/* ============================================================
   NEEDFUL CALCULATOR — Reusable Components
   components.css
   ============================================================ */

/* ═══════════════════════════════════════════════
   1. HEADER
═══════════════════════════════════════════════ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: inherit;
  height: var(--header-height);
  border-bottom: 1px solid rgba(229, 231, 235, 0.6);
  box-shadow: var(--shadow-sm);
  transition: background var(--transition-base), box-shadow var(--transition-base);
  width: 100%;
  max-width: 100%;
}

body.mobile-nav-open .site-header {
  position: fixed !important;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  z-index: 1000;
  background: var(--bg-surface) !important;
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: var(--space-6);
  min-width: 0;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
  text-decoration: none;
}

.logo img {
  height: 36px;
  width: auto;
}

.logo-text {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 800;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}

/* Header Search */
.header-search {
  flex: 1;
  max-width: 480px;
  position: relative;
}

.header-search input {
  width: 100%;
  height: 42px;
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-full);
  padding: 0 var(--space-5) 0 var(--space-10);
  font-size: var(--text-sm);
  background: var(--bg-surface);
  color: var(--txt-primary);
  transition: all var(--transition-fast);
  outline: none;
}

.header-search input:focus {
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.header-search input::placeholder { color: var(--txt-light); }

.header-search-icon {
  position: absolute;
  left: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  color: var(--txt-muted);
  pointer-events: none;
  width: 18px;
  height: 18px;
}

/* Header Nav */
.header-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--txt-secondary);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--clr-primary);
  background: var(--clr-primary-light);
}

.nav-link.active {
  color: var(--clr-primary);
  background: var(--clr-primary-light);
}

/* Dropdown */
.nav-item { position: relative; }

.nav-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  min-width: 220px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2);
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(-8px);
  transition: all var(--transition-base);
  z-index: 100;
}

.nav-item:hover .nav-dropdown,
.nav-item:focus-within .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown a {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--txt-secondary);
  transition: all var(--transition-fast);
}

.nav-dropdown a:hover {
  color: var(--clr-primary);
  background: var(--bg-muted);
}

/* Dark mode toggle */
.theme-toggle {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--border-color);
  background: var(--bg-surface);
  color: var(--txt-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.theme-toggle:hover {
  border-color: var(--clr-primary);
  color: var(--clr-primary);
  background: var(--clr-primary-light);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  border: 1.5px solid var(--border-color);
  background: var(--bg-surface);
  transition: all var(--transition-fast);
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--txt-secondary);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile Nav */
.mobile-nav {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-surface);
  z-index: 999;
  padding: var(--space-6);
  overflow-y: auto;
  transform: translateX(-100%);
  transition: transform var(--transition-base);
}

.mobile-nav.open { transform: translateX(0); }

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.mobile-nav-links a {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--txt-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.mobile-nav-links a:hover {
  color: var(--clr-primary);
  background: var(--clr-primary-light);
}

/* ═══════════════════════════════════════════════
   2. BUTTONS
═══════════════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: 0.6875rem 1.5rem;
  border-radius: var(--radius-lg);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  letter-spacing: 0.01em;
  text-decoration: none;
  line-height: 1;
}

.btn:focus-visible {
  outline: 2px solid var(--clr-primary);
  outline-offset: 3px;
}

.btn-primary {
  background: var(--gradient-brand);
  color: white;
  box-shadow: var(--shadow-brand);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 36px rgba(37, 99, 235, 0.35);
  color: white;
}

.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  background: var(--bg-surface);
  color: var(--clr-primary);
  border-color: var(--clr-primary);
}

.btn-secondary:hover {
  background: var(--clr-primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-ghost {
  background: transparent;
  color: var(--txt-secondary);
  border-color: var(--border-color);
}

.btn-ghost:hover {
  background: var(--bg-muted);
  border-color: var(--txt-secondary);
  color: var(--txt-primary);
}

.btn-sm {
  font-size: var(--text-xs);
  padding: 0.45rem 1rem;
  border-radius: var(--radius-md);
}

.btn-lg {
  font-size: var(--text-base);
  padding: 1rem 2rem;
  border-radius: var(--radius-xl);
}

