/* Solar Eyes - Main CSS Styles */
/* Solar/Energy Theme with Blues, Greens, and Yellows */

/* CSS Custom Properties for Solar/Energy Theme */
:root {
  /* Primary Solar Colors */
  --solar-yellow: #fbbf24;
  --solar-orange: #f97316;
  --solar-gold: #d97706;
  
  /* Energy Blues */
  --energy-blue: #3b82f6;
  --energy-blue-dark: #1d4ed8;
  --energy-blue-light: #dbeafe;
  
  /* Sustainable Greens */
  --sustainable-green: #10b981;
  --sustainable-green-dark: #047857;
  --sustainable-green-light: #d1fae5;
  
  /* Neutral Colors */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  
  /* Semantic Colors */
  --success: var(--sustainable-green);
  --warning: var(--solar-yellow);
  --error: #ef4444;
  --info: var(--energy-blue);
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 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);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  /* Typography */
  --font-family-sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --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;
  --font-size-4xl: 2.25rem;
}

/* Base Styles */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-sans);
  line-height: 1.6;
  color: var(--gray-800);
  background: linear-gradient(135deg, #dbeafe 0%, #d1fae5 100%);
  min-height: 100vh;
}

/* Typography Enhancements */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: var(--font-size-4xl);
  color: var(--gray-900);
}

h2 {
  font-size: var(--font-size-3xl);
  color: var(--gray-800);
}

h3 {
  font-size: var(--font-size-2xl);
  color: var(--gray-800);
}

h4 {
  font-size: var(--font-size-xl);
  color: var(--gray-700);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--gray-600);
}

/* Enhanced Header Styling */
header {
  background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
  border-bottom: 4px solid var(--solar-yellow);
  box-shadow: var(--shadow-lg);
  position: sticky;
  top: 0;
  z-index: 50;
}

header .container {
  max-width: 1200px;
}

/* Logo Enhancement */
.logo-container {
  background: linear-gradient(135deg, var(--solar-yellow) 0%, var(--solar-orange) 100%);
  border-radius: 50%;
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
}

/* Navigation Enhancements */
nav a {
  position: relative;
  transition: all 0.3s ease;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
}

nav a:hover {
  background-color: var(--energy-blue-light);
  color: var(--energy-blue-dark);
  transform: translateY(-1px);
}

nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--energy-blue);
  transition: all 0.3s ease;
  transform: translateX(-50%);
}

nav a:hover::after {
  width: 80%;
}

/* Section Styling Enhancements */
section {
  margin-bottom: var(--spacing-2xl);
}

.section-card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: all 0.3s ease;
}

.section-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 25px 50px -12px rgb(0 0 0 / 0.25);
}

/* Form Styling Enhancements */
.form-group {
  margin-bottom: var(--spacing-lg);
}

label {
  display: block;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-sm);
}

input[type="text"],
input[type="number"],
input[type="email"],
input[type="tel"],
textarea,
select {
  width: 100%;
  padding: var(--spacing-md);
  border: 2px solid var(--gray-300);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  transition: all 0.3s ease;
  background-color: #ffffff;
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--energy-blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
  transform: translateY(-1px);
}

input:hover,
textarea:hover,
select:hover {
  border-color: var(--gray-400);
}

/* Enhanced Input States */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  height: 8px;
  background: linear-gradient(90deg, var(--energy-blue-light) 0%, var(--sustainable-green-light) 100%);
  border-radius: var(--radius-md);
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  background: linear-gradient(135deg, var(--energy-blue) 0%, var(--sustainable-green) 100%);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-lg);
}

input[type="range"]::-moz-range-thumb {
  width: 20px;
  height: 20px;
  background: linear-gradient(135deg, var(--energy-blue) 0%, var(--sustainable-green) 100%);
  border-radius: 50%;
  cursor: pointer;
  border: none;
  box-shadow: var(--shadow-md);
}

/* Checkbox and Radio Enhancements */
input[type="checkbox"],
input[type="radio"] {
  width: 1.25rem;
  height: 1.25rem;
  accent-color: var(--energy-blue);
  cursor: pointer;
}

/* Button Styling Enhancements */
button {
  font-family: inherit;
  font-weight: 600;
  border-radius: var(--radius-lg);
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--energy-blue) 0%, var(--energy-blue-dark) 100%);
  color: white;
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  background: linear-gradient(135deg, var(--energy-blue-dark) 0%, #1e40af 100%);
}

.btn-secondary {
  background: linear-gradient(135deg, var(--sustainable-green) 0%, var(--sustainable-green-dark) 100%);
  color: white;
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
  box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  background: linear-gradient(135deg, var(--sustainable-green-dark) 0%, #065f46 100%);
}

