/* ============================================================
   P4Product.com — Main Stylesheet
   Professional Amazon Seller Tool Site
   ============================================================ */

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

/* === CSS VARIABLES === */
:root {
  --primary:       #1D4ED8;
  --primary-dark:  #1E3A8A;
  --primary-light: #EFF6FF;
  --accent:        #F59E0B;
  --accent-dark:   #D97706;
  --success:       #059669;
  --danger:        #DC2626;
  --dark:          #0F172A;
  --gray-900:      #1E293B;
  --gray-700:      #334155;
  --gray-500:      #64748B;
  --gray-300:      #CBD5E1;
  --gray-100:      #F1F5F9;
  --gray-50:       #F8FAFC;
  --white:         #FFFFFF;
  --border:        #E2E8F0;
  --shadow-sm:     0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md:     0 4px 16px rgba(0,0,0,0.10), 0 2px 4px rgba(0,0,0,0.06);
  --shadow-lg:     0 12px 40px rgba(0,0,0,0.12), 0 4px 8px rgba(0,0,0,0.06);
  --radius-sm:     6px;
  --radius-md:     12px;
  --radius-lg:     20px;
  --font-body:     'Outfit', sans-serif;
  --font-heading:  'Outfit', sans-serif;
  --transition:    all 0.2s ease;
}

/* === 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);
  background: var(--white);
  color: var(--gray-700);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }
ul { list-style: none; }

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--dark);
  line-height: 1.25;
  font-weight: 700;
}
h1 { font-size: clamp(2rem, 5vw, 3.25rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
h4 { font-size: 1.15rem; }
p { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }

.lead {
  font-size: 1.15rem;
  color: var(--gray-500);
  line-height: 1.8;
}

/* === LAYOUT === */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}
.container-narrow { max-width: 800px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-sm { padding: 48px 0; }
.section-lg { padding: 110px 0; }

/* === HEADER / NAV === */
.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.logo-icon {
  width: 38px; height: 38px;
  background: var(--primary);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--white);
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: -0.5px;
}
.logo-text {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--dark);
  letter-spacing: -0.5px;
}
.logo-text span { color: var(--primary); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--gray-700);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.nav-links a:hover, .nav-links a.active {
  background: var(--primary-light);
  color: var(--primary);
}
.nav-dropdown { position: relative; }
.nav-dropdown > a::after {
  content: ' ▾';
  font-size: 0.7rem;
  opacity: 0.6;
}
.dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 240px;
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: var(--transition);
  z-index: 200;
}
.nav-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.dropdown-menu a {
  display: block;
  padding: 10px 14px;
  font-size: 0.88rem;
  border-radius: var(--radius-sm);
  color: var(--gray-700);
}
.dropdown-menu a:hover { background: var(--primary-light); color: var(--primary); }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
  background: none;
  border: none;
}
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: var(--transition);
}
.nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* === HERO === */
.hero {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, #2563EB 100%);
  padding: 96px 0 80px;
  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%3Ccircle cx='30' cy='30' r='4'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.hero-content { position: relative; z-index: 1; text-align: center; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.25);
  color: var(--white);
  padding: 6px 16px;
  border-radius: 99px;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 24px;
}
.hero h1 {
  color: var(--white);
  margin-bottom: 20px;
  font-weight: 800;
}
.hero .lead {
  color: rgba(255,255,255,0.82);
  max-width: 600px;
  margin: 0 auto 36px;
  font-size: 1.1rem;
}
.hero-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-top: 12px;
}
.hero-tool-link {
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.3);
  color: var(--white);
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}
.hero-tool-link:hover {
  background: rgba(255,255,255,0.22);
  color: var(--white);
  transform: translateY(-2px);
}

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-decoration: none;
}
.btn-primary {
  background: var(--primary);
  color: var(--white);
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(29,78,216,0.35);
}
.btn-secondary {
  background: var(--white);
  color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-secondary:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
}
.btn-accent {
  background: var(--accent);
  color: var(--white);
}
.btn-accent:hover {
  background: var(--accent-dark);
  color: var(--white);
  transform: translateY(-2px);
}
.btn-lg { padding: 15px 32px; font-size: 1.05rem; }
.btn-full { width: 100%; justify-content: center; }

