/* index.css: 精致升级版 v3 (最终版) */

:root {
    --bg-color: #090a0f;
    --panel-bg-color: rgba(26, 26, 26, 0.6);
    --border-color: rgba(255, 255, 255, 0.1);
    --text-primary: #f0f0f0;
    --text-secondary: #a0a0a0;
    --accent-color: #00aaff;
    --hover-bg-color: rgba(0, 170, 255, 0.1);
    --active-bg-color: rgba(0, 170, 255, 0.15);
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --border-radius: 16px;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    --transition-speed: 0.3s;
}

*, *::before, *::after { box-sizing: border-box; }

@keyframes fadeIn-up {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

html, body {
    margin: 0; padding: 0; width: 100%; height: 100%;
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-primary);
    overflow: hidden;
    background-image: radial-gradient(ellipse at 20% 80%, rgba(0, 170, 255, 0.15), transparent 50%),
                      radial-gradient(ellipse at 80% 30%, rgba(120, 80, 220, 0.15), transparent 50%);
    background-size: 100% 100%;
}

#header {
    height: 60px; display: flex; align-items: center;
    padding: 0 2rem; border-bottom: 1px solid var(--border-color);
    position: relative; z-index: 10;
}

#header a {
    color: inherit; text-decoration: none; font-size: 1.6rem;
    font-weight: 700; letter-spacing: -1px;
}


#container {
    display: flex; height: calc(100vh - 60px);
    padding: 0.5rem; /* 保持上下的 padding */
    padding-left: 1.5rem;
    padding-right: 2ch; /* <<< 修改这里：减小右侧的 padding */
    gap: 1rem;
}


#sidebar, #main {
    background-color: var(--panel-bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    position: relative;
    overflow-y: auto;
    scrollbar-width: none; -ms-overflow-style: none;
}
#sidebar::-webkit-scrollbar, #main::-webkit-scrollbar { display: none; }

#sidebar {
  flex: 0 0 20%;
  min-width: 280px;
  padding: 1rem;
}


#sidebar ul { list-style: none; margin: 0; padding: 0; }
#sidebar ul ul {
    padding-left: 20px; border-left: 1px solid var(--border-color);
    margin-left: 10px; margin-top: 4px;
    max-height: 0; overflow: hidden; opacity: 0;
    transition: max-height 0.4s ease, opacity 0.3s ease, margin-top 0.4s ease;
}
#sidebar ul ul.is-open { max-height: 1000px; opacity: 1; }
#sidebar li {
    display: flex; align-items: center; gap: 0.75rem;
    padding: 0.75rem 1rem; color: var(--text-secondary);
    text-decoration: none; border-radius: 12px;
    transition: all var(--transition-speed) ease;
    font-weight: 500; cursor: pointer; position: relative;
}
#sidebar li:hover {
    background-color: var(--hover-bg-color);
    color: var(--text-primary);
    transform: translateX(5px);
}
#sidebar li.active {
    background-color: var(--active-bg-color);
    color: var(--text-primary);
    font-weight: 600;
}
#sidebar li.active::before {
    content: ''; position: absolute; left: -1rem; top: 50%;
    transform: translateY(-50%); width: 4px; height: 60%;
    background: var(--accent-color);
    border-radius: 0 4px 4px 0;
    box-shadow: 0 0 12px var(--accent-color), 0 0 4px rgba(0, 170, 255, 0.7);
    transition: all var(--transition-speed) ease;
}
#sidebar li .icon {
    flex-shrink: 0; width: 20px; height: 20px;
    transition: transform var(--transition-speed) ease;
}
#sidebar li:hover .icon { transform: scale(1.1); }

#main {
  flex: 1 1 auto;   /* 占据剩余空间 */
  width: auto;      /* 覆盖之前的 width */
  min-width: 0;     /* 防止内部内容过宽导致溢出 */
  display: flex;
  flex-direction: column;
  padding: 0;
}


