:root {
  --bg-primary: #0b1120;
  --bg-secondary: #111827;
  --bg-card: #1e293b;
  --bg-input: #0f172a;
  --border-color: #334155;
  --text-primary: #f8fafc;
  --text-secondary: #a9b7cc;
  --accent-primary: #10b981;
  --accent-hover: #059669;
  --accent-blue: #3b82f6;
  --accent-amber: #f59e0b;
  --accent-purple: #8b5cf6;
  --danger: #ef4444;
  --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.4);
  --radius: 14px;
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-input: #f1f5f9;
  --border-color: #e2e8f0;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --shadow: 0 8px 20px -4px rgba(15, 23, 42, 0.08);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: color 0.2s;
}

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

/* Live Market Ticker */
.market-ticker {
  background: linear-gradient(90deg, #064e3b, #0f172a, #1e3a8a);
  color: #e2e8f0;
  font-size: 0.82rem;
  padding: 6px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.ticker-items {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  align-items: center;
}

.ticker-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
}

.ticker-val {
  color: #34d399;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
}

/* Navbar */
.navbar {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
}

.nav-container {
  max-width: 1340px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.brand-badge {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-blue));
  color: #fff;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.35);
}

.nav-links {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.nav-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  padding: 7px 13px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.nav-btn:hover, .nav-btn.active {
  color: var(--text-primary);
  background: var(--bg-card);
  border-color: var(--border-color);
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: 10px;
}

.lang-switch, .theme-btn, .config-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 7px 12px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s;
}

.lang-switch:hover, .theme-btn:hover, .config-btn:hover {
  border-color: var(--accent-primary);
}

/* Hero Banner */
.hero {
  background: radial-gradient(circle at top right, rgba(16, 185, 129, 0.14), transparent 50%),
              radial-gradient(circle at top left, rgba(59, 130, 246, 0.12), transparent 50%);
  border-bottom: 1px solid var(--border-color);
  padding: 36px 20px 28px;
  text-align: center;
}

.hero-inner {
  max-width: 920px;
  margin: 0 auto;
}

.hero h1 {
  font-size: clamp(1.75rem, 3.2vw, 2.55rem);
  font-weight: 800;
  margin-bottom: 10px;
  letter-spacing: -0.025em;
}

.hero p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 720px;
  margin: 0 auto 20px;
}

/* Search & Category Pills */
.search-bar-wrap {
  max-width: 560px;
  margin: 0 auto 20px;
  position: relative;
}

.search-input {
  width: 100%;
  padding: 13px 18px 13px 44px;
  border-radius: 999px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 0.98rem;
  outline: none;
  box-shadow: var(--shadow);
  transition: border-color 0.2s;
}

.search-input:focus {
  border-color: var(--accent-primary);
}

.search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
}

.category-tabs {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}

.cat-pill {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 9px 16px;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.cat-pill.active, .cat-pill:hover {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: #fff;
}

/* Main Layout Grid */
.main-container {
  max-width: 1340px;
  margin: 26px auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 280px 1fr 310px;
  gap: 24px;
  flex: 1;
}

@media (max-width: 1120px) {
  .main-container {
    grid-template-columns: 260px 1fr;
  }
  .right-sidebar {
    grid-column: 1 / -1;
  }
}

@media (max-width: 820px) {
  .main-container {
    grid-template-columns: 1fr;
  }
}

/* Left Sidebar: Tool Directory */
.tool-menu {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 16px;
  height: fit-content;
  position: sticky;
  top: 78px;
}

.menu-group-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  margin: 14px 0 8px;
  font-weight: 700;
}

.menu-group-title:first-child {
  margin-top: 0;
}

.tool-link {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  text-align: left;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.18s;
  margin-bottom: 4px;
}

.tool-link:hover {
  background: rgba(16, 185, 129, 0.08);
  border-color: rgba(16, 185, 129, 0.25);
}

.tool-link.active {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.18), rgba(59, 130, 246, 0.12));
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  font-weight: 700;
}

.cpc-badge {
  margin-left: auto;
  font-size: 0.68rem;
  padding: 2px 6px;
  border-radius: 6px;
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  font-weight: 700;
}

/* Center Column: Active Calculator & SEO Content */
.calculator-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  margin-bottom: 24px;
}

.calc-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 22px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
  flex-wrap: wrap;
}

