/* ==========================================================================
   個別指導学院 スタディルーム - style.css
   ========================================================================== */

/* --- Custom Properties / Design System --- */
:root {
  /* Colors */
  --color-primary: #1d4ed8;       /* 知的ディープブルー */
  --color-primary-light: #eff6ff;
  --color-primary-dark: #1e3a8a;
  --color-secondary: #f97316;     /* スタディブライトイエロー/オレンジ */
  --color-secondary-hover: #ea580c;
  --color-accent: #10b981;        /* エメラルドグリーン（成長・安心） */
  --color-accent-light: #ecfdf5;
  --color-sky-blue: #3b82f6;      /* コースカラー（中1・2） */
  --color-sky-light: #dbeafe;
  
  --color-text: #1e293b;          /* Slate 800 */
  --color-text-muted: #64748b;    /* Slate 500 */
  --color-border: #cbd5e1;        /* Slate 300 */
  --color-border-light: #e2e8f0;  /* Slate 200 */
  
  --color-bg-base: #ffffff;
  --color-bg-alt: #f8fafc;        /* Slate 50 */
  --color-bg-accent: #fdf2e9;     /* オレンジ系の背景 */
  --color-error: #ef4444;         /* エラーレッド */
  --color-error-light: #fef2f2;
  
  /* Fonts */
  --font-sans: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  
  /* Layout & Spacing */
  --container-width: 1200px;
  --header-height: 80px;
  --header-height-mobile: 70px;
  
  /* Radius & Shadows */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 24px;
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 15px -3px rgba(30, 58, 138, 0.08), 0 4px 6px -4px rgba(30, 58, 138, 0.08);
  
  /* Transition */
  --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 20px);
}

@media (max-width: 768px) {
  html {
    scroll-padding-top: calc(var(--header-height-mobile) + 10px);
  }
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography elements */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-primary-dark);
}

p {
  margin-bottom: 1.25rem;
}

p:last-child {
  margin-bottom: 0;
}

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

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

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

/* Skip Link (Accessibility) */
.skip-link {
  position: absolute;
  top: -100px;
  left: 20px;
  background-color: var(--color-secondary);
  color: white;
  padding: 10px 20px;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  font-weight: bold;
  z-index: 9999;
  transition: top 0.2s ease;
  box-shadow: var(--shadow-md);
}

.skip-link:focus {
  top: 0;
  outline: 3px solid var(--color-primary-dark);
  outline-offset: 2px;
}

/* --- Layout Containers --- */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.section {
  padding-top: 5.5rem;
  padding-bottom: 5.5rem;
}

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

@media (max-width: 768px) {
  .section {
    padding-top: 3.5rem;
    padding-bottom: 3.5rem;
  }
}

/* Section Headers */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3.5rem auto;
}

.section-title {
  font-size: 2.25rem;
  margin-bottom: 1rem;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background-color: var(--color-secondary);
  border-radius: var(--radius-sm);
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

@media (max-width: 768px) {
  .section-header {
    margin-bottom: 2.5rem;
  }
  .section-title {
    font-size: 1.75rem;
  }
  .section-subtitle {
    font-size: 1rem;
  }
}

/* --- Common UI Components --- */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1rem;
  padding: 0.875rem 2rem;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition-base);
  text-align: center;
  vertical-align: middle;
  user-select: none;
  min-height: 48px; /* Tap Target Size Rule */
}

.btn-primary {
  background-color: var(--color-secondary);
  color: #white;
  color: #ffffff;
  box-shadow: 0 4px 14px 0 rgba(249, 115, 22, 0.4);
}

.btn-primary:hover, .btn-primary:focus-visible {
  background-color: var(--color-secondary-hover);
  box-shadow: 0 6px 20px 0 rgba(234, 88, 12, 0.45);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(1px);
}

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

.btn-outline:hover, .btn-outline:focus-visible {
  background-color: var(--color-primary-light);
  color: var(--color-primary-dark);
}

.btn-sm {
  font-size: 0.875rem;
  padding: 0.5rem 1.25rem;
  min-height: 40px; /* 小サイズボタン */
}

.btn-lg {
  font-size: 1.125rem;
  padding: 1rem 2.5rem;
  min-height: 54px;
}

.btn-block {
  display: flex;
  width: 100%;
}

.btn:focus-visible {
  outline: 3px solid var(--color-primary-dark);
  outline-offset: 3px;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  font-weight: bold;
  border-radius: var(--radius-sm);
  line-height: 1;
}

