/* Marketing landing page for the Autonomous Hotel Management System */

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
  line-height: 1.6;
}

main {
  display: block;
}

.hero {
  background: var(--gradient-hero);
  color: var(--color-text-inverse);
  padding: 1.5rem clamp(1.5rem, 4vw, 3rem) clamp(3rem, 8vw, 5rem);
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top right, rgba(255, 255, 255, 0.2), transparent 55%);
  pointer-events: none;
}

.hero-content {
  max-width: 960px;
  margin: clamp(2.5rem, 6vw, 4rem) auto 0;
  text-align: center;
  position: relative;
  z-index: 1;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-weight: 600;
  font-size: 0.8rem;
  margin-bottom: 1rem;
  opacity: 0.85;
}

.hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.5rem);
  font-weight: 700;
  margin: 0 auto 1.5rem;
  line-height: 1.15;
}

.hero-subtitle {
  font-size: clamp(1rem, 2.4vw, 1.25rem);
  margin: 0 auto clamp(1.5rem, 4vw, 2rem);
  max-width: 720px;
  color: rgba(255, 255, 255, 0.92);
}

.cta-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-bottom: clamp(2rem, 5vw, 3rem);
}

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.9rem 1.8rem;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn-primary {
  background: var(--color-btn-primary);
  color: var(--color-btn-primary-text);
  box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
  transform: translateY(-2px);
  background: var(--color-btn-primary-hover);
  box-shadow: var(--shadow-xl);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.12);
  color: var(--color-text-inverse);
  border: 1px solid rgba(255, 255, 255, 0.4);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.22);
  transform: translateY(-2px);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-top: clamp(2rem, 5vw, 3rem);
}

.metric-value {
  display: block;
  font-size: 2rem;
  font-weight: 700;
}

.metric-label {
  display: block;
  font-size: 0.95rem;
  opacity: 0.9;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
  padding: 0.5rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.brand-icon {
  font-size: 1.8rem;
}

.brand-title {
  font-weight: 600;
  font-size: 1rem;
}

.brand-subtitle {
  font-size: 0.8rem;
  opacity: 0.75;
}

.nav nav {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 2vw, 1.5rem);
}

.nav nav a {
  color: var(--color-text-inverse);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  opacity: 0.9;
}

.nav nav a:hover {
  opacity: 1;
}

.nav-cta {
  padding: 0.5rem 1.1rem;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 999px;
}

.section {
  padding: clamp(3.5rem, 8vw, 5.5rem) clamp(1.5rem, 4vw, 3rem);
}

.section.alt {
  background: var(--color-bg-primary);
}

.section-inner {
  max-width: 1120px;
  margin: 0 auto;
}

.section-heading {
  text-align: center;
  margin-bottom: clamp(2.5rem, 6vw, 3.5rem);
}

.section-heading h2 {
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  margin-bottom: 0.75rem;
  font-weight: 700;
}

.section-heading p {
  font-size: clamp(1rem, 2.3vw, 1.2rem);
  color: var(--color-text-secondary);
  margin: 0 auto;
  max-width: 760px;
}

.pain-grid,
.feature-grid,
.results-grid,
.integration-grid,
.proof-grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2rem);
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.pain-grid article,
.feature-grid article,
.results-grid article,
.integration-grid article,
.proof-grid article {
  background: var(--color-bg-primary);
  border-radius: 18px;
  padding: clamp(1.5rem, 3vw, 2rem);
  box-shadow: var(--shadow-md);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.section.alt .pain-grid article,
.section.alt .feature-grid article,
.section.alt .results-grid article,
.section.alt .integration-grid article,
.section.alt .proof-grid article {
  background: var(--color-bg-secondary);
}

.pain-grid article:hover,
.feature-grid article:hover,
.results-grid article:hover,
.integration-grid article:hover,
.proof-grid article:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.feature-grid ul {
  margin-top: 1rem;
  padding-left: 1.2rem;
  color: var(--color-text-secondary);
}

.feature-grid li {
  margin-bottom: 0.4rem;
}

.roi-callout {
  margin-top: clamp(2rem, 5vw, 3rem);
  padding: clamp(1.8rem, 4vw, 2.4rem);
  border-radius: 18px;
  background: var(--gradient-secondary);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-lg);
  text-align: center;
}

