@import url("https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,500;0,600;1,500;1,600&family=Inter:wght@400;500;600&family=Source+Serif+4:ital,wght@0,400;0,600;1,400;1,600&display=swap");

:root {
  --bg: #f3f8f5;
  --fg: #0b0b0b;
  --muted: #4f5b56;
  --accent: #2a6b57;
  --border: #d7e1db;
  --panel: #ffffff;
  --soft: #eef4f0;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "Source Serif 4", "Georgia", "Times New Roman", serif;
  font-style: normal;
  font-variant-numeric: lining-nums;
  min-height: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 64px 20px 80px;
  gap: 56px;
}

.page-landing {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.chat-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
}

.chat-header {
  padding: 20px 32px;
  border-bottom: 1px solid var(--border);
}

.chat-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  gap: 32px;
}

.chat-welcome {
  text-align: center;
  max-width: 600px;
}

.chat-title {
  font-family: "Cormorant Garamond", "Georgia", "Times New Roman", serif;
  font-style: italic;
  font-size: clamp(32px, 5vw, 48px);
  color: var(--accent);
  margin: 0 0 16px;
  line-height: 1.1;
}

.chat-subtitle {
  font-size: 18px;
  color: var(--muted);
  margin: 0;
}

.chat-response {
  width: min(720px, 92vw);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.response-text {
  font-size: 18px;
  line-height: 1.8;
  color: var(--fg);
}

.response-text p {
  margin: 0 0 1em 0;
}

.response-text p:last-child {
  margin-bottom: 0;
}

.response-text h2,
.response-text h3,
.response-text h4 {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-weight: 600;
  margin: 1.5em 0 0.5em 0;
  color: var(--fg);
}

.response-text h2 { font-size: 1.5em; }
.response-text h3 { font-size: 1.3em; }
.response-text h4 { font-size: 1.1em; }

.response-text h2:first-child,
.response-text h3:first-child,
.response-text h4:first-child {
  margin-top: 0;
}

.response-text ul,
.response-text ol {
  margin: 0.5em 0 1em 0;
  padding-left: 1.5em;
}

.response-text li {
  margin-bottom: 0.4em;
}

.response-text strong {
  font-weight: 600;
}

.response-text em {
  font-style: italic;
}

.typing-cursor {
  display: inline-block;
  width: 8px;
  height: 1.2em;
  background: var(--accent);
  margin-left: 2px;
  vertical-align: text-bottom;
  animation: blink 0.8s ease-in-out infinite;
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

.chat-details {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.detail-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.detail-label {
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.detail-value {
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  font-size: 16px;
  font-weight: 500;
}

.detail-value.energy-saved {
  color: var(--accent);
}

.chat-footer {
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  border-top: 1px solid var(--border);
  background: var(--panel);
}

.chat-input-wrap {
  width: min(720px, 92vw);
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--soft);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 8px 8px 8px 20px;
  transition: border-color 150ms ease;
}

.chat-input-wrap:focus-within {
  border-color: var(--accent);
}

.chat-input {
  flex: 1;
  border: none;
  background: transparent;
  font-size: 16px;
  font-family: inherit;
  padding: 8px 0;
  outline: none;
}

.chat-input::placeholder {
  color: var(--muted);
}

.chat-send {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: none;
  background: var(--fg);
  color: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 150ms ease, transform 150ms ease;
}

.chat-send:hover {
  background: var(--accent);
  transform: scale(1.05);
}

.chat-footer-note {
  font-size: 13px;
  color: var(--muted);
  margin: 0;
}

.container {
  width: min(980px, 92vw);
  display: flex;
  flex-direction: column;
  gap: 22px;
  padding: 64px 20px 80px;
}

.hero {
  height: 100vh;
  min-height: 520px;
  width: min(980px, 92vw);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.hero-message {
  font-family: "Cormorant Garamond", "Georgia", "Times New Roman", serif;
  font-style: italic;
  font-size: clamp(44px, 6.6vw, 80px);
  line-height: 1.02;
  margin: 0;
  color: var(--accent);
}

.hero.reveal-slide .hero-message {
  opacity: 0;
  transform: translateY(120px) scale(0.9);
  transition: opacity 1200ms cubic-bezier(0.16, 1, 0.3, 1),
              transform 1400ms cubic-bezier(0.16, 1, 0.3, 1);
}

.hero.reveal-slide.in-view .hero-message {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.slide {
  min-height: 100vh;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px 20px;
}

.slide-content {
  width: min(1100px, 92vw);
  text-align: center;
}

.slide-headline {
  font-family: "Cormorant Garamond", "Georgia", "Times New Roman", serif;
  font-style: italic;
  font-size: clamp(42px, 6vw, 76px);
  line-height: 1.05;
  margin: 0 0 24px;
  color: var(--accent);
}

