/* ============================================================
   SecNetPlus - Redesigned Stylesheet
   Sophisticated, modern financial tools platform
   ============================================================ */

/* --- Google Fonts Import --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&family=JetBrains+Mono:wght@500;700&display=swap');

/* --- CSS Variables / Theme --- */
:root {
  --color-bg: #f0f2f7;
  --color-surface: #ffffff;
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-primary-deep: #1e3a5f;
  --color-primary-glow: rgba(37, 99, 235, 0.12);
  --color-accent: #10b981;
  --color-accent-dark: #059669;
  --color-accent-glow: rgba(16, 185, 129, 0.12);
  --color-amber: #f59e0b;
  --color-rose: #f43f5e;
  --color-violet: #7c3aed;
  --color-cyan: #06b6d4;
  --color-text: #1e293b;
  --color-text-secondary: #475569;
  --color-text-muted: #94a3b8;
  --color-border: #e2e8f0;
  --color-border-light: #f1f5f9;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 25px -5px rgba(0,0,0,0.1), 0 4px 10px -6px rgba(0,0,0,0.05);
  --shadow-xl: 0 20px 40px -12px rgba(0,0,0,0.15);
  --shadow-card: 0 0 0 1px rgba(0,0,0,0.03), 0 2px 4px rgba(0,0,0,0.04), 0 12px 24px rgba(0,0,0,0.06);
  --shadow-glow: 0 0 40px rgba(37, 99, 235, 0.15);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --max-width: 1200px;
  --header-height: 68px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Cascadia Code', 'Consolas', monospace;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  background-image:
    radial-gradient(ellipse 80% 60% at 50% -20%, rgba(37, 99, 235, 0.04), transparent),
    radial-gradient(ellipse 60% 50% at 80% 80%, rgba(124, 58, 237, 0.03), transparent);
  color: var(--color-text);
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-dark); }
img { max-width: 100%; display: block; }

/* --- Header --- */
.site-header {
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(226,232,240,0.6);
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
}
.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.header-nav { display: flex; align-items: center; gap: 6px; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1002;
  order: 10;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all 0.3s;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-logo img {
    height: 5vh;
    display: block;
    filter: drop-shadow(0 2px 8px rgba(255, 255, 255, 0.5));
    transition: transform 0.3s ease;
}

/* Mobile nav overlay */
.nav-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.4);
  z-index: 998;
}
.nav-overlay.show { display: block; }
.nav-link {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 10px;
  transition: all var(--transition);
  white-space: nowrap;
  letter-spacing: -0.01em;
}
.nav-link:hover { color: var(--color-primary); background: var(--color-primary-glow); }
.nav-link.active { color: var(--color-primary); background: var(--color-primary-glow); font-weight: 600; }

.nav-dropdown { position: relative; }
.dropdown-arrow { font-size: 0.55rem; margin-left: 3px; vertical-align: middle; opacity: 0.5; }
.dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  min-width: 240px;
  padding: 8px;
  list-style: none;
  z-index: 1001;
}
.dropdown-menu.show { display: block; animation: fadeInUp 0.2s ease-out; }
.dropdown-menu li a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  color: var(--color-text);
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: 10px;
  transition: all var(--transition);
}
.dropdown-menu li a:hover { background: var(--color-primary-glow); color: var(--color-primary); }

.header-logo a {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}
.logo-icon {
  width: 34px;
  height: 34px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-violet));
  color: #fff;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 800;
}
.logo-highlight {
  background: linear-gradient(135deg, var(--color-primary), var(--color-violet));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- Main Content --- */
.main-content {
  flex: 1;
  max-width: var(--max-width);
  width: 100%;
  margin: 0 auto;
  padding: 36px 28px 56px;
}

