/* ---
--- Universal SKILL.md Styles
--- */

:root {
    --primary-color: #FF6B35; /* Safety Orange */
    --secondary-color: #004E89; /* Industrial Blue */
    --accent-color: #F7B801; /* Warning Yellow */

    --status-compatible: #00AA44;
    --status-conditional: #FFB800;
    --status-incompatible: #DC3545;
    
    --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);

    /* Light Theme */
    --bg-color-light: #f4f5f7;
    --surface-color-light: #ffffff;
    --text-primary-light: #121212;
    --text-secondary-light: #555;
    --border-color-light: #e0e0e0;

    /* Dark Theme - Enhanced Contrast */
    --bg-color-dark: #0d0d0d;
    --surface-color-dark: #1a1a1a;
    --text-primary-dark: #f0f0f0;
    --text-secondary-dark: #b8b8b8;
    --border-color-dark: #3a3a3a;

    /* Dark Theme Shadows */
    --shadow-sm-dark: 0 1px 3px rgba(0,0,0,0.5);
    --shadow-md-dark: 0 4px 6px -1px rgba(0,0,0,0.6), 0 2px 4px -1px rgba(0,0,0,0.4);

    /* Transition timings */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

body {
    font-family: var(--font-family-sans);
    margin: 0;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Skip to content link for accessibility */
.skip-to-content {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--primary-color);
    color: white;
    padding: 0.75rem 1.5rem;
    text-decoration: none;
    font-weight: 600;
    z-index: 10000;
    border-radius: 0 0 var(--border-radius-md) 0;
}

.skip-to-content:focus {
    top: 0;
    outline: 3px solid var(--accent-color);
    outline-offset: 2px;
}

/* Enhanced focus indicators */
*:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
    border-radius: var(--border-radius-sm);
}

.button:focus-visible,
.tab-nav__button:focus-visible,
.header__action-btn:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 3px;
}

.combobox__input:focus-visible,
.styled-input:focus-visible,
.styled-select:focus-visible,
.styled-textarea:focus-visible {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.3);
}

.combobox__item:focus {
    background-color: rgba(255, 107, 53, 0.1);
    outline: 2px solid var(--primary-color);
    outline-offset: -2px;
}

body.light-mode {
    background-color: var(--bg-color-light);
    color: var(--text-primary-light);
    --bg-color: var(--bg-color-light);
    --surface-color: var(--surface-color-light);
    --text-primary: var(--text-primary-light);
    --text-secondary: var(--text-secondary-light);
    --border-color: var(--border-color-light);
    --shadow-current: var(--shadow-md);
}

body.dark-mode {
    background-color: var(--bg-color-dark);
    color: var(--text-primary-dark);
    --bg-color: var(--bg-color-dark);
    --surface-color: var(--surface-color-dark);
    --text-primary: var(--text-primary-dark);
    --text-secondary: var(--text-secondary-dark);
    --border-color: var(--border-color-dark);
    --shadow-current: var(--shadow-md-dark);
}

/* Global transitions for theme switching */
* {
    transition-property: background-color, border-color, color, box-shadow;
    transition-duration: var(--transition-normal);
    transition-timing-function: ease;
}

/* Dark mode specific improvements */
body.dark-mode .combobox__input,
body.dark-mode .styled-input,
body.dark-mode .styled-select,
body.dark-mode .styled-textarea {
    background-color: #252525;
    border-color: var(--border-color-dark);
    color: var(--text-primary-dark);
}

body.dark-mode .combobox__input:focus,
body.dark-mode .styled-input:focus,
body.dark-mode .styled-select:focus,
body.dark-mode .styled-textarea:focus {
    border-color: var(--primary-color);
    background-color: #2a2a2a;
    box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.2);
}

body.dark-mode .result-card,
body.dark-mode .compat-item-card,
body.dark-mode .alternative-card {
    background-color: var(--surface-color-dark);
    box-shadow: var(--shadow-md-dark);
    border-color: var(--border-color-dark);
}

body.dark-mode .tab-nav__button {
    color: var(--text-secondary-dark);
}

body.dark-mode .tab-nav__button:hover {
    background-color: rgba(255, 107, 53, 0.1);
    color: var(--primary-color);
}

body.dark-mode .tab-nav__button--active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

body.dark-mode .disclaimer {
    background-color: var(--surface-color-dark);
    border-color: var(--border-color-dark);
}

body.dark-mode .comparison-table th {
    background-color: #151515;
}

body.dark-mode .comparison-table td:first-child {
    background-color: #151515;
}

body.dark-mode .price-tier {
    opacity: 0.95;
}

/* Improved hover states for dark mode */
body.dark-mode .button:hover,
body.dark-mode .header__action-btn:hover,
body.dark-mode .social-share-btn:hover {
    box-shadow: var(--shadow-md-dark);
}

/* --- Header --- */
/* === HEADER STYLES === */
.equip-checker__header {
  padding: 1.5rem 1rem;
  border-bottom: 2px solid var(--primary-color);
  margin-bottom: 2rem;
  background: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 100%);
  border-radius: 8px 8px 0 0;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.equip-checker__header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  max-width: 1400px;
  margin: 0 auto;
}

.equip-checker__logo-container {
  flex-shrink: 0;
}

.equip-checker__logo {
  height: 60px;
  width: auto;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

.equip-checker__title-group {
  flex: 1;
  text-align: center;
  min-width: 250px;
}

.equip-checker__title {
  font-size: 2rem;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.2;
  margin-bottom: 0.5rem;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.equip-checker__subtitle {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 400;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

/* Header Buttons Container */
.equip-checker__header-buttons {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  flex-shrink: 0;
}

