/* Avenir Book font */
@font-face {
  font-family: "Avenir Book";
  src: url("/fonts/avenir-book.ttf") format("truetype");
  font-weight: normal;
  font-style: normal;
}

/* Design system colors and typography */
:root {
  color-scheme: light;
  --color-bg-primary: #F7F8F4;
  --color-bg-secondary: #E7ECE6;
  --color-text-primary: #142317;
  --color-text-body: #4B554D;
  --color-border: #8B948A;
  --color-accent-soft: #BCC6BC;
  --color-accent-taupe: #B7B19E;
  --color-button-bg: #67968c;

  --font-size-hero: 32px;
  --font-size-heading: 22px;
  --font-size-body: 18px;
  --font-size-subtext: 14px;
  --font-size-buttons: 14px;
  --font-size-footer: 12px;
}

* {
  font-family: "Avenir Book", system-ui, sans-serif;
}

html {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background-color: var(--color-bg-primary);
}

body {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background-color: var(--color-bg-primary);
  color: var(--color-text-body);
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
  overflow-y: auto;
}

/* Tiled banner */
.banner-tiled {
  width: 100%;
  height: 640px;
  background-image: url('/images/banner.png');
  background-repeat: no-repeat;
  background-size: contain;
  background-position: center center;
}

/* ---------- Home (MVP) page ---------- */

.mvp-page {
  background-color: var(--color-bg-secondary);
}

.mvp-hero {
  text-align: center;
  padding: 1rem 2rem 0.03em;
  font-size: var(--font-size-hero);
  color: var(--color-text-primary);
}

.mvp-hero p {
  margin: 0;
}

.mvp-banner {
  width: 70%;
  display: block;
  margin: 0 auto;
}

.mvp-tagline {
  text-align: center;
  font-size: 20px;
  color: var(--color-text-primary);
}

.mvp-tagline p {
  margin: 0;
}

.mvp-section {
  max-width: 64rem;
  margin: 0 auto;
  padding: 1.5rem 2rem;
  color: var(--color-text-body);
  font-size: var(--font-size-body);
  line-height: 1.7;
}

.mvp-section h1 {
  font-size: var(--font-size-hero);
  color: var(--color-text-primary);
  margin-bottom: 1rem;
}

.mvp-section h2 {
  font-size: var(--font-size-hero);
  color: var(--color-text-primary);
  margin-bottom: 1rem;
}

.mvp-section h3 {
  font-size: var(--font-size-heading);
  color: var(--color-text-primary);
  font-weight: 700;
  margin-bottom: 1rem;
}

.mvp-section h4 {
  font-size: var(--font-size-body);
  color: var(--color-text-primary);
  font-weight: 700;
  margin-top: 1rem;
  margin-bottom: 0.25rem;
}

.mvp-section p {
  margin-bottom: 1rem;
}

.mvp-section ul {
  list-style: disc;
  list-style-position: inside;
  margin-bottom: 1rem;
}

.mvp-section ul li {
  margin-bottom: 0.25rem;
}

.mvp-section a {
  text-decoration: underline;
  color: var(--color-text-primary);
}

.mvp-about {
  display: flex;
  align-items: flex-start;
  gap: 3rem;
}

.mvp-about-image {
  flex-shrink: 0;
  width: 3.78in;
  height: 4.53in;
  object-fit: cover;
}

.mvp-case-study + .mvp-case-study {
  margin-top: 2rem;
}

.mvp-case-study img {
  width: 100%;
  margin-bottom: 1.5rem;
  object-fit: cover;
}

.mvp-case-study-tiles {
  display: flex;
  gap: 1.5rem;
}

.mvp-case-study-tile {
  flex: 1 1 0;
  background-color: var(--color-bg-primary);
  border-radius: 0.5rem;
  padding: 1.25rem 1.25rem 1.5rem;
}

.mvp-section .mvp-case-study-tile h4 {
  text-align: center;
  margin-top: 0;
  margin-bottom: 0.75rem;
}

.mvp-contact-tile {
  text-align: center;
}

.mvp-section .mvp-case-study-tile p {
  margin-bottom: 0;
}

.mvp-section .mvp-case-study-tile p + p {
  margin-top: 0.75rem;
}

.mvp-services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-bottom: 1rem;
}

.mvp-service-tile {
  background-color: var(--color-bg-primary);
  border-radius: 0.5rem;
  padding: 1.25rem;
  text-align: center;
  vertical-align: middle;
  font-weight: 700;
  color: var(--color-text-primary);
}

/* ---------- About page ---------- */

.about-page {
  background-color: var(--color-bg-primary);
  padding: 3rem 2rem;
}

.about-article {
  max-width: 64rem;
  margin: 0 auto;
}

.about-title {
  font-size: var(--font-size-hero);
  color: var(--color-text-primary);
  margin-bottom: 2rem;
}

.service-section {
  margin-bottom: 3rem;
}

.service-section-inner {
  display: flex;
  align-items: flex-start;
  gap: 3rem;
}

.service-content {
  flex: 1;
  color: var(--color-text-body);
  font-size: var(--font-size-body);
  line-height: 1.8;
}

.service-content h2 {
  font-size: var(--font-size-heading);
  color: var(--color-text-primary);
  margin-bottom: 0.75rem;
}

.service-section-inner:not(.service-section-stacked) .service-image {
  padding-top: calc(var(--font-size-heading) * 1.2 + 0.75rem);
}

.service-content p {
  margin-bottom: 1rem;
}

.mvp-wide-image {
  width: 3.78in;
  height: auto;
}

.service-image:has(.mvp-wide-image) {
  align-self: center;
}

.service-section-stacked {
  display: block;
}

.service-section-stacked .service-image img {
  width: 100%;
  height: auto;
  border-radius: 8px;
}