/* --- Hero Section --- */
.hero {
  text-align: center;
  padding: 60px 40px 48px;
  background: linear-gradient(160deg, #f0f5ff 0%, #f8faff 30%, #f5f0ff 70%, #f0f7ff 100%);
  border-radius: var(--radius-xl);
  margin-bottom: 44px;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(37,99,235,0.08);
}
.hero::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(37,99,235,0.06) 0%, transparent 70%);
  border-radius: 50%;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -60px;
  left: -60px;
  width: 250px;
  height: 250px;
  background: radial-gradient(circle, rgba(124,58,237,0.05) 0%, transparent 70%);
  border-radius: 50%;
}
.hero .hero-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--color-primary), var(--color-violet));
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 20px;
}
.hero h1 {
  font-size: 2.6rem;
  font-weight: 900;
  color: var(--color-text);
  margin-bottom: 16px;
  line-height: 1.2;
  letter-spacing: -0.03em;
  position: relative;
  z-index: 1;
}
.hero h1 .highlight {
  background: linear-gradient(135deg, var(--color-primary), var(--color-violet));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  max-width: 580px;
  margin: 0 auto 8px;
  position: relative;
  z-index: 1;
}
.hero .hero-actions {
  margin-top: 24px;
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

/* --- Section Titles --- */
.section-title {
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 10px;
  color: var(--color-text);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 12px;
}
.section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
  margin-top: 4px;
}
.section-subtitle {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 28px;
  font-weight: 500;
}

/* --- Tool Cards Grid --- */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
  margin-bottom: 52px;
}
.tool-card {
  background: var(--color-surface);
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.tool-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  opacity: 0;
  transition: opacity 0.35s;
}
.tool-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}
.tool-card:hover::before { opacity: 1; }
.tool-card:hover .tool-card-icon { transform: scale(1.08); }
.tool-card:not(.featured):hover { border-color: var(--color-border); }
.tool-card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 18px;
  transition: transform 0.35s;
}
.tool-card-icon.tax { background: linear-gradient(135deg, #dbeafe, #bfdbfe); color: #2563eb; }
.tool-card-icon.freelance { background: linear-gradient(135deg, #d1fae5, #a7f3d0); color: #059669; }
.tool-card-icon.overtime { background: linear-gradient(135deg, #fef3c7, #fde68a); color: #d97706; }
.tool-card-icon.severance { background: linear-gradient(135deg, #fee2e2, #fecaca); color: #dc2626; }
.tool-card-icon.pension { background: linear-gradient(135deg, #ede9fe, #ddd6fe); color: #7c3aed; }
.tool-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-text);
  letter-spacing: -0.01em;
}
.tool-card p {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
  line-height: 1.6;
}
.tool-card .card-link {
  font-size: 0.85rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--transition);
}
.tool-card:hover .card-link { gap: 8px; }

/* Featured Card */
.tool-card.featured {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 36px;
  background: linear-gradient(135deg, #f0f5ff 0%, #faf5ff 100%);
  border: 2px solid rgba(37,99,235,0.12);
}
.tool-card.featured .tool-card-icon {
  width: 72px;
  height: 72px;
  font-size: 2.2rem;
  margin-bottom: 0;
  flex-shrink: 0;
  border-radius: 18px;
}
.tool-card.featured .card-content { flex: 1; }
.tool-card.featured h3 { font-size: 1.35rem; }
.tool-card.featured .badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  font-size: 0.68rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

/* --- Intro Section --- */
.intro-section {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 40px;
  margin-bottom: 44px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border-light);
}
.intro-section h2 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.intro-section p {
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 14px;
  font-size: 0.95rem;
}
.features-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin-top: 24px;
}
.features-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  font-weight: 500;
  padding: 12px 16px;
  background: var(--color-border-light);
  border-radius: 12px;
}
.features-list li .feat-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  flex-shrink: 0;
}
.features-list li:nth-child(1) .feat-icon { background: #dbeafe; color: #2563eb; }
.features-list li:nth-child(2) .feat-icon { background: #d1fae5; color: #059669; }
.features-list li:nth-child(3) .feat-icon { background: #ede9fe; color: #7c3aed; }
.features-list li:nth-child(4) .feat-icon { background: #fef3c7; color: #d97706; }
.features-list li:nth-child(5) .feat-icon { background: #fee2e2; color: #dc2626; }
.features-list li:nth-child(6) .feat-icon { background: #cffafe; color: #0891b2; }

