/* 
   SwitchScore.com - Main Stylesheet
   Design system based on modern HSL colors, Inter & JetBrains Mono typography.
*/

/* --- Design Tokens --- */
:root {
  --primary: #1A56DB;
  --primary-hover: #1E40AF;
  --primary-light: #EFF6FF;
  --accent: #16A34A;
  --accent-hover: #15803D;
  --accent-light: #DCFCE7;
  --dark: #0F172A;
  --dark-hover: #1E293B;
  --text-primary: #1E293B;
  --text-secondary: #64748B;
  --bg-soft: #F8FAFC;
  --bg-card: #FFFFFF;
  --bg-input: #FFFFFF;
  --bg-navbar: rgba(255, 255, 255, 0.85);
  --bg-footer: #0F172A;
  --border-color: rgba(226, 232, 240, 0.8);
  --warning: #D97706;
  --warning-light: #FEF3C7;
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.04), 0 1px 3px rgba(0,0,0,0.08);
  --shadow-lg: 0 10px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.08);
  
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-input: 6px;
  
  --transition: 200ms ease;
  --max-width: 1120px;
}

:root[data-theme="dark"] {
  --bg-soft: #0B0F19;
  --bg-card: #1E293B;
  --bg-input: #0F172A;
  --bg-navbar: rgba(11, 15, 25, 0.85);
  --bg-footer: #020617;
  --border-color: rgba(51, 65, 85, 0.8);
  --dark: #F8FAFC;
  --dark-hover: #E2E8F0;
  --text-primary: #E2E8F0;
  --text-secondary: #94A3B8;
  --primary-light: rgba(30, 86, 219, 0.15);
  --accent-light: rgba(22, 163, 74, 0.15);
  --warning-light: rgba(217, 119, 6, 0.15);
  
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.2), 0 1px 3px rgba(0,0,0,0.3);
  --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  color: var(--text-primary);
  background-color: var(--bg-soft);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

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

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

section {
  padding-top: 80px;
  padding-bottom: 80px;
}

@media (max-width: 768px) {
  section {
    padding-top: 48px;
    padding-bottom: 48px;
  }
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: 1.2fr 0.8fr;
  }
}

/* --- Components: Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-btn);
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  gap: 0.5rem;
}

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

.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-1px);
}

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

.btn-outline-accent:hover {
  background-color: var(--accent-light);
  transform: translateY(-1px);
}

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

.btn-outline-dark:hover {
  background-color: var(--bg-soft);
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

/* --- Section Headers --- */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3rem auto;
  padding-left: 1rem;
  padding-right: 1rem;
}

.section-title {
  font-size: 2.25rem;
  margin-bottom: 1rem;
  color: var(--dark);
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

@media (max-width: 768px) {
  .section-title {
    font-size: 1.75rem;
  }
  .section-header {
    margin-bottom: 2rem;
  }
}

/* --- Sticky Navbar --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: var(--bg-navbar);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: box-shadow 300ms ease, background-color var(--transition), border-color var(--transition);
}

.navbar.scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 1.5rem;
  height: 70px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--dark);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  transition: color var(--transition);
}

.logo-accent {
  color: var(--accent);
}

.logo:hover,
.logo:focus {
  color: var(--dark);
}

.logo:hover .logo-text-switch,
.logo:focus .logo-text-switch {
  color: var(--dark);
}

.logo-icon {
  color: var(--accent);
  transition: transform var(--transition);
}

.logo-mark {
  width: 28px;
  height: 28px;
  object-fit: contain;
  flex-shrink: 0;
}

.nav-links {
  display: none;
  gap: 1.75rem;
}

.nav-dropdown {
  position: relative;
}

.nav-link {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: 0.25rem 0;
  transition: color var(--transition);
}

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

.nav-dropdown-trigger {
  display: inline-flex;
  align-items: center;
}

.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 1rem);
  left: 50%;
  z-index: 1001;
  width: 220px;
  padding: 0.45rem;
  background-color: var(--bg-navbar);
  border: 1px solid var(--border-color);
  border-radius: 18px;
  box-shadow: 0 20px 45px rgba(15, 23, 42, 0.16);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(-8px) scale(0.96);
  transform-origin: top center;
  transition: opacity 180ms ease, visibility 180ms ease, transform 180ms ease;
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0) scale(1);
}