#searchHeader {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    gap: 1rem;
    flex-shrink: 0;
}
#searchInput {
    flex-grow: 1;
    background-color: rgba(0,0,0,0.2);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 8px 12px;
    border-radius: 10px;
    font-size: 14px;
    transition: all 0.2s ease;
}
#searchInput:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(0, 170, 255, 0.2);
}
#searchBtn {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border: none;
    padding: 8px 18px;
    border-radius: 10px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}
#searchBtn:hover {
    background-color: var(--accent-color);
    color: var(--bg-color);
}

#listContainer {
    flex-grow: 1;
    overflow-y: auto;
    padding: 1.5rem;
    scrollbar-width: none; -ms-overflow-style: none;
}
#listContainer::-webkit-scrollbar { display: none; }

.row {
    display: flex; align-items: center; padding: 0.75rem 1.25rem;
    border-radius: 12px;
    transition: background-color var(--transition-speed) ease, transform var(--transition-speed) ease;
    position: relative;
    animation: fadeIn-up 0.5s ease forwards;
    opacity: 0;
}
.row:nth-child(n+1) { animation-delay: calc(0.02s * n); }
.row:hover { background-color: var(--hover-bg-color); transform: translateY(-2px); }
.row.active { background-color: var(--active-bg-color); }
.name-container { display: flex; align-items: center; gap: 0.75rem; font-weight: 500; }
.icon { flex-shrink: 0; width: 20px; height: 20px; }
.size {
    position: absolute; left: 70%; font-size: 0.85rem;
    color: var(--text-secondary); transform: translateX(-50%);
}
.timestamp {
    position: absolute; right: 1.25rem; font-size: 0.85rem;
    color: var(--text-secondary);
}

#contextMenu {
    position: absolute; display: none;
    background-color: rgba(30, 32, 41, 0.8);
    border: 1px solid var(--border-color);
    z-index: 1000; border-radius: 12px;
    box-shadow: var(--shadow); padding: 0.5rem;
    backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
}
#contextMenu ul { list-style: none; margin: 0; padding: 0; }
#contextMenu li {
    padding: 0.6rem 1.2rem; cursor: pointer; border-radius: 8px;
    transition: background-color 0.2s ease, color 0.2s ease;
}
#contextMenu li:hover { background-color: var(--hover-bg-color); color: var(--text-primary); }

#editorContainer, #previewContainer {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    display: flex; flex-direction: column;
    border-radius: var(--border-radius); overflow: hidden;
    animation: fadeIn-up 0.4s ease;
}
#editorHeader, #previewHeader {
    display: flex; align-items: center;
    background-color: rgba(30, 30, 46, 0.8);
    padding: 0.75rem 1rem; border-bottom: 1px solid var(--border-color);
    flex-shrink: 0; gap: 1rem;
}
#editorHeader button, #previewHeader button {
    background-color: rgba(255, 255, 255, 0.1); color: var(--text-primary);
    border: 1px solid transparent; padding: 6px 14px;
    border-radius: 8px; font-size: 14px; font-weight: 500; cursor: pointer;
    transition: all 0.2s ease;
}
#editorHeader button:hover, #previewHeader button:hover {
    background-color: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-1px);
}
#editorHeader .info { margin-left: auto; color: var(--text-secondary); font-size: 0.85rem; }
#previewHeader .info { color: var(--text-primary); font-weight: 500; }
#previewHeader .stats { display: flex; gap: 1rem; margin-left: auto; font-size: 0.85rem; color: var(--text-secondary); }
#previewHeader button.zoom-btn { padding: 6px 10px; font-size: 18px; line-height: 1; }

.CodeMirror { height: 100%; }
.loader {
    position: absolute; top: 50%; left: 50%;
    width: 50px; height: 50px;
    transform: translate(-50%, -50%);
    border: 3px solid rgba(255, 255, 255, 0.2);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: translate(-50%, -50%) rotate(360deg); } }

