/* ===========================================================
   fd.com — Main Stylesheet
   Premium Financial Calculator Website
   =========================================================== */

/* ── Google Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Outfit:wght@400;500;600;700;800&display=swap');

/* ── CSS Custom Properties ── */
:root {
  /* Colors */
  --primary:       #1d4ed8;
  --primary-dark:  #1e3a8a;
  --primary-light: #3b82f6;
  --accent:        #10b981;
  --accent-dark:   #059669;
  --accent-light:  #34d399;
  --white:         #ffffff;
  --gray-50:       #f8fafc;
  --gray-100:      #f1f5f9;
  --gray-200:      #e2e8f0;
  --gray-300:      #cbd5e1;
  --gray-400:      #94a3b8;
  --gray-500:      #64748b;
  --gray-600:      #475569;
  --gray-700:      #334155;
  --gray-800:      #1e293b;
  --gray-900:      #0f172a;

  /* Typography */
  --font-heading: 'Outfit', sans-serif;
  --font-body:    'Inter', sans-serif;

  /* Spacing */
  --section-py: 5rem;
  --container:  1200px;
  --radius-sm:  0.5rem;
  --radius:     0.75rem;
  --radius-lg:  1rem;
  --radius-xl:  1.5rem;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow:     0 4px 16px rgba(0,0,0,.08);
  --shadow-md:  0 8px 24px rgba(0,0,0,.10);
  --shadow-lg:  0 16px 40px rgba(0,0,0,.12);
  --shadow-xl:  0 24px 60px rgba(0,0,0,.14);

  /* Transitions */
  --transition: all .25s cubic-bezier(.4,0,.2,1);
  --transition-slow: all .4s cubic-bezier(.4,0,.2,1);
}

/* Dark Mode Variables */
[data-theme="dark"] {
  --white:    #0f172a;
  --gray-50:  #1e293b;
  --gray-100: #334155;
  --gray-200: #475569;
  --gray-300: #64748b;
  --gray-400: #94a3b8;
  --gray-500: #cbd5e1;
  --gray-600: #e2e8f0;
  --gray-700: #f1f5f9;
  --gray-800: #f8fafc;
  --gray-900: #ffffff;
  --shadow:     0 4px 16px rgba(0,0,0,.4);
  --shadow-md:  0 8px 24px rgba(0,0,0,.5);
  --shadow-lg:  0 16px 40px rgba(0,0,0,.6);
}

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

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

body {
  font-family: var(--font-body);
  color: var(--gray-800);
  background: var(--white);
  line-height: 1.6;
  transition: background .3s, color .3s;
  overflow-x: hidden;
}

h1,h2,h3,h4,h5,h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  color: var(--gray-900);
}

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

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

ul { list-style: none; }

/* ── Utility Classes ── */
.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.section { padding-block: var(--section-py); }

.section-sm { padding-block: 3rem; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .3rem .85rem;
  border-radius: 2rem;
  font-size: .75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
}

.badge-primary { background: rgba(29,78,216,.1); color: var(--primary); }
.badge-accent  { background: rgba(16,185,129,.1); color: var(--accent); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .75rem 1.75rem;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: .95rem;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--transition);
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(29,78,216,.35);
}

.btn-accent {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-accent:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(16,185,129,.35);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-ghost {
  background: var(--gray-100);
  color: var(--gray-700);
  border-color: transparent;
}
.btn-ghost:hover {
  background: var(--gray-200);
  color: var(--gray-900);
}

.btn-sm { padding: .5rem 1.25rem; font-size: .875rem; }
.btn-lg { padding: 1rem 2.25rem; font-size: 1rem; }

.text-gradient {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 3.5rem;
}
.section-header h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  margin-bottom: .75rem;
}
.section-header p {
  color: var(--gray-600);
  font-size: 1.05rem;
  line-height: 1.7;
}

/* ── Navigation ── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--gray-200);
  transition: var(--transition);
}

[data-theme="dark"] .navbar {
  background: rgba(15,23,42,.95);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

