/* ==========================================================================
   R. Stalionienės odontologijos kabinetas - Modern Static CSS
   ========================================================================== */

/* --------------------------------------------------------------------------
   Local Fonts (Self-Hosted Roboto, Zero 3rd-party Requests)
   -------------------------------------------------------------------------- */
@font-face {
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../assets/fonts/roboto-latin-ext-400.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

@font-face {
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../assets/fonts/roboto-latin-400.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../assets/fonts/roboto-latin-ext-500.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

@font-face {
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../assets/fonts/roboto-latin-500.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../assets/fonts/roboto-latin-ext-700.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

@font-face {
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../assets/fonts/roboto-latin-700.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --color-primary: #184f68;
  --color-primary-dark: #0f3547;
  --color-cyan: #3fd9d9;
  --color-cyan-hover: #0b7272;
  --color-cyan-light: #e6fafa;
  --color-text: #374151;
  --color-text-dark: #111827;
  --color-text-light: #4b5563;
  --color-bg-light: #f9fafb;
  --color-bg-card: #f3f4f6;
  --color-white: #ffffff;
  --color-border: #e5e7eb;
  --font-main: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --container-width: 1140px;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --border-radius-sm: 6px;
  --border-radius-md: 10px;
  --border-radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 25px -3px rgba(0,0,0,0.08), 0 4px 10px -4px rgba(0,0,0,0.04);
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-main);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-white);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-dark);
}

/* Accessible Keyboard Focus Indicators */
:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--border-radius-sm);
}

/* Accessible Skip to Content Link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 20px;
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: 12px 20px;
  z-index: 10000;
  font-weight: 700;
  border-radius: var(--border-radius-sm);
  box-shadow: var(--shadow-lg);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 20px;
  color: var(--color-white);
}

ul {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--color-primary);
  font-weight: 700;
  line-height: 1.25;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* Breadcrumbs */
.breadcrumbs {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.9);
  margin-top: 12px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
}

.breadcrumbs a {
  color: var(--color-cyan);
  text-decoration: none;
}

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

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

/* Top Info Bar */
.top-bar {
  background-color: #ffffff;
  border-bottom: 1px solid var(--color-border);
  padding: 8px 0;
  font-size: 0.9rem;
}

.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.top-bar-title {
  color: var(--color-text-dark);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
}

.top-bar-phones {
  display: flex;
  align-items: center;
  gap: 20px;
}

.phone-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-primary);
  font-weight: 600;
  padding: 4px 8px;
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
}

.phone-link:hover {
  background-color: var(--color-bg-card);
  color: var(--color-primary-dark);
}

.phone-link svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

/* Main Navigation Bar */
.main-header {
  background-color: var(--color-white);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 20px;
  max-width: var(--container-width);
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo picture, .logo img {
  height: 54px;
  width: auto;
  object-fit: contain;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--color-primary);
  padding: 8px 4px;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-cyan);
  transition: width var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary-dark);
}

.nav-link.active::after {
  width: 100%;
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--color-primary);
}

.mobile-toggle svg {
  width: 28px;
  height: 28px;
}

/* ==========================================================================
   Hero Section (Homepage)
   ========================================================================== */

.hero-section {
  position: relative;
  background-color: #0f2b38;
  background-image: image-set(
    url('../assets/hero-bg.webp') type('image/webp'),
    url('../assets/hero-bg.jpg') type('image/jpeg')
  );
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  min-height: 600px;
  display: flex;
  align-items: center;
  padding: 80px 0;
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, rgba(255,255,255,0.95) 0%, rgba(255,255,255,0.90) 45%, rgba(255,255,255,0.25) 100%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 620px;
}

.hero-title {
  font-size: 3.2rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -1px;
}

.hero-subtitle {
  font-size: 1.35rem;
  color: var(--color-primary-dark);
  font-weight: 500;
  line-height: 1.5;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ==========================================================================
   Subheader Banner (Interior Pages)
   ========================================================================== */

.page-subheader {
  position: relative;
  background-color: #184f68;
  background-image: image-set(
    url('../assets/subheader-bg.webp') type('image/webp'),
    url('../assets/subheader-bg.jpg') type('image/jpeg')
  );
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  padding: 90px 0 50px;
  color: var(--color-white);
  text-align: center;
}