/* === CARDS === */
.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
}
.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--primary);
}
.card-icon {
  width: 56px; height: 56px;
  border-radius: var(--radius-md);
  background: var(--primary-light);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
  font-size: 1.5rem;
}

/* === GRID === */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* === TOOL PAGE LAYOUT === */
.tool-hero {
  background: var(--gray-50);
  border-bottom: 1px solid var(--border);
  padding: 56px 0 48px;
}
.tool-hero h1 { font-size: clamp(1.7rem, 3.5vw, 2.5rem); margin-bottom: 14px; }
.tool-breadcrumb {
  font-size: 0.85rem;
  color: var(--gray-500);
  margin-bottom: 16px;
}
.tool-breadcrumb a { color: var(--gray-500); }
.tool-breadcrumb a:hover { color: var(--primary); }

.tool-layout { display: grid; grid-template-columns: 1fr 340px; gap: 32px; align-items: start; }

/* === CALCULATOR FORM === */
.calc-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.calc-header {
  background: var(--primary);
  color: var(--white);
  padding: 20px 28px;
}
.calc-header h2 {
  color: var(--white);
  font-size: 1.15rem;
  margin-bottom: 4px;
}
.calc-header p { color: rgba(255,255,255,0.8); font-size: 0.85rem; margin: 0; }
.calc-body { padding: 28px; }

.form-group { margin-bottom: 20px; }
.form-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 7px;
}
.form-label .help-tip {
  font-weight: 400;
  color: var(--gray-500);
  font-size: 0.8rem;
  display: block;
  margin-top: 2px;
}
.form-control {
  width: 100%;
  padding: 11px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: var(--font-body);
  color: var(--gray-900);
  background: var(--white);
  transition: var(--transition);
  appearance: none;
}
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(29,78,216,0.12);
}
.form-control::placeholder { color: var(--gray-300); }

.input-group { position: relative; }
.input-prefix, .input-suffix {
  position: absolute;
  top: 50%; transform: translateY(-50%);
  color: var(--gray-500);
  font-size: 0.95rem;
  font-weight: 500;
  pointer-events: none;
}
.input-prefix { left: 13px; }
.input-suffix { right: 13px; }
.input-group .form-control.has-prefix { padding-left: 30px; }
.input-group .form-control.has-suffix { padding-right: 36px; }

.form-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 24px 0;
}

/* === RESULTS PANEL === */
.results-panel {
  background: var(--gray-50);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-top: 24px;
  display: none;
}
.results-panel.visible { display: block; }

.results-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--gray-500);
  margin-bottom: 16px;
}
.result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}
.result-row:last-child { border-bottom: none; }
.result-label { color: var(--gray-500); }
.result-value { font-weight: 600; color: var(--gray-900); }
.result-value.positive { color: var(--success); }
.result-value.negative { color: var(--danger); }
.result-value.accent { color: var(--primary); }

.result-highlight {
  background: var(--primary);
  color: var(--white);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 16px;
}
.result-highlight .label { font-size: 0.9rem; color: rgba(255,255,255,0.85); }
.result-highlight .value { font-size: 1.5rem; font-weight: 800; color: var(--white); }

.disclaimer-notice {
  background: #FFF9E6;
  border-left: 3px solid var(--accent);
  padding: 12px 16px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.82rem;
  color: var(--gray-700);
  margin-top: 16px;
}
.disclaimer-notice strong { color: var(--accent-dark); }

/* === SIDEBAR === */
.sidebar { display: flex; flex-direction: column; gap: 20px; }
.sidebar-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
}
.sidebar-card h3 { font-size: 1rem; margin-bottom: 12px; }
.sidebar-card ul li {
  padding: 7px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.88rem;
  color: var(--gray-500);
}
.sidebar-card ul li:last-child { border-bottom: none; }
.sidebar-card ul li a { color: var(--gray-700); }
.sidebar-card ul li a:hover { color: var(--primary); }