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-md);
}

/* ═══════════════════════════════════════════════
   3. CALCULATOR CARDS
═══════════════════════════════════════════════ */
.tool-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: all var(--transition-base);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.tool-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-brand);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: 0;
}

.tool-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}

.tool-card:hover::before { opacity: 0.04; }

.tool-card * { position: relative; z-index: 1; }

.tool-card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-lg);
  background: var(--gradient-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.25);
}

.tool-card-name {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--txt-primary);
  transition: color var(--transition-fast);
}

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

.tool-card-desc {
  font-size: var(--text-sm);
  color: var(--txt-muted);
  line-height: 1.5;
  flex: 1;
}

.tool-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--space-2);
}

.tool-card-open {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--clr-primary);
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: gap var(--transition-fast);
}

.tool-card:hover .tool-card-open { gap: 10px; }

.tool-card-arrow {
  display: inline-block;
  transition: transform var(--transition-fast);
}

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

/* ═══════════════════════════════════════════════
   4. CATEGORY CARDS
═══════════════════════════════════════════════ */
.category-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-3);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.category-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-brand);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(37, 99, 235, 0.2);
}

.category-card:hover::after { transform: scaleX(1); }

.category-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  transition: transform var(--transition-base);
}

.category-card:hover .category-icon { transform: scale(1.1) rotate(-5deg); }

.category-name {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--txt-primary);
}

.category-count {
  font-size: var(--text-xs);
  color: var(--txt-muted);
  font-weight: 500;
}

/* Category color variants */
.cat-finance { background: linear-gradient(135deg, #EFF6FF, #DBEAFE); }
.cat-health   { background: linear-gradient(135deg, #F0FDF4, #DCFCE7); }
.cat-education { background: linear-gradient(135deg, #FAF5FF, #EDE9FE); }
.cat-unit     { background: linear-gradient(135deg, #FFFBEB, #FEF3C7); }
.cat-date     { background: linear-gradient(135deg, #FFF1F2, #FFE4E6); }
.cat-pdf      { background: linear-gradient(135deg, #F0FDFA, #CCFBF1); }

/* ═══════════════════════════════════════════════
   5. BLOG CARDS
═══════════════════════════════════════════════ */
.blog-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

.blog-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(37, 99, 235, 0.15);
}

.blog-card-image {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.blog-card:hover .blog-card-image { transform: scale(1.04); }

.blog-card-img-wrap {
  overflow: hidden;
  position: relative;
}

.blog-card-body {
  padding: var(--space-5);
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xs);
  color: var(--txt-muted);
  font-weight: 500;
}

.blog-card-title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--txt-primary);
  line-height: 1.35;
  transition: color var(--transition-fast);
  flex: 1;
}

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

.blog-card-excerpt {
  font-size: var(--text-sm);
  color: var(--txt-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-3);
  border-top: 1px solid var(--border-color);
  margin-top: auto;
}

.read-more {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--clr-primary);
  transition: gap var(--transition-fast);
}

.blog-card:hover .read-more { gap: 8px; }

/* ═══════════════════════════════════════════════
   6. HERO
═══════════════════════════════════════════════ */
.hero {
  background: var(--gradient-hero);
  padding-block: var(--space-20) var(--space-16);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-6);
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(255,255,255,0.85);
  border: 1px solid rgba(37, 99, 235, 0.2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--clr-primary);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
}

.hero-title {
  font-size: clamp(var(--text-3xl), 6vw, var(--text-6xl));
  font-weight: 800;
  line-height: 1.1;
  background: linear-gradient(135deg, #111827 0%, #2563EB 50%, #7C3AED 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  max-width: 800px;
}

.hero-subtitle {
  font-size: clamp(var(--text-base), 2vw, var(--text-xl));
  color: var(--txt-muted);
  max-width: 560px;
  line-height: 1.6;
}

.hero-search {
  width: 100%;
  max-width: 640px;
  position: relative;
}

.hero-search input {
  width: 100%;
  height: 60px;
  border: 2px solid rgba(37, 99, 235, 0.2);
  border-radius: var(--radius-full);
  padding: 0 var(--space-6) 0 var(--space-14);
  font-size: var(--text-base);
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(10px);
  color: var(--txt-primary);
  box-shadow: var(--shadow-lg);
  outline: none;
  transition: all var(--transition-base);
}