/* --- Quick Preview Grid --- */
.quick-previews {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-bottom: 20px;
}
.mini-calc {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border-light);
  transition: box-shadow var(--transition), transform var(--transition);
}
.mini-calc:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}
.mini-calc .mini-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.mini-calc .mini-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}
.mini-calc .mini-icon.tax { background: #dbeafe; color: #2563eb; }
.mini-calc .mini-icon.freelance { background: #d1fae5; color: #059669; }
.mini-calc .mini-icon.overtime { background: #fef3c7; color: #d97706; }
.mini-calc .mini-icon.severance { background: #fee2e2; color: #dc2626; }
.mini-calc .mini-icon.pension { background: #ede9fe; color: #7c3aed; }
.mini-calc .mini-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em;
}
.mini-calc .mini-result {
  margin-top: 14px;
  padding: 12px 16px;
  background: var(--color-border-light);
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
}
.mini-calc .mini-result strong { color: var(--color-primary); }
.mini-calc .form-group { margin-bottom: 10px; }
.mini-calc .form-group label { font-size: 0.78rem; font-weight: 600; color: var(--color-text-secondary); margin-bottom: 3px; display: block; }

/* --- Calculator Container --- */
.calc-container { max-width: 820px; margin: 0 auto; }
.calc-header {
  text-align: center;
  margin-bottom: 36px;
}
.calc-header h1 {
  font-size: 2rem;
  font-weight: 900;
  margin-bottom: 10px;
  letter-spacing: -0.03em;
}
.calc-header p { color: var(--color-text-secondary); font-size: 0.95rem; max-width: 560px; margin: 0 auto; }
.calc-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border-light);
}
.calc-card h2 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--color-border-light);
  display: flex;
  align-items: center;
  gap: 8px;
}
.calc-card h2::before {
  content: '';
  width: 4px;
  height: 20px;
  background: var(--color-primary);
  border-radius: 2px;
}

/* --- Form Elements --- */
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}
.form-group .input-hint { display: block; font-size: 0.76rem; color: var(--color-text-muted); margin-top: 3px; font-weight: 400; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
input[type="number"], input[type="text"], select {
  width: 100%;
  padding: 11px 14px;
  font-size: 0.925rem;
  font-family: var(--font-sans);
  border: 1.5px solid var(--color-border);
  border-radius: 10px;
  background: #fafbfc;
  color: var(--color-text);
  transition: all var(--transition);
  outline: none;
}
input[type="number"]:focus, input[type="text"]:focus, select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-primary-glow);
  background: #fff;
}
.input-with-prefix, .input-with-suffix { position: relative; }
.input-with-prefix .prefix, .input-with-suffix .suffix {
  position: absolute; top: 50%; transform: translateY(-50%);
  font-size: 0.925rem; color: var(--color-text-muted); font-weight: 600; pointer-events: none;
}
.input-with-prefix .prefix { left: 14px; }
.input-with-suffix .suffix { right: 14px; }
.input-with-prefix input { padding-left: 32px; }
.input-with-suffix input { padding-right: 32px; }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px 28px;
  font-size: 0.925rem;
  font-weight: 600;
  font-family: var(--font-sans);
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.btn:active { transform: scale(0.96); }
.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  box-shadow: 0 4px 14px rgba(37,99,235,0.3);
}
.btn-primary:hover {
  box-shadow: 0 6px 20px rgba(37,99,235,0.4);
  transform: translateY(-1px);
  color: #fff;
}
.btn-outline {
  background: #fff;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}
.btn-outline:hover { background: var(--color-primary-glow); color: var(--color-primary-dark); }
.btn-white { background: #fff; color: var(--color-primary); box-shadow: var(--shadow-sm); }
.btn-white:hover { box-shadow: var(--shadow-md); transform: translateY(-1px); }
.btn-sm { padding: 8px 16px; font-size: 0.82rem; border-radius: 8px; }
.btn-block { width: 100%; }