.nav-container {
  display: flex;
  align-items: center;
  gap: 2rem;
  height: 70px;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--gray-900);
  text-decoration: none;
  flex-shrink: 0;
}

.nav-logo .logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: .6rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.1rem;
}

.nav-logo span { color: var(--primary); }
.nav-logo em { color: var(--accent); font-style: normal; }

/* SVG Logo Image */
.logo-img {
  height: 38px;
  width: auto;
  display: block;
  flex-shrink: 0;
  object-fit: contain;
  border-radius: 0.4rem;
}

/* Footer logo text */
.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 800;
  color: #fff;
  text-decoration: none;
  margin-bottom: 1rem;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: .25rem;
  flex: 1;
}

.nav-link {
  padding: .5rem .85rem;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  font-weight: 500;
  color: var(--gray-700);
  transition: var(--transition);
  white-space: nowrap;
}
.nav-link:hover { background: var(--gray-100); color: var(--primary); }
.nav-link.active { background: rgba(29,78,216,.08); color: var(--primary); font-weight: 600; }

/* Dropdown */
.nav-dropdown { position: relative; }
.nav-dropdown-toggle { cursor: pointer; display: flex; align-items: center; gap: .3rem; background: transparent; border: none; font-family: inherit; }
.nav-dropdown-toggle svg { transition: var(--transition); }
.nav-dropdown:hover .nav-dropdown-toggle svg { transform: rotate(180deg); }

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  min-width: 260px;
  padding: .5rem;
  padding-top: 1rem;  /* invisible bridge - keeps hover alive */
  margin-top: -.5rem; /* overlap button edge to avoid gap */
  opacity: 0;
  pointer-events: none;
  transform: translateY(-4px);
  transition: var(--transition);
}
.nav-dropdown:hover .nav-dropdown-menu {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.nav-dropdown-item {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .65rem .9rem;
  border-radius: var(--radius-sm);
  color: var(--gray-700);
  font-size: .9rem;
  font-weight: 500;
  transition: var(--transition);
}
.nav-dropdown-item:hover { background: var(--gray-100); color: var(--primary); }
.nav-dropdown-item .item-icon {
  width: 32px; height: 32px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: .45rem;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: .85rem; flex-shrink: 0;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin-left: auto;
}

/* Search Bar */
.nav-search {
  position: relative;
  display: flex;
  align-items: center;
}
.nav-search input {
  width: 200px;
  padding: .5rem .85rem .5rem 2.2rem;
  border: 1.5px solid var(--gray-200);
  border-radius: 2rem;
  font-family: var(--font-body);
  font-size: .875rem;
  background: var(--gray-100);
  color: var(--gray-800);
  transition: var(--transition);
  outline: none;
}
.nav-search input:focus {
  border-color: var(--primary);
  background: var(--white);
  width: 260px;
  box-shadow: 0 0 0 3px rgba(29,78,216,.1);
}
.nav-search .search-icon {
  position: absolute;
  left: .7rem;
  color: var(--gray-400);
  font-size: .9rem;
}

/* Search Results Dropdown */
.search-results {
  position: absolute;
  top: calc(100% + .5rem);
  left: 0;
  right: 0;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  box-shadow: var(--shadow-xl);
  padding: .5rem;
  z-index: 100;
  display: none;
}
.search-results.active { display: block; }
.search-result-item {
  display: flex; align-items: center; gap: .65rem;
  padding: .55rem .75rem;
  border-radius: var(--radius-sm);
  font-size: .875rem;
  color: var(--gray-700);
  cursor: pointer;
  transition: var(--transition);
}
.search-result-item:hover { background: var(--gray-100); color: var(--primary); }

/* Dark Mode Toggle */
.theme-toggle {
  width: 40px; height: 40px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  background: var(--gray-100);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  color: var(--gray-600);
  font-size: 1.1rem;
  transition: var(--transition);
}
.theme-toggle:hover { background: var(--gray-200); color: var(--gray-900); }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: .5rem;
  border: none;
  background: none;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--gray-700);
  border-radius: 2px;
  transition: var(--transition);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Hero Section ── */
.hero {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, #1e40af 100%);
  color: #fff;
  padding: 5rem 0 6rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 80px;
  background: var(--white);
  clip-path: ellipse(55% 100% at 50% 100%);
}