.badge-required {
  background-color: var(--color-error);
  color: white;
  margin-left: 0.5rem;
  vertical-align: middle;
}

/* --- Header --- */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-sm);
  height: var(--header-height);
  display: flex;
  align-items: center;
  transition: var(--transition-base);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
}

.logo-text {
  font-size: 0.75rem;
  font-weight: bold;
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo-main {
  font-size: 1.35rem;
  color: var(--color-primary-dark);
  letter-spacing: normal;
  margin-top: 0.15rem;
  font-weight: 800;
}

/* Navigation */
.nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-link {
  font-weight: 700;
  color: var(--color-text);
  font-size: 0.95rem;
  position: relative;
  padding: 0.5rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 3px;
  background-color: var(--color-secondary);
  border-radius: var(--radius-sm);
  transition: var(--transition-base);
}

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

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

/* Menu Toggle Button (Mobile Hamburger) */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 22px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
}

.menu-toggle span {
  width: 100%;
  height: 3px;
  background-color: var(--color-primary-dark);
  border-radius: var(--radius-sm);
  transition: var(--transition-base);
  transform-origin: left center;
}

/* Mobile responsive navigation header */
@media (max-width: 1024px) {
  .header {
    height: var(--header-height-mobile);
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .nav {
    position: fixed;
    top: var(--header-height-mobile);
    right: -100%;
    width: 280px;
    height: calc(100vh - var(--header-height-mobile));
    background-color: white;
    flex-direction: column;
    align-items: flex-start;
    padding: 2.5rem 1.5rem;
    gap: 1.5rem;
    box-shadow: -4px 0 15px rgba(0, 0, 0, 0.05);
    transition: var(--transition-base);
    overflow-y: auto;
  }
  
  .nav-link {
    width: 100%;
    font-size: 1.125rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-border-light);
  }
  
  .nav-link::after {
    display: none;
  }
  
  .nav .btn {
    width: 100%;
    margin-top: 1rem;
  }
  
  /* Opened nav state */
  .nav.is-open {
    right: 0;
  }
  
  /* Hamburger open animation */
  .menu-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: rotate(45deg) translate(2px, -2px);
  }
  .menu-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
    width: 0;
  }
  .menu-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: rotate(-45deg) translate(2px, 2px);
  }
}

/* --- Hero Section --- */
.hero {
  background-color: var(--color-primary-light);
  padding-top: 4.5rem;
  padding-bottom: 7.5rem;
  position: relative;
  overflow: hidden;
}

.hero-container {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-content {
  max-width: 650px;
}

.hero-sub {
  display: inline-block;
  background-color: var(--color-accent-light);
  color: var(--color-accent);
  font-weight: 700;
  font-size: 0.875rem;
  padding: 0.35rem 1rem;
  border-radius: 50px;
  margin-bottom: 1.5rem;
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.hero-title {
  font-size: 3rem;
  line-height: 1.25;
  margin-bottom: 1.5rem;
  font-weight: 800;
}

.hero-title .highlight {
  color: var(--color-secondary);
  background: linear-gradient(transparent 70%, #ffedd5 70%);
}

.hero-lead {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  margin-bottom: 2rem;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-image-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
}

.hero-svg {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 4px solid white;
}

/* Wave Decoration */
.hero-wave {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  line-height: 0;
  z-index: 1;
}

.hero-wave svg {
  position: relative;
  display: block;
  width: 100%;
  height: 80px;
}

@media (max-width: 1024px) {
  .hero {
    padding-top: 3rem;
    padding-bottom: 5.5rem;
  }
  
  .hero-container {
    grid-template-columns: 1fr;
    gap: 3.5rem;
    text-align: center;
  }
  
  .hero-content {
    margin: 0 auto;
  }
  
  .hero-title {
    font-size: 2.25rem;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .hero-image-wrapper {
    max-width: 420px;
    margin: 0 auto;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.85rem;
  }
  .hero-actions .btn {
    width: 100%;
  }
}

/* --- Features Section --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.feature-card {
  background-color: white;
  padding: 2.5rem 2rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border-light);
  transition: var(--transition-base);
  position: relative;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background-color: var(--color-primary);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  opacity: 0;
  transition: var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary-light);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  line-height: 1;
  display: inline-block;
}

.feature-card h3 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  font-weight: 700;
}

