/* =========================================
   ExamFriend Tools — style.css
   Premium Modern UI | Dark Mode | Responsive
   ========================================= */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ---------- CSS Custom Properties ---------- */
:root {
  --primary:        #2563EB;
  --primary-dark:   #1E40AF;
  --accent:         #0EA5E9;
  --success:        #22C55E;
  --warning:        #F59E0B;
  --danger:         #EF4444;
  --bg:             #FFFFFF;
  --bg-secondary:   #F8FAFC;
  --bg-card:        #FFFFFF;
  --bg-dark:        #0F172A;
  --text:           #111827;
  --text-muted:     #6B7280;
  --text-light:     #9CA3AF;
  --border:         #E5E7EB;
  --border-light:   #F3F4F6;
  --shadow-sm:      0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow:         0 4px 6px -1px rgba(0,0,0,.1), 0 2px 4px -1px rgba(0,0,0,.06);
  --shadow-md:      0 10px 15px -3px rgba(0,0,0,.1), 0 4px 6px -2px rgba(0,0,0,.05);
  --shadow-lg:      0 20px 25px -5px rgba(0,0,0,.1), 0 10px 10px -5px rgba(0,0,0,.04);
  --shadow-xl:      0 25px 50px -12px rgba(0,0,0,.15);
  --radius-sm:      8px;
  --radius:         12px;
  --radius-lg:      16px;
  --radius-xl:      24px;
  --radius-full:    9999px;
  --transition:     all .25s cubic-bezier(.4,0,.2,1);
  --font:           'Inter', system-ui, -apple-system, sans-serif;
  --header-h:       70px;
  --max-w:          1280px;
}

[data-theme="dark"] {
  --bg:           #0F172A;
  --bg-secondary: #1E293B;
  --bg-card:      #1E293B;
  --text:         #F1F5F9;
  --text-muted:   #94A3B8;
  --text-light:   #64748B;
  --border:       #334155;
  --border-light: #1E293B;
  --shadow-sm:    0 1px 3px rgba(0,0,0,.3);
  --shadow:       0 4px 6px -1px rgba(0,0,0,.4);
  --shadow-md:    0 10px 15px -3px rgba(0,0,0,.4);
  --shadow-lg:    0 20px 25px -5px rgba(0,0,0,.5);
  --shadow-xl:    0 25px 50px -12px rgba(0,0,0,.6);
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  transition: background .3s ease, color .3s ease;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; margin: 0; padding: 0; }
button { cursor: pointer; font-family: var(--font); border: none; outline: none; }
input { font-family: var(--font); outline: none; border: none; }

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: var(--radius-full); }

/* ---------- Utility ---------- */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-sm { padding: 56px 0; }
.section-header { text-align: center; margin-bottom: 56px; }
.section-label {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: .78rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase;
  color: var(--primary); background: rgba(37,99,235,.1); padding: 4px 14px;
  border-radius: var(--radius-full); margin-bottom: 14px;
}
.section-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem); font-weight: 800;
  color: var(--text); line-height: 1.2; letter-spacing: -.025em;
}
.section-subtitle { color: var(--text-muted); font-size: 1.05rem; margin-top: 12px; max-width: 600px; margin-left: auto; margin-right: auto; }
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 4px 12px; border-radius: var(--radius-full);
  font-size: .75rem; font-weight: 600; line-height: 1;
}
.badge-new { background: linear-gradient(135deg,#22C55E,#16A34A); color: #fff; }
.badge-hot { background: linear-gradient(135deg,#F59E0B,#D97706); color: #fff; }
.badge-primary { background: rgba(37,99,235,.12); color: var(--primary); }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 26px; border-radius: var(--radius); font-weight: 600;
  font-size: .95rem; transition: var(--transition); cursor: pointer;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff; box-shadow: 0 4px 15px rgba(37,99,235,.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(37,99,235,.45); }
.btn-outline {
  background: transparent; color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
.btn-ghost {
  background: rgba(255,255,255,.15); color: #fff;
  backdrop-filter: blur(8px); border: 1px solid rgba(255,255,255,.25);
}
.btn-ghost:hover { background: rgba(255,255,255,.25); transform: translateY(-2px); }
.btn-sm { padding: 8px 16px; font-size: .85rem; }
.gradient-text {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

/* ---------- AD SLOTS ---------- */
.ad-slot {
  width: 100%; background: var(--bg-secondary); border: 2px dashed var(--border);
  border-radius: var(--radius); display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); font-size: .8rem; letter-spacing: .05em;
  text-transform: uppercase; font-weight: 500;
}
.ad-slot-header { height: 90px; max-width: 728px; margin: 8px auto; }
.ad-slot-banner { height: 90px; }
.ad-slot-rect { height: 280px; }
.ad-slot-footer { height: 90px; }

