@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,100..1000;1,9..40,100..1000&display=swap');

:root {
  /* Color Palette (Warm Cream & Slate Blue) */
  --bg-raw: 40 20% 98%;
  --fg-raw: 220 25% 14%;
  --card-raw: 0 0% 100%;
  --card-fg-raw: 220 25% 14%;
  --accent-raw: 38 92% 50%; /* Vibrant Amber */
  --accent-light-raw: 38 92% 92%;
  --accent-dark-raw: 25 90% 50%; /* Deep Orange */
  --border-raw: 30 15% 88%;
  --muted-raw: 38 20% 94%;
  --muted-fg-raw: 220 10% 45%;
  --shadow-color: 220 25% 14%;
  
  /* Apply Colors */
  --background: hsl(var(--bg-raw));
  --foreground: hsl(var(--fg-raw));
  --card: hsl(var(--card-raw));
  --card-foreground: hsl(var(--card-fg-raw));
  --accent: hsl(var(--accent-raw));
  --accent-light: hsl(var(--accent-light-raw));
  --accent-dark: hsl(var(--accent-dark-raw));
  --border: hsl(var(--border-raw));
  --muted: hsl(var(--muted-raw));
  --muted-foreground: hsl(var(--muted-fg-raw));

  /* Typography & Layout */
  --font-sans: 'DM Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  
  /* Transitions & Shadows */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 2px 8px -1px hsla(var(--shadow-color) / 0.05);
  --shadow-md: 0 10px 25px -5px hsla(var(--shadow-color) / 0.08), 0 8px 16px -6px hsla(var(--shadow-color) / 0.05);
  --shadow-lg: 0 20px 40px -10px hsla(var(--shadow-color) / 0.12);
  --shadow-accent: 0 12px 24px -6px hsla(var(--accent-raw) / 0.2);
}

.dark {
  /* Dark Mode Overrides (Deep Slate Slate) */
  --bg-raw: 222 30% 6%;
  --fg-raw: 38 20% 92%;
  --card-raw: 222 25% 10%;
  --card-fg-raw: 38 20% 92%;
  --accent-raw: 38 92% 52%;
  --accent-light-raw: 38 30% 16%;
  --accent-dark-raw: 38 100% 60%;
  --border-raw: 222 20% 18%;
  --muted-raw: 222 20% 14%;
  --muted-fg-raw: 220 10% 65%;
  --shadow-color: 0 0% 0%;
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  background-color: var(--background);
  color: var(--foreground);
  transition: background-color 0.3s ease, color 0.3s ease;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: hsla(var(--bg-raw) / 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.5px;
}

.logo span {
  color: var(--accent);
}

nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

nav a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--muted-foreground);
}

nav a:hover, nav a.active {
  color: var(--foreground);
}

.controls-group {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Theme Toggle */
.theme-toggle {
  background: var(--muted);
  border: 1px solid var(--border);
  padding: 8px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--foreground);
  transition: var(--transition);
}

.theme-toggle:hover {
  background-color: var(--border);
  transform: rotate(15deg);
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
}

.theme-toggle .sun-icon {
  display: none;
}

.dark .theme-toggle .moon-icon {
  display: none;
}

.dark .theme-toggle .sun-icon {
  display: block;
}

/* Action Button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.95rem;
  border: none;
}

.btn-primary {
  background-color: var(--foreground);
  color: var(--background);
}

.btn-primary:hover {
  background-color: var(--accent);
  color: hsl(220, 25%, 14%);
  transform: translateY(-2px);
  box-shadow: var(--shadow-accent);
}

.btn-secondary {
  background-color: var(--muted);
  border: 1px solid var(--border);
  color: var(--foreground);
}

.btn-secondary:hover {
  background-color: var(--border);
  transform: translateY(-2px);
}

/* Hero Section */
.hero {
  padding: 80px 0 60px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, hsla(var(--accent-raw) / 0.05) 0%, transparent 60%);
  pointer-events: none;
  z-index: -1;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background-color: var(--accent-light);
  color: var(--accent-dark);
  font-size: 0.8rem;
  font-weight: 700;
  border-radius: 100px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border: 1px solid hsla(var(--accent-raw) / 0.2);
  margin-bottom: 24px;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 hsla(var(--accent-raw) / 0.4); }
  70% { box-shadow: 0 0 0 8px hsla(var(--accent-raw) / 0); }
  100% { box-shadow: 0 0 0 0 hsla(var(--accent-raw) / 0); }
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1.5px;
  margin-bottom: 20px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.hero p.lead {
  font-size: 1.25rem;
  color: var(--muted-foreground);
  max-width: 650px;
  margin: 0 auto 32px auto;
}

