:root {
  --bg: #0f1c1a;
  --bg-2: #16302b;
  --panel: rgba(232, 241, 236, 0.06);
  --ink: #e8f1ec;
  --muted: #9bb5ab;
  --line: rgba(232, 241, 236, 0.14);
  --accent: #5fd0a5;
  --accent-2: #f0b429;
  --danger: #ff7a6b;
  --serif: "Instrument Serif", Georgia, serif;
  --sans: "DM Sans", system-ui, sans-serif;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--sans);
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(95, 208, 165, 0.18), transparent 60%),
    radial-gradient(900px 500px at 100% 0%, rgba(240, 180, 41, 0.12), transparent 55%),
    linear-gradient(160deg, var(--bg), var(--bg-2) 55%, #0b1412);
  background-attachment: fixed;
  padding-bottom: var(--safe-bottom);
}

a { color: var(--accent); text-decoration: none; }
button, .ghost, select, input {
  font: inherit;
  touch-action: manipulation;
}

.brand {
  font-family: var(--serif);
  font-size: 1.65rem;
  letter-spacing: 0.01em;
  margin: 0;
}

h1, h2 {
  font-family: var(--serif);
  font-weight: 400;
  margin: 0 0 0.35rem;
}

h1 { font-size: clamp(1.75rem, 5vw, 3rem); }
h2 { font-size: clamp(1.25rem, 3vw, 1.6rem); }

.lede {
  color: var(--muted);
  max-width: 38rem;
  line-height: 1.5;
  margin: 0;
}

/* Login */
.login-shell {
  min-height: 100dvh;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
}
.login-panel {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(1.5rem, 6vw, 5rem);
  padding-top: calc(clamp(1.5rem, 6vw, 5rem) + var(--safe-top));
  gap: 1rem;
}
.login-visual {
  background:
    linear-gradient(180deg, rgba(15, 28, 26, 0.25), rgba(15, 28, 26, 0.75)),
    repeating-linear-gradient(
      -12deg,
      transparent,
      transparent 18px,
      rgba(95, 208, 165, 0.06) 18px,
      rgba(95, 208, 165, 0.06) 19px
    ),
    radial-gradient(circle at 30% 40%, #1f5c4a, transparent 45%),
    radial-gradient(circle at 70% 70%, #7a5a12, transparent 40%),
    #10241f;
}
.login-form {
  display: grid;
  gap: 0.9rem;
  max-width: 22rem;
  width: 100%;
  margin-top: 0.5rem;
}
.login-form label,
.controls label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.85rem;
  color: var(--muted);
}
.login-form input,
.controls input,
.controls select {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--line);
  color: var(--ink);
  border-radius: 10px;
  padding: 0.8rem 0.9rem;
  min-height: 2.75rem;
  width: 100%;
  color-scheme: dark;
}
.login-form button,
.controls button,
#btn-fetch {
  background: var(--accent);
  color: #0b1412;
  border: 0;
  border-radius: 999px;
  padding: 0.85rem 1.2rem;
  min-height: 2.75rem;
  font-weight: 600;
  cursor: pointer;
  width: 100%;
}
.error {
  color: var(--danger);
  background: rgba(255, 122, 107, 0.1);
  border: 1px solid rgba(255, 122, 107, 0.35);
  padding: 0.65rem 0.85rem;
  border-radius: 10px;
  max-width: 22rem;
}

/* App */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  padding: calc(0.85rem + var(--safe-top)) clamp(0.85rem, 3vw, 2.5rem) 0.85rem;
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 5;
  background: rgba(15, 28, 26, 0.85);
}
.brand-lockup { display: flex; align-items: baseline; gap: 0.75rem; min-width: 0; }
.subtitle { color: var(--muted); font-size: 0.9rem; }
.topbar-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}
.user { color: var(--muted); font-size: 0.9rem; }
.ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.55rem 0.9rem;
  min-height: 2.5rem;
  cursor: pointer;
  width: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
}
.ghost:hover { border-color: var(--accent); color: var(--accent); }

.page {
  padding: 1.25rem clamp(0.85rem, 3vw, 2.5rem) 3rem;
  display: grid;
  gap: 1.25rem;
}

.hero-stats {
  display: grid;
  grid-template-columns: 1.2fr 1.4fr;
  gap: 1.25rem;
  align-items: end;
  padding: 0.25rem 0;
}
.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
  margin: 0;
}
.stat-grid > div {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.85rem 0.9rem;
  min-width: 0;
}
.stat-grid dt {
  color: var(--muted);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.stat-grid dd {
  margin: 0.35rem 0 0;
  font-family: var(--serif);
  font-size: clamp(1rem, 3.5vw, 1.35rem);
  overflow-wrap: anywhere;
  line-height: 1.25;
}

.controls {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0.75rem;
  align-items: end;
  padding: 1rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
}
.controls label { min-width: 0; }
.controls button {
  width: auto;
  justify-self: stretch;
}

.chart-block {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1rem 0.9rem 1.2rem;
}
.chart-head {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: baseline;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}
.meta { color: var(--muted); font-size: 0.85rem; margin: 0; }
.chart-wrap {
  position: relative;
  width: 100%;
  height: 280px;
}
.chart-wrap.compact { height: 220px; }

@media (max-width: 1100px) {
  .controls {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .controls button { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  .login-shell { grid-template-columns: 1fr; }
  .login-visual { min-height: 140px; order: -1; }
  .hero-stats { grid-template-columns: 1fr; }
  .subtitle { display: none; }
  .user { display: none; }
  .topbar-actions #btn-fetch { padding: 0.5rem 0.75rem; font-size: 0.9rem; }
}

@media (max-width: 640px) {
  .brand { font-size: 1.35rem; }
  .controls {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding: 0.85rem;
  }
  .controls button {
    grid-column: 1 / -1;
    width: 100%;
  }
  .chart-wrap { height: 240px; }
  .chart-wrap.compact { height: 190px; }
  .stat-grid dd { font-size: 0.98rem; }
  .lede { font-size: 0.95rem; }
  .page { gap: 1rem; }
  #btn-fetch.ghost { background: transparent; color: var(--ink); }
}

@media (max-width: 380px) {
  .stat-grid { grid-template-columns: 1fr; }
}