/* Maine Revenue Sharing & TIF Tax Shift Calculator - Styles */
/* Modern, premium design with glassmorphism and smooth animations */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* CSS Custom Properties - Design System */
:root {
  /* Colors - Light, high-contrast palette */
  --color-primary: hsl(220, 90%, 45%);
  --color-primary-dark: hsl(220, 90%, 35%);
  --color-primary-light: hsl(220, 90%, 55%);
  --color-secondary: hsl(280, 70%, 50%);
  --color-accent: hsl(170, 70%, 40%);
  --color-success: hsl(140, 65%, 40%);
  --color-warning: hsl(35, 90%, 50%);
  --color-error: hsl(0, 75%, 50%);

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, hsl(220, 90%, 45%), hsl(280, 70%, 50%));
  --gradient-background: linear-gradient(135deg, hsl(220, 30%, 97%), hsl(280, 30%, 98%));
  --gradient-card: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.9));

  /* Neutral colors */
  --color-white: hsl(0, 0%, 100%);
  --color-gray-50: hsl(220, 20%, 98%);
  --color-gray-100: hsl(220, 18%, 95%);
  --color-gray-200: hsl(220, 16%, 88%);
  --color-gray-300: hsl(220, 14%, 70%);
  --color-gray-400: hsl(220, 12%, 55%);
  --color-gray-500: hsl(220, 10%, 40%);
  --color-gray-600: hsl(220, 12%, 30%);
  --color-gray-700: hsl(220, 15%, 20%);
  --color-gray-800: hsl(220, 18%, 15%);
  --color-gray-900: hsl(220, 20%, 10%);
  --color-text: hsl(220, 20%, 15%);

  /* Theme-aware colors for light mode */
  --bg-primary: hsl(0, 0%, 100%);
  --bg-secondary: hsl(220, 20%, 98%);
  --text-primary: hsl(220, 20%, 15%);
  --text-secondary: hsl(220, 12%, 30%);
  --border-color: hsl(220, 16%, 88%);
  --card-bg: rgba(255, 255, 255, 0.95);
  --input-bg: hsl(0, 0%, 100%);
  --hover-bg: hsl(220, 18%, 95%);

  /* Spacing - More compact */
  --space-xs: 0.375rem;
  --space-sm: 0.625rem;
  --space-md: 1rem;
  --space-lg: 1.25rem;
  --space-xl: 1.75rem;
  --space-2xl: 2.5rem;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Border radius */
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.18);
  --shadow-glow: 0 0 20px rgba(93, 157, 255, 0.4);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 400ms ease;
}

/* Dark theme variables */
[data-theme="dark"] {
  --bg-primary: hsl(220, 20%, 10%);
  --bg-secondary: hsl(220, 18%, 15%);
  --text-primary: hsl(220, 20%, 95%);
  --text-secondary: hsl(220, 14%, 75%);
  --border-color: hsl(220, 15%, 30%);
  --card-bg: rgba(30, 41, 59, 0.95);
  --input-bg: hsl(220, 18%, 18%);
  --hover-bg: hsl(220, 18%, 22%);
  --color-text: hsl(220, 20%, 95%);
  --gradient-background: linear-gradient(135deg, hsl(220, 25%, 8%), hsl(280, 25%, 10%));
  --gradient-card: linear-gradient(135deg, rgba(30, 41, 59, 0.95), rgba(30, 41, 59, 0.9));
  --color-gray-600: hsl(220, 14%, 75%);
  --color-gray-700: hsl(220, 14%, 80%);
}

/* Theme toggle button */
.theme-toggle {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 1000;
  background: var(--card-bg);
  border: 2px solid var(--border-color);
  border-radius: 50%;
  width: 45px;
  height: 45px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-md);
  font-family: var(--font-family);
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
}

.theme-toggle:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.theme-toggle-icon {
  font-size: 1.2rem;
  line-height: 1;
}

.theme-toggle-text {
  display: none;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-weight: var(--font-weight-normal);
  line-height: 1.5;
  color: var(--text-primary);
  background: var(--gradient-background);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  transition: background var(--transition-normal), color var(--transition-normal);
}

/* Animated background gradient */
body::before {
  content: '';
  position: fixed;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(93, 157, 255, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(168, 85, 247, 0.08) 0%, transparent 50%);
  animation: rotateBackground 20s linear infinite;
  z-index: -1;
}

@keyframes rotateBackground {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

/* Container */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--space-md);
}

/* Header */
header {
  padding: var(--space-md) 0;
  text-align: center;
}

header h1 {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: var(--font-weight-bold);
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-xs);
  animation: fadeInDown 0.8s ease;
}

header p {
  font-size: clamp(0.875rem, 1.8vw, 1rem);
  color: var(--color-gray-600);
  font-weight: var(--font-weight-normal);
  animation: fadeIn 1s ease 0.2s backwards;
}

/* Navigation */
nav {
  margin: var(--space-lg) 0;
}

.nav-links {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
  list-style: none;
}