[data-theme="dark"] .hero::after { background: var(--gray-900); }

.hero-container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .35rem 1rem;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 2rem;
  font-size: .8rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 1.5rem;
  backdrop-filter: blur(8px);
}
.hero-badge .dot { width: 6px; height: 6px; background: var(--accent-light); border-radius: 50%; animation: pulse 2s infinite; }

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: .5; transform: scale(1.4); }
}

.hero-title {
  font-size: clamp(2.2rem, 4.5vw, 3.25rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.15;
  margin-bottom: 1.25rem;
}
.hero-title .highlight { color: var(--accent-light); }

.hero-desc {
  font-size: 1.1rem;
  color: rgba(255,255,255,.85);
  line-height: 1.75;
  margin-bottom: 2rem;
  max-width: 520px;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: center;
}

.hero-stats {
  display: flex;
  gap: 2rem;
  margin-top: 2.5rem;
}
.hero-stat { text-align: center; }
.hero-stat .value {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--accent-light);
}
.hero-stat .label { font-size: .8rem; color: rgba(255,255,255,.7); margin-top: .15rem; }

/* Hero Calculator Card */
.hero-visual {
  display: flex;
  justify-content: flex-end;
  position: relative;
}

.hero-card {
  background: rgba(255,255,255,.1);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: var(--radius-xl);
  padding: 2rem;
  width: 100%;
  max-width: 380px;
  box-shadow: var(--shadow-xl);
  animation: float 4s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-12px); }
}

.hero-card-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: rgba(255,255,255,.9);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: .5rem;
}

.quick-calc-group { margin-bottom: 1.25rem; }
.quick-calc-group label {
  display: block;
  font-size: .8rem;
  font-weight: 600;
  color: rgba(255,255,255,.75);
  margin-bottom: .4rem;
  text-transform: uppercase;
  letter-spacing: .05em;
}
.quick-calc-group input, .quick-calc-group select {
  width: 100%;
  padding: .7rem 1rem;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.25);
  border-radius: var(--radius-sm);
  color: #fff;
  font-family: var(--font-body);
  font-size: .95rem;
  outline: none;
  transition: var(--transition);
}
.quick-calc-group input::placeholder { color: rgba(255,255,255,.45); }
.quick-calc-group input:focus, .quick-calc-group select:focus {
  border-color: var(--accent-light);
  box-shadow: 0 0 0 3px rgba(52,211,153,.15);
}
.quick-calc-group select option { color: var(--gray-800); background: var(--white); }

.hero-result {
  background: rgba(16,185,129,.15);
  border: 1px solid rgba(52,211,153,.3);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin-top: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.hero-result .result-label { font-size: .8rem; color: rgba(255,255,255,.7); }
.hero-result .result-value { font-family: var(--font-heading); font-size: 1.4rem; font-weight: 800; color: var(--accent-light); }

/* ── Tools Grid ── */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5rem;
}

.tool-card {
  display: block;
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  text-decoration: none;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.tool-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transition: var(--transition);
}
.tool-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); border-color: var(--gray-300); }
.tool-card:hover::before { transform: scaleX(1); }

.tool-icon {
  width: 52px; height: 52px;
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 1.25rem;
}

.tool-card h3 { font-size: 1.05rem; color: var(--gray-900); margin-bottom: .5rem; }
.tool-card p  { font-size: .875rem; color: var(--gray-600); line-height: 1.6; }
.tool-card .tool-meta {
  display: flex; align-items: center; gap: 1rem;
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--gray-100);
  font-size: .8rem; color: var(--gray-500);
}
.tool-card .tool-cta {
  margin-left: auto;
  font-size: .8rem;
  font-weight: 600;
  color: var(--primary);
  display: flex; align-items: center; gap: .25rem;
}

