/* ========================================
   Web SSH Terminal - 现代化深色主题
   ======================================== */

:root {
    /* 主色调 - 赛博朋克风格 */
    --primary: #00d9ff;
    --primary-dim: rgba(0, 217, 255, 0.15);
    --primary-glow: rgba(0, 217, 255, 0.4);
    --accent: #ff3366;
    --accent-dim: rgba(255, 51, 102, 0.15);
    
    /* 背景层次 */
    --bg-deepest: #0a0e14;
    --bg-deep: #0d1117;
    --bg-base: #151b23;
    --bg-elevated: #1c2430;
    --bg-surface: #242d3a;
    --bg-hover: #2d3848;
    
    /* 文字 */
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    
    /* 边框 */
    --border: rgba(255, 255, 255, 0.08);
    --border-active: rgba(0, 217, 255, 0.5);
    
    /* 状态 */
    --success: #2ea043;
    --warning: #d29922;
    --error: #f85149;
    
    /* 其他 */
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-deepest);
    color: var(--text-primary);
    line-height: 1.6;
}

/* ========================================
   布局
   ======================================== */
.app-container {
    display: flex;
    height: 100vh;
    background: 
        radial-gradient(ellipse at 0% 0%, rgba(0, 217, 255, 0.05) 0%, transparent 50%),
        radial-gradient(ellipse at 100% 100%, rgba(255, 51, 102, 0.03) 0%, transparent 50%),
        var(--bg-deepest);
}

/* ========================================
   侧边栏
   ======================================== */
.sidebar {
    width: 280px;
    min-width: 280px;
    background: var(--bg-deep);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--border);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.logo svg {
    width: 28px;
    height: 28px;
    color: var(--primary);
    filter: drop-shadow(0 0 8px var(--primary-glow));
}

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
}

.section-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
}

.connections-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.connection-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    background: var(--bg-base);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
}

.connection-item:hover {
    background: var(--bg-elevated);
    border-color: var(--border-active);
    transform: translateX(4px);
}

.connection-item .icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-dim);
    border-radius: var(--radius-sm);
    color: var(--primary);
}

.connection-item .icon svg {
    width: 18px;
    height: 18px;
}

.connection-item .info {
    flex: 1;
    min-width: 0;
}

.connection-item .name {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.connection-item .host {
    font-size: 12px;
    color: var(--text-muted);
}

.connection-item .delete {
    opacity: 0;
    padding: 6px;
    color: var(--text-muted);
    transition: all var(--transition);
}

.connection-item:hover .delete {
    opacity: 1;
}

.connection-item .delete:hover {
    color: var(--error);
}

.empty-state {
    text-align: center;
    padding: 32px 16px;
    color: var(--text-muted);
}

.empty-state svg {
    width: 48px;
    height: 48px;
    margin-bottom: 12px;
    opacity: 0.5;
}

.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* 一键安装按钮 */
.btn-auto-install {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 14px 20px;
    background: linear-gradient(135deg, #ff3366, #ff6b35);
    border: none;
    border-radius: var(--radius-sm);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.btn-auto-install::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.btn-auto-install:hover::before {
    left: 100%;
}

.btn-auto-install svg {
    width: 20px;
    height: 20px;
}

.btn-auto-install:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255, 51, 102, 0.4);
}

.btn-auto-install:active {
    transform: translateY(0);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: var(--text-secondary);
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--text-muted);
    transition: all var(--transition);
}

.status-indicator.connected .status-dot {
    background: var(--success);
    box-shadow: 0 0 12px var(--success);
    animation: pulse 2s infinite;
}

.status-indicator.error .status-dot {
    background: var(--error);
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ========================================
   主内容区
   ======================================== */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* ========================================
   连接面板
   ======================================== */
.connect-panel {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 48px;
    padding: 40px;
    overflow-y: auto;
}

.connect-card {
    width: 100%;
    max-width: 480px;
    background: var(--bg-base);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow);
}

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

.card-header h2 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--primary), var(--text-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.card-header p {
    color: var(--text-secondary);
    font-size: 14px;
}

/* ========================================
   表单样式
   ======================================== */
.connect-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-row {
    display: flex;
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group.flex-1 { flex: 1; }
.form-group.flex-2 { flex: 2; }

.form-group label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-deep);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: 'JetBrains Mono', monospace;
    font-size: 14px;
    transition: all var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-dim);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* 密码输入框 */
.password-input {
    position: relative;
}

