:root {
  --bg: #0f172a;
  --card-bg: #ffffff;
  --text: #1e293b;
  --muted: #64748b;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --error-bg: #fef2f2;
  --error-text: #b91c1c;
  --border: #e2e8f0;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.login-card {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 2.5rem;
  width: 100%;
  max-width: 360px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
}

.login-card h1 {
  margin: 0 0 0.25rem;
  font-size: 1.4rem;
}

.subtitle {
  margin: 0 0 1.5rem;
  color: var(--muted);
  font-size: 0.9rem;
}

label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

input[type="text"],
input[type="password"] {
  width: 100%;
  padding: 0.6rem 0.75rem;
  margin-bottom: 1.1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
}

input[type="text"]:focus,
input[type="password"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

button[type="submit"] {
  width: 100%;
  padding: 0.7rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
}

button[type="submit"]:hover {
  background: var(--accent-hover);
}

.alert {
  padding: 0.6rem 0.75rem;
  border-radius: 8px;
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.alert-error {
  background: var(--error-bg);
  color: var(--error-text);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
  background: #ffffff;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

.link-btn {
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  font-size: 0.9rem;
  padding: 0;
}

.dashboard-wrap {
  padding: 1rem 1.5rem;
}

.looker-frame {
  width: 100%;
  height: 85vh;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.fallback {
  color: var(--muted);
  font-size: 0.85rem;
  margin-top: 0.75rem;
}