:root {
  --bg-0: #05070c;
  --bg-1: #0a0f1a;
  --panel: rgba(11, 16, 28, 0.82);
  --panel-2: rgba(14, 20, 34, 0.78);
  --line: rgba(138, 160, 196, 0.2);
  --line-strong: rgba(170, 188, 222, 0.34);
  --text: #e9edff;
  --muted: #9da8c9;
  --accent: #7c8cff;
  --accent-2: #5e6fd8;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 82% 12%, rgba(92, 112, 180, 0.18), transparent 36%),
    radial-gradient(circle at 15% 86%, rgba(73, 93, 148, 0.14), transparent 30%),
    linear-gradient(180deg, var(--bg-0) 0%, #060910 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(140, 112, 222, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140, 112, 222, 0.045) 1px, transparent 1px);
  background-size: 50px 50px;
  mask-image: radial-gradient(circle at center, black 22%, transparent 78%);
}

.glass {
  background: linear-gradient(145deg, var(--panel), var(--panel-2));
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: 0 20px 44px rgba(0, 0, 0, 0.44);
  backdrop-filter: blur(12px);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 20px;
  background: rgba(9, 13, 28, 0.78);
  color: #eef1ff;
  font-size: 1rem;
  cursor: pointer;
  transition: 0.22s ease;
  text-decoration: none;
}

.btn:hover {
  transform: translateY(-1px);
  border-color: var(--line-strong);
  background: rgba(125, 140, 200, 0.12);
}

.btn-primary {
  background: linear-gradient(90deg, var(--accent-2), var(--accent));
  border-color: rgba(167, 182, 234, 0.46);
  box-shadow: 0 0 20px rgba(115, 132, 205, 0.2);
}

.landing-wrap {
  max-width: 1080px;
  margin: 0 auto;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 20px;
}

.landing-card {
  width: min(900px, 100%);
  text-align: center;
  padding: 34px 26px;
}

.landing-card-upgrade {
  position: relative;
  overflow: hidden;
  border-color: rgba(170, 188, 222, 0.3);
  box-shadow:
    0 22px 48px rgba(0, 0, 0, 0.5),
    0 0 36px rgba(112, 133, 194, 0.12);
}

.landing-card-upgrade::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 20% 20%, rgba(109, 132, 196, 0.12), transparent 34%),
    radial-gradient(circle at 85% 80%, rgba(109, 132, 196, 0.1), transparent 36%);
}

.n-mark {
  font-size: 70px;
  color: #b9c6ef;
  line-height: 1;
  margin-bottom: 8px;
}

.landing-title {
  margin: 0;
  font-size: clamp(2rem, 5vw, 4.1rem);
  letter-spacing: 0.12em;
}

.landing-sub {
  margin: 12px auto 0;
  color: var(--muted);
  max-width: 54ch;
  font-size: clamp(1rem, 1.8vw, 1.22rem);
}

.landing-actions {
  margin-top: 24px;
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.landing-actions .btn-primary {
  min-width: 220px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.small-muted {
  color: var(--muted);
  font-size: 0.93rem;
}

.dash-wrap {
  max-width: 1640px;
  margin: 0 auto;
  padding: 16px;
}

.dash-grid {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 14px;
}

.sidebar {
  min-height: calc(100vh - 32px);
  padding: 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.wordmark {
  letter-spacing: 0.42em;
  font-weight: 600;
}

.submark {
  margin-top: 6px;
  letter-spacing: 0.46em;
  font-size: 0.8rem;
  color: var(--muted);
}

.nav {
  margin-top: 24px;
  display: grid;
  gap: 8px;
}

.nav a {
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid transparent;
  color: #c8d3f4;
  text-decoration: none;
  transition: 0.2s ease;
}

.nav a.active,
.nav a:hover {
  border-color: var(--line);
  background: rgba(125, 140, 200, 0.1);
  color: #fff;
}

.nav-btn {
  width: 100%;
  text-align: left;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid transparent;
  background: transparent;
  color: #c8d3f4;
  font: inherit;
  cursor: pointer;
  transition: 0.2s ease;
}

.nav-btn:hover {
  border-color: var(--line);
  background: rgba(125, 140, 200, 0.1);
  color: #fff;
}

.nav-group {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(140, 88, 255, 0.08);
  padding: 8px;
}

.nav-group summary {
  list-style: none;
  cursor: pointer;
  color: #fff;
  padding: 6px 8px;
  border-radius: 8px;
  user-select: none;
}

.nav-group summary::-webkit-details-marker {
  display: none;
}

.subnav {
  display: grid;
  gap: 6px;
  margin-top: 6px;
}

.subnav a {
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid transparent;
  color: #c8d3f4;
}

.subnav a:hover {
  border-color: var(--line);
  background: rgba(140, 88, 255, 0.12);
  color: #fff;
}

.user-box {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  background: rgba(7, 10, 22, 0.76);
}

.user-meta-row {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.user-meta-copy {
  min-width: 0;
  flex: 1;
}

