:root {
  /* Warm, muted palette from reference */
  --bg: #f7edeb;
  --bg-soft: #f4e8e1;
  --surface: #e9dcd3;
  --text: #42352a;
  --text-body: #a3725b;
  --text-muted: #b18774;
  --outline: #e0d0c3;
  --border: #e0d0c3;
  --font-serif: "Lora", Georgia, serif;
  --font-sans: "Lato", system-ui, sans-serif;
  --radius: 9999px;
  --radius-card: 12px;
  --space: 1.5rem;
}

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

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 237, 235, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav {
  max-width: 1000px;
  margin: 0 auto;
  padding: var(--space) 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: 0.04em;
  color: var(--text);
  text-decoration: none;
  transition: opacity 0.2s, color 0.2s;
  position: relative;
}

.logo::after {
  content: ".";
  color: var(--text-body);
  font-weight: 400;
  margin-left: 1px;
}

.logo:hover {
  opacity: 0.9;
  color: var(--text-body);
}

.nav-links {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  color: var(--text);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color 0.2s, opacity 0.2s;
}

.nav-links a:not(.btn):hover {
  color: var(--text-body);
}

.btn-nav {
  padding: 0.5rem 1.25rem;
  background: var(--surface);
  border: 1.5px solid var(--text);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}

.btn-nav:hover {
  background: var(--text);
  color: var(--bg);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
}

/* Hero */
.hero {
  position: relative;
  margin: 0;
  padding: 6rem 1.5rem 7rem;
  overflow: visible;
  min-height: 60vh;
  display: flex;
  align-items: center;
}

.hero::before {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 100vw;
  top: 0;
  bottom: 0;
  z-index: 0;
  background-image: url("images/bg-img-hero-banner.png");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 1000px;
  width: 100%;
  margin: 0 auto;
  text-align: left;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(1.875rem, 4.5vw, 2.75rem);
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 1rem;
  color: var(--text);
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-family: var(--font-sans);
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--text-body);
  margin: 0 0 1.75rem;
  line-height: 1.65;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius);
  cursor: pointer;
  border: 1.5px solid var(--text);
  background: var(--surface);
  color: var(--text);
  transition: background 0.2s, color 0.2s;
}

.btn-primary {
  background: var(--surface);
  color: var(--text);
  border: 1.5px solid var(--text);
}

.btn-primary:hover {
  background: var(--text);
  color: var(--bg);
}

/* Sections – unified layout */
.section {
  max-width: 1000px;
  margin: 0 auto;
  padding: 5rem 1.5rem;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.625rem, 3.5vw, 2rem);
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--text);
  line-height: 1.3;
}

/* Approach section */
.section.approach {
  padding: 5.5rem 1.5rem 6rem;
}

.approach-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.approach-intro-text .section-title {
  margin-bottom: 1rem;
}

.approach-body p {
  font-family: var(--font-sans);
  color: var(--text-body);
  margin: 0 0 0.875rem;
  font-size: 1.0625rem;
  line-height: 1.7;
}

.approach-body p:last-child {
  margin-bottom: 0;
}

.approach-intro-img {
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--surface);
}

.approach-intro-img img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

/* Case studies section */
.case-studies {
  padding: 5.5rem 1.5rem 6rem;
}

.case-studies .section-title {
  margin-bottom: 0.5rem;
}

.case-study-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.case-study-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
  padding: 3rem 0;
  border-top: 1px solid var(--border);
}

.case-study-item:first-child {
  border-top: none;
  padding-top: 2rem;
}

.case-study-item--reverse .case-study-text {
  order: 2;
}

.case-study-item--reverse .case-study-thumb {
  order: 1;
}

.case-study-text {
  max-width: 32rem;
}

.case-study-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 0.5rem;
  line-height: 1.3;
}

.case-study-desc {
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--text-body);
  line-height: 1.65;
  margin: 0 0 1rem;
}

.case-study-link {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  transition: color 0.2s;
}

.case-study-link:hover {
  color: var(--text-body);
}

.case-study-thumb {
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--surface);
}

.case-study-thumb img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

@media (max-width: 768px) {
  .case-study-item,
  .case-study-item--reverse {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding: 2.5rem 0;
  }

  .case-study-item--reverse .case-study-text,
  .case-study-item--reverse .case-study-thumb {
    order: 0;
  }

  .case-study-thumb {
    order: 1;
  }

  .case-study-text {
    order: 0;
  }
}

/* Homepage CTA block */
.cta-block {
  border-top: 1px solid var(--border);
  padding: 4rem 1.5rem;
}

.cta-block-inner {
  max-width: 1000px;
  margin: 0 auto;
  text-align: center;
}

.cta-block-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 0.5rem;
}

.cta-block-text {
  font-size: 1rem;
  color: var(--text-body);
  margin: 0 0 1.5rem;
}

/* Work / Projects */
.projects {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.card {
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 1.5rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.card:hover {
  border-color: var(--text-muted);
  box-shadow: 0 8px 24px rgba(66, 53, 42, 0.08);
}

.card-placeholder {
  height: 160px;
  background: var(--surface);
  border-radius: 8px;
  margin-bottom: 1rem;
  border: 1px solid var(--border);
}

.card h3 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
  color: var(--text);
}

.card p {
  font-size: 0.9375rem;
  color: var(--text-body);
  margin: 0 0 0.75rem;
  line-height: 1.55;
}

.card-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  transition: color 0.2s;
}

.card-link:hover {
  color: var(--text-body);
}

/* About */
.about-content p {
  font-family: var(--font-sans);
  color: var(--text-body);
  max-width: 56ch;
  margin: 0 0 1rem;
  font-size: 1.0625rem;
  line-height: 1.65;
}

