:root {
  --bg: #0f1420;
  --bg-card: #171d2b;
  --border: #262e42;
  --text: #e6e9f0;
  --text-dim: #8b95ab;
  --accent: #4f8cff;
  --bad: #e74c3c;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: radial-gradient(circle at top, #151b2c 0%, #0b0f18 100%);
  color: var(--text);
  min-height: 100vh;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 2rem;
  border-bottom: 1px solid var(--border);
}
.brand h1 { font-size: 1.25rem; margin: 0; font-weight: 600; }
.logout { color: var(--text-dim); text-decoration: none; font-size: 0.9rem; }
.logout:hover { color: var(--text); }

.portal-main { max-width: 900px; margin: 0 auto; padding: 2.5rem 2rem; }
.portal-main h2 { color: var(--text-dim); font-weight: 500; margin-bottom: 1.5rem; }

.tiles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}

.tile {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.5rem;
  text-decoration: none;
  color: var(--text);
  transition: transform 0.15s ease, border-color 0.15s ease;
}
.tile:hover { transform: translateY(-3px); border-color: var(--accent); }
.tile-icon { font-size: 1.8rem; }
.tile-title { font-size: 1.1rem; font-weight: 600; }
.tile-desc { color: var(--text-dim); font-size: 0.85rem; }

.login-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; }

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2.5rem;
  width: 320px;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.login-card h1 { margin: 0; text-align: center; font-size: 1.4rem; }
.subtitle { margin: 0; text-align: center; color: var(--text-dim); font-size: 0.9rem; }

.login-card label { display: flex; flex-direction: column; gap: 0.4rem; font-size: 0.85rem; color: var(--text-dim); }
.login-card input {
  background: #0f1420;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.6rem 0.75rem;
  color: var(--text);
  font-size: 0.95rem;
}
.login-card input:focus { outline: 2px solid var(--accent); }

.login-card button {
  background: var(--accent);
  border: none;
  border-radius: 8px;
  padding: 0.7rem;
  color: white;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  margin-top: 0.5rem;
}
.login-card button:hover { filter: brightness(1.1); }

.error {
  background: rgba(231, 76, 60, 0.12);
  border: 1px solid rgba(231, 76, 60, 0.4);
  color: #f28b7f;
  padding: 0.6rem 0.75rem;
  border-radius: 8px;
  font-size: 0.85rem;
  text-align: center;
}