:root {
    --ui-color-bg: #eff5ff;
    --ui-color-surface: #ffffff;
    --ui-color-text: #192539;
    --ui-color-text-secondary: #5f6f86;
    --ui-color-primary: #409eff;
    --ui-color-primary-hover: #337ecc;
    --ui-color-primary-soft: #eaf3ff;
    --ui-color-primary-softer: #f4f9ff;
    --ui-color-border: #d9e2ef;
    --ui-color-muted-bg: #eef3fa;
    --ui-color-accent: #337ecc;
    --ui-shell-max-width: 1240px;
    --ui-shell-gutter: 18px;

    --ui-font-family-base: "Manrope", "IBM Plex Sans", "Helvetica Neue", helvetica, arial, sans-serif;
    --ui-font-size-base: 14px;
    --ui-font-size-xs: 12px;
    --ui-font-size-sm: 13px;
    --ui-font-size-md: 14px;
    --ui-font-size-lg: 15px;
    --ui-font-size-xl: 16px;
    --ui-font-size-2xl: 18px;
    --ui-font-size-3xl: 20px;
    --ui-font-size-4xl: 24px;
    --ui-font-size-5xl: 30px;
    --ui-line-height-base: 1.42857;
    --ui-line-height-tight: 1.25;
    --ui-line-height-normal: 1.4;
    --ui-line-height-relaxed: 1.6;
    --ui-font-weight-regular: 400;
    --ui-font-weight-medium: 500;
    --ui-font-weight-semibold: 600;
    --ui-font-weight-bold: 700;

    --ui-radius-sm: 6px;
    --ui-radius-md: 12px;
    --ui-radius-lg: 18px;

    --ui-shadow-sm: 0 8px 18px rgba(64, 158, 255, 0.16);
    --ui-shadow-md: 0 12px 28px rgba(64, 158, 255, 0.22);
    --ui-shadow-card: 0 14px 32px rgba(64, 158, 255, 0.14);

    /* Element Plus theme mapping */
    --el-color-primary: var(--ui-color-primary);
    --el-color-primary-light-3: #79bbff;
    --el-color-primary-light-5: #a0cfff;
    --el-color-primary-light-7: #c6e2ff;
    --el-color-primary-light-8: #d9ecff;
    --el-color-primary-light-9: #ecf5ff;
    --el-color-primary-dark-2: var(--ui-color-primary-hover);
    --el-text-color-primary: var(--ui-color-text);
    --el-text-color-regular: var(--ui-color-text-secondary);
    --el-border-color: var(--ui-color-border);
    --el-border-color-light: var(--ui-color-border);
    --el-fill-color-blank: var(--ui-color-surface);
    --el-bg-color: var(--ui-color-surface);
    --el-mask-color: rgba(15, 23, 42, 0.42);
}

html,
body,
#app {
    min-height: 100%;
}

#app {
    display: flex;
    flex-direction: column;
}

#app > div {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

body {
    margin: 0;
    font-family: var(--ui-font-family-base);
    font-size: var(--ui-font-size-base);
    line-height: var(--ui-line-height-base);
    color: var(--ui-color-text);
    background-color: #eef2f8;
    background-image:
        radial-gradient(110% 68% at -8% 44%, rgba(181, 164, 232, 0.24) 0%, rgba(181, 164, 232, 0.14) 34%, rgba(181, 164, 232, 0) 72%),
        radial-gradient(110% 68% at 108% 44%, rgba(164, 206, 241, 0.26) 0%, rgba(164, 206, 241, 0.14) 34%, rgba(164, 206, 241, 0) 72%),
        radial-gradient(84% 36% at 50% -6%, rgba(255, 255, 255, 0.6) 0%, rgba(255, 255, 255, 0) 78%),
        linear-gradient(180deg, #f1f4fa 0%, #f4f1fa 52%, #edf3f9 100%);
    background-repeat: no-repeat;
}

a {
    color: var(--ui-color-primary);
}

a:hover {
    color: var(--ui-color-primary-hover);
}

.main-panel {
    width: min(var(--ui-shell-max-width), calc(100% - (var(--ui-shell-gutter) * 2)));
    max-width: none;
    margin: 18px auto 0;
    padding: 0 0 24px;
    box-sizing: border-box;
    background: transparent;
    flex: 1;
}

.main-content {
    background: var(--ui-color-surface);
    border: 1px solid rgba(217, 226, 239, 0.9);
    border-radius: var(--ui-radius-lg);
    box-shadow: var(--ui-shadow-card);
    overflow: hidden;
    animation: ui-fade-up 0.34s ease;
}

@keyframes ui-fade-up {
    from {
        opacity: 0;
        transform: translateY(6px);
    }

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

.form-control,
.el-input__wrapper {
    border-radius: var(--ui-radius-sm);
}

.el-button--primary {
    --el-button-bg-color: var(--ui-color-primary);
    --el-button-border-color: var(--ui-color-primary);
    --el-button-hover-bg-color: var(--ui-color-primary-hover);
    --el-button-hover-border-color: var(--ui-color-primary-hover);
}

.el-button {
    border-radius: var(--ui-radius-sm);
    font-weight: var(--ui-font-weight-semibold);
}

.el-button--danger.is-plain {
    --el-button-text-color: #b42318;
    --el-button-border-color: #fda29b;
    --el-button-bg-color: #fff5f4;
    --el-button-hover-text-color: #ffffff;
    --el-button-hover-border-color: #d92d20;
    --el-button-hover-bg-color: #d92d20;
}

.el-table {
    --el-table-header-bg-color: var(--ui-color-primary-softer);
    --el-table-header-text-color: var(--ui-color-text);
    --el-table-row-hover-bg-color: var(--ui-color-primary-softer);
    border: 1px solid var(--ui-color-border);
    border-radius: var(--ui-radius-md);
    overflow: hidden;
}

.el-table th.el-table__cell {
    font-weight: var(--ui-font-weight-bold);
}

.el-empty__description p {
    color: var(--ui-color-text-secondary);
}

.el-message {
    border-radius: var(--ui-radius-sm);
    box-shadow: var(--ui-shadow-card);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
.el-button:focus-visible,
[role="button"]:focus-visible {
    outline: 2px solid color-mix(in srgb, var(--ui-color-primary) 70%, #ffffff);
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Keep Vant only for Toast usage and align its visual tone. */
.van-toast {
    border-radius: var(--ui-radius-sm);
    background: rgba(15, 23, 42, 0.88);
    color: #fff;
    box-shadow: var(--ui-shadow-card);
}

.van-toast--loading {
    padding: 12px;
}

@media (max-width: 576px) {
    :root {
        --ui-shell-gutter: 10px;
    }

    body {
        font-size: var(--ui-font-size-sm);
    }

    .main-panel {
        margin-top: 10px;
        padding: 0 0 16px;
    }

    .main-content {
        border-radius: var(--ui-radius-md);
        box-shadow: var(--ui-shadow-sm);
    }
}