/* Travel With Purpose — book landing page */

:root {
  --cream: #f4efe6;
  --cream-dark: #e8dfd0;
  --green: #1e4d35;
  --green-light: #2d6b4a;
  --blue: #1a6b8a;
  --orange: #c45c26;
  --text: #1a2e24;
  --text-muted: #4a5f55;
  --white: #ffffff;
  --shadow: 0 8px 32px rgba(30, 77, 53, 0.1);
  --radius: 12px;
  --font-serif: "Lora", Georgia, serif;
  --font-sans: "Source Sans 3", -apple-system, BlinkMacSystemFont, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--cream);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

h1,
h2,
h3 {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.2;
  color: var(--green);
}

h1 {
  font-size: clamp(2.4rem, 5.5vw, 3.5rem);
  margin: 0 0 0.5rem;
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2rem);
  margin: 0 0 1rem;
}

h3 {
  font-size: 1.15rem;
  margin: 0 0 0.5rem;
}

p {
  margin: 0 0 1rem;
}

a {
  color: var(--blue);
}

.container {
  width: min(1100px, 92%);
  margin: 0 auto;
}

/* ── Navigation ── */

.site-header {
  position: relative;
}

.top-bar {
  background: var(--white);
  border-bottom: 1px solid var(--cream-dark);
  box-shadow: 0 1px 10px rgba(30, 77, 53, 0.08);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.85rem 0;
}

.nav-brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.nav-logo {
  height: 42px;
  width: auto;
  display: block;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--green);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
}

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

/* ── Hero ── */

.hero {
  position: relative;
  min-height: 82vh;
  display: flex;
  align-items: center;
  padding: 3.5rem 0 4rem;
  background: url("./images/background.webp") center / cover no-repeat;
  background-color: var(--green);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to left, rgba(0, 0, 0, 0.85) 0%, rgba(0, 0, 0, 0.6) 20%, rgba(0, 0, 0, 0.25) 45%, transparent 70%),
    linear-gradient(to right, rgba(0, 0, 0, 0.55) 0%, rgba(0, 0, 0, 0.2) 35%, transparent 60%);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.hero-copy {
  color: var(--white);
}

.hero-copy h1 {
  color: var(--white);
}

.eyebrow {
  margin: 0 0 0.75rem;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  opacity: 0.9;
}

.hero-subtitle {
  font-family: var(--font-serif);
  font-size: clamp(1.2rem, 2.5vw, 1.55rem);
  font-style: italic;
  margin: 0 0 1rem;
  opacity: 0.95;
}

.hero-lead {
  font-size: 1.05rem;
  max-width: 480px;
  opacity: 0.92;
  margin-bottom: 1.25rem;
}

.price {
  font-size: 1.1rem;
  margin: 0 0 1.25rem;
}

.price strong {
  font-size: 1.4rem;
}

.hero-book {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.hero-book-cta {
  margin-top: 1.25rem;
  text-align: center;
  color: var(--white);
}

.hero-book-cta .price {
  margin-bottom: 0.85rem;
}

.book-cover {
  max-width: 280px;
  width: 100%;
}

/* ── Amazon button ── */

.amazon-btn {
  display: inline-block;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

.amazon-btn:hover {
  transform: translateY(-2px);
  opacity: 0.92;
}

.amazon-btn img {
  height: 52px;
  width: auto;
}

.amazon-btn--sm img {
  height: 44px;
}

/* ── Sections ── */

.section {
  padding: 4.5rem 0;
}

.section-title {
  text-align: center;
  margin-bottom: 2.5rem;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.about {
  background: var(--white);
}

.about .lead {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-style: italic;
  color: var(--green);
}

.about-books {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

.book-thumb {
  border-radius: 4px;
  box-shadow: var(--shadow);
}

/* ── Cards & grid ── */

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow);
}

.card-icon {
  display: block;
  font-size: 1.5rem;
  color: var(--orange);
  margin-bottom: 0.5rem;
}

.highlights {
  background: var(--cream);
}

/* ── CTA band ── */

.cta-band {
  background: var(--green);
  color: var(--white);
  padding: 3rem 0;
}

.cta-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
}

.cta-band h2 {
  color: var(--white);
  margin-bottom: 0.25rem;
}

.cta-band p {
  margin: 0;
  opacity: 0.9;
}

/* ── Quotes ── */

.quotes {
  background: var(--white);
}

.quotes-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.quote-card {
  margin: 0;
  padding: 1.5rem;
  background: var(--cream);
  border-radius: var(--radius);
  border-left: 4px solid var(--orange);
}

.quote-card--featured {
  grid-column: span 2;
  background: linear-gradient(135deg, var(--green) 0%, var(--blue) 100%);
  color: var(--white);
  border-left: none;
  text-align: center;
  padding: 2rem;
}

.quote-card--featured p {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-style: italic;
}

.quote-card p {
  font-family: var(--font-serif);
  font-style: italic;
  margin: 0 0 0.75rem;
}

