:root {
  color-scheme: dark;
  --bg: #0a101b;
  --bg-2: #0f1a2d;
  --panel: rgba(10, 16, 27, 0.82);
  --panel-strong: rgba(14, 24, 41, 0.94);
  --line: rgba(153, 176, 208, 0.18);
  --text: #edf4ff;
  --muted: #9cb0ca;
  --accent: #8dd3ff;
  --accent-2: #66e0bf;
  --warning: #f2c66d;
  --danger: #ff8a99;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.45);
  --radius: 16px;
  --radius-sm: 12px;
  --mono: "SFMono-Regular", "Consolas", "Liberation Mono", "Menlo", monospace;
  --sans: "Segoe UI", "Aptos", "Helvetica Neue", Arial, sans-serif;
}

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

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  font-family: var(--sans);
  background:
    linear-gradient(180deg, rgba(12, 18, 31, 0.75), rgba(8, 12, 20, 0.96)),
    radial-gradient(circle at top left, rgba(102, 224, 191, 0.16), transparent 28%),
    radial-gradient(circle at 85% 10%, rgba(141, 211, 255, 0.14), transparent 26%),
    var(--bg);
  color: var(--text);
  letter-spacing: 0;
}

button,
input {
  font: inherit;
}

button {
  border: 0;
  cursor: pointer;
}

.backdrop {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.55), transparent 88%);
  opacity: 0.18;
}

.shell {
  width: min(1120px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 28px 0 40px;
  position: relative;
  z-index: 1;
}

.masthead {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 18px;
  align-items: center;
  margin-bottom: 20px;
}

.brand-mark {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  color: var(--accent);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(13, 22, 37, 0.9), rgba(10, 16, 27, 0.9));
  box-shadow: var(--shadow);
}

.brand-mark svg {
  width: 30px;
  height: 30px;
}

.eyebrow,
.panel-label,
.meta-label,
.hint,
.status-line {
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.eyebrow,
.panel-label,
.meta-label {
  color: var(--muted);
  font-size: 0.72rem;
  margin: 0 0 6px;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: clamp(1.75rem, 4vw, 2.8rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
}

.lede {
  margin-top: 8px;
  color: var(--muted);
  max-width: 54ch;
  line-height: 1.5;
}

.domain-pill {
  justify-self: end;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid rgba(141, 211, 255, 0.22);
  background: rgba(11, 17, 28, 0.82);
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.86rem;
  white-space: nowrap;
}

.grid {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(360px, 1.1fr);
  gap: 16px;
  align-items: start;
}

.panel {
  min-width: 0;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(14, 22, 36, 0.94), rgba(8, 13, 22, 0.94));
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
  padding: 20px;
}

.panel-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}

.panel h2 {
  font-size: 1.15rem;
  line-height: 1.25;
}

.state-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  font-size: 0.8rem;
  white-space: nowrap;
}

.state-badge.is-open {
  color: #c7fff1;
  border-color: rgba(102, 224, 191, 0.25);
  background: rgba(102, 224, 191, 0.08);
}

.state-badge.is-locked {
  color: #ffdba1;
  border-color: rgba(242, 198, 109, 0.2);
  background: rgba(242, 198, 109, 0.08);
}

.stack {
  display: grid;
  gap: 14px;
}

.field {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 0.92rem;
}

.field input {
  height: 50px;
  border-radius: 12px;
  border: 1px solid rgba(153, 176, 208, 0.2);
  background: rgba(7, 12, 20, 0.9);
  color: var(--text);
  padding: 0 14px;
  outline: none;
}

.field input:focus {
  border-color: rgba(141, 211, 255, 0.55);
  box-shadow: 0 0 0 3px rgba(141, 211, 255, 0.12);
}

.primary,
.ghost {
  height: 48px;
  border-radius: 12px;
  padding: 0 16px;
  font-weight: 600;
  transition:
    transform 120ms ease,
    border-color 120ms ease,
    background 120ms ease,
    color 120ms ease;
}

.primary {
  background: linear-gradient(180deg, #b0ecff, #7fdcf0);
  color: #08111c;
}

.ghost {
  color: var(--text);
  border: 1px solid rgba(153, 176, 208, 0.22);
  background: rgba(255, 255, 255, 0.03);
}

.primary:hover,
.ghost:hover {
  transform: translateY(-1px);
}

.primary:disabled,
.ghost:disabled {
  cursor: not-allowed;
  opacity: 0.48;
  transform: none;
}

.hint {
  color: var(--muted);
  font-size: 0.68rem;
  line-height: 1.45;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: end;
}

.mail-meta {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-bottom: 18px;
}

.mail-meta > div,
.mail-body {
  min-width: 0;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(153, 176, 208, 0.14);
  background: rgba(255, 255, 255, 0.02);
  padding: 14px;
}

.mail-meta strong {
  display: block;
  margin-top: 6px;
  font-size: 0.98rem;
  line-height: 1.35;
  word-break: break-word;
}

.mail-body {
  display: grid;
  gap: 8px;
}

.mail-body pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.55;
  color: #dbe7f8;
  font-family: var(--sans);
  min-height: 180px;
}

.status-line {
  margin-top: 16px;
  color: var(--muted);
  font-size: 0.68rem;
}

.status-line.is-error {
  color: var(--danger);
}

.status-line.is-warn {
  color: var(--warning);
}

@media (max-width: 860px) {
  .masthead,
  .grid {
    grid-template-columns: 1fr;
  }

  .domain-pill {
    justify-self: start;
  }

  .mail-meta {
    grid-template-columns: 1fr;
  }

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

  .button-row {
    justify-content: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation: none !important;
    transition: none !important;
  }
}