/* ===== 基础变量（深色默认） ===== */
:root {
    --bg: #0d1117;
    --surface: #161b22;
    --border: #30363d;
    --text: #e6edf3;
    --text-secondary: #8b949e;
    --accent: #58a6ff;
    --accent-hover: #79c0ff;
    --danger: #f85149;
    --success: #3fb950;
    --warning: #d2991d;
    --radius: 8px;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'SF Mono', 'Menlo', 'Monaco', 'Consolas', 'Ubuntu Mono', 'DejaVu Sans Mono', monospace;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', 'Helvetica Neue', Arial, sans-serif;
}

/* 浅色主题 */
:root[data-theme="light"] {
    --bg: #ffffff;
    --surface: #f6f8fa;
    --border: #d0d7de;
    --text: #1f2328;
    --text-secondary: #656d76;
    --accent: #0969da;
    --accent-hover: #0550b2;
    --danger: #cf222e;
    --success: #1a7f37;
    --warning: #9a6700;
    --terminal-bg: #f6f8fa;
}

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

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    -webkit-tap-highlight-color: transparent;
}

/* ===== 登录卡片 ===== */
.login-card {
    position: relative;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 32px 28px 24px;
    width: 100%;
    max-width: 440px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.15);
    animation: fadeIn 0.35s ease-out;
}
:root[data-theme="dark"] .login-card {
    box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}
.login-card .logo { text-align: center; margin-bottom: 8px; font-size: 40px; }
.login-card h1 { text-align: center; font-size: 22px; font-weight: 700; margin-bottom: 20px; }

/* 主题切换按钮（登录页） */
.theme-btn-login {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    transition: all 0.15s;
    z-index: 2;
}
.theme-btn-login:hover {
    background: var(--bg);
    border-color: var(--text-secondary);
}

/* 表单元素 */
.form-group { margin-bottom: 14px; }
.form-group label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 4px;
    text-transform: uppercase;
}
.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px 12px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-size: 14px;
    font-family: var(--font-mono);
    transition: border-color 0.2s, box-shadow 0.2s;
    user-select: text;
    -webkit-user-select: text;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(88,166,255,0.12);
}
.form-group textarea {
    resize: vertical;
    min-height: 80px;
    font-size: 12px;
    line-height: 1.5;
}
.form-row { display: flex; gap: 10px; }
.form-row .form-group { flex: 1; }
.form-row .form-group.port-group { flex: 0 0 90px; min-width: 70px; }

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    width: 100%;
    padding: 12px 20px;
    font-size: 15px;
    font-weight: 600;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.2s;
    letter-spacing: 0.01em;
    font-family: var(--font-sans);
}
.btn-primary { background: var(--accent); color: #fff; margin-top: 8px; }
.btn-primary:hover { background: var(--accent-hover); box-shadow: 0 4px 16px rgba(88,166,255,0.3); }
.btn-primary:active { transform: scale(0.97); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; box-shadow: none; transform: none; }

/* 错误提示 */
.error-banner {
    background: rgba(248,81,73,0.1);
    border: 1px solid rgba(248,81,73,0.35);
    border-radius: var(--radius);
    padding: 10px 14px;
    font-size: 13px;
    color: var(--danger);
    margin-bottom: 14px;
    display: none;
    word-break: break-word;
}
.error-banner.show { display: block; animation: shake 0.4s ease-out; }
@keyframes shake {
    0%,100% { transform: translateX(0); }
    20% { transform: translateX(-6px); }
    40% { transform: translateX(6px); }
    60% { transform: translateX(-4px); }
    80% { transform: translateX(4px); }
}

/* 认证切换 */
.toggle-section { margin-top: 4px; }
.toggle-link {
    font-size: 12px;
    color: var(--accent);
    cursor: pointer;
    background: none;
    border: none;
    font-family: var(--font-sans);
    text-decoration: none;
}
.toggle-link:hover { text-decoration: underline; color: var(--accent-hover); }
.key-section { display: none; }
.key-section.show { display: block; }

/* ===== 终端页面 ===== */
.terminal-page {
    position: fixed;
    inset: 0;
    display: flex;
    flex-direction: column;
    background: var(--bg);
}

/* 顶栏 */
.terminal-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 14px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    font-size: 13px;
    flex-shrink: 0;
    gap: 10px;
    flex-wrap: wrap;
}
.terminal-topbar .status { display: flex; align-items: center; gap: 7px; font-weight: 500; }
.status-dot {
    width: 9px; height: 9px;
    border-radius: 50%;
    background: var(--warning);
    flex-shrink: 0;
    animation: pulse 1.5s infinite;
}
.status-dot.connected { background: var(--success); animation: none; }
.status-dot.disconnected { background: var(--danger); animation: none; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.35; } }
.terminal-topbar .info {
    color: var(--text-secondary);
    font-size: 12px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.btn-sm {
    padding: 6px 14px;
    font-size: 12px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
    font-family: var(--font-sans);
    transition: all 0.15s;
    white-space: nowrap;
}
.btn-sm:hover { border-color: var(--text-secondary); }
.btn-sm.danger {
    border-color: rgba(248,81,73,0.4);
    color: var(--danger);
}
.btn-sm.danger:hover { background: rgba(248,81,73,0.1); }

