/* =========================================
   FUXIAO0416::HUB — Enhanced Style System
   多彩配色 / 毛玻璃虚实 / 工业科幻
   ========================================= */

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

html {
    overflow-y: scroll;
}

/* 滚动条：黄色滑块 + 白色滑槽 */
html::-webkit-scrollbar { width: 8px; }
html::-webkit-scrollbar-track { background: rgba(255,255,255,0.08); }
html::-webkit-scrollbar-thumb { background: #ffc800; border-radius: 4px; }
html::-webkit-scrollbar-thumb:hover { background: #ffd740; }

:root {
    /* Surfaces */
    --bg-0: #000000;
    --bg-1: #060608;
    --bg-2: #0c0c10;
    --bg-3: #121218;
    --bg-4: #1a1a24;
    --bg-hover: #1e1e2a;

    /* Text */
    --t1: #f0f0f5;
    --t2: #a0a0b8;
    --t3: #606078;
    --t4: #3a3a50;

    /* Accent Palette — 多彩 */
    --blue: #1e90ff;
    --blue-g: rgba(30,144,255,0.15);
    --cyan: #00e5ff;
    --cyan-g: rgba(0,229,255,0.12);
    --purple: #b44dff;
    --purple-g: rgba(180,77,255,0.12);
    --orange: #ff6b35;
    --orange-g: rgba(255,107,53,0.12);
    --pink: #ff3d8e;
    --pink-g: rgba(255,61,142,0.12);
    --green: #00ff88;
    --green-g: rgba(0,255,136,0.12);
    --red: #ff4455;
    --red-g: rgba(255,68,85,0.12);

    --border: #1a1a28;
    --border-accent: var(--blue);

    --font-d: 'Orbitron', sans-serif;
    --font-b: 'Noto Sans SC', 'Rajdhani', sans-serif;
    --font-m: 'Fira Code', 'Rajdhani', monospace;

    --nav-h: 68px;
    --radius: 4px;

    --fast: 0.2s cubic-bezier(0.4,0,0.2,1);
    --med: 0.4s cubic-bezier(0.4,0,0.2,1);
    --slow: 0.8s cubic-bezier(0.4,0,0.2,1);
}

html { scroll-behavior:smooth; scrollbar-width:thin; scrollbar-color:#ffc800 rgba(255,255,255,0.08); }
body { font-family:var(--font-b); background:var(--bg-0); color:var(--t1); overflow-x:hidden; cursor:none; line-height:1.6; width:100%; }
a { color:inherit; text-decoration:none; }
::selection { background:var(--blue); color:var(--bg-0); }
.hidden { display:none !important; }

/* === GLASS CARD — 毛玻璃虚实效果 === */
.glass-card {
    background: rgba(12,12,18,0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius);
    position: relative;
    overflow: hidden;
    transition: border-color var(--med), box-shadow var(--med), transform var(--med);
}
.glass-card::before {
    content:'';
    position:absolute; top:0; left:0; right:0; height:1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
}
.glass-card:hover {
    border-color: rgba(255,255,255,0.12);
    box-shadow: 0 8px 40px rgba(0,0,0,0.4);
    transform: translateY(-2px);
}

/* === LOADING === */
#loading-screen {
    position:fixed; inset:0; background:var(--bg-0); z-index:10000;
    display:flex; align-items:center; justify-content:center;
    transition: opacity 0.6s, visibility 0.6s;
}
#loading-screen.done { opacity:0; visibility:hidden; pointer-events:none; }
.loader-content { text-align:center; width:320px; }
.loader-icon-wrap { margin-bottom:32px; }
.loader-icon { width:70px; height:70px; color:var(--blue); animation:pulse 2s ease-in-out infinite; }
@keyframes pulse { 0%,100%{opacity:.5;transform:scale(1)} 50%{opacity:1;transform:scale(1.05)} }
.loader-bar-wrap { display:flex; flex-direction:column; gap:10px; align-items:center; }
.loader-label { font-family:var(--font-d); font-size:10px; letter-spacing:4px; color:var(--t3); }
.loader-bar-track { width:100%; height:2px; background:var(--border); overflow:hidden; }
.loader-bar-fill { height:100%; width:0; background:linear-gradient(90deg,var(--blue),var(--cyan),var(--purple)); transition:width .1s; box-shadow:0 0 12px var(--blue); }
.loader-pct { font-family:var(--font-d); font-size:22px; color:var(--blue); letter-spacing:2px; }
.loader-status { margin-top:16px; font-family:var(--font-m); font-size:10px; color:var(--t4); letter-spacing:2px; animation:blink 1s step-end infinite; }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:.3} }

/* === LOGIN === */
#login-screen {
    position:fixed; inset:0; z-index:9000;
    display:flex; align-items:center; justify-content:center;
}
#login-particles { position:absolute; inset:0; z-index:0; }
.login-container { position:relative; z-index:1; width:100%; max-width:460px; padding:0 20px; }
.login-frame {
    background:rgba(8,8,14,0.85);
    backdrop-filter:blur(30px);
    border:1px solid var(--border);
    padding:48px 40px;
    position:relative;
}
.login-corner { position:absolute; width:20px; height:20px; border-color:var(--blue); border-style:solid; border-width:0; }
.login-corner.tl { top:-1px;left:-1px;border-top-width:2px;border-left-width:2px; }
.login-corner.tr { top:-1px;right:-1px;border-top-width:2px;border-right-width:2px; }
.login-corner.bl { bottom:-1px;left:-1px;border-bottom-width:2px;border-left-width:2px; }
.login-corner.br { bottom:-1px;right:-1px;border-bottom-width:2px;border-right-width:2px; }
.login-header { text-align:center; margin-bottom:36px; }
.login-logo { font-family:var(--font-d); font-size:24px; font-weight:700; letter-spacing:4px; color:var(--t1); }
.login-subtitle { font-family:var(--font-d); font-size:9px; letter-spacing:4px; color:var(--t4); margin-top:12px; }
.login-instruction { font-size:13px; color:var(--t3); margin-bottom:24px; }
.login-prompt { color:var(--cyan); font-family:var(--font-m); }
.field-label { font-family:var(--font-d); font-size:9px; letter-spacing:3px; color:var(--t4); display:block; margin-bottom:10px; }
.field-input-wrap { position:relative; }
.field-input {
    width:100%; padding:14px 0; font-family:var(--font-b); font-size:16px;
    color:var(--t1); background:transparent; border:none;
    border-bottom:1px solid var(--border); outline:none;
    transition: border-color var(--fast);
}
.field-input::placeholder { color:var(--t4); }
.field-input:focus { border-bottom-color:var(--blue); }
.field-line { position:absolute; bottom:0; left:0; width:0; height:1px; background:var(--blue); transition:width var(--med); }
.field-input:focus ~ .field-line { width:100%; }
.login-error { margin-top:12px; font-size:12px; color:var(--red); display:flex; align-items:center; gap:6px; }
.error-icon { font-size:14px; }
.login-hint { text-align:center; margin-top:24px; font-family:var(--font-d); font-size:9px; letter-spacing:3px; color:var(--t4); display:flex; align-items:center; justify-content:center; gap:8px; }
.hint-dot { width:6px; height:6px; border-radius:50%; background:var(--orange); animation:pulse 2s infinite; }
.login-scanline {
    position:absolute; top:0; left:0; right:0; height:100%;
    background: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0,0,0,0.05) 2px, rgba(0,0,0,0.05) 4px);
    pointer-events:none;
}
.login-field { margin-bottom:28px; }

/* === CURSOR === */
#cursor-dot { position:fixed; width:6px; height:6px; background:var(--blue); border-radius:50%; pointer-events:none; z-index:9999; transform:translate(-50%,-50%); mix-blend-mode:difference; transition:transform .1s,width .3s,height .3s,background .3s; }
#cursor-ring { position:fixed; width:36px; height:36px; border:1px solid rgba(30,144,255,0.4); border-radius:50%; pointer-events:none; z-index:9998; transform:translate(-50%,-50%); transition:transform .15s,width .3s,height .3s,border-color .3s; }
body.cursor-hover #cursor-dot { width:12px; height:12px; background:var(--cyan); }
body.cursor-hover #cursor-ring { width:50px; height:50px; border-color:var(--cyan); }

