/* ==========================================================================
   Epson Software Updater - Official Support Theme
   Matching Epson Official Portal Design & Typography
   ========================================================================== */

:root {
  --epson-blue: #003399;
  --epson-blue-dark: #002277;
  --epson-blue-light: #e8f0fe;
  --epson-blue-hover: #002c85;
  --epson-accent: #0066cc;
  --text-main: #1f2937;
  --text-muted: #4b5563;
  --text-light: #6b7280;
  --bg-light: #f8fafc;
  --bg-card: #ffffff;
  --border-color: #e5e7eb;
  --border-focus: #93c5fd;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 25px rgba(0, 51, 153, 0.12);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text-main);
  background-color: #ffffff;
  line-height: 1.65;
  padding-bottom: 80px; /* Space for sticky ad bar */
}

/* ---------------- Navbar ---------------- */
.epson-navbar {
  background-color: var(--epson-blue) !important;
  box-shadow: 0 2px 10px rgba(0, 34, 102, 0.25);
  padding: 0.65rem 0;
  transition: all 0.2s ease-in-out;
}

.epson-navbar .navbar-brand {
  font-weight: 700;
  font-size: 1.25rem;
  color: #ffffff !important;
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: -0.2px;
}

.epson-navbar .nav-link {
  color: rgba(255, 255, 255, 0.9) !important;
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.5rem 0.85rem !important;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
}

.epson-navbar .nav-link:hover,
.epson-navbar .nav-link:focus,
.epson-navbar .nav-link.active {
  color: #ffffff !important;
  background-color: rgba(255, 255, 255, 0.15);
}

.epson-navbar .dropdown-menu {
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  font-size: 0.9rem;
}

.epson-navbar .dropdown-item:hover,
.epson-navbar .dropdown-item:focus {
  background-color: var(--epson-blue-light);
  color: var(--epson-blue);
}

/* ---------------- Hero & Header ---------------- */
.hero-header {
  padding: 45px 0 20px;
  text-align: center;
}

.hero-title {
  font-size: calc(1.75rem + 1vw);
  font-weight: 800;
  color: #0f172a;
  letter-spacing: -0.5px;
  margin-bottom: 12px;
}

.hero-subtitle {
  font-size: 1.12rem;
  color: var(--text-muted);
  max-width: 780px;
  margin: 0 auto 16px;
  line-height: 1.6;
}

.alert-notice {
  background-color: #f0f7ff;
  border-left: 4px solid var(--epson-blue);
  color: #1e3a8a;
  padding: 14px 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  max-width: 820px;
  margin: 20px auto;
  font-size: 0.97rem;
  text-align: left;
  box-shadow: var(--shadow-sm);
}

.alert-notice a {
  color: var(--epson-blue);
  font-weight: 600;
  text-decoration: underline;
}

/* ---------------- Download Cards Section ---------------- */
.download-tiles-container {
  display: flex;
  justify-content: center;
  align-items: stretch;
  gap: 24px;
  flex-wrap: wrap;
  margin: 32px auto 20px;
  max-width: 880px;
}

.download-tile {
  flex: 1 1 360px;
  max-width: 420px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  text-align: center;
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  position: relative;
  overflow: hidden;
}

.download-tile::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--epson-blue), var(--epson-accent));
  opacity: 0;
  transition: opacity 0.25s ease;
}

.download-tile:hover {
  transform: translateY(-4px);
  border-color: var(--epson-blue);
  box-shadow: var(--shadow-lg);
}

.download-tile:hover::before {
  opacity: 1;
}

.tile-icon-wrapper {
  margin-bottom: 16px;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 64px;
}

.tile-icon-wrapper img,
.tile-icon-wrapper svg {
  height: 52px;
  width: auto;
  object-fit: contain;
}

.tile-os-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 6px;
}

.tile-os-subtitle {
  font-size: 0.92rem;
  color: var(--text-light);
  margin-bottom: 22px;
  min-height: 44px;
}

.tile-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}

.btn-epson-download {
  background-color: var(--epson-blue);
  color: #ffffff !important;
  font-weight: 600;
  font-size: 1.05rem;
  padding: 12px 32px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  max-width: 280px;
  box-shadow: 0 2px 6px rgba(0, 51, 153, 0.3);
  transition: all 0.2s ease;
  border: none;
}

.btn-epson-download:hover {
  background-color: var(--epson-blue-hover);
  color: #ffffff !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 51, 153, 0.4);
}

.link-instructions {
  color: var(--epson-blue);
  font-weight: 600;
  font-size: 0.92rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color 0.15s ease;
}

.link-instructions:hover {
  color: var(--epson-blue-hover);
  text-decoration: underline;
}

.license-disclaimer {
  text-align: center;
  font-size: 0.88rem;
  color: var(--text-light);
  max-width: 780px;
  margin: 12px auto 25px;
}

.license-disclaimer a {
  color: var(--epson-blue);
  text-decoration: underline;
}

/* ---------------- Trust Badges & Checksum ---------------- */
.trust-badge-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin: 16px auto 30px;
  max-width: 880px;
}

.trust-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 0.85rem;
  font-weight: 600;
  color: #1e293b;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  padding: 6px 14px;
  border-radius: 20px;
  box-shadow: var(--shadow-sm);
}

.trust-badge svg {
  color: #16a34a;
}

.hash-code {
  font-family: SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.82rem;
  background: #f1f5f9;
  padding: 3px 8px;
  border-radius: 4px;
  color: #0f172a;
  word-break: break-all;
  display: inline-block;
}