/* Color Variants */
.icon-blue   { background: rgba(29,78,216,.1);  color: var(--primary); }
.icon-green  { background: rgba(16,185,129,.1); color: var(--accent); }
.icon-purple { background: rgba(139,92,246,.1); color: #8b5cf6; }
.icon-orange { background: rgba(245,158,11,.1); color: #f59e0b; }
.icon-red    { background: rgba(239,68,68,.1);  color: #ef4444; }
.icon-teal   { background: rgba(20,184,166,.1); color: #14b8a6; }
.icon-indigo { background: rgba(99,102,241,.1); color: #6366f1; }
.icon-pink   { background: rgba(236,72,153,.1); color: #ec4899; }

/* ── Features / Trust Section ── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
}

.feature-item {
  text-align: center;
  padding: 2rem 1.5rem;
  border-radius: var(--radius-lg);
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  transition: var(--transition);
}
.feature-item:hover { background: var(--white); box-shadow: var(--shadow-md); transform: translateY(-4px); }

.feature-icon {
  width: 60px; height: 60px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 1.25rem;
  color: #fff;
}

.feature-item h3 { font-size: 1rem; margin-bottom: .5rem; color: var(--gray-900); }
.feature-item p  { font-size: .875rem; color: var(--gray-600); line-height: 1.6; }

/* ── Blog Cards ── */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
}

.blog-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.blog-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }

.blog-card-img {
  height: 200px;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-light) 100%);
  display: flex; align-items: center; justify-content: center;
  font-size: 3rem;
  position: relative;
  overflow: hidden;
}
.blog-card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 50%, rgba(0,0,0,.3));
}

.blog-card-body { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; }
.blog-card-cat {
  font-size: .75rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .06em;
  color: var(--accent); margin-bottom: .75rem;
}
.blog-card-title {
  font-size: 1.05rem; font-weight: 700;
  color: var(--gray-900);
  line-height: 1.4;
  margin-bottom: .65rem;
}
.blog-card-title a { color: inherit; }
.blog-card-title a:hover { color: var(--primary); }
.blog-card-excerpt { font-size: .875rem; color: var(--gray-600); line-height: 1.6; flex: 1; }
.blog-card-footer {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: 1.25rem; padding-top: 1rem; border-top: 1px solid var(--gray-100);
  font-size: .8rem; color: var(--gray-500);
}
.blog-card-footer a { color: var(--primary); font-weight: 600; font-size: .8rem; }

/* ── FAQ Accordion ── */
.faq-list { max-width: 780px; margin-inline: auto; }

.faq-item {
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius);
  margin-bottom: 1rem;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.active { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(29,78,216,.08); }

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  font-weight: 600;
  font-size: .95rem;
  color: var(--gray-900);
  cursor: pointer;
  gap: 1rem;
  background: var(--white);
  user-select: none;
}
.faq-question:hover { color: var(--primary); }

.faq-icon {
  width: 28px; height: 28px; flex-shrink: 0;
  background: var(--gray-100);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--gray-600);
  font-size: 1.1rem;
  transition: var(--transition);
}
.faq-item.active .faq-icon { background: var(--primary); color: #fff; transform: rotate(45deg); }

.faq-answer {
  display: none;
  padding: 0 1.5rem 1.25rem;
  font-size: .9rem;
  color: var(--gray-700);
  line-height: 1.75;
  background: var(--white);
}
.faq-item.active .faq-answer { display: block; }

/* ── Calculator Pages ── */
.calc-hero {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  padding: 3.5rem 0 4.5rem;
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.calc-hero::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 0; right: 0;
  height: 60px;
  background: var(--white);
  clip-path: ellipse(55% 100% at 50% 100%);
}
[data-theme="dark"] .calc-hero::after { background: var(--gray-900); }

.breadcrumb {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .825rem;
  color: rgba(255,255,255,.7);
  justify-content: center;
  margin-bottom: 1.25rem;
}
.breadcrumb a { color: rgba(255,255,255,.8); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb span { color: rgba(255,255,255,.45); }

.calc-hero h1 { font-size: clamp(1.75rem, 4vw, 2.75rem); color: #fff; margin-bottom: .75rem; }
.calc-hero p  { font-size: 1.05rem; color: rgba(255,255,255,.85); max-width: 600px; margin-inline: auto; }