.nav-dropdown-item {
  width: 100%;
  border: none;
  background: transparent;
  color: var(--text-primary);
  border-radius: 12px;
  padding: 0.85rem 0.95rem;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  transition: background-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.nav-dropdown-item:hover,
.nav-dropdown-item:focus-visible {
  background-color: var(--bg-soft);
  color: var(--primary);
  transform: translateX(4px);
  outline: none;
}

main,
.footer {
  transition: filter 220ms ease, opacity 220ms ease;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 999;
  background-color: rgba(15, 23, 42, 0.18);
  opacity: 0;
  pointer-events: none;
  transition: opacity 220ms ease;
}

@media (min-width: 992px) {
  body.tools-menu-open::before {
    opacity: 1;
  }

  body.tools-menu-open main,
  body.tools-menu-open .footer {
    filter: blur(6px);
    opacity: 0.62;
    pointer-events: none;
  }
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Theme Toggle Button */
.btn-theme-toggle {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  padding: 0;
}

.btn-theme-toggle:hover {
  background-color: var(--bg-soft);
  border-color: var(--primary);
  color: var(--primary);
  transform: scale(1.05);
}

.theme-icon {
  width: 18px;
  height: 18px;
  transition: transform var(--transition);
}

.btn-theme-toggle:hover .theme-icon {
  transform: rotate(15deg);
}

/* Toggle Sun/Moon icons based on active theme */
:root[data-theme="light"] .sun-icon {
  display: none;
}

:root[data-theme="dark"] .moon-icon {
  display: none;
}

.menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  background: transparent;
  border: none;
  cursor: pointer;
}

.menu-toggle .bar {
  width: 100%;
  height: 2px;
  background-color: var(--dark);
  border-radius: 2px;
  transition: var(--transition);
}

@media (min-width: 992px) {
  .nav-links {
    display: flex;
  }
  .menu-toggle {
    display: none;
  }
}

/* Mobile Hamburger Expanded Navigation */
@media (max-width: 991px) {
  .nav-links.expanded {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background-color: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem;
    gap: 1.25rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
  }

  .nav-dropdown {
    width: 100%;
  }

  .nav-dropdown-trigger {
    width: 100%;
  }

  .nav-dropdown-menu {
    position: static;
    width: 100%;
    margin-top: 0.75rem;
    padding: 0.35rem;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    background-color: var(--bg-soft);
  }

  .nav-dropdown:hover .nav-dropdown-menu,
  .nav-dropdown:focus-within .nav-dropdown-menu {
    transform: none;
  }
  
  .btn-nav {
    display: none; /* Hide in header on small mobile to save space */
  }
  
  .menu-toggle.open .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  
  .menu-toggle.open .bar:nth-child(2) {
    opacity: 0;
  }
  
  .menu-toggle.open .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
}

/* --- Hero Section --- */
.hero-section {
  padding-top: 130px; /* Offset sticky header */
  background: radial-gradient(100% 100% at 50% 0%, rgba(30, 86, 219, 0.03) 0%, rgba(248, 250, 252, 0) 100%), var(--bg-card);
}

.hero-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

@media (min-width: 992px) {
  .hero-container {
    grid-template-columns: 1.1fr 0.9fr;
  }
}

.hero-title {
  font-size: 3rem;
  letter-spacing: -0.025em;
  margin-bottom: 0.75rem;
  background: linear-gradient(135deg, var(--dark) 60%, var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
  line-height: 1.35;
}

.hero-text {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 2.25rem;
  max-width: 550px;
}

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

@media (max-width: 576px) {
  .hero-title {
    font-size: 2.25rem;
  }
  .hero-subtitle {
    font-size: 1.25rem;
  }
  .hero-ctas .btn {
    width: 100%;
  }
}

/* Hero Visual Summary Card */
.hero-visual {
  display: flex;
  justify-content: center;
}

.summary-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  width: 100%;
  max-width: 420px;
  overflow: hidden;
  transition: transform 300ms ease, box-shadow 300ms ease;
}