.service-image-link {
  display: inline-block;
  border-radius: 8px;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.service-image-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.service-image-link img {
  display: block;
  width: 100%;
  height: auto;
}

/* ---------- Inner pages ---------- */

.inner-page {
  background-color: var(--color-bg-primary);
  padding: 3rem 2rem;
}

.inner-page-article {
  max-width: 48rem;
  margin: 0 auto;
}

.inner-page-article.wide {
  max-width: 64rem;
}

.inner-page-article h1 {
  font-size: var(--font-size-hero);
  color: var(--color-text-primary);
  margin-bottom: 1.5rem;
}

/* ---------- Header ---------- */

header {
  flex-shrink: 0;
  background-color: var(--color-accent-soft);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  padding: 1.5rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo {
  flex-shrink: 0;
  cursor: pointer;
  text-decoration: none;
  color: var(--color-text-primary);
  font-size: var(--font-size-heading);
  line-height: 1.2;
}

.header-nav {
  display: flex;
  gap: 1rem;
}

.nav-btn {
  padding: 0.5rem 1.5rem;
  background-color: var(--color-button-bg);
  color: var(--color-text-primary);
  font-size: var(--font-size-buttons);
  border-radius: 0.5rem;
  text-decoration: none;
  transition: background-color 0.15s;
}

.nav-btn:hover {
  background-color: var(--color-accent-taupe);
}

.cta-btn {
  padding: 0.5rem 1.5rem;
  background-color: var(--color-accent-soft);
  color: var(--color-text-primary);
  font-size: var(--font-size-body);
  border-radius: 0.5rem;
  text-decoration: none;
  transition: background-color 0.15s;
}

.cta-btn:hover {
  background-color: var(--color-accent-taupe);
}

/* ---------- Footer ---------- */

footer {
  flex-shrink: 0;
  background-color: var(--color-accent-soft);
  border-top: 1px solid var(--color-border);
  padding: 1rem 0;
  text-align: center;
  color: var(--color-text-primary);
  font-size: var(--font-size-footer);
}

/* ---------- Responsive / Mobile ---------- */

@media (max-width: 768px) {
  .header-inner {
    flex-wrap: wrap;
    gap: 0.75rem;
    padding: 1rem;
  }

  .mvp-about {
    flex-direction: column;
    gap: 1.5rem;
  }

  .mvp-about-image {
    width: 100%;
    height: auto;
    max-width: 280px;
    align-self: center;
  }

  .mvp-services-grid {
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  }

  .mvp-case-study-tiles {
    flex-direction: column;
  }

  .service-section-inner {
    flex-direction: column;
    gap: 1.5rem;
  }

  .service-section-inner:not(.service-section-stacked) .service-image {
    padding-top: 0;
  }

  .mvp-wide-image {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .header-inner {
    padding: 0.75rem 1rem;
  }

  .nav-btn {
    padding: 0.4rem 0.9rem;
  }

  .mvp-section {
    padding: 1rem;
  }

  .about-page {
    padding: 1.5rem 1rem;
  }

  .inner-page {
    padding: 1.5rem 1rem;
  }

  .mvp-banner {
    width: 95%;
  }

  .banner-tiled {
    height: 300px;
  }
}

/* ---------- Contact tiles ---------- */

.mvp-contact-tile a {
  text-decoration: none;
  color: var(--color-text-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  transition: color 0.15s;
  font-size: var(--font-size-body);
}

.mvp-contact-tile a:hover {
  color: var(--color-button-bg);
}

.mvp-contact-tile svg {
  fill: var(--color-button-bg);
  transition: fill 0.15s;
  flex-shrink: 0;
}

.mvp-contact-tile a:hover svg {
  fill: var(--color-text-primary);
}

/* ---------- Contact form ---------- */

.contact-form-section {
  padding-top: 0;
}

.contact-form-card {
  max-width: 42rem;
  background: var(--color-bg-primary);
  border: 1px solid var(--color-accent-soft);
  border-radius: 0.5rem;
  padding: 2rem 2.5rem 2.25rem;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-group label {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-primary);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.65rem 0.875rem;
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: 0.375rem;
  font-family: "Avenir Book", system-ui, sans-serif;
  font-size: var(--font-size-body);
  color: var(--color-text-primary);
  line-height: 1.5;
  transition: border-color 0.15s, box-shadow 0.15s;
  box-sizing: border-box;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-button-bg);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-button-bg);
  box-shadow: 0 0 0 3px rgba(103, 150, 140, 0.2);
}

.form-group input:invalid:not(:placeholder-shown),
.form-group textarea:invalid:not(:placeholder-shown) {
  border-color: #b94040;
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.contact-submit-btn {
  align-self: flex-start;
  padding: 0.6rem 2rem;
  background-color: var(--color-accent-soft);
  color: var(--color-text-primary);
  font-family: "Avenir Book", system-ui, sans-serif;
  font-size: var(--font-size-buttons);
  font-weight: 700;
  letter-spacing: 0.04em;
  border: none;
  border-radius: 0.5rem;
  cursor: pointer;
  transition: background-color 0.15s;
}

.contact-submit-btn:hover:not(:disabled) {
  background-color: var(--color-accent-taupe);
}

.contact-submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.form-feedback {
  padding: 0.75rem 1rem;
  border-radius: 0.375rem;
  font-size: var(--font-size-body);
  line-height: 1.5;
}

.form-feedback--success {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
  border: 1px solid var(--color-accent-soft);
}

.form-feedback--error {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  border: 1px solid var(--color-accent-taupe);
  border-left-width: 4px;
}

@media (max-width: 480px) {
  .contact-form-card {
    padding: 1.25rem 1rem 1.5rem;
  }

  .contact-submit-btn {
    width: 100%;
    text-align: center;
  }
}