/* Calculator Widget */
.calc-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  max-width: 900px;
  margin-inline: auto;
}

.calc-widget {
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--shadow-lg);
}
.calc-widget h2 { font-size: 1.15rem; margin-bottom: 1.5rem; color: var(--gray-900); }

/* Form */
.form-group { margin-bottom: 1.5rem; }
.form-group label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: .875rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: .5rem;
}
.form-group label .info-tip {
  font-size: .75rem;
  font-weight: 400;
  color: var(--gray-500);
}

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}
.input-prefix, .input-suffix {
  position: absolute;
  font-size: .9rem;
  font-weight: 600;
  color: var(--gray-500);
  z-index: 1;
}
.input-prefix { left: .9rem; }
.input-suffix { right: .9rem; }

.form-control {
  width: 100%;
  padding: .75rem 1rem;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: .95rem;
  color: var(--gray-800);
  background: var(--gray-50);
  outline: none;
  transition: var(--transition);
  appearance: none;
}
.form-control:focus {
  border-color: var(--primary);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(29,78,216,.1);
}
.has-prefix .form-control { padding-left: 2rem; }
.has-suffix .form-control { padding-right: 2.2rem; }

/* Range Slider */
.range-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 5px;
  border-radius: 3px;
  background: var(--gray-200);
  outline: none;
  margin-top: .65rem;
  cursor: pointer;
  transition: var(--transition);
}
.range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(29,78,216,.4);
  transition: var(--transition);
}
.range-slider::-webkit-slider-thumb:hover { transform: scale(1.2); }

/* Results Panel */
.result-card {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  border-radius: var(--radius-xl);
  padding: 2rem;
  color: #fff;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.result-card h2 { font-size: 1.15rem; color: rgba(255,255,255,.9); margin-bottom: 1.5rem; }

.result-primary {
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
  margin-bottom: 1.5rem;
}
.result-primary .rp-label { font-size: .8rem; text-transform: uppercase; letter-spacing: .06em; color: rgba(255,255,255,.65); margin-bottom: .5rem; }
.result-primary .rp-value { font-family: var(--font-heading); font-size: 2.25rem; font-weight: 800; color: var(--accent-light); }

.result-breakdown { flex: 1; }
.result-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: .85rem 0;
  border-bottom: 1px solid rgba(255,255,255,.1);
  font-size: .9rem;
}
.result-row:last-child { border-bottom: none; }
.result-row .label { color: rgba(255,255,255,.75); }
.result-row .value { font-weight: 700; color: #fff; }
.result-row .value.positive { color: var(--accent-light); }

/* Donut Chart */
.result-chart {
  margin: 1.5rem 0;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.donut-chart { position: relative; flex-shrink: 0; }
.donut-chart svg { transform: rotate(-90deg); }
.donut-center {
  position: absolute;
  inset: 0;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  font-family: var(--font-heading);
}
.donut-center .dc-label { font-size: .65rem; color: rgba(255,255,255,.6); text-transform: uppercase; letter-spacing: .05em; }
.donut-center .dc-value { font-size: .85rem; font-weight: 700; color: var(--accent-light); }
.chart-legend { flex: 1; font-size: .8rem; }
.legend-item { display: flex; align-items: center; gap: .5rem; margin-bottom: .5rem; color: rgba(255,255,255,.8); }
.legend-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }

.calc-actions {
  display: flex; gap: 1rem; flex-wrap: wrap;
  margin-top: 1.5rem;
}

/* Related Tools */
.related-tools {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1rem;
}
.related-tool {
  display: flex; align-items: center; gap: .75rem;
  padding: 1rem;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius);
  color: var(--gray-700);
  font-size: .875rem;
  font-weight: 500;
  transition: var(--transition);
}
.related-tool:hover { border-color: var(--primary); color: var(--primary); background: rgba(29,78,216,.04); transform: translateX(4px); }
.related-tool .r-icon {
  width: 36px; height: 36px;
  border-radius: .45rem;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; flex-shrink: 0;
}