/* --- Results Panel --- */
.results-panel {
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-top: 24px;
  display: none;
}
.results-panel.visible { display: block; animation: fadeInUp 0.4s ease-out; }
.results-panel h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 18px;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 8px;
}
.result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 13px 0;
  border-bottom: 1px solid rgba(226,232,240,0.6);
}
.result-row:last-child { border-bottom: none; }
.result-label { font-size: 0.875rem; color: var(--color-text-secondary); font-weight: 500; }
.result-value {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  font-family: var(--font-mono);
}
.result-value.positive { color: var(--color-accent); }
.result-value.negative { color: var(--color-rose); }
.result-value.highlight { color: var(--color-primary); font-size: 1.15rem; }
.result-note {
  margin-top: 18px;
  padding: 14px 16px;
  background: #fffbeb;
  border: 1px solid #fde68a;
  border-radius: 10px;
  font-size: 0.8rem;
  color: #92400e;
  line-height: 1.6;
}
.result-note.info {
  background: #eff6ff;
  border-color: #bfdbfe;
  color: #1e40af;
}

/* --- Tabs --- */
.tabs { display: flex; border-bottom: 2px solid var(--color-border-light); margin-bottom: 24px; gap: 4px; }
.tab-btn {
  padding: 10px 22px;
  font-size: 0.875rem;
  font-weight: 600;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  color: var(--color-text-secondary);
  transition: all var(--transition);
  font-family: var(--font-sans);
  border-radius: 10px 10px 0 0;
}
.tab-btn.active { color: var(--color-primary); border-bottom-color: var(--color-primary); }
.tab-btn:hover { color: var(--color-primary); background: var(--color-primary-glow); }
.tab-pane { display: none; }
.tab-pane.active { display: block; animation: fadeInUp 0.3s ease-out; }

/* --- Toggle Group --- */
.toggle-group { display: flex; gap: 10px; margin-bottom: 18px; }
.toggle-option {
  flex: 1;
  padding: 11px 16px;
  text-align: center;
  border: 2px solid var(--color-border);
  border-radius: 10px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  background: #fafbfc;
  transition: all var(--transition);
}
.toggle-option.selected { border-color: var(--color-primary); color: var(--color-primary); background: var(--color-primary-glow); }

/* --- Content Sections (Usage Examples & FAQ) --- */
.content-section {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-top: 32px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border-light);
}
.content-section h2 {
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 10px;
}
.example-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
  margin-bottom: 20px;
}
.example-card {
  background: var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 20px;
  border-left: 3px solid var(--color-primary);
}
.example-card h4 {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 6px;
}
.example-card p { font-size: 0.85rem; color: var(--color-text-secondary); line-height: 1.6; margin-bottom: 4px; }
.example-card .example-step {
  display: flex;
  gap: 8px;
  margin-top: 10px;
  font-size: 0.82rem;
  color: var(--color-text-secondary);
}
.example-card .step-num {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.example-card .example-result {
  margin-top: 12px;
  padding: 10px 14px;
  background: #fff;
  border-radius: 8px;
  font-weight: 700;
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-size: 0.9rem;
}
.example-card:nth-child(2) { border-left-color: var(--color-accent); }
.example-card:nth-child(2) h4 { color: var(--color-accent); }
.example-card:nth-child(2) .step-num { background: var(--color-accent); }
.example-card:nth-child(2) .example-result { color: var(--color-accent); }
.example-card:nth-child(3) { border-left-color: var(--color-violet); }
.example-card:nth-child(3) h4 { color: var(--color-violet); }
.example-card:nth-child(3) .step-num { background: var(--color-violet); }
.example-card:nth-child(3) .example-result { color: var(--color-violet); }

/* FAQ Accordion */
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition);
}
.faq-item:hover { border-color: var(--color-primary); }
.faq-question {
  width: 100%;
  text-align: left;
  padding: 16px 20px;
  background: #fafbfc;
  border: none;
  font-size: 0.925rem;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-sans);
  transition: all var(--transition);
}
.faq-question:hover { background: var(--color-primary-glow); }
.faq-question .faq-icon {
  font-size: 1.2rem;
  transition: transform 0.3s;
  color: var(--color-text-muted);
  flex-shrink: 0;
}
.faq-item.open .faq-question { color: var(--color-primary); background: var(--color-primary-glow); }
.faq-item.open .faq-question .faq-icon { transform: rotate(45deg); color: var(--color-primary); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 20px;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}
.faq-item.open .faq-answer { max-height: 400px; padding: 0 20px 18px; }