/* =========================================
   HEADER
   ========================================= */
#site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--header-h); background: rgba(255,255,255,.9);
  backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
[data-theme="dark"] #site-header {
  background: rgba(15,23,42,.92);
  border-bottom-color: var(--border);
}
#site-header.scrolled { box-shadow: var(--shadow-md); }
.header-inner {
  max-width: var(--max-w); margin: 0 auto; padding: 0 24px;
  height: 100%; display: flex; align-items: center; gap: 32px;
}
.site-logo {
  display: flex; align-items: center; gap: 10px;
  font-weight: 800; font-size: 1.2rem; white-space: nowrap; flex-shrink: 0;
}
.logo-icon {
  width: 36px; height: 36px; border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 1rem; box-shadow: 0 4px 12px rgba(37,99,235,.35);
}
.logo-text { color: var(--text); }
.logo-text span { color: var(--primary); }
.main-nav { flex: 1; display: flex; align-items: center; gap: 4px; overflow-x: auto; scrollbar-width: none; }
.main-nav::-webkit-scrollbar { display: none; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.main-nav a, .nav-link, .nav-links a {
  padding: 7px 12px; border-radius: var(--radius-sm); font-size: .88rem;
  font-weight: 500; color: var(--text-muted); transition: var(--transition);
  white-space: nowrap; display: inline-flex; align-items: center; gap: 4px;
}
.main-nav a:hover, .main-nav a.active, .nav-link:hover, .nav-link.active, .nav-links a:hover, .nav-links a.active {
  color: var(--primary); background: rgba(37,99,235,.12);
}
.header-actions { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.icon-btn {
  width: 38px; height: 38px; border-radius: var(--radius-sm);
  background: var(--bg-secondary); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); font-size: 1rem; transition: var(--transition);
}
.icon-btn:hover { color: var(--primary); border-color: var(--primary); background: rgba(37,99,235,.08); }
.btn-login {
  padding: 8px 18px; border-radius: var(--radius-sm); font-size: .87rem;
  font-weight: 600; background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff; box-shadow: 0 2px 10px rgba(37,99,235,.3); transition: var(--transition);
}
.btn-login:hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(37,99,235,.4); }
.hamburger { display: none; flex-direction: column; gap: 5px; padding: 6px; cursor: pointer; }
.hamburger span { display: block; width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: var(--transition); }
.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); }

/* Mobile Nav */
.mobile-nav {
  display: none; position: fixed; top: var(--header-h); left: 0; right: 0;
  background: var(--bg); border-bottom: 1px solid var(--border);
  padding: 16px 24px; z-index: 999; flex-direction: column; gap: 4px;
  box-shadow: var(--shadow-lg);
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  padding: 11px 14px; border-radius: var(--radius-sm); font-size: .95rem;
  font-weight: 500; color: var(--text); transition: var(--transition);
}
.mobile-nav a:hover { background: var(--bg-secondary); color: var(--primary); }

/* =========================================
   HERO SECTION
   ========================================= */
#hero {
  min-height: 100vh; display: flex; align-items: center;
  padding-top: var(--header-h);
  background: linear-gradient(135deg, #EFF6FF 0%, #DBEAFE 30%, #EDE9FE 60%, #F0FDF4 100%);
  position: relative; overflow: hidden;
}
[data-theme="dark"] #hero {
  background: linear-gradient(135deg, #0F172A 0%, #1E1B4B 40%, #0C1A3A 70%, #0F172A 100%);
}
.hero-bg-shapes { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.shape {
  position: absolute; border-radius: 50%; opacity: .15;
  animation: float-shape 8s ease-in-out infinite;
}
.shape-1 { width: 500px; height: 500px; background: radial-gradient(var(--primary), transparent); top: -150px; right: -100px; animation-delay: 0s; }
.shape-2 { width: 350px; height: 350px; background: radial-gradient(var(--accent), transparent); bottom: -100px; left: -80px; animation-delay: 2s; }
.shape-3 { width: 200px; height: 200px; background: radial-gradient(var(--success), transparent); top: 40%; right: 20%; animation-delay: 4s; }
@keyframes float-shape {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-30px) scale(1.05); }
}
.floating-icons { position: absolute; inset: 0; pointer-events: none; }
.fi {
  position: absolute; width: 50px; height: 50px; border-radius: var(--radius);
  background: rgba(255,255,255,.85); backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,.5); display: flex; align-items: center;
  justify-content: center; font-size: 1.4rem; box-shadow: var(--shadow-md);
  animation: float-icon 6s ease-in-out infinite;
}
[data-theme="dark"] .fi { background: rgba(30,41,59,.8); border-color: rgba(255,255,255,.1); }
.fi-1  { top: 18%; left: 8%;  color: #EF4444; animation-delay: 0s; }
.fi-2  { top: 28%; left: 16%; color: #3B82F6; animation-delay: .5s; }
.fi-3  { top: 55%; left: 6%;  color: #8B5CF6; animation-delay: 1s; }
.fi-4  { top: 70%; left: 18%; color: #22C55E; animation-delay: 1.5s; }
.fi-5  { top: 15%; right: 10%; color: #F59E0B; animation-delay: .8s; }
.fi-6  { top: 35%; right: 7%;  color: #EC4899; animation-delay: 1.3s; }
.fi-7  { top: 60%; right: 12%; color: #06B6D4; animation-delay: 2s; }
.fi-8  { top: 75%; right: 22%; color: #7C3AED; animation-delay: 2.5s; }
@keyframes float-icon {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  33%  { transform: translateY(-12px) rotate(3deg); }
  66%  { transform: translateY(6px) rotate(-3deg); }
}
.hero-content { position: relative; z-index: 2; max-width: 780px; margin: 0 auto; text-align: center; padding: 80px 24px; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(37,99,235,.1); border: 1px solid rgba(37,99,235,.2);
  color: var(--primary); padding: 6px 16px; border-radius: var(--radius-full);
  font-size: .82rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase;
  margin-bottom: 24px;
}
.hero-content h1 {
  font-size: clamp(2.2rem, 5.5vw, 4rem); font-weight: 900; line-height: 1.1;
  letter-spacing: -.04em; color: var(--text); margin-bottom: 20px;
}
.hero-badges {
  display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 10px;
  margin-bottom: 24px;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 14px; border-radius: var(--radius-full);
  font-size: .82rem; font-weight: 600;
  background: rgba(255,255,255,.7); border: 1px solid rgba(255,255,255,.6);
  backdrop-filter: blur(8px); color: var(--text);
  box-shadow: var(--shadow-sm);
}
[data-theme="dark"] .hero-badge { background: rgba(30,41,59,.6); border-color: var(--border); }
.hero-badge i { color: var(--success); font-size: .9rem; }
.hero-subtitle { font-size: 1.1rem; color: var(--text-muted); margin-bottom: 36px; max-width: 520px; margin-left: auto; margin-right: auto; }
.hero-cta { display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; margin-bottom: 60px; }
.hero-stats {
  display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 0;
  background: rgba(255,255,255,.7); backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,.5); border-radius: var(--radius-xl);
  padding: 20px 32px; box-shadow: var(--shadow-lg); max-width: 700px; margin: 0 auto;
}
[data-theme="dark"] .hero-stats { background: rgba(30,41,59,.7); border-color: var(--border); }
.stat-item { flex: 1; min-width: 120px; text-align: center; padding: 8px 16px; }
.stat-item:not(:last-child) { border-right: 1px solid var(--border); }
.stat-num { font-size: 1.8rem; font-weight: 900; color: var(--primary); line-height: 1; }
.stat-label { font-size: .78rem; color: var(--text-muted); font-weight: 500; margin-top: 4px; }

