:root {
  color-scheme: light;
  --bg-top: #f6f9fc;
  --bg-bottom: #d9e9ff;
  --panel: #ffffff;
  --text: #13233a;
  --muted: #4f617b;
  --accent: #0458d0;
  --accent-dark: #03409a;
  --danger: #bf202b;
  --danger-dark: #8f1620;
  --border: #d3dceb;
  --shadow: 0 10px 30px rgba(14, 33, 68, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text);
  background: linear-gradient(160deg, var(--bg-top), var(--bg-bottom));
}

.app {
  width: min(980px, 92vw);
  margin: 32px auto;
  display: grid;
  gap: 18px;
}

.hero {
  background: linear-gradient(135deg, #0f2d59, #0458d0);
  color: #fff;
  border-radius: 16px;
  padding: 26px 28px;
  box-shadow: var(--shadow);
}

.hero h1 {
  margin: 0 0 8px;
  font-size: 2rem;
}

.hero p {
  margin: 0;
  opacity: 0.9;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  box-shadow: var(--shadow);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.section-header h2 {
  margin: 0;
  font-size: 1.1rem;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 0.9rem;
  font-weight: 700;
}

.status::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.status.connected {
  background: #e8f7ee;
  color: #145f33;
}

.status.connected::before {
  background: #1d9147;
}

.status.disconnected {
  background: #fdecee;
  color: #88232a;
}

.status.disconnected::before {
  background: #c22f39;
}

.status-text {
  margin: 10px 0 0;
  color: var(--muted);
}

.runtime-info {
  margin: 8px 0 0;
  font-size: 0.82rem;
  color: #30507f;
  word-break: break-word;
}

.actions {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

button {
  border: none;
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  color: #fff;
  background: var(--accent);
  transition: transform 120ms ease, background 120ms ease;
}

button:hover:not(:disabled) {
  transform: translateY(-1px);
  background: var(--accent-dark);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

button.secondary {
  background: #276e3f;
}

button.secondary:hover:not(:disabled) {
  background: #1e5732;
}

button.danger {
  background: var(--danger);
}

button.danger:hover:not(:disabled) {
  background: var(--danger-dark);
}

.message {
  margin: 12px 0 0;
  min-height: 22px;
  font-size: 0.95rem;
}

.message.info {
  color: #294f8e;
}

.message.success {
  color: #1f6b3a;
}

.message.error {
  color: #9d1d26;
}

.email-list {
  display: grid;
  gap: 10px;
}

.empty {
  margin: 0;
  color: var(--muted);
}

.email-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  display: grid;
  gap: 8px;
}

.email-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.email-subject {
  margin: 0;
  font-size: 1rem;
}

.email-date {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
  text-align: right;
  min-width: 140px;
}

.email-meta {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.email-snippet {
  margin: 0;
  color: #1c2f49;
}

.email-card button {
  justify-self: start;
}

@media (max-width: 720px) {
  .app {
    width: min(980px, 95vw);
    margin: 20px auto;
  }

  .hero {
    padding: 20px;
  }

  .hero h1 {
    font-size: 1.6rem;
  }

  .email-top {
    flex-direction: column;
    gap: 4px;
  }

  .email-date {
    text-align: left;
    min-width: auto;
  }
}