.btn-accent {
  background: linear-gradient(135deg, var(--solar-yellow) 0%, var(--solar-orange) 100%);
  color: var(--gray-900);
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
  box-shadow: var(--shadow-md);
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  background: linear-gradient(135deg, var(--solar-orange) 0%, var(--solar-gold) 100%);
}

/* Card Enhancements */
.metric-card {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(248, 250, 252, 0.9) 100%);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255, 255, 255, 0.3);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.metric-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--energy-blue) 0%, var(--sustainable-green) 50%, var(--solar-yellow) 100%);
}

.metric-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

/* Chart Container Styling */
.chart-container {
  background: rgba(255, 255, 255, 0.8);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  border: 2px dashed var(--gray-300);
  transition: all 0.3s ease;
}

.chart-container:hover {
  border-color: var(--energy-blue);
  background: rgba(255, 255, 255, 0.95);
}

/* Table Enhancements */
table {
  border-collapse: collapse;
  width: 100%;
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

thead {
  background: linear-gradient(135deg, var(--gray-50) 0%, var(--gray-100) 100%);
}

th {
  padding: var(--spacing-lg);
  text-align: left;
  font-weight: 600;
  color: var(--gray-700);
  border-bottom: 2px solid var(--gray-200);
}

td {
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--gray-200);
  transition: background-color 0.2s ease;
}

tr:hover td {
  background-color: var(--energy-blue-light);
}

/* File Upload Styling */
.file-upload-area {
  border: 3px dashed var(--gray-300);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  text-align: center;
  transition: all 0.3s ease;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.5) 0%, rgba(248, 250, 252, 0.5) 100%);
}

.file-upload-area:hover {
  border-color: var(--energy-blue);
  background: linear-gradient(135deg, rgba(219, 234, 254, 0.5) 0%, rgba(209, 250, 229, 0.5) 100%);
  transform: translateY(-2px);
}

.file-upload-area.dragover {
  border-color: var(--sustainable-green);
  background: var(--sustainable-green-light);
  transform: scale(1.02);
}

/* Alert/Info Box Styling */
.info-box {
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
  border-left: 4px solid;
}

.info-box.info {
  background: var(--energy-blue-light);
  border-color: var(--energy-blue);
  color: var(--energy-blue-dark);
}

.info-box.success {
  background: var(--sustainable-green-light);
  border-color: var(--sustainable-green);
  color: var(--sustainable-green-dark);
}

.info-box.warning {
  background: #fef3c7;
  border-color: var(--solar-yellow);
  color: #92400e;
}

.info-box.error {
  background: #fee2e2;
  border-color: var(--error);
  color: #991b1b;
}

/* Footer Enhancements */
footer {
  background: linear-gradient(135deg, var(--gray-800) 0%, var(--gray-900) 100%);
  color: white;
  position: relative;
}

footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--energy-blue) 0%, var(--sustainable-green) 50%, var(--solar-yellow) 100%);
}

/* Responsive Design */
@media (max-width: 768px) {
  :root {
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.5rem;
    --font-size-2xl: 1.25rem;
  }
  
  .container {
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
  }
  
  header .flex {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  nav {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
  }
  
  .grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .metric-card {
    padding: var(--spacing-lg);
  }
  
  button {
    width: 100%;
    padding: var(--spacing-lg);
  }
}

@media (max-width: 480px) {
  .section-card {
    margin: var(--spacing-md);
    padding: var(--spacing-lg);
  }
  
  table {
    font-size: var(--font-size-sm);
  }
  
  th, td {
    padding: var(--spacing-sm);
  }
}

/* Animation Classes */
.fade-in {
  animation: fadeIn 0.6s ease-in;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.slide-in-left {
  animation: slideInLeft 0.6s ease-out;
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.slide-in-right {
  animation: slideInRight 0.6s ease-out;
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Loading States */
.loading {
  position: relative;
  overflow: hidden;
}

.loading::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.6), transparent);
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% {
    left: -100%;
  }
  100% {
    left: 100%;
  }
}

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

/* Focus Styles */
*:focus {
  outline: 2px solid var(--energy-blue);
  outline-offset: 2px;
}

button:focus,
input:focus,
select:focus,
textarea:focus {
  outline: 2px solid var(--energy-blue);
  outline-offset: 2px;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  :root {
    --gray-300: #000000;
    --gray-600: #000000;
    --gray-700: #000000;
  }
  
  .section-card {
    border: 2px solid var(--gray-800);
  }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  html {
    scroll-behavior: auto;
  }
}

/* Print Styles */
@media print {
  body {
    background: white;
    color: black;
  }
  
  .section-card {
    box-shadow: none;
    border: 1px solid #ccc;
  }
  
  button {
    display: none;
  }
  
  nav {
    display: none;
  }
}