.profile-name {
  min-width: 0;
  font-size: clamp(0.82rem, 1vw, 1rem);
  font-weight: 600;
  line-height: 1.2;
  overflow-wrap: anywhere;
}

.profile-email {
  margin-top: 8px;
  font-size: clamp(0.7rem, 0.9vw, 0.93rem);
  line-height: 1.3;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.avatar {
  width: 38px;
  height: 38px;
  min-width: 38px;
  min-height: 38px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 1rem;
  line-height: 1;
  text-transform: uppercase;
  overflow: hidden;
  white-space: nowrap;
  background: rgba(120, 138, 200, 0.2);
  border: 1px solid var(--line);
}

.xp {
  margin-top: 10px;
  height: 6px;
  border-radius: 999px;
  overflow: hidden;
  background: #1d2542;
}

.xp > div {
  width: 28%;
  height: 100%;
  background: linear-gradient(90deg, #5463b3, #7f90df);
}

.main {
  min-height: calc(100vh - 32px);
  padding: 26px;
  display: flex;
  flex-direction: column;
}

.dash-header {
  border-bottom: 1px solid var(--line);
  padding-bottom: 18px;
  margin-bottom: 14px;
}

.welcome {
  margin: 0;
  font-size: clamp(1.8rem, 3vw, 2.5rem);
}

.welcome-sub {
  margin-top: 8px;
  color: var(--muted);
  font-size: 1.06rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.card {
  position: relative;
  overflow: hidden;
  min-height: 240px;
  padding: 18px;
}

.card::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at 80% 75%, rgba(103, 122, 184, 0.12), transparent 46%);
}

.card-title {
  margin: 12px 0 8px;
  font-size: 1.8rem;
}

.card-copy {
  margin: 0;
  color: #c3cde8;
  line-height: 1.55;
}

.card-badge {
  display: inline-block;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 0.74rem;
  letter-spacing: 0.15em;
  color: #c8d6f8;
  background: rgba(119, 136, 196, 0.1);
}

.card .btn {
  margin-top: 16px;
}

.card.featured {
  border-color: var(--line-strong);
  box-shadow: 0 0 24px rgba(109, 132, 196, 0.16);
}

.leaderboard-preview-card {
  margin-top: 14px;
  padding: 18px;
}

.leaderboard-preview-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 14px;
}

.leaderboard-preview-title {
  margin: 12px 0 0;
  font-size: 1.45rem;
}

.leaderboard-preview-link {
  flex-shrink: 0;
}

.leaderboard-preview-list {
  display: grid;
  gap: 10px;
}

.leaderboard-preview-row {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(8, 12, 24, 0.68);
}

.leaderboard-preview-rank {
  font-size: 1.05rem;
  font-weight: 700;
  color: #d8e2ff;
}

.leaderboard-preview-meta {
  min-width: 0;
}

.leaderboard-preview-name {
  font-size: 1rem;
  font-weight: 600;
  color: #eef2ff;
  overflow-wrap: anywhere;
}

.leaderboard-preview-stats {
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.88rem;
}

.leaderboard-preview-elo {
  text-align: right;
  font-size: 1.2rem;
  font-weight: 700;
  color: #cfd8ff;
}

.leaderboard-empty-state {
  padding: 12px 2px 2px;
}

.footer-note {
  margin-top: 14px;
  color: var(--muted);
}

.inline-menu {
  margin-top: 14px;
  padding: 16px;
  width: 100%;
  flex: 1;
  min-height: 460px;
}

.inline-menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.inline-menu-header h3 {
  margin: 0;
  font-size: 1.2rem;
}

.inline-menu-actions {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 12px;
}

.menu-option {
  display: block;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
  background: rgba(11, 15, 30, 0.72);
  color: #e8eeff;
  text-decoration: none;
  transition: 0.22s ease;
}

.menu-option:hover {
  border-color: var(--line-strong);
  background: rgba(120, 138, 200, 0.1);
  transform: translateY(-1px);
}

.menu-option-title {
  display: block;
  font-size: 1.2rem;
  font-weight: 600;
}

.menu-option-sub {
  display: block;
  margin-top: 5px;
  color: var(--muted);
}

.main.menu-open .card-grid,
.main.menu-open .leaderboard-preview-card,
.main.menu-open .footer-note {
  display: none;
}

@media (max-width: 1220px) {
  .card-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 980px) {
  .dash-grid {
    grid-template-columns: 1fr;
  }
  .sidebar,
  .main {
    min-height: auto;
  }
}

@media (max-width: 760px) {
  .card-grid {
    grid-template-columns: 1fr;
  }
  .leaderboard-preview-header {
    flex-direction: column;
    align-items: stretch;
  }
  .leaderboard-preview-link {
    width: 100%;
  }
  .leaderboard-preview-row {
    grid-template-columns: 40px minmax(0, 1fr);
  }
  .leaderboard-preview-elo {
    grid-column: 2;
    text-align: left;
  }
  .main {
    padding: 16px;
  }
  .dash-wrap {
    padding: 10px;
  }
}