@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap");

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; tab-size: 4; }
body { line-height: 1.5; -webkit-font-smoothing: antialiased; }
img, svg, video { display: block; max-width: 100%; }
input, button, textarea, select { font: inherit; }

:root {
  --bg: #0d1117;
  --bg-card: #161b22;
  --bg-hover: #1c2128;
  --border: #30363d;
  --border-focus: #388bfd;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #484f58;
  --accent: #388bfd;
  --accent-hover: #58a6ff;
  --accent-dim: rgba(56, 139, 253, 0.12);
  --success: #3fb950;
  --success-dim: rgba(63, 185, 80, 0.12);
  --warning: #d29922;
  --warning-dim: rgba(210, 153, 34, 0.12);
  --danger: #f85149;
  --danger-hover: #ff7b72;
  --danger-dim: rgba(248, 81, 73, 0.12);
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.4), 0 1px 2px rgba(0, 0, 0, 0.24);
  --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.5);
}




html,
body {
  height: 100%;
  background: var(--bg);
  color: var(--text-primary);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

/* Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ── Card ── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow);
}

/* ── Button ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s ease;
  white-space: nowrap;
  font-family: inherit;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border);
}
.btn-ghost:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.btn-danger {
  background: var(--danger-dim);
  color: var(--danger);
  border-color: var(--danger);
}
.btn-danger:hover {
  background: var(--danger);
  color: #fff;
}

.btn-success {
  background: var(--success-dim);
  color: var(--success);
  border-color: var(--success);
}
.btn-success:hover {
  background: var(--success);
  color: #fff;
}

.btn-sm {
  padding: 4px 10px;
  font-size: 12px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ── Input ── */
.input {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 12px;
  color: var(--text-primary);
  font-size: 13px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.input::placeholder {
  color: var(--text-muted);
}

select.input {
  cursor: pointer;
}

/* ── Label ── */
.label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ── Form group ── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

@media (max-width: 600px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* ── Table ── */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

table {
  width: 100%;
  border-collapse: collapse;
}

thead {
  background: var(--bg-hover);
}

th {
  padding: 10px 16px;
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

td {
  padding: 12px 16px;
  font-size: 13px;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border);
}

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

tr:hover td {
  background: var(--bg-hover);
}

/* ── Badge ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
}

.badge-green {
  background: var(--success-dim);
  color: var(--success);
}

.badge-red {
  background: var(--danger-dim);
  color: var(--danger);
}

.badge-yellow {
  background: var(--warning-dim);
  color: var(--warning);
}

.badge-blue {
  background: var(--accent-dim);
  color: var(--accent-hover);
}

/* ── Stat Card ── */
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color 0.15s ease;
}

.stat-card:hover {
  border-color: var(--accent);
}

.stat-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
}

.stat-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 4px;
}

/* ── Sidebar ── */
.sidebar {
  width: 240px;
  min-height: 100vh;
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.sidebar-logo {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
}

.sidebar-logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--accent), #7c3aed);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.sidebar-logo-text {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
}

.sidebar-logo-sub {
  font-size: 11px;
  color: var(--text-secondary);
  line-height: 1.2;
}

.sidebar-nav {
  flex: 1;
  padding: 12px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-section {
  padding: 8px 12px 4px;
  font-size: 10px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 8px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  text-decoration: none;
}

.nav-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.nav-item.active {
  background: var(--accent-dim);
  color: var(--accent-hover);
}

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid var(--border);
}

.user-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #7c3aed);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}

.user-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
}

.user-role {
  font-size: 11px;
  color: var(--text-secondary);
}

/* ── Main Layout ── */
.app-layout {
  display: flex;
  min-height: 100vh;
}

.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  overflow: hidden;
}

/* When mail layout is inside main-content, let it fill */
.main-content > .mail-layout {
  flex: 1;
}

.page-header {
  padding: 24px 32px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.page-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
}

.page-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 2px;
}

.page-body {
  padding: 32px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* ── Stats Grid ── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

/* ── Modal ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 16px;
  animation: fadeIn 0.15s ease;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 480px;
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.2s ease;
}

.modal-header {
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.15s ease;
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-body {
  padding: 24px;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

/* ── Login ── */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  background-image: radial-gradient(ellipse at 50% 0%, rgba(56, 139, 253, 0.08) 0%, transparent 60%);
  padding: 16px;
}

.login-box {
  width: 100%;
  max-width: 400px;
}

.login-header {
  text-align: center;
  margin-bottom: 32px;
}

.login-logo {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, var(--accent), #7c3aed);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  box-shadow: 0 8px 24px rgba(56, 139, 253, 0.3);
}

.login-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
}

.login-sub {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 6px;
}

.error-msg {
  background: var(--danger-dim);
  border: 1px solid var(--danger);
  border-radius: var(--radius);
  padding: 10px 14px;
  color: var(--danger);
  font-size: 13px;
}

/* ── Search ── */
.search-bar {
  display: flex;
  align-items: center;
  gap: 10px;
}

.search-input-wrap {
  position: relative;
  flex: 1;
}

.search-icon {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.search-input {
  padding-left: 34px;
}

/* ── Empty state ── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  gap: 12px;
  color: var(--text-secondary);
}

.empty-icon {
  width: 48px;
  height: 48px;
  background: var(--bg-hover);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
}

/* ── Progress bar ── */
.progress-bar {
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
  flex: 1;
}

.progress-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.3s ease;
}

.progress-fill.danger {
  background: var(--danger);
}

/* ── Animations ── */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  flex-shrink: 0;
}

/* ══════════════════════════════════════════════════════════
   MAIL CLIENT — Gmail-style 3-column
   ══════════════════════════════════════════════════════════ */

