/* QuickTools - Global Styles */
:root {
  --bg: #0a0a0f;
  --bg-card: #12121a;
  --bg-card-hover: #1a1a25;
  --bg-input: #1a1a28;
  --border: #2a2a3a;
  --border-focus: #6366f1;
  --text: #e8e8f0;
  --text-muted: #8888a0;
  --text-dim: #555570;
  --accent: #6366f1;
  --accent-hover: #818cf8;
  --accent-glow: rgba(99,102,241,0.15);
  --green: #22c55e;
  --green-bg: rgba(34,197,94,0.1);
  --red: #ef4444;
  --red-bg: rgba(239,68,68,0.1);
  --yellow: #eab308;
  --yellow-bg: rgba(234,179,8,0.1);
  --blue: #3b82f6;
  --blue-bg: rgba(59,130,246,0.1);
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0,0,0,0.3);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.4);
  --transition: 0.2s ease;
  --max-w: 1200px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-hover); }

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10,10,15,0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--accent), #a855f7);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

.nav { display: flex; gap: 8px; align-items: center; }

.nav-link {
  color: var(--text-muted);
  font-size: 0.875rem;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.nav-link:hover { color: var(--text); background: var(--bg-card); }
.nav-link.active { color: var(--accent); background: var(--accent-glow); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 4px;
}

/* Hero */
.hero {
  text-align: center;
  padding: 80px 24px 60px;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(99,102,241,0.08), transparent 70%);
  pointer-events: none;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #fff 0%, #a5b4fc 50%, #818cf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 32px;
}

/* Search */
.search-wrap {
  max-width: 500px;
  margin: 0 auto;
  position: relative;
}

.search-wrap input {
  width: 100%;
  padding: 14px 20px 14px 48px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 50px;
  color: var(--text);
  font-size: 1rem;
  font-family: var(--font);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.search-wrap input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.search-wrap input::placeholder { color: var(--text-dim); }

.search-icon {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dim);
  font-size: 1.1rem;
}

/* Container */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* Section */
.section {
  padding: 60px 0;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.section-sub {
  color: var(--text-muted);
  margin-bottom: 32px;
  font-size: 0.95rem;
}

/* Tool Grid */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: all var(--transition);
  cursor: pointer;
  display: block;
  position: relative;
  overflow: hidden;
}

.tool-card:hover {
  border-color: var(--border-focus);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.tool-card-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: 16px;
}

.tool-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.tool-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.tool-tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 12px;
}

.tag-finance { background: var(--green-bg); color: var(--green); }
.tag-health { background: var(--red-bg); color: #f87171; }
.tag-convert { background: var(--blue-bg); color: var(--blue); }
.tag-text { background: var(--yellow-bg); color: var(--yellow); }
.tag-ai { background: rgba(168,85,247,0.1); color: #a855f7; }
.tag-dev { background: rgba(236,72,153,0.1); color: #ec4899; }

/* Tool Page Layout */
.tool-page {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

.tool-page h1 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.tool-page .tool-desc {
  color: var(--text-muted);
  margin-bottom: 32px;
  font-size: 1rem;
}

/* Form Elements */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 1rem;
  font-family: var(--font);
  outline: none;
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--border-focus);
}

.form-group input::placeholder { color: var(--text-dim); }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  transition: all var(--transition);
}

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

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 4px 16px rgba(99,102,241,0.3);
}

.btn-secondary {
  background: var(--bg-input);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-focus);
}

/* Result Card */
.result-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-top: 24px;
}

.result-label {
  font-size: 0.8rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}

.result-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
}

.result-details {
  margin-top: 16px;
  display: grid;
  gap: 12px;
}

.result-row {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

.result-row:last-child { border-bottom: none; }
.result-row span:first-child { color: var(--text-muted); }
.result-row span:last-child { font-weight: 600; }

/* Comparison Table */
.compare-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
  font-size: 0.9rem;
}

.compare-table th {
  text-align: left;
  padding: 12px 16px;
  background: var(--bg-input);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.compare-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

.compare-table tr:hover td { background: var(--bg-card-hover); }

/* Slider */
input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--border);
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(99,102,241,0.3);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--green);
  color: #fff;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  opacity: 0;
  transform: translateY(10px);
  transition: all 0.3s ease;
  z-index: 1000;
  pointer-events: none;
}

.toast.show { opacity: 1; transform: translateY(0); }

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 40px 24px;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.85rem;
}

.footer a { color: var(--text-muted); }
.footer a:hover { color: var(--accent); }

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

/* Color Picker Preview */
.color-preview {
  width: 100%;
  height: 80px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  margin-top: 8px;
}

/* Table wrapper */
.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-green { background: var(--green-bg); color: var(--green); }
.badge-red { background: var(--red-bg); color: var(--red); }
.badge-yellow { background: var(--yellow-bg); color: var(--yellow); }

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 24px;
}

.breadcrumb a { color: var(--text-muted); }
.breadcrumb span { color: var(--text-dim); }

/* Tabs */
.tabs {
  display: flex;
  gap: 4px;
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  padding: 4px;
  margin-bottom: 24px;
}

.tab-btn {
  flex: 1;
  padding: 10px 16px;
  background: none;
  border: none;
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  transition: all var(--transition);
}

.tab-btn.active {
  background: var(--accent);
  color: #fff;
}

.tab-btn:hover:not(.active) { color: var(--text); }

.tab-content { display: none; }
.tab-content.active { display: block; }

/* Responsive */
@media (max-width: 768px) {
  .nav { display: none; }
  .nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 16px;
    gap: 4px;
  }
  .nav-toggle { display: block; }
  .hero { padding: 48px 24px 40px; }
  .hero h1 { font-size: 2rem; }
  .form-row { grid-template-columns: 1fr; }
  .tool-grid { grid-template-columns: 1fr; }
  .compare-table { font-size: 0.8rem; }
  .compare-table th,
  .compare-table td { padding: 8px 10px; }
}

/* AdSense placeholder */
.ad-slot {
  background: var(--bg-card);
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: 20px;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.8rem;
  margin: 24px 0;
}

/* Scrollbar */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-dim); }