:root {
  --bg: #070b14;
  --bg-grid: rgba(56, 189, 248, 0.06);
  --panel: rgba(15, 23, 42, 0.72);
  --panel-border: rgba(56, 189, 248, 0.22);
  --panel-border-strong: rgba(56, 189, 248, 0.5);
  --text: #dbe7f3;
  --text-dim: #7e93ab;
  --accent: #38bdf8;
  --accent-2: #22d3ee;
  --accent-glow: rgba(56, 189, 248, 0.45);
  --danger: #f87171;
  --danger-bg: rgba(248, 113, 113, 0.12);
  --success: #34d399;
  --row-alt: rgba(56, 189, 248, 0.04);
}

* {
  box-sizing: border-box;
}

html {
  font-family: "Rajdhani", system-ui, sans-serif;
  font-size: 16px;
  color-scheme: dark;
}

body {
  margin: 0;
  min-height: 100vh;
  padding: 2.5rem 1.25rem 4rem;
  color: var(--text);
  background-color: var(--bg);
  background-image:
    radial-gradient(
      ellipse 80% 60% at 50% -10%,
      rgba(56, 189, 248, 0.18),
      transparent 60%
    ),
    linear-gradient(var(--bg-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--bg-grid) 1px, transparent 1px);
  background-size:
    100% 100%,
    44px 44px,
    44px 44px;
  background-attachment: fixed;
  display: flex;
  flex-direction: column;
  align-items: center;
}

h1 {
  font-family: "Orbitron", sans-serif;
  font-weight: 900;
  font-size: clamp(1.5rem, 4vw, 2.4rem);
  letter-spacing: 0.04em;
  text-align: center;
  margin: 0 0 1.75rem;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 0 28px var(--accent-glow);
}

h2 {
  font-family: "Orbitron", sans-serif;
  font-size: 1.05rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.75rem;
}

a {
  color: var(--accent-2);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s ease;
}

a:hover {
  border-bottom-color: var(--accent-2);
}

body > h1,
#anonymous,
#oauth-status,
#authed {
  width: 100%;
  max-width: 760px;
}

/* Panels ----------------------------------------------------------- */
#anonymous,
#required-info,
#preferences,
#ledger,
#welcome {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 14px;
  padding: 1.25rem 1.4rem;
  backdrop-filter: blur(10px);
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.3),
    0 18px 48px rgba(0, 0, 0, 0.45);
}

#anonymous p {
  margin-top: 0;
}

/* Buttons ---------------------------------------------------------- */
button {
  font-family: "Rajdhani", sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  color: #04121f;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  border: none;
  border-radius: 8px;
  padding: 0.55rem 1.1rem;
  cursor: pointer;
  transition:
    transform 0.12s ease,
    box-shadow 0.2s ease,
    filter 0.2s ease;
  box-shadow: 0 6px 18px var(--accent-glow);
}

button:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 8px 26px var(--accent-glow);
  filter: brightness(1.08);
}

button:active:not(:disabled) {
  transform: translateY(0);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
}

/* Required info ---------------------------------------------------- */
#required-info > div:not(:first-child):not(#profile-warning) {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.4rem 0;
  border-bottom: 1px solid rgba(56, 189, 248, 0.08);
}

#required-info > div b {
  color: var(--text-dim);
  font-weight: 600;
}

/* Tables ----------------------------------------------------------- */
#preferences table,
#ledger table {
  border-collapse: collapse;
  width: 100%;
  min-width: 16rem;
}

#preferences thead th,
#ledger thead th {
  text-align: left;
  padding: 0.5rem 0.75rem;
  border-bottom: 2px solid var(--panel-border-strong);
  font-family: "Orbitron", sans-serif;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
}

#preferences tbody tr:nth-child(even),
#ledger tbody tr:nth-child(even) {
  background: var(--row-alt);
}

#preferences tbody td,
#ledger tbody td {
  padding: 0.45rem 0.75rem;
  border-bottom: 1px solid rgba(56, 189, 248, 0.1);
}

