:root {
  --radius: 12px;
  --font-main: 'Nunito', sans-serif;
  --font-mono: 'Nunito', monospace;
  --transition-speed: 0.4s;
}

[data-theme="light"] {
  --bg-main: #F9F6FE;
  --card-bg: #FFFFFF;
  --text-primary: #1E1B18;
  --text-secondary: #736D68;
  --accent: #7C4DFF;
  --accent-faint: rgba(124, 77, 255, 0.1);
  --border-subtle: #EAE1F7;
  --status-bg: #EFE9F9;
  --footer-text: #9A92A3;
  --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.05);
  --shadow-hover: 0 8px 24px rgba(124, 77, 255, 0.15);
}

[data-theme="dark"] {
  --bg-main: #1C1825;
  --card-bg: #2A1F45;
  --text-primary: #F2EFEA;
  --text-secondary: #A59D94;
  --accent: #B084FF;
  --accent-faint: rgba(176, 132, 255, 0.1);
  --border-subtle: #3B3051;
  --status-bg: #221B33;
  --footer-text: #7A7480;
  --shadow-card: 0 4px 12px rgba(0, 0, 0, 0.2);
  --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.4);
}

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

body {
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: var(--font-main);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color var(--transition-speed), color var(--transition-speed);
  overflow-x: hidden;
}

.wrapper {
  max-width: 1000px;
  margin: 0 auto;
  padding: 2rem;
  width: 100%;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.container {
  width: 100%;
}

.theme-toggle {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1.2rem;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 50%;
  transition: color 0.3s, transform 0.3s;
  z-index: 10;
}

.theme-toggle:hover {
  color: var(--accent);
  transform: rotate(30deg);
  background: var(--accent-faint);
}

.hero {
  text-align: center;
  padding: 4rem 1rem 3rem;
  margin-bottom: 2rem;
  position: relative;
}

.logo-container {
  margin-bottom: 1.5rem;
  display: inline-block;
  transition: transform 0.5s ease;
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 450px;
  margin: 0 auto;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 4rem;
}

.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 2rem;
  border: 1px solid var(--border-subtle);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  box-shadow: var(--shadow-card);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
  border-color: var(--accent);
}

.card-icon {
  font-size: 1.5rem;
  color: var(--accent);
  margin-bottom: 1.2rem;
  background: var(--accent-faint);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.8rem;
  color: var(--text-primary);
}

.card-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.status-panel {
  display: flex;
  justify-content: center;
  gap: 3rem;
  padding: 1.5rem;
  background: var(--status-bg);
  border-radius: var(--radius);
  margin-bottom: 3rem;
  border: 1px solid var(--border-subtle);
}

.status-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  font-family: var(--font-mono);
}

.status-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  margin-bottom: 0.2rem;
}

.status-value {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.status-value.highlight {
  color: var(--accent);
}

.footer {
  text-align: center;
  color: var(--footer-text);
  font-size: 0.85rem;
  margin-top: auto;
  padding-bottom: 2rem;
}

.footer-note {
  font-size: 0.75rem;
  opacity: 0.6;
  margin-top: 0.5rem;
}

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s cubic-bezier(0.2, 0.8, 0.2, 1), transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.delay-1 {
  transition-delay: 0.1s;
}

.delay-2 {
  transition-delay: 0.2s;
}

.delay-3 {
  transition-delay: 0.3s;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2rem;
  }
  .grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .status-panel {
    flex-direction: column;
    gap: 1.5rem;
    text-align: center;
  }
  .mobile-hidden {
    display: none;
  }
}