* {
    box-sizing: border-box;
    outline: none;
}

html,
body {
    width: 100%;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg);
    color: var(--text);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background-image:
        radial-gradient(circle at 15% 50%, var(--primary-soft), transparent 25%),
        radial-gradient(circle at 85% 30%, var(--accent-soft), transparent 25%);
    background-attachment: fixed;
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
}

.main-wrapper {
    min-height: 100vh;
}

.fade-in {
    animation: fadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.skeleton {
    background: linear-gradient(90deg, var(--card) 25%, var(--card-hover) 50%, var(--card) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: 8px;
}

@keyframes skeleton-loading {
    0% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

#nprogress .bar {
    background: var(--primary);
    box-shadow: 0 0 10px var(--primary-glow);
    height: 3px;
    position: fixed;
    z-index: 10001;
    top: 0;
    left: 0;
    width: 100%;
    transition: transform 200ms ease;
    transform: translateX(-100%);
}

.theme-fab {
    position: fixed;
    right: 20px;
    bottom: 20px;
    width: 46px;
    height: 46px;
    border-radius: 14px;
    border: 1px solid var(--border);
    background: var(--card);
    color: var(--text);
    box-shadow: var(--shadow-elev-1);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 9998;
    transition: transform 0.15s ease, background 0.2s ease, border-color 0.2s ease;
}

.theme-fab:hover {
    transform: translateY(-2px);
    border-color: var(--primary-border);
    background: var(--card-hover);
}

.theme-fab:focus-visible {
    box-shadow: 0 0 0 4px var(--primary-glow), var(--shadow-elev-1);
}

.theme-fab-icon {
    font-size: 18px;
    line-height: 1;
}

.theme-menu {
    position: fixed;
    right: 20px;
    bottom: 76px;
    width: 200px;
    padding: 12px;
    border-radius: 16px;
    border: 1px solid var(--border);
    background: var(--card);
    box-shadow: var(--shadow-elev-2);
    z-index: 9999;
    opacity: 0;
    transform: translateY(10px) scale(0.98);
    pointer-events: none;
    transition: opacity 0.18s ease, transform 0.18s ease;
}

.theme-menu.open {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

.theme-menu-title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--text);
    margin: 0 0 8px 0;
    letter-spacing: -0.01em;
}

.theme-menu-item {
    width: 100%;
    text-align: left;
    padding: 10px 12px;
    border-radius: 12px;
    border: 1px solid transparent;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    font-weight: 600;
    transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.theme-menu-item:hover {
    background: var(--surface);
    color: var(--text);
}

.theme-menu-item.active {
    background: var(--primary-soft);
    border-color: var(--primary-border);
    color: var(--text);
}

.glass {
    background: var(--card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border);
}

.text-dim {
    color: var(--text-dim) !important;
}

.text-secondary {
    color: var(--text-secondary) !important;
}

a {
    color: var(--link);
    text-decoration: none;
    transition: 0.2s;
}

a:hover {
    color: var(--link-hover);
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-display);
    letter-spacing: -0.02em;
    color: var(--text);
}

.sidebar {
    width: 280px;
    background: var(--sidebar);
    backdrop-filter: blur(20px);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    padding: 30px 20px;
    position: fixed;
    height: 100vh;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 50px;
    text-decoration: none;
}

.brand-logo {
    width: 40px;
    height: 40px;
    background: var(--primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    color: var(--on-primary);
    box-shadow: 0 0 20px var(--primary-glow);
}

.btn {
    padding: 12px 24px;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.btn-primary {
    background: var(--primary);
    color: var(--on-primary);
    box-shadow: 0 4px 15px var(--primary-glow);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--primary-glow);
}

.btn-success {
    background: var(--success);
    color: var(--on-success);
}

.btn-ghost {
    background: transparent;
    color: var(--text-dim);
    border: 1px solid var(--border);
}

.btn-ghost:hover {
    color: var(--text);
    border-color: var(--text-dim);
    background: rgba(255, 255, 255, 0.05);
}

.main {
    flex-grow: 1;
    margin-left: 280px;
    padding: 40px;
    width: calc(100% - 280px);
    max-width: none;
    box-sizing: border-box;
}

.card {
    background: var(--card);
    backdrop-filter: blur(16px);
    border-radius: 24px;
    border: 1px solid var(--border);
    padding: 30px;
    position: relative;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-elev-1);
}

input:not([type="checkbox"]):not([type="radio"]),
textarea,
select {
    width: 100%;
    padding: 16px;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 16px;
    color: var(--text);
    margin-bottom: 20px;
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.2s ease;
}

input:not([type="checkbox"]):not([type="radio"]):focus,
textarea:focus,
select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-glow);
    outline: none;
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 100%;
}

th {
    padding: 20px 30px;
    text-align: left;
    color: var(--text-dim);
    font-size: 0.85rem;
    background: var(--surface);
}

td {
    padding: 25px 30px;
    border-bottom: 1px solid var(--border);
}

.status-badge {
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
}

.paid {
    background: var(--success-soft);
    color: var(--success);
}

.unpaid {
    background: var(--warning-soft);
    color: var(--warning);
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.2px;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.04);
    color: var(--text);
}

.badge-primary {
    border-color: var(--primary-border);
    background: var(--primary-soft);
    color: var(--text);
}

.badge-warning {
    border-color: var(--warning-border);
    background: var(--warning-soft);
    color: var(--warning);
}

.badge-danger {
    border-color: var(--danger-border);
    background: var(--danger-soft);
    color: var(--danger);
}

/* 商品列表网格布局 */
.grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    /* 增加间距 */
}

/* 响应式网格布局 */
@media (max-width: 1600px) {
    .grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 1200px) {
    .grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .grid {
        grid-template-columns: 1fr;
    }
}

.sidebar-ad {
    transition: 0.3s;
}

.sidebar-ad:hover {
    transform: translateX(-5px);
}

/* Loading Animation */
.loading-spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--text);
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.theme-card:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--primary) !important;
}

.theme-card.active {
    background: var(--primary-glow);
    border-color: var(--primary) !important;
}