/* =========================================
   SEARCH BAR
   ========================================= */
#search-section { padding: 48px 0; background: var(--bg); }
.search-wrap { max-width: 720px; margin: 0 auto; text-align: center; }
.search-heading { font-size: 1.5rem; font-weight: 700; color: var(--text); margin-bottom: 20px; }
.search-box {
  position: relative; display: flex; align-items: center;
  background: var(--bg-card); border: 2px solid var(--border);
  border-radius: var(--radius-xl); box-shadow: var(--shadow-lg);
  transition: var(--transition); overflow: visible;
}
.search-box:focus-within { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(37,99,235,.12), var(--shadow-lg); }
.search-icon-wrap {
  padding: 0 18px; color: var(--text-muted); font-size: 1.2rem; flex-shrink: 0;
}
#search-input {
  flex: 1; padding: 18px 0; font-size: 1.05rem; background: transparent;
  color: var(--text); font-weight: 500;
}
#search-input::placeholder { color: var(--text-muted); }
.search-btn {
  margin: 6px; padding: 12px 24px; border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff; font-weight: 700; font-size: .95rem; flex-shrink: 0;
  transition: var(--transition); box-shadow: 0 2px 12px rgba(37,99,235,.3);
}
.search-btn:hover { transform: scale(1.03); box-shadow: 0 4px 20px rgba(37,99,235,.45); }
.search-dropdown {
  position: absolute; top: calc(100% + 8px); left: 0; right: 0;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); box-shadow: var(--shadow-xl);
  z-index: 200; display: none; overflow: hidden;
}
.search-dropdown.open { display: block; }
.sd-label { font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--text-muted); padding: 12px 16px 6px; }
.sd-item {
  display: flex; align-items: center; gap: 12px; padding: 11px 16px;
  font-size: .92rem; color: var(--text); cursor: pointer; transition: var(--transition);
}
.sd-item i { font-size: 1rem; color: var(--primary); width: 20px; text-align: center; }
.sd-item:hover { background: var(--bg-secondary); color: var(--primary); }
.popular-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; justify-content: center; }
.pop-tag {
  padding: 6px 14px; border-radius: var(--radius-full); font-size: .82rem; font-weight: 500;
  background: var(--bg-secondary); border: 1px solid var(--border); color: var(--text-muted);
  cursor: pointer; transition: var(--transition);
}
.pop-tag:hover { background: rgba(37,99,235,.1); border-color: var(--primary); color: var(--primary); }