.subheader-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(rgba(24, 79, 104, 0.82), rgba(24, 79, 104, 0.90));
}

.page-subheader .container {
  position: relative;
  z-index: 2;
}

.page-title {
  color: var(--color-white);
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

/* ==========================================================================
   CTA Banner (Consultation prompt)
   ========================================================================== */

.cta-strip {
  background-color: var(--color-cyan);
  background-image: image-set(
    url('../assets/cta-pattern.webp') type('image/webp'),
    url('../assets/cta-pattern.jpg') type('image/jpeg')
  );
  background-position: center top;
  background-repeat: no-repeat;
  padding: 40px 0;
  text-align: center;
}

.cta-title {
  color: var(--color-primary-dark);
  font-size: 1.6rem;
  font-weight: 700;
}

.cta-link {
  color: var(--color-primary-dark);
  border-bottom: 2px solid var(--color-primary-dark);
  padding-bottom: 2px;
  margin-left: 8px;
  display: inline-block;
  font-weight: 700;
  transition: all var(--transition-fast);
}

.cta-link:hover {
  color: #000;
  border-color: #000;
  transform: translateX(4px);
}

/* ==========================================================================
   Buttons (High WCAG AA Contrast Guaranteed)
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

.btn-cyan {
  background-color: var(--color-cyan);
  color: var(--color-primary-dark);
  font-weight: 700;
}

.btn-cyan:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

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

.btn-outline:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
  border-color: var(--color-primary-dark);
}

/* ==========================================================================
   Services Section (Paslaugos)
   ========================================================================== */

.section {
  padding: 70px 0;
}

.section-bg-light {
  background-color: var(--color-bg-card);
}

.section-header {
  margin-bottom: 40px;
}

.section-title {
  font-size: 2.2rem;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.services-card {
  background-color: var(--color-white);
  border-radius: var(--border-radius-md);
  padding: 40px;
  box-shadow: var(--shadow-sm);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--color-text-dark);
}

.service-item svg {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  fill: var(--color-primary);
  margin-top: 3px;
}

/* Feature Showcase (Clinic + Photo) */
.showcase-grid {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 48px;
  align-items: center;
}

.showcase-text h2 {
  font-size: 2.2rem;
  margin-bottom: 20px;
}

.showcase-text p {
  font-size: 1.1rem;
  color: var(--color-text);
  margin-bottom: 30px;
}

.showcase-image {
  border-radius: var(--border-radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.showcase-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ==========================================================================
   FAQ Section (AI Search & GEO Optimized)
   ========================================================================== */

.faq-section {
  padding: 70px 0;
  background-color: var(--color-bg-light);
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 860px;
  margin: 0 auto;
}

details.faq-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  padding: 0;
  overflow: hidden;
  transition: all var(--transition-fast);
}

details.faq-item summary {
  padding: 20px 24px;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-primary);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

details.faq-item summary::-webkit-details-marker {
  display: none;
}

details.faq-item summary::after {
  content: '+';
  font-size: 1.6rem;
  font-weight: 400;
  line-height: 1;
  color: var(--color-primary);
  transition: transform 0.2s ease;
  margin-left: 16px;
}

details.faq-item[open] summary::after {
  content: '−';
  transform: rotate(180deg);
}

details.faq-item[open] {
  box-shadow: var(--shadow-sm);
  border-color: var(--color-primary);
}

.faq-content {
  padding: 0 24px 24px;
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--color-text);
  border-top: 1px solid rgba(0, 0, 0, 0.04);
  padding-top: 16px;
}

/* ==========================================================================
   Contacts Section (Kontaktai)
   ========================================================================== */

.contacts-layout {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 30px;
  margin-bottom: 50px;
}

.contact-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.contact-card-icon {
  margin-bottom: 15px;
}

.contact-card-icon img {
  width: 24px;
  height: auto;
}

.contact-card-title {
  font-size: 1.4rem;
  margin-bottom: 16px;
  color: var(--color-primary);
}

.hours-list li {
  padding: 8px 0;
  border-bottom: 1px dashed var(--color-border);
  font-size: 1rem;
}

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

.phone-block {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

.phone-block-label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-text-light);
  letter-spacing: 1px;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.phone-big {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.phone-big a {
  color: var(--color-primary);
}