/* Embed Button */
.equip-checker__embed-button {
  background: rgba(255, 255, 255, 0.2);
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-radius: 8px;
  padding: 0.5rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
  color: #ffffff;
  font-weight: 700;
  font-size: 1rem;
}

.equip-checker__embed-button:hover {
  background: rgba(255, 255, 255, 0.3);
  border-color: rgba(255, 255, 255, 0.6);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.equip-checker__embed-button:active {
  transform: translateY(0);
}

/* Ko-fi Button */
.equip-checker__kofi-button {
  background: rgba(255, 255, 255, 0.2);
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-radius: 8px;
  padding: 0.5rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
  color: #ffffff;
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
}

.equip-checker__kofi-button:hover {
  background: rgba(255, 255, 255, 0.3);
  border-color: rgba(255, 255, 255, 0.6);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* Dark Mode Toggle */
.equip-checker__dark-mode-toggle {
  background: rgba(255, 255, 255, 0.2);
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-radius: 50%;
  padding: 0.75rem;
  cursor: pointer;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
  color: #ffffff;
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.equip-checker__dark-mode-toggle:hover {
  background: rgba(255, 255, 255, 0.3);
  border-color: rgba(255, 255, 255, 0.6);
  transform: translateY(-2px) rotate(20deg);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.embed-icon, .kofi-icon, .dark-mode-icon {
  font-size: 20px;
}

.embed-text, .kofi-text {
  white-space: nowrap;
}

/* Hide button text on small screens */
@media (max-width: 480px) {
  .embed-text, .kofi-text {
    display: none;
  }
}


/* === FOOTER STYLES === */
.equip-checker__footer {
  margin-top: 2rem;
  padding: 1.5rem 1rem;
  text-align: center;
  border-top: 2px solid var(--border-color);
  background: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 100%);
  border-radius: 0 0 8px 8px;
}

.equip-checker__branding {
  margin-bottom: 1rem;
}

.equip-checker__brand-text {
  font-size: 1.125rem;
  color: #ffffff;
  margin-bottom: 0.5rem;
}

.equip-checker__brand-text strong {
  font-weight: 700;
}

.equip-checker__brand-tagline {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.8);
}

.equip-checker__links {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.equip-checker__link {
  color: #ffffff;
  text-decoration: none;
  padding: 0.5rem 1rem;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 6px;
  transition: all 0.3s ease;
  font-weight: 500;
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.1);
}

.equip-checker__link:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.6);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.equip-checker__support {
  margin: 1.5rem 0;
  display: flex;
  justify-content: center;
  align-items: center;
}

.equip-checker__kofi {
  display: inline-block;
  transition: transform 0.3s ease, opacity 0.3s ease;
  opacity: 0.95;
}

.equip-checker__kofi:hover {
  transform: translateY(-3px) scale(1.08);
  opacity: 1;
}

.equip-checker__kofi-img {
  display: block;
  height: 70px;
  width: auto;
  border: 0;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
  transition: all 0.3s ease;
}

.equip-checker__kofi:hover .equip-checker__kofi-img {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.6);
}

/* Make Ko-fi button even bigger on desktop */
@media (min-width: 768px) {
  .equip-checker__kofi-img {
    height: 80px;
  }
}

/* Copyright */
.equip-checker__copyright {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.equip-checker__copyright p {
  font-size: 0.875rem;
  color: #000000;
  font-weight: 500;
  margin: 0;
}

/* Email Capture Section (inside footer) */
.equip-checker__email-section {
  margin: 2rem auto;
  padding: 2rem;
  max-width: 600px;
  background: linear-gradient(135deg, rgba(6, 147, 227, 0.15) 0%, rgba(155, 81, 224, 0.15) 100%);
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 8px;
  text-align: center;
}

.equip-checker__email-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 0.5rem;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.equip-checker__email-description {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 1.5rem;
}

.equip-checker__email-form {
  margin-bottom: 1rem;
}

.equip-checker__email-input-group {
  display: flex;
  gap: 0.5rem;
  max-width: 500px;
  margin: 0 auto;
  flex-wrap: wrap;
}

.equip-checker__email-input {
  flex: 1;
  min-width: 250px;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  border: 2px solid rgba(255, 255, 255, 0.5);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.9);
  color: #121212;
  transition: all 0.3s ease;
}

.equip-checker__email-input:focus {
  outline: none;
  border-color: #ffffff;
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
  background: #ffffff;
}

.equip-checker__email-submit {
  padding: 0.75rem 1.5rem;
  background: #ffffff;
  color: var(--primary-color);
  border: 2px solid #ffffff;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.equip-checker__email-submit:hover {
  background: var(--primary-color);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.equip-checker__email-success,
.equip-checker__email-error {
  margin-top: 1rem;
  padding: 0.75rem;
  border-radius: 6px;
  font-weight: 600;
}

.equip-checker__email-success {
  background: rgba(0, 170, 68, 0.2);
  color: #ffffff;
  border: 2px solid rgba(0, 170, 68, 0.5);
}

.equip-checker__email-error {
  background: rgba(220, 53, 69, 0.2);
  color: #ffffff;
  border: 2px solid rgba(220, 53, 69, 0.5);
}

.equip-checker__email-trust {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.8);
  margin-top: 1rem;
}

.equip-checker__email-trust span {
  white-space: nowrap;
}

/* === EMBED MODAL STYLES === */

/* Modal Container */
.equip-checker__modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 9999;
}

/* Modal Overlay */
.equip-checker__modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
}

/* Modal Content */
.equip-checker__modal-content {
  position: relative;
  max-width: 700px;
  max-height: 90vh;
  margin: 5vh auto;
  background: var(--bg-color);
  border: 2px solid var(--border-color);
  border-radius: 8px;
  padding: 2rem;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.8);
  animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Modal Close Button */
.equip-checker__modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: transparent;
  border: none;
  font-size: 36px;
  color: var(--text-secondary);
  cursor: pointer;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: all 0.3s ease;
}

