@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&family=Noto+Sans+SC:wght@300;400;500;600;700&display=swap');

:root {
  --primary: #1e293b;
  --primary-light: #334155;
  --accent: #c8a04a;
  --accent-light: #f0d98c;
  --accent-hover: #b8913e;
  --bg: #f7f6f3;
  --bg-warm: #f2f0eb;
  --card: #ffffff;
  --card-hover: #fefefe;
  --text: #2d2a26;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --border: #e8e6e1;
  --border-light: #f0eee9;
  --success: #22c55e;
  --success-bg: #f0fdf4;
  --warning: #f59e0b;
  --warning-bg: #fffbeb;
  --danger: #ef4444;
  --danger-bg: #fef2f2;
  --info: #3b82f6;
  --info-bg: #eff6ff;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.03);
  --shadow: 0 4px 16px rgba(0,0,0,0.06), 0 1px 4px rgba(0,0,0,0.04);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.04);
  --shadow-accent: 0 4px 14px rgba(200,160,74,0.25);
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Outfit', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; }

/* 覆盖 Pico.css 的侵入性样式 */
html { scroll-behavior: smooth; background: var(--bg); }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  margin: 0;
  padding: 0;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-size: 15px;
}

/* Pico.css 覆盖 */
table { margin: 0; }
input, select, textarea { margin: 0; }

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

/* ===== Navbar ===== */
.navbar {
  background: var(--primary);
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 4px 24px rgba(0,0,0,0.12);
}

.navbar::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light), var(--accent));
  opacity: 0.6;
}

.navbar .brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.3px;
}

.navbar .brand .iconfont { font-size: 1.5rem; color: var(--accent); }

.navbar nav {
  display: flex;
  align-items: center;
  gap: 0.2rem;
}

.navbar nav a {
  color: rgba(255,255,255,0.55);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  position: relative;
}

.navbar nav a:hover {
  color: #fff;
  background: rgba(255,255,255,0.08);
}

.navbar nav a.active {
  color: #fff;
  background: rgba(255,255,255,0.12);
}

.navbar nav a.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
}

.navbar .nav-right { display: flex; align-items: center; }

.btn-icon {
  background: transparent;
  border: none;
  color: rgba(255,255,255,0.55);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 1.05rem;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.btn-icon:hover { color: #fff; background: rgba(255,255,255,0.08); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
}

/* ===== Layout ===== */
.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 2rem 2rem 3rem;
}

.page-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--primary);
  margin: 0 0 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  letter-spacing: -0.01em;
}

.page-title .iconfont { color: var(--accent); font-size: 1.2em; }

/* ===== Cards ===== */
.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.75rem 2rem;
  margin-bottom: 1.25rem;
  transition: var(--transition);
  border: 1px solid var(--border-light);
}

.card:hover { box-shadow: var(--shadow-lg); }

.card-title {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 1.25rem;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1.3rem;
  border-radius: var(--radius-sm);
  border: none;
  font-size: 0.85rem;
  font-weight: 500;
  font-family: var(--font);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  line-height: 1.5;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: var(--primary);
}
.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: var(--shadow-accent);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--primary);
  color: #fff;
}
.btn-secondary:hover {
  background: var(--primary-light);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--border);
  color: var(--text-secondary);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(30,41,59,0.03);
}

.btn-danger {
  background: var(--danger);
  color: #fff;
}
.btn-danger:hover {
  background: #dc2626;
  box-shadow: 0 4px 14px rgba(239,68,68,0.3);
  transform: translateY(-1px);
}

.btn-success {
  background: var(--success);
  color: #fff;
}
.btn-success:hover {
  background: #16a34a;
  box-shadow: 0 4px 14px rgba(34,197,94,0.3);
  transform: translateY(-1px);
}

.btn-sm {
  padding: 0.4rem 0.8rem;
  font-size: 0.8rem;
  border-radius: 8px;
}

.btn-group { display: flex; gap: 0.5rem; flex-wrap: wrap; }

/* ===== Badges ===== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.7rem;
  border-radius: 20px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.3px;
  text-transform: uppercase;
}

.badge-pending { background: var(--info-bg); color: #2563eb; }
.badge-sent { background: var(--success-bg); color: #16a34a; }
.badge-failed { background: var(--danger-bg); color: #dc2626; }

/* ===== Forms ===== */
.form-group { margin-bottom: 1.25rem; }

.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.82rem;
  margin-bottom: 0.4rem;
  color: var(--text);
  letter-spacing: 0.01em;
}

.form-control {
  width: 100%;
  padding: 0.7rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  transition: var(--transition);
  background: #fff;
  color: var(--text);
  font-family: var(--font);
  outline: none;
}

.form-control:hover { border-color: #d1d0cc; }

.form-control:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(200,160,74,0.12);
  background: #fff;
}

textarea.form-control {
  min-height: 160px;
  resize: vertical;
  line-height: 1.6;
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2rem;
}

.form-check {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
}

.form-check input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
  cursor: pointer;
}

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

/* ===== Filter Tabs ===== */
.filter-tabs {
  display: flex;
  gap: 0.4rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  background: var(--bg-warm);
  padding: 0.35rem;
  border-radius: var(--radius-sm);
  width: fit-content;
}

.filter-tab {
  padding: 0.45rem 1.1rem;
  border-radius: 8px;
  border: none;
  background: transparent;
  font-size: 0.82rem;
  font-weight: 500;
  font-family: var(--font);
  cursor: pointer;
  transition: var(--transition);
  color: var(--text-muted);
}