/* --- Breadcrumb --- */
.breadcrumb {
  font-size: 0.825rem;
  color: var(--color-text-muted);
  margin-bottom: 24px;
  padding: 8px 0;
}
.breadcrumb a { color: var(--color-text-muted); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb span { margin: 0 8px; color: var(--color-border); }

/* --- Page Content --- */
.page-content {
  max-width: 840px;
  margin: 0 auto;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border-light);
  overflow-x: hidden;
}
.page-content h1 {
  font-size: 1.9rem;
  font-weight: 900;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--color-border-light);
  letter-spacing: -0.03em;
}
.page-content h2 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-top: 32px;
  margin-bottom: 14px;
  letter-spacing: -0.02em;
}
.page-content h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-top: 24px;
  margin-bottom: 10px;
}
.page-content p { color: var(--color-text-secondary); line-height: 1.8; margin-bottom: 16px; }
.page-content ul, .page-content ol { color: var(--color-text-secondary); margin-left: 22px; margin-bottom: 16px; line-height: 1.8; }
.page-content li { margin-bottom: 8px; }
.page-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 0.85rem;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
}
.page-content table th, .page-content table td {
  border: 1px solid var(--color-border-light);
  padding: 12px 16px;
  text-align: left;
}
.page-content table th { background: #f8fafc; font-weight: 700; color: var(--color-text); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.5px; }
.page-content table td { color: var(--color-text-secondary); }
/* Responsive table scroll on mobile */
.page-content .table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 20px 0;
}
@media (max-width: 768px) {
  .page-content .table-wrap {
    margin: 20px -24px;
    padding: 0 24px;
    width: calc(100% + 48px);
  }
  .page-content table { font-size: 0.76rem; }
  .page-content table th, .page-content table td { padding: 8px 10px; white-space: nowrap; }
  .page-content table th { font-size: 0.7rem; }
}
.page-content .last-updated {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-top: 36px;
  padding-top: 18px;
  border-top: 1px solid var(--color-border-light);
}

/* Contact Box */
.contact-info-box {
  background: linear-gradient(135deg, #eff6ff, #f0f9ff);
  border: 1px solid rgba(37,99,235,0.15);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
}
.contact-info-box .email-icon { font-size: 3rem; margin-bottom: 14px; }
.contact-info-box .email-display {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-primary);
  word-break: break-all;
  font-family: var(--font-mono);
}

/* --- Footer --- */
.site-footer {
  background: #1e293b;
  color: #cbd5e1;
  padding: 48px 28px 24px;
  margin-top: auto;
}
.footer-inner { max-width: var(--max-width); margin: 0 auto; }
.footer-brand { margin-bottom: 32px; }
.footer-brand .logo-text { font-size: 1.15rem; font-weight: 800; color: #fff; }
.footer-tagline { margin-top: 8px; font-size: 0.85rem; color: #94a3b8; }
.footer-links { display: flex; gap: 80px; margin-bottom: 32px; flex-wrap: wrap; }
.footer-col h4 {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: #64748b;
  margin-bottom: 14px;
}
.footer-col a { display: block; font-size: 0.85rem; color: #94a3b8; padding: 5px 0; transition: color var(--transition); }
.footer-col a:hover { color: #fff; }
.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.08);
  text-align: center;
  font-size: 0.78rem;
  color: #64748b;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .header-inner { padding: 0 16px; }
  .hamburger { display: flex; }

  /* Mobile nav: hidden by default, slide in from right when open */
  .header-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    max-width: 80vw;
    height: 100vh;
    background: var(--color-surface);
    flex-direction: column;
    align-items: flex-start;
    padding: 80px 24px 24px;
    gap: 4px;
    z-index: 999;
    transition: right 0.3s ease;
    box-shadow: var(--shadow-xl);
    overflow-y: auto;
  }
  .header-nav.open { right: 0; }
  .header-nav .nav-link {
    width: 100%;
    padding: 12px 16px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 10px;
  }
  .header-nav .nav-dropdown {
    width: 100%;
  }
  .header-nav .nav-dropdown .dropdown-toggle {
    width: 100%;
    display: flex;
    justify-content: space-between;
  }
  .header-nav .dropdown-menu {
    position: static;
    box-shadow: none;
    border: none;
    background: transparent;
    padding: 0 0 0 16px;
    min-width: auto;
  }
  .header-nav .dropdown-menu li a {
    font-size: 0.85rem;
    padding: 10px 14px;
    font-weight: 500;
  }
  .nav-link { padding: 6px 10px; font-size: 0.78rem; }
  .hero { padding: 40px 20px 32px; }
  .hero h1 { font-size: 1.7rem; }
  .tools-grid, .quick-previews { grid-template-columns: 1fr; }
  .tool-card.featured { flex-direction: column; text-align: center; gap: 14px; }
  .form-row, .form-row-3 { grid-template-columns: 1fr; }
  .footer-links { gap: 36px; }
  .main-content { padding: 20px 16px 36px; }
  .calc-card, .content-section, .page-content { padding: 24px; }
  .example-grid { grid-template-columns: 1fr; }
  .intro-section { padding: 28px; }
}
@media (max-width: 480px) {
  .header-logo .logo-text { font-size: 1rem; }
  .hero h1 { font-size: 1.4rem; }
  .hero { padding: 32px 16px 28px; }
  .tabs { flex-direction: column; gap: 4px; border-bottom: none; }
  .tab-btn { border: 1px solid var(--color-border); border-radius: 8px; }
  .tab-btn.active { border-color: var(--color-primary); background: var(--color-primary-glow); }
  .mini-calc { padding: 18px; }
}

/* --- Blog --- */
.blog-header {
  text-align: center;
  margin-bottom: 30px;
}
.blog-header h1 {
  font-size: 2.1rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: 10px;
}
.blog-header p {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
  max-width: 620px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Search */
.blog-search {
  margin-bottom: 32px;
  position: relative;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}
.blog-search input {
  width: 100%;
  padding: 13px 48px 13px 18px;
  font-size: 0.95rem;
  font-family: var(--font-sans);
  border: 2px solid var(--color-border);
  border-radius: 14px;
  background: var(--color-surface);
  color: var(--color-text);
  outline: none;
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
}
.blog-search input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-primary-glow), var(--shadow-md);
}
.blog-search .search-icon {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.15rem;
  color: var(--color-text-muted);
  pointer-events: none;
  transition: color var(--transition);
}
.blog-search input:focus ~ .search-icon { color: var(--color-primary); }
.blog-search .search-clear {
  position: absolute;
  right: 40px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.1rem;
  color: var(--color-text-muted);
  cursor: pointer;
  border: none;
  background: none;
  display: none;
  padding: 4px;
  line-height: 1;
}
.blog-search .search-clear.visible { display: block; }

.blog-article-count {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  font-weight: 600;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border-light);
}
.no-results {
  text-align: center;
  padding: 48px 20px;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* Blog Grid */
.blog-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 36px;
}
.blog-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 26px 28px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border-light);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.blog-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-border);
}
.blog-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  opacity: 0;
  transition: opacity var(--transition);
}
.blog-card:hover::after { opacity: 1; }
.blog-card:nth-child(5n+1)::after { background: linear-gradient(90deg, #2563eb, #7c3aed); }
.blog-card:nth-child(5n+2)::after { background: linear-gradient(90deg, #059669, #10b981); }
.blog-card:nth-child(5n+3)::after { background: linear-gradient(90deg, #d97706, #f59e0b); }
.blog-card:nth-child(5n+4)::after { background: linear-gradient(90deg, #dc2626, #f43f5e); }
.blog-card:nth-child(5n+5)::after { background: linear-gradient(90deg, #7c3aed, #a78bfa); }
.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.blog-card-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  padding: 3px 10px;
  border-radius: 20px;
}
.blog-card-tag.taxes { background: #dbeafe; color: #1d4ed8; }
.blog-card-tag.freelancing { background: #d1fae5; color: #047857; }
.blog-card-tag.career { background: #ede9fe; color: #6d28d9; }
.blog-card-tag.employment-law { background: #fee2e2; color: #b91c1c; }
.blog-card-tag.retirement { background: #fef3c7; color: #92400e; }
.blog-card-tag.personal-finance { background: #cffafe; color: #0e7490; }
.blog-card-date {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-weight: 500;
}
.blog-card h2 {
  font-size: 1.08rem;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.4;
  letter-spacing: -0.01em;
}
.blog-card h2 a { color: var(--color-text); text-decoration: none; }
.blog-card h2 a:hover { color: var(--color-primary); }
.blog-card p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.blog-card .card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--color-border-light);
}
.blog-card .read-time {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
}
.blog-card .read-more {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--transition);
}
.blog-card:hover .read-more { gap: 8px; }