/* =========================================
   TOOL CATEGORIES
   ========================================= */
#categories { background: var(--bg-secondary); }
.categories-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 20px; }
.cat-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 28px 20px; cursor: pointer; transition: var(--transition);
  position: relative; overflow: hidden; group: true;
}
.cat-card::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, transparent, transparent);
  transition: var(--transition); opacity: 0;
}
.cat-card:hover {
  transform: translateY(-6px); box-shadow: var(--shadow-xl);
  border-color: transparent;
}
.cat-card:hover::before { opacity: 1; }
.cat-icon-wrap {
  width: 56px; height: 56px; border-radius: var(--radius); margin-bottom: 16px;
  display: flex; align-items: center; justify-content: center; font-size: 1.5rem;
  transition: var(--transition);
}
.cat-card:hover .cat-icon-wrap { transform: scale(1.12) rotate(-5deg); }
.cat-name { font-size: 1rem; font-weight: 700; color: var(--text); margin-bottom: 6px; }
.cat-desc { font-size: .8rem; color: var(--text-muted); line-height: 1.5; margin-bottom: 12px; }
.cat-count {
  font-size: .78rem; font-weight: 600; color: var(--primary);
  background: rgba(37,99,235,.1); padding: 2px 10px; border-radius: var(--radius-full);
  display: inline-block;
}
/* Category colors */
.cat-pdf    .cat-icon-wrap { background: #FEE2E2; color: #EF4444; }
.cat-image  .cat-icon-wrap { background: #DBEAFE; color: #3B82F6; }
.cat-ai     .cat-icon-wrap { background: #EDE9FE; color: #8B5CF6; }
.cat-calc   .cat-icon-wrap { background: #D1FAE5; color: #22C55E; }
.cat-conv   .cat-icon-wrap { background: #FEF3C7; color: #F59E0B; }
.cat-dev    .cat-icon-wrap { background: #E0F2FE; color: #0EA5E9; }
.cat-seo    .cat-icon-wrap { background: #FCE7F3; color: #EC4899; }
.cat-text   .cat-icon-wrap { background: #F0FDF4; color: #16A34A; }
.cat-video  .cat-icon-wrap { background: #FFF7ED; color: #EA580C; }
.cat-audio  .cat-icon-wrap { background: #F3E8FF; color: #9333EA; }
.cat-color  .cat-icon-wrap { background: #FDF2F8; color: #DB2777; }
.cat-prod   .cat-icon-wrap { background: #ECFDF5; color: #059669; }
[data-theme="dark"] .cat-pdf    .cat-icon-wrap { background: rgba(239,68,68,.15); }
[data-theme="dark"] .cat-image  .cat-icon-wrap { background: rgba(59,130,246,.15); }
[data-theme="dark"] .cat-ai     .cat-icon-wrap { background: rgba(139,92,246,.15); }
[data-theme="dark"] .cat-calc   .cat-icon-wrap { background: rgba(34,197,94,.15); }
[data-theme="dark"] .cat-conv   .cat-icon-wrap { background: rgba(245,158,11,.15); }
[data-theme="dark"] .cat-dev    .cat-icon-wrap { background: rgba(14,165,233,.15); }
[data-theme="dark"] .cat-seo    .cat-icon-wrap { background: rgba(236,72,153,.15); }
[data-theme="dark"] .cat-text   .cat-icon-wrap { background: rgba(22,163,74,.15); }
[data-theme="dark"] .cat-video  .cat-icon-wrap { background: rgba(234,88,12,.15); }
[data-theme="dark"] .cat-audio  .cat-icon-wrap { background: rgba(147,51,234,.15); }
[data-theme="dark"] .cat-color  .cat-icon-wrap { background: rgba(219,39,119,.15); }
[data-theme="dark"] .cat-prod   .cat-icon-wrap { background: rgba(5,150,105,.15); }

