@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Sora:wght@400;600;700;800&family=Material+Symbols+Outlined:opsz,wght,FILL,GRAD@24,400,0,0&display=swap');

/* --- Design Tokens --- */
:root {
  --bg-color: #0b1326;
  --bg-lowest: #060e20;
  --surface-color: #131b2e;
  --surface-hover: #171f33;
  --surface-high: #222a3d;
  --surface-highest: #2d3449;
  
  --primary-color: #4edea3;
  --primary-glow: rgba(78, 222, 163, 0.2);
  --primary-container: #10b981;
  --secondary-color: #7bd0ff;
  --tertiary-color: #ffb2b7;
  
  --text-primary: #dae2fd;
  --text-secondary: #bbcabf;
  --outline-color: #3c4a42;
  
  --font-headline: 'Sora', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-headline);
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.2;
}

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

button, input, select, textarea {
  font-family: inherit;
}

/* --- Layout Grid --- */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 24px;
}

/* --- Header / Navigation --- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 19, 38, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--outline-color);
  transition: background var(--transition-fast);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-headline);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  text-transform: uppercase;
}

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

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 4px;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Mobile Menu Button */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 8px;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  font-family: var(--font-body);
}

.btn-primary {
  background-color: var(--primary-color);
  color: var(--bg-lowest);
  box-shadow: 0 4px 20px rgba(78, 222, 163, 0.15);
}

.btn-primary:hover {
  background-color: var(--primary-container);
  box-shadow: 0 4px 25px rgba(78, 222, 163, 0.3);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-primary);
  border: 1px solid var(--outline-color);
}

.btn-secondary:hover {
  background-color: var(--surface-hover);
  border-color: var(--text-secondary);
  transform: translateY(-1px);
}

/* --- Cards --- */
.card {
  background-color: var(--surface-color);
  border: 1px solid var(--outline-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition-normal);
}

.card:hover {
  border-color: var(--primary-color);
  box-shadow: 0 10px 30px rgba(78, 222, 163, 0.05);
  transform: translateY(-2px);
}

/* --- Badge & Tag --- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-emerald {
  background-color: rgba(78, 222, 163, 0.1);
  color: var(--primary-color);
  border: 1px solid rgba(78, 222, 163, 0.2);
}

.badge-rose {
  background-color: rgba(255, 178, 183, 0.1);
  color: var(--tertiary-color);
  border: 1px solid rgba(255, 178, 183, 0.2);
}

.badge-sky {
  background-color: rgba(123, 208, 255, 0.1);
  color: var(--secondary-color);
  border: 1px solid rgba(123, 208, 255, 0.2);
}

/* --- Hero Layout --- */
.hero {
  padding: 100px 0 80px 0;
  position: relative;
}

.hero-content {
  grid-column: span 7;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-visual {
  grid-column: span 5;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.hero-visual-glow {
  position: absolute;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
  z-index: 0;
}

/* --- Section Styling --- */
.section {
  padding: 100px 0;
  border-bottom: 1px solid var(--outline-color);
}

.section-header {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 64px auto;
}

.section-header h2 {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.section-header p {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

/* --- Interactive Calculator --- */
.calc-card {
  grid-column: span 12;
  background: linear-gradient(135deg, var(--surface-color) 0%, var(--bg-lowest) 100%);
  border: 1px solid var(--outline-color);
  border-radius: var(--radius-lg);
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.calc-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
}

.calc-slider-box {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.calc-label-row {
  display: flex;
  justify-content: space-between;
  font-weight: 600;
}

.calc-slider {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--surface-highest);
  outline: none;
}

.calc-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--primary-color);
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.calc-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.calc-results {
  background: rgba(23, 31, 51, 0.6);
  border: 1px solid var(--outline-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.calc-savings {
  font-family: var(--font-headline);
  font-size: 3rem;
  font-weight: 800;
  color: var(--primary-color);
  text-shadow: 0 0 15px var(--primary-glow);
}

/* --- Dashboard Tab Demo --- */
.demo-dashboard {
  background: var(--bg-lowest);
  border: 1px solid var(--outline-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
}

.demo-sidebar {
  grid-column: span 3;
  background: var(--surface-color);
  border-right: 1px solid var(--outline-color);
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.demo-content-panel {
  grid-column: span 9;
  padding: 32px;
}

.tab-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tab-btn.active,
.tab-btn:hover {
  background: var(--surface-hover);
  color: var(--primary-color);
}

.tab-btn span.icon {
  font-family: 'Material Symbols Outlined';
  font-size: 1.25rem;
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

/* Table Style */
.table-container {
  width: 100%;
  overflow-x: auto;
  margin-top: 16px;
}

.app-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.app-table th, .app-table td {
  padding: 16px;
  border-bottom: 1px solid var(--outline-color);
}

.app-table th {
  font-family: var(--font-headline);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  background: var(--surface-hover);
}