/* === SCANLINES === */
.scanlines-overlay {
    position:fixed; inset:0; z-index:900; pointer-events:none;
    background: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0,0,0,0.03) 2px, rgba(0,0,0,0.03) 4px);
}

/* === CANVAS BG === */
#particle-canvas { position:fixed; inset:0; z-index:0; pointer-events:none; opacity:.35; }
#star-trail-canvas { position:fixed; inset:0; z-index:0; pointer-events:none; opacity:0.55; }

/* === INDUSTRIAL TEXTURE BG === */
.industrial-bg {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    background: url('bg-industrial.png') repeat;
    background-size: 512px 512px;
    opacity: 0.04;
    filter: grayscale(1) brightness(0.3);
}

/* === CURSOR LIGHT — 伪光源照亮背景 === */
.cursor-light {
    position: fixed;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    pointer-events: none;
    z-index: -1;
    transform: translate(-50%, -50%);
    background: url('bg-industrial.png') repeat;
    background-size: 512px 512px;
    filter: grayscale(0.4) brightness(1.2);
    opacity: 0;
    transition: opacity 0.3s ease;
    mask-image: radial-gradient(circle, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.25) 30%, transparent 65%);
    -webkit-mask-image: radial-gradient(circle, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.25) 30%, transparent 65%);
}

.cursor-light.active {
    opacity: 1;
}

/* === NAV === */
#main-nav {
    position:fixed; top:0; left:0; width:100%; height:var(--nav-h);
    display:flex; align-items:center; justify-content:space-between;
    padding:0 32px; z-index:1000;
    background:rgba(0,0,0,0.8); backdrop-filter:blur(24px);
    border-bottom:1px solid var(--border);
    transition:transform var(--med);
}

/* 访客模式下，导航栏下移到横幅下方 */
body:not(.logged-in) #main-nav {
    top: 48px;
}
#main-nav.nav-hide { transform:translateY(-100%); }
.nav-left { display:flex; align-items:center; gap:10px; }
.nav-logo { font-family:var(--font-d); font-size:14px; font-weight:700; letter-spacing:3px; }
.nav-sep { color:var(--t4); font-family:var(--font-m); }
.nav-tag { font-family:var(--font-m); font-size:10px; color:var(--t4); letter-spacing:2px; }
.nav-center { display:flex; gap:4px; }
.nav-link { display:flex; align-items:center; gap:6px; padding:8px 14px; font-size:13px; color:var(--t3); transition:color var(--fast); position:relative; }
.nav-link::after { content:''; position:absolute; bottom:0; left:50%; width:0; height:1px; background:var(--blue); transition:width var(--med),left var(--med); }
.nav-link:hover,.nav-link.active { color:var(--t1); }
.nav-link:hover::after,.nav-link.active::after { width:100%; left:0; }
.nl-idx { font-family:var(--font-d); font-size:9px; color:var(--blue); opacity:.6; }
.nl-txt { font-weight:500; }
.nav-right { display:flex; align-items:center; gap:16px; }
.nav-time { font-family:var(--font-d); font-size:11px; color:var(--t4); letter-spacing:2px; }
.nav-music-ctrl { width:36px; height:36px; display:flex; align-items:center; justify-content:center; border:1px solid var(--border); cursor:none; transition:border-color var(--fast); position:relative; }
.nav-music-ctrl:hover { border-color:var(--purple); }
.music-icon { width:18px; height:18px; color:var(--t3); }
.nav-music-ctrl.playing .music-icon { color:var(--purple); }
.music-bars { position:absolute; bottom:2px; left:50%; transform:translateX(-50%); display:flex; gap:1px; opacity:0; }
.nav-music-ctrl.playing .music-bars { opacity:1; }
.music-bars span { width:2px; background:var(--purple); animation:musicBar .8s ease-in-out infinite; }
.music-bars span:nth-child(1) { height:6px; animation-delay:0s; }
.music-bars span:nth-child(2) { height:8px; animation-delay:.15s; }
.music-bars span:nth-child(3) { height:4px; animation-delay:.3s; }
.music-bars span:nth-child(4) { height:7px; animation-delay:.45s; }
@keyframes musicBar { 0%,100%{transform:scaleY(.4)} 50%{transform:scaleY(1)} }
.nav-user { width:32px; height:32px; border-radius:50%; overflow:hidden; border:1px solid var(--border); cursor:none; }
.nav-avatar-placeholder { width:100%; height:100%; display:flex; align-items:center; justify-content:center; background:var(--bg-3); font-family:var(--font-d); font-size:12px; color:var(--blue); }
.nav-avatar-placeholder img { width:100%; height:100%; object-fit:cover; }
.nav-menu-btn { display:none; flex-direction:column; gap:5px; background:none; border:none; cursor:none; padding:8px; }
.nav-menu-btn span { width:24px; height:1px; background:var(--t1); transition:transform var(--fast),opacity var(--fast); }
.nav-menu-btn.active span:nth-child(1) { transform:translateY(6px) rotate(45deg); }
.nav-menu-btn.active span:nth-child(2) { opacity:0; }
.nav-menu-btn.active span:nth-child(3) { transform:translateY(-6px) rotate(-45deg); }

/* Mobile Menu */
.mobile-menu { position:fixed; inset:0; z-index:999; pointer-events:none; opacity:0; transition:opacity var(--med); }
.mobile-menu.active { pointer-events:all; opacity:1; }
.mobile-menu-bg { position:absolute; inset:0; background:rgba(0,0,0,0.95); backdrop-filter:blur(30px); }
.mobile-menu-content { position:relative; display:flex; flex-direction:column; justify-content:center; align-items:center; height:100%; gap:24px; }
.mobile-link { display:flex; align-items:center; gap:20px; font-size:28px; font-weight:600; color:var(--t3); transition:color var(--fast),transform var(--fast); }
.mobile-link:hover { color:var(--t1); transform:translateX(10px); }
.ml-idx { font-family:var(--font-d); font-size:12px; color:var(--blue); opacity:.5; }

/* Side */
.side-ind { position:fixed; top:50%; transform:translateY(-50%); z-index:100; display:flex; flex-direction:column; align-items:center; gap:14px; }
.side-ind.left { left:16px; }
.side-ind.right { right:16px; }
.side-txt { writing-mode:vertical-rl; font-family:var(--font-d); font-size:8px; letter-spacing:3px; color:var(--t4); opacity:.4; }
.side-line { width:1px; height:50px; background:linear-gradient(to bottom,transparent,var(--t4),transparent); opacity:.2; }

/* === SECTIONS === */
.section { position:relative; z-index:1; min-height:auto; padding:0; margin:0; font-size:0; }
.section:first-of-type { padding-top: 130px; }
.section-inner { max-width:1200px; margin:0 auto; padding: 40px 48px 40px; font-size:14px; line-height:1.6; }
.section-header { text-align:center; margin-bottom:60px; }
.section-tag { display:inline-flex; align-items:center; gap:10px; font-family:var(--font-d); font-size:9px; letter-spacing:4px; color:var(--t4); margin-bottom:20px; }
.tag-line { width:28px; height:1px; background:var(--blue); }
.section-title { font-size:42px; font-weight:700; letter-spacing:2px; display:inline-block; }
.section-desc { font-family:var(--font-d); font-size:10px; letter-spacing:4px; color:var(--t4); margin-top:12px; }

/* Hero grid overlay */
.hero-grid-overlay {
    position:absolute; inset:0; pointer-events:none;
    background-image: linear-gradient(rgba(30,144,255,0.025) 1px,transparent 1px),linear-gradient(90deg,rgba(30,144,255,0.025) 1px,transparent 1px);
    background-size:60px 60px;
}

/* === DASHBOARD === */
.dashboard-section { padding-top:calc(var(--nav-h) + 60px); display:flex; align-items:flex-start; }
.dash-welcome { margin-bottom:48px; }
.dash-hi { font-family:var(--font-d); font-size:11px; letter-spacing:5px; color:var(--t3); }
.dash-name { font-size:56px; font-weight:700; letter-spacing:4px; background:linear-gradient(135deg,var(--blue),var(--cyan),var(--purple)); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; line-height:1.2; }
.dash-desc { font-size:15px; color:var(--t3); margin-top:12px; max-width:600px; }