/* Pagination */
.blog-pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
}
.blog-pagination button {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-sans);
  display: flex;
  align-items: center;
  justify-content: center;
}
.blog-pagination button:hover:not(:disabled) {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-glow);
}
.blog-pagination button.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.blog-pagination button:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}
.blog-pagination .page-nav {
  font-size: 1.1rem;
  width: 44px;
}

@media (max-width: 768px) {
  .blog-grid { grid-template-columns: 1fr; }
  .blog-card { padding: 20px; }
  .blog-card h2 { font-size: 1rem; }
  .blog-search { max-width: 100%; }
}

/* --- Article Page --- */
.article-container {
  max-width: 780px;
  margin: 0 auto;
}
.article-header {
  text-align: center;
  margin-bottom: 36px;
}
.article-header .article-tag {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  padding: 4px 12px;
  border-radius: 20px;
  background: var(--color-primary-glow);
  color: var(--color-primary);
  margin-bottom: 14px;
}
.article-header h1 {
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.25;
  margin-bottom: 12px;
}
.article-header .article-meta {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-weight: 500;
}
.article-header .article-meta span { margin: 0 6px; }
.article-body {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border-light);
  line-height: 1.85;
  font-size: 1.02rem;
  color: var(--color-text);
}
.article-body h2 {
  font-size: 1.4rem;
  font-weight: 800;
  margin-top: 36px;
  margin-bottom: 14px;
  letter-spacing: -0.02em;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-border-light);
}
.article-body h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-top: 28px;
  margin-bottom: 10px;
}
.article-body p {
  margin-bottom: 18px;
  color: #334155;
}
.article-body ul, .article-body ol {
  margin-bottom: 18px;
  padding-left: 24px;
  color: #334155;
}
.article-body li { margin-bottom: 8px; }
.article-body blockquote {
  border-left: 4px solid var(--color-primary);
  background: var(--color-primary-glow);
  margin: 24px 0;
  padding: 16px 22px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}
.article-body .key-takeaway {
  background: linear-gradient(135deg, #eff6ff, #f0f9ff);
  border: 1px solid rgba(37,99,235,0.15);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 28px 0;
}
.article-body .key-takeaway h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--color-primary);
  margin-bottom: 8px;
  font-weight: 700;
}
.article-body .key-takeaway p, .article-body .key-takeaway ul { margin-bottom: 0; color: var(--color-text); }

/* Related Articles */
.related-articles {
  margin-top: 44px;
}
.related-articles h3 {
  font-size: 1.2rem;
  font-weight: 800;
  margin-bottom: 18px;
  letter-spacing: -0.02em;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}
.related-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: box-shadow var(--transition);
  display: block;
  text-decoration: none;
  color: inherit;
}
.related-card:hover { box-shadow: var(--shadow-md); }
.related-card h4 { font-size: 0.9rem; font-weight: 700; margin-bottom: 6px; color: var(--color-text); }
.related-card p { font-size: 0.8rem; color: var(--color-text-secondary); line-height: 1.5; }

@media (max-width: 768px) {
  .article-body { padding: 24px; font-size: 0.95rem; }
  .article-header h1 { font-size: 1.5rem; }
  .blog-header h1 { font-size: 1.6rem; }
  .related-grid { grid-template-columns: 1fr; }
}

/* Print */
@media print {
  .site-header, .site-footer, .btn, .breadcrumb { display: none; }
  body { background: #fff; }
  .main-content { padding: 0; max-width: 100%; }
}

/* Animations */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in-up { animation: fadeInUp 0.35s ease-out; }
.results-panel.visible { animation: fadeInUp 0.4s ease-out; }
.dropdown-menu.show { animation: slideDown 0.2s ease-out; }