/* 1-base.css @🍮 */
:root {
    --bg-color: #fce4ec;
    --primary-color: #ff80ab;
    --secondary-color: #f48fb1;
    --accent-color: #90caf9;
    --text-color: #444;
    --white-color: #fff;
    --border-radius: 18px;
    --phone-corner-radius: 0px;
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --top-pinned-bg: #fff0f5;
    --online-status-color: #4CAF50;
}
*, *::before, *::after {
    box-sizing: border-box;
}
html, body {
    /* @🍮 锁定屏幕，禁止左右乱滑 */
    overflow-x: hidden;
    width: 100%;
}
body {
    font-family: var(--font-family);
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #fce4ec, #f8bbd0);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}
.phone-screen {
    width: 100%;
    max-width: 420px;
    height: 100vh;
    max-height: 850px;
    background-color: var(--white-color);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border-radius: var(--phone-corner-radius);
    overflow: hidden;
    position: relative;
    display: flex;
    flex-direction: column;
}
.screen {
    display: none;
    flex-direction: column;
    width: 100%;
    height: 100%;
    animation: fadeIn 0.5s ease;
}
.screen.active {
    display: flex;
}
@keyframes fadeIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}
.content {
    flex-grow: 1;
    overflow-y: auto;
    padding: 20px;
    position: relative;
}
.placeholder-text {
    text-align: center;
    color: #aaa;
    margin-top: 50px;
}
@keyframes slideUp {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}
@keyframes slideInRight {
    from { transform: translateX(100%); }
    to { transform: translateX(0); }
}
@keyframes spin {
    to { transform: rotate(360deg); }
}