.feature-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* --- Courses Section --- */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.course-card {
  background-color: white;
  border-radius: var(--radius-lg);
  border: 2px solid var(--color-border-light);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: var(--transition-base);
  display: flex;
  flex-direction: column;
}

.course-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
  transform: translateY(-4px);
}

.course-header {
  padding: 1.75rem 1.75rem;
  background-color: var(--color-accent);
  color: white;
}

.course-header h3 {
  color: inherit;
  font-size: 1.35rem;
  margin-top: 0.5rem;
}

.course-target {
  display: inline-block;
  background-color: rgba(255, 255, 255, 0.2);
  padding: 0.25rem 0.75rem;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: bold;
  letter-spacing: 0.05em;
}

.course-body {
  padding: 2rem 1.75rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.course-body p {
  font-size: 0.95rem;
  color: var(--color-text);
  margin-bottom: 1.5rem;
}

.course-points {
  list-style: none;
  border-top: 1px dashed var(--color-border-light);
  padding-top: 1.25rem;
}

.course-points li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.75rem;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--color-primary-dark);
}

.course-points li:last-child {
  margin-bottom: 0;
}

.course-points li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-secondary);
  font-weight: 900;
}

/* --- Simulator Section --- */
.simulator-card {
  background-color: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border-light);
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  overflow: hidden;
}

@media (max-width: 992px) {
  .simulator-card {
    grid-template-columns: 1fr;
  }
}

.simulator-inputs {
  padding: 3rem 2.5rem;
}

.simulator-outputs {
  background-color: var(--color-primary-dark);
  color: white;
  padding: 3rem 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.simulator-outputs h3,
.simulator-outputs p,
.simulator-outputs span {
  color: white;
}

.sim-group {
  margin-bottom: 2.25rem;
}

.sim-group:last-child {
  margin-bottom: 0;
}

.sim-label {
  display: block;
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--color-primary-dark);
  margin-bottom: 1rem;
}

/* Form Elements inside Simulator */
.simulator-inputs select {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-bg-alt);
  color: var(--color-text);
  font-weight: 500;
  outline: none;
  min-height: 48px;
  cursor: pointer;
  transition: var(--transition-fast);
}

.simulator-inputs select:focus {
  border-color: var(--color-primary);
  background-color: white;
}

/* Radio Cards (週授業回数) */
.radio-card-grid-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

@media (max-width: 480px) {
  .radio-card-grid-row {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
}

.radio-card-label {
  cursor: pointer;
  display: block;
}

.radio-card-label input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.radio-card-content {
  border: 2px solid var(--color-border);
  background-color: white;
  padding: 1rem 0.5rem;
  border-radius: var(--radius-md);
  text-align: center;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
}

.radio-card-label input[type="radio"]:checked + .radio-card-content {
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
  color: var(--color-primary-dark);
}

.radio-card-label input[type="radio"]:focus-visible + .radio-card-content {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* Checkbox Cards (オプション) */
.checkbox-card-label {
  cursor: pointer;
  display: block;
}

.checkbox-card-label input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.checkbox-card-content {
  border: 2px solid var(--color-border-light);
  background-color: var(--color-bg-alt);
  padding: 1.25rem;
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  transition: var(--transition-fast);
}

.checkbox-title {
  font-weight: 800;
  font-size: 1rem;
  color: var(--color-primary-dark);
  margin-bottom: 0.25rem;
  position: relative;
  padding-left: 1.75rem;
}

.checkbox-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 3px;
  width: 18px;
  height: 18px;
  border: 2px solid var(--color-border);
  border-radius: 4px;
  background-color: white;
  transition: var(--transition-fast);
}

.checkbox-detail {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  padding-left: 1.75rem;
  line-height: 1.4;
}

.checkbox-card-label input[type="checkbox"]:checked + .checkbox-card-content {
  border-color: var(--color-accent);
  background-color: var(--color-accent-light);
}

.checkbox-card-label input[type="checkbox"]:checked + .checkbox-card-content .checkbox-title::before {
  border-color: var(--color-accent);
  background-color: var(--color-accent);
}

.checkbox-card-label input[type="checkbox"]:checked + .checkbox-card-content .checkbox-title::after {
  content: '✓';
  position: absolute;
  left: 3px;
  top: 1px;
  color: white;
  font-size: 14px;
  font-weight: bold;
}

.checkbox-card-label input[type="checkbox"]:focus-visible + .checkbox-card-content {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* Simulator Output Styles */
.output-title {
  font-size: 1.35rem;
  border-bottom: 2px solid rgba(255, 255, 255, 0.15);
  padding-bottom: 1rem;
  margin-bottom: 1.5rem;
}

