/* ==========================================================================
   EduCalcify - Clean, Human-Made Educational Style Sheet
   Designed for student utilities, readability, speed, and AdSense compliance
   ========================================================================== */

:root {
  --primary: #1E3A5F;
  --primary-hover: #162B46;
  --secondary: #2F855A;
  --secondary-hover: #276749;
  --accent: #F4A261;
  --accent-hover: #E76F51;
  --bg: #F8FAFC;
  --surface: #FFFFFF;
  --text: #1F2937;
  --text-muted: #64748B;
  --border: #E2E8F0;
  --border-light: #F1F5F9;
  --success-bg: #DEF7EC;
  --success-text: #03543F;
  --warning-bg: #FEF08A;
  --warning-text: #713F12;
  --danger-bg: #FDE8E8;
  --danger-text: #9B1C1C;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 12px 24px -4px rgba(15, 23, 42, 0.09), 0 4px 6px -2px rgba(15, 23, 42, 0.04);
  --max-w: 1220px;
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

/* Natural, Non-Futuristic Dark Mode */
[data-theme="dark"] {
  --primary: #38BDF8;
  --primary-hover: #7DD3FC;
  --secondary: #34D399;
  --secondary-hover: #10B981;
  --accent: #FBBF24;
  --accent-hover: #F59E0B;
  --bg: #0F172A;
  --surface: #1E293B;
  --text: #F1F5F9;
  --text-muted: #94A3B8;
  --border: #334155;
  --border-light: #243247;
  --success-bg: #064E3B;
  --success-text: #6EE7B7;
  --warning-bg: #78350F;
  --warning-text: #FDE68A;
  --danger-bg: #7F1D1D;
  --danger-text: #FCA5A5;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.45);
}

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

html {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--bg);
  color: var(--text);
}

img,
svg {
  max-width: 100%;
  height: auto;
  vertical-align: middle;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  text-decoration: underline;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* Header & Navigation */
.site-header {
  background-color: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.02);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none !important;
}

.brand-logo {
  height: 40px;
  width: auto;
}

.logo-dark {
  display: none !important;
}

.logo-light {
  display: block !important;
}

[data-theme="dark"] .logo-dark {
  display: block !important;
}

[data-theme="dark"] .logo-light {
  display: none !important;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-link {
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.5rem 0.25rem;
  border-bottom: 2px solid transparent;
  transition: all 0.15s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary);
  text-decoration: none;
  border-bottom-color: var(--primary);
}

/* Nav Dropdown (All Tools) */
.nav-dropdown {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.dropdown-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  cursor: pointer;
}

.dropdown-chevron {
  transition: transform 0.2s ease;
}

.nav-dropdown:hover .dropdown-chevron,
.nav-dropdown.is-open .dropdown-chevron {
  transform: rotate(180deg);
}

.dropdown-menu-pane {
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  width: 680px;
  max-width: 90vw;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: 0 16px 36px -8px rgba(15, 23, 42, 0.16), 0 4px 12px rgba(15, 23, 42, 0.05);
  padding: 1.25rem;
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.2s;
  z-index: 1000;
}

/* Invisible hover bridge */
.dropdown-menu-pane::before {
  content: '';
  position: absolute;
  top: -12px;
  left: 0;
  width: 100%;
  height: 12px;
}

.nav-dropdown:hover .dropdown-menu-pane,
.nav-dropdown:focus-within .dropdown-menu-pane,
.nav-dropdown.is-open .dropdown-menu-pane {
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.dropdown-mega-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.dropdown-category-col {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.dropdown-category-title {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding-bottom: 0.45rem;
  margin-bottom: 0.4rem;
  border-bottom: 1px solid var(--border-light);
}

.cat-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}

.dropdown-link-item {
  font-size: 0.86rem;
  color: var(--text);
  padding: 0.4rem 0.5rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.15s ease;
  display: block;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.dropdown-link-item:hover {
  background-color: var(--border-light);
  color: var(--primary);
  text-decoration: none;
  transform: translateX(2px);
}

.dropdown-bottom-bar {
  margin-top: 1rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--border-light);
  text-align: center;
}

.dropdown-view-all {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--primary);
  text-decoration: none;
  padding: 0.45rem 1rem;
  border-radius: var(--radius-sm);
  transition: background-color 0.15s ease;
}

.dropdown-view-all:hover {
  background-color: rgba(30, 58, 95, 0.08);
  text-decoration: none;
}

/* Explicit Dark Mode Overrides for Mega Menu Dropdown */
[data-theme="dark"] .dropdown-menu-pane {
  background-color: var(--surface) !important;
  border-color: var(--border) !important;
  box-shadow: 0 16px 36px -8px rgba(0, 0, 0, 0.6), 0 4px 12px rgba(0, 0, 0, 0.35) !important;
}