.mail-layout {
  display: grid;
  grid-template-columns: 220px 360px 1fr;
  height: 100%;
  overflow: hidden;
}

/* ── Left: Folder Sidebar ── */
.mail-sidebar {
  background: var(--bg);
  border-right: 1px solid var(--border);
  padding: 16px 10px;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  gap: 6px;
}
.mail-sidebar .btn-primary {
  border-radius: 20px;
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 600;
  gap: 6px;
  box-shadow: 0 2px 8px rgba(88, 166, 255, 0.25);
}

.mail-account {
  margin-top: auto;
  padding: 12px 8px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.mail-account-email {
  font-size: 11px;
  color: var(--text-muted);
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Folders */
.folder-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-top: 4px;
}
.folder-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 20px;
  border: none;
  background: none;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-secondary);
  text-align: left;
  width: 100%;
  transition: all 0.15s ease;
  font-family: inherit;
}
.folder-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}
.folder-item.active {
  background: var(--accent-dim);
  color: var(--accent-hover);
  font-weight: 600;
}
.folder-icon { font-size: 15px; flex-shrink: 0; width: 20px; text-align: center; }
.folder-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.folder-badge {
  font-size: 10px;
  font-weight: 700;
  min-width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  padding: 0 6px;
  letter-spacing: 0.02em;
}

/* ── Center: Message List ── */
.mail-list {
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg);
}
.mail-list-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
}
.mail-list-header h2 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}
.message-list-inner {
  overflow-y: auto;
  flex: 1;
}
.message-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 20px;
  cursor: pointer;
  border-bottom: 1px solid rgba(48, 54, 61, 0.5);
  transition: all 0.12s ease;
  position: relative;
}
.message-row:hover {
  background: var(--bg-hover);
}
.message-row.selected {
  background: var(--accent-dim);
  border-left: 3px solid var(--accent);
  padding-left: 17px;
}
.message-row.unread::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}
.message-row.unread { padding-left: 22px; }
.message-row.unread.selected { padding-left: 19px; }
.message-row.unread .message-sender { font-weight: 700; color: var(--text-primary); }
.message-row.unread .message-subject { color: var(--text-secondary); font-weight: 500; }
.message-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-dim), var(--bg-hover));
  color: var(--accent-hover);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}
.message-content { flex: 1; min-width: 0; }
.message-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 3px;
  gap: 8px;
}
.message-sender {
  font-size: 13px;
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
}
.message-time {
  font-size: 11px;
  color: var(--text-muted);
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
}
.message-subject {
  font-size: 12px;
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  line-height: 1.5;
}
.message-attach {
  font-size: 13px;
  flex-shrink: 0;
  opacity: 0.6;
  margin-top: 2px;
}

/* ── Right: Message Detail ── */
.mail-detail {
  overflow-y: auto;
  background: var(--bg-card);
}
.message-view {
  padding: 28px 32px;
  max-width: 900px;
}
.message-view-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 24px;
  gap: 20px;
}
.message-view-subject {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.35;
  letter-spacing: -0.01em;
}
.message-view-actions { display: flex; gap: 8px; flex-shrink: 0; }
.message-view-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
}
.message-view-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-dim), var(--bg-hover));
  color: var(--accent-hover);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  flex-shrink: 0;
}
.message-attachments {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.attachment-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  border-radius: 8px;
  background: var(--bg-hover);
  border: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-secondary);
  transition: border-color 0.12s;
  cursor: pointer;
}
.attachment-chip:hover { border-color: var(--accent); color: var(--text-primary); }
.message-view-body {
  min-height: 200px;
  padding-top: 4px;
}

/* ── Empty state for mail ── */
.mail-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-muted);
  gap: 12px;
  padding: 40px;
}
.mail-empty-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--bg-hover);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 4px;
}

/* ── Attachment buttons ── */
.attachment-actions {
  display: inline-flex;
  gap: 4px;
  margin-left: auto;
}
.att-btn {
  background: none;
  border: 1px solid transparent;
  border-radius: 4px;
  cursor: pointer;
  font-size: 12px;
  padding: 2px 5px;
  transition: all 0.12s;
  color: var(--text-muted);
}
.att-btn:hover {
  border-color: var(--accent);
  color: var(--accent-hover);
  background: var(--accent-dim);
}

/* ── Compose dropzone ── */
.compose-dropzone {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  color: var(--text-muted);
  font-size: 12px;
  transition: all 0.15s;
}
.compose-dropzone:hover {
  border-color: var(--text-secondary);
  color: var(--text-secondary);
  background: var(--bg-hover);
}
.compose-dropzone.active {
  border-color: var(--accent);
  color: var(--accent-hover);
  background: var(--accent-dim);
}

.compose-attachments {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.compose-att-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  background: var(--bg-hover);
  border-radius: var(--radius);
  font-size: 12px;
  color: var(--text-secondary);
}
.att-remove {
  margin-left: auto;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 12px;
  padding: 2px 6px;
  border-radius: 4px;
  transition: all 0.12s;
}
.att-remove:hover {
  color: var(--danger);
  background: var(--danger-dim);
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .mail-layout { grid-template-columns: 60px 280px 1fr; }
  .mail-sidebar { padding: 12px 6px; }
  .mail-sidebar .btn-primary { font-size: 0; padding: 10px; justify-content: center; }
  .folder-name { display: none; }
  .folder-badge { display: none; }
  .folder-item { justify-content: center; padding: 8px; border-radius: 12px; }
  .mail-account-email { display: none; }
}

@media (max-width: 768px) {
  .sidebar { display: none; }
  .mail-layout { grid-template-columns: 1fr; }
  .mail-sidebar { display: none; }
  .mail-detail { display: none; }
  .page-body { padding: 16px; }
  .page-header { padding: 16px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
}