.roi-callout code {
  background: rgba(0, 0, 0, 0.25);
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  color: var(--color-text-inverse);
}

.roi-table-wrapper {
  margin-top: clamp(2rem, 5vw, 3rem);
  background: var(--color-bg-primary);
  border-radius: 18px;
  box-shadow: var(--shadow-md);
  overflow-x: auto;
  padding: clamp(1.5rem, 4vw, 2rem);
}

.roi-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 420px;
}

.roi-table th,
.roi-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border-secondary);
}

.roi-table th {
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
}

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

.roi-note {
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.calculator {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) minmax(260px, 1fr);
  gap: clamp(1.8rem, 4vw, 2.6rem);
  align-items: start;
}

.calculator-form {
  background: var(--color-bg-primary);
  border-radius: 18px;
  padding: clamp(1.8rem, 4vw, 2.3rem);
  box-shadow: var(--shadow-md);
  display: grid;
  gap: 1.2rem;
}

.calculator-control {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.calculator-control label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.control-input {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.control-input input[type="range"] {
  flex: 1 1 auto;
  accent-color: var(--color-primary);
}

.control-value {
  min-width: 64px;
  text-align: right;
  font-weight: 600;
  color: var(--color-primary);
}

.calculator-results {
  display: grid;
  gap: 1.2rem;
}

.results-card {
  background: var(--color-bg-primary);
  border-radius: 18px;
  padding: clamp(1.8rem, 4vw, 2.2rem);
  box-shadow: var(--shadow-md);
  display: grid;
  gap: 0.9rem;
}

.results-card h3 {
  margin: 0;
  font-size: 1.2rem;
}

.result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1rem;
  color: var(--color-text-secondary);
}

.result-row strong {
  font-size: 1.15rem;
  color: var(--color-text-primary);
}

.result-row.lift {
  border-top: 1px solid var(--color-border-secondary);
  padding-top: 0.8rem;
  margin-top: 0.4rem;
  color: var(--color-success);
}

.result-row.lift strong {
  color: var(--color-success);
}

.calculator-note {
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.case-study .case-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: clamp(1.8rem, 4vw, 2.5rem);
  align-items: center;
}

.case-stats {
  display: grid;
  gap: 1rem;
}

.case-stats > div {
  background: rgba(37, 99, 235, 0.12);
  padding: 1.4rem;
  border-radius: 16px;
  text-align: center;
}

.case-study.alt .case-stats > div {
  background: rgba(37, 99, 235, 0.15);
}

.case-story blockquote {
  font-size: 1.05rem;
  line-height: 1.5;
  margin: 0 0 1rem;
  font-style: italic;
  color: var(--color-text-primary);
}

.case-story cite {
  display: block;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--color-text-secondary);
}

.case-story ul {
  padding-left: 1.2rem;
  color: var(--color-text-secondary);
}

.link {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
}

.link:hover {
  text-decoration: underline;
}

.contact {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: clamp(1.8rem, 4vw, 2.5rem);
  align-items: stretch;
}

.contact-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.contact-card {
  background: var(--gradient-primary);
  color: var(--color-text-inverse);
  border-radius: 18px;
  padding: clamp(1.8rem, 4vw, 2.3rem);
  box-shadow: var(--shadow-lg);
}

.contact-card h3 {
  margin-top: 0;
  margin-bottom: 1rem;
}

.contact-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.contact-card li + li {
  margin-top: 0.75rem;
}

.footer {
  background: #0f172a;
  color: rgba(255, 255, 255, 0.88);
  padding: clamp(2.5rem, 6vw, 3.5rem) clamp(1.5rem, 4vw, 3rem);
}

.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: grid;
  gap: clamp(2rem, 4vw, 3rem);
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1.5rem;
}

.footer-links h4 {
  margin-bottom: 0.75rem;
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.85);
}

.footer-links a {
  display: block;
  text-decoration: none;
  color: rgba(255, 255, 255, 0.78);
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
}