[data-theme="dark"] .dropdown-link-item {
  color: var(--text) !important;
}

[data-theme="dark"] .dropdown-link-item:hover {
  background-color: rgba(56, 189, 248, 0.14) !important;
  color: var(--primary) !important;
}

[data-theme="dark"] .dropdown-category-title {
  color: var(--text-muted) !important;
  border-bottom-color: var(--border) !important;
}

[data-theme="dark"] .dropdown-bottom-bar {
  border-top-color: var(--border) !important;
}

[data-theme="dark"] .dropdown-view-all {
  color: var(--primary) !important;
}

[data-theme="dark"] .dropdown-view-all:hover {
  background-color: rgba(56, 189, 248, 0.15) !important;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn-icon {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.5rem;
  color: var(--text);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.btn-icon:hover {
  background-color: var(--border-light);
  border-color: #CBD5E1;
}

.mobile-menu-btn {
  display: none;
}

/* Hero Section */
.hero-section {
  padding: 3.5rem 0 2.75rem;
  text-align: center;
  background: linear-gradient(180deg, var(--surface) 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--border);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background-color: var(--success-bg);
  color: var(--success-text);
  font-size: 0.825rem;
  font-weight: 600;
  padding: 0.3rem 0.85rem;
  border-radius: 9999px;
  border: 1px solid rgba(47, 133, 90, 0.2);
  margin-bottom: 1rem;
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1.2;
  margin-bottom: 0.85rem;
  letter-spacing: -0.025em;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 720px;
  margin: 0 auto 2.25rem;
  line-height: 1.55;
}

/* Tool Search Box */
.search-wrapper {
  max-width: 620px;
  margin: 0 auto;
  position: relative;
}

.search-input {
  width: 100%;
  padding: 0.95rem 1.25rem 0.95rem 3.1rem;
  font-size: 1.025rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  background-color: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
}

.search-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.12), var(--shadow-md);
}

.search-icon-svg {
  position: absolute;
  left: 1.1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

/* Category Filter Pills */
.category-filter-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 2rem 0 1.25rem;
}

.filter-btn {
  padding: 0.45rem 1.15rem;
  font-size: 0.875rem;
  font-weight: 600;
  border: 1px solid var(--border);
  border-radius: 9999px;
  background-color: var(--surface);
  color: var(--text);
  cursor: pointer;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
  transition: all 0.15s ease;
}

.filter-btn:hover {
  background-color: var(--border-light);
  border-color: #CBD5E1;
}

.filter-btn.active {
  background-color: var(--primary);
  color: #FFFFFF;
  border-color: var(--primary);
  box-shadow: 0 2px 4px rgba(30, 58, 95, 0.2);
}

/* Section Header */
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 1.75rem;
}

.section-title {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.015em;
}

.section-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* Tool Cards Grid */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(285px, 1fr));
  gap: 1.35rem;
  margin-bottom: 3.5rem;
}

.tool-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.45rem;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.tool-card:hover {
  transform: translateY(-3px);
  border-color: #CBD5E1;
  box-shadow: var(--shadow-lg);
  text-decoration: none !important;
}

.tool-card-category {
  font-size: 0.725rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  display: inline-block;
  align-self: flex-start;
  margin-bottom: 0.65rem;
}

/* Distinct category badges */
.tool-card[data-category="grades-gpa"] .tool-card-category {
  background-color: #EEF2FF;
  color: #4338CA;
}

.tool-card[data-category="marks-exams"] .tool-card-category {
  background-color: #E0F2FE;
  color: #0369A1;
}

.tool-card[data-category="attendance-deadlines"] .tool-card-category {
  background-color: #FEF3C7;
  color: #92400E;
}

.tool-card[data-category="study-planning"] .tool-card-category {
  background-color: #DCFCE7;
  color: #166534;
}

[data-theme="dark"] .tool-card[data-category="grades-gpa"] .tool-card-category {
  background-color: rgba(99, 102, 241, 0.2);
  color: #A5B4FC;
}

[data-theme="dark"] .tool-card[data-category="marks-exams"] .tool-card-category {
  background-color: rgba(14, 165, 233, 0.2);
  color: #7DD3FC;
}

[data-theme="dark"] .tool-card[data-category="attendance-deadlines"] .tool-card-category {
  background-color: rgba(245, 158, 11, 0.2);
  color: #FDE68A;
}

[data-theme="dark"] .tool-card[data-category="study-planning"] .tool-card-category {
  background-color: rgba(34, 197, 94, 0.2);
  color: #86EFAC;
}

.tool-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.5rem;
  line-height: 1.35;
}

.tool-card:hover .tool-card-title {
  color: var(--primary);
}

.tool-card-desc {
  font-size: 0.885rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin-bottom: 1.35rem;
  flex-grow: 1;
}

