/* ===== PasteList 在线体验 ===== */

:root {
    --primary-blue: #3b82f6;
    --primary-dark: #1e40af;
    --primary-light: #60a5fa;
    --cyan: #06b6d4;
    --cyan-light: #67e8f9;
    --bg-dark: #0f172a;
    --bg-darker: #020617;
    --bg-card: #1e293b;
    --bg-card-hover: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: #334155;
    --border-light: #475569;
    --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 60px rgba(59, 130, 246, 0.3);
    --font-mono: 'Fira Code', 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
}

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

body {
    font-family: var(--font-sans);
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* 顶部返回栏 */
.demo-topbar {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.9rem 1.5rem;
    background: rgba(2, 6, 23, 0.85);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s ease;
}

.back-link:hover { color: var(--primary-light); }

.topbar-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 1rem;
}
.brand-logo { font-size: 1.4rem; }

.topbar-tag {
    font-size: 0.75rem;
    color: var(--text-muted);
    background: rgba(59, 130, 246, 0.08);
    border: 1px solid rgba(59, 130, 246, 0.2);
    padding: 4px 10px;
    border-radius: 16px;
}

/* 背景光晕 */
.demo-glow {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}
.demo-glow .glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(110px);
    opacity: 0.45;
}
.demo-glow .glow-blue {
    width: 480px; height: 480px;
    background: radial-gradient(circle, rgba(59,130,246,.4) 0%, transparent 70%);
    top: 5%; left: 12%;
}
.demo-glow .glow-cyan {
    width: 380px; height: 380px;
    background: radial-gradient(circle, rgba(6,182,212,.35) 0%, transparent 70%);
    bottom: 2%; right: 8%;
}

.demo-main { position: relative; z-index: 1; }
.stage { max-width: 1180px; margin: 0 auto; padding: 3rem 1.5rem 4rem; }

/* 引导区 */
.intro { text-align: center; margin-bottom: 2.5rem; }
.intro-badge {
    display: inline-flex; align-items: center; gap: 6px;
    background: rgba(59,130,246,.12);
    border: 1px solid rgba(59,130,246,.3);
    padding: 6px 16px; border-radius: 24px;
    font-size: .85rem; font-weight: 500; color: var(--primary-light);
    margin-bottom: 1.2rem;
}
.intro-title {
    font-size: 2rem; font-weight: 800; margin-bottom: .8rem; letter-spacing: -.02em;
}
.intro-desc { color: var(--text-secondary); font-size: 1rem; margin-bottom: 1.2rem; }
.intro-tips {
    display: flex; flex-wrap: wrap; justify-content: center; gap: .75rem 1.5rem;
    font-size: .85rem; color: var(--text-muted);
}
.intro-tips b {
    color: var(--primary-light);
    background: rgba(59,130,246,.1);
    padding: 2px 8px; border-radius: 6px;
    font-family: var(--font-mono); font-weight: 600;
}

/* 工作区 */
.workspace {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 1.5rem;
    align-items: start;
}

/* 应用窗口 */
.app-window {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    min-height: 480px;
}

.app-titlebar {
    display: flex; align-items: center; gap: 12px;
    padding: 12px 16px;
    background: var(--bg-darker);
    border-bottom: 1px solid var(--border-color);
}
.titlebar-controls { display: flex; gap: 8px; }
.control { width: 12px; height: 12px; border-radius: 50%; display: inline-block; }
.control-red { background: #ef4444; }
.control-yellow { background: #eab308; }
.control-green { background: #22c55e; }
.titlebar-title { color: var(--text-secondary); font-size: .875rem; flex: 1; }

.capture-switch {
    display: flex; align-items: center; gap: 8px;
    font-size: .75rem; color: var(--text-secondary); cursor: pointer;
}
.toolbar-capture {
    background: var(--bg-darker);
    border: 1px solid var(--border-color);
    padding: 6px 12px; border-radius: 10px;
    transition: border-color .2s ease;
}
.toolbar-capture:hover { border-color: var(--primary-blue); }
.switch { position: relative; width: 36px; height: 20px; display: inline-block; }
.switch input { display: none; }
.slider {
    position: absolute; inset: 0;
    background: var(--border-light); border-radius: 20px; transition: .2s;
}
.slider::before {
    content: ''; position: absolute; width: 16px; height: 16px;
    left: 2px; top: 2px; background: #fff; border-radius: 50%; transition: .2s;
}
.switch input:checked + .slider { background: var(--gradient-primary); }
.switch input:checked + .slider::before { transform: translateX(16px); }