/* Stats */
.dash-stats { display:grid; grid-template-columns:repeat(4,1fr); gap:16px; margin-bottom:40px; }
.stat-card { padding:24px; display:flex; align-items:center; gap:16px; }
.stat-card[data-color="blue"] { --card-accent:var(--blue); --card-glow:var(--blue-g); }
.stat-card[data-color="purple"] { --card-accent:var(--purple); --card-glow:var(--purple-g); }
.stat-card[data-color="cyan"] { --card-accent:var(--cyan); --card-glow:var(--cyan-g); }
.stat-card[data-color="orange"] { --card-accent:var(--orange); --card-glow:var(--orange-g); }
.stat-icon { width:42px; height:42px; color:var(--card-accent); flex-shrink:0; }
.stat-icon svg { width:100%; height:100%; }
.stat-info { display:flex; flex-direction:column; }
.stat-num { font-family:var(--font-d); font-size:28px; font-weight:700; color:var(--card-accent); }
.stat-label { font-size:12px; color:var(--t3); letter-spacing:1px; }
.stat-glow { position:absolute; top:-20px; right:-20px; width:80px; height:80px; border-radius:50%; background:var(--card-glow); filter:blur(30px); pointer-events:none; }

/* Quick Upload */
.dash-quick-upload { margin-bottom:40px; }
.quick-upload-zone {
    padding:48px; text-align:center;
    border:2px dashed var(--border);
    transition:border-color var(--fast),background var(--fast);
    cursor:none;
}
.quick-upload-zone:hover,.quick-upload-zone.dragover {
    border-color:var(--blue);
    background:rgba(30,144,255,0.03);
}
.upload-icon-animated svg { width:48px; height:48px; color:var(--t3); margin-bottom:16px; }
.upload-hint { font-size:14px; color:var(--t3); margin-bottom:8px; }
.upload-browse { color:var(--blue); border-bottom:1px solid transparent; transition:border-color var(--fast); cursor:none; }
.upload-browse:hover { border-bottom-color:var(--blue); }
.upload-formats { font-size:11px; color:var(--t4); letter-spacing:1px; }

/* Recent */
.dash-recent { margin-bottom:40px; }
.recent-header { margin-bottom:20px; display:flex; align-items:center; gap:12px; }
.recent-title { font-size:18px; font-weight:600; display:flex; align-items:center; gap:10px; }
.recent-tag { font-family:var(--font-d); font-size:9px; letter-spacing:2px; padding:3px 10px; background:var(--bg-3); color:var(--t4); }
.recent-list { display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:12px; }
.empty-state { grid-column:1/-1; text-align:center; padding:60px; color:var(--t4); }
.empty-icon { font-size:40px; margin-bottom:12px; opacity:.5; }

/* File item */
.file-item {
    display:flex; align-items:center; gap:14px;
    padding:14px 18px;
    background:rgba(12,12,18,0.5); border:1px solid var(--border);
    transition:border-color var(--fast),background var(--fast);
    cursor:none;
}
.file-item:hover { border-color:var(--blue); background:var(--bg-hover); }
.fi-icon { width:36px; height:36px; display:flex; align-items:center; justify-content:center; font-size:20px; flex-shrink:0; }
.fi-info { flex:1; min-width:0; }
.fi-name { font-size:13px; font-weight:500; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.fi-meta { font-size:11px; color:var(--t4); font-family:var(--font-m); margin-top:2px; }
.fi-actions { display:flex; gap:4px; }
.fi-btn { width:28px; height:28px; display:flex; align-items:center; justify-content:center; background:none; border:1px solid var(--border); color:var(--t3); font-size:12px; cursor:none; transition:all var(--fast); }
.fi-btn:hover { border-color:var(--blue); color:var(--blue); }
.fi-btn.delete:hover { border-color:var(--red); color:var(--red); }

/* === UPLOADS === */
.uploads-section { padding-top:calc(var(--nav-h) + 80px); }
.upload-area { margin-bottom:40px; }
.upload-tabs { display:flex; border-bottom:1px solid var(--border); }
.upload-tab {
    padding:14px 24px; font-size:13px; font-weight:500;
    background:none; border:none; border-bottom:2px solid transparent;
    color:var(--t3); cursor:none; transition:all var(--fast); letter-spacing:1px;
}
.upload-tab:hover { color:var(--t2); }
.upload-tab.active { color:var(--t1); border-bottom-color:var(--blue); }
.upload-panel { display:none; padding:32px; }
.upload-panel.active { display:block; }

/* Dropzone */
.upload-dropzone {
    padding:60px; text-align:center; border:2px dashed var(--border);
    transition:all var(--fast); cursor:none; position:relative;
}
.upload-dropzone:hover,.upload-dropzone.dragover { border-color:var(--cyan); background:rgba(0,229,255,0.02); }
.dropzone-visual { position:relative; display:inline-block; margin-bottom:20px; }
.dz-ring { position:absolute; inset:-20px; border:1px solid var(--cyan); border-radius:50%; opacity:0; animation:ringPulse 3s ease-out infinite; }
.dz-ring.delay { animation-delay:1.5s; }
@keyframes ringPulse { 0%{opacity:.3;transform:scale(.5)} 100%{opacity:0;transform:scale(1.4)} }
.dz-icon { width:48px; height:48px; color:var(--t3); }
.dz-text { font-size:16px; color:var(--t2); margin-bottom:8px; }
.dz-subtext { font-size:12px; color:var(--t4); }

/* Text Editor */
.text-editor { display:flex; flex-direction:column; gap:16px; }
.editor-toolbar { border-bottom:1px solid var(--border); padding-bottom:12px; }
.editor-title-input {
    width:100%; padding:8px 0; font-size:20px; font-weight:600;
    background:transparent; border:none; color:var(--t1); outline:none;
}
.editor-title-input::placeholder { color:var(--t4); }
.editor-textarea {
    width:100%; min-height:240px; padding:16px; font-family:var(--font-b); font-size:15px;
    background:var(--bg-2); border:1px solid var(--border); color:var(--t2);
    outline:none; resize:vertical; line-height:1.8;
    transition:border-color var(--fast);
}
.editor-textarea:focus { border-color:var(--blue); }
.editor-actions { display:flex; justify-content:flex-end; }

/* Code Editor */
.code-editor { display:flex; flex-direction:column; gap:12px; }
.code-toolbar { display:flex; gap:12px; align-items:center; }
.code-filename {
    flex:1; padding:8px 12px; font-family:var(--font-m); font-size:13px;
    background:var(--bg-2); border:1px solid var(--border); color:var(--t1); outline:none;
}
.code-lang {
    padding:8px 12px; font-family:var(--font-m); font-size:12px;
    background:var(--bg-2); border:1px solid var(--border); color:var(--t2);
    outline:none; cursor:none;
}
.code-lang option { background:var(--bg-2); }
.code-area-wrap { display:flex; border:1px solid var(--border); background:var(--bg-1); min-height:300px; }
.code-line-numbers {
    padding:16px 12px; font-family:var(--font-m); font-size:13px; line-height:1.65;
    color:var(--t4); text-align:right; user-select:none; min-width:40px;
    border-right:1px solid var(--border); white-space:pre-line;
}
.code-textarea {
    flex:1; padding:16px; font-family:var(--font-m); font-size:13px; line-height:1.65;
    background:transparent; border:none; color:var(--cyan); outline:none;
    resize:none; white-space:pre; tab-size:4;
}

/* Content Filter */
.content-filter { display:flex; flex-wrap:wrap; gap:4px; margin-bottom:32px; justify-content:center; }
.filter-btn {
    font-family:var(--font-b); font-size:12px; letter-spacing:1px;
    padding:8px 20px; background:transparent; border:1px solid var(--border);
    color:var(--t3); cursor:none; transition:all var(--fast);
}
.filter-btn:hover { border-color:var(--t4); color:var(--t1); }
.filter-btn.active { background:var(--blue); border-color:var(--blue); color:var(--bg-0); }

/* Content Grid */
.content-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(300px,1fr)); gap:16px; }