.meta-info {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  font-size: 0.9rem;
  color: var(--muted-foreground);
  flex-wrap: wrap;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Main Layout Grid */
.main-grid {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: 40px;
  margin-bottom: 80px;
  align-items: start;
}

@media (max-width: 968px) {
  .main-grid {
    grid-template-columns: 1fr;
  }
}

/* Article Styling */
.article-card {
  background-color: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.author-profile {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.author-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.25rem;
  font-weight: 700;
  border: 2px solid var(--background);
  box-shadow: var(--shadow-sm);
}

.author-info h4 {
  font-size: 1.05rem;
  font-weight: 700;
}

.author-info p {
  font-size: 0.85rem;
  color: var(--muted-foreground);
}

.article-content {
  font-size: 1.05rem;
  color: var(--foreground);
}

.article-content p {
  margin-bottom: 20px;
}

.blockquote-style {
  position: relative;
  background-color: var(--muted);
  border-left: 4px solid var(--accent);
  padding: 24px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 32px 0;
  font-style: italic;
  font-size: 1.1rem;
}

.blockquote-style p:last-child {
  margin-bottom: 0;
}

.highlight-box {
  background-color: hsla(var(--accent-raw) / 0.05);
  border: 1px dashed hsla(var(--accent-raw) / 0.3);
  padding: 20px;
  border-radius: var(--radius-md);
  margin: 24px 0;
}

.highlight-box h5 {
  font-weight: 700;
  color: var(--accent-dark);
  margin-bottom: 8px;
  font-size: 1rem;
}

.highlight-box p {
  font-size: 0.95rem;
  margin-bottom: 0;
  color: var(--muted-foreground);
}

/* Calculator Card */
.calculator-card {
  background-color: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 96px;
  transition: var(--transition);
}

.calculator-card h3 {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 8px;
}

.calculator-card .sub-heading {
  font-size: 0.9rem;
  color: var(--muted-foreground);
  margin-bottom: 28px;
}

.form-group {
  margin-bottom: 20px;
}

.form-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.form-label-row label {
  font-size: 0.9rem;
  font-weight: 600;
}

.form-label-row .input-val {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--accent);
}

.input-slider {
  width: 100%;
  height: 6px;
  background: var(--muted);
  border-radius: 5px;
  outline: none;
  -webkit-appearance: none;
}

.input-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid var(--card);
  box-shadow: var(--shadow-sm);
}

.input-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  background: var(--accent-dark);
}

.input-number-wrapper {
  display: flex;
  align-items: center;
  background: var(--muted);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  padding: 4px 12px;
  margin-top: 4px;
}

.input-prefix {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--muted-foreground);
  margin-right: 4px;
}

.input-suffix {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--muted-foreground);
  margin-left: 4px;
}

.input-number {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  padding: 8px 0;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--foreground);
  text-align: right;
  -webkit-appearance: textfield;
  -moz-appearance: textfield;
  appearance: textfield;
}

.input-number::-webkit-outer-spin-button,
.input-number::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* Calculator Results Section */
.calc-results {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px dashed var(--border);
}

.results-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.result-box {
  background: var(--muted);
  padding: 16px;
  border-radius: var(--radius-md);
  text-align: center;
  border: 1px solid var(--border);
}

.result-box .label {
  font-size: 0.75rem;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--muted-foreground);
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.result-box .value {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--foreground);
  letter-spacing: -0.5px;
}

.recommendation-banner {
  background: var(--accent-light);
  color: var(--foreground);
  border: 1px solid hsla(var(--accent-raw) / 0.15);
  padding: 20px;
  border-radius: var(--radius-md);
  text-align: center;
  transition: var(--transition);
}

.rec-title {
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 6px;
}

.rec-desc {
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.4;
}

/* Status variants for recommendation banner */
.recommendation-banner.status-go {
  background-color: hsla(142 70% 45% / 0.1);
  border-color: hsla(142 70% 45% / 0.2);
  color: hsl(142 75% 25%);
}
.dark .recommendation-banner.status-go {
  color: hsl(142 75% 65%);
}

.recommendation-banner.status-warning {
  background-color: hsla(38 92% 50% / 0.1);
  border-color: hsla(38 92% 50% / 0.2);
  color: hsl(38 85% 25%);
}
.dark .recommendation-banner.status-warning {
  color: hsl(38 90% 70%);
}

