/*
  Global stylesheet for Dr. Olga Kilstein's psychology practice.

  Warm cream + deep sage palette with a classic serif for headings.
  No external fonts or scripts — everything renders from system resources
  so the site stays fast and dependable on static hosting.
*/

:root {
  /* Colour palette */
  --color-bg: #FBF9F4;           /* warm cream */
  --color-bg-alt: #F2EDE3;       /* deeper cream */
  --color-surface: #FFFFFF;
  --color-primary: #46604A;      /* deep sage green */
  --color-primary-dark: #37493B;
  --color-accent: #B4652F;       /* terracotta, for eyebrow labels */
  --color-text: #2F352F;         /* warm charcoal */
  --color-text-soft: #5A6157;
  --color-border: #E3DCCD;
  --color-footer: #37493B;
  --color-footer-text: #E8E4D8;

  /* Typography */
  --font-heading: 'Iowan Old Style', 'Palatino Linotype', 'Book Antiqua', Georgia, serif;
  --font-body: 'Avenir Next', 'Segoe UI', 'Helvetica Neue', Helvetica, Arial, sans-serif;

  /* Layout */
  --max-width: 1140px;
  --radius: 10px;
  --shadow: 0 2px 14px rgba(47, 53, 47, 0.07);
}

html {
  box-sizing: border-box;
  scroll-behavior: smooth;
}
*, *::before, *::after {
  box-sizing: inherit;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.25;
  color: var(--color-primary-dark);
}

a {
  color: var(--color-primary);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
a:focus-visible, button:focus-visible, .btn:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 4px;
}

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

/* Skip link for keyboard users */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-primary);
  color: #fff;
  padding: 0.6rem 1rem;
  z-index: 2000;
  border-radius: 0 0 6px 0;
}
.skip-link:focus {
  left: 0;
}

/* Eyebrow label above headings */
.eyebrow {
  display: block;
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

/* ---------------------------------------------------------------- Top bar */
.topbar {
  background-color: var(--color-footer);
  color: var(--color-footer-text);
  font-size: 0.85rem;
}
.topbar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.45rem 1.25rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.topbar a {
  color: #fff;
  font-weight: 600;
  white-space: nowrap;
}
.topbar-contact {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
  justify-content: center;
}

/* -------------------------------------------------------------- Navigation */
header {
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.navbar {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0.9rem 1.25rem;
}
.navbar-brand {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  letter-spacing: 0.01em;
  white-space: nowrap;
}
.navbar-brand:hover {
  text-decoration: none;
}
.navbar-brand span {
  color: var(--color-accent);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  flex-wrap: wrap;
}
.nav-links {
  display: flex;
  gap: 1.4rem;
  align-items: center;
  flex-wrap: wrap;
}
.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
}
.nav-links a:hover {
  text-decoration: none;
  color: var(--color-primary);
  border-bottom-color: var(--color-accent);
}
.nav-links a[aria-current="page"] {
  color: var(--color-primary);
  border-bottom-color: var(--color-accent);
  font-weight: 600;
}

/* Mobile nav toggle (CSS only, no JavaScript) */
.nav-toggle {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.nav-toggle-label {
  display: none;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 6px;
}
.nav-toggle-label span,
.nav-toggle-label span::before,
.nav-toggle-label span::after {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary-dark);
  border-radius: 2px;
  position: relative;
  transition: transform 0.2s ease;
}
.nav-toggle-label span::before,
.nav-toggle-label span::after {
  content: '';
  position: absolute;
}
.nav-toggle-label span::before { top: -7px; }
.nav-toggle-label span::after  { top: 7px; }

/* --------------------------------------------------------------- Buttons */
.cta-buttons {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}
.btn {
  display: inline-block;
  padding: 0.65rem 1.4rem;
  border: 1px solid transparent;
  border-radius: 6px;
  font-family: var(--font-body);
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
  transition: background-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}
.btn:hover {
  text-decoration: none;
}
.btn-primary {
  background-color: var(--color-primary);
  color: #fff;
}
.btn-primary:hover {
  background-color: var(--color-primary-dark);
  box-shadow: var(--shadow);
}
.btn-secondary {
  background-color: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn-secondary:hover {
  background-color: var(--color-primary);
  color: #fff;
}

/* ------------------------------------------------------------------ Hero */
.hero {
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
}
.hero-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 3rem;
  padding: 4.5rem 1.25rem;
  max-width: var(--max-width);
  margin: 0 auto;
}
.hero-text {
  flex: 1.2;
  min-width: 300px;
}
.hero-text h1 {
  font-size: clamp(2rem, 4.2vw, 2.9rem);
  margin: 0 0 1.1rem;
}
.hero-text .lead {
  font-size: 1.15rem;
  color: var(--color-text-soft);
  margin-bottom: 1.75rem;
  max-width: 580px;
}
.hero-phone {
  margin-top: 1.25rem;
  font-weight: 600;
}
.hero-image {
  flex: 0.8;
  min-width: 260px;
  display: flex;
  justify-content: center;
}
.hero-image img {
  width: min(100%, 380px);
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: 0 10px 30px rgba(55, 73, 59, 0.18);
}

/* -------------------------------------------------------------- Features */
.features {
  background-color: var(--color-bg);
  padding: 4.5rem 1.25rem;
}
.feature-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.5rem;
}
.feature {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow);
}
.feature h3 {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
}
.feature p {
  margin: 0;
  font-size: 0.97rem;
  color: var(--color-text-soft);
}