/* =========================================
   FEATURED TOOLS
   ========================================= */
#featured-tools { background: var(--bg); }
.tools-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px; }
.tool-card {
  background: var(--bg-card); border: 1.5px solid var(--border); border-radius: var(--radius-lg);
  padding: 24px; transition: transform .35s cubic-bezier(.34,1.56,.64,1), box-shadow .35s cubic-bezier(.34,1.56,.64,1), border-color .3s ease, background .3s ease;
  position: relative; overflow: hidden; cursor: pointer; display: flex; flex-direction: column;
  text-decoration: none; color: inherit;
}
a.tool-card { text-decoration: none; color: inherit; }
.tool-card:hover {
  transform: translateY(-8px) scale(1.02);
  border-color: var(--primary);
  box-shadow: 0 16px 36px rgba(37, 99, 235, 0.25), 0 0 25px 3px rgba(37, 99, 235, 0.18);
  background: linear-gradient(180deg, var(--bg-card) 0%, rgba(37, 99, 235, 0.06) 100%);
}
.tool-card:active { transform: translateY(-2px) scale(0.99); }
[data-theme="dark"] .tool-card:hover {
  border-color: var(--accent);
  box-shadow: 0 16px 36px rgba(14, 165, 233, 0.35), 0 0 30px 4px rgba(14, 165, 233, 0.22);
  background: linear-gradient(180deg, var(--bg-card) 0%, rgba(14, 165, 233, 0.09) 100%);
}
.tool-card-badge { position: absolute; top: 16px; right: 16px; pointer-events: none; }
.tool-icon {
  width: 52px; height: 52px; border-radius: var(--radius); margin-bottom: 14px;
  display: flex; align-items: center; justify-content: center; font-size: 1.4rem;
  transition: transform .35s cubic-bezier(.34,1.56,.64,1), box-shadow .35s ease;
}
.tool-card:hover .tool-icon { transform: scale(1.18) rotate(-6deg); box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3); }
.tool-name { font-size: 1rem; font-weight: 700; color: var(--text); margin-bottom: 6px; }
.tool-desc { font-size: .83rem; color: var(--text-muted); line-height: 1.55; margin-bottom: 16px; flex: 1; }
.tool-footer { display: flex; align-items: center; justify-content: space-between; margin-top: auto; }
.tool-uses { font-size: .75rem; color: var(--text-muted); display: flex; align-items: center; gap: 4px; }
.open-tool {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px; border-radius: var(--radius-sm); font-size: .82rem; font-weight: 600;
  background: rgba(37,99,235,.1); color: var(--primary); transition: all .25s ease;
  border: none; cursor: pointer; text-decoration: none;
}
.tool-card:hover .open-tool, .open-tool:hover { background: var(--primary); color: #fff; gap: 10px; transform: translateX(3px); }
/* tool color combos */
.ti-red    { background: #FEE2E2; color: #EF4444; }
.ti-blue   { background: #DBEAFE; color: #3B82F6; }
.ti-purple { background: #EDE9FE; color: #8B5CF6; }
.ti-green  { background: #D1FAE5; color: #22C55E; }
.ti-amber  { background: #FEF3C7; color: #F59E0B; }
.ti-sky    { background: #E0F2FE; color: #0EA5E9; }
.ti-pink   { background: #FCE7F3; color: #EC4899; }
.ti-teal   { background: #CCFBF1; color: #0D9488; }
[data-theme="dark"] .ti-red    { background: rgba(239,68,68,.15); }
[data-theme="dark"] .ti-blue   { background: rgba(59,130,246,.15); }
[data-theme="dark"] .ti-purple { background: rgba(139,92,246,.15); }
[data-theme="dark"] .ti-green  { background: rgba(34,197,94,.15); }
[data-theme="dark"] .ti-amber  { background: rgba(245,158,11,.15); }
[data-theme="dark"] .ti-sky    { background: rgba(14,165,233,.15); }
[data-theme="dark"] .ti-pink   { background: rgba(236,72,153,.15); }
[data-theme="dark"] .ti-teal   { background: rgba(13,148,136,.15); }

/* =========================================
   MOST USED TOOLS
   ========================================= */
#most-used { background: var(--bg-secondary); }
.trending-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.trending-card {
  background: var(--bg-card); border: 1.5px solid var(--border); border-radius: var(--radius-lg);
  padding: 22px; display: flex; align-items: center; gap: 16px; transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
  cursor: pointer;
}
.trending-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: 0 10px 25px rgba(37,99,235,.18), 0 0 15px rgba(37,99,235,.12);
}
.trending-rank {
  width: 36px; height: 36px; border-radius: 50%; flex-shrink: 0;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff; font-weight: 800; font-size: .9rem;
  display: flex; align-items: center; justify-content: center;
}
.trending-info { flex: 1; min-width: 0; }
.trending-name { font-size: .95rem; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.trending-uses { font-size: .78rem; color: var(--text-muted); margin-bottom: 8px; }
.progress-bar { height: 4px; background: var(--border); border-radius: var(--radius-full); overflow: hidden; }
.progress-fill {
  height: 100%; border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--primary), var(--accent));
  width: 0%; transition: width 1.2s cubic-bezier(.4,0,.2,1);
}

/* =========================================
   RECENTLY ADDED
   ========================================= */
#recently-added { background: var(--bg); }
.recent-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px; }
.recent-card {
  background: var(--bg-card); border: 1.5px solid var(--border); border-radius: var(--radius-lg);
  overflow: hidden; transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease; cursor: pointer;
}
.recent-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary);
  box-shadow: 0 14px 28px rgba(37, 99, 235, 0.2), 0 0 20px rgba(37, 99, 235, 0.12);
}
.recent-card-header {
  padding: 24px 24px 16px; display: flex; align-items: flex-start;
  justify-content: space-between; gap: 12px;
}
.recent-card-body { padding: 0 24px 24px; }
.recent-date { font-size: .75rem; color: var(--text-muted); display: flex; align-items: center; gap: 4px; margin-bottom: 8px; }
.recent-name { font-size: 1rem; font-weight: 700; color: var(--text); margin-bottom: 6px; }
.recent-desc { font-size: .83rem; color: var(--text-muted); line-height: 1.5; margin-bottom: 16px; }
.view-tool {
  display: inline-flex; align-items: center; gap: 6px; font-size: .85rem; font-weight: 600;
  color: var(--primary); transition: var(--transition);
}
.view-tool:hover { gap: 10px; }