.calc-title-area h2 {
  font-size: 1.55rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.calc-title-area p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

@media (max-width: 680px) {
  .calc-grid {
    grid-template-columns: 1fr;
  }
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: flex;
  justify-content: space-between;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.form-control {
  width: 100%;
  padding: 11px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 0.98rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s;
}

.form-control:focus {
  border-color: var(--accent-primary);
}

.btn-calculate {
  width: 100%;
  padding: 13px 20px;
  background: linear-gradient(135deg, var(--accent-primary), #059669);
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
  transition: transform 0.15s, opacity 0.2s;
}

.btn-calculate:hover {
  opacity: 0.95;
  transform: translateY(-1px);
}

/* Results Panel */
.results-panel {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.result-highlight {
  text-align: center;
  padding: 16px;
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.12), rgba(59, 130, 246, 0.08));
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: 10px;
  margin-bottom: 16px;
}

.result-highlight .res-label {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  font-weight: 700;
}

.result-highlight .res-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-primary);
  margin: 4px 0;
  font-family: 'JetBrains Mono', monospace;
}

.result-highlight .res-sub {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.result-rows {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
}

.result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 10px;
  background: var(--bg-card);
  border-radius: 8px;
  border: 1px solid var(--border-color);
  font-size: 0.9rem;
}

.result-row strong {
  font-family: 'JetBrains Mono', monospace;
  color: var(--text-primary);
}

/* Native Affiliate CTA inside Calculator */
.affiliate-cta-box {
  margin-top: 14px;
  padding: 14px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.14), rgba(16, 185, 129, 0.12));
  border: 1px solid rgba(245, 158, 11, 0.4);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.affiliate-cta-text {
  font-size: 0.86rem;
}

.affiliate-cta-text strong {
  color: #fbbf24;
  display: block;
  font-size: 0.92rem;
}

.btn-affiliate {
  background: #f59e0b;
  color: #0f172a;
  font-weight: 800;
  font-size: 0.84rem;
  padding: 8px 14px;
  border-radius: 8px;
  white-space: nowrap;
  transition: transform 0.15s;
}

.btn-affiliate:hover {
  color: #0f172a;
  transform: scale(1.03);
}

/* AdSense / Ad Units */
.ad-slot {
  background: var(--bg-secondary);
  border: 1px dashed var(--border-color);
  border-radius: 12px;
  padding: 14px;
  text-align: center;
  margin-bottom: 22px;
  position: relative;
  overflow: hidden;
}

.ad-label {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  margin-bottom: 6px;
  display: block;
}

/* SEO Rich Content Article inside Tool */
.seo-article {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 28px;
  margin-bottom: 24px;
}

.seo-article h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.seo-article h4 {
  font-size: 1.08rem;
  margin: 18px 0 8px;
  color: var(--accent-primary);
}

.seo-article p {
  color: var(--text-secondary);
  margin-bottom: 12px;
  font-size: 0.96rem;
}

.formula-box {
  background: var(--bg-input);
  border-left: 4px solid var(--accent-blue);
  padding: 14px 18px;
  border-radius: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  margin: 14px 0;
  color: var(--text-primary);
}

.faq-item {
  border-bottom: 1px solid var(--border-color);
  padding: 12px 0;
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-q {
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
  font-size: 0.96rem;
}

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

/* Right Sidebar */
.right-sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.widget-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 18px;
}

.widget-title {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
}

.partner-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.partner-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  transition: border-color 0.2s;
}

.partner-item:hover {
  border-color: var(--accent-primary);
}

.partner-info strong {
  display: block;
  font-size: 0.88rem;
  color: var(--text-primary);
}

.partner-info span {
  font-size: 0.76rem;
  color: var(--accent-primary);
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 36px 20px 24px;
  margin-top: 40px;
}

.footer-inner {
  max-width: 1340px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.footer-links button, .footer-links a {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 0.88rem;
  cursor: pointer;
}

.footer-links button:hover, .footer-links a:hover {
  color: var(--accent-primary);
}

/* Modals (Legal Pages & Monetization Config) */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}

.modal-backdrop.open {
  display: flex;
}

.modal-content {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  max-width: 760px;
  width: 100%;
  max-height: 88vh;
  overflow-y: auto;
  padding: 28px;
  box-shadow: var(--shadow);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.modal-close {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  width: 34px;
  height: 34px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1.1rem;
}