/* ── Content Sections (SEO) ── */
.content-section { padding: 3rem 0; }
.content-prose h2 { font-size: 1.6rem; margin: 2rem 0 1rem; color: var(--gray-900); }
.content-prose h3 { font-size: 1.2rem; margin: 1.5rem 0 .75rem; color: var(--gray-800); }
.content-prose p  { color: var(--gray-700); line-height: 1.8; margin-bottom: 1rem; }
.content-prose ul { padding-left: 1.5rem; list-style: disc; margin-bottom: 1rem; }
.content-prose ul li { color: var(--gray-700); line-height: 1.75; margin-bottom: .4rem; }
.content-prose .formula-box {
  background: var(--gray-800);
  color: #a5f3fc;
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  font-family: 'Courier New', monospace;
  font-size: .95rem;
  overflow-x: auto;
  margin: 1.5rem 0;
}
.content-prose .example-box {
  background: rgba(16,185,129,.05);
  border: 1.5px solid rgba(16,185,129,.2);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin: 1.5rem 0;
}
.content-prose .example-box h4 { color: var(--accent-dark); margin-bottom: 1rem; }

/* ── Blog Article ── */
.article-hero {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  padding: 4rem 0;
  color: #fff;
  position: relative;
}
.article-hero::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 0; right: 0;
  height: 50px;
  background: var(--white);
  clip-path: ellipse(55% 100% at 50% 100%);
}
[data-theme="dark"] .article-hero::after { background: var(--gray-900); }
.article-hero h1 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); color: #fff; margin-bottom: 1rem; max-width: 800px; }
.article-meta { display: flex; flex-wrap: wrap; gap: 1.25rem; font-size: .875rem; color: rgba(255,255,255,.75); align-items: center; }
.article-meta span { display: flex; align-items: center; gap: .35rem; }

.article-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 3rem;
  align-items: flex-start;
}

.article-body {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--gray-700);
}
.article-body h2 { font-size: 1.5rem; margin: 2.5rem 0 1rem; color: var(--gray-900); padding-bottom: .5rem; border-bottom: 2px solid var(--gray-100); }
.article-body h3 { font-size: 1.2rem; margin: 2rem 0 .75rem; color: var(--gray-800); }
.article-body p  { margin-bottom: 1.25rem; }
.article-body ul, .article-body ol { margin: 1rem 0 1.5rem 1.5rem; }
.article-body li { margin-bottom: .5rem; }
.article-body blockquote {
  border-left: 4px solid var(--primary);
  padding: 1rem 1.5rem;
  background: var(--gray-50);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 1.5rem 0;
  font-style: italic;
  color: var(--gray-600);
}

/* Article Sidebar */
.article-sidebar { position: sticky; top: 90px; }
.sidebar-widget {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}
.sidebar-widget h3 { font-size: .95rem; color: var(--gray-900); margin-bottom: 1rem; }
.sidebar-toc a {
  display: block;
  padding: .4rem 0;
  font-size: .85rem;
  color: var(--gray-600);
  border-left: 2px solid transparent;
  padding-left: .75rem;
  margin-left: -.75rem;
  transition: var(--transition);
}
.sidebar-toc a:hover { color: var(--primary); border-color: var(--primary); }
.sidebar-tool-link {
  display: flex; align-items: center; gap: .75rem;
  padding: .65rem 0;
  color: var(--gray-700); font-size: .875rem;
  border-bottom: 1px solid var(--gray-100);
  transition: var(--transition);
}
.sidebar-tool-link:hover { color: var(--primary); }
.sidebar-tool-link:last-child { border-bottom: none; }
.sidebar-tool-link .s-icon { font-size: 1.1rem; }

/* ── Stats Strip ── */
.stats-strip {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  padding: 3rem 0;
  color: #fff;
}
.stats-strip-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
}
.stat-item .stat-value {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--accent-light);
  line-height: 1;
  margin-bottom: .4rem;
}
.stat-item .stat-label { font-size: .875rem; color: rgba(255,255,255,.75); }