.nav-links a {
  padding: var(--space-sm) var(--space-md);
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  font-size: 0.9rem;
  transition: all var(--transition-normal);
}

.nav-links a:hover {
  background: var(--hover-bg);
  border-color: var(--color-primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.nav-links a.active {
  background: var(--gradient-primary);
  border-color: transparent;
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

/* Main Content */
main {
  min-height: 60vh;
  padding: var(--space-md) 0;
}

/* Cards */
.card {
  background: var(--card-bg);
  backdrop-filter: blur(20px);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin-bottom: var(--space-md);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal), 
              background-color var(--transition-normal),
              border-color var(--transition-normal);
  animation: fadeInUp 0.6s ease backwards;
}

.card:hover {
  border-color: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-md);
}

.card h2 {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.card h3 {
  font-size: clamp(1.1rem, 2vw, 1.25rem);
  font-weight: var(--font-weight-semibold);
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
  margin-top: var(--space-md);
}

.card p {
  color: var(--color-gray-700);
  margin-bottom: var(--space-sm);
  line-height: 1.6;
  font-size: 0.95rem;
}

/* Forms */
.form-group {
  margin-bottom: var(--space-sm);
}

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

.form-group label {
  display: block;
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
  margin-bottom: var(--space-xs);
  font-size: 0.875rem;
}

[data-theme="dark"] .form-group label {
  color: var(--text-secondary);
}

.form-group input,
.form-group select {
  width: 100%;
  padding: var(--space-sm) var(--space-sm);
  background: var(--input-bg);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  background: var(--input-bg);
  box-shadow: 0 0 0 3px rgba(93, 157, 255, 0.15);
}

[data-theme="light"] .form-group input:focus,
[data-theme="light"] .form-group select:focus {
  background: var(--color-white);
}

.form-group input::placeholder {
  color: var(--color-gray-400);
}

.form-group small {
  display: block;
  margin-top: var(--space-xs);
  color: var(--color-gray-600);
  font-size: 0.8rem;
}

/* Buttons */
.btn {
  padding: var(--space-sm) var(--space-md);
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--radius-sm);
  color: var(--color-white);
  font-family: var(--font-family);
  font-size: 0.9rem;
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary {
  background: linear-gradient(135deg, var(--color-gray-500), var(--color-gray-600));
}

.btn-block {
  width: 100%;
  display: block;
}

/* Results Section */
.results {
  margin-top: var(--space-md);
  padding: var(--space-md);
  background: linear-gradient(135deg, rgba(93, 157, 255, 0.08), rgba(76, 201, 171, 0.08));
  border: 1.5px solid var(--color-accent);
  border-radius: var(--radius-md);
  animation: slideIn 0.4s ease;
}

.results.hidden {
  display: none;
}

.results h3 {
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
  font-size: 1.1rem;
}

.result-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-xs) 0;
  border-bottom: 1px solid var(--color-gray-200);
}

[data-theme="dark"] .result-item {
  border-bottom-color: var(--border-color);
}

.result-item:last-child {
  border-bottom: none;
}

.result-label {
  color: var(--text-secondary);
  font-weight: var(--font-weight-medium);
  font-size: 0.9rem;
}

.result-value {
  font-size: 1.1rem;
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

.result-value.highlight {
  color: var(--color-accent);
  font-size: 1.25rem;
}

/* Calculator Sections */
.calculator-section {
  margin-bottom: var(--space-xl);
}

.calculator-section:last-child {
  margin-bottom: 0;
}

/* Two-column layout for calculator sections */
.calc-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-md);
}

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

.calc-inputs {
  display: flex;
  flex-direction: column;
}

.calc-results-wrapper {
  grid-column: 1 / -1;
}

@media (max-width: 968px) {
  .calc-layout {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
  
  .calc-results-wrapper {
    grid-column: 1;
  }
}

/* Info Box */
.info-box {
  padding: var(--space-sm);
  background: rgba(93, 157, 255, 0.06);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-md);
}

[data-theme="dark"] .info-box {
  background: rgba(93, 157, 255, 0.12);
  border-left-color: #60a5fa;
}

.info-box p {
  color: var(--color-gray-700);
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.5;
}

[data-theme="dark"] .info-box p {
  color: var(--text-secondary);
}

/* Alert Messages */
.alert {
  padding: var(--space-sm);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-sm);
  animation: slideIn 0.3s ease;
  font-size: 0.9rem;
}

.alert.error {
  background: rgba(239, 68, 68, 0.1);
  border: 1.5px solid var(--color-error);
  color: var(--color-error);
}

.alert.success {
  background: rgba(76, 201, 171, 0.1);
  border: 1.5px solid var(--color-success);
  color: var(--color-success);
}

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

/* Footer */
footer {
  text-align: center;
  padding: var(--space-lg) 0;
  margin-top: var(--space-xl);
  border-top: 1.5px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

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

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

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

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

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }

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

/* Responsive Design */

/* Tablet breakpoint */
@media (max-width: 992px) {
  .form-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .calc-layout {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
  
