:root {
  color-scheme: dark;
  --bg: #0b1020;
  --panel: #111936;
  --panel-alt: #162245;
  --border: rgba(148, 163, 184, 0.18);
  --text: #ecf2ff;
  --muted: #97a3c0;
  --accent: #7dd3fc;
  --accent-strong: #38bdf8;
  --success: #34d399;
  --danger: #f87171;
  --shadow: 0 18px 50px rgba(4, 10, 24, 0.45);
  font-family: "SF Pro Display", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(56, 189, 248, 0.18), transparent 32%),
    radial-gradient(circle at top right, rgba(52, 211, 153, 0.12), transparent 24%),
    linear-gradient(180deg, #08101f 0%, var(--bg) 100%);
  color: var(--text);
}

.auth-shell,
.dashboard-shell {
  padding: 32px;
}

.auth-shell {
  display: grid;
  place-items: center;
}

.auth-card,
.panel,
.summary-card {
  background: linear-gradient(180deg, rgba(20, 31, 63, 0.92), rgba(12, 18, 37, 0.96));
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.auth-card {
  width: min(100%, 440px);
  border-radius: 24px;
  padding: 32px;
}

.auth-copy h1,
.topbar h1 {
  margin: 0;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
}

.auth-copy p,
.panel-header p,
.summary-label,
.viewer-email,
.status-message {
  color: var(--muted);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.auth-form {
  display: grid;
  gap: 16px;
  margin-top: 24px;
}

.auth-form label {
  display: grid;
  gap: 8px;
  font-size: 0.95rem;
}

input,
button {
  font: inherit;
}

input {
  width: 100%;
  border: 1px solid rgba(148, 163, 184, 0.24);
  background: rgba(8, 14, 29, 0.88);
  color: var(--text);
  border-radius: 14px;
  padding: 14px 16px;
}

input:focus {
  outline: 2px solid rgba(125, 211, 252, 0.45);
  outline-offset: 2px;
}

button {
  border: 0;
  border-radius: 14px;
  padding: 13px 18px;
  cursor: pointer;
}

#submit-button {
  background: linear-gradient(135deg, var(--accent-strong), #60a5fa);
  color: #041120;
  font-weight: 700;
}

.ghost-button {
  background: rgba(16, 24, 47, 0.85);
  border: 1px solid var(--border);
  color: var(--text);
}

.form-error {
  min-height: 1.25rem;
  margin: 0;
  color: var(--danger);
}

.auth-link-row {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.auth-link-row a {
  color: var(--accent);
  text-decoration: none;
}

.auth-link-row a:hover {
  text-decoration: underline;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 28px;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.dashboard-layout {
  display: grid;
  gap: 20px;
}

.summary-grid,
.chart-grid {
  display: grid;
  gap: 16px;
}

.summary-grid {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.summary-card {
  border-radius: 20px;
  padding: 20px;
}

.summary-card strong {
  display: block;
  margin-top: 10px;
  font-size: 2rem;
}

.chart-grid {
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.panel {
  border-radius: 22px;
  padding: 22px;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 16px;
  margin-bottom: 18px;
}

.panel-header h2 {
  margin: 0 0 6px;
  font-size: 1.1rem;
}

canvas {
  width: 100%;
  min-height: 280px;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 12px 10px;
  text-align: left;
  border-bottom: 1px solid rgba(148, 163, 184, 0.12);
  font-size: 0.92rem;
}

th {
  color: var(--muted);
  font-weight: 600;
  white-space: nowrap;
}

td {
  vertical-align: top;
}

.status-message {
  min-height: 1.2rem;
  margin: 0;
}

@media (max-width: 760px) {
  .auth-shell,
  .dashboard-shell {
    padding: 18px;
  }

  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .topbar-actions {
    width: 100%;
  }
}