:root {
  --bg: #0b0d12;
  --surface: #11141c;
  --surface-2: #161a24;
  --border: #1f2533;
  --text: #e7eaf3;
  --text-dim: #8a91a3;
  --accent: #7c5cff;
  --accent-2: #00d4ff;
  --danger: #ff5d6c;
  --radius: 14px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(60vw 60vw at 10% 0%, rgba(124,92,255,0.18), transparent 60%),
    radial-gradient(50vw 50vw at 100% 100%, rgba(0,212,255,0.12), transparent 60%);
  pointer-events: none;
  z-index: -1;
}

/* ===== topbar ===== */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 28px;
  border-bottom: 1px solid var(--border);
  background: rgba(11,13,18,0.6);
  backdrop-filter: blur(8px);
  position: sticky; top: 0; z-index: 10;
}
.brand {
  display: flex; align-items: baseline; gap: 8px;
  font-weight: 600;
}
.brand-mark {
  display: inline-grid; place-items: center;
  width: 28px; height: 28px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #0b0d12;
  font-size: 16px;
  transform: translateY(2px);
}
.brand-name { font-size: 17px; letter-spacing: 0.3px; }
.brand-suffix { color: var(--text-dim); font-weight: 400; font-size: 14px; }
.user-area { display: flex; align-items: center; gap: 12px; }
.user-name { color: var(--text-dim); font-size: 13px; }

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 7px 14px;
  border-radius: 9px;
  font-size: 13px;
  cursor: pointer;
  transition: border-color .15s, background .15s;
}
.btn-ghost:hover { border-color: #2c3346; background: var(--surface); }

/* ===== layout ===== */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 48px 28px 80px;
}
.hero { margin-bottom: 32px; }
.hero h1 {
  margin: 0 0 6px;
  font-size: 30px;
  letter-spacing: -0.5px;
}
.hero p { margin: 0; color: var(--text-dim); }

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

.card {
  display: grid;
  grid-template-columns: 48px 1fr 20px;
  align-items: center;
  gap: 16px;
  padding: 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: inherit;
  transition: transform .12s ease, border-color .15s, background .15s;
}
.card:hover {
  transform: translateY(-1px);
  border-color: #2c3346;
  background: var(--surface-2);
}
.card-icon {
  width: 48px; height: 48px;
  border-radius: 10px;
  display: grid; place-items: center;
  font-weight: 700;
  font-size: 18px;
  color: #fff;
  letter-spacing: 0.5px;
}
.card-body h3 {
  margin: 0 0 2px;
  font-size: 15px;
  font-weight: 600;
}
.card-body p {
  margin: 0;
  color: var(--text-dim);
  font-size: 13px;
}
.card-arrow {
  width: 18px; height: 18px;
  color: var(--text-dim);
  opacity: 0.6;
  transition: opacity .15s, transform .15s, color .15s;
}
.card:hover .card-arrow {
  opacity: 1;
  color: var(--accent-2);
  transform: translate(2px, -2px);
}

.footnote {
  margin-top: 56px;
  color: var(--text-dim);
  font-size: 12px;
  display: flex;
  gap: 8px;
  justify-content: center;
}

/* ===== auth ===== */
.auth {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}
.auth-card {
  width: 100%;
  max-width: 380px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
}
.auth-brand {
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 24px;
}
.auth-card h1 {
  margin: 0 0 4px;
  font-size: 22px;
  letter-spacing: -0.3px;
}
.auth-sub {
  margin: 0 0 22px;
  color: var(--text-dim);
  font-size: 13px;
}
.auth-error {
  background: rgba(255,93,108,0.08);
  border: 1px solid rgba(255,93,108,0.3);
  color: var(--danger);
  padding: 10px 12px;
  border-radius: 10px;
  font-size: 13px;
  margin-bottom: 16px;
}
.auth-form { display: grid; gap: 14px; }
.auth-form label { display: grid; gap: 6px; }
.auth-form span {
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 0.3px;
  text-transform: uppercase;
}
.auth-form input {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 11px 12px;
  color: var(--text);
  font-size: 14px;
  transition: border-color .15s, box-shadow .15s;
}
.auth-form input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(124,92,255,0.15);
}

.btn-primary {
  margin-top: 6px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border: none;
  color: #0b0d12;
  font-weight: 600;
  padding: 11px 14px;
  border-radius: 10px;
  font-size: 14px;
  cursor: pointer;
  transition: filter .15s, transform .12s;
}
.btn-primary:hover { filter: brightness(1.05); }
.btn-primary:active { transform: translateY(1px); }