.phone-big a:hover {
  color: var(--color-primary-dark);
}

.cabinet-photo-card {
  border-radius: var(--border-radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  height: 100%;
}

.cabinet-photo-card picture,
.cabinet-photo-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.cabinet-photo-card:hover img {
  transform: scale(1.02);
}

/* Clean Location & Directions Section (100% Self-Hosted, No Third-Party Iframe) */
.location-card-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 0;
  background-color: var(--color-bg-card);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
}

.location-info-box {
  padding: 50px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.location-info-box h3 {
  font-size: 2rem;
  margin-bottom: 20px;
}

.location-details p {
  font-size: 1.15rem;
  margin-bottom: 12px;
}

.location-directions-box {
  padding: 50px;
  background-color: #edf2f7;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-left: 1px solid var(--color-border);
}

.location-directions-box h4 {
  font-size: 1.3rem;
  margin-bottom: 14px;
}

.location-directions-box p {
  font-size: 1rem;
  margin-bottom: 16px;
  color: var(--color-text);
}

/* ==========================================================================
   Native Accessible <dialog> Privacy Modal (F-04)
   ========================================================================== */

dialog.privacy-dialog {
  border: none;
  border-radius: var(--border-radius-md);
  padding: 40px;
  max-width: 640px;
  width: calc(100% - 40px);
  box-shadow: var(--shadow-lg);
  margin: auto;
  color: var(--color-text);
  background-color: var(--color-white);
  position: fixed;
  inset: 0;
  max-height: 85vh;
  overflow-y: auto;
}

dialog.privacy-dialog::backdrop {
  background-color: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(2px);
}

dialog.privacy-dialog h3 {
  font-size: 1.6rem;
  margin-bottom: 16px;
}

dialog.privacy-dialog p, dialog.privacy-dialog li {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: 12px;
}

dialog.privacy-dialog .modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  font-size: 1.8rem;
  cursor: pointer;
  color: var(--color-text-light);
  line-height: 1;
  padding: 6px 12px;
  border-radius: var(--border-radius-sm);
}

dialog.privacy-dialog .modal-close:hover {
  color: var(--color-text-dark);
  background-color: var(--color-bg-card);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.main-footer {
  background-color: #1e293b;
  color: #cbd5e1;
  padding: 70px 0 0;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-widget-title {
  color: var(--color-white);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.footer-widget p,
.footer-widget li {
  font-size: 0.95rem;
  line-height: 1.8;
  color: #94a3b8;
}

.footer-widget a {
  color: var(--color-cyan);
  transition: color var(--transition-fast);
}

.footer-widget a:hover {
  color: var(--color-white);
}

.footer-bottom {
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.9rem;
  color: #94a3b8;
}

.footer-links {
  display: flex;
  gap: 16px;
  align-items: center;
}

.footer-links a {
  color: #94a3b8;
  text-decoration: underline;
}

.footer-links a:hover {
  color: var(--color-white);
}

.back-to-top {
  background-color: rgba(255, 255, 255, 0.08);
  color: #fff;
  width: 44px;
  height: 44px;
  border-radius: var(--border-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
}

.back-to-top:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* ==========================================================================
   Responsive Media Queries
   ========================================================================== */

@media (max-width: 992px) {
  .hero-title {
    font-size: 2.6rem;
  }
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .showcase-grid {
    grid-template-columns: 1fr;
  }
  .contacts-layout {
    grid-template-columns: 1fr;
  }
  .location-card-grid {
    grid-template-columns: 1fr;
  }
  .location-directions-box {
    border-left: none;
    border-top: 1px solid var(--color-border);
  }
  .location-info-box, .location-directions-box {
    padding: 35px;
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .top-bar .container {
    justify-content: center;
    text-align: center;
  }
  .top-bar-phones {
    justify-content: center;
    width: 100%;
    gap: 12px;
  }
  .mobile-toggle {
    display: block;
  }
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    flex-direction: column;
    padding: 20px;
    gap: 16px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    border-top: 1px solid var(--color-border);
  }
  .nav-menu.open {
    display: flex;
  }
  .hero-section {
    min-height: 480px;
    padding: 50px 0;
  }
  .hero-title {
    font-size: 2.1rem;
  }
  .hero-subtitle {
    font-size: 1.1rem;
  }
  .page-title {
    font-size: 2.2rem;
  }
  .services-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}