.summary-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 10px 10px -5px rgba(15, 23, 42, 0.04);
}

.summary-header {
  padding: 1.25rem 1.5rem;
  background-color: var(--bg-soft);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.summary-badge {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--primary);
  background-color: var(--primary-light);
  padding: 0.25rem 0.6rem;
  border-radius: 9999px;
  letter-spacing: 0.05em;
}

.summary-body {
  padding: 1.75rem 1.5rem;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}

.summary-row:last-child {
  margin-bottom: 0;
}

.summary-label {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.summary-value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.35rem;
}

.summary-value.owe {
  color: var(--warning);
}

.summary-value.owe-company {
  color: var(--accent);
}

.summary-value.fav {
  color: var(--primary);
  font-size: 1.5rem;
}

.summary-divider {
  height: 1px;
  background-color: var(--border-color);
  margin: 1.25rem 0;
}

.net-row {
  background-color: var(--primary-light);
  margin-left: -1.5rem;
  margin-right: -1.5rem;
  margin-bottom: -1.75rem;
  padding: 1.25rem 1.5rem;
}

.bold {
  font-weight: 700;
}

.summary-footer {
  padding: 0.85rem 1.5rem;
  background-color: var(--bg-soft);
  border-top: 1px solid var(--border-color);
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-align: center;
}

/* Trust Bar */
.trust-bar {
  max-width: var(--max-width);
  margin: 4rem auto 0 auto;
  padding: 1.5rem 1.5rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.trust-icon {
  font-size: 1.25rem;
}

.trust-text {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

@media (max-width: 768px) {
  .trust-bar {
    justify-content: center;
    gap: 1.25rem;
    margin-top: 2.5rem;
  }
  .trust-item {
    flex: 0 0 45%;
    justify-content: flex-start;
  }
}

@media (max-width: 480px) {
  .trust-item {
    flex: 0 0 100%;
  }
}

/* --- Monetization Placeholders --- */
.adsense-placeholder {
  padding: 1rem 1.5rem;
  text-align: center;
}

.adsense-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.adsense-box {
  background-color: var(--bg-soft);
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-card);
  padding: 2rem 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* --- The Problem Section --- */
.problem-section {
  background-color: var(--bg-soft);
}

.problem-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 576px) {
  .problem-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 992px) {
  .problem-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.problem-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-card);
  padding: 2rem 1.75rem;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.problem-emoji {
  font-size: 2.25rem;
  display: block;
  margin-bottom: 1.25rem;
}

.problem-question {
  font-size: 1.15rem;
  color: var(--dark);
  margin-bottom: 0.75rem;
}

.problem-explanation {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.problem-transition {
  text-align: center;
  margin-top: 3.5rem;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary);
}

/* --- Toolkit / Tools Section --- */
.tools-section {
  background-color: var(--bg-card);
}

.tool-tabs {
  max-width: 650px;
  margin: 0 auto 3rem auto;
  background-color: var(--bg-soft);
  border-radius: 9999px;
  padding: 0.35rem;
  display: flex;
  justify-content: space-between;
  border: 1px solid var(--border-color);
}

.tool-tab {
  flex: 1;
  background-color: transparent;
  border: none;
  border-radius: 9999px;
  padding: 0.75rem 1rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: var(--transition);
}

.tool-tab.active {
  background-color: var(--bg-card);
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.tool-tab:hover:not(.active) {
  color: var(--dark);
}

@media (max-width: 576px) {
  .tool-tabs {
    border-radius: var(--radius-card);
    flex-direction: column;
    padding: 0.5rem;
    gap: 0.25rem;
  }
  .tool-tab {
    border-radius: var(--radius-btn);
    padding: 0.6rem;
  }
}

.tool-panel {
  display: none;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.tool-panel.active {
  display: block;
}

/* Tool Panel Detail Layout */
.tool-card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  background-color: var(--bg-card);
  border-radius: 16px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

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

.tool-inputs {
  padding: 2.5rem;
}

.tool-outputs {
  padding: 2.5rem;
  background-color: var(--bg-soft);
  border-top: 1px solid var(--border-color);
}