.hero-search input:focus {
  border-color: var(--clr-primary);
  box-shadow: var(--shadow-brand);
  background: white;
}

.hero-search input::placeholder { color: #94A3B8; }

.hero-search-icon {
  position: absolute;
  left: var(--space-5);
  top: 50%;
  transform: translateY(-50%);
  color: var(--clr-primary);
  width: 22px;
  height: 22px;
  pointer-events: none;
}

.hero-search-btn {
  position: absolute;
  right: var(--space-2);
  top: 50%;
  transform: translateY(-50%);
  height: 44px;
  padding: 0 var(--space-5);
  background: var(--gradient-brand);
  color: white;
  border: none;
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
}

.hero-search-btn:hover { box-shadow: var(--shadow-brand); }

.hero-cta {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  justify-content: center;
}

.hero-stats {
  display: flex;
  gap: var(--space-8);
  flex-wrap: wrap;
  justify-content: center;
  margin-top: var(--space-4);
}

.hero-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
}

.hero-stat-num {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 800;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-stat-label {
  font-size: var(--text-xs);
  color: var(--txt-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ═══════════════════════════════════════════════
   7. SEARCH RESULTS DROPDOWN
═══════════════════════════════════════════════ */
.search-results {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  z-index: 9999;
  max-height: 280px;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  scroll-behavior: smooth;
  display: none;
}

.search-results::-webkit-scrollbar {
  width: 6px;
}
.search-results::-webkit-scrollbar-track {
  background: transparent;
}
.search-results::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: var(--radius-full);
}
.search-results::-webkit-scrollbar-thumb:hover {
  background: var(--txt-muted);
}

.search-results.show { display: block; }

.search-result-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  cursor: pointer;
  transition: background var(--transition-fast);
  text-decoration: none;
  color: var(--txt-primary);
}

.search-result-item:hover { background: var(--bg-muted); }

.search-result-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: var(--clr-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

.search-result-text { font-size: var(--text-sm); font-weight: 500; }
.search-result-cat { font-size: var(--text-xs); color: var(--txt-muted); }

/* ═══════════════════════════════════════════════
   8. FEATURES / WHY SECTION
═══════════════════════════════════════════════ */
.feature-card {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-5);
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
}

.feature-card:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(37, 99, 235, 0.2);
  transform: translateY(-3px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.375rem;
  flex-shrink: 0;
}

.feature-body { flex: 1; }

.feature-title {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--txt-primary);
  margin-bottom: var(--space-1);
}

.feature-text {
  font-size: var(--text-sm);
  color: var(--txt-muted);
  line-height: 1.6;
}

/* ═══════════════════════════════════════════════
   9. FAQ ACCORDION
═══════════════════════════════════════════════ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.faq-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-fast);
}

.faq-item.open {
  border-color: rgba(37, 99, 235, 0.25);
  box-shadow: var(--shadow-md);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  gap: var(--space-4);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--txt-primary);
  font-family: var(--font-body);
  transition: color var(--transition-fast);
}

.faq-question:hover { color: var(--clr-primary); }

.faq-chevron {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--txt-muted);
  transition: transform var(--transition-base);
}

.faq-item.open .faq-chevron { transform: rotate(180deg); }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
}

.faq-item.open .faq-answer { max-height: 500px; }

.faq-answer-inner {
  padding: 0 var(--space-6) var(--space-5);
  font-size: var(--text-sm);
  color: var(--txt-muted);
  line-height: 1.75;
  border-top: 1px solid var(--border-color);
  padding-top: var(--space-4);
}

/* ═══════════════════════════════════════════════
   10. NEWSLETTER
═══════════════════════════════════════════════ */
.newsletter-section {
  background: var(--gradient-brand);
  border-radius: var(--radius-2xl);
  padding: var(--space-12) var(--space-8);
  margin-inline: var(--space-4);
  position: relative;
  overflow: hidden;
}

.newsletter-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
  pointer-events: none;
}

.newsletter-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

.newsletter-copy h2 {
  color: white;
  font-size: var(--text-2xl);
  margin-bottom: var(--space-2);
}