.equip-checker__modal-close:hover {
  background: var(--card-bg);
  color: var(--primary-color);
  transform: rotate(90deg);
}

/* Modal Title */
.equip-checker__modal-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
  line-height: 1.2;
}

/* Modal Subtitle */
.equip-checker__modal-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

/* Modal Section */
.equip-checker__modal-section {
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.equip-checker__modal-section:last-child {
  border-bottom: none;
}

/* Modal Section Title */
.equip-checker__modal-section-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

/* Modal Description */
.equip-checker__modal-description {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

/* Code Container */
.equip-checker__code-container {
  background: var(--card-bg);
  border: 2px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem;
  position: relative;
}

/* Embed Code */
.equip-checker__embed-code {
  display: block;
  font-family: 'Courier New', monospace;
  font-size: 14px;
  color: var(--primary-color);
  background: transparent;
  padding: 0.5rem;
  border: none;
  word-wrap: break-word;
  white-space: pre-wrap;
  overflow-wrap: break-word;
  line-height: 1.6;
}

/* Copy Button */
.equip-checker__copy-button {
  margin-top: 1rem;
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--primary-color);
  color: #ffffff;
  border: none;
  border-radius: 6px;
  font-size: 1.125rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s ease;
}

.equip-checker__copy-button:hover {
  background: #0582c1;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(6, 147, 227, 0.4);
}

.equip-checker__copy-button:active {
  transform: translateY(0);
}

/* Success Message */
.equip-checker__success-message {
  margin-top: 0.5rem;
  padding: 0.75rem;
  background: rgba(46, 213, 115, 0.1);
  border: 1px solid #2ed573;
  border-radius: 6px;
  color: #2ed573;
  font-weight: 500;
  text-align: center;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Download Buttons */
.equip-checker__download-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.equip-checker__download-button {
  flex: 1;
  min-width: 200px;
  padding: 1rem;
  background: var(--accent-color);
  color: #ffffff;
  text-decoration: none;
  text-align: center;
  border-radius: 8px;
  font-weight: 700;
  font-size: 1rem;
  transition: all 0.3s ease;
  border: 2px solid transparent;
  display: block;
}

.equip-checker__download-button:hover {
  background: #8b4fc6;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(155, 81, 224, 0.4);
}

.equip-checker__download-button--secondary {
  background: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.equip-checker__download-button--secondary:hover {
  background: #0582c1;
  box-shadow: 0 4px 12px rgba(6, 147, 227, 0.4);
}

/* Mobile Responsive Modal */
@media (max-width: 768px) {
  .equip-checker__modal-content {
    margin: 2vh;
    padding: 1.5rem;
    max-height: 96vh;
  }

  .equip-checker__modal-title {
    font-size: 24px;
  }

  .equip-checker__download-buttons {
    flex-direction: column;
  }

  .equip-checker__download-button {
    width: 100%;
  }
}

/* ---
--- Tool-Specific Styles
--- */

.tool-container {
    max-width: 900px;
    margin: 2rem auto;
    padding: 0 1.5rem;
}
.tool-header { text-align: center; margin-bottom: 2rem; }
.tool-header h1 { margin: 0 0 0.5rem; font-size: 2.5rem; color: var(--text-primary); }
.tool-subtitle { font-size: 1.1rem; color: var(--text-secondary); margin: 0; }

/* --- Tabs --- */
.tab-nav {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 2rem;
    overflow-x: auto;
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: var(--primary-color) var(--border-color);
    position: relative;
}
.tab-nav::-webkit-scrollbar {
    height: 4px;
}
.tab-nav::-webkit-scrollbar-track {
    background: var(--border-color);
}
.tab-nav::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 2px;
}
.tab-nav::before,
.tab-nav::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 30px;
    pointer-events: none;
    z-index: 1;
    display: none;
}
.tab-nav::before {
    left: 0;
    background: linear-gradient(to right, var(--bg-color), transparent);
}
.tab-nav::after {
    right: 0;
    background: linear-gradient(to left, var(--bg-color), transparent);
}
@media (max-width: 768px) {
    .tab-nav::before,
    .tab-nav::after {
        display: block;
    }
}
.tab-nav__button {
    padding: 0.75rem 1rem;
    border: none;
    background: none;
    cursor: pointer;
    font-size: 1rem;
    color: var(--text-secondary);
    border-bottom: 2px solid transparent;
    margin-bottom: -1px; /* Overlap border */
    white-space: nowrap;
}
.tab-nav__button:hover {
    background-color: var(--bg-color);
    color: var(--text-primary);
}
.tab-nav__button--active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    font-weight: 600;
}
.tab-description {
    text-align: center;
    font-size: 1rem;
    color: var(--text-secondary);
    margin: -1rem auto 2rem;
    max-width: 600px;
}

/* --- Forms & Inputs --- */
.styled-select, .styled-input, .styled-textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    background-color: var(--surface-color);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
}
.styled-textarea { resize: vertical; }
.form-group { margin-bottom: 1rem; }
.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

/* --- Buttons --- */
.button {
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-md);
    border: none;
    font-weight: 600;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}
.button--primary {
    background-color: var(--primary-color);
    color: white;
    box-shadow: 0 2px 8px rgba(255, 107, 53, 0.3);
}
.button--secondary {
    background-color: var(--secondary-color);
    color: white;
    box-shadow: 0 2px 8px rgba(0, 78, 137, 0.3);
}
.button--large { width: 100%; margin-top: 1rem; padding: 1rem; font-size: 1.1rem; }
.button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}
.button:active { transform: translateY(0); }