/* =========================================
   WHY CHOOSE US
   ========================================= */
#why-us {
  background: linear-gradient(135deg, #EFF6FF, #F0FDF4);
}
[data-theme="dark"] #why-us {
  background: linear-gradient(135deg, #0F172A, #0C1A3A);
}
.why-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 20px; }
.why-card {
  background: rgba(255,255,255,.7); backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,.6); border-radius: var(--radius-lg);
  padding: 28px 20px; text-align: center; transition: var(--transition);
}
[data-theme="dark"] .why-card { background: rgba(30,41,59,.6); border-color: var(--border); }
.why-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-xl); }
.why-icon {
  width: 56px; height: 56px; border-radius: var(--radius); margin: 0 auto 16px;
  display: flex; align-items: center; justify-content: center; font-size: 1.5rem;
  background: linear-gradient(135deg, var(--primary), var(--accent)); color: #fff;
  box-shadow: 0 4px 15px rgba(37,99,235,.3); transition: var(--transition);
}
.why-card:hover .why-icon { transform: scale(1.12) rotate(-5deg); }
.why-title { font-size: .95rem; font-weight: 700; color: var(--text); margin-bottom: 6px; }
.why-desc { font-size: .8rem; color: var(--text-muted); line-height: 1.5; }

/* =========================================
   BLOG
   ========================================= */
#blog { background: var(--bg-secondary); }
.blog-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px; }
.blog-card {
  background: var(--bg-card); border: 1.5px solid var(--border); border-radius: var(--radius-lg);
  overflow: hidden; transition: transform .35s cubic-bezier(.34,1.56,.64,1), box-shadow .35s ease, border-color .3s ease;
  cursor: pointer; display: flex; flex-direction: column;
}
.blog-card:hover {
  transform: translateY(-8px) scale(1.01);
  box-shadow: 0 16px 36px rgba(37,99,235,.22), 0 0 25px rgba(37,99,235,.15);
  border-color: var(--primary);
}
.blog-thumb {
  height: 200px; overflow: hidden; position: relative;
  background: linear-gradient(135deg, #DBEAFE, #EDE9FE);
  display: flex; align-items: center; justify-content: center;
}
.blog-thumb-inner {
  font-size: 4rem; transition: transform .4s ease;
}
.blog-card:hover .blog-thumb-inner { transform: scale(1.15); }
.blog-cat {
  position: absolute; top: 16px; left: 16px;
  background: var(--primary); color: #fff; padding: 4px 12px;
  border-radius: var(--radius-full); font-size: .72rem; font-weight: 700;
}
.blog-body { padding: 24px; }
.blog-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; font-size: .78rem; color: var(--text-muted); }
.blog-meta span { display: flex; align-items: center; gap: 4px; }
.blog-title { font-size: 1.05rem; font-weight: 700; color: var(--text); line-height: 1.4; margin-bottom: 10px; }
.blog-excerpt { font-size: .83rem; color: var(--text-muted); line-height: 1.6; margin-bottom: 16px; }
.read-more {
  display: inline-flex; align-items: center; gap: 6px; font-size: .85rem; font-weight: 600;
  color: var(--primary); transition: var(--transition);
}
.read-more:hover { gap: 10px; }

/* =========================================
   FAQ
   ========================================= */
#faq { background: var(--bg); }
.faq-list { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg);
  overflow: hidden; transition: var(--transition);
}
.faq-item.open { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,.12); }
.faq-q {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 20px 24px; cursor: pointer; user-select: none; transition: var(--transition);
}
.faq-q:hover { background: var(--bg-secondary); }
.faq-q-text { font-size: .95rem; font-weight: 600; color: var(--text); flex: 1; }
.faq-icon {
  width: 28px; height: 28px; border-radius: 50%; flex-shrink: 0;
  background: var(--bg-secondary); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); font-size: 1rem; transition: var(--transition);
}
.faq-item.open .faq-icon { background: var(--primary); border-color: var(--primary); color: #fff; transform: rotate(45deg); }
.faq-a {
  max-height: 0; overflow: hidden; transition: max-height .4s cubic-bezier(.4,0,.2,1), padding .3s ease;
  padding: 0 24px;
}
.faq-a-inner { padding-bottom: 20px; font-size: .9rem; color: var(--text-muted); line-height: 1.7; }
.faq-item.open .faq-a { max-height: 600px !important; display: block !important; padding: 0 24px 20px 24px !important; }

/* =========================================
   NEWSLETTER
   ========================================= */
#newsletter {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark), var(--accent));
  padding: 80px 0; position: relative; overflow: hidden;
}
#newsletter::before {
  content: ''; position: absolute; inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.newsletter-inner { position: relative; z-index: 1; text-align: center; max-width: 560px; margin: 0 auto; padding: 0 24px; }
.newsletter-icon { font-size: 2.5rem; margin-bottom: 16px; color: rgba(255,255,255,.8); }
.newsletter-title { font-size: clamp(1.6rem, 3vw, 2rem); font-weight: 800; color: #fff; margin-bottom: 10px; }
.newsletter-sub { color: rgba(255,255,255,.75); margin-bottom: 32px; font-size: .95rem; }
.newsletter-form { display: flex; gap: 10px; max-width: 460px; margin: 0 auto; }
#newsletter-email {
  flex: 1; padding: 14px 20px; border-radius: var(--radius); font-size: .95rem;
  background: rgba(255,255,255,.15); border: 1px solid rgba(255,255,255,.3);
  color: #fff; backdrop-filter: blur(8px);
}
#newsletter-email::placeholder { color: rgba(255,255,255,.6); }
#newsletter-email:focus { border-color: rgba(255,255,255,.7); outline: none; }
.newsletter-btn {
  padding: 14px 24px; border-radius: var(--radius); font-size: .95rem; font-weight: 700;
  background: #fff; color: var(--primary); white-space: nowrap;
  transition: var(--transition); box-shadow: 0 4px 15px rgba(0,0,0,.2);
}
.newsletter-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(0,0,0,.3); }
.newsletter-note { margin-top: 14px; font-size: .78rem; color: rgba(255,255,255,.55); }