.preview-content {
    flex-grow: 1; overflow-y: auto; padding: 2rem;
    scrollbar-width: none; -ms-overflow-style: none;
}
.preview-content::-webkit-scrollbar { display: none; }
.preview-content h1, .preview-content h2, .preview-content h3, .preview-content h4 {
    color: var(--text-primary); border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem; margin-top: 1.5rem;
}
.preview-content p, .preview-content li, .preview-content span { color: var(--text-secondary); line-height: 1.7; font-size: 16px; }
.preview-content a { color: var(--accent-color); text-decoration: none; }
.preview-content a:hover { text-decoration: underline; }
.pdf-canvas-container { display: flex; flex-direction: column; align-items: center; gap: 1.5rem; }
.pdf-canvas { max-width: 100%; height: auto; border-radius: 8px; box-shadow: var(--shadow); }
.preview-content table {
    border-collapse: collapse; width: 100%; margin: 1rem 0;
    font-size: 14px; color: var(--text-secondary);
    border: 1px solid var(--border-color);
}
.preview-content th, .preview-content td {
    border: 1px solid var(--border-color); padding: 10px 12px;
    text-align: left; white-space: nowrap;
}
.preview-content th {
    background-color: rgba(0, 170, 255, 0.1); color: var(--text-primary);
    font-weight: 600; position: sticky; top: -2rem;
}
.preview-content tr:nth-child(even) { background-color: rgba(255, 255, 255, 0.02); }
.preview-content tr:hover { background-color: var(--hover-bg-color); }

@keyframes fadeIn-scaleUp {
    from { opacity: 0; transform: translate(-50%, -50%) scale(0.9); }
    to { opacity: 1; transform: translate(-50%, -50%) scale(1); }
}
#media-viewer-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background-color: rgba(9, 10, 15, 0.8);
    backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
    z-index: 2000; display: flex; align-items: center; justify-content: center;
    opacity: 0; transition: opacity 0.3s ease;
}
#media-viewer-overlay.visible { opacity: 1; }
#media-viewer-box {
    position: fixed; top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    max-width: 90vw; max-height: 85vh;
    width: auto; height: auto;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    border-radius: var(--border-radius);
    overflow: hidden;
    animation: fadeIn-scaleUp 0.4s ease forwards;
}
#media-viewer-box img, #media-viewer-box video {
    display: block; width: 100%; height: 100%;
    max-width: 100%; max-height: 85vh;
    object-fit: contain; border-radius: var(--border-radius);
}
#media-viewer-close-btn {
    position: fixed; top: 2rem; right: 2rem;
    width: 40px; height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--text-primary); border: none; border-radius: 50%;
    font-size: 24px; line-height: 40px; text-align: center;
    cursor: pointer; transition: all 0.2s ease;
}
#media-viewer-close-btn:hover {
    background-color: rgba(255, 255, 255, 0.2);
    transform: scale(1.1) rotate(90deg);
}
#media-viewer-filename {
    position: fixed; bottom: 1.5rem; left: 50%;
    transform: translateX(-50%);
    background-color: rgba(0, 0, 0, 0.5);
    color: var(--text-primary); padding: 8px 16px;
    border-radius: 10px; font-size: 14px; font-weight: 500;
    white-space: nowrap;
}

/* ====== Added for Gradient Title ====== */
#homeLink.gradient-text {
    /* Apply gradient to text */
    -webkit-background-clip: text;
    -moz-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    -moz-text-fill-color: transparent;
}

.gradient-1 { background-image: linear-gradient(45deg, #ff9a9e, #fad0c4); }
.gradient-2 { background-image: linear-gradient(45deg, #a18cd1, #fbc2eb); }
.gradient-3 { background-image: linear-gradient(45deg, #84fab0, #8fd3f4); }
.gradient-4 { background-image: linear-gradient(45deg, #fccb90, #d57eeb); }
.gradient-5 { background-image: linear-gradient(45deg, #e0c3fc, #8ec5fc); }
.gradient-6 { background-image: linear-gradient(45deg, #4facfe, #00f2fe); }
.gradient-7 { background-image: linear-gradient(45deg, #fa709a, #fee140); }
/* ====== End of Added Styles ====== */