/* Button shine effect */
.button::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent 30%,
        rgba(255, 255, 255, 0.1) 50%,
        transparent 70%
    );
    transform: rotate(45deg);
    animation: buttonShine 3s ease-in-out infinite;
}
@keyframes buttonShine {
    0%, 100% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    50% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}


/* --- Searchable Combobox --- */
.combobox-wrapper { position: relative; }
.combobox__input { width: 100%; padding-right: 2.5rem; }
.combobox__clear {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    line-height: 1;
    transition: all 0.2s;
}
.combobox__clear:hover {
    background: var(--border-color);
    color: var(--status-incompatible);
}
.combobox__clear.active {
    display: flex;
}
.combobox__list {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    z-index: 100;
    max-height: 250px;
    overflow-y: auto;
    padding: 0.5rem 0;
    list-style: none;
    margin: 0;
    box-shadow: var(--shadow-md);
    display: none;
}
.combobox__item {
    display: flex;
    align-items: center;
    padding: 0.5rem 1rem;
    cursor: pointer;
    gap: 0.75rem;
}
.combobox__item:hover, .combobox__item--active { background-color: var(--bg-color); }
.combobox__item-img { width: 40px; height: 40px; object-fit: contain; }
.combobox__item-text { flex-grow: 1; }
.combobox__item-brand { display: block; font-size: 0.8rem; color: var(--text-secondary); }
.combobox__item-model { font-weight: 500; }
.combobox__item--no-results { color: var(--text-secondary); font-style: italic; cursor: default; }
.combobox__item--header {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: default;
    background: var(--bg-color);
}
.combobox__item--header:hover {
    background: var(--bg-color);
}
.combobox__item--recent {
    padding: 0.5rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
}
.combobox__recent-icon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    opacity: 0.6;
}
.combobox__recent-text {
    flex: 1;
    font-size: 0.9rem;
}
.combobox__divider {
    height: 1px;
    background: var(--border-color);
    margin: 0.5rem 0;
    cursor: default;
}
.combobox__divider:hover {
    background: var(--border-color);
}
.price-tier { font-weight: 600; font-size: 0.9rem; }
.price-tier--low { color: var(--status-compatible); }
.price-tier--mid { color: var(--status-conditional); }
.price-tier--high { color: var(--status-incompatible); }

/* --- Status Badges --- */
.status-badge {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-left: 0.5rem;
}
.status-badge--new {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    animation: pulse 2s ease-in-out infinite;
}
.status-badge--popular {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
}
.status-badge--recommended {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: white;
}
@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.9; transform: scale(1.05); }
}


/* --- Compatibility Checker Tab --- */
.compatibility-checker {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
}
.component-selector { flex: 1; text-align: center; }
.component-selector h3 { margin: 0 0 1rem; }
.connector-icon svg {
    width: 48px;
    height: 48px;
    color: var(--secondary-color);
    background: var(--bg-color);
    border-radius: 50%;
    padding: 8px;
}

/* --- Result Display --- */
.result-container {
    margin-top: 2rem;
    animation: fadeInUp 0.5s ease-out;
}
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
.result-card {
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    border: 1px solid transparent;
    animation: scaleIn 0.4s ease-out;
}
@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}
.result--compatible { background-color: #e9f7ec; border-color: #b7e4c7; color: #1a682c; }
.result--conditional { background-color: #fff8e1; border-color: #ffecb3; color: #856404; }
.result--incompatible { background-color: #fdeaea; border-color: #f5c6cb; color: #721c24; }
.dark-mode .result--compatible { background-color: #1c3b24; border-color: #2f6b3d; color: #a6d9b5; }
.dark-mode .result--conditional { background-color: #3d341b; border-color: #7e6c38; color: #f5e0a0; }
.dark-mode .result--incompatible { background-color: #4a2125; border-color: #8b3d43; color: #f0b8bc; }
.result-card-header { font-size: 1.5rem; font-weight: 700; margin-bottom: 1rem; }
.result-card-notes ul { list-style: none; padding-left: 0; margin: 0; }
.result-card-notes li {
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(128,128,128,0.2);
}
.result-card-notes li:last-child { border-bottom: none; }

/* --- Alternative Recommendations --- */
.alternatives-section {
    margin-top: 2rem;
    padding: 1.5rem;
    background: var(--surface-color);
    border-radius: var(--border-radius-lg);
    border: 2px dashed var(--border-color);
}
.alternatives-title {
    margin: 0 0 0.5rem;
    font-size: 1.25rem;
    color: var(--text-primary);
}
.alternatives-subtitle {
    margin: 0 0 1rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}
.alternatives-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
}
.alternative-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1rem;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    transition: all 0.3s ease;
    cursor: pointer;
}
.alternative-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-color);
}
.alternative-card__img {
    width: 60px;
    height: 60px;
    object-fit: contain;
    margin-bottom: 0.75rem;
}
.alternative-card__info {
    text-align: center;
}
.alternative-card__brand {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}
.alternative-card__model {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}


/* --- Reverse Lookup & Build Setup --- */
.reverse-lookup-controls {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    align-items: flex-end;
}
.reverse-lookup-controls .combobox-wrapper { flex-grow: 1; }
.result-category { margin-bottom: 2rem; }
.result-category__title {
    font-size: 1.25rem;
    margin: 0 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}
.result-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
}
.compat-item-card {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 1rem;
    display: flex;
    gap: 1rem;
    align-items: center;
    transition: all 0.3s ease;
    cursor: pointer;
}
.compat-item-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
    border-color: var(--primary-color);
}
.compat-item-card__img { width: 50px; height: 50px; object-fit: contain; }
.compat-item-card__info { flex-grow: 1; }
.compat-item-card__brand { font-size: 0.8rem; color: var(--text-secondary); display: block; }
.compat-item-card__model { font-weight: 600; }
.compat-item-card__reason {
    font-size: 0.8rem;
    padding: 0.25rem 0.5rem;
    background-color: var(--status-compatible);
    color: white;
    border-radius: var(--border-radius-sm);
    grid-column: 1 / -1;
    margin-top: 0.5rem;
    text-align: center;
}
.dark-mode .compat-item-card__reason { background-color: #1c3b24; color: #a6d9b5; border: 1px solid #2f6b3d; }

