:root {
  --bg-color: #050505;
  --card-bg: rgba(20, 20, 20, 0.7);
  --accent-color: #00d2ff;
  --accent-gradient: linear-gradient(135deg, #00d2ff 0%, #3a7bd5 100%);
  --text-main: #ffffff;
  --text-sub: #b0b0b0;
  --border-color: rgba(255, 255, 255, 0.1);
  --glow-color: rgba(0, 210, 255, 0.3);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Outfit', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  min-height: 100vh;
  overflow-x: hidden;
  background-image: 
    radial-gradient(at 0% 0%, rgba(58, 123, 213, 0.15) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(0, 210, 255, 0.15) 0px, transparent 50%);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

header {
  text-align: center;
  margin-bottom: 4rem;
  padding-top: 2rem;
}

h1 {
  font-size: 3rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 1rem;
  letter-spacing: -1px;
}

.subtitle {
  color: var(--text-sub);
  font-size: 1.2rem;
}

.hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.tool-card {
  background: var(--card-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 2rem;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  text-decoration: none;
  display: flex;
  flex-direction: column;
}

.tool-card:hover {
  transform: translateY(-10px);
  border-color: var(--accent-color);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), 0 0 20px var(--glow-color);
}

.tool-card i {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  color: var(--accent-color);
}

.tool-card h2 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--text-main);
}

.tool-card p {
  color: var(--text-sub);
  line-height: 1.6;
  font-size: 0.95rem;
}

.card-arrow {
  margin-top: auto;
  padding-top: 1.5rem;
  color: var(--accent-color);
  display: flex;
  align-items: center;
  font-weight: 600;
  font-size: 0.9rem;
}

.card-arrow svg {
  margin-left: 0.5rem;
  transition: transform 0.3s ease;
}

.tool-card:hover .card-arrow svg {
  transform: translateX(5px);
}

/* Ad Placeholders */
.ad-slot {
  background: rgba(40, 40, 40, 0.3);
  border: 1px dashed var(--border-color);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-sub);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin: 2rem 0;
}

.ad-slot.top-banner {
  height: 90px;
  width: 100%;
}

.ad-slot.sidebar {
  height: 600px;
  width: 160px;
}

footer {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--text-sub);
  border-top: 1px solid var(--border-color);
  margin-top: 4rem;
}

.coffee-btn {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: #FFDD00;
  color: #000;
  padding: 1rem 1.5rem;
  border-radius: 50px;
  font-weight: 700;
  text-decoration: none;
  box-shadow: 0 10px 20px rgba(0,0,0,0.3);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  z-index: 100;
  transition: transform 0.3s ease;
}

.coffee-btn:hover {
  transform: scale(1.05);
}

@media (max-width: 768px) {
  h1 { font-size: 2.2rem; }
  .hub-grid { grid-template-columns: 1fr; }
}