* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

:root {
    --primary-color: #007aff;
    --secondary-color: #ff9500;

    --bg-light: #f5f5f7;
    --bg-dark: #000000;
    --text-light: #1d1d1f;
    --text-dark: #f5f5f7;
    --glass-bg-light: rgba(255, 255, 255, 0.25);
    --glass-bg-dark: rgba(0, 0, 0, 0.4);
    --glass-border-light: rgba(255, 255, 255, 0.35);
    --glass-border-dark: rgba(255, 255, 255, 0.15);

    --bg-color: var(--bg-light);
    --text-color: var(--text-light);
    --glass-bg: var(--glass-bg-light);
    --glass-border: var(--glass-border-light);
    --loading-text-color: var(--text-light);

    --header-font: "Xingkai SC", "STXingkai", "KaiTi", "华文行楷", cursive;
}

html {
    scrollbar-width: none;
    -ms-overflow-style: none;
}

html::-webkit-scrollbar {
    display: none;
}

body {
    background-color: var(--bg-color);
    color: #f5f5f7;
    transition: background-color 0.3s, color 0.3s;
    overflow-y: auto;
    overflow-x: hidden;
    min-height: 100vh;
    width: 100vw;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

#liquid-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 5;
    pointer-events: none;
    background-image: inherit;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    filter: url(#liquid-filter);
    clip-path: url(#cards-clip);
    display: none;
}

#liquid-overlay.active {
    display: block;
}

#liquid-overlay.liquid-mode {
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
}

.hidden {
    display: none;
}

html .hidden {
    display: none;
}

#app.hidden {
    display: none;
}

#loading-page.hidden {
    display: none;
}

#settings-modal.hidden {
    display: none;
}

#ms-container.hidden {
    display: none;
}

body.no-animation {
    transition: none;
}