/* 工具栏 */
.app-toolbar {
    display: flex; gap: 8px; align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
}
.search-box {
    flex: 1; min-width: 180px;
    display: flex; align-items: center; gap: 8px;
    background: var(--bg-darker);
    border: 1px solid var(--border-color);
    border-radius: 10px; padding: 8px 12px;
    color: var(--text-muted);
}
.search-box:focus-within { border-color: var(--primary-blue); box-shadow: 0 0 0 3px rgba(59,130,246,.15); }
.search-box input {
    flex: 1; background: transparent; border: none; outline: none;
    color: var(--text-primary); font-size: .9rem; font-family: inherit;
}
.clear-search {
    background: none; border: none; color: var(--text-muted);
    cursor: pointer; font-size: .85rem; padding: 2px; display: none;
}
.clear-search:hover { color: var(--text-primary); }

.toolbar-btn {
    background: var(--bg-darker);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 8px 14px; border-radius: 10px;
    cursor: pointer; font-size: .85rem; font-weight: 500;
    transition: all .2s ease;
}
.toolbar-btn:hover { border-color: var(--primary-blue); color: var(--primary-light); }
.add-btn:hover { border-color: var(--primary-blue); color: var(--primary-light); }
.clear-all-btn:hover { border-color: #ef4444; color: #f87171; }

/* 内容区 */
.app-content {
    flex: 1;
    overflow-y: auto;
    max-height: 420px;
    padding: 16px;
}
.clip-list { display: flex; flex-direction: column; gap: 8px; }

.clip-item {
    display: flex; align-items: center; gap: 12px;
    padding: 12px 14px;
    background: var(--bg-darker);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    cursor: pointer;
    transition: all .2s ease;
    position: relative;
}
.clip-item:hover { background: var(--bg-card-hover); border-color: rgba(59,130,246,.6); transform: translateX(3px); }
.clip-item.active { border-color: var(--primary-blue); background: rgba(59,130,246,.1); }

.item-time {
    flex-shrink: 0; width: 62px; text-align: center;
    font-size: .7rem; color: var(--text-muted);
    background: rgba(255,255,255,.04);
    padding: 3px 6px; border-radius: 6px;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.item-content {
    flex: 1; min-width: 0;
    font-family: var(--font-mono); font-size: .85rem; color: var(--text-primary);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.item-actions { display: flex; gap: 6px; flex-shrink: 0; }
.icon-btn {
    width: 30px; height: 30px; border-radius: 8px;
    border: 1px solid var(--border-color);
    background: transparent; color: var(--text-secondary);
    font-size: .8rem; cursor: pointer; display: inline-flex;
    align-items: center; justify-content: center;
    transition: all .2s ease;
}
.icon-btn:hover { background: var(--bg-card); }
.icon-btn.copy-btn:hover { border-color: var(--primary-blue); color: var(--primary-light); }
.icon-btn.edit-btn:hover { border-color: var(--cyan); color: var(--cyan-light); }
.icon-btn.del-btn:hover { border-color: #ef4444; color: #f87171; }

/* 空状态 */
.empty-state { text-align: center; padding: 3.5rem 1rem; color: var(--text-muted); }
.empty-icon { font-size: 3rem; margin-bottom: .8rem; opacity: .7; }
.empty-title { font-size: 1.05rem; color: var(--text-secondary); margin-bottom: .4rem; }
.empty-desc { font-size: .85rem; }

/* 状态栏 */
.app-statusbar {
    display: flex; align-items: center; justify-content: space-between;
    padding: 8px 16px; font-size: .75rem; color: var(--text-muted);
    border-top: 1px solid var(--border-color);
    background: var(--bg-darker);
}
.status-hint { color: var(--text-muted); }