.build-filters {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    align-items: flex-end;
}
.build-filters .filter-group {
    flex: 1;
    min-width: 200px;
}
.build-setup-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}
.full-setup-summary {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin: 1.5rem 0;
}
.summary-item { display: flex; align-items: center; gap: 0.75rem; background: var(--bg-color); padding: 0.5rem; border-radius: var(--border-radius-md); }
.summary-item img { width: 40px; height: 40px; object-fit: contain; }
.result-cost {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 1.5rem 0;
    padding: 1rem;
    background: var(--bg-color);
    border-radius: var(--border-radius-md);
}
.result-cost strong { color: var(--secondary-color); }
.dark-mode .result-cost strong { color: #8cb9de; }

.result-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 1.5rem;
}
.action-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.2rem;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
    background-color: var(--surface-color);
    color: var(--text-primary);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}
.action-button:hover {
    background-color: var(--bg-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}
.action-button svg { width: 20px; height: 20px; }

.action-button--image {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-color: transparent;
}

.action-button--image:hover {
    background: linear-gradient(135deg, #5568d3 0%, #63408a 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(102, 126, 234, 0.3);
}

/* --- Connection Diagram --- */
.connection-diagram-section {
    margin: 1.5rem 0;
}

.diagram-toggle-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, var(--secondary-color), #006bb3);
    color: white;
    border: none;
    border-radius: var(--border-radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 1rem;
    width: 100%;
    justify-content: center;
}

.diagram-toggle-btn:hover {
    background: linear-gradient(135deg, #003a5d, #005080);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 78, 137, 0.3);
}

.diagram-toggle-btn svg {
    width: 20px;
    height: 20px;
}

.connection-diagram-container {
    margin-top: 1.5rem;
    background: var(--surface-color);
    padding: 1.5rem;
    border-radius: var(--border-radius-lg);
    border: 2px solid var(--border-color);
    box-shadow: var(--shadow-md);
}

.connection-diagram-svg {
    width: 100%;
    height: auto;
    display: block;
}

.connection-diagram-svg text {
    font-family: var(--font-family-sans);
}

.diagram-node {
    transition: all var(--transition-fast);
}

.diagram-node:hover {
    filter: brightness(1.1);
}

.diagram-legend {
    opacity: 0.8;
}

body.dark-mode .connection-diagram-svg rect[fill="var(--surface-color)"] {
    fill: var(--surface-color-dark);
}

body.dark-mode .connection-diagram-svg text[fill="var(--text-primary)"] {
    fill: var(--text-primary-dark);
}

body.dark-mode .connection-diagram-svg text[fill="var(--text-secondary)"] {
    fill: var(--text-secondary-dark);
}

/* --- Performance: Loading Skeletons --- */
.skeleton {
    background: linear-gradient(90deg, var(--border-color) 25%, var(--surface-color) 50%, var(--border-color) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
    border-radius: var(--border-radius-sm);
}

@keyframes skeleton-loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

.skeleton-card {
    padding: 1.5rem;
    margin-bottom: 1rem;
    height: 200px;
}

.skeleton-text {
    height: 16px;
    margin-bottom: 0.75rem;
}

.skeleton-text--title {
    width: 60%;
    height: 24px;
}

.skeleton-text--subtitle {
    width: 40%;
}

.skeleton-image {
    width: 100%;
    height: 150px;
    margin-bottom: 1rem;
}

/* Lazy loading images - show placeholder while loading */
img[data-src] {
    background: var(--border-color);
    min-height: 100px;
}

img[data-src]::before {
    content: '';
    display: block;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, var(--border-color) 25%, var(--surface-color) 50%, var(--border-color) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
}

/* --- Favorites --- */
.favorite-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 0;
    z-index: 10;
}
.favorite-btn svg {
    width: 18px;
    height: 18px;
    fill: none;
    stroke: var(--text-secondary);
    stroke-width: 2px;
    transition: all 0.3s ease;
}
.favorite-btn--active svg {
    fill: #e74c3c;
    stroke: #e74c3c;
    animation: favoriteHeart 0.3s ease;
}
.favorite-btn:hover {
    transform: scale(1.1);
    background: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}
.favorite-btn:hover svg {
    stroke: #e74c3c;
}
@keyframes favoriteHeart {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

/* Favorite button in combobox items */
.combobox__item {
    position: relative;
    padding-right: 3rem;
}
.combobox__item .favorite-btn {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
}
.combobox__item:hover .favorite-btn {
    background: rgba(255, 255, 255, 0.9);
}

/* Favorite button in result cards */
.compat-item-card {
    position: relative;
}
.favorite-btn--card {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
}

/* Dark mode adjustments */
[data-theme="dark"] .favorite-btn {
    background: rgba(30, 30, 30, 0.9);
}
[data-theme="dark"] .favorite-btn:hover {
    background: rgba(40, 40, 40, 1);
}
[data-theme="dark"] .combobox__item .favorite-btn {
    background: transparent;
}
[data-theme="dark"] .combobox__item:hover .favorite-btn {
    background: rgba(40, 40, 40, 0.9);
}

/* Favorites checkbox */
.filter-group--checkbox {
    display: flex;
    align-items: center;
}
.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    user-select: none;
    padding: 0.5rem;
    border-radius: var(--border-radius-md);
    transition: background-color 0.2s;
}
.checkbox-label:hover {
    background-color: var(--bg-color);
}
.styled-checkbox {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}
.checkbox-text {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
}
.checkbox-icon {
    width: 20px;
    height: 20px;
    fill: none;
    stroke: var(--text-secondary);
    stroke-width: 2px;
    transition: all 0.3s ease;
}
.styled-checkbox:checked ~ .checkbox-text .checkbox-icon {
    fill: #e74c3c;
    stroke: #e74c3c;
}
.styled-checkbox:focus ~ .checkbox-text .checkbox-icon {
    stroke: var(--primary-color);
}

/* --- Social Sharing --- */
.result-social-share {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}
.result-social-share--setup {
    margin-top: 1rem;
    padding-top: 1rem;
}
.share-label {
    margin: 0 0 0.75rem 0;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-align: center;
}
.social-share-buttons {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
}
.social-share-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.65rem 1.25rem;
    border-radius: var(--border-radius-md);
    border: none;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
    color: white;
}
.social-share-btn svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}
.social-share-btn--twitter {
    background: linear-gradient(135deg, #1DA1F2 0%, #0d8bd9 100%);
    box-shadow: 0 2px 8px rgba(29, 161, 242, 0.3);
}
.social-share-btn--twitter:hover {
    background: linear-gradient(135deg, #0d8bd9 0%, #0a6fb8 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(29, 161, 242, 0.4);
}
.social-share-btn--facebook {
    background: linear-gradient(135deg, #1877F2 0%, #0d5fcc 100%);
    box-shadow: 0 2px 8px rgba(24, 119, 242, 0.3);
}
.social-share-btn--facebook:hover {
    background: linear-gradient(135deg, #0d5fcc 0%, #0a4da8 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(24, 119, 242, 0.4);
}
.social-share-btn:active {
    transform: translateY(0);
}

/* --- Disclaimer, FAQ, Other Sections --- */
.disclaimer {
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius-md);
    margin-bottom: 2rem;
    border-left: 4px solid;
}
.disclaimer--warning { border-color: var(--status-incompatible); background-color: #fdeaea; color: #721c24; }
.disclaimer--info { border-color: var(--secondary-color); background-color: #e5eff6; color: #004E89; }
.dark-mode .disclaimer--warning { background-color: #4a2125; color: #f0b8bc; }
.dark-mode .disclaimer--info { background-color: #1a2c3a; color: #8cb9de; }
.faq-item { margin-bottom: 1.5rem; }
.faq-item h4 { margin: 0 0 0.5rem; }
.faq-item p { margin: 0; color: var(--text-secondary); line-height: 1.6; }
.more-tools-section, .feedback-section {
    max-width: 1200px;
    margin: 3rem auto;
    padding: 2rem 1.5rem;
    background-color: var(--surface-color);
    border-radius: var(--border-radius-lg);
}
.more-tools-section h2, .feedback-section h2 { text-align: center; margin-top: 0; }
.more-tools-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1rem; }
.tool-card {
    display: block;
    padding: 1.5rem;
    background-color: var(--bg-color);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    text-align: center;
    transition: transform 0.2s, box-shadow 0.2s;
}
.tool-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); color: var(--primary-color); }
.form-message {
    padding: 0.75rem;
    border-radius: var(--border-radius-md);
    margin-top: 1rem;
    text-align: center;
}
.form-message--success { background-color: var(--status-compatible); color: white; }
.form-message--error { background-color: var(--status-incompatible); color: white; }


/* --- Modal --- */
body.modal-open { overflow: hidden; }
.modal-container {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}
.modal-overlay {
    position: absolute;
    inset: 0;
    background-color: rgba(0,0,0,0.6);
}
.modal-content {
    background-color: var(--surface-color);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    position: relative;
    z-index: 1;
    width: 90%;
    max-width: 600px;
}
.modal-close-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
}
.embed-code-wrapper { display: flex; gap: 1rem; align-items: center; }
.embed-code-wrapper pre {
    flex-grow: 1;
    background-color: var(--bg-color);
    padding: 1rem;
    border-radius: var(--border-radius-md);
    white-space: pre-wrap;
    word-break: break-all;
}
.modal-content--legal {
    max-width: 800px;
    max-height: 80vh;
    overflow-y: auto;
    text-align: left;
}
.modal-content--legal h1 {
    margin-top: 0;
    font-size: 1.5rem;
}
.modal-content--legal h2 {
    margin-top: 1.5rem;
    font-size: 1.2rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.25rem;
}
.modal-content--legal p, .modal-content--legal li {
    line-height: 1.6;
    color: var(--text-secondary);
}


/* --- Toast Notifications --- */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 10px;
    pointer-events: none;
}
.toast {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 1rem 1.5rem;
    min-width: 280px;
    max-width: 400px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    pointer-events: all;
    animation: slideInRight 0.3s ease-out, fadeOut 0.3s ease-in 2.7s;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.toast--success {
    border-left: 4px solid var(--status-compatible);
}
.toast--error {
    border-left: 4px solid var(--status-incompatible);
}
.toast--info {
    border-left: 4px solid var(--primary-color);
}
.toast__icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}
.toast__content {
    flex: 1;
}
.toast__title {
    font-weight: 600;
    margin: 0 0 0.25rem;
    color: var(--text-primary);
}
.toast__message {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin: 0;
}
@keyframes slideInRight {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}
@keyframes fadeOut {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}
@media (max-width: 600px) {
    .toast-container {
        left: 10px;
        right: 10px;
        top: 10px;
    }
    .toast {
        min-width: unset;
        max-width: unset;
    }
}