.output-row {
  margin-bottom: 1.5rem;
}

.output-row.border-top {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.5rem;
}

.output-label {
  display: block;
  font-size: 0.85rem;
  color: var(--color-sky-light);
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
  font-weight: bold;
}

.output-price-box {
  display: flex;
  align-items: baseline;
}

.price-currency {
  font-size: 1.5rem;
  font-weight: 700;
}

.price-value {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
}

.price-period {
  font-size: 1rem;
  color: var(--color-sky-light);
  margin-left: 0.25rem;
}

.loan-conditions {
  font-size: 0.8rem;
  color: var(--color-sky-light);
  margin-top: 0.5rem;
}

.output-breakdown {
  background-color: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 1rem;
  font-size: 0.85rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.output-disclaimer {
  font-size: 0.75rem;
  color: var(--color-sky-light);
  line-height: 1.5;
  margin-bottom: 2rem;
}

.simulator-outputs .btn-primary {
  background-color: var(--color-secondary);
  color: white;
  box-shadow: 0 4px 15px rgba(249, 115, 22, 0.3);
}

.simulator-outputs .btn-primary:hover {
  background-color: var(--color-secondary-hover);
  box-shadow: 0 6px 20px rgba(249, 115, 22, 0.4);
}

@media (max-width: 576px) {
  .simulator-inputs {
    padding: 2rem 1.5rem;
  }
  .simulator-outputs {
    padding: 2rem 1.5rem;
  }
  .price-value {
    font-size: 2.25rem;
  }
}

/* --- FAQ Section (Accordion) --- */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background-color: white;
  border-radius: var(--radius-md);
  border: 2px solid var(--color-border-light);
  margin-bottom: 1rem;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-fast);
}

.faq-item:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
}

.faq-item[open] {
  border-color: var(--color-primary-light);
}

/* Summary layout */
.faq-question {
  padding: 1.25rem 1.5rem;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-primary-dark);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  list-style: none;
  outline: none;
  user-select: none;
}

.faq-question::-webkit-details-marker {
  display: none; /* Hide default safari marker */
}

/* Caret Icon */
.faq-icon {
  width: 24px;
  height: 24px;
  position: relative;
  flex-shrink: 0;
  margin-left: 1rem;
  transition: var(--transition-base);
}

.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  background-color: var(--color-primary);
  border-radius: 2px;
  transition: var(--transition-base);
}

/* Vertical bar */
.faq-icon::before {
  top: 4px;
  left: 11px;
  width: 2px;
  height: 16px;
}

/* Horizontal bar */
.faq-icon::after {
  top: 11px;
  left: 4px;
  width: 16px;
  height: 2px;
}

.faq-item[open] .faq-icon {
  transform: rotate(135deg);
}

.faq-item[open] .faq-icon::before,
.faq-item[open] .faq-icon::after {
  background-color: var(--color-secondary);
}

/* Animation wrapper for answer content */
.faq-answer-wrapper {
  padding: 0 1.5rem 1.5rem 1.5rem;
  border-top: 1px dashed var(--color-border-light);
  background-color: var(--color-bg-alt);
}

.faq-answer {
  padding-top: 1rem;
  font-size: 0.95rem;
  color: var(--color-text);
  line-height: 1.8;
}

.faq-question:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: -2px;
}

/* --- Access Info & Map --- */
.info-flex {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: flex-start;
}

@media (max-width: 992px) {
  .info-flex {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

.info-details {
  background-color: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border-light);
  overflow: hidden;
}

.info-table {
  width: 100%;
  border-collapse: collapse;
}

.info-table th,
.info-table td {
  padding: 1.25rem 1.5rem;
  text-align: left;
}

.info-table tr {
  border-bottom: 1px solid var(--color-border-light);
}

.info-table tr:last-child {
  border-bottom: none;
}

.info-table th {
  background-color: var(--color-bg-alt);
  color: var(--color-primary-dark);
  font-weight: 800;
  width: 32%;
  white-space: nowrap;
}

.info-table td {
  color: var(--color-text);
  font-weight: 500;
}

@media (max-width: 576px) {
  .info-table th,
  .info-table td {
    padding: 1rem;
    font-size: 0.9rem;
  }
  .info-table th {
    width: auto;
    display: block;
    border-bottom: 1px dashed var(--color-border-light);
  }
  .info-table td {
    display: block;
  }
}