/* ── Footer ── */
.footer {
  background: #0f172a;
  color: rgba(255,255,255,.8);
  padding: 4rem 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p { font-size: .875rem; line-height: 1.75; margin: 1rem 0 1.5rem; color: rgba(255,255,255,.6); max-width: 300px; }

.footer-logo {
  display: flex; align-items: center; gap: .6rem;
  font-family: var(--font-heading); font-size: 1.3rem; font-weight: 800; color: #fff;
}
.footer-logo .logo-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--primary-light), var(--accent));
  border-radius: .55rem;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; color: #fff;
}

.footer-social { display: flex; gap: .75rem; }
.social-btn {
  width: 38px; height: 38px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.12);
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,.7); font-size: .9rem;
  transition: var(--transition);
}
.social-btn:hover { background: var(--primary); border-color: var(--primary); color: #fff; transform: translateY(-2px); }

.footer-col h4 { font-size: .9rem; font-weight: 700; color: #fff; margin-bottom: 1.25rem; letter-spacing: .02em; }
.footer-links { display: flex; flex-direction: column; gap: .6rem; }
.footer-links a { font-size: .85rem; color: rgba(255,255,255,.6); transition: var(--transition); }
.footer-links a:hover { color: var(--accent-light); padding-left: 4px; }

.footer-divider { border-color: rgba(255,255,255,.08); margin: 0 0 1.5rem; }

.footer-bottom {
  display: flex; align-items: center; justify-content: space-between;
  padding-bottom: 1.5rem; flex-wrap: wrap; gap: 1rem;
  font-size: .8rem; color: rgba(255,255,255,.4);
}
.footer-bottom a { color: rgba(255,255,255,.5); }
.footer-bottom a:hover { color: var(--accent-light); }
.footer-disclaimer {
  font-size: .75rem;
  color: rgba(255,255,255,.35);
  text-align: center;
  padding-bottom: 1.5rem;
  max-width: 800px;
  margin-inline: auto;
  line-height: 1.6;
}

/* ── Back to Top ── */
.back-to-top {
  position: fixed;
  bottom: 2rem; right: 2rem;
  width: 44px; height: 44px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  font-size: 1.1rem;
  z-index: 999;
  transition: var(--transition);
  box-shadow: var(--shadow-md);
  opacity: 0; pointer-events: none; transform: translateY(12px);
}
.back-to-top.visible { opacity: 1; pointer-events: all; transform: translateY(0); }
.back-to-top:hover { background: var(--primary-dark); transform: translateY(-2px) !important; }

/* ── Contact Form ── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: flex-start;
}

.contact-info { display: flex; flex-direction: column; gap: 1.5rem; }
.contact-item {
  display: flex; gap: 1rem; align-items: flex-start;
  padding: 1.25rem;
  background: var(--gray-50);
  border-radius: var(--radius);
  border: 1px solid var(--gray-200);
}
.contact-item .c-icon {
  width: 44px; height: 44px; flex-shrink: 0;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 1.1rem;
}
.contact-item h4 { font-size: .9rem; color: var(--gray-900); margin-bottom: .25rem; }
.contact-item p  { font-size: .875rem; color: var(--gray-600); }

.contact-form { display: flex; flex-direction: column; gap: 1.25rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
textarea.form-control { resize: vertical; min-height: 140px; }

/* Select */
select.form-control { cursor: pointer; }

/* ── About Page ── */
.about-hero-img {
  height: 320px;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  border-radius: var(--radius-xl);
  display: flex; align-items: center; justify-content: center;
  font-size: 6rem;
  box-shadow: var(--shadow-xl);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 2rem;
}
.team-card {
  text-align: center;
  padding: 2rem 1.5rem;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}
.team-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.team-avatar {
  width: 80px; height: 80px;
  border-radius: 50%;
  margin: 0 auto 1rem;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem; color: #fff;
}
.team-card h3 { font-size: .95rem; color: var(--gray-900); }
.team-card p  { font-size: .825rem; color: var(--gray-500); margin-top: .25rem; }

