/* ========== X-Files 全局样式 ========== */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --bg-primary: #0f1117;
    --bg-secondary: #1a1d27;
    --bg-tertiary: #242836;
    --bg-hover: #2d3245;
    --border: #33384a;
    --text-primary: #e4e6ef;
    --text-secondary: #8b8fa3;
    --text-muted: #5c6078;
    --accent: #4f7cff;
    --accent-hover: #3a66e8;
    --danger: #ff5c5c;
    --danger-hover: #e84444;
    --success: #4ade80;
    --warning: #fbbf24;
    --radius: 8px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
}

/* ========== 登录页 ========== */
.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0f1117 0%, #1a1d27 50%, #0f1117 100%);
}

.login-container {
    width: 380px;
    padding: 40px 36px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

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

.logo-icon {
    width: 64px; height: 64px;
    margin: 0 auto 16px;
    background: linear-gradient(135deg, var(--accent), #7c4fff);
    border-radius: 16px;
    display: flex; align-items: center; justify-content: center;
    font-size: 32px; font-weight: 800; color: #fff;
    box-shadow: 0 8px 24px rgba(79,124,255,0.4);
}

.login-logo h1 {
    font-size: 28px; font-weight: 700;
    background: linear-gradient(90deg, #4f7cff, #7c4fff);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-subtitle { color: var(--text-secondary); font-size: 14px; margin-top: 6px; }

.login-form { display: flex; flex-direction: column; gap: 16px; }

.input-group { position: relative; }

.input-group input {
    width: 100%;
    padding: 14px 48px 14px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 15px;
    outline: none;
    transition: border-color 0.2s;
}

.input-group input:focus { border-color: var(--accent); }

.toggle-pwd {
    position: absolute; right: 8px; top: 50%;
    transform: translateY(-50%);
    background: none; border: none; cursor: pointer;
    font-size: 18px; padding: 8px; opacity: 0.6;
}
.toggle-pwd:hover { opacity: 1; }

.login-btn {
    padding: 14px;
    background: linear-gradient(135deg, var(--accent), #6c5ce7);
    border: none; border-radius: var(--radius);
    color: #fff; font-size: 16px; font-weight: 600;
    cursor: pointer; transition: opacity 0.2s, transform 0.1s;
}
.login-btn:hover { opacity: 0.9; }
.login-btn:active { transform: scale(0.98); }
.login-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.login-error {
    color: var(--danger); font-size: 13px;
    text-align: center; min-height: 18px;
    transition: opacity 0.3s;
}

.login-footer {
    margin-top: 24px; text-align: center;
    color: var(--text-muted); font-size: 12px;
}

/* ========== 文件列表页 ========== */
.app-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 14px 24px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    position: sticky; top: 0; z-index: 100;
}

.header-left { display: flex; align-items: center; gap: 16px; }

.app-title {
    font-size: 20px; font-weight: 700;
    background: linear-gradient(90deg, #4f7cff, #7c4fff);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}

.breadcrumb {
    display: flex; align-items: center; gap: 4px;
    font-size: 14px; color: var(--text-secondary);
}

.breadcrumb a {
    color: var(--accent); text-decoration: none; cursor: pointer;
}
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb .sep { color: var(--text-muted); }

.header-right { display: flex; align-items: center; gap: 12px; }

.session-timer {
    font-size: 12px; color: var(--text-muted);
    padding: 4px 10px; background: var(--bg-tertiary);
    border-radius: 12px;
}

.btn {
    padding: 8px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 13px; font-weight: 500;
    cursor: pointer; transition: all 0.2s;
    display: inline-flex; align-items: center; gap: 6px;
}
.btn:hover { background: var(--bg-hover); border-color: var(--accent); }
.btn-primary {
    background: linear-gradient(135deg, var(--accent), #6c5ce7);
    border-color: transparent; color: #fff;
}
.btn-primary:hover { opacity: 0.9; border-color: transparent; }
.btn-danger { color: var(--danger); border-color: rgba(255,92,92,0.3); }
.btn-danger:hover { background: rgba(255,92,92,0.1); border-color: var(--danger); }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* 工具栏 */
.toolbar {
    display: flex; align-items: center; gap: 10px;
    padding: 12px 24px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
}

.toolbar-info {
    margin-left: auto; font-size: 13px; color: var(--text-secondary);
}

/* 文件列表 */
.file-list-container { padding: 0 24px 24px; }

.file-table {
    width: 100%; border-collapse: collapse;
    background: var(--bg-secondary);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
}

.file-table th {
    padding: 12px 16px;
    text-align: left;
    font-size: 12px; font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase; letter-spacing: 0.5px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border);
}

.file-table td {
    padding: 10px 16px;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}

.file-table tr:last-child td { border-bottom: none; }
.file-table tr:hover { background: var(--bg-hover); }