/* Cookie Banner (GDPR / LGPD Required by AdSense) */
.cookie-banner {
  position: fixed;
  bottom: 16px;
  left: 16px;
  right: 16px;
  max-width: 960px;
  margin: 0 auto;
  background: var(--bg-secondary);
  border: 1px solid var(--accent-primary);
  border-radius: 12px;
  padding: 16px 20px;
  box-shadow: var(--shadow);
  display: none;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  z-index: 900;
  flex-wrap: wrap;
}

.cookie-banner.show {
  display: flex;
}

.cookie-text {
  font-size: 0.85rem;
  color: var(--text-secondary);
  flex: 1;
  min-width: 240px;
}

/* ===== UX improvements ===== */
a.nav-btn { text-decoration: none; display: inline-block; }
.nav-btn, .tool-link, .cat-pill, .lang-switch, .theme-btn, .btn-calculate, .btn-affiliate, .footer-links a {
  -webkit-tap-highlight-color: transparent;
}
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}
select.form-control { cursor: pointer; appearance: auto; }

.new-badge {
  background: #10b981; color: #052e1d; font-size: 0.62rem; font-weight: 800;
  padding: 2px 6px; border-radius: 999px; letter-spacing: 0.4px; flex: 0 0 auto;
}
.howto-box {
  margin: 4px 0 14px; padding: 11px 14px; border-radius: 10px; font-size: 0.88rem; line-height: 1.5;
  background: rgba(59, 130, 246, 0.10); border: 1px solid rgba(59, 130, 246, 0.35); color: var(--text-primary);
}
.explain-box {
  margin-top: 12px; padding: 10px 12px; border-radius: 10px; font-size: 0.82rem; line-height: 1.5;
  background: rgba(148, 163, 184, 0.10); border: 1px dashed var(--border-color); color: var(--text-secondary);
}
.explain-box strong { color: var(--text-primary); }
.sponsored-tag {
  flex: 0 0 100%; font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.6px;
  font-weight: 700; color: var(--text-secondary);
}
.sponsored-note { font-size: 0.7rem; color: var(--text-secondary); margin: -4px 0 8px; text-transform: uppercase; letter-spacing: 0.5px; }
.preset-group { margin-bottom: 14px; }
.preset-group-title { font-size: 0.82rem; font-weight: 700; color: var(--text-primary); margin-bottom: 6px; }
.preset-link-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 6px; }
.preset-link-grid a {
  display: block; padding: 8px 12px; border-radius: 8px; font-size: 0.84rem; font-weight: 600;
  background: var(--bg-card); border: 1px solid var(--border-color); color: var(--accent-primary); text-decoration: none;
  transition: border-color 0.2s, transform 0.15s;
}
.preset-link-grid a:hover { border-color: var(--accent-primary); transform: translateY(-1px); }

/* Static legal / about pages */
.legal-page { max-width: 820px; margin: 30px auto; padding: 0 20px 40px; line-height: 1.7; }
.legal-page h1 { font-size: 1.8rem; margin-bottom: 6px; }
.legal-page h2 { font-size: 1.15rem; margin: 26px 0 8px; color: var(--accent-primary); }
.legal-page p, .legal-page li { color: var(--text-secondary); font-size: 0.96rem; }
.legal-page .lang-block { margin-top: 34px; padding-top: 22px; border-top: 1px solid var(--border-color); }
.legal-page a { color: var(--accent-primary); }

/* ===== Partnerships & Corporate Sponsors ===== */
.nav-btn-highlight {
  background: rgba(16, 185, 129, 0.14) !important;
  border: 1px solid rgba(16, 185, 129, 0.4) !important;
  color: var(--accent-primary) !important;
}
.nav-btn-highlight:hover {
  background: rgba(16, 185, 129, 0.25) !important;
}
.sponsor-card {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.08), rgba(59, 130, 246, 0.08));
  border: 1px dashed rgba(16, 185, 129, 0.5) !important;
}
.btn-sponsor-contact {
  width: 100%;
  background: linear-gradient(135deg, #10b981, #059669);
  color: #ffffff;
  border: none;
  padding: 8px 12px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.8rem;
  cursor: pointer;
  transition: transform 0.15s, opacity 0.2s;
}
.btn-sponsor-contact:hover {
  opacity: 0.92;
  transform: translateY(-1px);
}