:root {
  --bg: #090e1d;
  --panel: #101833;
  --panel-2: #162246;
  --line: rgba(121, 163, 255, 0.24);
  --text: #edf3ff;
  --muted: #aebfe8;
  --primary: #6f87ff;
  --secondary: #58d3ff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  background: radial-gradient(circle at 12% 10%, #1f2f65 0%, #0f1732 45%, #090e1d 100%);
  color: var(--text);
}

.app-layout {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 280px 1fr;
}

.sidebar {
  border-right: 1px solid var(--line);
  background: rgba(9, 14, 29, 0.82);
  padding: 1.2rem;
  position: sticky;
  top: 0;
  height: 100vh;
}

.sidebar-top h2 {
  margin: 0;
}

.sidebar-top p {
  color: var(--muted);
  margin-top: 0.2rem;
}

.sidebar-nav {
  margin: 1.2rem 0;
  display: grid;
  gap: 0.45rem;
}

.nav-link {
  text-decoration: none;
  color: var(--text);
  padding: 0.6rem 0.7rem;
  border-radius: 10px;
  border: 1px solid transparent;
}

.nav-link:hover,
.nav-link.active {
  background: rgba(111, 135, 255, 0.16);
  border-color: var(--line);
}

.sidebar-card {
  margin-top: 1rem;
  padding: 0.9rem;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(22, 34, 70, 0.65);
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  background: #53f5a4;
  margin-right: 0.35rem;
}

.content {
  padding: 1.2rem 1.4rem 2.4rem;
}

.topbar {
  display: flex;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.1rem;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--secondary);
  font-size: 0.8rem;
  margin-bottom: 0.4rem;
}

h1 {
  margin: 0;
  line-height: 1.2;
  max-width: 800px;
  font-size: clamp(1.5rem, 3vw, 2.5rem);
}

h1 span {
  color: var(--secondary);
}

.hero-panel {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1.1rem;
  background: linear-gradient(145deg, rgba(20, 32, 68, 0.85), rgba(13, 20, 43, 0.82));
}

.hero-panel p {
  color: var(--muted);
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: 0.7rem;
  flex-wrap: wrap;
}

.hero-stats {
  display: grid;
  gap: 0.65rem;
}

.hero-stats article {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.8rem;
  background: rgba(7, 12, 27, 0.6);
}

.hero-stats h3 {
  margin: 0;
}

.hero-stats p {
  margin: 0.25rem 0 0;
}

.section {
  margin-top: 1.6rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.8rem;
}

.card {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.9rem;
  background: rgba(16, 24, 51, 0.75);
}

.card p {
  color: var(--muted);
  margin-bottom: 0;
}

.rules-list {
  padding-left: 1rem;
  color: var(--muted);
  line-height: 1.8;
}

.join-section {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(10, 16, 35, 0.82);
  padding: 1rem;
}

.join-form {
  display: grid;
  gap: 0.7rem;
  max-width: 500px;
}

label {
  display: grid;
  gap: 0.3rem;
  font-size: 0.95rem;
}

input,
select {
  border-radius: 10px;
  border: 1px solid rgba(121, 163, 255, 0.35);
  background: #0b122a;
  color: var(--text);
  padding: 0.65rem 0.72rem;
}

.btn {
  border: none;
  border-radius: 12px;
  font-weight: 700;
  padding: 0.74rem 1.05rem;
  text-decoration: none;
  display: inline-block;
  cursor: pointer;
  color: #0a1331;
  background: linear-gradient(120deg, var(--primary), var(--secondary));
}

.btn-ghost {
  border: 1px solid var(--line);
  color: var(--text);
  background: transparent;
}

.btn-small {
  padding: 0.52rem 0.82rem;
}

.form-message {
  min-height: 1.2rem;
  color: var(--secondary);
}

.footer {
  margin-top: 2rem;
  color: var(--muted);
}

.menu-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 8px;
  padding: 0.4rem 0.55rem;
}

@media (max-width: 960px) {
  .app-layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: fixed;
    z-index: 40;
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    width: 250px;
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .menu-toggle {
    display: inline-block;
  }

  .hero-panel {
    grid-template-columns: 1fr;
  }
}