/* ===== 全局 ===== */
:root {
    --bg: #0f0f1a;
    --surface: #1a1a2e;
    --surface2: #16213e;
    --primary: #4ECDC4;
    --primary-dim: #2d8f88;
    --text: #e0e0f0;
    --text-dim: #8888aa;
    --accent: #E74C3C;
    --radius: 12px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
}

/* ===== 导航 ===== */
.navbar {
    background: var(--surface);
    border-bottom: 1px solid rgba(255,255,255,0.06);
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    height: 60px;
    gap: 16px;
}

.nav-brand {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
}

.nav-subtitle {
    color: var(--text-dim);
    font-size: 13px;
    flex: 1;
}

.btn-upload-nav {
    background: var(--primary);
    color: #0f0f1a;
    border: none;
    padding: 8px 20px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: background 0.2s;
}
.btn-upload-nav:hover { background: var(--primary-dim); }

/* ===== 页面主体 ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 24px;
}

.page-header { margin-bottom: 32px; }
.page-header h1 { font-size: 28px; font-weight: 700; margin-bottom: 8px; }
.page-desc { color: var(--text-dim); font-size: 15px; }

/* ===== 模型网格 ===== */
.model-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.model-card {
    background: var(--surface);
    border-radius: var(--radius);
    border: 1px solid rgba(255,255,255,0.06);
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: transform 0.2s, border-color 0.2s;
}
.model-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
}

.card-preview {
    height: 180px;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.preview-placeholder {
    font-size: 48px;
    font-weight: 800;
    color: var(--primary);
    opacity: 0.5;
}

.card-body { padding: 16px; }
.card-body h3 { font-size: 16px; margin-bottom: 8px; }
.card-meta {
    display: flex;
    justify-content: space-between;
    color: var(--text-dim);
    font-size: 13px;
}

/* ===== 空状态 ===== */
.empty-state {
    text-align: center;
    padding: 80px 20px;
}
.empty-icon { font-size: 64px; margin-bottom: 16px; }
.empty-state h2 { margin-bottom: 8px; }
.empty-state p { color: var(--text-dim); margin-bottom: 24px; }
.btn-primary {
    background: var(--primary);
    color: #0f0f1a;
    border: none;
    padding: 12px 28px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
    transition: background 0.2s;
}
.btn-primary:hover { background: var(--primary-dim); }

/* ===== 上传弹窗 ===== */
.modal {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background: var(--surface);
    border-radius: 16px;
    width: 90%;
    max-width: 520px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 24px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}
.modal-header h2 { font-size: 20px; }
.modal-close {
    background: none;
    border: none;
    color: var(--text-dim);
    font-size: 28px;
    cursor: pointer;
}

.form-group { margin-bottom: 20px; }
.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 14px;
    color: var(--text-dim);
}
.form-group input[type="text"] {
    width: 100%;
    padding: 10px 14px;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.1);
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
}
.form-group input[type="text"]:focus {
    outline: none;
    border-color: var(--primary);
}

.file-dropzone {
    border: 2px dashed rgba(255,255,255,0.15);
    border-radius: 12px;
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s;
}
.file-dropzone:hover { border-color: var(--primary); }
.file-dropzone.dragover { border-color: var(--primary); background: rgba(78,205,196,0.05); }
.dropzone-icon { font-size: 40px; margin-bottom: 12px; }
.dropzone-hint { font-size: 12px; color: var(--text-dim); margin-top: 8px; }

.file-list { margin-top: 12px; }
.file-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--bg);
    border-radius: 6px;
    margin-bottom: 4px;
    font-size: 13px;
}

.form-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    margin-top: 24px;
}

.btn-secondary {
    background: rgba(255,255,255,0.08);
    color: var(--text);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 10px 24px;
    border-radius: 8px;
    font-size: 14px;
    cursor: pointer;
}
.btn-secondary:hover { background: rgba(255,255,255,0.12); }

/* ===== 进度条 ===== */
.progress-bar {
    height: 6px;
    background: rgba(255,255,255,0.1);
    border-radius: 3px;
    overflow: hidden;
    margin: 16px 0;
}
.progress-fill {
    height: 100%;
    width: 0%;
    background: var(--primary);
    border-radius: 3px;
    transition: width 0.3s;
}

/* ===== 响应式 ===== */
@media (max-width: 640px) {
    .nav-subtitle { display: none; }
    .model-grid { grid-template-columns: 1fr; }
}


/* ===== 分享按钮 ===== */
.btn-share {
    position: absolute;
    right: 12px;
    bottom: 12px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 8px;
    padding: 6px 10px;
    font-size: 16px;
    cursor: pointer;
    transition: background 0.2s, transform 0.15s;
    line-height: 1;
    z-index: 2;
}
.btn-share:hover {
    background: rgba(78,205,196,0.2);
    border-color: var(--primary);
    transform: scale(1.1);
}

.model-card {
    position: relative;
}

/* ===== 二维码弹窗 ===== */
.qr-modal-content {
    max-width: 380px;
    text-align: center;
}

.qr-body {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 8px 0;
}

.qr-image-container {
    background: #fff;
    border-radius: 12px;
    padding: 12px;
    width: 220px;
    height: 220px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qr-image-container img {
    width: 100%;
    height: 100%;
    image-rendering: pixelated;
}

.qr-model-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
}

.qr-hint {
    font-size: 13px;
    color: var(--text-dim);
}

.qr-link-box {
    display: flex;
    gap: 8px;
    width: 100%;
    margin-top: 4px;
}

.qr-link-box input {
    flex: 1;
    padding: 8px 12px;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.1);
    background: var(--bg);
    color: var(--text-dim);
    font-size: 13px;
    font-family: monospace;
}

.btn-copy {
    background: var(--primary);
    color: #0f0f1a;
    border: none;
    padding: 8px 16px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 13px;
    cursor: pointer;
    white-space: nowrap;
}
.btn-copy:hover {
    background: var(--primary-dim);
}

.qr-loading {
    padding: 40px;
    color: var(--text-dim);
}