/* --------------------------------------------------------- About preview */
.about-preview {
  background-color: var(--color-bg-alt);
}
.about-preview-inner {
  padding: 4.5rem 1.25rem;
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 3rem;
  align-items: center;
}
.about-preview-text {
  flex: 1 1 320px;
}
.about-preview-text h2 {
  margin-top: 0;
  font-size: 2rem;
}
.about-preview-img {
  flex: 1 1 320px;
}
.about-preview-img img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* ------------------------------------------------------------ Specialties */
.specialties {
  background-color: var(--color-bg);
  padding: 4.5rem 1.25rem;
}
.specialties-heading {
  text-align: center;
  margin: 0 auto 2.5rem;
  max-width: 640px;
}
.specialties-heading h2 {
  margin: 0;
  font-size: 2rem;
}
.specialty-grid {
  max-width: var(--max-width);
  margin: 2rem auto 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}
.specialty {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.9rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.specialty:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(47, 53, 47, 0.12);
}
.specialty h3 {
  margin: 0;
  font-size: 1.2rem;
}
.specialty p {
  margin: 0;
  color: var(--color-text-soft);
  font-size: 0.97rem;
  flex-grow: 1;
}
.specialty .btn {
  align-self: flex-start;
}

/* ------------------------------------------------------------ CTA section */
.cta-section {
  background-color: var(--color-footer);
  color: var(--color-footer-text);
  text-align: center;
  padding: 4rem 1.25rem;
}
.cta-section h2 {
  color: #fff;
  margin: 0 0 1rem;
  font-size: 2rem;
}
.cta-section p {
  max-width: 560px;
  margin: 0 auto 2rem;
}
.cta-section .btn-primary {
  background-color: var(--color-bg);
  color: var(--color-primary-dark);
}
.cta-section .btn-primary:hover {
  background-color: #fff;
}

/* ---------------------------------------------------------------- Footer */
footer {
  background-color: var(--color-footer);
  color: var(--color-footer-text);
  padding: 3rem 1.25rem 2rem;
  border-top: 1px solid rgba(255,255,255,0.08);
}
footer .footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}
footer h4 {
  color: #fff;
  margin: 0 0 0.75rem;
  font-size: 1.05rem;
}
footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
footer li {
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
}
footer a {
  color: #fff;
}
.footer-note {
  max-width: var(--max-width);
  margin: 2rem auto 0;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(255,255,255,0.15);
  font-size: 0.85rem;
  color: var(--color-footer-text);
  text-align: center;
}

/* ---------------------------------------------------------- Page headers */
.page-hero {
  background:
    linear-gradient(rgba(55, 73, 59, 0.55), rgba(55, 73, 59, 0.55)),
    url('../images/office.jpg') center / cover no-repeat;
  color: #fff;
  padding: 5rem 1.25rem;
  text-align: center;
}
.page-hero h1 {
  color: #fff;
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  margin: 0;
  text-shadow: 0 1px 8px rgba(0,0,0,0.25);
}

/* ---------------------------------------------------- Generic page layout */
.page-section {
  max-width: 780px;
  margin: 0 auto;
  padding: 3.5rem 1.25rem;
}
.page-section > h1,
.page-section > h2:first-child {
  margin-top: 0;
  font-size: 2rem;
}
.page-section h2 {
  margin-top: 2.25rem;
  margin-bottom: 0.75rem;
}
.page-section h3 {
  margin-top: 1.75rem;
  margin-bottom: 0.5rem;
  font-size: 1.2rem;
}
.page-section.wide {
  max-width: var(--max-width);
}

/* ------------------------------------------------------------ Contact page */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}
.contact-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.9rem;
  box-shadow: var(--shadow);
  text-align: center;
}
.contact-card h3 {
  margin: 0 0 0.5rem;
}
.contact-card p {
  color: var(--color-text-soft);
  font-size: 0.97rem;
  margin: 0 0 1.25rem;
}

/* ------------------------------------------------------------- Error page */
.error-page {
  text-align: center;
  padding: 6rem 1.25rem;
}
.error-page h1 {
  font-size: 2.4rem;
  margin-bottom: 1rem;
}
.error-page p {
  max-width: 480px;
  margin: 0 auto 2rem;
  color: var(--color-text-soft);
}

/* ------------------------------------------------------------ Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}

/* ------------------------------------------------------------ Media queries */
@media (max-width: 860px) {
  .nav-toggle-label {
    display: block;
  }
  .nav-menu {
    display: none;
    flex-basis: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
    padding: 1rem 0 0.5rem;
  }
  .nav-toggle:checked ~ .nav-menu {
    display: flex;
  }
  .navbar {
    flex-wrap: wrap;
  }
  .nav-links {
    flex-direction: column;
    gap: 0.25rem;
    align-items: stretch;
  }
  .nav-links a {
    padding: 0.6rem 0.25rem;
    border-bottom: 1px solid var(--color-border);
    font-size: 1.05rem;
  }
  .nav-links a:hover,
  .nav-links a[aria-current="page"] {
    border-bottom-color: var(--color-border);
  }
  .cta-buttons {
    flex-direction: column;
  }
  .hero-inner {
    flex-direction: column-reverse;
    text-align: center;
    padding: 3rem 1.25rem;
    gap: 2rem;
  }
  .hero-text .lead {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-text .cta-buttons {
    flex-direction: row;
    justify-content: center;
  }
  .topbar-inner {
    justify-content: center;
    text-align: center;
  }
}