
}

.badge-primary {
  background: rgba(255, 107, 53, 0.1);
  color: var(--primary-color);
  border: 1px solid rgba(255, 107, 53, 0.3);
}

.badge-success {
  background: rgba(72, 187, 120, 0.1);
  color: var(--success-color);
}

.badge-error {
  background: rgba(245, 101, 101, 0.1);
  color: var(--error-color);
}

.badge-warning {
  background: rgba(237, 137, 54, 0.1);
  color: var(--warning-color);
}

.badge-info {
  background: rgba(66, 153, 225, 0.1);
  color: var(--info-color);
}

/* Divider */
.divider {
  height: 1px;
  background: var(--border-color);
  margin: 24px 0;
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 10px;
  }
  
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
  
  h1 { font-size: 1.875rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }
  
  .btn {
    width: 100%;
  }
  
  table {
    font-size: 12px;
  }
  
  th, td {
    padding: 8px 12px;
  }
}

/* Ensure headings/text in dark/colored page headers inherit the container's color
   This overrides the global h1-h6 { color: var(--text-primary) } rule so that
   white text on dark backgrounds remains readable */
.page-header h1, .page-header h2, .page-header h3, .page-header h4,
.page-header p, .page-header .subtitle, .page-header span {
  color: inherit;
}

/* Focus Visible for Accessibility */
:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Smooth Scrolling */
html {
  scroll-behavior: smooth;
}

/* Selection */
::selection {
  background: var(--accent-light);
  color: var(--text-primary);
}