/* Contact form */
.contact-form {
  max-width: 420px;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.contact-form label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
}

.contact-form input,
.contact-form textarea {
  font-family: var(--font-sans);
  font-size: 1rem;
  padding: 0.5rem 0.75rem;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  resize: vertical;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: var(--text-muted);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--text);
}

.contact-form textarea {
  min-height: 120px;
}

.form-status {
  margin-top: 1rem;
  font-size: 0.9375rem;
  min-height: 1.5em;
  color: var(--text-body);
}

.form-status.success {
  color: #2d5a3a;
}

.form-status.error {
  color: #8b3a3a;
}

/* Contact modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(66, 53, 42, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, visibility 0.2s;
}

.modal-overlay.is-open {
  opacity: 1;
  visibility: visible;
}

.modal {
  position: relative;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 1.25rem 1.5rem;
  max-width: 420px;
  width: 100%;
  box-shadow: 0 20px 40px rgba(66, 53, 42, 0.2);
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 2rem;
  height: 2rem;
  padding: 0;
  border: none;
  background: none;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--text-body);
  cursor: pointer;
  transition: color 0.2s;
}

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

.modal-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 0.75rem;
}

/* Nav back link (case study page) */
.nav-back {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-body);
  text-decoration: none;
  transition: color 0.2s;
}

.nav-back:hover {
  color: var(--text);
}

/* Case study detail page – landing layout */
.case-study-page {
  padding: 0;
  margin: 0;
}

.case-study-detail {
  outline: none;
}

.case-study-loading,
.case-study-not-found {
  color: var(--text-body);
  font-size: 1rem;
  max-width: 1000px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

/* Landing hero */
.case-study-landing-hero-banner {
  position: relative;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  padding: 5rem 1.5rem 6rem;
  min-height: 50vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.case-study-landing-hero-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background: rgba(255, 255, 255, 0.55);
}

.case-study-landing-hero {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  padding: 0;
  text-align: center;
}

.case-study-landing-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-body);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin: 0 0 0.875rem;
}

.case-study-landing-title {
  font-family: var(--font-serif);
  font-size: clamp(1.875rem, 4.5vw, 2.75rem);
  font-weight: 700;
  color: var(--text);
  margin: 0 0 1rem;
  line-height: 1.25;
}

.case-study-landing-lead {
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  color: var(--text-body);
  line-height: 1.65;
  margin: 0 0 1.75rem;
  max-width: 36rem;
  margin-left: auto;
  margin-right: auto;
}

.case-study-landing-hero .btn {
  margin-top: 0.25rem;
}

.case-study-landing-hero-img {
  max-width: 1000px;
  margin: 0 auto 3rem;
  padding: 0 1.5rem;
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--surface);
}

.case-study-landing-hero-img img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

/* Landing body – clean sections, no cards */
.case-study-landing-body {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 1.5rem 4rem;
}

.case-study-landing-card {
  margin-bottom: 2.5rem;
}

.case-study-landing-card:last-child {
  margin-bottom: 0;
}

.case-study-landing-card-title {
  font-family: var(--font-serif);
  font-size: 1.375rem;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 0.75rem;
  line-height: 1.3;
}

.case-study-landing-card-content {
  font-family: var(--font-sans);
  color: var(--text-body);
  font-size: 1.0625rem;
  line-height: 1.7;
}

.case-study-landing-card-content p {
  margin: 0 0 0.75rem;
}

.case-study-landing-card-content p:last-child {
  margin-bottom: 0;
}

.case-study-landing-card-content .case-study-subhead {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text);
  margin: 1.25rem 0 0.35rem;
}

.case-study-landing-card-content .case-study-subhead:first-child {
  margin-top: 0;
}

.case-study-detail-list {
  list-style: disc;
  padding-left: 1.35rem;
  margin: 0.5rem 0 0;
}

.case-study-detail-list li {
  margin-bottom: 0.35rem;
}

.case-study-detail-list li::marker {
  color: var(--text-muted);
}

/* Bottom CTA */
.case-study-landing-cta-block {
  border-top: 1px solid var(--border);
  padding: 3.5rem 1.5rem;
  text-align: center;
  max-width: 1000px;
  margin: 0 auto;
}

.case-study-landing-cta-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 0.5rem;
}

.case-study-landing-cta-text {
  font-size: 1rem;
  color: var(--text-body);
  margin: 0 0 1.5rem;
}

.case-study-landing-cta-block .btn {
  margin: 0;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 1.5rem;
  text-align: center;
}

.footer p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-body);
}

/* Mobile */
@media (max-width: 640px) {
  .nav {
    flex-wrap: wrap;
  }

  .nav-links {
    display: none;
    width: 100%;
    flex-direction: column;
    gap: 1rem;
    padding: 1rem 0 0;
    border-top: 1px solid var(--border);
    margin-top: 0.5rem;
  }

  .header.nav-open .nav-links {
    display: flex;
  }

  .nav-toggle {
    display: flex;
  }

  .btn-nav {
    align-self: flex-start;
  }

  .hero {
    padding: 4rem 1.5rem 5rem;
    min-height: auto;
  }

  .section {
    padding: 3.5rem 1.5rem;
  }

  .section.approach {
    padding: 4rem 1.5rem 4.5rem;
  }

  .case-studies {
    padding: 4rem 1.5rem 4.5rem;
  }

  .approach-intro {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .approach-intro-img {
    order: 1;
  }

  .approach-intro-text {
    order: 0;
  }

  .cta-block {
    padding: 3rem 1.5rem;
  }
}