.quote-card cite {
  font-size: 0.88rem;
  font-style: normal;
  color: var(--text-muted);
}

.quote-card--featured cite {
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.95rem;
}

/* ── Worksheets ── */

.worksheets {
  background: var(--cream-dark);
}

.worksheets-visual {
  text-align: center;
  color: var(--text-muted);
  padding: 2.5rem;
  border: 2px dashed #c5b9a8;
  background: var(--cream);
  box-shadow: none;
}

.worksheets-visual p {
  margin: 0;
}

.worksheets-featured h3 {
  margin: 0 0 1rem;
  font-size: 1rem;
  color: var(--green);
}

.worksheets-featured .worksheet-list li:first-child {
  padding-top: 0;
}

/* ── Author ── */

.author {
  background: var(--white);
}

.author-photo {
  width: 100%;
  max-width: 560px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.author-name {
  font-family: var(--font-serif);
  color: var(--blue);
  font-size: 1.3rem;
  margin-bottom: 1rem;
}

.author-photo-wrap {
  display: flex;
  justify-content: center;
}

/* ── Contact form ── */

.contact {
  background: var(--cream);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3rem;
  align-items: start;
}

.contact-form label {
  display: block;
  margin-bottom: 1rem;
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--green);
}

.contact-form input,
.contact-form textarea {
  display: block;
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.7rem 0.9rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  border: 1.5px solid var(--cream-dark);
  border-radius: 8px;
  background: var(--cream);
  color: var(--text);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(26, 107, 138, 0.15);
}

.form-note {
  margin: 0.75rem 0 0;
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ── Buttons ── */

.btn {
  display: inline-block;
  padding: 0.7rem 1.4rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--white);
  background: var(--green);
  border: none;
  border-radius: 8px;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s ease;
}

.btn:hover {
  background: var(--green-light);
}

.btn-outline {
  background: transparent;
  color: var(--green);
  border: 2px solid var(--green);
}

.btn-outline:hover {
  background: var(--green);
  color: var(--white);
}

.btn-with-icon {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}

.linkedin-icon {
  flex-shrink: 0;
  display: block;
  object-fit: contain;
}

/* ── Footer ── */

.footer {
  background: var(--green);
  color: rgba(255, 255, 255, 0.85);
  padding: 1.75rem 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer p {
  margin: 0;
  font-size: 0.9rem;
}

.footer a {
  color: var(--white);
  text-decoration: none;
  font-size: 0.9rem;
}

.footer-linkedin {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.footer a:hover {
  text-decoration: underline;
}

/* ── Responsive ── */

@media (max-width: 900px) {
  .hero-grid,
  .split,
  .contact-grid,
  .grid-3,
  .quotes-grid {
    grid-template-columns: 1fr;
  }

  .quote-card--featured {
    grid-column: span 1;
  }

  .cta-inner {
    flex-direction: column;
    text-align: center;
  }

  .nav-links {
    display: none;
  }

  .hero {
    min-height: auto;
    padding: 2.5rem 0 3rem;
  }

  .hero-book {
    order: -1;
    margin-bottom: 0.5rem;
  }

  .book-cover {
    max-width: 300px;
  }

  .about-books {
    flex-wrap: wrap;
  }
}

/* ── Worksheets sub-page (shared) ── */

.hero-compact {
  min-height: auto;
  padding: 2.5rem 0 3rem;
}

.hero-compact .hero-grid {
  grid-template-columns: 1fr;
  text-align: center;
}

.hero-compact .hero-copy {
  max-width: 600px;
  margin: 0 auto;
}

.intro {
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.worksheet-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.worksheet-list:empty {
  display: none;
}

.worksheet-list:not(:empty) + .worksheets-placeholder {
  display: none;
}

.worksheet-list li {
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--cream-dark);
}

.worksheet-list li:last-child {
  border-bottom: none;
}

.worksheet-list a {
  font-weight: 600;
  color: var(--green);
  text-decoration: none;
}

.worksheet-list a:hover {
  text-decoration: underline;
}

.worksheet-desc {
  display: block;
  margin-top: 0.2rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.worksheets-placeholder {
  border: 2px dashed #c5b9a8;
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
  background: var(--cream);
}

.placeholder-label {
  margin: 0;
  font-weight: 600;
  color: var(--green);
}

.placeholder-hint {
  margin: 0.35rem 0 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* ── Animations ── */

@keyframes heroFadeUp {
  from {
    opacity: 0;
    transform: translateY(22px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes floatBook {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

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

.top-bar {
  animation: fadeIn 0.5s ease;
}

.hero-in {
  opacity: 0;
  animation: heroFadeUp 0.75s ease forwards;
}

.hero-in--1 {
  animation-delay: 0.12s;
}

.hero-in--2 {
  animation-delay: 0.24s;
}

.hero-in--3 {
  animation-delay: 0.36s;
}

.hero-in--4 {
  animation-delay: 0.48s;
}

.book-cover {
  animation: floatBook 5s ease-in-out 1.2s infinite;
}

.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition:
    opacity 0.65s ease,
    transform 0.65s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 {
  transition-delay: 0.1s;
}