@media (min-width: 992px) {
  .tool-outputs {
    border-top: none;
    border-left: 1px solid var(--border-color);
  }
}

@media (max-width: 576px) {
  .tool-inputs, .tool-outputs {
    padding: 1.5rem;
  }
}

.tool-badge-container {
  margin-bottom: 0.75rem;
}

.badge {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 0.25rem 0.6rem;
  border-radius: 9999px;
  letter-spacing: 0.05em;
  display: inline-block;
}

.badge-primary {
  color: var(--primary);
  background-color: var(--primary-light);
}

.badge-accent {
  color: var(--accent);
  background-color: var(--accent-light);
}

.badge-warning {
  color: var(--warning);
  background-color: var(--warning-light);
}

.tool-title-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.tool-title {
  font-size: 1.5rem;
}

.tool-icon {
  font-size: 1.75rem;
}

.tool-description {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.input-divider {
  border: 0;
  height: 1px;
  background-color: var(--border-color);
  margin: 1.5rem 0;
}

/* --- Form Styles --- */
.form-group {
  margin-bottom: 1.5rem;
}

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

.form-grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

@media (min-width: 576px) {
  .form-grid-2 {
    grid-template-columns: 1fr 1fr;
  }
}

label {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

input[type="number"],
input[type="text"],
input[type="date"],
select,
textarea {
  width: 100%;
  font-family: var(--font-sans);
  font-size: 1rem;
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-input);
  border: 1px solid var(--border-color);
  background-color: var(--bg-input);
  color: var(--text-primary);
  outline: none;
  transition: var(--transition);
}

input[type="number"]:focus,
input[type="text"]:focus,
input[type="date"]:focus,
select:focus,
textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.15);
}

.prefix-wrapper input {
  padding-left: 1.75rem;
}

.input-prefix {
  position: absolute;
  left: 0.75rem;
  color: var(--text-secondary);
  font-weight: 500;
  pointer-events: none;
}

.input-suffix {
  position: absolute;
  right: 0.75rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  pointer-events: none;
}

.form-helper {
  display: block;
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 0.35rem;
}

/* Slider Controls */
.slider-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.slider-label-row label {
  margin-bottom: 0;
}

.slider-value {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--primary);
}

input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--border-color);
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
  transition: transform 100ms;
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.slider-range-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

/* Radio Group */
.radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.radio-label {
  display: flex;
  align-items: center;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-btn);
  padding: 0.5rem 1rem;
  cursor: pointer;
  transition: var(--transition);
  margin-bottom: 0;
}

.radio-label input[type="radio"] {
  margin-right: 0.5rem;
  accent-color: var(--primary);
}

.radio-label span {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  text-transform: none;
  letter-spacing: 0;
}

.radio-label:hover {
  border-color: var(--primary);
  background-color: var(--primary-light);
}

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

.custom-notice-wrapper {
  margin-top: 0.75rem;
}

.hidden {
  display: none !important;
}

/* Toggle Switch / Button Segmented Control */
.toggle-container {
  display: flex;
  background-color: var(--bg-soft);
  padding: 0.25rem;
  border-radius: var(--radius-btn);
  border: 1px solid var(--border-color);
}

.toggle-btn {
  flex: 1;
  border: none;
  background-color: transparent;
  padding: 0.5rem;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: calc(var(--radius-btn) - 2px);
  transition: var(--transition);
}

.toggle-btn.active {
  background-color: var(--bg-input);
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}

/* Radio Stack for Email Options */
.radio-stack {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.radio-stack .radio-label {
  justify-content: flex-start;
  padding: 0.65rem 1rem;
}

/* --- Output Styles --- */
.output-header {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}

.output-main-value {
  font-family: var(--font-mono);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--warning);
  margin-bottom: 1.5rem;
}

.output-main-value.accent-text {
  color: var(--accent);
}

.output-breakdown {
  background-color: var(--bg-card);
  border-radius: var(--radius-btn);
  border: 1px solid var(--border-color);
  padding: 1.25rem;
  margin-bottom: 1.5rem;
}

.breakdown-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.breakdown-row:last-child {
  margin-bottom: 0;
}