/* ===== 辅助工具栏 ===== */
.toolbar {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 6px 10px;
    flex-shrink: 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}
.toolbar-row {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-wrap: nowrap;
    margin-bottom: 4px;
}
.tool-btn {
    padding: 4px 8px;
    font-size: 11px;
    font-weight: 600;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg);
    color: var(--text);
    cursor: pointer;
    white-space: nowrap;
    min-width: 36px;
    text-align: center;
    font-family: var(--font-sans);
    transition: all 0.1s;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
}
.tool-btn:active {
    transform: scale(0.95);
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}
.modifier.active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}
.tool-sep {
    width: 1px;
    height: 20px;
    background: var(--border);
    margin: 0 2px;
}

/* 命令输入行 */
.cmd-input-row {
    display: flex;
    align-items: center;
    gap: 4px;
}
.cmd-input {
    flex: 1;
    padding: 6px 10px;
    font-size: 13px;
    font-family: var(--font-mono);
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg);
    color: var(--text);
    outline: none;
    transition: border-color 0.2s;
}
.cmd-input:focus {
    border-color: var(--accent);
}
.cmd-send-btn {
    padding: 6px 12px;
    font-size: 12px;
    font-weight: 600;
    border: 1px solid var(--accent);
    border-radius: 4px;
    background: var(--accent);
    color: #fff;
    cursor: pointer;
    white-space: nowrap;
    flex-shrink: 0;
    transition: background 0.15s;
    font-family: var(--font-sans);
}
.cmd-send-btn:hover {
    background: var(--accent-hover);
}

/* ===== 终端容器 ===== */
.terminal-container {
    flex: 1;
    overflow: hidden;
    position: relative;
    background: #0a0a0a;
}
:root[data-theme="light"] .terminal-container {
    background: #f6f8fa;
}
.terminal-container .wterm-wrapper {
    width: 100%;
    height: 100%;
}
.terminal-container .wterm-wrapper [data-wterm-root] {
    width: 100% !important;
    height: 100% !important;
    padding: 6px 10px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    user-select: text !important;
    -webkit-user-select: text !important;
    cursor: text;
}
.terminal-container .wterm-wrapper [data-wterm-root] * {
    user-select: text !important;
    -webkit-user-select: text !important;
    -webkit-touch-callout: default !important;
}

/* 连接状态覆盖层 */
.terminal-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(13,17,23,0.85);
    z-index: 10;
    flex-direction: column;
    gap: 14px;
    transition: opacity 0.3s;
}
:root[data-theme="light"] .terminal-overlay {
    background: rgba(246,248,250,0.9);
}
.terminal-overlay.hidden { opacity: 0; pointer-events: none; }
.terminal-overlay .spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.terminal-overlay .msg { font-size: 14px; color: var(--text-secondary); }

/* ===== 文件管理器样式（含动画） ===== */
.file-manager {
    position: absolute;
    top: 40px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--surface);
    z-index: 20;
    display: flex;
    flex-direction: column;
    border-top: 1px solid var(--border);
    visibility: hidden;
    opacity: 0;
    transform: translateX(100%);
    transition: transform 0.3s ease, opacity 0.3s ease, visibility 0.3s;
}
.file-manager.open {
    visibility: visible;
    opacity: 1;
    transform: translateX(0);
}

.fm-header {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
}
.fm-path-box {
    flex: 1;
    display: flex;
    gap: 4px;
}
.fm-path-input {
    flex: 1;
    padding: 4px 8px;
    font-size: 13px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-mono);
}
.fm-search-input {
    flex: 1;
    padding: 6px 8px;
    font-size: 13px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    margin: 0 12px 4px;
}
.fm-toolbar {
    display: flex;
    gap: 6px;
    padding: 6px 12px;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
}
.fm-upload-label {
    cursor: pointer;
}

.fm-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
}
.fm-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 8px;
    border-bottom: 1px solid var(--border);
    animation: fadeInItem 0.2s ease-out;
}
@keyframes fadeInItem {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}
.fm-item:hover {
    background: var(--bg);
}
.fm-item-actions button {
    background: none;
    border: none;
    cursor: pointer;
    margin-left: 8px;
    font-size: 16px;
    padding: 2px;
}

/* 编辑器模态框 */
.fm-editor-modal {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--surface);
    display: flex;
    flex-direction: column;
    z-index: 25;
    padding: 12px;
}
.fm-editor-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
}
.fm-editor-textarea {
    flex: 1;
    resize: vertical;
    font-family: var(--font-mono);
    font-size: 13px;
    padding: 8px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg);
    color: var(--text);
}
.fm-editor-actions {
    display: flex;
    gap: 8px;
    margin-top: 8px;
    justify-content: flex-end;
}
.btn-secondary {
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 8px 16px;
    border-radius: var(--radius);
    cursor: pointer;
}

/* ===== 响应式调整 ===== */
@media (max-width: 480px) {
    .login-card {
        padding: 24px 16px 18px;
        border-radius: 12px;
    }
    .login-card h1 { font-size: 19px; }
    .form-row { flex-direction: column; gap: 0; }
    .form-row .form-group.port-group { flex: 1; }
    .terminal-topbar { padding: 6px 10px; font-size: 11px; }
    .tool-btn { padding: 3px 6px; font-size: 10px; min-width: 30px; }
    .cmd-send-btn { padding: 4px 8px; font-size: 11px; }
}