.reveal-delay-2 {
  transition-delay: 0.2s;
}

.reveal-delay-3 {
  transition-delay: 0.3s;
}

.reveal-delay-4 {
  transition-delay: 0.4s;
}

.card {
  transition:
    transform 0.25s ease,
    box-shadow 0.25s ease;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 14px 40px rgba(30, 77, 53, 0.14);
}

.quote-card {
  transition:
    transform 0.25s ease,
    box-shadow 0.25s ease;
}

.quote-card:not(.quote-card--featured):hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.author-photo {
  transition: transform 0.35s ease;
}

.author-photo-wrap:hover .author-photo {
  transform: scale(1.02);
}

.nav-links a {
  position: relative;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  background: var(--blue);
  transition: width 0.25s ease;
}

.nav-links a:hover::after {
  width: 100%;
}

.cta-band {
  transition: background 0.3s ease;
}

@media (prefers-reduced-motion: reduce) {
  .hero-in,
  .top-bar,
  .book-cover {
    animation: none;
    opacity: 1;
    transform: none;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .card:hover,
  .quote-card:hover,
  .author-photo-wrap:hover .author-photo {
    transform: none;
  }
}

/* ── Carbon calculator worksheet ── */

.calculator-section {
  padding-top: 2rem;
}

.calculator-intro {
  max-width: 720px;
  margin-bottom: 2.25rem;
}

.calculator-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.85fr);
  gap: 2rem;
  align-items: start;
}

.calculator-form {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.calc-section {
  margin: 0;
  padding: 1.75rem 2rem 2rem;
  border: 1px solid rgba(30, 77, 53, 0.08);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
}

.calc-section-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--green);
  margin: 0 0 1.5rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--cream-dark);
  line-height: 1.3;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem 2rem;
}

.calc-field {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  min-width: 0;
}

.calc-field--wide {
  grid-column: 1 / -1;
  margin-top: 0.25rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--cream-dark);
}

.calc-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--green);
  line-height: 1.4;
}

.calc-unit {
  font-weight: 500;
  color: var(--text-muted);
}

.calc-note {
  display: block;
  margin-top: 0.15rem;
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--text-muted);
  line-height: 1.35;
}

.calculator-form input,
.calculator-form select,
.offset-planner input[type="number"] {
  width: 100%;
  height: 2.85rem;
  padding: 0 0.95rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.4;
  border: 1.5px solid #d4cfc4;
  border-radius: 8px;
  background: var(--white);
  color: var(--text);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.calculator-form select {
  appearance: none;
  padding-right: 2.5rem;
  background-color: var(--white);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%234a5f55' d='M1.4.6 6 5.2 10.6.6 12 2l-6 6-6-6z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.95rem center;
  cursor: pointer;
}

.calculator-form input[type="number"] {
  -moz-appearance: textfield;
}

.calculator-form input[type="number"]::-webkit-outer-spin-button,
.calculator-form input[type="number"]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.calculator-form input:focus,
.calculator-form select:focus,
.offset-planner input[type="number"]:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(26, 107, 138, 0.15);
}

.offset-planner {
  position: sticky;
  top: 1rem;
}

.offset-planner h2 {
  margin-bottom: 0.25rem;
}

.offset-intro {
  margin: 0 0 1.25rem;
  font-size: 0.92rem;
  color: var(--text-muted);
}

.result-list {
  margin: 0;
  padding: 0;
}

.result-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--cream-dark);
}

.result-row:last-of-type {
  border-bottom: none;
}

.result-row dt {
  margin: 0;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
}

.result-row dd {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  color: var(--green);
  text-align: right;
  white-space: nowrap;
}

.result-row--highlight {
  background: var(--cream);
  margin: 0 -1.75rem;
  padding: 0.85rem 1.75rem;
  border-bottom: none;
}

.result-row--highlight + .result-row {
  border-top: 1px solid var(--cream-dark);
}

.result-row--input dd {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.result-row--input input {
  width: 4.5rem;
  text-align: right;
  font-weight: 600;
}

.result-unit {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-muted);
}

.providers-block {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--cream-dark);
}

.providers-block h3 {
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
}

.provider-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.provider-item {
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--cream-dark);
}

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

.provider-item a {
  font-weight: 600;
  text-decoration: none;
}

.provider-item a:hover {
  text-decoration: underline;
}

.provider-note {
  display: block;
  margin-top: 0.15rem;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.calculator-actions {
  margin-top: 2rem;
}

@media (max-width: 900px) {
  .calculator-layout {
    grid-template-columns: 1fr;
  }

  .offset-planner {
    position: static;
  }
}

@media (max-width: 600px) {
  .field-grid {
    grid-template-columns: 1fr;
  }

  .calc-field--wide {
    grid-column: auto;
  }

  .result-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.35rem;
  }

  .result-row dd {
    text-align: left;
  }

  .result-row--highlight {
    margin: 0 -1.35rem;
    padding: 0.85rem 1.35rem;
  }
}