.footer-links a:hover {
  color: #fff;
}

.footer-note {
  margin-top: 1rem;
  color: rgba(255, 255, 255, 0.72);
}

.footer-bottom {
  max-width: 1120px;
  margin: 2rem auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.9rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 1.5rem;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: clamp(1.5rem, 4vw, 2rem);
}

.timeline-step {
  background: var(--color-bg-primary);
  border-radius: 18px;
  padding: clamp(1.5rem, 3.2vw, 2rem);
  box-shadow: var(--shadow-md);
  position: relative;
}

.section .timeline-step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.timeline-week {
  display: inline-block;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
}

.timeline-step h3 {
  margin-top: 0;
  margin-bottom: 0.75rem;
  font-size: 1.2rem;
}

.implementation-support {
  margin-top: clamp(2.5rem, 6vw, 3.2rem);
  background: var(--color-bg-primary);
  border-radius: 18px;
  padding: clamp(1.8rem, 4vw, 2.3rem);
  box-shadow: var(--shadow-md);
}

.implementation-support h3 {
  margin-top: 0;
  margin-bottom: 1rem;
}

.implementation-support ul {
  padding-left: 1.2rem;
  color: var(--color-text-secondary);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: clamp(1.5rem, 4vw, 2rem);
}

.pricing-card {
  background: var(--color-bg-primary);
  border-radius: 20px;
  padding: clamp(1.8rem, 4vw, 2.4rem);
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.pricing-card h3 {
  font-size: 2.2rem;
  margin: 0;
}

.pricing-card h3 span {
  font-size: 1rem;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.pricing-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.5rem;
  color: var(--color-text-secondary);
}

.pricing-card ul li::before {
  content: "✔";
  margin-right: 0.5rem;
  color: var(--color-secondary);
  font-weight: 700;
}

.pricing-card.secondary {
  background: var(--gradient-secondary);
  color: var(--color-text-inverse);
}

.pricing-card.secondary p,
.pricing-card.secondary ul {
  color: rgba(255, 255, 255, 0.9);
}

.pricing-card.secondary ul li::before {
  color: rgba(255, 255, 255, 0.9);
}

.pricing-card .btn-secondary {
  align-self: flex-start;
  padding: 0.7rem 1.4rem;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  color: var(--color-text-inverse);
  text-decoration: none;
  font-weight: 600;
  transition: background 0.2s ease, transform 0.2s ease;
}

.pricing-card .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.22);
  transform: translateY(-2px);
}

.pricing-note {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: clamp(1.5rem, 4vw, 2rem);
}

.trust-grid article {
  background: var(--color-bg-secondary);
  border-radius: 18px;
  padding: clamp(1.5rem, 3vw, 2rem);
  box-shadow: var(--shadow-md);
}

.trust-grid ul {
  padding-left: 1.2rem;
  color: var(--color-text-secondary);
}

.quote-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: clamp(1.5rem, 4vw, 2rem);
}

.quote-card {
  background: var(--color-bg-primary);
  border-radius: 18px;
  padding: clamp(1.8rem, 4vw, 2.3rem);
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.quote-card blockquote {
  font-style: italic;
  margin: 0;
  color: var(--color-text-primary);
}

.quote-card figcaption {
  font-weight: 600;
  color: var(--color-text-secondary);
}

.faq {
  display: grid;
  gap: 1rem;
}

.faq details {
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  border-radius: 16px;
  padding: 1.2rem 1.4rem;
  box-shadow: var(--shadow-md);
}

.faq summary {
  font-weight: 600;
  cursor: pointer;
}

.faq p {
  margin-top: 0.75rem;
  color: var(--color-text-secondary);
}

.faq details[open] summary {
  color: var(--color-primary);
}

@media (max-width: 960px) {
  .nav {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav nav {
    flex-wrap: wrap;
    justify-content: flex-start;
  }

  .brand-title {
    font-size: 0.95rem;
  }
}

@media (max-width: 640px) {
  .hero {
    padding-top: 1rem;
  }

  .calculator {
    grid-template-columns: 1fr;
  }

  .hero-metrics {
    grid-template-columns: 1fr;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .pricing-card h3 {
    font-size: 2rem;
  }

  .timeline {
    grid-template-columns: 1fr;
  }
}