.info-map {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.map-svg {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 3px solid white;
}

.map-link-container {
  display: flex;
}

.map-link-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 0.75rem;
  background-color: white;
  border: 2px solid var(--color-border);
  color: var(--color-text);
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: var(--radius-md);
}

.map-link-btn:hover {
  background-color: var(--color-bg-alt);
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
}

/* --- Contact Section & Form --- */
.contact-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 3rem;
  align-items: flex-start;
}

@media (max-width: 992px) {
  .contact-layout {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

.contact-info-col {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.contact-lead-box {
  background-color: var(--color-primary-light);
  padding: 2.5rem 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(29, 78, 216, 0.15);
}

.contact-lead-box h3 {
  font-size: 1.25rem;
  margin-bottom: 1.25rem;
}

.tel-number {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  margin-bottom: 0.25rem;
}

.tel-hours {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
}

.tel-desc {
  font-size: 0.9rem;
  color: var(--color-text);
  line-height: 1.6;
}

.contact-notice-box {
  background-color: var(--color-bg-accent);
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(249, 115, 22, 0.15);
}

.contact-notice-box h3 {
  font-size: 1.1rem;
  color: var(--color-secondary-hover);
  margin-bottom: 1rem;
}

.contact-notice-box p {
  font-size: 0.875rem;
  color: var(--color-text);
  line-height: 1.6;
}

/* Form Styles */
.contact-form-col {
  background-color: white;
  padding: 3rem 2.5rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border-light);
}

@media (max-width: 576px) {
  .contact-form-col {
    padding: 2rem 1.5rem;
  }
}

.form-group {
  margin-bottom: 1.75rem;
  position: relative;
}

.form-label, .form-label-header {
  display: block;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-primary-dark);
  margin-bottom: 0.5rem;
}

.form-field-hint {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
  margin-top: -0.25rem;
}

/* Input & Select */
.contact-form-col input[type="text"],
.contact-form-col input[type="email"],
.contact-form-col input[type="tel"],
.contact-form-col input[type="date"],
.contact-form-col select,
.contact-form-col textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  font-size: 1rem;
  font-family: var(--font-sans);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-bg-alt);
  color: var(--color-text);
  transition: var(--transition-fast);
  outline: none;
  min-height: 48px;
}

.contact-form-col textarea {
  resize: vertical;
}

.contact-form-col input:focus,
.contact-form-col select:focus,
.contact-form-col textarea:focus {
  border-color: var(--color-primary);
  background-color: white;
}

/* Radio Group (Purpose) */
.form-radio-group {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.form-radio-label {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  padding: 0.5rem 0.75rem;
  border: 2px solid var(--color-border-light);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
}

.form-radio-label:hover {
  background-color: var(--color-bg-alt);
}

.form-radio-label input[type="radio"] {
  accent-color: var(--color-primary);
  margin-top: 0.3rem;
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* checked purpose border highlights */
.form-radio-label:has(input[type="radio"]:checked) {
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
  color: var(--color-primary-dark);
}

.form-radio-label:focus-within {
  outline: 3px solid var(--color-primary);
  outline-offset: 1px;
}

/* Dynamic field transitions */
.trial-only-fields, .document-only-fields {
  transition: opacity 0.3s ease, transform 0.3s ease;
}

/* Checkbox Row (Subjects) */
.form-checkbox-group-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.form-checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.5rem 1rem;
  background-color: var(--color-bg-alt);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  user-select: none;
  min-height: 40px;
}

.form-checkbox-label input[type="checkbox"] {
  accent-color: var(--color-accent);
  width: 18px;
  height: 18px;
}

.form-checkbox-label:has(input[type="checkbox"]:checked) {
  background-color: var(--color-accent-light);
  border-color: var(--color-accent);
  color: var(--color-primary-dark);
}

.form-checkbox-label:focus-within {
  outline: 3px solid var(--color-accent);
  outline-offset: 1px;
}

/* Date/Time Row Layout */
.date-time-flex {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.date-time-flex:last-of-type {
  margin-bottom: 0;
}

/* Custom Calendar Banner */
.calendar-assist-banner {
  background-color: var(--color-error-light);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: var(--color-error);
  border-radius: var(--radius-md);
  padding: 1rem;
  font-size: 0.85rem;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.calendar-assist-banner::before {
  content: '⚠';
  font-size: 1.25rem;
}