.newsletter-copy p {
  color: rgba(255,255,255,0.8);
  font-size: var(--text-base);
}

.newsletter-form {
  display: flex;
  gap: var(--space-3);
  flex: 1;
  min-width: 280px;
  max-width: 480px;
}

.newsletter-form input {
  flex: 1;
  height: 50px;
  border: none;
  border-radius: var(--radius-lg);
  padding: 0 var(--space-5);
  font-size: var(--text-sm);
  background: rgba(255,255,255,0.95);
  color: var(--txt-primary);
  outline: none;
}

.newsletter-form input::placeholder { color: var(--txt-muted); }

.newsletter-form button {
  height: 50px;
  padding: 0 var(--space-6);
  background: white;
  color: var(--clr-primary);
  border: none;
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-base);
}

.newsletter-form button:hover {
  background: var(--clr-primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ═══════════════════════════════════════════════
   11. FOOTER
═══════════════════════════════════════════════ */
.site-footer {
  background: #0F172A;
  color: rgba(255,255,255,0.7);
  padding-block: var(--space-16) var(--space-8);
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-10);
  margin-bottom: var(--space-12);
}

.footer-brand .logo-text { -webkit-text-fill-color: white; }

.footer-desc {
  font-size: var(--text-sm);
  line-height: 1.75;
  margin-top: var(--space-4);
  margin-bottom: var(--space-6);
  color: rgba(255,255,255,0.5);
}

.footer-social {
  display: flex;
  gap: var(--space-3);
}

.social-btn {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.7);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}

.social-btn:hover {
  background: var(--clr-primary);
  border-color: var(--clr-primary);
  color: white;
  transform: translateY(-3px);
}

.footer-col h4 {
  color: white;
  font-size: var(--text-sm);
  font-weight: 700;
  margin-bottom: var(--space-4);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-family: var(--font-heading);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-links a {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.55);
  transition: color var(--transition-fast);
}

.footer-links a:hover { color: white; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-bottom p {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.4);
}

.footer-legal {
  display: flex;
  gap: var(--space-5);
}

.footer-legal a {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.4);
  transition: color var(--transition-fast);
}

.footer-legal a:hover { color: rgba(255,255,255,0.8); }

/* ═══════════════════════════════════════════════
   12. SIDEBAR
═══════════════════════════════════════════════ */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.sidebar-widget {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  overflow: visible;
}

.sidebar-widget-header {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--border-color);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--txt-primary);
  background: var(--bg-muted);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.sidebar-widget-body { padding: var(--space-4) var(--space-5); }

.sidebar-search {
  position: relative;
}

.sidebar-search input {
  width: 100%;
  height: 42px;
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 0 var(--space-4) 0 var(--space-10);
  font-size: var(--text-sm);
  background: var(--bg-muted);
  color: var(--txt-primary);
  outline: none;
  transition: all var(--transition-fast);
}

.sidebar-search input:focus {
  border-color: var(--clr-primary);
  background: var(--bg-surface);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.sidebar-search-icon {
  position: absolute;
  left: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  color: var(--txt-muted);
  width: 16px;
  height: 16px;
  pointer-events: none;
}

.sidebar-category-list { display: flex; flex-direction: column; gap: var(--space-1); }

.sidebar-cat-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--txt-secondary);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.sidebar-cat-item:hover {
  background: var(--bg-muted);
  color: var(--clr-primary);
}

.sidebar-cat-count {
  background: var(--bg-muted);
  color: var(--txt-muted);
  font-size: var(--text-xs);
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.sidebar-tool-list { display: flex; flex-direction: column; }

.sidebar-tool-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--border-color);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.sidebar-tool-item:last-child { border-bottom: none; }
.sidebar-tool-item:hover .sidebar-tool-name { color: var(--clr-primary); }

.sidebar-tool-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: var(--clr-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

.sidebar-tool-name {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--txt-primary);
  transition: color var(--transition-fast);
}

