/* ====== 全局 ====== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
    background: #f0f2f5;
    color: #333;
    min-height: 100vh;
}

a {
    color: #4a6cf7;
    text-decoration: none;
}

.hidden { display: none !important; }

/* ====== 登录页 ====== */
.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-box {
    background: #fff;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.15);
    width: 380px;
    max-width: 90%;
}

.login-box h2 {
    text-align: center;
    margin-bottom: 8px;
    color: #1a1a2e;
}

.login-sub {
    text-align: center;
    color: #999;
    margin-bottom: 24px;
    font-size: 14px;
}

/* ====== 表单 ====== */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 14px;
    color: #555;
    font-weight: 500;
}

input[type="text"],
input[type="password"],
.auth-input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.2s;
}

input:focus,
.auth-input:focus {
    outline: none;
    border-color: #4a6cf7;
}

/* ====== 按钮 ====== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 16px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s;
}

.btn-primary {
    background: #4a6cf7;
    color: #fff;
}

.btn-primary:hover {
    background: #3b5de7;
}

.btn-outline {
    background: transparent;
    border: 1px solid #ddd;
    color: #555;
}

.btn-outline:hover {
    border-color: #4a6cf7;
    color: #4a6cf7;
}

.btn-sm {
    padding: 5px 12px;
    font-size: 13px;
}

.btn-block {
    display: block;
    width: 100%;
    padding: 12px;
    font-size: 15px;
}

.btn-warn {
    background: #ff9800 !important;
    color: #fff !important;
    border-color: #ff9800 !important;
}

.alert {
    padding: 10px 14px;
    border-radius: 6px;
    margin-bottom: 16px;
    font-size: 14px;
}

.alert-error {
    background: #fff2f0;
    border: 1px solid #ffccc7;
    color: #ff4d4f;
}

/* ====== 导航栏 ====== */
.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    height: 56px;
    background: #fff;
    border-bottom: 1px solid #e8e8e8;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar h1 {
    font-size: 18px;
    color: #1a1a2e;
}

.nav-center { flex: 1; display: flex; justify-content: center; }

.nav-right { display: flex; gap: 8px; }

/* ====== 平台状态条 ====== */
.platform-status-bar {
    display: flex;
    gap: 24px;
}

.status-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: #666;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

.status-dot.online { background: #52c41a; box-shadow: 0 0 6px #52c41a; }
.status-dot.offline { background: #d9d9d9; }
.status-dot.connecting { background: #faad14; animation: pulse 1s infinite; }

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* ====== 布局 ====== */
.container {
    display: flex;
    height: calc(100vh - 56px);
}

.sidebar {
    width: 220px;
    background: #fff;
    border-right: 1px solid #e8e8e8;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

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

/* ====== 筛选 ====== */
.filter-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.filter-btn {
    padding: 8px 12px;
    border: none;
    background: transparent;
    text-align: left;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    color: #555;
    transition: all 0.15s;
}

.filter-btn:hover { background: #f5f5f5; }
.filter-btn.active { background: #e6f0ff; color: #4a6cf7; font-weight: 500; }

.search-box input {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid #e8e8e8;
    border-radius: 6px;
    font-size: 13px;
}

.actions {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

/* ====== 消息头 ====== */
.msg-header {
    padding: 12px 20px;
    background: #fff;
    border-bottom: 1px solid #e8e8e8;
    display: flex;
    gap: 16px;
    align-items: center;
    font-size: 13px;
    color: #888;
}

.badge {
    background: #4a6cf7;
    color: #fff;
    padding: 2px 10px;
    border-radius: 10px;
    font-size: 12px;
}

/* ====== 消息列表 ====== */
.msg-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px 20px;
}

.msg-item {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 6px;
    cursor: pointer;
    transition: background 0.15s;
    border: 1px solid transparent;
}

.msg-item:hover { background: #f9f9fb; }
.msg-item.unread { background: #f0f5ff; border-color: #d6e4ff; }

.msg-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    font-size: 13px;
    margin-bottom: 4px;
}

.platform-tag {
    padding: 1px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 500;
    text-transform: uppercase;
}

.platform-telegram { background: #e6f0ff; color: #4a6cf7; }
.platform-signal { background: #e6f6ff; color: #2f8cff; }
.platform-whatsapp { background: #e6ffe6; color: #25d366; }

.msg-sender { font-weight: 600; color: #333; }
.msg-chat { color: #888; font-size: 12px; }
.msg-type {
    padding: 0 6px;
    border-radius: 3px;
    font-size: 11px;
    background: #f5f5f5;
    color: #999;
}
.type-image { background: #fff7e6; color: #fa8c16; }
.type-file { background: #f6ffed; color: #52c41a; }
.type-sticker { background: #fff0f6; color: #eb2f96; }
.type-voice { background: #f0f5ff; color: #2f54eb; }

.msg-time { color: #bbb; font-size: 12px; margin-left: auto; }

.unread-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #4a6cf7;
}

.msg-content {
    color: #555;
    font-size: 14px;
    line-height: 1.5;
    word-break: break-all;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #bbb;
    font-size: 15px;
}

.pagination {
    padding: 12px 20px;
    text-align: center;
}

/* ====== 认证中心 ====== */
.auth-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 20px;
    padding: 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.auth-card {
    background: #fff;
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.auth-card h3 {
    font-size: 16px;
    margin-bottom: 12px;
    color: #1a1a2e;
}

.auth-status {
    font-size: 13px;
    padding: 6px 0;
    margin-bottom: 12px;
}

.status-online { color: #52c41a; }
.status-offline { color: #bbb; }
.status-connecting { color: #faad14; }

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

.auth-hint {
    font-size: 13px;
    color: #888;
    margin-bottom: 8px;
    line-height: 1.6;
}

.auth-input {
    margin-bottom: 10px;
}

.qr-container {
    display: flex;
    justify-content: center;
    padding: 16px;
    background: #fff;
    border-radius: 8px;
    border: 1px solid #e8e8e8;
    margin-bottom: 12px;
}

.qr-container canvas,
.qr-container img {
    display: block;
}

/* ====== 响应式 ====== */
@media (max-width: 768px) {
    .container { flex-direction: column; }
    .sidebar { width: 100%; flex-direction: row; flex-wrap: wrap; }
    .auth-grid { grid-template-columns: 1fr; }
}