.breakdown-row span {
  color: var(--text-secondary);
}

.breakdown-row strong {
  color: var(--dark);
  font-weight: 700;
}

.breakdown-row .method-range {
  font-size: 0.8rem;
  color: var(--primary);
  font-weight: 600;
}

.deduction-row {
  border-top: 1px solid var(--border-color);
  padding-top: 0.75rem;
  margin-top: 0.75rem;
}

.deduct-text {
  color: #DC2626 !important;
}

.status-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: 9999px;
}

.status-badge.eligible {
  color: var(--accent);
  background-color: var(--accent-light);
}

/* Info Alerts */
.info-alert {
  display: flex;
  gap: 0.75rem;
  border-radius: var(--radius-btn);
  padding: 1rem;
  margin-bottom: 1rem;
  font-size: 0.85rem;
  line-height: 1.45;
}

.warning-alert {
  background-color: var(--warning-light);
  border-left: 4px solid var(--warning);
  color: #92400E;
}

.info-blue-alert {
  background-color: var(--primary-light);
  border-left: 4px solid var(--primary);
  color: #1E40AF;
}

.info-green-alert {
  background-color: var(--accent-light);
  border-left: 4px solid var(--accent);
  color: #166534;
}

.alert-icon {
  font-size: 1.15rem;
}

/* Formula Presentation Box */
.formula-box {
  background-color: var(--bg-card);
  border-radius: var(--radius-btn);
  border: 1px solid var(--border-color);
  padding: 1.25rem;
  margin-bottom: 1.5rem;
  font-size: 0.85rem;
}

.formula-title {
  display: block;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.formula-code {
  display: block;
  font-family: var(--font-mono);
  background-color: var(--bg-soft);
  padding: 0.5rem;
  border-radius: var(--radius-input);
  margin-bottom: 0.5rem;
  color: var(--dark);
  font-weight: 700;
  word-break: break-all;
}

.formula-sub {
  margin-bottom: 0.5rem;
}

.formula-sub strong {
  display: inline-block;
  min-width: 120px;
}

.formula-sub code {
  font-family: var(--font-mono);
  background-color: var(--bg-soft);
  padding: 0.1rem 0.3rem;
  border-radius: 4px;
}

.formula-math {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 0.5rem;
  border-top: 1px dashed var(--border-color);
  padding-top: 0.5rem;
}

/* Affiliate Promo Box */
.affiliate-box {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-btn);
  padding: 1rem;
  font-size: 0.85rem;
  color: var(--text-primary);
  border-left: 4px solid var(--accent);
}

.affiliate-box a {
  font-weight: 700;
  color: var(--accent);
}

.affiliate-box a:hover {
  color: var(--accent-hover);
}

/* --- Email Generator Display --- */
.email-preview-container {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-btn);
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
  overflow: hidden;
}

.email-subject-line {
  padding: 0.75rem 1.25rem;
  background-color: var(--bg-soft);
  border-bottom: 1px solid var(--border-color);
  color: var(--dark);
}

.email-body-content {
  padding: 1.25rem;
  min-height: 250px;
  max-height: 350px;
  overflow-y: auto;
  font-family: var(--font-sans);
  line-height: 1.5;
  white-space: pre-line;
  outline: none;
  color: var(--text-primary);
}

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

.email-actions .btn {
  flex: 1;
}

.email-success-toast {
  background-color: var(--accent-light);
  color: #166534;
  border: 1px solid rgba(22, 163, 74, 0.2);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-btn);
  font-size: 0.85rem;
  font-weight: 600;
  margin-top: 0.75rem;
  text-align: center;
  opacity: 0;
  transition: opacity 300ms ease;
  pointer-events: none;
}

.email-success-toast.show {
  opacity: 1;
}

/* --- How It Works Section --- */
.how-it-works {
  background-color: var(--bg-soft);
}

.timeline {
  display: flex;
  flex-direction: column;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  gap: 2rem;
  position: relative;
}

.timeline-step {
  background-color: var(--bg-card);
  border-radius: var(--radius-card);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  flex: 1;
  position: relative;
  text-align: center;
  transition: transform var(--transition);
}

