/* Wealthory Design System – Institutional Polish */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  --color-bg: #0F0F0F;
  --color-bg-alt: #161616;
  --color-header-bg: #1B1B1D;
  --color-header-border: #2B2B2E;
  --color-text: #E0E0E0;
  --color-text-muted: #A0A0A0;
  --color-primary: #3B82F6;
  --color-accent: #0066FF;
  --color-border: #333333;
  --color-card-bg: #1A1A1A;
  --font-primary: 'Inter', system-ui, sans-serif;
  --radius: 24px; /* rounder cards for modern feel */
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.4);
  --shadow-md: 0 12px 32px rgba(0,0,0,0.6);
  --card-hover-shadow: 0 0 25px rgba(59, 130, 246, 0.15), 0 10px 40px rgba(0, 0, 0, 0.5);
  --transition: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --logo-filter: invert(1) brightness(2);
}

:root.light {
  --color-bg: #FFFFFF;
  --color-bg-alt: #F9FAFB;
  --color-header-bg: #F1F5F9;
  --color-header-border: #E2E8F0;
  --color-text: #1A1A1A;
  --color-text-muted: #4B5563;
  --color-primary: #0066FF;
  --color-border: #E2E5E9;
  --color-card-bg: #F9FAFB;
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.04);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.06);
  --card-hover-shadow: 0 15px 35px rgba(0, 102, 255, 0.1);
  --logo-filter: none;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-primary);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color var(--transition), color var(--transition);
}
main {
  flex-grow: 1;
}

/* ── Typography Scale ── */
h1, h2, h3, h4 { color: var(--color-text); font-weight: 700; line-height: 1.2; }
.hero-title { font-size: 3.5rem; letter-spacing: -1.5px; margin-bottom: 1.25rem; }
.hero-subtitle { font-size: 1.25rem; font-weight: 400; color: var(--color-text-muted); max-width: 650px; margin: 0 auto 2.5rem; line-height: 1.6; }
.section-title { font-size: 2rem; letter-spacing: -0.5px; margin-bottom: 2rem; }

/* ── Navigation ── */
header {
  background: var(--color-header-bg);
  border-bottom: 1px solid var(--color-header-border);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.25);
  transition: background-color var(--transition), border-color var(--transition), box-shadow var(--transition);
  position: relative;
  width: 100%;
}
:root.light header {
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}
.site-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1600px;
  margin: 0 auto;
  padding: 1rem 2rem;
}
.site-nav .logo img {
  height: 120px;
  width: auto;
  display: block;
  margin: -40px 0; /* Prevent the navbar from becoming too tall */
}

.site-nav .logo .logo-dark { 
  display: block; 
  mix-blend-mode: screen; /* Makes solid black background completely transparent */
}
.site-nav .logo .logo-light { 
  display: none; 
  mix-blend-mode: multiply; /* Makes solid white background completely transparent */
}

:root.light .site-nav .logo .logo-dark { display: none; }
:root.light .site-nav .logo .logo-light { display: block; }


.nav-links { display: flex; gap: 2rem; align-items: center; }
.nav-links a.nav-link,
.nav-links a.nav-utility {
  text-decoration: none;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.25s ease;
  position: relative;
  padding: 0.25rem 0;
}
.nav-links a.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.25s ease;
}
.nav-links a.nav-link:hover {
  color: var(--color-text);
}
.nav-links a.nav-link:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}
.nav-utility { font-size: 0.85rem; color: var(--color-text-muted) !important; }
.nav-utility:hover { color: var(--color-text) !important; }
/* Theme Toggle */
.theme-toggle {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  cursor: pointer;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.3s ease;
}
.theme-toggle:hover {
  background: var(--color-border);
  color: var(--color-text);
  transform: rotate(15deg);
}
.theme-toggle .moon-icon,
:root.light .theme-toggle .sun-icon {
  display: none;
}
:root.light .theme-toggle .moon-icon {
  display: block;
}
.nav-cta {
  background: linear-gradient(135deg, #0044CC 0%, #0066FF 100%);
  color: #fff !important;
  padding: 0.6rem 1.25rem;
  border-radius: 12px;
  font-weight: 600 !important;
  box-shadow: 0 4px 12px rgba(0, 68, 204, 0.2);
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease !important;
  animation: none !important;
  text-decoration: none !important;
}
.nav-cta:hover { 
  background: linear-gradient(135deg, #0055FF 0%, #3B82F6 100%) !important;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(0, 68, 204, 0.35);
  filter: brightness(1.1);
  text-decoration: none !important;
}

@keyframes dopaminePulse {
  0% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.7); }
  70% { box-shadow: 0 0 0 10px rgba(59, 130, 246, 0); }
  100% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0); }
}