.tool-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary);
  padding-top: 0.85rem;
  border-top: 1px solid var(--border-light);
}

.tool-card-footer svg {
  transition: transform 0.2s ease;
}

.tool-card:hover .tool-card-footer svg {
  transform: translateX(4px);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease;
  text-decoration: none !important;
}

.btn-primary {
  background-color: var(--primary);
  color: #FFFFFF;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
}

.btn-secondary {
  background-color: var(--secondary);
  color: #FFFFFF;
}

.btn-secondary:hover {
  background-color: var(--secondary-hover);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--border);
  color: var(--text);
}

.btn-outline:hover {
  background-color: var(--border-light);
}

.btn-sm {
  font-size: 0.85rem;
  padding: 0.4rem 0.85rem;
}

/* Breadcrumbs */
.breadcrumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 1.25rem 0;
}

.breadcrumbs a {
  color: var(--text-muted);
}

.breadcrumbs a:hover {
  color: var(--primary);
}

.breadcrumbs span.current {
  color: var(--text);
  font-weight: 600;
}

/* Tool Detail Page Layout */
.tool-header-block {
  margin-bottom: 2rem;
}

.tool-page-title {
  font-size: 2.15rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1.25;
  margin-bottom: 0.65rem;
}

.tool-page-intro {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 800px;
}

.calculator-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 3rem;
  box-shadow: var(--shadow-sm);
}

@media (max-width: 900px) {
  .calculator-container {
    grid-template-columns: 1fr;
    padding: 1.5rem;
    gap: 1.5rem;
  }
}

.calc-form-side h2,
.calc-result-side h2 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  color: var(--text);
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.4rem;
}

.form-label small {
  font-weight: normal;
  color: var(--text-muted);
}

.form-control {
  width: 100%;
  padding: 0.65rem 0.9rem;
  font-size: 0.95rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background-color: var(--surface);
  color: var(--text);
  transition: border-color 0.15s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.12);
}

.form-row {
  display: flex;
  gap: 1rem;
}

.form-row>* {
  flex: 1;
}

.calc-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

/* Result Card */
.calc-result-side {
  background-color: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
}

.result-main-box {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  text-align: center;
  margin-bottom: 1.25rem;
}

.result-label {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.result-value {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}

.result-badge {
  display: inline-block;
  margin-top: 0.5rem;
  padding: 0.25rem 0.75rem;
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
}

.badge-success {
  background: var(--success-bg);
  color: var(--success-text);
}

.badge-warning {
  background: var(--warning-bg);
  color: var(--warning-text);
}

.badge-danger {
  background: var(--danger-bg);
  color: var(--danger-text);
}

.result-details-list {
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.result-detail-item {
  display: flex;
  justify-content: space-between;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
}

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

.result-actions {
  display: flex;
  gap: 0.75rem;
}

/* Tool Content Sections (AdSense & SEO Rich) */
.tool-content-block {
  max-width: 900px;
  margin: 0 auto 3.5rem;
}

.card-box {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  margin-bottom: 2rem;
  color: var(--text);
}

.card-box h1,
.card-box h2,
.card-box h3,
.card-box h4,
.card-box h5,
.card-box h6 {
  color: var(--text);
  margin-bottom: 1rem;
}

.card-box p {
  color: var(--text);
  margin-bottom: 1rem;
  line-height: 1.7;
}

.card-box ul,
.card-box ol {
  color: var(--text);
  padding-left: 1.5rem;
  margin-bottom: 1.25rem;
}

.card-box li {
  color: var(--text);
  margin-bottom: 0.5rem;
  line-height: 1.7;
}

.card-box blockquote {
  background-color: var(--bg);
  border-left: 4px solid var(--secondary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 1rem 1.25rem;
  margin: 1.25rem 0;
  color: var(--text);
}

.card-box blockquote p,
.card-box blockquote strong,
.card-box blockquote em,
.card-box blockquote small {
  color: var(--text);
}

.card-box strong,
.card-box b {
  color: var(--text);
  font-weight: 700;
}

.card-box em,
.card-box i {
  color: var(--text);
}

.card-box small {
  color: var(--text-muted);
}

.card-box a {
  color: var(--primary);
  font-weight: 600;
}

.card-box a:hover {
  text-decoration: underline;
}

.formula-box {
  background-color: var(--bg);
  border-left: 4px solid var(--secondary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 1rem 1.25rem;
  margin: 1.25rem 0;
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--text);
  font-weight: 600;
}

.example-box {
  background-color: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  margin: 1.25rem 0;
}

.steps-list {
  padding-left: 1.5rem;
  margin: 1rem 0;
}

.steps-list li {
  margin-bottom: 0.65rem;
  line-height: 1.6;
}

/* Accordion FAQs */
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 0.75rem;
  background-color: var(--surface);
  overflow: hidden;
}