.slide-sub {
  font-family: "Source Serif 4", "Georgia", "Times New Roman", serif;
  font-size: clamp(22px, 2.8vw, 32px);
  color: var(--muted);
  margin: 0;
  line-height: 1.4;
}

.reveal-slide {
  opacity: 0;
}

.reveal-slide .slide-headline {
  opacity: 0;
  transform: translateY(120px) scale(0.9);
  transition: opacity 1200ms cubic-bezier(0.16, 1, 0.3, 1),
              transform 1400ms cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-slide .slide-sub {
  opacity: 0;
  transform: translateY(80px);
  transition: opacity 1200ms cubic-bezier(0.16, 1, 0.3, 1) 400ms,
              transform 1400ms cubic-bezier(0.16, 1, 0.3, 1) 400ms;
}

.reveal-slide.in-view {
  opacity: 1;
}

.reveal-slide.in-view .slide-headline {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.reveal-slide.in-view .slide-sub {
  opacity: 1;
  transform: translateY(0);
}

.intro-content.reveal-slide {
  opacity: 0;
  transform: translateY(100px) scale(0.95);
  transition: opacity 1400ms cubic-bezier(0.16, 1, 0.3, 1),
              transform 1600ms cubic-bezier(0.16, 1, 0.3, 1);
}

.intro-content.reveal-slide.in-view {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.intro-section {
  min-height: 100vh;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 20px;
  background: var(--panel);
  border-top: 1px solid var(--border);
}

.intro-content {
  width: min(900px, 92vw);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}

.intro-logo {
  font-family: "Cormorant Garamond", "Georgia", "Times New Roman", serif;
  font-style: italic;
  font-size: 36px;
  letter-spacing: 0.5px;
  color: var(--accent);
}

.intro-headline {
  font-family: "Cormorant Garamond", "Georgia", "Times New Roman", serif;
  font-style: italic;
  font-size: clamp(36px, 5vw, 60px);
  line-height: 1.1;
  margin: 0;
  color: var(--accent);
}

.intro-copy {
  font-size: clamp(18px, 2.2vw, 24px);
  color: var(--muted);
  margin: 0;
  max-width: 700px;
  line-height: 1.5;
}

.cta-row.intro-cta {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  text-align: center;
}

.button-large {
  padding: 20px 40px;
  font-size: 22px;
}

.logo {
  font-size: 28px;
  letter-spacing: 0.5px;
  font-family: "Cormorant Garamond", "Georgia", "Times New Roman", serif;
  font-style: italic;
  color: var(--accent);
}

.tagline {
  color: var(--muted);
  font-size: 16px;
}

.accent {
  color: var(--accent);
  font-style: italic;
}

.hero-title {
  font-size: 48px;
  line-height: 1.1;
  margin: 0;
  font-family: "Cormorant Garamond", "Georgia", "Times New Roman", serif;
  font-style: italic;
  color: var(--accent);
}

.hero-copy {
  font-size: 20px;
  color: var(--muted);
  margin: 0;
}

.reveal {
  opacity: 0;
  transform: translateY(80px);
  transition: opacity 1000ms cubic-bezier(0.16, 1, 0.3, 1), 
              transform 1200ms cubic-bezier(0.16, 1, 0.3, 1);
  transition-delay: var(--delay, 0ms);
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

.float {
  animation: float 4.5s ease-in-out infinite;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-6px);
  }
}

.principles {
  display: grid;
  gap: 10px;
  padding: 18px 0 0;
  border-top: 1px solid var(--border);
}

.principle {
  font-size: 16px;
  color: var(--fg);
}

.cta-row {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.button {
  border: 1px solid var(--fg);
  background: var(--fg);
  color: var(--bg);
  padding: 16px 32px;
  border-radius: 999px;
  font-size: 18px;
  font-family: "Cormorant Garamond", "Georgia", "Times New Roman", serif;
  font-style: italic;
  transition: all 180ms ease;
}

.button:hover {
  background: var(--bg);
  color: var(--fg);
  transform: translateY(-2px);
}

.link {
  font-size: 15px;
  color: var(--muted);
  border-bottom: 1px solid transparent;
  transition: border-color 150ms ease;
}

.link:hover {
  border-color: var(--muted);
}

.panel {
  border: 1px solid var(--border);
  padding: 24px;
  border-radius: 20px;
  display: grid;
  gap: 18px;
  background: var(--panel);
  box-shadow: 0 10px 30px rgba(15, 32, 24, 0.06);
}