.timeline-step:hover {
  transform: translateY(-2px);
}

.timeline-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--primary);
  color: #FFFFFF;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: 0 4px 6px -1px rgba(26, 86, 219, 0.3);
}

.timeline-icon {
  font-size: 2.25rem;
  margin-bottom: 1rem;
  display: block;
}

.timeline-title {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.timeline-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

@media (min-width: 768px) {
  .timeline {
    flex-direction: row;
    align-items: stretch;
  }
  .timeline::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 2.5rem;
    right: 2.5rem;
    height: 2px;
    background-color: var(--border-color);
    z-index: 0;
  }
  .timeline-step {
    z-index: 1;
  }
}

/* --- Deep Dive Section (Problems We Solve) --- */
.deep-dive-section {
  background-color: var(--bg-card);
}

.deep-dive-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.deep-dive-tabs {
  display: flex;
  border-bottom: 2px solid var(--border-color);
  overflow-x: auto;
  gap: 1rem;
  margin-bottom: 2rem;
  scrollbar-width: none; /* Hide scrollbar for cleaner look */
}

.deep-dive-tabs::-webkit-scrollbar {
  display: none;
}

.deep-dive-tab {
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  padding: 0.75rem 0.5rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.deep-dive-tab:hover {
  color: var(--dark);
}

.deep-dive-tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.deep-dive-panels {
  min-height: 250px;
}

.deep-dive-panel {
  display: none;
}

.deep-dive-panel.active {
  display: block;
}

.panel-title {
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.body-text {
  font-size: 1rem;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
}

.styled-list {
  list-style: none;
}

.styled-list li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 1rem;
  font-size: 0.95rem;
  color: var(--text-primary);
}

.styled-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent);
  font-weight: 700;
}

.panel-info-card {
  background-color: var(--bg-soft);
  border-radius: var(--radius-card);
  padding: 1.5rem;
  border: 1px solid var(--border-color);
}

.panel-info-card h4 {
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

.policy-item {
  margin-bottom: 1rem;
  font-size: 0.85rem;
  border-bottom: 1px dashed var(--border-color);
  padding-bottom: 1rem;
}

.policy-item:last-child {
  margin-bottom: 0;
  border-bottom: none;
  padding-bottom: 0;
}

.warning-card {
  border-color: rgba(217, 119, 6, 0.2);
  background-color: var(--warning-light);
  color: #92400E;
}

.warning-card h4 {
  color: var(--warning);
}

.numbered-list {
  padding-left: 1.25rem;
}

.numbered-list li {
  margin-bottom: 0.75rem;
  font-size: 0.9rem;
}

/* Glossary Layout */
.glossary-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 576px) {
  .glossary-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.glossary-item {
  font-size: 0.85rem;
  background-color: var(--bg-soft);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-btn);
  border: 1px solid var(--border-color);
}

/* --- Expandable Accordion (FAQ & Rights) --- */
.rights-section {
  background-color: var(--bg-soft);
}

.accordion-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.accordion-item {
  background-color: var(--bg-card);
  border-radius: var(--radius-card);
  border: 1px solid var(--border-color);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}

.accordion-item:hover {
  box-shadow: var(--shadow-md);
}

.accordion-trigger {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 1.25rem 1.5rem;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--dark);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.chevron-icon {
  color: var(--text-secondary);
  transition: transform 300ms ease;
  flex-shrink: 0;
}

.accordion-item.open .chevron-icon {
  transform: rotate(180deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

.accordion-content-inner {
  padding: 0 1.5rem 1.5rem 1.5rem;
  font-size: 0.95rem;
  color: var(--text-primary);
  line-height: 1.6;
}

.accordion-content-inner p {
  margin-bottom: 0.75rem;
}

.accordion-content-inner p:last-child {
  margin-bottom: 0;
}

/* --- Document Checklist Section --- */
.checklist-section {
  background-color: var(--bg-card);
}

.checklist-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .checklist-container {
    grid-template-columns: repeat(3, 1fr);
  }
}

.checklist-category {
  background-color: var(--bg-soft);
  border-radius: var(--radius-card);
  padding: 1.75rem;
  border: 1px solid var(--border-color);
}