/* --- Loading Spinner --- */
.loading-spinner {
    display: none;
    text-align: center;
    padding: 2rem;
}
.loading-spinner.active {
    display: block;
}
.spinner {
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}
.loading-text {
    color: var(--text-secondary);
    font-weight: 500;
}
.button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* --- Email Notification Section --- */
.equipment__email-section {
    background: linear-gradient(135deg, #3B82F6 0%, #8B5CF6 100%);
    padding: 3rem 1.5rem;
    margin: 3rem auto;
    max-width: 1200px;
    border-radius: var(--border-radius-lg);
}
.equipment__email-box {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}
.equipment__email-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: #FFF;
    margin: 0 0 0.75rem;
}
.equipment__email-subtitle {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.95);
    margin: 0 0 1.5rem;
    line-height: 1.5;
}
.equipment__email-form {
    margin: 0;
}
.equipment__email-input-group {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1rem;
}
.equipment__email-input {
    flex: 1;
    padding: 0.875rem 1rem;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--border-radius-md);
    background: rgba(255, 255, 255, 0.95);
    color: #1A1A1A;
    font-size: 1rem;
    font-family: var(--font-family-sans);
}
.equipment__email-input:focus {
    outline: none;
    border-color: #FFF;
    background: #FFF;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.2);
}
.equipment__email-submit {
    padding: 0.875rem 2rem;
    background: var(--primary-color);
    color: #FFF;
    border: none;
    border-radius: var(--border-radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
    font-family: var(--font-family-sans);
}
.equipment__email-submit:hover {
    background: #004E89;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}
.equipment__email-success,
.equipment__email-error {
    padding: 0.75rem;
    border-radius: var(--border-radius-md);
    font-size: 0.95rem;
    margin-top: 0.75rem;
    font-weight: 500;
}
.equipment__email-success {
    background: rgba(40, 167, 69, 0.2);
    color: #FFF;
    border: 1px solid rgba(40, 167, 69, 0.5);
}
.equipment__email-error {
    background: rgba(220, 53, 69, 0.2);
    color: #FFF;
    border: 1px solid rgba(220, 53, 69, 0.5);
}
.equipment__email-trust {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.9);
    flex-wrap: wrap;
    margin-top: 0.5rem;
}

/* --- View Toggle --- */
.view-toggle {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    background: var(--surface-color);
    padding: 0.5rem;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
}

.view-toggle__btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: transparent;
    border: 2px solid transparent;
    border-radius: var(--border-radius-md);
    color: var(--text-secondary);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.view-toggle__btn:hover {
    background: rgba(255, 107, 53, 0.1);
    color: var(--primary-color);
}

.view-toggle__btn--active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.view-toggle__btn svg {
    width: 20px;
    height: 20px;
}

/* --- Compatibility Matrix Heatmap --- */
.matrix-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: center;
    justify-content: space-between;
    background: var(--surface-color);
    padding: 1rem;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
}

.matrix-legend {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.legend-color {
    width: 24px;
    height: 24px;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
}

.legend-color--compatible {
    background: var(--status-compatible);
}

.legend-color--conditional {
    background: var(--status-conditional);
}

.legend-color--incompatible {
    background: var(--status-incompatible);
}

.legend-color--na {
    background: #888;
}

.compatibility-matrix {
    background: var(--surface-color);
    padding: 1rem;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    overflow-x: auto;
}

.matrix-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 2px;
    min-width: 600px;
}

.matrix-table th,
.matrix-table td {
    padding: 0;
    text-align: center;
    position: relative;
}

.matrix-table th {
    font-weight: 600;
    color: var(--text-primary);
    padding: 0.5rem;
    font-size: 0.85rem;
}

.matrix-table th:first-child {
    text-align: left;
    min-width: 150px;
}

.matrix-table td:first-child {
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    padding: 0.5rem;
    background: var(--bg-color);
    font-size: 0.85rem;
}

.matrix-cell {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-weight: 700;
    font-size: 1.25rem;
    border: 2px solid transparent;
}

.matrix-cell:hover {
    transform: scale(1.1);
    z-index: 10;
    box-shadow: var(--shadow-md);
    border-color: var(--text-primary);
}

.matrix-cell--compatible {
    background: var(--status-compatible);
    color: white;
}

.matrix-cell--conditional {
    background: var(--status-conditional);
    color: #333;
}

.matrix-cell--incompatible {
    background: var(--status-incompatible);
    color: white;
}

.matrix-cell--na {
    background: #ccc;
    color: #666;
    cursor: not-allowed;
}

body.dark-mode .matrix-cell--na {
    background: #444;
    color: #888;
}

body.dark-mode .matrix-cell--conditional {
    color: #000;
}

/* Matrix Tooltip */
.matrix-tooltip {
    position: fixed;
    background: var(--surface-color);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 1rem;
    max-width: 300px;
    box-shadow: var(--shadow-md);
    z-index: 1000;
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.matrix-tooltip.visible {
    opacity: 1;
}

.matrix-tooltip__header {
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.matrix-tooltip__status {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    font-size: 0.75rem;
    margin-bottom: 0.5rem;
}

.matrix-tooltip__status--compatible {
    background: var(--status-compatible);
    color: white;
}

.matrix-tooltip__status--conditional {
    background: var(--status-conditional);
    color: #333;
}

.matrix-tooltip__status--incompatible {
    background: var(--status-incompatible);
    color: white;
}

.matrix-tooltip__notes {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.matrix-tooltip__notes ul {
    margin: 0.5rem 0 0;
    padding-left: 1.25rem;
}

.matrix-tooltip__notes li {
    margin-bottom: 0.25rem;
}

.matrix-empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-secondary);
}

.matrix-empty-state h3 {
    margin: 0 0 0.5rem;
    color: var(--text-primary);
}