/* ── Page Layout & Hero ── */
.page-container { max-width: 1600px; margin: 0 auto; padding: 4rem 2rem; }
.hero-section { text-align: center; padding: 6rem 1rem 8rem; }

/* Structural Packaging & Centering for Tools */
.page-header {
  max-width: 1600px; 
  margin: 0 auto 40px auto; /* Perfectly align with calc-layout and add space below */
  padding: 0 1rem; /* Safety padding */
}
.page-header h1 {
  margin-bottom: 32px;
}
.page-header p {
  color: #9CA3AF;
  line-height: 1.6;
}

/* Pure Heading Overhaul */
.micro-badge {
  display: inline-block;
  background: rgba(59, 130, 246, 0.1);
  color: var(--color-primary);
  padding: 0.25rem 1rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 1rem;
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.15);
}
.section-title-massive {
  font-size: 3rem; /* 4xl/5xl equivalent */
  font-weight: 800;
  letter-spacing: -1px;
  color: var(--color-text);
  line-height: 1.1;
}


/* ── Tools Grid ── */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2.5rem;
}
.tool-card {
  text-decoration: none;
  color: var(--color-text);
  padding: 3rem 2.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background-color var(--transition);
  transform: translateZ(0); /* Hardware acceleration to prevent flicker */
  backface-visibility: hidden;
  background: var(--color-card-bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.tool-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--card-hover-shadow);
  transform: translateY(-4px);
}
.tool-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}
.tool-card:hover::before {
  opacity: 1;
}

.card-icon-wrapper {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.15) 0%, rgba(59, 130, 246, 0.03) 100%);
  border: 1px solid rgba(59, 130, 246, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 2rem;
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.1);
  transition: transform var(--transition), box-shadow var(--transition);
}
.tool-card:hover .card-icon-wrapper {
  transform: scale(1.05);
  box-shadow: 0 0 30px rgba(59, 130, 246, 0.25);
}
.card-icon-wrapper svg { 
  width: 42px; 
  height: 42px; 
  color: var(--color-primary); 
  fill: none;
  stroke: var(--color-primary);
  stroke-width: 1.75;
}

.tool-card h3 { font-size: 1.4rem; font-weight: 700; margin-bottom: 1rem; color: var(--color-text); transition: color var(--transition); }
.tool-card p { font-size: 1.05rem; color: var(--color-text-muted); line-height: 1.6; }

.text-highlight {
  color: var(--color-primary);
  font-weight: 600;
}

/* ── Semantic SEO Details (Accordion) ── */
.seo-content {
  max-width: 800px;
  margin: 5rem auto 0;
  padding-top: 4rem;
  border-top: 1px solid var(--color-border);
}
.seo-content h2 { font-size: 1.75rem; margin-bottom: 1.5rem; letter-spacing: -0.5px; }
.seo-content h3 { font-size: 1.25rem; margin: 2.5rem 0 1rem; }
.seo-content p { color: var(--color-text-muted); margin-bottom: 1.5rem; font-size: 1.05rem; line-height: 1.7; }
.seo-content .formula-box {
  background: var(--color-bg-alt);
  padding: 1.5rem;
  border-radius: var(--radius);
  border-left: 4px solid var(--color-primary);
  margin-bottom: 1.5rem;
  font-family: var(--font-primary);
  font-size: 1rem;
  color: var(--color-text);
}
details {
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 0;
}
summary {
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none; /* Hide default arrow */
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--color-text);
  transition: color var(--transition);
}
summary::-webkit-details-marker { display: none; }
summary::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--color-text-muted);
  transition: transform var(--transition);
}
details[open] summary::after { transform: rotate(45deg); }
details p { margin-top: 1rem; margin-bottom: 0; font-size: 1rem; }

/* ── Compliance Footer ── */
.compliance-footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: 4rem 2rem 3rem;
  margin-top: 6rem;
  transition: background-color var(--transition), border-color var(--transition);
}
.footer-inner {
  max-width: 1600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}
.footer-disclaimer {
  background: rgba(239, 68, 68, 0.04);
  border-left: 3px solid #EF4444;
  padding: 1.25rem 1.5rem;
  border-radius: 6px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  transition: background-color var(--transition);
}
:root.light .footer-disclaimer {
  background: rgba(239, 68, 68, 0.06);
}
.footer-disclaimer strong { color: #EF4444; font-weight: 600; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--color-border);
  padding-top: 2rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-links { display: flex; gap: 2rem; }
.footer-links a { 
  color: var(--color-text-muted); 
  text-decoration: none; 
  transition: color 0.25s ease; 
  position: relative;
}
.footer-links a:hover { color: var(--color-text); }
.footer-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--color-text-muted);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.25s ease, background-color 0.25s ease;
}
.footer-links a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
  background: var(--color-text);
}