.category-title {
  font-size: 1.1rem;
  margin-bottom: 1.25rem;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 0.5rem;
}

.checklist-items {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  cursor: pointer;
  text-transform: none;
  font-weight: 500;
  letter-spacing: 0;
}

.checklist-box {
  margin-top: 0.25rem;
  accent-color: var(--accent);
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.checklist-text {
  font-size: 0.9rem;
  color: var(--text-primary);
  transition: var(--transition);
}

.checklist-item:has(.checklist-box:checked) .checklist-text {
  color: var(--text-secondary);
  text-decoration: line-through;
}

.checklist-actions {
  text-align: center;
  margin-top: 3rem;
}

/* --- About Section --- */
.about-section {
  background-color: var(--bg-card);
  border-top: 1px solid var(--border-color);
}

.about-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

@media (min-width: 768px) {
  .about-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.about-lead {
  font-size: 1.2rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--dark);
  margin-bottom: 1.25rem;
}

.about-body {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.values-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.value-card {
  background-color: var(--bg-soft);
  border-radius: var(--radius-card);
  padding: 1.5rem 1.25rem;
  border: 1px solid var(--border-color);
  text-align: center;
}

.value-icon {
  font-size: 1.75rem;
  display: block;
  margin-bottom: 0.5rem;
}

.value-title {
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.value-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* --- Footer --- */
.footer {
  background-color: var(--bg-footer);
  color: rgba(255, 255, 255, 0.7);
  padding-top: 5rem;
  padding-bottom: 3rem;
  font-size: 0.9rem;
}

.footer h4 {
  color: #FFFFFF;
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 3rem;
}

@media (min-width: 576px) {
  .footer-container {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 992px) {
  .footer-container {
    grid-template-columns: 1.2fr 0.8fr 0.8fr 0.8fr 1.4fr;
  }
}

.footer-brand .tagline {
  font-size: 0.85rem;
  margin-top: 1rem;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.5);
}

.logo-footer {
  color: #FFFFFF;
  font-size: 1.65rem;
}

.footer-links-col ul {
  list-style: none;
}

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

.footer-links-col a,
.footer-links-col button {
  color: rgba(255, 255, 255, 0.6);
  transition: var(--transition);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  text-align: left;
}

.footer-links-col a:hover,
.footer-links-col button:hover {
  color: #FFFFFF;
}

/* Footer Share Column */
.footer-share {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.share-buttons {
  display: flex;
  gap: 0.75rem;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-btn);
  font-weight: 600;
  font-size: 0.85rem;
  color: #FFFFFF !important;
}

.share-wa {
  background-color: #25D366;
}

.share-wa:hover {
  background-color: #20BA5A;
}

.share-in {
  background-color: #0A66C2;
}

.share-in:hover {
  background-color: #08529C;
}

.future-education {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.4);
  line-height: 1.4;
  margin-top: 0.5rem;
}

.future-tool-link {
  color: var(--accent);
  font-weight: 700;
}

.future-tool-link:hover {
  color: var(--accent-light);
}

/* Footer Bottom Disclaimer */
.footer-bottom {
  max-width: var(--max-width);
  margin: 2rem auto 0 auto;
  padding: 0 1.5rem;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.4);
  line-height: 1.5;
}

.footer-bottom p {
  margin-bottom: 0.5rem;
}

.copyright {
  margin-top: 1rem;
  border-top: 1px dashed rgba(255, 255, 255, 0.05);
  padding-top: 1rem;
  color: rgba(255, 255, 255, 0.3);
}

/* --- Print/PDF Layout Styles --- */
@media print {
  body * {
    visibility: hidden;
  }
  .print-container, .print-container * {
    visibility: visible;
  }
  .print-container {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    padding: 2rem;
    color: #000000;
    background-color: #FFFFFF;
    font-family: var(--font-sans);
  }
  .print-title {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
    border-bottom: 2px solid #000000;
    padding-bottom: 0.5rem;
  }
  .print-meta {
    font-size: 0.85rem;
    margin-bottom: 1.5rem;
    color: #555555;
  }
  .print-body {
    font-size: 1.05rem;
    white-space: pre-wrap;
    line-height: 1.6;
  }
}