/* === SECTION HEADINGS === */
.section-heading { text-align: center; margin-bottom: 52px; }
.section-heading .eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--primary);
  background: var(--primary-light);
  padding: 5px 14px;
  border-radius: 99px;
  margin-bottom: 14px;
}
.section-heading h2 { margin-bottom: 14px; }
.section-heading p { color: var(--gray-500); max-width: 580px; margin: 0 auto; }

/* === FEATURE LIST === */
.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 0;
  font-size: 0.95rem;
  color: var(--gray-700);
}
.feature-list li .check {
  width: 22px; height: 22px; min-width: 22px;
  background: #D1FAE5;
  color: var(--success);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
  margin-top: 2px;
}

/* === STATS BAR === */
.stats-bar {
  background: var(--dark);
  padding: 40px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  text-align: center;
  divide: 1px solid rgba(255,255,255,0.1);
}
.stat-item { padding: 16px; border-right: 1px solid rgba(255,255,255,0.1); }
.stat-item:last-child { border-right: none; }
.stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--white);
  display: block;
}
.stat-label { font-size: 0.82rem; color: rgba(255,255,255,0.55); margin-top: 4px; }

/* === BLOG === */
.blog-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}
.blog-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.blog-card-body { padding: 24px; }
.blog-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  padding: 3px 10px;
  border-radius: 99px;
  margin-bottom: 12px;
}
.blog-card h3 { font-size: 1.05rem; margin-bottom: 10px; }
.blog-card h3 a { color: var(--dark); }
.blog-card h3 a:hover { color: var(--primary); }
.blog-card p { font-size: 0.88rem; color: var(--gray-500); }
.blog-meta { font-size: 0.8rem; color: var(--gray-300); margin-top: 14px; }

/* === PAGE CONTENT === */
.page-hero {
  background: var(--gray-50);
  border-bottom: 1px solid var(--border);
  padding: 64px 0 52px;
}
.page-hero h1 { margin-bottom: 12px; }
.page-content { padding: 64px 0; }
.page-content h2 { font-size: 1.5rem; margin: 40px 0 14px; color: var(--dark); }
.page-content h3 { font-size: 1.15rem; margin: 28px 0 10px; color: var(--gray-900); }
.page-content ul, .page-content ol { margin: 14px 0 18px 24px; }
.page-content ul { list-style: disc; }
.page-content ol { list-style: decimal; }
.page-content li { margin-bottom: 8px; font-size: 0.97rem; color: var(--gray-700); }
.page-content p { font-size: 0.97rem; }

/* === TABS (for tool methodology sections) === */
.tabs { margin: 48px 0; }
.tab-buttons { display: flex; border-bottom: 2px solid var(--border); margin-bottom: 32px; gap: 4px; flex-wrap: wrap; }
.tab-btn {
  padding: 10px 20px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--gray-500);
  border: none;
  background: none;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: var(--transition);
  font-family: var(--font-body);
}
.tab-btn.active, .tab-btn:hover { color: var(--primary); border-bottom-color: var(--primary); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* === FAQ === */
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-question {
  width: 100%;
  padding: 18px 24px;
  background: var(--white);
  border: none;
  text-align: left;
  font-size: 0.97rem;
  font-weight: 600;
  color: var(--gray-900);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-body);
  transition: var(--transition);
}
.faq-question:hover { background: var(--gray-50); }
.faq-question .arrow {
  width: 24px; height: 24px;
  border-radius: 50%;
  background: var(--gray-100);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.7rem;
  color: var(--gray-500);
  transition: var(--transition);
  flex-shrink: 0;
}
.faq-question.open .arrow { background: var(--primary-light); color: var(--primary); transform: rotate(180deg); }
.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.2s ease;
}
.faq-answer.open { padding: 4px 24px 20px; max-height: 500px; }
.faq-answer p { font-size: 0.93rem; color: var(--gray-500); }

/* === INFO BOX === */
.info-box {
  background: var(--primary-light);
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 18px 22px;
  margin: 24px 0;
}
.info-box p { font-size: 0.93rem; color: var(--gray-700); margin: 0; }
.info-box strong { color: var(--primary-dark); }