/* =========================================
   FOOTER
   ========================================= */
#site-footer {
  background: var(--bg-dark); color: #94A3B8; padding: 72px 0 0;
}
[data-theme="dark"] #site-footer { background: #020617; }
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px;
  padding-bottom: 56px; border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer-brand .site-logo { color: #fff; margin-bottom: 16px; }
.footer-brand .site-logo .logo-text { color: #fff; }
.footer-brand p { font-size: .88rem; line-height: 1.7; max-width: 280px; }
.social-links { display: flex; gap: 10px; margin-top: 20px; }
.social-link {
  width: 38px; height: 38px; border-radius: 10px;
  background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.1);
  display: flex; align-items: center; justify-content: center; color: #94A3B8;
  font-size: .95rem; transition: var(--transition);
}
.social-link:hover { background: var(--primary); border-color: var(--primary); color: #fff; transform: translateY(-2px); }
.footer-col h4 { font-size: .85rem; font-weight: 700; color: #E2E8F0; margin-bottom: 16px; letter-spacing: .05em; text-transform: uppercase; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul a { font-size: .87rem; color: #64748B; transition: var(--transition); display: flex; align-items: center; gap: 6px; }
.footer-col ul a:hover { color: var(--primary); padding-left: 4px; }
.footer-bottom {
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap;
  gap: 12px; padding: 20px 0; font-size: .82rem;
}
.footer-bottom-links { display: flex; gap: 20px; }
.footer-bottom-links a { color: #4B5563; transition: var(--transition); }
.footer-bottom-links a:hover { color: var(--primary); }

/* =========================================
   TOAST
   ========================================= */
#toast {
  position: fixed; bottom: 24px; right: 24px; z-index: 9999;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px 20px; box-shadow: var(--shadow-xl);
  display: flex; align-items: center; gap: 10px;
  transform: translateY(100px); opacity: 0; transition: var(--transition);
  font-size: .9rem; font-weight: 500; color: var(--text); min-width: 260px;
}
#toast.show { transform: translateY(0); opacity: 1; }
#toast i { font-size: 1.2rem; color: var(--success); }

/* =========================================
   RESPONSIVE
   ========================================= */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .nav-links { display: none; }
  .hamburger { display: flex; }
}
@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .hero-content { padding: 60px 16px; }
  .stat-item:not(:last-child) { border-right: none; border-bottom: 1px solid var(--border); }
  .hero-stats { flex-direction: column; }
  .categories-grid { grid-template-columns: repeat(2, 1fr); }
  .tools-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .newsletter-form { flex-direction: column; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .fi { display: none; }
  .ad-slot-header { display: none; }
}
@media (max-width: 480px) {
  .categories-grid { grid-template-columns: 1fr; }
  .hero-content h1 { font-size: 2rem; }
  .hero-cta { flex-direction: column; width: 100%; }
  .hero-cta .btn { width: 100%; justify-content: center; }
}

/* =========================================
   ANIMATIONS (AOS-like)
   ========================================= */
[data-aos] { transition: opacity .6s ease, transform .6s ease; }
[data-aos="fade-up"] { opacity: 0; transform: translateY(30px); }
[data-aos="fade-up"].aos-animate { opacity: 1; transform: translateY(0); }

/* Skip to content */
.skip-link {
  position: absolute; top: -100%; left: 16px;
  background: var(--primary); color: #fff; padding: 8px 16px;
  border-radius: var(--radius-sm); z-index: 9999; font-weight: 600;
}
.skip-link:focus { top: 8px; }

/* =========================================
   BREADCRUMB NAVIGATION
   ========================================= */
.breadcrumb-wrap {
  padding: 12px 0; background: var(--bg-secondary); border-bottom: 1px solid var(--border);
  margin-top: var(--header-h);
}
.breadcrumb-list {
  display: flex !important; flex-direction: row !important; align-items: center !important;
  gap: 8px; font-size: .88rem; color: var(--text-muted); flex-wrap: wrap;
  list-style: none !important; margin: 0 !important; padding: 0 !important;
}
.breadcrumb-item {
  display: inline-flex !important; align-items: center !important; gap: 6px;
  list-style: none !important; margin: 0 !important; padding: 0 !important;
}
.breadcrumb-item a {
  color: var(--text-muted); font-weight: 500; transition: var(--transition);
  text-decoration: none; display: inline-flex; align-items: center; gap: 6px;
}
.breadcrumb-item a:hover { color: var(--primary); }
.breadcrumb-item.active { color: var(--primary); font-weight: 600; }
.breadcrumb-sep {
  color: var(--text-light); font-size: .75rem; display: inline-flex !important;
  align-items: center !important; list-style: none !important; margin: 0 !important; padding: 0 !important;
}