/* === PROFILE === */
.profile-section { padding-top:calc(var(--nav-h) + 80px); }
.profile-grid { display:grid; grid-template-columns:1fr 1fr; gap:32px; }
.profile-card { padding:40px; }
.profile-avatar-area { text-align:center; margin-bottom:32px; }
.avatar-frame-large { position:relative; width:140px; height:140px; margin:0 auto; border:1px solid var(--border); padding:4px; }
.avatar-display {
    width:100%; height:100%; display:flex; align-items:center; justify-content:center;
    background:var(--bg-2); overflow:hidden;
}
.avatar-display img { width:100%; height:100%; object-fit:cover; }
.avatar-letter { font-family:var(--font-d); font-size:48px; color:var(--blue); }
.avatar-corner { position:absolute; width:14px; height:14px; border-color:var(--purple); border-style:solid; border-width:0; }
.avatar-corner.tl{top:-2px;left:-2px;border-top-width:2px;border-left-width:2px}
.avatar-corner.tr{top:-2px;right:-2px;border-top-width:2px;border-right-width:2px}
.avatar-corner.bl{bottom:-2px;left:-2px;border-bottom-width:2px;border-left-width:2px}
.avatar-corner.br{bottom:-2px;right:-2px;border-bottom-width:2px;border-right-width:2px}
.avatar-edit-overlay {
    position:absolute; inset:4px; display:flex; flex-direction:column; align-items:center; justify-content:center;
    background:rgba(0,0,0,0.7); opacity:0; transition:opacity var(--fast); cursor:none; gap:6px;
}
.avatar-edit-overlay svg { width:28px; height:28px; color:var(--t2); }
.avatar-edit-overlay span { font-size:11px; color:var(--t2); letter-spacing:1px; }
.avatar-frame-large:hover .avatar-edit-overlay { opacity:1; }
.avatar-status-bar { margin-top:12px; display:flex; align-items:center; justify-content:center; gap:8px; font-family:var(--font-d); font-size:10px; letter-spacing:2px; color:var(--green); }
.status-dot { width:6px; height:6px; border-radius:50; display:inline-block; }
.status-dot.green { background:var(--green); animation:statusP 2s ease-in-out infinite; }
@keyframes statusP { 0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(0,255,136,.5)} 50%{opacity:.7;box-shadow:0 0 0 6px rgba(0,255,136,0)} }

/* Profile fields */
.profile-fields { display:flex; flex-direction:column; gap:20px; }
.pf-group { }
.pf-label { font-family:var(--font-d); font-size:9px; letter-spacing:3px; color:var(--t4); margin-bottom:8px; display:block; }
.pf-input-wrap { position:relative; }
.pf-input {
    width:100%; padding:12px 0; font-family:var(--font-b); font-size:15px;
    color:var(--t1); background:transparent; border:none; border-bottom:1px solid var(--border);
    outline:none; transition:border-color var(--fast);
}
.pf-input:focus { border-bottom-color:var(--purple); }
.pf-input::placeholder { color:var(--t4); }
.pf-input:disabled { color:var(--t3); cursor:not-allowed; }
.pf-textarea { resize:vertical; min-height:80px; }
.pf-line { position:absolute; bottom:0; left:0; width:0; height:1px; background:var(--purple); transition:width var(--med); }
.pf-input:focus ~ .pf-line { width:100%; }
.pf-badge { position:absolute; right:0; top:50%; transform:translateY(-50%); font-family:var(--font-d); font-size:9px; letter-spacing:2px; color:var(--green); padding:3px 10px; border:1px solid var(--green); }

/* Profile preview */
.profile-preview { padding:40px; display:flex; flex-direction:column; align-items:center; justify-content:center; }
.preview-header { margin-bottom:32px; display:flex; align-items:center; gap:12px; }
.preview-tag { font-family:var(--font-d); font-size:9px; letter-spacing:3px; padding:3px 10px; background:var(--purple); color:var(--bg-0); }
.preview-label { font-size:12px; color:var(--t4); letter-spacing:1px; }
.preview-card { text-align:center; }
.preview-avatar { width:80px; height:80px; border-radius:50%; margin:0 auto 16px; overflow:hidden; border:2px solid var(--purple); display:flex; align-items:center; justify-content:center; background:var(--bg-2); }
.preview-avatar img { width:100%; height:100%; object-fit:cover; }
.preview-avatar span { font-family:var(--font-d); font-size:28px; color:var(--purple); }
.preview-name { font-size:22px; font-weight:700; letter-spacing:2px; margin-bottom:8px; }
.preview-sig { font-size:13px; color:var(--t3); font-style:italic; margin-bottom:8px; max-width:280px; }
.preview-email { font-family:var(--font-m); font-size:11px; color:var(--t4); letter-spacing:1px; }
.preview-decoration { display:flex; align-items:center; gap:16px; margin-top:32px; }
.deco-line { flex:1; height:1px; background:linear-gradient(90deg,transparent,var(--border),transparent); }
.deco-dots { display:flex; gap:6px; }
.deco-dots span { width:4px; height:4px; border-radius:50%; background:var(--purple); opacity:.4; }

/* === SETTINGS === */
.settings-section { padding-top:calc(var(--nav-h) + 80px); }
.settings-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:20px; }
.settings-card { padding:28px; }
.settings-card.danger { border-color:rgba(255,68,85,0.2); }
.sc-header { display:flex; gap:16px; align-items:flex-start; margin-bottom:20px; }
.sc-icon { width:40px; height:40px; flex-shrink:0; }
.sc-icon svg { width:100%; height:100%; }
.sc-icon[data-color="purple"] { color:var(--purple); }
.sc-icon[data-color="cyan"] { color:var(--cyan); }
.sc-icon[data-color="orange"] { color:var(--orange); }
.sc-icon[data-color="red"] { color:var(--red); }
.sc-title { font-size:16px; font-weight:600; margin-bottom:4px; }
.sc-desc { font-size:12px; color:var(--t4); }
.sc-body { display:flex; flex-direction:column; gap:14px; }

/* Toggle */
.toggle-row { display:flex; justify-content:space-between; align-items:center; padding:4px 0; font-size:13px; color:var(--t2); }
.toggle-switch { position:relative; width:44px; height:22px; cursor:none; }
.toggle-switch input { opacity:0; width:0; height:0; }
.toggle-slider {
    position:absolute; inset:0; background:var(--bg-4);
    border:1px solid var(--border); transition:all var(--fast);
    border-radius:11px;
}
.toggle-slider::before {
    content:''; position:absolute; left:3px; top:3px;
    width:14px; height:14px; background:var(--t3);
    border-radius:50%; transition:all var(--fast);
}
.toggle-switch input:checked + .toggle-slider { background:var(--blue); border-color:var(--blue); }
.toggle-switch input:checked + .toggle-slider::before { transform:translateX(22px); background:var(--bg-0); }

/* BGM */
.bgm-upload-area { display:flex; align-items:center; gap:12px; }
.bgm-current { flex:1; }
.bgm-status { font-size:12px; color:var(--t4); }
.bgm-controls { gap:12px; }
.bgm-track { display:flex; align-items:center; gap:10px; }
.bgm-name { font-size:12px; color:var(--t2); white-space:nowrap; overflow:hidden; text-overflow:ellipsis; max-width:160px; }
.bgm-progress { flex:1; height:3px; background:var(--border); overflow:hidden; }
.bgm-progress-fill { height:100%; width:0; background:var(--purple); transition:width .3s; }
.bgm-btns { display:flex; align-items:center; gap:8px; margin-top:8px; }
.bgm-btn { width:32px; height:32px; display:flex; align-items:center; justify-content:center; background:none; border:1px solid var(--border); color:var(--t2); cursor:none; font-size:14px; transition:all var(--fast); }
.bgm-btn:hover { border-color:var(--purple); color:var(--purple); }
.bgm-volume { -webkit-appearance:none; appearance:none; width:80px; height:3px; background:var(--border); outline:none; cursor:none; }
.bgm-volume::-webkit-slider-thumb { -webkit-appearance:none; width:10px; height:10px; background:var(--purple); border-radius:50%; cursor:none; }

