:root {
  --bg: #f3f7fb;
  --ink: #0f172a;
  --muted: #5b677e;
  --line: #d6deea;
  --panel: #ffffff;
  --soft: #f7f9fc;
  --accent: #0b6bce;
  --accent-strong: #0857a8;
  --danger: #c4314b;
  --success: #0f8f76;
  --warn: #b07817;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: "Source Sans 3", "Segoe UI", sans-serif;
  background:
    radial-gradient(1200px 500px at -10% -20%, #d8f5f3 0%, transparent 62%),
    radial-gradient(980px 420px at 110% -20%, #dbe8fb 0%, transparent 60%),
    var(--bg);
}

h1,
h2,
h3,
h4 {
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
  margin: 0;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

label {
  display: grid;
  gap: 7px;
  font-weight: 600;
  font-size: 14px;
}

input,
select,
textarea,
button {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--line);
  font: inherit;
}

input,
select,
textarea {
  background: #fff;
  color: var(--ink);
  padding: 10px 12px;
}

button {
  padding: 10px 12px;
  border: 0;
  cursor: pointer;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: background 0.15s ease;
}

button:hover {
  background: var(--accent-strong);
}

button.ghost {
  width: auto;
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
  padding: 8px 12px;
}

button.danger {
  width: auto;
  background: var(--danger);
  padding: 8px 12px;
  font-size: 13px;
}

button.danger:hover {
  background: #aa2a40;
}

.topbar {
  max-width: 1240px;
  margin: 0 auto;
  padding: 18px 22px 6px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.brand-link {
  display: inline-flex;
}

.brand-mark {
  height: 42px;
  width: auto;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.signed-in {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
}

.grid {
  max-width: 1240px;
  margin: 0 auto;
  padding: 14px 22px 28px;
  display: grid;
  gap: 16px;
  grid-template-columns: minmax(290px, 360px) minmax(0, 1fr);
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px;
  box-shadow: 0 7px 20px rgba(15, 23, 42, 0.04);
}

.control-panel {
  align-self: start;
}

.stack {
  display: grid;
  gap: 10px;
}

.compact-list {
  gap: 8px;
  margin-bottom: 14px;
}

.panel {
  margin-bottom: 14px;
}

.subtle {
  color: var(--muted);
  font-size: 14px;
  margin: 3px 0;
}

.ok,
.error,
.warn {
  margin: 4px 0;
  font-size: 14px;
  font-weight: 600;
}

.ok {
  color: var(--success);
}

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

.warn {
  color: var(--warn);
}

.heading-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.help-menu {
  position: relative;
}

.help-menu summary {
  list-style: none;
  width: 24px;
  height: 24px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--accent);
  display: grid;
  place-items: center;
  cursor: pointer;
  font-size: 13px;
  font-weight: 700;
  user-select: none;
  background: #fff;
}

.help-menu summary::-webkit-details-marker {
  display: none;
}

.help-card {
  position: absolute;
  right: 0;
  top: 32px;
  z-index: 8;
  width: min(370px, 82vw);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 0 12px 26px rgba(15, 23, 42, 0.14);
  padding: 10px;
}

.domain-card {
  border: 1px solid var(--line);
  background: var(--soft);
  border-radius: 12px;
  padding: 10px;
}

.domain-title {
  margin: 0 0 2px;
}

.mask-list {
  display: grid;
  gap: 8px;
  margin-top: 8px;
}

.mask-item {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 9px;
  background: #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.mask-item.active {
  border-color: #95c4f4;
  background: #edf5ff;
}

.mask-link {
  color: var(--ink);
  font-weight: 600;
  overflow-wrap: anywhere;
}

.inline-form {
  margin: 0;
}

.messages {
  display: grid;
  gap: 10px;
}

.message {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  background: #fff;
}

.message-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 6px;
}

.message-title-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
}

.chip-sent {
  color: #0b6bce;
  background: #eaf3ff;
}

.chip-inbound {
  color: #0f8f76;
  background: #e8f8f3;
}

.message-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.action-link {
  list-style: none;
  cursor: pointer;
  color: var(--accent);
  font-weight: 600;
  font-size: 14px;
}

.action-link::-webkit-details-marker {
  display: none;
}

.reply-menu {
  position: relative;
}

.reply-form {
  position: absolute;
  right: 0;
  top: 26px;
  z-index: 9;
  width: min(360px, 80vw);
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  padding: 10px;
  box-shadow: 0 12px 26px rgba(15, 23, 42, 0.14);
}

.reply-form textarea {
  resize: vertical;
}

.message h4 {
  font-size: 17px;
}

.message p {
  margin: 5px 0;
}

pre {
  margin: 8px 0 0;
  white-space: pre-wrap;
  background: #f3f7fb;
  border: 1px solid #dbe4f2;
  border-radius: 10px;
  padding: 10px;
  font-size: 14px;
}

.mono {
  font-family: ui-monospace, Menlo, Monaco, Consolas, monospace;
  font-size: 13px;
}

.auth-shell {
  max-width: 1080px;
  margin: 0 auto;
  min-height: 100vh;
  padding: 24px;
  display: grid;
  grid-template-columns: 1.1fr minmax(300px, 430px);
  gap: 24px;
  align-items: center;
}

.auth-hero {
  padding: 14px;
}

.hero-title {
  margin-top: 16px;
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.1;
}

.hero-subtle {
  margin-top: 12px;
  max-width: 540px;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.45;
}

.auth-card h2 {
  margin-bottom: 2px;
}

.auth-foot {
  margin-top: 12px;
}

@media (max-width: 980px) {
  .grid {
    grid-template-columns: 1fr;
  }

  .auth-shell {
    grid-template-columns: 1fr;
    align-items: start;
    padding-top: 20px;
  }

  .auth-hero {
    padding: 0;
  }

  .topbar {
    flex-wrap: wrap;
  }
}