.matrix-empty-state p {
    margin: 0;
    font-size: 0.95rem;
}

/* --- Troubleshooting Wizard --- */
.troubleshooting-wizard {
    background: var(--surface-color);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    margin-bottom: 2rem;
    box-shadow: var(--shadow-md);
}

.wizard-header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid var(--border-color);
}

.wizard-header h3 {
    margin: 0 0 0.5rem;
    color: var(--primary-color);
    font-size: 1.75rem;
}

.wizard-header p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 1rem;
}

.wizard-progress {
    margin-bottom: 2rem;
}

.wizard-progress-bar {
    width: 100%;
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.wizard-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transition: width 0.4s ease;
    border-radius: 4px;
}

.wizard-step-text {
    display: block;
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.wizard-question {
    background: var(--bg-color);
    padding: 1.5rem;
    border-radius: var(--border-radius-md);
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--primary-color);
}

.wizard-question h4 {
    margin: 0 0 0.5rem;
    color: var(--text-primary);
    font-size: 1.25rem;
}

.wizard-question p {
    margin: 0;
    color: var(--text-secondary);
    line-height: 1.6;
}

.wizard-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.wizard-option {
    background: var(--surface-color);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 1.5rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: center;
    position: relative;
}

.wizard-option:hover {
    border-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    background: var(--bg-color);
}

.wizard-option:active {
    transform: translateY(-1px);
}

.wizard-option__icon {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
    display: block;
}

.wizard-option__title {
    font-weight: 700;
    color: var(--text-primary);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    display: block;
}

.wizard-option__description {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
    display: block;
}

.wizard-solution {
    background: linear-gradient(135deg, rgba(0, 170, 68, 0.1), rgba(0, 170, 68, 0.05));
    border: 2px solid var(--status-compatible);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    margin-bottom: 2rem;
}

.wizard-solution h4 {
    color: var(--status-compatible);
    margin: 0 0 1rem;
    font-size: 1.5rem;
}

.wizard-solution__content {
    color: var(--text-primary);
    line-height: 1.8;
}

.wizard-solution__content ul {
    margin: 1rem 0;
    padding-left: 1.5rem;
}

.wizard-solution__content li {
    margin-bottom: 0.75rem;
}

.wizard-solution__recommendations {
    background: var(--surface-color);
    padding: 1.25rem;
    border-radius: var(--border-radius-md);
    margin-top: 1.5rem;
    border-left: 4px solid var(--accent-color);
}

.wizard-solution__recommendations h5 {
    margin: 0 0 1rem;
    color: var(--accent-color);
    font-size: 1.1rem;
}

.wizard-nav {
    display: flex;
    gap: 1rem;
    justify-content: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

body.dark-mode .wizard-solution {
    background: linear-gradient(135deg, rgba(0, 170, 68, 0.15), rgba(0, 170, 68, 0.08));
}

/* --- Comparison Feature --- */
.comparison-controls {
    background: var(--surface-color);
    padding: 1.5rem;
    border-radius: var(--border-radius-lg);
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
}

.comparison-selectors {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.comparison-selector-item label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.comparison-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.comparison-result-container {
    background: var(--surface-color);
    padding: 1.5rem;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    overflow-x: auto;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 600px;
}

.comparison-table th,
.comparison-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.comparison-table th {
    background: var(--bg-color);
    font-weight: 600;
    position: sticky;
    top: 0;
    z-index: 10;
}

.comparison-table th:first-child {
    width: 180px;
    font-weight: 700;
    color: var(--secondary-color);
}

.comparison-table td:first-child {
    font-weight: 600;
    color: var(--text-secondary);
    background: var(--bg-color);
}

.comparison-item-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}

.comparison-item-header img {
    width: 80px;
    height: 80px;
    object-fit: contain;
    border-radius: var(--border-radius-md);
    border: 2px solid var(--border-color);
}

.comparison-item-name {
    text-align: center;
}

.comparison-item-brand {
    font-size: 0.85rem;
    color: var(--text-secondary);
    display: block;
}

.comparison-item-model {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    display: block;
}

.comparison-value {
    font-size: 0.95rem;
}

.comparison-value--highlight {
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.1), rgba(247, 184, 1, 0.1));
    padding: 0.5rem;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
}

.comparison-value--check {
    color: var(--status-compatible);
    font-weight: 600;
}

.comparison-value--cross {
    color: var(--status-incompatible);
    font-weight: 600;
}

.comparison-empty-state {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--text-secondary);
}

.comparison-empty-state svg {
    width: 64px;
    height: 64px;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.comparison-empty-state h3 {
    margin: 0 0 0.5rem;
    color: var(--text-primary);
}

.comparison-empty-state p {
    margin: 0;
    font-size: 0.95rem;
}

@media (max-width: 768px) {
    .tool-header h1 { font-size: 1.8rem; }
    .compatibility-checker { flex-direction: column; gap: 1rem; }
    .connector-icon { transform: rotate(90deg); }
    .reverse-lookup-controls { flex-direction: column; align-items: stretch; }
    .full-setup-summary { grid-template-columns: 1fr; }
    .equipment__email-input-group { flex-direction: column; }
    .equipment__email-title { font-size: 1.5rem; }
    /* Better touch targets for mobile */
    .tab-nav__button {
        padding: 1rem 1.25rem;
        font-size: 0.95rem;
    }
    .button {
        padding: 1rem 1.5rem;
        font-size: 1.05rem;
    }
    .header__action-btn {
        padding: 0.75rem;
        width: 44px;
        height: 44px;
    }
    /* Mobile social share buttons */
    .social-share-buttons {
        flex-direction: column;
        width: 100%;
    }
    .social-share-btn {
        width: 100%;
        justify-content: center;
        padding: 0.85rem 1.25rem;
        font-size: 1rem;
    }
    .social-share-btn svg {
        width: 20px;
        height: 20px;
    }
}