.password-input input {
    padding-right: 48px;
}

.toggle-password {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    transition: color var(--transition);
}

.toggle-password:hover {
    color: var(--text-primary);
}

.toggle-password svg {
    width: 20px;
    height: 20px;
}

/* 认证方式切换 */
.auth-tabs {
    display: flex;
    gap: 8px;
}

.auth-tab {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 16px;
    background: var(--bg-deep);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
}

.auth-tab svg {
    width: 18px;
    height: 18px;
}

.auth-tab:hover {
    background: var(--bg-elevated);
    color: var(--text-primary);
}

.auth-tab.active {
    background: var(--primary-dim);
    border-color: var(--primary);
    color: var(--primary);
}

.auth-panel {
    display: none;
}

.auth-panel.active {
    display: block;
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 表单操作 */
.form-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 8px;
}

.save-connection {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-secondary);
    cursor: pointer;
    user-select: none;
}

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

.btn-primary {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: linear-gradient(135deg, var(--primary), #00a8cc);
    border: none;
    border-radius: var(--radius-sm);
    color: var(--bg-deepest);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
}

.btn-primary svg {
    width: 18px;
    height: 18px;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--primary-glow);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* 快速提示 */
.connect-tips {
    max-width: 280px;
    color: var(--text-secondary);
}

.connect-tips h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.connect-tips h3::before {
    content: '💡';
}

.connect-tips ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.connect-tips li {
    position: relative;
    padding-left: 20px;
    font-size: 13px;
    line-height: 1.5;
}

.connect-tips li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
}

/* ========================================
   终端面板
   ======================================== */
.terminal-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg-base);
    min-height: 0;
    overflow: hidden;
}

.terminal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    background: var(--bg-deep);
    border-bottom: 1px solid var(--border);
}

.terminal-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.terminal-title svg {
    width: 18px;
    height: 18px;
    color: var(--primary);
}

.terminal-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition);
}

.btn-icon svg {
    width: 18px;
    height: 18px;
}

.btn-icon:hover {
    background: var(--bg-surface);
    color: var(--text-primary);
    border-color: var(--text-muted);
}

.btn-icon.btn-disconnect:hover {
    background: var(--accent-dim);
    color: var(--accent);
    border-color: var(--accent);
}

.terminal-container {
    flex: 1;
    padding: 16px;
    overflow: hidden;
    min-height: 0;
    position: relative;
    display: flex;
    flex-direction: column;
}

/* xterm.js 自定义样式 - 关键：限制高度 */
.terminal-container .xterm {
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

.terminal-container .xterm-viewport {
    overflow-y: auto !important;
}

.terminal-container .xterm-screen {
    height: 100% !important;
}

.terminal-container .xterm-viewport {
    border-radius: var(--radius-sm);
}

/* ========================================
   Toast 通知
   ======================================== */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 1000;
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
    animation: slideIn 0.3s ease;
    pointer-events: auto;
}

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

.toast.success {
    border-left: 3px solid var(--success);
}

.toast.error {
    border-left: 3px solid var(--error);
}

.toast.info {
    border-left: 3px solid var(--primary);
}

.toast-icon {
    width: 20px;
    height: 20px;
}

.toast.success .toast-icon {
    color: var(--success);
}

.toast.error .toast-icon {
    color: var(--error);
}

.toast.info .toast-icon {
    color: var(--primary);
}

.toast-message {
    font-size: 14px;
    color: var(--text-primary);
}

.toast-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    margin-left: 8px;
    transition: color var(--transition);
}

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

/* ========================================
   全屏模式
   ======================================== */
.fullscreen .sidebar {
    display: none;
}

.fullscreen .terminal-panel {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 100;
}

/* ========================================
   响应式
   ======================================== */
@media (max-width: 1024px) {
    .connect-panel {
        flex-direction: column;
        gap: 32px;
    }
    
    .connect-tips {
        max-width: 100%;
        text-align: center;
    }
    
    .connect-tips ul {
        align-items: center;
    }
    
    .connect-tips li {
        padding-left: 0;
        text-align: center;
    }
    
    .connect-tips li::before {
        display: none;
    }
}

@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: -280px;
        top: 0;
        bottom: 0;
        z-index: 200;
        transition: left var(--transition);
    }
    
    .sidebar.open {
        left: 0;
    }
    
    .connect-card {
        padding: 24px;
    }
    
    .form-row {
        flex-direction: column;
        gap: 20px;
    }
}

/* ========================================
   滚动条
   ======================================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-deep);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-surface);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--bg-hover);
}