/* ── Policy Page ── */
.policy-content h2 { font-size: 1.4rem; margin: 2rem 0 .75rem; color: var(--gray-900); }
.policy-content h3 { font-size: 1.1rem; margin: 1.5rem 0 .5rem; color: var(--gray-800); }
.policy-content p, .policy-content li { color: var(--gray-700); line-height: 1.8; margin-bottom: .75rem; }
.policy-content ul { padding-left: 1.5rem; list-style: disc; margin-bottom: 1rem; }
.policy-content .last-updated {
  display: inline-flex; align-items: center; gap: .5rem;
  background: var(--gray-100); padding: .5rem 1rem;
  border-radius: var(--radius-sm); font-size: .85rem; color: var(--gray-600);
  margin-bottom: 2rem;
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .hero-container { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero-visual { justify-content: center; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { position: static; }
  .stats-strip-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --section-py: 3.5rem; }
  .nav-menu, .nav-search { display: none; }
  .nav-toggle { display: flex; }

  .nav-menu.open {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    position: absolute;
    top: 70px; left: 0; right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    padding: 1rem;
    box-shadow: var(--shadow-lg);
    gap: .25rem;
  }

  .nav-dropdown-menu {
    position: static;
    opacity: 1;
    pointer-events: all;
    transform: none;
    box-shadow: none;
    border: none;
    background: var(--gray-50);
    border-radius: var(--radius);
    margin-top: .25rem;
    display: none;
  }
  .nav-dropdown.open .nav-dropdown-menu { display: block; }

  .hero { padding: 3.5rem 0 5rem; }
  .hero-title { font-size: 2rem; }
  .hero-stats { gap: 1.5rem; }
  .calc-container { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .stats-strip-grid { grid-template-columns: repeat(2, 1fr); }
  .tools-grid { grid-template-columns: 1fr 1fr; }
  .blog-grid { grid-template-columns: 1fr; }
  .hero-cta { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  .tools-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .stats-strip-grid { grid-template-columns: 1fr 1fr; }
  .hero-stats { flex-wrap: wrap; gap: 1rem; }
  .hero-card { max-width: 100%; }
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--gray-100); }
::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* ── Selection ── */
::selection { background: rgba(29,78,216,.2); color: var(--primary-dark); }

/* ── Print ── */
@media print {
  .navbar, .footer, .back-to-top { display: none; }
}

/* ── AdSense / Ad Spaces ── */
.ad-container {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 2rem 0;
}

.ad-label {
  font-size: .7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--gray-400);
  margin-bottom: .35rem;
  text-align: center;
}

/* Leaderboard 728x90 */
.ad-slot-leaderboard {
  width: 100%;
  max-width: 728px;
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* In-article / Rectangle 300x250 */
.ad-slot-rectangle {
  width: 300px;
  min-height: 250px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Sidebar 300x600 */
.ad-slot-sidebar {
  width: 300px;
  min-height: 250px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Responsive full-width */
.ad-slot-responsive {
  width: 100%;
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Placeholder shown before real AdSense code is added */
.ad-placeholder {
  width: 100%;
  height: 100%;
  min-height: inherit;
  background: var(--gray-50);
  border: 1.5px dashed var(--gray-300);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .8rem;
  font-weight: 600;
  color: var(--gray-400);
  padding: 1rem;
  text-align: center;
  letter-spacing: .03em;
  transition: var(--transition);
}

[data-theme="dark"] .ad-placeholder {
  background: var(--gray-100);
  border-color: var(--gray-200);
}

/* In-content ad strip */
.ad-strip {
  margin: 2.5rem 0;
  padding: 1rem 0;
  border-top: 1px solid var(--gray-200);
  border-bottom: 1px solid var(--gray-200);
}

/* Sidebar ad widget */
.sidebar-ad-widget {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 1rem;
  text-align: center;
}

[data-theme="dark"] .sidebar-ad-widget {
  background: var(--gray-100);
  border-color: var(--gray-200);
}

@media (max-width: 640px) {
  .ad-slot-leaderboard { max-width: 100%; min-height: 60px; }
  .ad-slot-rectangle   { width: 100%; min-height: 100px; }
  .ad-slot-sidebar     { width: 100%; min-height: 100px; }
}