:root {
  --bg: #0b1220;
  --bg-2: #111827;
  --panel: rgba(17, 24, 39, 0.94);
  --panel-2: #1f2937;
  --panel-3: #0f172a;
  --border: #2f3d52;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --secondary: #374151;
  --secondary-hover: #4b5563;
  --success: #16a34a;
  --success-hover: #15803d;
  --chip: #0b1220;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.22);
  --radius: 16px;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
  color: var(--text);
  font-family: Inter, Arial, sans-serif;
}

body {
  min-height: 100vh;
}

.app-shell {
  width: 100%;
}

.topbar {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 20px 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.topbar h1 {
  margin: 0;
  font-size: 2rem;
  line-height: 1.2;
}

.subtitle {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.auth-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px 20px 40px;
}

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

.auth-message {
  padding: 28px 20px;
  text-align: center;
}

.auth-message h2 {
  margin-top: 0;
}

.auth-message p {
  margin-bottom: 0;
  color: var(--muted);
}

.toolbar,
.compose {
  padding: 20px;
  margin-bottom: 20px;
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.toolbar h2,
.compose h2 {
  margin: 0 0 6px;
}

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

.toolbar-actions,
.compose-actions {
  display: flex;
  gap: 10px;
}

.compose-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 14px 0 12px;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 0.95rem;
  outline: none;
}

input::placeholder,
textarea::placeholder {
  color: #9ca3af;
}

textarea {
  min-height: 150px;
  resize: vertical;
}

.btn {
  border: none;
  border-radius: 12px;
  padding: 11px 16px;
  font-size: 0.95rem;
  cursor: pointer;
  transition: 0.2s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: white;
}

.btn-primary:hover {
  background: var(--primary-hover);
}

.btn-secondary {
  background: var(--secondary);
  color: white;
}

.btn-secondary:hover {
  background: var(--secondary-hover);
}

.btn-success {
  background: var(--success);
  color: white;
}

.btn-success:hover {
  background: var(--success-hover);
}

.email-list {
  display: grid;
  gap: 16px;
}

.email-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.email-main {
  padding: 18px;
}

.email-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 10px;
}

.email-subject {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0;
  line-height: 1.35;
  word-break: break-word;
}

.email-meta {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 6px;
  word-break: break-word;
}

.label-chip {
  flex-shrink: 0;
  background: var(--chip);
  border: 1px solid var(--border);
  color: #cbd5e1;
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 0.78rem;
  text-transform: capitalize;
}

.email-body details {
  background: var(--panel-3);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  margin-top: 12px;
}

.email-body summary {
  cursor: pointer;
  color: #cbd5e1;
  font-weight: 600;
  list-style: none;
}

.email-body summary::-webkit-details-marker {
  display: none;
}

.email-body p {
  margin: 12px 0 0;
  color: #d1d5db;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 0.92rem;
}

.reply-box {
  margin-top: 14px;
}

.reply-box textarea {
  min-height: 120px;
}

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

.reply-actions .btn {
  min-width: 140px;
}

.status {
  margin-bottom: 16px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--panel-3);
  color: #cbd5e1;
  line-height: 1.45;
}

.hidden {
  display: none !important;
}

.loading-card {
  padding: 18px;
  text-align: center;
  color: var(--muted);
}

@media (max-width: 768px) {
  .topbar {
    flex-direction: column;
    align-items: stretch;
  }

  .toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .compose-grid {
    grid-template-columns: 1fr;
  }

  .email-top {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .reply-actions,
  .toolbar-actions,
  .compose-actions,
  .auth-actions {
    flex-direction: column;
  }

  .reply-actions .btn,
  .btn {
    width: 100%;
    min-width: unset;
  }

  .email-main {
    padding: 14px;
  }

  .email-subject {
    font-size: 0.98rem;
  }

  .email-meta {
    font-size: 0.85rem;
  }

  .container {
    padding: 14px 14px 32px;
  }

  .toolbar,
  .compose {
    padding: 16px;
  }
}