/* =========================================
   CATEGORY FILTER PILLS
   ========================================= */
.filter-pills-wrap {
  display: flex; align-items: center; justify-content: center;
  flex-wrap: wrap; gap: 10px; margin-bottom: 36px;
}
.filter-pill {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 20px; border-radius: var(--radius-full);
  font-size: .88rem; font-weight: 600; background: var(--bg-card);
  border: 1.5px solid var(--border); color: var(--text-muted);
  cursor: pointer; transition: var(--transition); box-shadow: var(--shadow-sm);
}
.filter-pill:hover {
  border-color: var(--primary); color: var(--primary); transform: translateY(-2px);
}
.filter-pill.active {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff; border-color: transparent; box-shadow: 0 4px 15px rgba(37,99,235,.35);
}

/* =========================================
   INTERACTIVE TOOL MODAL
   ========================================= */
.modal-overlay {
  position: fixed; inset: 0; z-index: 9999;
  background: rgba(15,23,42,.65); backdrop-filter: blur(12px);
  display: flex; align-items: center; justify-content: center;
  padding: 20px; opacity: 0; visibility: hidden;
  transition: opacity .3s ease, visibility .3s ease;
}
.modal-overlay.open {
  opacity: 1; visibility: visible;
}
.modal-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-xl); box-shadow: var(--shadow-xl);
  width: 100%; max-width: 640px; max-height: 90vh; display: flex;
  flex-direction: column; overflow: hidden; transform: scale(.92) translateY(20px);
  transition: transform .3s cubic-bezier(.4,0,.2,1);
}
.modal-overlay.open .modal-card {
  transform: scale(1) translateY(0);
}
.modal-header {
  padding: 24px 28px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  background: var(--bg-secondary);
}
.modal-title-wrap { display: flex; align-items: center; gap: 14px; }
.modal-icon {
  width: 48px; height: 48px; border-radius: var(--radius);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff; font-size: 1.3rem; display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; box-shadow: 0 4px 12px rgba(37,99,235,.3);
}
#modal-tool-title { font-size: 1.2rem; font-weight: 800; color: var(--text); line-height: 1.2; }
.modal-subtitle { font-size: .8rem; color: var(--text-muted); margin-top: 2px; }
.modal-close {
  width: 36px; height: 36px; border-radius: 50%; background: var(--bg-card);
  border: 1px solid var(--border); color: var(--text-muted); font-size: 1rem;
  display: flex; align-items: center; justify-content: center; transition: var(--transition);
}
.modal-close:hover { background: var(--danger); border-color: var(--danger); color: #fff; }
.modal-body {
  padding: 28px; overflow-y: auto; flex: 1; display: flex; flex-direction: column; gap: 20px;
}
.modal-footer {
  padding: 18px 28px; border-top: 1px solid var(--border); background: var(--bg-secondary);
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
}
.modal-badge { font-size: .8rem; color: var(--success); font-weight: 600; display: flex; align-items: center; gap: 6px; }

/* Modal Tool Widgets */
.tool-widget-group { display: flex; flex-direction: column; gap: 12px; }
.tool-widget-label { font-size: .85rem; font-weight: 700; color: var(--text); display: flex; justify-content: space-between; }
.tool-widget-input, .tool-widget-textarea {
  width: 100%; padding: 14px 16px; border-radius: var(--radius);
  background: var(--bg-secondary); border: 1.5px solid var(--border);
  color: var(--text); font-size: .95rem; transition: var(--transition);
  font-family: inherit;
}
.tool-widget-textarea { min-height: 110px; resize: vertical; }
.tool-widget-input:focus, .tool-widget-textarea:focus {
  border-color: var(--primary); background: var(--bg-card); box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}
.widget-result-box {
  background: var(--bg-secondary); border: 1.5px solid var(--border);
  border-radius: var(--radius); padding: 16px; font-family: monospace;
  font-size: .95rem; color: var(--primary); word-break: break-all;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.widget-stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(110px, 1fr)); gap: 12px; }
.widget-stat-card {
  background: var(--bg-secondary); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 14px; text-align: center;
}
.widget-stat-val { font-size: 1.3rem; font-weight: 800; color: var(--primary); }
.widget-stat-lbl { font-size: .75rem; color: var(--text-muted); font-weight: 600; text-transform: uppercase; margin-top: 4px; }
.widget-flex-row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.btn-copy {
  padding: 8px 16px; border-radius: var(--radius-sm); font-size: .85rem; font-weight: 600;
  background: var(--primary); color: #fff; border: none; cursor: pointer;
  display: inline-flex; align-items: center; gap: 6px; transition: var(--transition);
}
.btn-copy:hover { opacity: .9; transform: translateY(-1px); }
.qr-preview-container { text-align: center; padding: 20px; background: var(--bg-secondary); border-radius: var(--radius); border: 1px dashed var(--border); }