/* ── Calculator Specific Base (kept minimal) ── */
.calc-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
  max-width: 1600px; margin: 0 auto;
  position: relative; /* For watermark */
}

/* Watermark Subliminal Anchoring */
.watermark-bg::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  height: 100%;
  background-image: url('/assets/logo.png');
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
  opacity: 0.03; /* Subliminal level */
  pointer-events: none;
  z-index: 0;
}

/* Loss Aversion Alert */
.alert-loss {
  background: #FFF3F3;
  color: #D32F2F;
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  border-left: 3px solid #D32F2F;
  font-size: 0.9rem;
  font-weight: 500;
  margin-top: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tab-group {
  display: flex;
  background: var(--color-bg-alt);
  padding: 4px;
  border-radius: 16px;
  margin-bottom: 1.5rem;
  border: 1px solid var(--color-border);
}
.tab-btn {
  flex: 1;
  padding: 10px 16px;
  border: none;
  background: transparent;
  border-radius: 12px;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
}
.tab-btn:hover {
  color: var(--color-text);
}
.tab-btn.active {
  background: var(--color-bg);
  color: var(--color-accent);
  box-shadow: var(--shadow-sm);
  font-weight: 600;
}

/* Manual Input Field */
.input-wrapper {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  color: var(--color-text);
  font-weight: 600;
}
.manual-input {
  width: 90px;
  padding: 4px 8px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  text-align: right;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  background: var(--color-card-bg);
  transition: border-color var(--transition), box-shadow var(--transition), background-color var(--transition), color var(--transition);
  /* Hide arrows */
  -moz-appearance: textfield;
}
.manual-input::-webkit-outer-spin-button,
.manual-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.manual-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.25);
}


.calc-panel { background: var(--color-card-bg); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 2.5rem; box-shadow: var(--shadow-sm); transition: background-color var(--transition), border-color var(--transition); }
.field { margin-bottom: 2rem; }
.field label { display: flex; justify-content: space-between; align-items: center; font-size: 0.9rem; font-weight: 500; color: var(--color-text-muted); margin-bottom: 0.75rem; }
.field .value { font-weight: 600; color: var(--color-text); }
input[type="range"] { 
  width: 100%; 
  height: 6px; 
  background: var(--color-border); 
  border-radius: 3px; 
  outline: none; 
  cursor: pointer; 
  accent-color: var(--color-primary);
}
.result-card { background: var(--color-bg-alt); padding: 1.5rem; border-radius: var(--radius); margin-bottom: 1rem; border: 1px solid var(--color-border); transition: background-color var(--transition), border-color var(--transition); }
.result-label { font-size: 0.85rem; font-weight: 500; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 0.5rem; }
.result-value { font-size: 1.75rem; font-weight: 700; color: var(--color-text); }
.result-value.highlight { color: var(--color-accent); }

/* ── Responsive Architecture ── */

/* 1. Large Desktops (max-width: 1400px) */
@media (max-width: 1400px) {
  .calc-layout { gap: 3rem; }
}

/* 2. Tablets & Small Desktops (max-width: 1024px) */
@media (max-width: 1024px) {
  .calc-layout { gap: 2rem; }
  .calc-panel { padding: 2rem; }
  .page-container { padding: 3rem 1.5rem; }
  .hero-title { font-size: 3rem; }
}

/* 3. Mobile Navigation & Large Phones (max-width: 768px) */
@media (max-width: 768px) {
  .site-nav { flex-wrap: wrap; padding: 1rem 1.25rem; position: relative; }
  .site-nav .logo { flex: 1 1 100%; display: flex; justify-content: flex-start; }
  .site-nav .logo img { height: 75px; margin: -10px 0; }
  .nav-links { width: 100%; justify-content: flex-start; margin-top: 0.75rem; gap: 1rem !important; }
  .nav-links a.nav-link, .nav-links a.nav-utility { font-size: 0.95rem; }
  .nav-cta { padding: 0.5rem 1rem !important; font-size: 0.9rem !important; }
  .theme-toggle { position: absolute; top: 1.25rem; right: 1.25rem; }
  
  .hero-title { font-size: 2.5rem; }
  .section-title-massive { font-size: 2.25rem; }
  .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
  
  .calc-layout { grid-template-columns: 1fr; gap: 1.5rem; }
  .calc-panel { padding: 1.5rem; }
  .page-header { margin-bottom: 24px; }
}

/* 4. Small Mobile / iPhone 5s (max-width: 375px) */
@media (max-width: 375px) {
  .hero-title { font-size: 2rem; }
  .hero-subtitle { font-size: 1rem; }
  .section-title-massive { font-size: 1.8rem; }
  .page-container { padding: 1.5rem 0.75rem; }
  .calc-panel { padding: 1rem; }
  .result-value { font-size: 1.5rem; }
  .nav-links { gap: 0.75rem !important; }
}