.app-table tr:hover td {
  background: rgba(23, 31, 51, 0.4);
}

/* --- Pricing Tiers --- */
.price-toggle-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 48px;
}

.toggle-switch {
  position: relative;
  display: inline-block;
  width: 52px;
  height: 28px;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--surface-highest);
  transition: .4s;
  border-radius: 34px;
}

.toggle-slider:before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 4px;
  bottom: 4px;
  background-color: var(--primary-color);
  transition: .4s;
  border-radius: 50%;
}

input:checked + .toggle-slider:before {
  transform: translateX(24px);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.pricing-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.pricing-card.premium {
  border-color: var(--primary-color);
  position: relative;
}

.pricing-card.premium::before {
  content: 'POPULAR';
  position: absolute;
  top: -12px;
  right: 24px;
  background: var(--primary-color);
  color: var(--bg-lowest);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-full);
}

.price-box {
  margin: 24px 0;
}

.price-value {
  font-family: var(--font-headline);
  font-size: 3rem;
  font-weight: 800;
  color: var(--text-primary);
}

.price-period {
  font-size: 1rem;
  color: var(--text-secondary);
}

.pricing-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.pricing-features li span {
  color: var(--primary-color);
  font-family: 'Material Symbols Outlined';
  font-size: 1.15rem;
}

/* --- FAQ Accordion --- */
.faq-accordion {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.faq-trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px;
  background: none;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-headline);
  font-weight: 600;
  font-size: 1.1rem;
  text-align: left;
  cursor: pointer;
}

.faq-trigger span.icon {
  font-family: 'Material Symbols Outlined';
  transition: transform var(--transition-fast);
}

.faq-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal) ease-out, padding var(--transition-normal);
  color: var(--text-secondary);
  padding: 0 24px;
}

.faq-item.active .faq-content {
  max-height: 200px;
  padding: 0 24px 24px 24px;
}

.faq-item.active .faq-trigger span.icon {
  transform: rotate(180deg);
}

/* --- Contact & Forms --- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 48px;
}

.contact-info {
  grid-column: span 5;
}

.contact-form-card {
  grid-column: span 7;
}

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  background: var(--surface-hover);
  border: 1px solid var(--outline-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 1rem;
  transition: border-color var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 10px rgba(78, 222, 163, 0.1);
}

/* --- Footer --- */
.footer {
  background-color: var(--bg-lowest);
  border-top: 1px solid var(--outline-color);
  padding: 80px 0 40px 0;
  margin-top: 100px;
}

.footer-columns {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 48px;
  margin-bottom: 64px;
}

.footer-logo-col {
  grid-column: span 1.5;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-col h4 {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col a {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.footer-col a:hover {
  color: var(--primary-color);
}

.footer-bottom {
  border-top: 1px solid var(--outline-color);
  padding-top: 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* --- Modals & Popups --- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(6, 14, 32, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background: var(--surface-color);
  border: 1px solid var(--outline-color);
  border-radius: var(--radius-lg);
  max-width: 500px;
  width: 90%;
  padding: 40px;
  position: relative;
  transform: translateY(20px);
  transition: transform var(--transition-normal);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 30px rgba(78, 222, 163, 0.05);
}

.modal-overlay.active .modal-content {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: 24px;
  right: 24px;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-family: 'Material Symbols Outlined';
  font-size: 1.5rem;
  transition: color var(--transition-fast);
}

.modal-close:hover {
  color: var(--primary-color);
}

.modal-header {
  margin-bottom: 24px;
}

.modal-header h3 {
  font-size: 1.75rem;
  margin-bottom: 8px;
}

/* --- Animations --- */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --- Responsive Layouts --- */
@media (max-width: 1024px) {
  .hero-content {
    grid-column: span 12;
    text-align: center;
    margin-bottom: 48px;
  }
  .hero-visual {
    grid-column: span 12;
  }
  .pricing-grid {
    grid-template-columns: repeat(1, minmax(0, 1fr));
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .header-actions {
    display: none; /* Hide action button on mobile */
  }
  
  .menu-toggle {
    display: block;
  }
  
  .nav-links {
    display: none; /* In production JS, this toggles as active mobile menu */
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
    background: var(--bg-color);
    flex-direction: column;
    padding: 32px 24px;
    border-bottom: 1px solid var(--outline-color);
    gap: 24px;
  }
  
  .nav-links.active {
    display: flex;
  }
  
  .grid-12 {
    grid-template-columns: repeat(1, minmax(0, 1fr));
  }
  
  .calc-row {
    grid-template-columns: repeat(1, minmax(0, 1fr));
  }
  
  .demo-sidebar {
    grid-column: span 1;
    flex-direction: row;
    overflow-x: auto;
    padding: 12px;
  }
  
  .demo-content-panel {
    grid-column: span 1;
  }
  
  .contact-info, .contact-form-card {
    grid-column: span 12;
  }
  
  .footer-columns {
    grid-template-columns: repeat(1, minmax(0, 1fr));
    gap: 32px;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}