/* 模拟剪贴板面板 */
.clipboard-panel {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.4rem;
    box-shadow: var(--shadow-lg);
}
.panel-title { font-size: 1rem; margin-bottom: .4rem; display: flex; align-items: center; gap: 6px; }
.panel-desc { font-size: .82rem; color: var(--text-secondary); margin-bottom: 1rem; }
.mock-input {
    width: 100%; background: var(--bg-darker);
    border: 1px solid var(--border-color); border-radius: 10px;
    padding: 12px; color: var(--text-primary); font-family: var(--font-mono);
    font-size: .85rem; resize: vertical; outline: none; transition: border .2s ease;
}
.mock-input:focus { border-color: var(--primary-blue); box-shadow: 0 0 0 3px rgba(59,130,246,.15); }
.mock-copy-btn {
    width: 100%; margin-top: 10px;
    background: var(--gradient-primary); color: #fff;
    border: none; padding: 12px; border-radius: 10px;
    font-size: .9rem; font-weight: 600; cursor: pointer;
    box-shadow: var(--shadow-glow); transition: transform .2s ease, box-shadow .2s ease;
}
.mock-copy-btn:hover { transform: translateY(-2px); box-shadow: 0 0 80px rgba(59,130,246,.4); }
.mock-copy-btn:active { transform: translateY(0); }

.panel-sep { height: 1px; background: var(--border-color); margin: 1.4rem 0; }
.panel-list { list-style: none; display: flex; flex-direction: column; gap: .5rem; }
.panel-list li { font-size: .82rem; color: var(--text-secondary); padding-left: 1rem; position: relative; }
.panel-list li::before { content: '•'; position: absolute; left: 0; color: var(--primary-light); }
.panel-list b { color: var(--text-primary); }

/* 模态框 */
.modal {
    position: fixed; inset: 0; z-index: 200;
    display: flex; align-items: center; justify-content: center;
    background: rgba(2, 6, 23, 0.7); backdrop-filter: blur(4px);
    padding: 1rem;
}
.modal[hidden] { display: none; }
.modal-content {
    width: 100%; max-width: 480px;
    background: var(--bg-card); border: 1px solid var(--border-light);
    border-radius: 14px; box-shadow: var(--shadow-lg); overflow: hidden;
}
.modal-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 14px 18px; border-bottom: 1px solid var(--border-color);
}
.modal-header h3 { font-size: 1rem; }
.modal-close { background: none; border: none; color: var(--text-secondary); font-size: 1rem; cursor: pointer; }
.modal-close:hover { color: var(--text-primary); }
.modal-body { padding: 18px; }
.modal-label { display: block; font-size: .8rem; color: var(--text-secondary); margin-bottom: 6px; }
.modal-textarea {
    width: 100%; background: var(--bg-darker); border: 1px solid var(--border-color);
    border-radius: 10px; padding: 12px; color: var(--text-primary);
    font-family: var(--font-mono); font-size: .85rem; resize: vertical; outline: none;
}
.modal-textarea:focus { border-color: var(--primary-blue); }
.modal-error { color: #f87171; font-size: .8rem; margin-top: 8px; }
.modal-footer {
    display: flex; justify-content: flex-end; gap: 10px;
    padding: 14px 18px; border-top: 1px solid var(--border-color);
}
.modal-btn { padding: 9px 18px; border-radius: 10px; font-size: .85rem; font-weight: 600; cursor: pointer; border: none; }
.cancel-btn { background: transparent; border: 1px solid var(--border-color); color: var(--text-secondary); }
.cancel-btn:hover { color: var(--text-primary); }
.save-btn { background: var(--gradient-primary); color: #fff; }
.save-btn:hover { transform: translateY(-1px); }

/* Toast */
.toast {
    position: fixed; bottom: 24px; right: 24px; z-index: 300;
    background: var(--gradient-primary); color: #fff;
    padding: 12px 20px; border-radius: 10px; font-size: .875rem; font-weight: 500;
    box-shadow: 0 4px 24px rgba(59,130,246,.35);
    animation: toastIn .3s ease;
    max-width: 340px;
}
.toast[hidden] { display: none; }
@keyframes toastIn { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }

/* 响应式 */
@media (max-width: 920px) {
    .workspace { grid-template-columns: 1fr; }
    .topbar-tag { display: none; }
}
@media (max-width: 560px) {
    .intro-title { font-size: 1.5rem; }
    .stage { padding: 2rem 1rem 3rem; }
    .clip-item { flex-wrap: wrap; }
    .item-content { white-space: normal; }
    .status-hint { display: none; }
}