#preferences tbody tr:hover:not([data-separator]),
#ledger tbody tr:hover {
  background: rgba(56, 189, 248, 0.1);
}

#preferences thead th:not(:first-child) {
  text-align: center;
  width: 2.5rem;
}

#preferences tbody td:not(:first-child) {
  text-align: center;
  width: 2.5rem;
}

#ledger td.uec {
  text-align: right;
  font-variant-numeric: tabular-nums;
  color: var(--accent-2);
  font-weight: 600;
}

#ledger .empty {
  margin: 0.25rem 0 0;
  font-size: 0.9rem;
  color: var(--text-dim);
}

input[type="checkbox"] {
  width: 1.05rem;
  height: 1.05rem;
  accent-color: var(--accent);
  cursor: pointer;
}

/* Status & warnings ------------------------------------------------ */
#oauth-status {
  font-size: 0.9rem;
}

#profile-warning {
  margin-top: 0.75rem;
  padding: 0.7rem 1rem;
  background: var(--danger-bg);
  border: 1px solid var(--danger);
  border-radius: 8px;
  color: var(--danger);
  font-weight: 700;
}

/* Welcome ---------------------------------------------------------- */
#welcome {
  display: flex;
  align-items: center;
  gap: 1rem;
}

#welcome-avatar {
  width: 3.25rem;
  height: 3.25rem;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--accent);
  box-shadow: 0 0 18px var(--accent-glow);
}

#welcome-text {
  font-family: "Orbitron", sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

/* Tables can scroll horizontally if they ever overflow ------------- */
#preferences,
#ledger {
  overflow-x: auto;
}

/* ================================================================= */
/* Responsive — tablet                                               */
/* ================================================================= */
@media (max-width: 640px) {
  body {
    padding: 1.5rem 0.85rem 3rem;
  }

  #anonymous,
  #required-info,
  #preferences,
  #ledger,
  #welcome {
    padding: 1rem 1.1rem;
    border-radius: 12px;
  }

  #welcome {
    gap: 0.75rem;
  }

  #welcome-avatar {
    width: 2.75rem;
    height: 2.75rem;
  }

  #welcome-text {
    font-size: 1.05rem;
  }

  /* Stack required-info rows so long values don't get squeezed */
  #required-info > div:not(:first-child):not(#profile-warning) {
    flex-direction: column;
    gap: 0.1rem;
    word-break: break-word;
  }

  button {
    width: 100%;
  }

  #preferences thead th:first-child,
  #preferences tbody td:first-child {
    white-space: normal;
  }
}

/* ================================================================= */
/* Responsive — phone: turn the ledger into stacked cards            */
/* ================================================================= */
@media (max-width: 520px) {
  #ledger {
    overflow-x: visible;
  }

  #ledger table,
  #ledger thead,
  #ledger tbody,
  #ledger tr,
  #ledger td {
    display: block;
    width: 100%;
  }

  /* Hide the table header row; labels come from data-label instead */
  #ledger thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
  }

  #ledger tbody tr {
    margin-bottom: 0.85rem;
    border: 1px solid var(--panel-border);
    border-radius: 10px;
    padding: 0.35rem 0.6rem;
    background: var(--row-alt);
  }

  #ledger tbody tr:nth-child(even) {
    background: rgba(56, 189, 248, 0.08);
  }

  #ledger tbody td {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 1rem;
    padding: 0.4rem 0.25rem;
    border-bottom: 1px solid rgba(56, 189, 248, 0.1);
    text-align: right;
    word-break: break-word;
  }

  #ledger tbody tr td:last-child {
    border-bottom: none;
  }

  #ledger tbody td::before {
    content: attr(data-label);
    font-family: "Orbitron", sans-serif;
    font-size: 0.62rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--accent);
    text-align: left;
    flex-shrink: 0;
  }

  #ledger td.uec {
    text-align: right;
  }
}