/* === BUTTONS === */
.btn {
    position:relative; display:inline-flex; align-items:center; gap:10px;
    padding:12px 28px; font-family:var(--font-b); font-size:13px; font-weight:500;
    letter-spacing:2px; border:none; cursor:none; overflow:hidden; transition:all var(--fast);
}
.btn-sm { padding:10px 20px; font-size:12px; }
.btn-accent { background:transparent; color:var(--t1); border:1px solid var(--blue); }
.btn-accent .btn-bg { position:absolute; inset:0; background:var(--blue); transform:translateX(-101%); transition:transform var(--med); z-index:0; }
.btn-accent:hover .btn-bg { transform:translateX(0); }
.btn-accent .btn-text,.btn-accent .btn-icon { position:relative; z-index:1; }
.btn-accent:hover { color:var(--bg-0); }
.btn-login { width:100%; justify-content:center; margin-top:8px; background:transparent; color:var(--t1); border:1px solid var(--blue); }
.btn-login .btn-bg { position:absolute; inset:0; background:linear-gradient(135deg,var(--blue),var(--purple)); transform:translateX(-101%); transition:transform var(--med); z-index:0; }
.btn-login:hover .btn-bg { transform:translateX(0); }
.btn-login .btn-text,.btn-login .btn-icon { position:relative; z-index:1; }
.btn-login:hover { color:#fff; }
.btn-ghost { background:transparent; color:var(--t3); border:1px solid var(--border); }
.btn-ghost:hover { border-color:var(--t3); color:var(--t1); }
.btn-danger { background:transparent; color:var(--red); border:1px solid var(--red); }
.btn-danger:hover { background:var(--red); color:#fff; }
.btn-icon { transition:transform var(--fast); }
.btn:hover .btn-icon { transform:translateX(4px); }

/* === FILE MODAL === */
.file-modal { position:fixed; inset:0; z-index:2000; opacity:0; pointer-events:none; transition:opacity var(--med); display:flex; align-items:center; justify-content:center; }
.file-modal.active { opacity:1; pointer-events:all; }
.file-modal-backdrop { position:absolute; inset:0; background:rgba(0,0,0,0.9); backdrop-filter:blur(20px); }
.file-modal-container { position:relative; width:90%; max-width:900px; max-height:85vh; background:var(--bg-1); border:1px solid var(--border); display:flex; flex-direction:column; }
.file-modal-header { display:flex; align-items:center; gap:12px; padding:14px 20px; border-bottom:1px solid var(--border); }
.fm-tag { font-family:var(--font-d); font-size:9px; letter-spacing:2px; color:var(--blue); padding:3px 8px; border:1px solid var(--blue); }
.fm-name { flex:1; font-size:13px; color:var(--t2); white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.fm-actions { display:flex; gap:6px; }
.fm-btn { width:32px; height:32px; display:flex; align-items:center; justify-content:center; background:none; border:1px solid var(--border); color:var(--t3); cursor:none; transition:all var(--fast); font-size:14px; }
.fm-btn:hover { border-color:var(--blue); color:var(--blue); }
.fm-close:hover { border-color:var(--red); color:var(--red); }
.file-modal-body { padding:24px; overflow-y:auto; flex:1; }
.fm-image { width:100%; max-height:60vh; object-fit:contain; }
.fm-video { width:100%; max-height:60vh; }
.fm-audio { width:100%; margin-top:20px; }
.fm-text { font-size:14px; line-height:1.8; color:var(--t2); white-space:pre-wrap; }
.fm-code { font-family:var(--font-m); font-size:13px; line-height:1.7; color:var(--cyan); white-space:pre; overflow-x:auto; background:var(--bg-0); padding:20px; border:1px solid var(--border); }

/* === TOAST === */
#toast-container { position:fixed; bottom:24px; right:24px; z-index:5000; display:flex; flex-direction:column; gap:8px; }
.toast {
    padding:14px 24px; background:rgba(12,12,18,0.9); backdrop-filter:blur(20px);
    border:1px solid var(--border); display:flex; align-items:center; gap:10px;
    font-size:13px; color:var(--t2); min-width:260px;
    animation:toastIn .3s ease;
}
.toast.success { border-left:3px solid var(--green); }
.toast.error { border-left:3px solid var(--red); }
.toast.info { border-left:3px solid var(--blue); }
.toast.out { animation:toastOut .3s ease forwards; }
@keyframes toastIn { from{transform:translateX(100%);opacity:0} to{transform:translateX(0);opacity:1} }
@keyframes toastOut { from{transform:translateX(0);opacity:1} to{transform:translateX(100%);opacity:0} }

/* === GLITCH === (已禁用) */
[data-glitch] { position:relative; }
[data-glitch]:hover::before,[data-glitch]:hover::after { display:none; }

/* === FOOTER === */
.site-footer { position:relative; z-index:1; padding:32px 48px; border-top:1px solid var(--border); }
.footer-inner { display:flex; justify-content:space-between; align-items:center; }
.footer-left { display:flex; flex-direction:column; gap:6px; }
.footer-logo { font-family:var(--font-d); font-size:11px; letter-spacing:3px; color:var(--t3); }
.footer-copy { font-size:11px; color:var(--t4); }
.footer-status { display:flex; align-items:center; gap:8px; font-family:var(--font-d); font-size:9px; letter-spacing:2px; color:var(--green); }
.footer-line { width:100%; height:1px; background:linear-gradient(90deg,transparent,var(--blue),var(--purple),transparent); margin-top:20px; opacity:.3; }

/* === RESPONSIVE === */
@media(max-width:1024px) {
    .dash-stats { grid-template-columns:repeat(2,1fr); }
    .profile-grid { grid-template-columns:1fr; }
    .settings-grid { grid-template-columns:1fr; }
}
@media(max-width:768px) {
    body { cursor:auto; }
    #cursor-dot,#cursor-ring { display:none; }
    .cursor-light { display:none; }
    .side-ind { display:none; }
    .nav-center { display:none; }
    .nav-menu-btn { display:flex; }
    .nav-time { display:none; }
    #main-nav { height:48px; padding:0 16px; }
    .nav-logo { font-size:14px !important; }
    .dash-name { font-size:28px; }
    .dash-hi { font-size:12px; }
    .dash-desc { font-size:12px; }
    .dash-stats { grid-template-columns:1fr 1fr; gap:8px; }
    .stat-card { padding:12px; }
    .section-title { font-size:24px; }
    .section-header { margin-bottom:30px; }
    .content-grid { grid-template-columns:1fr; }
    .login-frame { padding:24px 16px; width:90vw; max-width:360px; }
    .login-logo { font-size:24px !important; }
    .login-subtitle { font-size:10px; }

    /* ========== LOL皮肤选择器风格纵向轮播 ========== */
    .mobile-carousel {
        position: relative;
        width: 100%;
        height: 100vh;
        overflow: hidden;
        padding: 0;
        margin: 0;
    }

    /* 所有 section 绝对定位堆叠 */
    .mobile-carousel > .section {
        position: absolute !important;
        left: 5%;
        width: 90%;
        padding: 0 !important;
        margin: 0 !important;
        font-size: 14px;
        line-height: 1.6;
        /* JS 控制 top, transform, opacity, z-index */
        transition: top 0.45s cubic-bezier(0.23,1,0.32,1),
                    transform 0.45s cubic-bezier(0.23,1,0.32,1),
                    opacity 0.45s ease;
        will-change: top, transform, opacity;
    }

    /* 覆盖 font-size:0 */
    .mobile-carousel > .section * {
        font-size: revert;
    }

    /* 中心卡片的标题栏模拟悬停效果 */
    .mobile-carousel > .section.carousel-center .panel-title-bar {
        border-color: rgba(255,200,0,0.5);
        box-shadow: 0 0 15px rgba(255,200,0,0.15),
                    5px 0 0 #ffc800,
                    0 5px 0 #ffc800,
                    5px 5px 0 #ffc800,
                    -2px 0 0 rgba(0,0,0,0.8),
                    0 -2px 0 rgba(0,0,0,0.8);
    }

    /* 手机端 section-panel */
    .section-panel {
        width: 100% !important;
        margin: 0 auto !important;
        font-size: 14px !important;
    }

    .panel-title-bar {
        height: 52px;
        padding: 10px 14px;
        gap: 10px;
        transition: border-color 0.4s ease,
                    box-shadow 0.4s ease,
                    background 0.35s ease;
    }
    .panel-title { font-size: 14px; letter-spacing: 1px; }
    .panel-idx { font-size: 10px; width: 24px; }
    .section-panel.expanded .panel-title-bar { height: 56px; padding: 14px; }

    /* 禁用 PC 端悬停效果 */
    .panel-title-bar:hover {
        transform: none !important;
        box-shadow: 0 0 6px rgba(255,200,0,0.1),
                    inset 0 0 6px rgba(255,200,0,0.03);
    }
    .panel-title-bar::after { display:none; }

    /* 展开状态：全屏显示当前面板 */
    .mobile-carousel.has-expanded {
        overflow-y: auto;
    }
    .mobile-carousel.has-expanded > .section {
        position: relative !important;
        left: 0;
        width: 100%;
        top: auto !important;
        transform: none !important;
        opacity: 1 !important;
    }
    .mobile-carousel.has-expanded > .section:not(.section-expanded) {
        display: none !important;
    }
    .mobile-carousel.has-expanded > .section.section-expanded {
        display: block !important;
        z-index: 10 !important;
        padding-top: 100px !important;
    }

    /* 访客横幅 */
    .guest-banner { height:40px; padding:0 12px; font-size:12px; }
    body:not(.logged-in) #main-nav { top:40px; }

    /* 上传区域 */
    .quick-upload-zone { padding:24px 12px; }
    .upload-dropzone { padding:30px 12px; }
    .upload-tabs { flex-wrap:wrap; }
    .upload-tab { padding:10px 14px; font-size:11px; }

    /* 个人资料 */
    .profile-card { padding:16px; }
    .profile-grid { grid-template-columns: 1fr; }
    .avatar-frame-large { width:80px; height:80px; }
    .pf-group { margin-bottom:12px; }

    /* 设置 */
    .settings-card { padding:16px; }
    .settings-grid { grid-template-columns: 1fr; }
    .sc-header { gap:12px; }

    /* 文件预览弹窗 */
    .file-modal-container { width:95vw; max-height:90vh; }
    .file-modal-header { padding:12px 16px; }

    /* footer 在轮播模式下隐藏 */
    .site-footer { display: none; }

    /* 指示点 */
    .carousel-dots {
        display: flex;
        justify-content: center;
        gap: 8px;
        padding: 16px 0;
        position: fixed;
        bottom: 20px;
        left: 0;
        right: 0;
        z-index: 200;
    }
    .carousel-dot {
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: rgba(255,200,0,0.3);
        border: 1px solid rgba(255,200,0,0.5);
        transition: all 0.3s ease;
        cursor: pointer;
    }
    .carousel-dot.active {
        background: #ffc800;
        transform: scale(1.3);
        box-shadow: 0 0 8px rgba(255,200,0,0.5);
    }
}
@media(max-width:480px) {
    .dash-stats { grid-template-columns:1fr; }
    .panel-title-bar { height:48px; padding:8px 12px; }
    .panel-title { font-size:13px; }
    .section-panel.expanded .panel-title-bar { height:52px; }
    .section-inner { padding:12px 8px; }
    .guest-banner { height:36px; font-size:11px; }
    body:not(.logged-in) #main-nav { top:36px; }
}

/* 桌面端正常布局 */
@media(min-width:769px) {
    .carousel-dots { display: none !important; }
    .mobile-carousel {
        display: block;
    }
}

/* =========================================
   GUEST BANNER - 访客横幅
   ========================================= */
.guest-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 48px;
    background: linear-gradient(90deg, var(--blue-g) 0%, var(--purple-g) 100%);
    border-bottom: 1px solid var(--border-accent);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    z-index: 9999;
    backdrop-filter: blur(10px);
    font-size: 14px;
    color: var(--t1);
}

.guest-banner span {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
}

.guest-banner button {
    background: transparent;
    color: white;
    border: 1px solid rgba(255,255,255,0.3);
    width: 40px;
    height: 40px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    cursor: none;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.guest-banner button::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: conic-gradient(
        from 0deg,
        #ff0080, #ff8c00, #40e0d0,
        #1e90ff, #b44dff, #ff0080
    );
    border-radius: 50%;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s;
    animation: laserSpin 2s linear infinite;
}

.guest-banner button::after {
    content: '';
    position: absolute;
    inset: 2px;
    background: rgba(0,0,0,0.85);
    border-radius: 50%;
    z-index: -1;
}

.guest-banner button:hover {
    border-color: transparent;
    box-shadow: 0 0 25px rgba(30,144,255,0.4), 0 0 50px rgba(180,77,255,0.2);
    transform: scale(1.15);
}

.guest-banner button:hover::before {
    opacity: 1;
}

@keyframes laserSpin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.guest-banner button svg {
    position: relative;
    z-index: 1;
    filter: drop-shadow(0 0 4px rgba(30,144,255,0.6));
}

.guest-banner button:hover svg {
    filter: drop-shadow(0 0 8px rgba(0,229,255,0.8));
}

/* 访客模式下禁用上传区域 */
body:not(.logged-in) .upload-area,
body:not(.logged-in) .dash-quick-upload,
body:not(.logged-in) .profile-fields {
    opacity: 0.5;
    pointer-events: none;
    position: relative;
}

/* 访客模式下隐藏设置栏目 */
body:not(.logged-in) #settings {
    display: none !important;
}

/* 访客模式下隐藏导航栏中的设置链接 */
body:not(.logged-in) .nav-link[data-section="settings"] {
    display: none !important;
}

/* 访客模式下隐藏手机菜单中的设置链接 */
body:not(.logged-in) .mobile-link[data-section="settings"] {
    display: none !important;
}

body:not(.logged-in) .upload-area::after,
body:not(.logged-in) .dash-quick-upload::after,
body:not(.logged-in) .profile-fields::after {
    content: '🔒 需要登录才能使用此功能';
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0,0,0,0.7);
    color: var(--t1);
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius);
}

/* 登录状态下添加 logged-in 类 */
body.logged-in {
    /* 已登录样式 */
}

/* =========================================
   FLOW LINES - 流线动画效果
   ========================================= */
.flow-lines-container {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    overflow: hidden;
}

.flow-line {
    position: absolute;
    width: 200%;
    height: 1px;
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(30,144,255,0.3) 20%,
        rgba(0,229,255,0.5) 50%,
        rgba(180,77,255,0.3) 80%,
        transparent 100%
    );
    animation: flowMove 15s linear infinite;
}

.flow-line:nth-child(1) { top: 10%; animation-delay: 0s; animation-duration: 20s; }
.flow-line:nth-child(2) { top: 25%; animation-delay: -5s; animation-duration: 18s; }
.flow-line:nth-child(3) { top: 40%; animation-delay: -10s; animation-duration: 22s; }
.flow-line:nth-child(4) { top: 55%; animation-delay: -3s; animation-duration: 25s; }
.flow-line:nth-child(5) { top: 70%; animation-delay: -8s; animation-duration: 19s; }
.flow-line:nth-child(6) { top: 85%; animation-delay: -12s; animation-duration: 21s; }

@keyframes flowMove {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(50%); }
}

/* =========================================
   SLIDING PANELS - 滑块动画
   ========================================= */
.sliding-panels {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 2;
}

.sliding-panel {
    position: absolute;
    background: linear-gradient(135deg,
        rgba(30,144,255,0.03) 0%,
        rgba(0,229,255,0.02) 50%,
        rgba(180,77,255,0.03) 100%
    );
    border: 1px solid rgba(255,255,255,0.03);
    animation: slideFloat 12s ease-in-out infinite;
}

.sliding-panel:nth-child(1) {
    width: 300px; height: 200px;
    top: 10%; right: 10%;
    animation-delay: 0s;
}
.sliding-panel:nth-child(2) {
    width: 250px; height: 180px;
    top: 50%; left: 5%;
    animation-delay: -4s;
}
.sliding-panel:nth-child(3) {
    width: 200px; height: 150px;
    bottom: 20%; right: 25%;
    animation-delay: -8s;
}
.sliding-panel:nth-child(4) {
    width: 180px; height: 250px;
    bottom: 10%; left: 20%;
    animation-delay: -6s;
}

@keyframes slideFloat {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
        opacity: 0.3;
    }
    25% {
        transform: translate(30px, -20px) rotate(2deg);
        opacity: 0.5;
    }
    50% {
        transform: translate(50px, 0) rotate(0deg);
        opacity: 0.3;
    }
    75% {
        transform: translate(30px, 20px) rotate(-2deg);
        opacity: 0.5;
    }
}

/* =========================================
   GEOMETRIC SHAPES - 几何图形装饰
   ========================================= */
.geo-shapes {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 2;
}

.geo-shape {
    position: absolute;
    border: 1px solid rgba(255,255,255,0.05);
    animation: geoRotate 20s linear infinite;
}

.geo-shape.circle {
    border-radius: 50%;
}
.geo-shape.square {
    border-radius: 0;
}
.geo-shape.triangle {
    width: 0; height: 0;
    border: none;
    border-left: 60px solid transparent;
    border-right: 60px solid transparent;
    border-bottom: 100px solid rgba(30,144,255,0.05);
}

.geo-shape:nth-child(1) {
    width: 200px; height: 200px;
    top: 5%; right: 15%;
    animation-duration: 30s;
}
.geo-shape:nth-child(2) {
    width: 150px; height: 150px;
    top: 60%; left: 8%;
    animation-duration: 25s;
    animation-direction: reverse;
}
.geo-shape:nth-child(3) {
    width: 120px; height: 120px;
    bottom: 15%; right: 30%;
    animation-duration: 35s;
}
.geo-shape:nth-child(4) {
    width: 180px; height: 180px;
    bottom: 40%; left: 20%;
    animation-duration: 28s;
    animation-direction: reverse;
}
.geo-shape:nth-child(5) {
    bottom: 8%; left: 45%;
    animation-duration: 22s;
}

@keyframes geoRotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* =========================================
   DYNAMIC GRADIENT ORBS - 动态渐变球体
   ========================================= */
.gradient-orbs {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 1;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    animation: orbFloat 15s ease-in-out infinite;
    opacity: 0.15;
}

.gradient-orb:nth-child(1) {
    width: 400px; height: 400px;
    background: radial-gradient(circle, var(--blue) 0%, transparent 70%);
    top: 10%; left: 10%;
    animation-delay: 0s;
}
.gradient-orb:nth-child(2) {
    width: 350px; height: 350px;
    background: radial-gradient(circle, var(--purple) 0%, transparent 70%);
    top: 50%; right: 15%;
    animation-delay: -5s;
}
.gradient-orb:nth-child(3) {
    width: 300px; height: 300px;
    background: radial-gradient(circle, var(--cyan) 0%, transparent 70%);
    bottom: 20%; left: 30%;
    animation-delay: -10s;
}
.gradient-orb:nth-child(4) {
    width: 380px; height: 380px;
    background: radial-gradient(circle, var(--pink) 0%, transparent 70%);
    bottom: 10%; right: 25%;
    animation-delay: -3s;
}

@keyframes orbFloat {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(50px, -30px) scale(1.1);
    }
    66% {
        transform: translate(-30px, 40px) scale(0.9);
    }
}

/* =========================================
   GLOW RINGS - 发光环动画
   ========================================= */
.glow-rings {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 2;
}

.glow-ring {
    position: absolute;
    border: 1px solid;
    border-radius: 50%;
    opacity: 0;
    animation: ringPulse 6s ease-out infinite;
}

.glow-ring:nth-child(1) {
    top: 20%; left: 20%;
    width: 100px; height: 100px;
    border-color: var(--blue);
    animation-delay: 0s;
}
.glow-ring:nth-child(2) {
    top: 60%; right: 20%;
    width: 150px; height: 150px;
    border-color: var(--purple);
    animation-delay: 2s;
}
.glow-ring:nth-child(3) {
    bottom: 20%; left: 40%;
    width: 120px; height: 120px;
    border-color: var(--cyan);
    animation-delay: 4s;
}

@keyframes ringPulse {
    0% {
        transform: scale(0.5);
        opacity: 0.6;
    }
    100% {
        transform: scale(2);
        opacity: 0;
    }
}

/* =========================================
   DATA STREAM - 数据流效果
   ========================================= */
.data-stream {
    position: fixed;
    top: 0;
    width: 2px;
    background: linear-gradient(to bottom,
        transparent,
        var(--blue),
        var(--cyan),
        transparent
    );
    opacity: 0.3;
    animation: streamDrop 8s linear infinite;
    z-index: 1;
}

.data-stream:nth-child(1) { left: 5%; animation-delay: 0s; height: 60%; }
.data-stream:nth-child(2) { left: 15%; animation-delay: -2s; height: 50%; }
.data-stream:nth-child(3) { left: 25%; animation-delay: -4s; height: 70%; }
.data-stream:nth-child(4) { right: 25%; animation-delay: -1s; height: 55%; }
.data-stream:nth-child(5) { right: 15%; animation-delay: -3s; height: 45%; }
.data-stream:nth-child(6) { right: 5%; animation-delay: -5s; height: 65%; }

@keyframes streamDrop {
    0% {
        transform: translateY(-100%);
        opacity: 0;
    }
    10% {
        opacity: 0.3;
    }
    90% {
        opacity: 0.3;
    }
    100% {
        transform: translateY(100vh);
        opacity: 0;
    }
}

/* =========================================
   SECTION PANELS - 工业风折叠面板
   ========================================= */
.section-panel {
    position: relative;
    margin: 30px auto;
    border-radius: 8px;
    overflow: visible;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    max-width: 1100px;
    width: calc(100% - 80px);
    font-size: 14px;
    line-height: 1.6;
}

@media (max-width: 900px) {
    .section-panel { width: calc(100% - 24px); margin: 30px auto; }
}

@media (max-width: 600px) {
    .section-panel { width: calc(100% - 12px); margin: 24px auto; }
}

.section-panel.expanded {
    margin: 30px auto;
}

/* === 标题栏 - 黑底黄字 === */
.panel-title-bar {
    position: relative;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 24px;
    background: #0a0a0a;
    border: 2px solid rgba(255,200,0,0.2);
    border-radius: 6px;
    cursor: none;
    user-select: none;
    z-index: 10;
    overflow: visible;
    transition: border-color 0.3s ease 0.1s,
                box-shadow 0.3s ease 0.1s,
                transform 0.3s cubic-bezier(0.23, 1, 0.32, 1) 0.1s,
                background 0.35s ease;
    height: 64px;
    box-sizing: border-box;
    /* 常亮边框 */
    box-shadow: 0 0 6px rgba(255,200,0,0.1),
                inset 0 0 6px rgba(255,200,0,0.03);
}

/* 扫光 - 只覆盖边框区域（用 outline 模拟） */
.panel-title-bar::before {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: 8px;
    pointer-events: none;
    z-index: 20;
    overflow: hidden;
}

.panel-title-bar::after {
    content: '';
    position: absolute;
    top: -2px;
    bottom: -2px;
    left: -60%;
    width: 40%;
    pointer-events: none;
    z-index: 21;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(255,255,200,0.6) 45%,
        rgba(255,255,255,0.9) 50%,
        rgba(255,255,200,0.6) 55%,
        transparent 100%
    );
    /* 只在边框范围显示（用 clip-path 裁剪为边框形状） */
    mask: linear-gradient(#000 0 0) content-box exclude,
          linear-gradient(#000 0 0);
    mask-composite: exclude;
    -webkit-mask: linear-gradient(#000 0 0) content-box exclude,
                  linear-gradient(#000 0 0);
    -webkit-mask-composite: xor;
    padding: 2px;
    border-radius: 8px;
    transition: none;
}

.panel-title-bar:hover::after {
    animation: sweepBorder 0.5s ease-out 0.1s forwards;
}

@keyframes sweepBorder {
    0% { left: -40%; }
    100% { left: 110%; }
}

/* 悬停：拓展坞展开 - 下方+右侧扩张，上左留等比空隙 */
.panel-title-bar:hover {
    border-color: rgba(255,200,0,0.5);
    transform: scale(1.02);
    box-shadow: 0 0 15px rgba(255,200,0,0.15),
                /* 右侧 */
                5px 0 0 #ffc800,
                /* 下方 */
                0 5px 0 #ffc800,
                /* 右下角 */
                5px 5px 0 #ffc800,
                /* 左侧空隙（小负阴影留空） */
                -2px 0 0 rgba(0,0,0,0.8),
                /* 上方空隙 */
                0 -2px 0 rgba(0,0,0,0.8);
}

/* 展开时标题栏拉高匹配条纹 */
.section-panel.expanded .panel-title-bar {
    border-radius: 8px 8px 0 0;
    height: 80px;
    padding: 24px 24px;
    overflow: hidden;
}

.section-panel.expanded .panel-title-bar:hover {
    transform: scale(1.015);
    box-shadow: 0 0 20px rgba(255,200,0,0.2),
                0 8px 24px rgba(255,200,0,0.1),
                4px 0 0 #ffc800,
                -4px 0 0 #ffc800;
}

/* 序号 */
.panel-idx {
    font-family: 'Orbitron', monospace;
    font-size: 12px;
    font-weight: 700;
    color: #ffc800;
    opacity: 0.5;
    letter-spacing: 2px;
    flex-shrink: 0;
    width: 32px;
}

/* 标题 - 黑底黄字，可编辑 */
.panel-title {
    font-family: 'Rajdhani', 'Noto Sans SC', sans-serif;
    font-size: 16px;
    font-weight: 600;
    color: #ffc800;
    background: transparent;
    border: none;
    outline: none;
    margin: 0;
    padding: 6px 8px;
    line-height: 1.5;
    border-radius: 4px;
    letter-spacing: 3px;
    text-transform: uppercase;
    flex: 1;
    min-width: 0;
    transition: background 0.3s, color 0.3s;
    caret-color: #ffc800;
}

.panel-title:focus {
    background: rgba(255,200,0,0.1);
    box-shadow: 0 0 0 1px rgba(255,200,0,0.3);
}

/* 箭头 - 隐藏 */
.panel-arrow {
    display: none;
}

.section-panel.expanded .panel-arrow {
    transform: rotate(90deg);
    opacity: 1;
}

/* === 警示条纹容器 === */
.panel-hazard-line {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

/* 单根条纹 - 统一用 transform 控制位置 */
.hazard-stripe {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    width: 20px;
    background: #ffc800;
    transform: translateX(0) skewX(-25deg);
    opacity: 0;
    transition: transform 0.2s cubic-bezier(0.23, 1, 0.32, 1),
                width 0.15s cubic-bezier(0.23, 1, 0.32, 1),
                opacity 0.12s ease;
    will-change: transform, width, opacity;
    border-radius: 2px;
}

/* 落位压缩动画 */
.hazard-stripe.landing {
    animation: stripeLand 0.15s ease-out forwards;
}

@keyframes stripeLand {
    0% { transform: var(--land-transform) scaleX(1.3); }
    100% { transform: var(--land-transform) scaleX(1); }
}

/* 隐藏旧的 stack */
.panel-hazard-stack {
    display: none;
}

/* 悬停时文字置于顶层 */
.panel-title-bar .panel-idx,
.panel-title-bar .panel-title,
.panel-title-bar .panel-arrow {
    position: relative;
    z-index: 2;
}

/* 文字悬停无描边 */

/* === 面板体 - 折叠/展开 === */
.panel-body {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 0.6s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.4s ease 0.1s;
}

.section-panel.expanded .panel-body {
    max-height: 5000px;
    opacity: 1;
    overflow: visible;
}

/* === 展开状态 - 标题栏白色背景 === */
.section-panel.expanded .panel-title-bar {
    background: #ffffff;
    border-color: rgba(255,200,0,0.3);
    box-shadow: 0 0 10px rgba(255,200,0,0.15),
                0 4px 20px rgba(255,200,0,0.1);
}

.section-panel.expanded .panel-title-bar:hover {
    border-color: rgba(255,200,0,0.6);
}

.section-panel.expanded .panel-title-bar::after {
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(255,200,0,0.4) 45%,
        rgba(255,220,0,0.7) 50%,
        rgba(255,200,0,0.4) 55%,
        transparent 100%
    );
}

.section-panel.expanded .panel-idx {
    color: #0a0a0a;
    opacity: 0.4;
}

.section-panel.expanded .panel-title {
    color: #0a0a0a;
    caret-color: #0a0a0a;
}

.section-panel.expanded .panel-title:focus {
    background: rgba(0,0,0,0.05);
    box-shadow: 0 0 0 1px rgba(0,0,0,0.15);
}

.section-panel.expanded .panel-arrow {
    color: #0a0a0a;
}

/* 展开状态的警示条纹 */
.section-panel.expanded .hazard-stripe {
    background: #ffc800;
}

/* 展开后的内容区域样式 */
.section-panel.expanded .section-inner {
    background: rgba(18,18,26,0.95);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border: 1px solid rgba(255,255,255,0.08);
    border-top: none;
    border-radius: 0 0 8px 8px;
    margin-top: -1px;
    min-height: 70vh;
}

/* =========================================
   CARD ENHANCEMENTS - 卡片增强效果
   ========================================= */
.glass-card {
    background: rgba(12,12,18,0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius);
    position: relative;
    overflow: hidden;
    transition: border-color var(--med), box-shadow var(--med), transform var(--med);
}

.glass-card::before {
    content:'';
    position:absolute; top:0; left:0; right:0; height:1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
}

.glass-card::after {
    content:'';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle,
        rgba(255,255,255,0.03) 0%,
        transparent 50%
    );
    opacity: 0;
    transition: opacity var(--slow);
}

.glass-card:hover {
    border-color: rgba(255,255,255,0.12);
    box-shadow: 0 8px 40px rgba(0,0,0,0.4), 0 0 20px var(--blue-g);
    transform: translateY(-2px);
}

.glass-card:hover::after {
    opacity: 1;
}

/* 鼠标跟随发光效果 */
.glass-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: radial-gradient(
        600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
        rgba(255,255,255,0.06),
        transparent 40%
    );
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
    z-index: 1;
}

.glass-card:hover::before {
    opacity: 1;
}

/* 为不同卡片添加颜色变体 */
.glass-card[data-color="blue"]::after { background: radial-gradient(circle, rgba(30,144,255,0.08) 0%, transparent 50%); }
.glass-card[data-color="purple"]::after { background: radial-gradient(circle, rgba(180,77,255,0.08) 0%, transparent 50%); }
.glass-card[data-color="cyan"]::after { background: radial-gradient(circle, rgba(0,229,255,0.08) 0%, transparent 50%); }
.glass-card[data-color="orange"]::after { background: radial-gradient(circle, rgba(255,107,53,0.08) 0%, transparent 50%); }
.glass-card[data-color="pink"]::after { background: radial-gradient(circle, rgba(255,61,142,0.08) 0%, transparent 50%); }
.glass-card[data-color="green"]::after { background: radial-gradient(circle, rgba(0,255,136,0.08) 0%, transparent 50%); }

.glass-card.danger:hover {
    border-color: rgba(255,68,85,0.3);
    box-shadow: 0 8px 40px rgba(0,0,0,0.4), 0 0 20px var(--red-g);
}

/* =========================================
   CLICK RIPPLE - 点击波纹
   ========================================= */
.click-ripple {
    position: fixed;
    border-radius: 50%;
    pointer-events: none;
    z-index: 99999;
    border: 1px solid rgba(255,200,0,0.6);
    animation: rippleExpand 0.5s ease-out forwards;
}

.click-ripple::before {
    content: '';
    position: absolute;
    inset: 4px;
    border-radius: 50%;
    border: 0.5px solid rgba(0,229,255,0.4);
    animation: rippleExpand2 0.5s ease-out 0.05s forwards;
}

@keyframes rippleExpand {
    0% {
        width: 0; height: 0;
        opacity: 1;
        transform: translate(-50%, -50%);
    }
    100% {
        width: 50px; height: 50px;
        opacity: 0;
        transform: translate(-50%, -50%);
    }
}

@keyframes rippleExpand2 {
    0% {
        opacity: 0.8;
        transform: scale(0.3);
    }
    100% {
        opacity: 0;
        transform: scale(1.5);
    }
}

/* =========================================
   MECH LATCH - 已移除
   ========================================= */
.mech-latch, .mech-latch-top, .mech-latch-bottom { display: none !important; }