/* --- Form Constraint Validation Styles (:user-invalid) --- */
.contact-form-col input:focus-visible,
.contact-form-col select:focus-visible,
.contact-form-col textarea:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

.error-message {
  display: none;
  color: var(--color-error);
  font-size: 0.8rem;
  font-weight: 700;
  margin-top: 0.35rem;
}

/* HTML5 native validation triggers */
.contact-form-col input:not(:placeholder-shown):invalid,
.contact-form-col textarea:not(:placeholder-shown):invalid,
.contact-form-col select:invalid {
  border-color: var(--color-error);
  background-color: var(--color-error-light);
}

/* User invalid standard CSS */
.contact-form-col input:user-invalid,
.contact-form-col textarea:user-invalid,
.contact-form-col select:user-invalid {
  border-color: var(--color-error);
  background-color: var(--color-error-light);
}

/* Show error messages next to user-invalid controls */
.contact-form-col input:user-invalid ~ .error-message,
.contact-form-col textarea:user-invalid ~ .error-message,
.contact-form-col select:user-invalid ~ .error-message {
  display: block;
}

/* When form-group has dynamic active error class from JS */
.form-group.has-error input,
.form-group.has-error select,
.form-group.has-error textarea {
  border-color: var(--color-error);
  background-color: var(--color-error-light);
}

.form-group.has-error .error-message {
  display: block;
}

/* --- Footer --- */
.footer {
  background-color: var(--color-primary-dark);
  color: white;
  padding-top: 4.5rem;
  padding-bottom: 2rem;
}

.footer h3,
.footer p,
.footer a,
.footer span {
  color: white;
}

.footer-container {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 1fr;
  gap: 4rem;
  margin-bottom: 3rem;
}

@media (max-width: 992px) {
  .footer-container {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}

.footer-brand {
  max-width: 400px;
}

.footer-logo {
  margin-bottom: 1.5rem;
}

.footer-logo .logo-text {
  color: rgba(255, 255, 255, 0.7);
}

.footer-desc {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.7;
}

.footer-nav-title {
  font-size: 1.15rem;
  margin-bottom: 1.5rem;
  position: relative;
  padding-bottom: 0.5rem;
  font-weight: 800;
}

.footer-nav-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 3px;
  background-color: var(--color-secondary);
}

.footer-nav-links {
  list-style: none;
}

.footer-nav-links li {
  margin-bottom: 0.75rem;
}

.footer-nav-links a {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.8);
  font-weight: 600;
  transition: var(--transition-fast);
}

.footer-nav-links a:hover {
  color: var(--color-secondary);
  padding-left: 0.25rem;
}

.footer-contact-info p {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 0.75rem;
}

/* Bottom Footer */
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 2rem;
}

.footer-bottom-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.copyright {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
}

.footer-a11y-msg {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.5);
  max-width: 500px;
}

@media (max-width: 768px) {
  .footer-bottom-container {
    flex-direction: column;
    text-align: center;
  }
}

/* --- Native Dialog / Modal --- */
.dialog-modal {
  border: none;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  max-width: 500px;
  width: 90%;
  margin: auto;
  padding: 0;
  overflow: hidden;
  outline: none;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.3s ease, transform 0.3s ease, display 0.3s ease allow-discrete;
}

.dialog-modal[open] {
  opacity: 1;
  transform: translateY(0);
}

@starting-style {
  .dialog-modal[open] {
    opacity: 0;
    transform: translateY(20px);
  }
}

.dialog-modal::backdrop {
  background-color: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity 0.3s ease, display 0.3s ease allow-discrete;
}

.dialog-modal[open]::backdrop {
  opacity: 1;
}

@starting-style {
  .dialog-modal[open]::backdrop {
    opacity: 0;
  }
}

.dialog-content {
  padding: 3rem 2rem;
  text-align: center;
  background-color: white;
}

.dialog-icon-success {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: var(--color-accent-light);
  color: var(--color-accent);
  font-size: 2rem;
  font-weight: bold;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem auto;
  border: 2px solid rgba(16, 185, 129, 0.25);
}

.dialog-title {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.dialog-desc {
  font-size: 0.95rem;
  color: var(--color-text);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.dialog-sub-desc {
  background-color: var(--color-bg-alt);
  border-radius: var(--radius-md);
  padding: 1rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  margin-bottom: 2rem;
  border: 1px solid var(--color-border-light);
}

.dialog-modal .btn {
  width: 100%;
}

/* Utilities */
.text-white {
  color: white !important;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}