.recommendation-banner.status-stop {
  background-color: hsla(0 84% 60% / 0.1);
  border-color: hsla(0 84% 60% / 0.2);
  color: hsl(0 75% 30%);
}
.dark .recommendation-banner.status-stop {
  color: hsl(0 80% 70%);
}

/* Timeline & Alternative Options Section */
.comparison-section {
  padding: 80px 0;
  background-color: var(--muted);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.section-header {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 56px auto;
}

.section-header h2 {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 16px;
}

.section-header p {
  color: var(--muted-foreground);
  font-size: 1.05rem;
}

.comparison-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
}

.comparison-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.comparison-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: hsla(var(--accent-raw) / 0.3);
}

.comp-badge {
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 4px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.comp-badge.premium {
  background-color: var(--accent-light);
  color: var(--accent-dark);
}

.comp-badge.standard {
  background-color: hsla(220 25% 14% / 0.05);
  color: var(--foreground);
}
.dark .comp-badge.standard {
  background-color: hsla(220 25% 90% / 0.1);
}

.comparison-card h3 {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}

.comparison-card p {
  color: var(--muted-foreground);
  font-size: 0.95rem;
  margin-bottom: 24px;
  flex: 1;
}

.comp-meta {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  font-size: 0.9rem;
}

.comp-meta-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
}

.comp-meta-row:last-child {
  margin-bottom: 0;
}

.comp-meta-row span.label {
  color: var(--muted-foreground);
}

.comp-meta-row span.value {
  font-weight: 700;
}

/* FAQ / Accordion Section */
.faq-section {
  padding: 80px 0;
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background-color: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item summary {
  padding: 24px;
  font-weight: 700;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  list-style: none;
  user-select: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--accent);
  transition: var(--transition);
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-content {
  padding: 0 24px 24px 24px;
  color: var(--muted-foreground);
  font-size: 0.95rem;
}

/* CTA Footer section */
.cta-banner {
  background: linear-gradient(135deg, var(--card) 0%, var(--muted) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px;
  text-align: center;
  margin-bottom: 80px;
  position: relative;
  overflow: hidden;
}

.cta-banner h2 {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 12px;
}

.cta-banner p {
  color: var(--muted-foreground);
  max-width: 600px;
  margin: 0 auto 28px auto;
}

/* Footer & Legal Links */
footer {
  margin-top: auto;
  border-top: 1px solid var(--border);
  background-color: var(--card);
  padding: 48px 0;
  color: var(--muted-foreground);
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-left {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a:hover {
  color: var(--foreground);
  text-decoration: underline;
}

/* Modals (Terms & Privacy Dialogs) */
dialog {
  border: none;
  background: transparent;
  width: 100%;
  max-width: 650px;
  padding: 0;
  margin: auto;
  box-shadow: var(--shadow-lg);
  border-radius: var(--radius-lg);
}

dialog::backdrop {
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(8px);
  animation: fadeIn 0.3s forwards;
}

.modal-container {
  background-color: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.modal-header h3 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--foreground);
  letter-spacing: -0.5px;
}

.modal-close {
  background: transparent;
  border: none;
  font-size: 1.75rem;
  cursor: pointer;
  color: var(--muted-foreground);
  transition: var(--transition);
  line-height: 1;
}

.modal-close:hover {
  color: var(--foreground);
  transform: rotate(90deg);
}

.modal-body {
  overflow-y: auto;
  font-size: 0.95rem;
  color: var(--muted-foreground);
  padding-right: 8px;
}

.modal-body h4 {
  font-weight: 700;
  color: var(--foreground);
  margin: 20px 0 8px 0;
}

.modal-body p, .modal-body ul {
  margin-bottom: 16px;
}

.modal-body ul {
  padding-left: 20px;
}

.modal-body li {
  margin-bottom: 6px;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Custom Scrollbars for modal */
.modal-body::-webkit-scrollbar {
  width: 6px;
}

.modal-body::-webkit-scrollbar-track {
  background: var(--muted);
  border-radius: 10px;
}

.modal-body::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 10px;
}

.modal-body::-webkit-scrollbar-thumb:hover {
  background: var(--muted-foreground);
}

/* Responsive Overrides */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.25rem;
    letter-spacing: -0.8px;
  }
  
  nav {
    display: none; /* Can be simplified for mobile or use a simple menu */
  }
  
  .footer-content {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }
}