  .calc-results-wrapper {
    grid-column: 1;
  }
}

/* Mobile breakpoint */
@media (max-width: 768px) {
  :root {
    --space-lg: 1rem;
    --space-xl: 1.5rem;
    --space-2xl: 2rem;
  }

  html {
    font-size: 15px;
  }

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

  .card {
    padding: var(--space-md);
    margin-bottom: var(--space-sm);
    border-radius: var(--radius-sm);
  }

  .card-grid {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }

  .form-grid {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }

  /* Navigation - horizontal scroll on mobile */
  nav {
    margin: var(--space-md) 0;
  }

  .nav-links {
    flex-direction: row;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: var(--space-xs);
    gap: var(--space-xs);
    justify-content: flex-start;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }

  .nav-links::-webkit-scrollbar {
    display: none;
  }

  .nav-links li {
    flex-shrink: 0;
  }

  .nav-links a {
    text-align: center;
    padding: var(--space-sm) var(--space-md);
    font-size: 0.85rem;
    white-space: nowrap;
  }

  /* Result items stack on mobile */
  .result-item {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-xs);
  }

  .result-value {
    font-size: 1rem;
  }

  .result-value.highlight {
    font-size: 1.15rem;
  }

  /* Theme toggle and user profile positioning */
  .theme-toggle {
    top: 10px;
    right: 10px;
    width: 38px;
    height: 38px;
  }

  .theme-toggle-icon {
    font-size: 1rem;
  }

  /* User profile dropdown positioning fix for mobile */
  .user-profile-container {
    right: 55px;
    top: 10px;
  }

  .user-profile-button {
    width: 38px;
    height: 38px;
    font-size: 1rem;
  }

  .user-profile-dropdown {
    min-width: 180px;
    right: -40px;
  }

  /* Header adjustments */
  header {
    padding: var(--space-sm) 0;
    padding-top: 50px; /* Space for fixed buttons */
  }

  header h1 {
    font-size: clamp(1.25rem, 5vw, 1.75rem);
    line-height: 1.2;
  }

  header p {
    font-size: 0.875rem;
  }

  /* Calculator section spacing */
  .calculator-section {
    margin-bottom: var(--space-md);
  }

  /* Info boxes */
  .info-box {
    padding: var(--space-sm);
    font-size: 0.85rem;
  }

  /* Buttons */
  .btn {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.9rem;
    width: 100%;
  }

  .btn-block {
    padding: var(--space-md);
  }

  /* Footer */
  footer {
    padding: var(--space-md) 0;
    font-size: 0.8rem;
  }
}

/* Small mobile breakpoint - iPhone sized (393px width) */
@media (max-width: 480px) {
  html {
    font-size: 14px;
  }

  .container {
    padding: 8px;
  }

  .card {
    padding: 12px;
  }

  header h1 {
    font-size: 1.15rem;
  }

  .nav-links a {
    padding: 6px 10px;
    font-size: 0.75rem;
  }

  .form-group label {
    font-size: 0.8rem;
  }

  .form-group input,
  .form-group select {
    padding: 8px;
    font-size: 0.9rem;
  }

  .card h2 {
    font-size: 1rem;
  }

  .card h3 {
    font-size: 0.95rem;
  }

  .result-label {
    font-size: 0.8rem;
  }

  /* Tooltips on small screens */
  .tooltip {
    width: 200px;
    font-size: 0.7rem;
    padding: 6px;
  }
}

/* Mobile grid override classes - use these in HTML */
@media (max-width: 768px) {
  .mobile-stack,
  .mobile-1-col {
    display: block !important;
  }
  
  .mobile-1-col > * {
    width: 100% !important;
    margin-bottom: 10px;
  }
  
  .mobile-2-col {
    grid-template-columns: 1fr 1fr !important;
  }
}

@media (max-width: 480px) {
  .mobile-2-col {
    grid-template-columns: 1fr !important;
  }
}

/* Touch-friendly improvements */
@media (hover: none) and (pointer: coarse) {
  /* Larger tap targets */
  .btn {
    min-height: 44px;
  }

  .nav-links a {
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .form-group input,
  .form-group select {
    min-height: 44px;
  }

  .theme-toggle,
  .user-profile-button {
    min-width: 44px;
    min-height: 44px;
  }

  /* Tooltips show on tap - handled via JS typically */
  .tooltip-container:active .tooltip {
    visibility: visible;
    opacity: 1;
  }
}

/* Loading State */
.loading {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2.5px solid var(--color-gray-300);
  border-radius: 50%;
  border-top-color: var(--color-primary);
  animation: spin 0.8s linear infinite;
}

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

/* Stagger animation delays for cards */
.card-grid .card:nth-child(1) {
  animation-delay: 0s;
}

.card-grid .card:nth-child(2) {
  animation-delay: 0.1s;
}

.card-grid .card:nth-child(3) {
  animation-delay: 0.2s;
}

.card-grid .card:nth-child(4) {
  animation-delay: 0.3s;
}