.faq-header {
  padding: 1rem 1.25rem;
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  gap: 1rem;
}

.faq-header svg {
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.faq-header[aria-expanded="true"] svg {
  transform: rotate(180deg);
}

.faq-body {
  padding: 0 1.25rem 1rem;
  color: var(--text-muted);
  line-height: 1.6;
  display: none;
}

.faq-body.show {
  display: block;
}

/* Dynamic Rows in Grade/Subject Calculators */
.calc-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

.calc-table th {
  text-align: left;
  padding: 0.5rem 0.6rem;
  background-color: var(--bg);
  border-bottom: 1px solid var(--border);
  font-weight: 600;
}

.calc-table td {
  padding: 0.4rem 0.4rem;
}

.btn-remove-row {
  background: none;
  border: none;
  color: var(--danger-text);
  cursor: pointer;
  padding: 0.25rem;
}

/* AdSense Notice / Placeholders (clean & non-intrusive) */
.ad-slot-wrapper {
  margin: 1.75rem auto;
  text-align: center;
}

.ad-slot-label {
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 0.25rem;
}

/* Blog & Articles */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.75rem;
  margin-bottom: 3rem;
}

.blog-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.blog-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  text-decoration: none !important;
}

.blog-thumb {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background-color: var(--border-light);
}

.blog-card-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.blog-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.blog-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.35;
  margin-bottom: 0.65rem;
}

.blog-summary {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

/* Author Box */
.author-box {
  display: flex;
  gap: 1.25rem;
  align-items: center;
  background-color: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin: 2.5rem 0;
}

.author-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  object-fit: cover;
}

.author-info h4 {
  font-size: 1.05rem;
  color: var(--text);
  margin-bottom: 0.25rem;
}

.author-info p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 0.5rem;
}

/* Footer */
.site-footer {
  background-color: var(--surface);
  border-top: 1px solid var(--border);
  padding: 3.5rem 0 2rem;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

@media (max-width: 850px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 500px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.885rem;
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Cookie Banner */
.cookie-banner {
  position: fixed;
  bottom: 1rem;
  left: 1rem;
  right: 1rem;
  max-width: 500px;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.cookie-banner.hidden {
  display: none !important;
}

/* Responsive Navigation */
@media (max-width: 768px) {
  .main-nav {
    display: none;
    position: fixed !important;
    top: 68px !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    width: 100% !important;
    height: calc(100vh - 68px) !important;
    height: calc(100dvh - 68px) !important;
    z-index: 9999 !important;
    overflow-y: auto !important;
    overscroll-behavior-y: contain !important;
    touch-action: pan-y !important;
    -webkit-overflow-scrolling: touch !important;
    background-color: var(--surface);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 1.25rem 1.5rem 5rem 1.5rem;
    gap: 0.75rem;
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.25);
  }

  .main-nav.open {
    display: flex !important;
  }

  .main-nav .nav-link {
    width: 100%;
    padding: 0.65rem 0.85rem;
    font-size: 1.05rem;
    border-radius: var(--radius-sm);
  }

  .main-nav .nav-link:hover,
  .main-nav .nav-link.active {
    background-color: var(--border-light);
  }

  [data-theme="dark"] .main-nav .nav-link:hover,
  [data-theme="dark"] .main-nav .nav-link.active {
    background-color: rgba(56, 189, 248, 0.12);
  }

  .nav-dropdown {
    width: 100%;
    display: block;
    position: relative;
  }

  .nav-dropdown .dropdown-toggle {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .dropdown-menu-pane,
  .nav-dropdown.is-open .dropdown-menu-pane,
  .nav-dropdown:hover .dropdown-menu-pane,
  .nav-dropdown:focus-within .dropdown-menu-pane {
    position: static !important;
    left: auto !important;
    top: auto !important;
    transform: none !important;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    box-shadow: none !important;
    border: 1px solid var(--border);
    margin-top: 0.5rem !important;
    display: none;
    visibility: visible !important;
    opacity: 1 !important;
    pointer-events: auto !important;
    padding: 0.85rem !important;
  }

  .nav-dropdown.is-open .dropdown-menu-pane {
    display: block !important;
  }

  .dropdown-mega-grid {
    grid-template-columns: 1fr;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: 100%;
  }

  .dropdown-category-col {
    width: 100%;
  }

  .dropdown-link-item {
    white-space: normal;
    word-break: break-word;
    padding: 0.55rem 0.65rem;
    font-size: 0.95rem;
    width: 100%;
    display: block;
  }

  .mobile-menu-btn {
    display: inline-flex !important;
  }

  .hero-title {
    font-size: 1.75rem;
  }
}