/* Delphi dashboard. Same family as Alexandria / Pergamum / Lyceum, with a violet accent. */

:root {
  --bg: #1e2229;
  --bg-elevated: #252b33;
  --bg-card: #1a1f26;
  --border: #2e3540;
  --border-hover: #3d4b5c;
  --accent: #a78bfa;
  --accent-hover: #c4b5fd;
  --accent-dim: rgba(167, 139, 250, 0.15);
  --text: #f1f8f0;
  --text-muted: #7a8899;
  --text-dim: #4a5568;
  --red: #e05252;
  --yellow: #f0c040;
  --green: #4caf82;
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 14px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.5);
  --font-display: 'Josefin Sans', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --header-h: 56px;
  color-scheme: dark;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ── HEADER ─────────────────────────────── */
.header {
  position: sticky;
  top: 0;
  z-index: 10;
  height: var(--header-h);
  background: #1b2128;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  /* Line the header up with the page content below (max 1200px wide, centred). */
  padding: 0 max(56px, calc((100% - 1200px) / 2 + 56px));
}

.logo {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--accent);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

.range-toggle {
  display: flex;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 2px;
}

.range-btn {
  padding: 4px 12px;
  border-radius: 4px;
  color: var(--text-muted);
  font-weight: 500;
  transition: color 0.2s, background 0.2s;
}

.range-btn:hover {
  color: var(--text);
}

.range-btn.active {
  background: var(--accent-dim);
  color: var(--accent);
}

.sign-out {
  color: var(--text-muted);
  transition: color 0.2s;
}

.sign-out:hover {
  color: var(--text);
}

/* ── PAGE ───────────────────────────────── */
.page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 56px 56px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.banner {
  background: rgba(240, 192, 64, 0.12);
  border: 1px solid var(--yellow);
  border-radius: var(--radius);
  color: var(--yellow);
  font-weight: 500;
  padding: 12px 16px;
}

.last-seen {
  color: var(--text-muted);
}

/* ── LATEST READINGS ────────────────────── */
.tiles {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.tile {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  padding: 16px 20px;
}

.tile-label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-muted);
}

.tile-value {
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 700;
  line-height: 1.3;
  margin-top: 6px;
}

.tile-unit {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  margin-left: 4px;
}

.tile-note {
  font-size: 12px;
  font-weight: 600;
  margin-top: 2px;
}

.tile--good .tile-value,
.tile--good .tile-note {
  color: var(--green);
}

.tile--fair .tile-value,
.tile--fair .tile-note {
  color: var(--yellow);
}

.tile--poor {
  border-color: var(--red);
}

.tile--poor .tile-value,
.tile--poor .tile-note {
  color: var(--red);
}

/* ── CHARTS ─────────────────────────────── */
.charts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.chart-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  padding: 20px;
  min-width: 0; /* lets the chart shrink inside the grid */
}

.chart-card--wide {
  grid-column: 1 / -1;
}

.chart-card-title {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.01em;
  margin-bottom: 12px;
}

.chart-card-unit {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  margin-left: 4px;
}

.chart-card-body {
  position: relative;
  height: 220px;
}

.chart-card--wide .chart-card-body {
  height: 260px;
}

/* ── LOGIN ──────────────────────────────── */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-wrap {
  width: 100%;
  max-width: 380px;
  padding: 0 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
}

.login-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.login-title {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--accent);
}

.login-subtitle {
  color: var(--text-muted);
}

.login-card {
  width: 100%;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.login-card-label {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-dim);
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.login-input {
  height: 40px;
  width: 100%;
  background: var(--bg);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 14px;
  padding: 0 14px;
  outline: none;
  transition: border-color 0.2s;
}

.login-input:focus {
  border-color: var(--accent);
}

.login-input--error {
  border-color: var(--red);
}

.login-error {
  font-size: 12px;
  font-weight: 500;
  color: var(--red);
}

.login-btn {
  height: 40px;
  background: var(--accent);
  color: #1a1f26;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: background 0.2s;
}

.login-btn:hover {
  background: var(--accent-hover);
}

/* ── SMALLER SCREENS ────────────────────── */
@media (max-width: 1000px) {
  .tiles {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 720px) {
  .header,
  .page {
    padding-left: 16px;
    padding-right: 16px;
  }

  .header-actions {
    gap: 12px;
  }

  .tiles {
    grid-template-columns: repeat(2, 1fr);
  }

  .charts {
    grid-template-columns: 1fr;
  }
}