.filter-tab:hover { color: var(--text); }

.filter-tab.active {
  background: #fff;
  color: var(--primary);
  box-shadow: var(--shadow-sm);
  font-weight: 600;
}

/* ===== Table (Desktop) ===== */
.email-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

.email-table thead th {
  text-align: left;
  padding: 0.85rem 1.15rem;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  border-bottom: 2px solid var(--border-light);
  background: var(--bg-warm);
}

.email-table thead th:first-child { border-radius: 10px 0 0 0; }
.email-table thead th:last-child { border-radius: 0 10px 0 0; }

.email-table tbody td {
  padding: 0.9rem 1.15rem;
  font-size: 0.88rem;
  border-bottom: 1px solid var(--border-light);
  vertical-align: middle;
  transition: var(--transition);
}

.email-table tbody tr { transition: var(--transition); }
.email-table tbody tr:hover { background: rgba(200,160,74,0.03); }
.email-table tbody tr:last-child td { border-bottom: none; }

.email-table .actions { display: flex; gap: 0.3rem; justify-content: flex-end; }

/* ===== Email Cards (Mobile) ===== */
.email-cards { display: none; }

.email-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 1.15rem 1.25rem;
  margin-bottom: 0.6rem;
  transition: var(--transition);
  border: 1px solid var(--border-light);
}

.email-card:hover { box-shadow: var(--shadow); }

.email-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.5rem;
}

.email-card-subject {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--primary);
  flex: 1;
  margin-right: 0.5rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.email-card-to { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 0.3rem; }

.email-card-time {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.email-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-light);
}

.email-card-actions { display: flex; gap: 0.3rem; }

/* ===== Login Page ===== */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  position: relative;
  overflow: hidden;
  padding: 1rem;
}

.login-page::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at 30% 20%, rgba(200,160,74,0.12) 0%, transparent 50%),
              radial-gradient(ellipse at 70% 80%, rgba(59,130,246,0.06) 0%, transparent 50%);
  animation: bgShift 20s ease-in-out infinite alternate;
}

@keyframes bgShift {
  0% { transform: translate(0, 0); }
  100% { transform: translate(-5%, -3%); }
}

.login-card {
  background: var(--card);
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.25);
  padding: 3rem 2.5rem 2.5rem;
  width: 100%;
  max-width: 420px;
  position: relative;
  z-index: 1;
}

.login-brand { text-align: center; margin-bottom: 2.25rem; }

.login-brand h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  margin: 0.6rem 0 0;
  letter-spacing: -0.02em;
}

.login-brand .logo-icon {
  font-size: 2.8rem;
  color: var(--accent);
  display: inline-block;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.login-brand p {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin: 0.35rem 0 0;
  font-weight: 400;
}

/* ===== Toast ===== */
.toast-container {
  position: fixed;
  top: 76px;
  right: 1.5rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-family: var(--font);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  animation: toastIn 0.35s cubic-bezier(0.21, 1.02, 0.73, 1);
  max-width: 380px;
  font-weight: 500;
}

.toast-success { background: var(--success); color: #fff; }
.toast-error { background: var(--danger); color: #fff; }
.toast-info { background: var(--info); color: #fff; }

@keyframes toastIn {
  from { transform: translateX(100%) scale(0.95); opacity: 0; }
  to { transform: translateX(0) scale(1); opacity: 1; }
}

/* ===== Empty State ===== */
.empty-state {
  text-align: center;
  padding: 3.5rem 1rem;
  color: var(--text-muted);
}

.empty-state .iconfont {
  font-size: 3.5rem;
  color: var(--border);
  margin-bottom: 1rem;
  display: block;
  opacity: 0.6;
}

.empty-state p { font-size: 0.95rem; margin: 0; }

/* ===== 2FA Section ===== */
.totp-setup {
  text-align: center;
  padding: 0.5rem;
}

.totp-setup .qr-wrapper {
  display: inline-block;
  padding: 1rem;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin: 1rem 0;
  border: 1px solid var(--border-light);
}

.totp-setup .secret-text {
  font-family: 'Courier New', monospace;
  background: var(--bg-warm);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-size: 0.85rem;
  word-break: break-all;
  display: inline-block;
  max-width: 100%;
  letter-spacing: 0.5px;
}

/* ===== Utilities ===== */
small { color: var(--text-muted); font-size: 0.8rem; }

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .navbar { padding: 0 1rem; }
  .navbar nav { display: none; }
  .navbar nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--primary);
    padding: 0.5rem;
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
    border-radius: 0 0 var(--radius) var(--radius);
    z-index: 99;
  }
  .navbar nav.open a { padding: 0.85rem 1.25rem; border-radius: 8px; }
  .nav-toggle { display: block; }

  .container { padding: 1.25rem 1rem 2rem; }

  .form-row { grid-template-columns: 1fr; }
  .email-table-wrap { display: none; }
  .email-cards { display: block; }
  .login-card { padding: 2rem 1.5rem; }
  .card { padding: 1.25rem; }
  .filter-tabs { width: 100%; }
}

@media (max-width: 375px) {
  .btn { padding: 0.5rem 0.85rem; font-size: 0.78rem; }
  .filter-tab { padding: 0.4rem 0.7rem; font-size: 0.75rem; }
}