.warning-box {
  background: #FFF9E6;
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 18px 22px;
  margin: 24px 0;
}
.warning-box p { font-size: 0.93rem; color: var(--gray-700); margin: 0; }

/* === CONTACT FORM === */
.contact-layout { display: grid; grid-template-columns: 1fr 360px; gap: 48px; }
.contact-form { display: grid; gap: 20px; }
.contact-info-item { display: flex; gap: 16px; margin-bottom: 28px; align-items: flex-start; }
.contact-info-icon {
  width: 44px; height: 44px; min-width: 44px;
  background: var(--primary-light);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  color: var(--primary);
}
.contact-info-text h4 { font-size: 0.92rem; margin-bottom: 4px; }
.contact-info-text p { font-size: 0.88rem; color: var(--gray-500); margin: 0; }

/* === ALERT MESSAGES === */
.alert {
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  margin-bottom: 20px;
  display: flex; align-items: flex-start; gap: 10px;
}
.alert-success { background: #D1FAE5; color: #065F46; border: 1px solid #A7F3D0; }
.alert-error   { background: #FEE2E2; color: #991B1B; border: 1px solid #FECACA; }

/* === FOOTER === */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,0.65);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand .logo-text { color: var(--white); }
.footer-brand p {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.5);
  margin: 14px 0 20px;
  line-height: 1.7;
}
.footer-col h4 {
  color: var(--white);
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: 16px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul a {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.5);
  transition: var(--transition);
}
.footer-col ul a:hover { color: var(--white); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 22px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.35);
  margin: 0;
}
.footer-disclaimer {
  background: rgba(255,255,255,0.04);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 16px 0;
  font-size: 0.78rem;
  color: rgba(255,255,255,0.3);
  line-height: 1.6;
}

/* === BREADCRUMB === */
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; color: var(--gray-500); margin-bottom: 16px; }
.breadcrumb a { color: var(--gray-500); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: var(--gray-300); }

/* === TABLE === */
.data-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; margin: 20px 0; }
.data-table th {
  background: var(--gray-100);
  padding: 11px 16px;
  text-align: left;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--gray-500);
  border-bottom: 2px solid var(--border);
}
.data-table td {
  padding: 11px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--gray-700);
}
.data-table tr:hover td { background: var(--gray-50); }
.data-table tr:last-child td { border-bottom: none; }

/* === BADGES === */
.badge {
  display: inline-flex; align-items: center;
  padding: 3px 10px;
  border-radius: 99px;
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-blue { background: var(--primary-light); color: var(--primary-dark); }
.badge-green { background: #D1FAE5; color: #065F46; }
.badge-amber { background: #FEF3C7; color: #92400E; }
.badge-red { background: #FEE2E2; color: #991B1B; }

/* === UTILITY === */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-4 { margin-top: 1rem; }
.mt-8 { margin-top: 2rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-8 { margin-bottom: 2rem; }
.hidden { display: none !important; }

/* === RESPONSIVE === */
@media (max-width: 1024px) {
  .tool-layout { grid-template-columns: 1fr; }
  .sidebar { flex-direction: row; flex-wrap: wrap; }
  .sidebar .sidebar-card { flex: 1; min-width: 240px; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-layout { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-links { display: none; flex-direction: column; position: absolute; top: 68px; left: 0; right: 0; background: var(--white); border-bottom: 1px solid var(--border); padding: 16px; gap: 4px; box-shadow: var(--shadow-md); }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 16px; border-radius: var(--radius-sm); }
  .nav-toggle { display: flex; }
  .dropdown-menu { position: static; box-shadow: none; border: none; border-radius: 0; background: var(--gray-50); opacity: 1; visibility: visible; transform: none; padding: 4px 8px; }
  .nav-dropdown > a::after { display: none; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .hero { padding: 64px 0 56px; }
  .section { padding: 56px 0; }
  .section-lg { padding: 72px 0; }
  .tool-hero { padding: 40px 0 32px; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .calc-body { padding: 20px 18px; }
  h1 { font-size: 1.8rem; }
  h2 { font-size: 1.5rem; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .hero-tools { flex-direction: column; align-items: center; }
  .hero-tool-link { width: 100%; text-align: center; }
}