/* Section Mini Badges */
.section-badge {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--epson-blue);
  background: var(--epson-blue-light);
  padding: 4px 12px;
  border-radius: 12px;
  margin-bottom: 6px;
}

/* ---------------- SEO Content Sections ---------------- */
.content-wrapper {
  max-width: 980px;
  margin: 0 auto;
  padding: 10px 15px 40px;
}

.content-section {
  margin-bottom: 48px;
}

.section-heading {
  font-size: 1.7rem;
  font-weight: 700;
  color: #0f172a;
  margin-top: 36px;
  margin-bottom: 18px;
  padding-bottom: 8px;
  border-bottom: 2px solid #e2e8f0;
  position: relative;
}

.section-heading::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 60px;
  height: 2px;
  background-color: var(--epson-blue);
}

.section-subheading {
  font-size: 1.25rem;
  font-weight: 600;
  color: #1e293b;
  margin-top: 24px;
  margin-bottom: 12px;
}

/* Feature Cards Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin: 24px 0;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 22px;
  box-shadow: var(--shadow-sm);
  transition: all 0.25s ease;
  border-top: 3px solid transparent;
}

.feature-card:hover {
  border-top-color: var(--epson-blue);
  border-color: var(--border-focus);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background-color: var(--epson-blue-light);
  color: var(--epson-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 14px;
}

.feature-card h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #0f172a;
}

.feature-card p {
  font-size: 0.93rem;
  color: var(--text-muted);
  margin-bottom: 0;
  line-height: 1.55;
}

/* Tables */
.epson-table {
  width: 100%;
  margin: 20px 0;
  border-collapse: separate;
  border-spacing: 0;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.epson-table thead th {
  background-color: var(--epson-blue);
  color: #ffffff;
  font-weight: 600;
  padding: 12px 16px;
  font-size: 0.95rem;
  text-align: left;
  border: none;
}

.epson-table tbody td {
  padding: 12px 16px;
  font-size: 0.92rem;
  border-top: 1px solid var(--border-color);
  color: var(--text-main);
}

.epson-table tbody tr:nth-child(even) {
  background-color: var(--bg-light);
}

.epson-table tbody tr:hover {
  background-color: #f1f5f9;
}

/* Steps List */
.steps-container {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 22px 0;
}

.step-item {
  display: flex;
  gap: 16px;
  background: var(--bg-light);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  border-left: 4px solid var(--epson-blue);
  transition: all 0.2s ease;
}

.step-item:hover {
  box-shadow: var(--shadow-sm);
  background: #ffffff;
}

.step-number {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--epson-blue);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
}

.step-content h5 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: #0f172a;
}

.step-content p {
  font-size: 0.93rem;
  color: var(--text-muted);
  margin-bottom: 0;
}

/* Device Badges */
.device-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0;
}

.device-badge {
  background-color: var(--epson-blue-light);
  color: var(--epson-blue);
  font-size: 0.88rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 20px;
  border: 1px solid #bfdbfe;
  transition: all 0.15s ease;
}

.device-badge:hover {
  background-color: #dbeafe;
  transform: translateY(-1px);
}

/* FAQ Accordion */
.faq-accordion .accordion-item {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm) !important;
  margin-bottom: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.faq-accordion .accordion-button {
  font-weight: 600;
  font-size: 1rem;
  color: #0f172a;
  background-color: #ffffff;
  padding: 16px 20px;
  transition: all 0.2s ease;
}

.faq-accordion .accordion-button:not(.collapsed) {
  color: var(--epson-blue);
  background-color: var(--epson-blue-light);
  box-shadow: inset 0 -1px 0 rgba(0,0,0,0.08);
}

.faq-accordion .accordion-button:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 0.2rem rgba(0, 51, 153, 0.15);
}

.faq-accordion .accordion-body {
  font-size: 0.94rem;
  color: var(--text-muted);
  line-height: 1.65;
  background-color: #ffffff;
  padding: 18px 20px;
}

/* Troubleshooting Cards */
.trouble-card {
  border-left: 4px solid #ef4444;
  background-color: var(--bg-card);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  border-top: 1px solid var(--border-color);
  border-right: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  padding: 20px 22px;
  margin-bottom: 18px;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
}

.trouble-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(2px);
}

.trouble-card h5 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #991b1b;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.trouble-solution {
  background-color: #f8fafc;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  margin-top: 10px;
  font-size: 0.92rem;
}

.trouble-solution strong {
  color: #166534;
}

/* ---------------- Footer ---------------- */
.epson-footer {
  background-color: #002266;
  color: rgba(255, 255, 255, 0.85);
  padding: 32px 0 20px;
  font-size: 0.9rem;
}

.epson-footer a {
  color: #ffffff;
  text-decoration: none;
  transition: color 0.15s ease;
}

.epson-footer a:hover {
  color: #93c5fd;
  text-decoration: underline;
}

.epson-footer .footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-bottom: 16px;
  padding: 0;
  list-style: none;
}

.epson-footer .disclaimer {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.65);
  max-width: 820px;
  margin: 14px auto 0;
  line-height: 1.5;
  text-align: center;
}

/* ---------------- Responsive Tweaks ---------------- */
@media (max-width: 768px) {
  .download-tile {
    flex: 1 1 100%;
    max-width: 100%;
  }

  .section-heading {
    font-size: 1.45rem;
  }

  .hero-title {
    font-size: 1.75rem;
  }
}