.sidebar-tool-meta {
  font-size: var(--text-xs);
  color: var(--txt-muted);
}

/* ═══════════════════════════════════════════════
   13. CALCULATOR WIDGET
═══════════════════════════════════════════════ */
.calc-widget {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.calc-header {
  background: var(--gradient-brand);
  padding: var(--space-6);
  color: white;
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.calc-header-icon {
  width: 52px;
  height: 52px;
  background: rgba(255,255,255,0.2);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.calc-header h1 {
  font-size: var(--text-xl);
  font-weight: 700;
  color: white;
}

.calc-header p {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.8);
  margin-top: 2px;
}

.calc-body { padding: var(--space-6); }

.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--txt-primary);
  margin-bottom: var(--space-2);
}

.form-value {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--clr-primary);
  font-size: var(--text-base);
}

.form-input {
  width: 100%;
  height: 46px;
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 0 var(--space-4);
  font-size: var(--text-base);
  color: var(--txt-primary);
  background: var(--bg-muted);
  outline: none;
  transition: all var(--transition-fast);
  -moz-appearance: textfield;
}

.form-input::-webkit-outer-spin-button,
.form-input::-webkit-inner-spin-button { -webkit-appearance: none; }

.form-input:focus {
  border-color: var(--clr-primary);
  background: var(--bg-surface);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Range Slider */
.range-slider {
  width: 100%;
  height: 6px;
  -webkit-appearance: none;
  background: var(--border-color);
  border-radius: 3px;
  outline: none;
  margin-top: var(--space-2);
  cursor: pointer;
}

.range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--gradient-brand);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.4);
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.range-slider::-webkit-slider-thumb:hover { transform: scale(1.2); }

/* Calculator Results */
.calc-results {
  background: var(--gradient-hero);
  border: 1px solid rgba(37, 99, 235, 0.1);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  margin-top: var(--space-6);
}

.calc-result-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--border-color);
}

.calc-result-row:last-child { border-bottom: none; }

.calc-result-label {
  font-size: var(--text-sm);
  color: var(--txt-muted);
  font-weight: 500;
}

.calc-result-value {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--txt-primary);
}

.calc-result-value.highlight {
  color: var(--clr-primary);
  font-size: var(--text-xl);
}

.chart-wrap {
  width: 100%;
  max-width: 220px;
  aspect-ratio: 1 / 1;
  margin: var(--space-6) auto;
  overflow: hidden;
}

.chart-wrap canvas {
  max-width: 100%;
  height: auto !important;
}

/* ═══════════════════════════════════════════════
   14. TRENDING SECTION
═══════════════════════════════════════════════ */
.trending-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.trending-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-4) var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  transition: all var(--transition-base);
  text-decoration: none;
}

.trending-card:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(37, 99, 235, 0.2);
}

.trending-rank {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--border-color);
  min-width: 36px;
  line-height: 1;
}

.trending-card:hover .trending-rank { color: var(--clr-primary-light); }

.trending-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--gradient-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.trending-name {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--txt-primary);
  transition: color var(--transition-fast);
}

.trending-card:hover .trending-name { color: var(--clr-primary); }

.trending-meta {
  font-size: var(--text-xs);
  color: var(--txt-muted);
}

/* ═══════════════════════════════════════════════
   15. SCROLL ANIMATIONS
═══════════════════════════════════════════════ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ═══════════════════════════════════════════════
   16. TAGS / PILLS
═══════════════════════════════════════════════ */
.tag {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  background: var(--bg-muted);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--txt-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.tag:hover, .tag.active {
  background: var(--clr-primary);
  border-color: var(--clr-primary);
  color: white;
}

/* ═══════════════════════════════════════════════
   17. RESPONSIVE ADJUSTMENTS
═══════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .footer-top { grid-template-columns: 1fr 1fr; }
  .trending-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .header-search { display: none; }
  .header-nav { display: none; }
  .hamburger { display: flex; }

  .hero { padding-block: var(--space-12) var(--space-10); }

  .newsletter-inner { flex-direction: column; text-align: center; }
  .newsletter-form { max-width: 100%; }

  .footer-top { grid-template-columns: 1fr; gap: var(--space-8); }
  .trending-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .hero-cta { flex-direction: column; align-items: center; }
  .hero-stats { gap: var(--space-5); }
  .newsletter-form { flex-direction: column; }
  .newsletter-form input, .newsletter-form button { width: 100%; }
}