.input {
  width: 100%;
  border: 1px solid var(--border);
  padding: 14px 16px;
  border-radius: 16px;
  font-size: 16px;
  font-family: inherit;
  font-style: normal;
  background: var(--soft);
}

.input:focus {
  outline: 1px solid var(--accent);
}

.response {
  min-height: 140px;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
  font-size: 16px;
  color: var(--fg);
  background: var(--soft);
}

.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.toggle {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 14px;
  background: transparent;
  cursor: pointer;
  font-family: inherit;
  font-style: normal;
  transition: border-color 150ms ease;
}

.toggle:hover {
  border-color: var(--accent);
}

.details {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
}

.details strong {
  color: var(--fg);
  font-weight: 600;
}

.details .energy-saved {
  color: var(--accent);
}

.footer-note {
  font-size: 13px;
  color: var(--muted);
  text-align: center;
  margin-top: 14px;
}

.section {
  display: grid;
  gap: 20px;
  padding: 36px 0;
  border-top: 1px solid var(--border);
}

.section-large {
  gap: 24px;
  padding: 52px 0;
}

.section-title {
  font-size: 34px;
  margin: 0;
  font-family: "Cormorant Garamond", "Georgia", "Times New Roman", serif;
  font-style: italic;
  color: var(--accent);
}

.section-copy {
  margin: 0;
  color: var(--muted);
  font-size: 19px;
}

.info-grid {
  display: grid;
  gap: 20px;
}

.info-card {
  border-top: 1px solid var(--border);
  padding: 20px 0 0;
  background: transparent;
  display: grid;
  gap: 10px;
}

.info-title {
  font-family: "Cormorant Garamond", "Georgia", "Times New Roman", serif;
  font-style: italic;
  font-size: 22px;
}

.info-copy {
  color: var(--muted);
  font-size: 17px;
  margin: 0;
}

.stat-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

.stat-card {
  border-top: 1px solid var(--border);
  padding: 18px 0 0;
  background: transparent;
  display: grid;
  gap: 8px;
}

.stat-value {
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  font-style: normal;
  font-variant-numeric: lining-nums tabular-nums;
  font-size: 36px;
}

.stat-label {
  color: var(--muted);
  font-size: 16px;
}

.steps {
  display: grid;
  gap: 16px;
}

.step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: start;
  padding: 16px 0;
  border-top: 1px solid var(--border);
}

.step-number {
  font-family: "Cormorant Garamond", "Georgia", "Times New Roman", serif;
  font-style: italic;
  font-size: 20px;
  color: var(--accent);
}

.tiers {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 22px;
}

.tier-card {
  border-left: 2px solid var(--accent);
  padding: 8px 0 8px 16px;
  background: transparent;
  display: grid;
  gap: 10px;
}

.tier-title {
  font-family: "Cormorant Garamond", "Georgia", "Times New Roman", serif;
  font-style: italic;
  font-size: 22px;
}

.tier-meta {
  font-size: 15px;
  color: var(--muted);
}

.cta-banner {
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 26px 24px;
  background: var(--panel);
  display: grid;
  gap: 16px;
  align-items: center;
  box-shadow: 0 14px 36px rgba(15, 32, 24, 0.08);
}

.cta-banner .hero-title {
  font-size: 32px;
}

.cta-banner .hero-copy {
  font-size: 16px;
}

.source-links {
  display: grid;
  gap: 6px;
  font-size: 14px;
  color: var(--muted);
}

.source-links a {
  color: var(--accent);
  border-bottom: 1px solid transparent;
  transition: border-color 150ms ease;
}

.source-links a:hover {
  border-color: var(--accent);
}

@media (prefers-reduced-motion: reduce) {
  .float {
    animation: none;
  }
  .reveal,
  .reveal-slide,
  .reveal-slide .slide-headline,
  .reveal-slide .slide-sub,
  .intro-content.reveal-slide {
    transition-duration: 0.01ms !important;
    transform: none !important;
    opacity: 1 !important;
  }
}

/* Mobile animation adjustments */
@media (max-width: 768px) {
  .hero {
    height: auto;
    min-height: 60vh;
    padding: 80px 20px;
  }
  
  .slide {
    min-height: auto;
    padding: 60px 20px;
  }
  
  .reveal-slide .slide-headline,
  .hero.reveal-slide .hero-message {
    transform: translateY(80px) scale(0.95);
  }
  
  .reveal-slide .slide-sub {
    transform: translateY(50px);
  }
  
  .intro-content.reveal-slide {
    transform: translateY(60px) scale(0.98);
  }
  
  .reveal {
    transform: translateY(50px);
  }
}

@media (max-width: 640px) {
  .hero-title {
    font-size: 34px;
  }
}