.file-name-cell {
    display: flex; align-items: center; gap: 10px;
    cursor: pointer;
}

.file-icon {
    width: 32px; height: 32px;
    display: flex; align-items: center; justify-content: center;
    font-size: 18px; border-radius: 6px;
    background: var(--bg-tertiary); flex-shrink: 0;
}
.file-icon.dir { background: rgba(79,124,255,0.15); }

.file-name { font-weight: 500; }
.file-name.renaming input {
    background: var(--bg-tertiary); border: 1px solid var(--accent);
    color: var(--text-primary); padding: 4px 8px;
    border-radius: 4px; font-size: 14px; width: 200px;
}

.file-size { color: var(--text-secondary); font-variant-numeric: tabular-nums; }
.file-date { color: var(--text-muted); font-size: 13px; }

.file-actions {
    display: flex; gap: 6px; opacity: 0;
    transition: opacity 0.2s;
}
.file-table tr:hover .file-actions { opacity: 1; }

.action-btn {
    background: none; border: none; cursor: pointer;
    padding: 4px 8px; border-radius: 4px;
    color: var(--text-secondary); font-size: 13px;
}
.action-btn:hover { background: var(--bg-tertiary); color: var(--text-primary); }
.action-btn.danger:hover { color: var(--danger); }

/* 复选框 */
input[type="checkbox"] {
    width: 16px; height: 16px;
    accent-color: var(--accent);
    cursor: pointer;
}

/* 空状态 */
.empty-state {
    text-align: center; padding: 60px 20px;
    color: var(--text-muted);
}
.empty-state .icon { font-size: 48px; margin-bottom: 12px; opacity: 0.5; }

/* ========== 上传面板 ========== */
.upload-panel {
    position: fixed; bottom: 0; right: 24px;
    width: 420px; max-height: 60vh;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px 12px 0 0;
    box-shadow: 0 -8px 32px rgba(0,0,0,0.4);
    z-index: 200;
    display: flex; flex-direction: column;
    transition: transform 0.3s;
}
.upload-panel.collapsed { transform: translateY(calc(100% - 44px)); }

.upload-panel-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 10px 16px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border);
    cursor: pointer; border-radius: 12px 12px 0 0;
}

.upload-panel-title { font-size: 14px; font-weight: 600; }
.upload-panel-count { font-size: 12px; color: var(--text-muted); }

.upload-list {
    overflow-y: auto; flex: 1; padding: 8px;
}

.upload-item {
    padding: 10px 12px; margin-bottom: 6px;
    background: var(--bg-tertiary);
    border-radius: 6px;
}

.upload-item-header {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 6px;
}

.upload-item-name {
    font-size: 13px; font-weight: 500;
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
    flex: 1; margin-right: 8px;
}

.upload-item-status {
    font-size: 11px; padding: 2px 8px; border-radius: 10px;
    flex-shrink: 0;
}
.upload-item-status.uploading { background: rgba(79,124,255,0.2); color: var(--accent); }
.upload-item-status.done { background: rgba(74,222,128,0.2); color: var(--success); }
.upload-item-status.error { background: rgba(255,92,92,0.2); color: var(--danger); }
.upload-item-status.paused { background: rgba(251,191,36,0.2); color: var(--warning); }

.upload-progress-bar {
    height: 4px; background: var(--bg-primary);
    border-radius: 2px; overflow: hidden;
}

.upload-progress-fill {
    height: 100%; background: linear-gradient(90deg, var(--accent), #7c4fff);
    border-radius: 2px; transition: width 0.3s;
}

.upload-item-info {
    display: flex; justify-content: space-between;
    font-size: 11px; color: var(--text-muted); margin-top: 4px;
}

/* ========== 模态框 ========== */
.modal-overlay {
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.6);
    display: flex; align-items: center; justify-content: center;
    z-index: 500;
}

.modal {
    width: 400px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

.modal h3 { font-size: 18px; margin-bottom: 16px; }
.modal p { font-size: 14px; color: var(--text-secondary); margin-bottom: 16px; }

.modal input {
    width: 100%; padding: 10px 14px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary); font-size: 14px;
    outline: none; margin-bottom: 16px;
}
.modal input:focus { border-color: var(--accent); }

.modal-actions {
    display: flex; justify-content: flex-end; gap: 10px;
}

/* Toast 通知 */
.toast-container {
    position: fixed; top: 70px; right: 24px;
    z-index: 1000; display: flex; flex-direction: column; gap: 8px;
}

.toast {
    padding: 12px 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.3);
    animation: slideIn 0.3s ease;
    display: flex; align-items: center; gap: 8px;
}
.toast.success { border-left: 3px solid var(--success); }
.toast.error { border-left: 3px solid var(--danger); }
.toast.info { border-left: 3px solid var(--accent); }

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

/* 滚动条 */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }