/* ============================================
   溪流Ai — 科技赛博风格 UI v2
   ============================================ */

/* === CSS Variables === */
:root {
    --primary: #00e5ff;
    --primary-glow: rgba(0,229,255,0.3);
    --primary-dim: rgba(0,229,255,0.07);
    --accent: #a855f7;
    --accent-glow: rgba(168,85,247,0.3);
    --bg: #040810;
    --bg-card: rgba(8,16,32,0.75);
    --bg-card-solid: #081020;
    --bg-nav: rgba(4,8,16,0.88);
    --text: #e0e8f0;
    --text-secondary: #7b8fa6;
    --text-muted: #4a5e74;
    --border: rgba(0,229,255,0.1);
    --border-glow: rgba(0,229,255,0.18);
    --shadow: 0 1px 4px rgba(0,0,0,.4);
    --shadow-md: 0 4px 16px rgba(0,0,0,.5);
    --shadow-lg: 0 12px 32px rgba(0,0,0,.6);
    --shadow-glow: 0 0 24px rgba(0,229,255,0.08);
    --radius: 8px;
    --radius-sm: 6px;
    --radius-lg: 12px;
    --radius-xl: 20px;
    --transition: 0.2s ease;
    --font: "Inter","Segoe UI","Microsoft YaHei","PingFang SC",sans-serif;
    --gradient: linear-gradient(135deg, #00e5ff 0%, #a855f7 100%);
    --gradient-hover: linear-gradient(135deg, #4df0ff 0%, #c084fc 100%);
    --danger: #ff4470;
    --success: #00e676;
    --warning: #ffab00;
    --info: #3b82f6;
}

/* === Light Theme === */
[data-theme="light"] {
    --bg: #f1f5f9;
    --bg-card: rgba(255,255,255,0.85);
    --bg-card-solid: #ffffff;
    --bg-nav: rgba(255,255,255,0.88);
    --text: #1e293b;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --border: rgba(203,213,225,0.7);
    --border-glow: rgba(14,165,233,0.15);
    --shadow: 0 1px 4px rgba(0,0,0,.06);
    --shadow-md: 0 4px 16px rgba(0,0,0,.08);
    --shadow-lg: 0 12px 40px rgba(0,0,0,.1);
    --shadow-glow: 0 0 20px rgba(0,229,255,0.05);
}

/* === Reset & Base === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
    font-family:var(--font);
    background:var(--bg);
    color:var(--text);
    line-height:1.65;
    min-height:100vh;
    transition:background var(--transition),color var(--transition);
    -webkit-font-smoothing:antialiased;
    -moz-osx-font-smoothing:grayscale;
}

/* 科技网格背景 */
body::before {
    content:'';
    position:fixed;inset:0;z-index:-1;pointer-events:none;
    background-image:
        linear-gradient(rgba(0,229,255,0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,229,255,0.025) 1px, transparent 1px);
    background-size: 60px 60px;
}
/* 数据流扫描线动画 */
body::after {
    content:'';
    position:fixed;inset:0;z-index:-1;pointer-events:none;
    background:repeating-linear-gradient(
        0deg,
        transparent, transparent 2px,
        rgba(0,229,255,0.008) 2px, rgba(0,229,255,0.008) 4px
    );
    animation:scanline 8s linear infinite;
}
@keyframes scanline {
    0%{transform:translateY(0)}100%{transform:translateY(4px)}
}
[data-theme="light"] body::before { background-image: none; }
[data-theme="light"] body::after { display:none; }

a{color:var(--primary);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--accent)}
img{max-width:100%;display:block}
button{cursor:pointer;font-family:inherit}
input,textarea,select{font-family:inherit;font-size:inherit}

/* === Navigation === */
.nav{
    position:sticky;top:0;z-index:100;
    background:var(--bg-nav);
    backdrop-filter:blur(20px) saturate(180%);
    -webkit-backdrop-filter:blur(20px) saturate(180%);
    border-bottom:1px solid var(--border);
    padding:0 5%;
    transition:all var(--transition);
}
.nav-inner{
    max-width:1280px;margin:0 auto;
    display:flex;align-items:center;gap:8px;height:60px;
}
.nav-brand{
    display:flex;align-items:center;gap:8px;
    font-size:18px;font-weight:800;color:var(--primary);
    white-space:nowrap;letter-spacing:.5px;
    text-shadow:0 0 20px var(--primary-glow);
}
.nav-links{display:flex;gap:2px;margin-left:24px;flex:1}
.nav-link{
    padding:8px 16px;border-radius:var(--radius-sm);
    color:var(--text-secondary);font-size:14px;font-weight:500;
    transition:all var(--transition);position:relative;
}
.nav-link::after{
    content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);
    width:0;height:2px;background:var(--gradient);border-radius:1px;
    transition:width var(--transition);
}
.nav-link:hover,.nav-link.active{color:var(--primary)}
.nav-link:hover::after,.nav-link.active::after{width:calc(100% - 16px)}
.nav-actions{display:flex;align-items:center;gap:8px;margin-left:auto}
.nav-btn{
    padding:7px 18px;border-radius:var(--radius-sm);font-size:13px;font-weight:600;
    border:1px solid transparent;transition:all var(--transition);background:none;
    color:var(--text-secondary);
}
.nav-login{
    color:var(--primary);border-color:var(--primary);
    box-shadow:0 0 12px var(--primary-glow);
}
.nav-login:hover{background:var(--primary);color:#000;box-shadow:0 0 24px var(--primary-glow)}
.nav-register{
    background:var(--gradient);color:#fff;border:none;
    box-shadow:0 0 16px var(--primary-glow);
}
.nav-register:hover{box-shadow:0 0 28px var(--primary-glow);transform:translateY(-1px)}
.nav-logout{color:var(--text-muted);font-size:13px}
.nav-admin{
    background:linear-gradient(135deg,var(--accent),#6366f1);
    color:#fff;font-size:13px;padding:6px 14px;border-radius:var(--radius-sm);
    box-shadow:0 0 14px var(--accent-glow);
}
.points-badge{
    background:linear-gradient(135deg,#ffab00,#ff6d00);color:#000;
    padding:3px 12px;border-radius:20px;font-size:12px;font-weight:700;
    margin-left:4px;box-shadow:0 0 10px rgba(255,171,0,.3);
}
.theme-icon{font-size:16px}

/* === Page Structure === */
.page{padding:32px 5%;max-width:1280px;margin:0 auto}

/* === Auth Pages === */
.auth-page{
    display:flex;min-height:100vh;align-items:center;justify-content:center;
    background:var(--bg);
}
.auth-card{
    background:var(--bg-card);border-radius:var(--radius-xl);
    padding:44px;width:100%;max-width:440px;
    box-shadow:var(--shadow-lg),var(--shadow-glow);
    border:1px solid var(--border-glow);
    backdrop-filter:blur(10px);
}
.auth-card h2{
    font-size:26px;margin-bottom:4px;text-align:center;
    background:var(--gradient);-webkit-background-clip:text;
    -webkit-text-fill-color:transparent;background-clip:text;
    font-weight:800;
}
.auth-card .subtitle{color:var(--text-secondary);text-align:center;margin-bottom:28px;font-size:14px}
.auth-card .form-group{margin-bottom:18px}
.auth-card label{display:block;font-weight:600;margin-bottom:6px;font-size:14px;color:var(--text-secondary)}
.auth-card .input{
    width:100%;padding:12px 16px;border:1px solid var(--border);
    border-radius:var(--radius);font-size:15px;transition:all var(--transition);
    background:var(--bg);color:var(--text);
}
.auth-card .input:focus{
    outline:none;border-color:var(--primary);
    box-shadow:0 0 0 3px var(--primary-dim),0 0 12px var(--primary-glow);
}
.auth-card .btn{
    width:100%;padding:14px;background:var(--gradient);color:#fff;
    border:none;border-radius:var(--radius);font-size:16px;font-weight:700;
    transition:all var(--transition);box-shadow:0 0 20px var(--primary-glow);
    letter-spacing:.5px;
}
.auth-card .btn:hover{box-shadow:0 0 36px var(--primary-glow);transform:translateY(-1px)}
.auth-card .btn:disabled{opacity:.5;cursor:not-allowed;transform:none}
.auth-card .foot-text{text-align:center;margin-top:20px;color:var(--text-secondary);font-size:14px}
.auth-card .foot-text a{color:var(--primary);font-weight:600}

/* === Cards === */
.card{
    background:var(--bg-card);border-radius:var(--radius-lg);
    padding:24px;box-shadow:var(--shadow);border:1px solid var(--border);
    transition:all var(--transition);
    backdrop-filter:blur(8px);
}
.card:hover{box-shadow:var(--shadow-md),0 0 24px var(--primary-glow);border-color:var(--border-glow)}

/* === Buttons === */
.btn{
    display:inline-flex;align-items:center;justify-content:center;gap:6px;
    padding:10px 24px;border-radius:var(--radius);font-weight:600;
    border:1px solid transparent;transition:all var(--transition);font-size:14px;
    letter-spacing:.3px;
}
.btn-primary{
    background:var(--gradient);color:#fff;
    box-shadow:0 0 16px var(--primary-glow);
}
.btn-primary:hover{box-shadow:0 0 28px var(--primary-glow);transform:translateY(-1px)}
.btn-outline{border-color:var(--border);color:var(--text-secondary)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);box-shadow:0 0 12px var(--primary-glow)}
.btn-danger{background:var(--danger);color:#fff;box-shadow:0 0 14px rgba(255,68,112,.3)}
.btn-danger:hover{box-shadow:0 0 24px rgba(255,68,112,.5)}
.btn-success{background:var(--success);color:#000;box-shadow:0 0 14px rgba(0,230,118,.3)}
.btn-success:hover{box-shadow:0 0 24px rgba(0,230,118,.5)}
.btn-sm{padding:6px 14px;font-size:13px}

/* === Status Messages === */
.alert{
    padding:12px 16px;border-radius:var(--radius);margin-bottom:16px;
    font-size:14px;line-height:1.5;border:1px solid;
}
.alert-error{background:rgba(255,68,112,.1);border-color:rgba(255,68,112,.3);color:#ff4470}
.alert-success{background:rgba(0,230,118,.1);border-color:rgba(0,230,118,.3);color:#00e676}
.alert-info{background:rgba(0,229,255,.08);border-color:rgba(0,229,255,.2);color:#00e5ff}

/* === Grid Layouts === */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}

/* === Stats Card === */
.stat-card{
    background:var(--bg-card);border-radius:var(--radius-lg);
    padding:20px 24px;box-shadow:var(--shadow);
    border:1px solid var(--border);position:relative;overflow:hidden;
    transition:all var(--transition);
}
.stat-card::before{
    content:'';position:absolute;top:0;left:0;right:0;height:3px;
    background:var(--gradient);opacity:.7;
}
.stat-card:hover{box-shadow:var(--shadow-md),0 0 24px var(--primary-glow)}
.stat-card .stat-label{
    color:var(--text-muted);font-size:12px;font-weight:600;
    text-transform:uppercase;letter-spacing:1px;
}
.stat-card .stat-value{
    font-size:36px;font-weight:800;margin:6px 0;
    background:var(--gradient);-webkit-background-clip:text;
    -webkit-text-fill-color:transparent;background-clip:text;
    letter-spacing:-1px;
}
.stat-card .stat-desc{color:var(--text-secondary);font-size:13px}

/* === Table === */
.table-wrap{overflow-x:auto;border-radius:var(--radius-lg);border:1px solid var(--border)}
table{width:100%;border-collapse:collapse;font-size:14px}
thead th{
    text-align:left;padding:14px 16px;font-weight:700;color:var(--primary);
    border-bottom:1px solid var(--border-glow);white-space:nowrap;
    font-size:12px;text-transform:uppercase;letter-spacing:.8px;
    background:var(--bg-card);
}
tbody td{padding:12px 16px;border-bottom:1px solid rgba(51,65,85,.3);vertical-align:middle}
tbody tr{transition:all var(--transition)}
tbody tr:hover{background:var(--primary-dim)}

/* === Badge === */
.badge{
    display:inline-block;padding:3px 12px;border-radius:20px;
    font-size:11px;font-weight:700;letter-spacing:.5px;
    text-transform:uppercase;
}
.badge-success{background:rgba(0,230,118,.15);color:#00e676;border:1px solid rgba(0,230,118,.3)}
.badge-danger{background:rgba(255,68,112,.15);color:#ff4470;border:1px solid rgba(255,68,112,.3)}
.badge-warning{background:rgba(255,171,0,.15);color:#ffab00;border:1px solid rgba(255,171,0,.3)}
.badge-info{background:rgba(68,138,255,.15);color:#448aff;border:1px solid rgba(68,138,255,.3)}
.badge-dark{background:rgba(148,163,184,.1);color:var(--text-secondary);border:1px solid var(--border)}

/* === Form Inputs === */
.input,.textarea,.select{
    padding:10px 14px;border:1px solid var(--border);
    border-radius:var(--radius);background:var(--bg);
    color:var(--text);font-size:14px;transition:all var(--transition);
}
.input:focus,.textarea:focus,.select:focus{
    outline:none;border-color:var(--primary);
    box-shadow:0 0 0 3px var(--primary-dim),0 0 16px var(--primary-glow);
}
.textarea{resize:vertical;min-height:100px}
.select{appearance:none;padding-right:32px;
    background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2394a3b8'%3E%3Cpath d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat:no-repeat;background-position:right 12px center;
}

/* === Pagination === */
.pagination{display:flex;justify-content:center;gap:4px;margin-top:24px}
.pagination a,.pagination span{
    padding:8px 14px;border-radius:var(--radius-sm);font-size:14px;
    border:1px solid var(--border);color:var(--text-secondary);
    transition:all var(--transition);
}
.pagination a:hover{background:var(--primary);color:#000;border-color:var(--primary);box-shadow:0 0 12px var(--primary-glow)}
.pagination .active{background:var(--primary);color:#000;border-color:var(--primary);box-shadow:0 0 14px var(--primary-glow);font-weight:700}

/* === Section Title === */
.section-title{
    font-size:24px;font-weight:800;margin-bottom:24px;
    display:flex;align-items:center;gap:12px;letter-spacing:.5px;
}
.section-title::before{
    content:'';display:inline-block;width:5px;height:28px;
    background:var(--gradient);border-radius:3px;
    box-shadow:0 0 12px var(--primary-glow);
}

/* === Announcement Bar === */
.announce-bar{
    background:linear-gradient(135deg,rgba(255,171,0,.15),rgba(255,109,0,.1));
    color:#ffab00;padding:10px 5%;text-align:center;
    font-size:14px;overflow:hidden;position:relative;
    border-bottom:1px solid rgba(255,171,0,.2);
}
.announce-bar .marquee{display:inline-block;animation:marquee 20s linear infinite;white-space:nowrap}
@keyframes marquee{0%{transform:translateX(100%)}100%{transform:translateX(-100%)}}

/* === Chat Page === */
.chat-layout{display:grid;grid-template-columns:260px 1fr;gap:0;height:calc(100vh - 61px)}
.chat-sidebar{
    background:var(--bg-card-solid);border-right:1px solid var(--border);
    display:flex;flex-direction:column;overflow:hidden;
}
.chat-sidebar-header{
    padding:16px;border-bottom:1px solid var(--border);
    display:flex;justify-content:space-between;align-items:center;
}
.conv-list{flex:1;overflow-y:auto;padding:8px}
.conv-item{
    padding:12px;border-radius:var(--radius);cursor:pointer;font-size:14px;
    transition:all var(--transition);margin-bottom:2px;
    color:var(--text-secondary);display:flex;justify-content:space-between;align-items:center;
    border:1px solid transparent;
}
.conv-item:hover,.conv-item.active{
    background:var(--primary-dim);color:var(--text);
    border-color:var(--border-glow);
}
.conv-del{opacity:0;color:var(--danger);font-size:18px;line-height:1;transition:opacity var(--transition)}
.conv-item:hover .conv-del{opacity:1}
.chat-main{display:flex;flex-direction:column;overflow:hidden}
.chat-header{padding:16px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:12px}
.chat-messages{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:16px}
.chat-msg{display:flex;gap:10px;max-width:85%}
.chat-msg.user{flex-direction:row-reverse;align-self:flex-end}
.chat-msg .msg-avatar{
    width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;
    font-size:16px;flex-shrink:0;
}
.chat-msg.user .msg-avatar{background:var(--gradient);color:#fff}
.chat-msg.assistant .msg-avatar{background:linear-gradient(135deg,var(--accent),#f472b6);color:#fff}
.chat-msg .msg-bubble{
    padding:12px 16px;border-radius:var(--radius-lg);font-size:14px;line-height:1.7;
    white-space:pre-wrap;word-break:break-word;
}
.chat-msg.user .msg-bubble{
    background:var(--gradient);color:#fff;
    border-bottom-right-radius:4px;box-shadow:0 2px 12px var(--primary-glow);
}
.chat-msg.assistant .msg-bubble{
    background:var(--bg-card);border:1px solid var(--border);
    border-bottom-left-radius:4px;
}
.chat-input-wrap{padding:16px;border-top:1px solid var(--border);display:flex;gap:8px}
.chat-input-wrap textarea{flex:1;min-height:44px;max-height:150px}
.chat-typing .dot-flash{display:inline-flex;gap:4px;padding:4px 0}
.chat-typing .dot-flash span{width:6px;height:6px;background:var(--primary);border-radius:50%;animation:dotBounce 1.4s infinite both}
.chat-typing .dot-flash span:nth-child(2){animation-delay:.2s}
.chat-typing .dot-flash span:nth-child(3){animation-delay:.4s}
@keyframes dotBounce{0%,80%,100%{transform:scale(.6);opacity:.3}40%{transform:scale(1);opacity:1}}

/* === Inspiration Gallery === */
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.gallery-card{
    background:var(--bg-card);border-radius:var(--radius-lg);
    overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--border);
    transition:all var(--transition);backdrop-filter:blur(8px);
}
.gallery-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg),0 0 20px var(--primary-glow);border-color:var(--border-glow)}
.gallery-card img{width:100%;aspect-ratio:1;object-fit:cover}
.gallery-card .gallery-info{padding:14px}
.gallery-card .prompt-text{font-size:13px;color:var(--text-secondary);line-height:1.5;max-height:60px;overflow:hidden}
.gallery-card .gallery-actions{display:flex;gap:8px;margin-top:10px;align-items:center}
.gallery-card .like-btn,.gallery-card .copy-btn{
    padding:5px 12px;border-radius:var(--radius-sm);font-size:12px;border:1px solid var(--border);
    background:var(--bg-card);color:var(--text-secondary);transition:all var(--transition);
}
.gallery-card .like-btn:hover,.gallery-card .like-btn.liked{color:var(--danger);border-color:var(--danger);box-shadow:0 0 10px rgba(255,68,112,.3)}
.gallery-card .copy-btn:hover{color:var(--primary);border-color:var(--primary);box-shadow:0 0 10px var(--primary-glow)}

/* === Profile Page === */
.profile-layout{display:grid;grid-template-columns:220px 1fr;gap:24px}
.profile-nav{display:flex;flex-direction:column;gap:2px}
.profile-nav a{
    padding:12px 16px;border-radius:var(--radius-sm);font-size:14px;
    color:var(--text-secondary);transition:all var(--transition);
    border:1px solid transparent;
}
.profile-nav a:hover,.profile-nav a.active{
    background:var(--primary-dim);color:var(--primary);
    border-color:var(--border-glow);
}
.profile-info .info-row{display:flex;justify-content:space-between;align-items:center;padding:14px 0;border-bottom:1px solid var(--border)}
.profile-info .info-label{color:var(--text-muted);font-size:14px}
.profile-info .info-value{font-weight:600;color:var(--primary);font-size:14px}

/* === Admin Layout === */
.admin-layout{display:grid;grid-template-columns:220px 1fr;gap:0;min-height:calc(100vh - 61px)}
.admin-sidebar{
    background:var(--bg-card-solid);border-right:1px solid var(--border);
    padding:16px 0;display:flex;flex-direction:column;gap:2px;
}
.admin-sidebar a{
    padding:12px 24px;font-size:14px;color:var(--text-secondary);
    transition:all var(--transition);border-left:3px solid transparent;
}
.admin-sidebar a:hover,.admin-sidebar a.active{
    background:var(--primary-dim);color:var(--primary);border-left-color:var(--primary);
}
.admin-content{padding:24px}

/* === Chart Bars === */
.chart-bar{display:flex;align-items:end;gap:8px;height:200px;padding-top:10px}
.chart-bar .bar-col{flex:1;display:flex;flex-direction:column;align-items:center;height:100%;justify-content:end}
.chart-bar .bar-fill{
    width:100%;max-width:60px;background:var(--gradient);border-radius:4px 4px 0 0;
    transition:height .6s cubic-bezier(0.4,0,0.2,1);min-height:4px;
    box-shadow:0 0 12px var(--primary-glow);
}
.chart-bar .bar-label{font-size:11px;color:var(--text-muted);margin-top:6px;text-align:center;word-break:break-all;font-weight:600}

/* === Rank List === */
.rank-list{list-style:none}
.rank-list li{
    display:flex;align-items:center;gap:12px;padding:10px 0;
    border-bottom:1px solid var(--border);transition:all var(--transition);
}
.rank-list li:hover{background:var(--primary-dim);padding-left:8px;border-radius:var(--radius-sm)}
.rank-list .rank-num{width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:13px;flex-shrink:0}
.rank-list .rank-num.gold{background:linear-gradient(135deg,#ffd700,#ffab00);color:#000}
.rank-list .rank-num.silver{background:linear-gradient(135deg,#c0c0c0,#94a3b8);color:#000}
.rank-list .rank-num.bronze{background:linear-gradient(135deg,#cd7f32,#f97316);color:#000}
.rank-list .rank-info{flex:1}.rank-list .rank-name{font-weight:600}
.rank-list .rank-value{font-size:13px;font-weight:700;color:var(--primary)}

/* === Model Selector === */
.model-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px}
.model-card{
    padding:16px;border-radius:var(--radius);border:1px solid var(--border);
    cursor:pointer;transition:all var(--transition);text-align:center;
    background:var(--bg-card);position:relative;overflow:hidden;
}
.model-card::before{
    content:'';position:absolute;inset:0;background:var(--gradient);opacity:0;
    transition:opacity var(--transition);z-index:0;
}
.model-card:hover{border-color:var(--primary);box-shadow:0 0 20px var(--primary-glow)}
.model-card:hover::before{opacity:.04}
.model-card.selected{
    border-color:var(--primary);box-shadow:0 0 24px var(--primary-glow);
    background:var(--primary-dim);
}
.model-card.selected::before{opacity:.06}
.model-card .model-name{font-weight:700;font-size:15px;position:relative;z-index:1}
.model-card .model-type{font-size:12px;color:var(--text-muted);text-transform:uppercase;font-weight:600;letter-spacing:1px;position:relative;z-index:1}
.model-card .model-cost{font-size:13px;color:var(--primary);margin-top:4px;font-weight:700;position:relative;z-index:1}

/* === Modal === */
.modal-overlay{
    position:fixed;inset:0;background:rgba(0,0,0,.7);z-index:200;
    display:flex;align-items:center;justify-content:center;
    animation:fadeIn .2s ease;backdrop-filter:blur(4px);
}
.modal{
    background:var(--bg-card-solid);border-radius:var(--radius-xl);padding:32px;
    max-width:480px;width:90%;box-shadow:var(--shadow-lg),0 0 40px var(--primary-glow);
    animation:slideUp .3s ease;border:1px solid var(--border-glow);
}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes slideUp{from{opacity:0;transform:translateY(20px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}

/* === Toast === */
.toast{position:fixed;bottom:24px;right:24px;z-index:300;animation:slideUp .3s ease}
.toast-inner{
    padding:14px 20px;border-radius:var(--radius);color:#fff;
    font-size:14px;font-weight:600;box-shadow:var(--shadow-lg);
    backdrop-filter:blur(8px);
}
.toast-success .toast-inner{background:rgba(0,230,118,.9);box-shadow:0 4px 20px rgba(0,230,118,.4)}
.toast-error .toast-inner{background:rgba(255,68,112,.9);box-shadow:0 4px 20px rgba(255,68,112,.4)}

/* === Loading Spinner === */
.spinner{
    width:28px;height:28px;
    border:3px solid var(--border);
    border-top-color:var(--primary);
    border-radius:50%;animation:spin .7s linear infinite;display:inline-block;
    box-shadow:0 0 12px var(--primary-glow);
}
@keyframes spin{to{transform:rotate(360deg)}}

/* === Search Box === */
.search-box{display:flex;gap:8px;margin-bottom:20px}
.search-box input{
    flex:1;padding:10px 16px;border:1px solid var(--border);
    border-radius:var(--radius);font-size:14px;
    background:var(--bg);color:var(--text);transition:all var(--transition);
}
.search-box input:focus{
    outline:none;border-color:var(--primary);
    box-shadow:0 0 0 3px var(--primary-dim),0 0 16px var(--primary-glow);
}

/* === Tabs === */
.tabs{display:flex;gap:0;border-bottom:1px solid var(--border);margin-bottom:20px}
.tab-btn{
    padding:10px 24px;border:none;background:none;font-size:14px;font-weight:600;
    color:var(--text-secondary);cursor:pointer;
    border-bottom:2px solid transparent;margin-bottom:-1px;
    transition:all var(--transition);position:relative;
}
.tab-btn:hover{color:var(--primary)}
.tab-btn.active{color:var(--primary);border-bottom-color:var(--primary)}
.tab-btn.active::after{
    content:'';position:absolute;bottom:-1px;left:50%;transform:translateX(-50%);
    width:60%;height:2px;background:var(--primary);
    box-shadow:0 0 10px var(--primary-glow);
}

/* === Hamburger Menu === */
.nav-hamburger{
    display:none;
    background:none;border:none;font-size:22px;color:var(--text);
    padding:4px;cursor:pointer;line-height:1;
}
.admin-menu-btn{display:none}

/* ============================================
   Responsive
   ============================================ */
@media(max-width:1024px){
    .nav-hamburger{display:block}
    .nav-links{display:none;flex-direction:column;position:absolute;top:60px;left:0;right:0;
        background:var(--bg-nav);backdrop-filter:blur(20px);
        border-bottom:1px solid var(--border);padding:8px 5%;z-index:99;gap:0}
    .nav-links.show-nav{display:flex}
    .nav-links .nav-link{padding:12px 16px;border-radius:0;border-bottom:1px solid var(--border)}
    .nav-actions{margin-left:0}
    .nav-actions .nav-link{display:none}
    .nav-actions .points-badge{display:none}

    .grid-4{grid-template-columns:repeat(2,1fr)}
    .grid-3{grid-template-columns:repeat(2,1fr)}
    .admin-layout{grid-template-columns:1fr}
    .admin-sidebar{display:none}
    .chat-layout{grid-template-columns:1fr}
    .chat-sidebar{display:none}
    .page{padding:16px 4%}
    .generate-result{min-height:300px}
}

@media(max-width:768px){
    .nav-inner{gap:4px}
    .nav-brand{font-size:15px}
    .nav-register{display:none}
    .nav-admin{padding:4px 10px;font-size:12px}

    .grid-2{grid-template-columns:1fr}
    .grid-3{grid-template-columns:1fr}
    .grid-4{grid-template-columns:1fr}
    .profile-layout{grid-template-columns:1fr}
    .profile-nav{flex-direction:row;overflow-x:auto;flex-wrap:nowrap}
    .profile-nav a{white-space:nowrap;padding:8px 14px;font-size:13px}
    .gallery{grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:12px}
    .gallery-card .prompt-text{font-size:12px;max-height:40px}
    .gallery-card .gallery-info{padding:10px}
    .page{padding:16px 3%}

    .table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
    table{min-width:600px;font-size:13px}

    .chat-msg{max-width:95%}
    .chat-messages{padding:12px}
    .chat-input-wrap{gap:6px}
    .chat-input-wrap textarea{font-size:14px}

    .card{padding:16px}
    .stat-card{padding:14px 16px}
    .stat-card .stat-value{font-size:24px}

    .modal{padding:20px;width:95%}
    .model-grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:8px}
    .model-card{padding:12px}

    .admin-layout{position:relative}
    .admin-sidebar.show-sidebar{
        display:flex;position:fixed;left:0;top:61px;bottom:0;
        z-index:50;width:220px;box-shadow:var(--shadow-lg);
    }
    .admin-menu-btn{
        display:inline-block;padding:6px 12px;font-size:18px;
        background:var(--bg-card);border:1px solid var(--border);
        border-radius:var(--radius-sm);cursor:pointer;margin-bottom:12px;
        color:var(--text);
    }

    .nav-link::after{display:none}
    .tab-btn{padding:10px 16px;font-size:13px}
}

/* === Lightbox === */
.lightbox-overlay {
    position:fixed;inset:0;z-index:400;
    background:rgba(0,0,0,.92);
    display:flex;align-items:center;justify-content:center;
    animation:fadeIn .2s ease;cursor:pointer;
}
.lightbox-overlay img {
    max-width:92vw;max-height:85vh;object-fit:contain;
    border-radius:var(--radius-lg);box-shadow:0 0 60px rgba(14,165,233,.1);
    animation:zoomIn .3s ease;
}
.lightbox-close {
    position:absolute;top:20px;right:30px;font-size:32px;color:#fff;
    background:none;border:none;cursor:pointer;z-index:1;opacity:.7;transition:opacity var(--transition);
}
.lightbox-close:hover{opacity:1}
@keyframes zoomIn{from{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}
@media(max-width:768px){
    .lightbox-overlay{flex-direction:column;padding:16px}
    .lightbox-overlay img{max-width:100vw;max-height:60vh;order:1}
    .lightbox-overlay .lightbox-close{top:8px;right:12px;font-size:28px}
    .lightbox-overlay div[style*="position:absolute"]{
        position:relative !important;bottom:auto !important;left:auto !important;
        transform:none !important;order:0;padding:8px 0;color:var(--text-secondary) !important;
        max-width:100% !important;font-size:13px !important;
    }
}

/* === Shimmer Loading === */
@keyframes shimmer{0%{background-position:-400px 0}100%{background-position:400px 0}}
.shimmer-bg{
    animation:shimmer 1.5s infinite linear;
    background:linear-gradient(90deg,var(--border) 25%,var(--bg-card) 50%,var(--border) 75%);
    background-size:800px 100%;
}
.gen-loading {
    text-align:center;padding:40px;
}
.gen-loading .pulse-ring {
    width:48px;height:48px;margin:0 auto 16px;
    border:3px solid var(--primary);border-radius:50%;
    animation:pulseRing 1.2s infinite ease-out;
    position:relative;
}
.gen-loading .pulse-ring::after {
    content:'';position:absolute;inset:-6px;border-radius:50%;
    border:2px solid var(--primary);opacity:.4;
    animation:pulseRing 1.2s infinite ease-out .2s;
}
@keyframes pulseRing {
    0%{transform:scale(.8);opacity:1}100%{transform:scale(1.5);opacity:.2}
}
.gen-loading .loading-text{color:var(--text-secondary);font-size:14px}
.gen-loading .loading-dots::after{
    content:'';animation:dots 1.5s infinite;
}
@keyframes dots{0%{content:''}25%{content:'.'}50%{content:'..'}75%{content:'...'}100%{content:''}}

/* === Form Groups === */
.form-group{margin-bottom:20px}
.form-group label{display:block;font-weight:600;margin-bottom:6px;font-size:14px;color:var(--text-secondary)}
.form-group .input,.form-group .textarea,.form-group .select{width:100%}

/* === Utilities === */
.flex{display:flex}.flex-center{align-items:center;justify-content:center}
.gap-2{gap:8px}.gap-4{gap:16px}.gap-6{gap:24px}
.mt-2{margin-top:8px}.mt-4{margin-top:16px}.mt-6{margin-top:24px}
.mb-2{margin-bottom:8px}.mb-4{margin-bottom:16px}.mb-6{margin-bottom:24px}
.text-center{text-align:center}.text-sm{font-size:13px}.text-muted{color:var(--text-muted)}
.font-bold{font-weight:700}.w-full{width:100%}
.truncate{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.hidden{display:none}

/* === Scrollbar === */
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--primary)}

/* === Selection === */
::selection{background:var(--primary-dim);color:var(--primary)}

/* ============================================
   Hero Section — 全新科技风首页
   ============================================ */
.hero{
    position:relative;text-align:center;
    padding:120px 5% 100px;overflow:hidden;
    min-height:80vh;display:flex;align-items:center;justify-content:center;
}
.hero-particles{position:absolute;inset:0;z-index:0;pointer-events:none}
.hero-glow{
    position:absolute;bottom:-40%;left:50%;transform:translateX(-50%);
    width:140%;height:60%;border-radius:50%;
    background:radial-gradient(ellipse,rgba(0,229,255,0.08) 0%,rgba(168,85,247,0.04) 40%,transparent 70%);
    pointer-events:none;z-index:0;
}
.hero-content{position:relative;z-index:1;max-width:800px;margin:0 auto}
.hero-badge{
    display:inline-block;padding:8px 24px;border-radius:30px;
    font-size:13px;font-weight:600;letter-spacing:1px;
    background:rgba(0,229,255,0.08);border:1px solid rgba(0,229,255,0.2);
    color:var(--primary);margin-bottom:28px;
    backdrop-filter:blur(8px);
}
.hero-title{
    font-size:clamp(36px,7vw,72px);font-weight:900;letter-spacing:-1px;
    line-height:1.15;margin-bottom:24px;
}
.hero-title-line{display:block;color:var(--text)}
.hero-title-gradient{
    display:block;
    background:linear-gradient(135deg,#00e5ff 0%,#a855f7 40%,#00e5ff 80%);
    background-size:200% 200%;
    -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
    animation:gradientShift 4s ease infinite;
}
.hero-desc{
    font-size:18px;color:var(--text-secondary);max-width:600px;
    margin:0 auto 40px;line-height:1.8;
}
.hero-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn-lg{font-size:16px;padding:16px 44px;letter-spacing:.5px;font-weight:700}

/* === Stats Section === */
.stats-section{
    padding:0 5%;margin-top:-40px;position:relative;z-index:2;
}
.stats-grid{
    display:flex;justify-content:center;align-items:center;gap:0;
    max-width:900px;margin:0 auto;
    background:var(--bg-card);border:1px solid var(--border-glow);
    border-radius:var(--radius-xl);padding:32px 24px;
    backdrop-filter:blur(20px);
    box-shadow:var(--shadow-lg),0 0 40px rgba(0,229,255,0.06);
}
.stat-item{text-align:center;flex:1;padding:0 20px}
.stat-number{
    font-size:clamp(28px,4vw,48px);font-weight:900;
    background:var(--gradient);-webkit-background-clip:text;
    -webkit-text-fill-color:transparent;background-clip:text;
    letter-spacing:-1px;
}
.stat-label{font-size:13px;color:var(--text-muted);font-weight:600;letter-spacing:1px;margin-top:4px;text-transform:uppercase}
.stat-divider{width:1px;height:48px;background:var(--border);flex-shrink:0}

/* === Features Section === */
.features-section{padding:100px 5% 80px;max-width:1200px;margin:0 auto}
.section-header{text-align:center;margin-bottom:56px}
.section-heading{
    font-size:clamp(24px,3.5vw,36px);font-weight:900;letter-spacing:.5px;
    margin-bottom:12px;
}
.section-subheading{font-size:16px;color:var(--text-secondary);max-width:500px;margin:0 auto}
.features-grid{
    display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
}
.glow-card{
    background:var(--bg-card);border-radius:var(--radius-xl);padding:40px 28px;
    border:1px solid var(--border);text-align:center;
    backdrop-filter:blur(12px);position:relative;overflow:hidden;
    transition:all .3s ease;
}
.glow-card::before{
    content:'';position:absolute;top:0;left:0;right:0;height:2px;
    background:var(--gradient);opacity:0;transition:opacity .3s ease;
}
.glow-card::after{
    content:'';position:absolute;inset:-1px;border-radius:inherit;
    background:conic-gradient(from 180deg,transparent,var(--primary),var(--accent),transparent);
    z-index:-1;opacity:0;transition:opacity .3s ease;filter:blur(8px);
}
.glow-card:hover{
    border-color:var(--border-glow);
    transform:translateY(-6px);
    box-shadow:0 20px 40px rgba(0,0,0,.4),0 0 30px rgba(0,229,255,0.08);
}
.glow-card:hover::before{opacity:1}
.glow-card:hover::after{opacity:.25}
.feature-icon-wrap{
    width:64px;height:64px;border-radius:16px;
    background:linear-gradient(135deg,rgba(0,229,255,0.1),rgba(168,85,247,0.1));
    display:flex;align-items:center;justify-content:center;
    margin:0 auto 20px;color:var(--primary);
    border:1px solid rgba(0,229,255,0.15);
}
.feature-heading{font-size:20px;font-weight:700;margin-bottom:10px;letter-spacing:.3px}
.feature-desc{color:var(--text-secondary);font-size:14px;line-height:1.8}

/* === Models Section === */
.models-section{padding:40px 5% 80px;max-width:1200px;margin:0 auto}
.models-cloud{
    display:flex;flex-wrap:wrap;gap:12px;justify-content:center;
    margin-top:40px;
}
.model-tag{
    padding:10px 24px;border-radius:30px;font-size:14px;font-weight:600;
    background:var(--bg-card);border:1px solid var(--border);
    color:var(--text-secondary);transition:all .3s ease;
    backdrop-filter:blur(8px);cursor:default;
    display:inline-flex;align-items:center;gap:8px;
}
.model-tag small{
    font-size:10px;font-weight:700;letter-spacing:1px;
    padding:2px 8px;border-radius:10px;
    text-transform:uppercase;
}
.model-tag-图片 small{background:rgba(0,229,255,0.12);color:#00e5ff}
.model-tag-对话 small{background:rgba(168,85,247,0.12);color:#a855f7}
.model-tag-视频 small{background:rgba(255,171,0,0.12);color:#ffab00}
.model-tag:hover{
    border-color:var(--primary);color:var(--primary);
    box-shadow:0 0 20px rgba(0,229,255,0.12);
    transform:translateY(-3px);
}
.model-tag-图片:hover{border-color:#00e5ff;color:#00e5ff;box-shadow:0 0 20px rgba(0,229,255,0.15)}
.model-tag-对话:hover{border-color:#a855f7;color:#a855f7;box-shadow:0 0 20px rgba(168,85,247,0.15)}
.model-tag-视频:hover{border-color:#ffab00;color:#ffab00;box-shadow:0 0 20px rgba(255,171,0,0.15)}

/* === CTA Section === */
.cta-section{padding:40px 5% 100px;max-width:900px;margin:0 auto}
.cta-card{
    text-align:center;padding:60px 40px;
    background:linear-gradient(135deg,rgba(0,229,255,0.06),rgba(168,85,247,0.04));
    border:1px solid var(--border-glow);border-radius:var(--radius-xl);
    backdrop-filter:blur(16px);position:relative;overflow:hidden;
}
.cta-card::before{
    content:'';position:absolute;top:0;left:0;right:0;height:2px;
    background:var(--gradient);
}
.cta-title{font-size:clamp(24px,3vw,32px);font-weight:900;margin-bottom:12px}
.cta-desc{font-size:16px;color:var(--text-secondary);margin-bottom:32px}
.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* === Footer === */
.footer{
    text-align:center;padding:28px 5%;
    color:var(--text-muted);font-size:13px;
    border-top:1px solid var(--border);
}

/* === 悬浮客服二维码 === */
.float-qr{
    position:fixed;right:24px;bottom:80px;z-index:90;
}
.float-qr-btn{
    width:52px;height:52px;border-radius:50%;
    background:var(--gradient);border:none;cursor:pointer;
    display:flex;align-items:center;justify-content:center;
    box-shadow:0 4px 20px rgba(0,229,255,0.3);
    transition:all .3s ease;color:#fff;font-size:22px;
}
.float-qr-btn:hover{
    transform:scale(1.1);box-shadow:0 6px 30px rgba(0,229,255,0.4);
}
.float-qr-panel{
    position:absolute;bottom:64px;right:0;
    background:var(--bg-card-solid);border:1px solid var(--border-glow);
    border-radius:var(--radius-lg);padding:16px;
    box-shadow:var(--shadow-lg),0 0 30px rgba(0,229,255,0.08);
    opacity:0;visibility:hidden;transform:translateY(10px);
    transition:all .25s ease;pointer-events:none;
    text-align:center;min-width:180px;
}
.float-qr:hover .float-qr-panel{
    opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto;
}
.float-qr-panel img{
    width:160px;height:160px;border-radius:var(--radius);object-fit:cover;
    border:1px solid var(--border);
}
.float-qr-panel p{
    font-size:12px;color:var(--text-muted);margin-top:8px;font-weight:600;
}

/* === 响应式 Hero === */
@media(max-width:1024px){
    .features-grid{grid-template-columns:1fr;max-width:500px;margin-left:auto;margin-right:auto}
}
@media(max-width:768px){
    .hero{padding:80px 5% 60px;min-height:auto}
    .hero-title{font-size:32px}
    .hero-desc{font-size:15px}
    .hero-actions .btn{padding:12px 28px;font-size:14px}
    .stats-grid{flex-wrap:wrap;gap:16px;padding:24px 16px}
    .stat-item{flex:0 0 40%}
    .stat-divider{display:none}
    .feature-card,.glow-card{padding:28px 20px}
    .model-tag{padding:8px 16px;font-size:13px}
    .cta-card{padding:40px 20px}
    .float-qr{right:16px;bottom:60px}
}