*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-warm: #f8f4eb;
  --bg-white: #fdfcf9;
  --text-primary: #1e1e1e;
  --text-muted: #4a4a4a;
  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Source Serif 4', Georgia, serif;

  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: clamp(1.333rem, 1.2rem + 0.4vw, 1.5rem);
  --text-2xl: clamp(1.75rem, 1.4rem + 1vw, 2.369rem);

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: clamp(4rem, 3rem + 3vw, 6rem);
  --space-4xl: clamp(5rem, 4rem + 4vw, 8rem);
}

/* --- Skip link --- */

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  padding: 0.5rem 1rem;
  background-color: var(--text-primary);
  color: var(--bg-warm);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  border-radius: 0 0 6px 6px;
  z-index: 100;
  text-decoration: none;
}

.skip-link:focus {
  top: 0;
}

/* --- Focus --- */

:focus-visible {
  outline: 2px solid var(--text-primary);
  outline-offset: 2px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--text-primary);
  background-color: var(--bg-warm);
  line-height: 1.7;
  font-kerning: normal;
  -webkit-font-smoothing: antialiased;
}

/* --- Hero --- */

.hero {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-warm);
  position: relative;
  padding: 2rem;
}

.hero__content {
  text-align: center;
}

.hero__logo {
  max-width: 280px;
  width: 100%;
  height: auto;
}

.hero__baseline {
  font-family: var(--font-heading);
  font-weight: 400;
  font-size: var(--text-lg);
  color: var(--text-muted);
  margin-top: var(--space-lg);
  letter-spacing: 0.04em;
}

.hero__chevron {
  position: absolute;
  bottom: var(--space-xl);
  color: var(--text-muted);
  animation: drift 3s cubic-bezier(0.33, 0, 0.2, 1) infinite;
  text-decoration: none;
}

@keyframes drift {
  0%, 100% { transform: translateY(0); opacity: 0.6; }
  50% { transform: translateY(6px); opacity: 1; }
}

/* --- Sections --- */

.section-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-2xl);
  margin-bottom: var(--space-2xl);
  line-height: 1.2;
}

/* --- Services --- */

.services {
  background-color: var(--bg-white);
  padding: var(--space-4xl) var(--space-lg);
}

.services .section-title {
  text-align: center;
}

.services__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  max-width: 900px;
  margin: 0 auto;
}

.card {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 0 var(--space-lg);
  align-items: start;
}

.card__icon {
  grid-row: 1 / 3;
  padding-top: 0.15rem;
}

.card__title {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-xl);
  margin-bottom: var(--space-xs);
  line-height: 1.2;
}

.card__text {
  font-size: var(--text-base);
  color: var(--text-muted);
  line-height: 1.7;
}

/* --- About --- */

.about {
  background-color: var(--bg-warm);
  padding: var(--space-3xl) var(--space-lg);
  max-width: 680px;
  margin: 0 auto;
}

.about__text {
  max-width: 60ch;
  font-size: var(--text-lg);
  color: var(--text-muted);
  line-height: 1.8;
}

/* --- Contact --- */

.contact {
  background-color: var(--bg-white);
  padding: var(--space-4xl) var(--space-lg);
}

.contact .section-title {
  text-align: center;
}

.contact__form {
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-sm);
  letter-spacing: 0.03em;
  margin-bottom: var(--space-xs);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--text-primary);
  background-color: var(--bg-warm);
  border: 1px solid transparent;
  border-radius: 6px;
  transition: border-color 0.2s ease;
}

.form-group input:focus-visible,
.form-group textarea:focus-visible {
  border-color: var(--text-primary);
  outline: 2px solid var(--text-primary);
  outline-offset: 1px;
}

.form-group input.has-error,
.form-group textarea.has-error {
  border-color: #c62828;
}

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

.contact__submit {
  display: block;
  width: 100%;
  padding: 0.85rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-base);
  color: var(--bg-warm);
  background-color: var(--text-primary);
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

.contact__submit:hover {
  transform: scale(1.015);
  opacity: 0.9;
}

.contact__submit:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.contact__status {
  text-align: center;
  margin-top: var(--space-md);
  font-size: var(--text-sm);
}

.contact__status--success {
  color: #2e7d32;
}

.contact__status--error {
  color: #c62828;
}

.required {
  color: #c62828;
}

.form-error {
  font-size: var(--text-sm);
  color: #c62828;
  margin-top: var(--space-xs);
  min-height: 0;
}

.form-error:empty {
  display: none;
}

/* --- Footer --- */

.footer {
  background-color: var(--text-primary);
  color: var(--bg-warm);
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
}

.footer__icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-md);
}

.footer__email {
  display: block;
  color: var(--bg-warm);
  text-decoration: none;
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  margin-bottom: var(--space-sm);
  transition: opacity 0.2s ease;
}

.footer__email:hover {
  opacity: 0.7;
}

.footer__copy {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  opacity: 0.5;
  letter-spacing: 0.02em;
}

/* --- Fade-in animation --- */

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Desktop (768px+) --- */

@media (min-width: 768px) {
  .hero__logo {
    max-width: 400px;
  }

  .hero__baseline {
    margin-top: var(--space-xl);
  }

  .services__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-2xl);
  }

  .contact__submit {
    width: auto;
    padding: 0.85rem var(--space-2xl);
    margin: 0 auto;
  }
}

/* --- Reduced motion --- */

@media (prefers-reduced-motion: reduce) {
  .hero__chevron {
    animation: none;
  }

  .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }

  html {
    scroll-behavior: auto;
  }
}