/* === 共享样式 — Alion 网站 === */

/* --- Reset --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: PingFang SC, Microsoft YaHei, sans-serif;
    -webkit-tap-highlight-color: transparent;
}

/* --- CSS 变量 --- */
:root {
    --p: 1.8vmin;
    --pink: #f06292;
    --pink-dark: #d81b60;
    --pink-light: #fce4ec;
    --text: #880e4f;
    --text-secondary: #ad1457;
    --white-glass: rgba(255, 255, 255, 0.55);
}

/* --- 背景 --- */
body {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--text);
    overflow: hidden;
    position: relative;
    background-color: var(--pink-light);
}

body::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: url('alion.png') no-repeat center center fixed;
    background-size: cover;
    filter: blur(8px);
    transform: scale(1.1);
    z-index: -1;
}

/* --- 导航栏 --- */
.navbar {
    position: fixed;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 33.33%;
    min-width: 220px;
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--white-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 25px;
    border: 1px solid rgba(240, 98, 146, 0.2);
    box-shadow: 0 4px 20px rgba(136, 14, 79, 0.08);
}

@media (max-width: 768px) {
    .navbar {
        width: 55%;
        min-width: 180px;
        padding: 6px 12px;
        gap: 4px;
    }
}

@media (max-width: 480px) {
    .navbar {
        width: 65%;
        min-width: 160px;
        padding: 5px 10px;
        gap: 2px;
    }
    .navbar a, .navbar button {
        font-size: 0.75rem !important;
        padding: 6px 12px !important;
    }
}

.navbar a, .navbar button {
    text-decoration: none;
    color: var(--text);
    font-size: 0.85rem;
    padding: 8px 18px;
    border-radius: 20px;
    border: none;
    background: transparent;
    cursor: pointer;
    transition: all 0.25s;
    font-weight: 500;
    white-space: nowrap;
}

.navbar a:hover, .navbar button:hover {
    background: rgba(240, 98, 146, 0.15);
    color: var(--pink-dark);
}

.navbar a.active, .navbar button.active {
    background: var(--pink);
    color: #fff;
}

/* --- 容器 / 卡片 --- */
.container, .card {
    background: rgba(255, 255, 255, 0.45);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 2rem 1.5rem;
    border-radius: 24px;
    text-align: center;
    box-shadow: 0 8px 32px 0 rgba(244, 143, 177, 0.3);
    width: 85%;
    max-width: 400px;
    max-height: 90vh;
    overflow-y: auto;
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
    margin: 0 auto;
    user-select: none;
}

@media (max-width: 480px) {
    .container, .card {
        padding: 1.5rem 1rem;
        width: 90%;
        top: 65px;
    }
}

/* --- 隐藏状态 --- */
.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

/* --- 带过渡的容器 --- */
.transition {
    transition: opacity 0.35s ease, visibility 0.35s ease, transform 0.35s ease;
}

.hidden.transition,
.transition.hidden {
    transform: scale(0.95) translateY(10px);
}

/* --- 按钮 --- */
.btn, .btn-action, .btn-submit {
    padding: 12px 30px;
    background-color: var(--pink);
    color: white;
    border-radius: 50px;
    border: none;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 4px 10px rgba(240, 98, 146, 0.2);
    display: inline-block;
    text-align: center;
}

.btn:hover, .btn-action:hover, .btn-submit:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(240, 98, 146, 0.4);
    background-color: #ec407a;
}

.btn:active, .btn-action:active, .btn-submit:active {
    transform: translateY(1px);
    box-shadow: 0 2px 5px rgba(240, 98, 146, 0.2);
}

.btn:disabled, .btn-action:disabled, .btn-submit:disabled {
    background-color: #ccc;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-block {
    display: block;
    width: 100%;
}

/* --- 表单 --- */
.form-group {
    margin-bottom: 16px;
    text-align: left;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    margin-bottom: 6px;
    color: var(--text-secondary);
    font-weight: 500;
}

.form-group input,
.form-group textarea,
input[type="text"],
input[type="password"],
textarea {
    width: 100%;
    padding: 11px 14px;
    border: 1px solid rgba(240, 98, 146, 0.25);
    border-radius: 10px;
    font-size: 0.95rem;
    outline: none;
    background: rgba(255, 255, 255, 0.6);
    color: var(--text);
    transition: border-color 0.25s, box-shadow 0.25s;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
input[type="text"]:focus,
input[type="password"]:focus,
textarea:focus {
    border-color: var(--pink);
    box-shadow: 0 0 0 3px rgba(240, 98, 146, 0.12);
}

input::placeholder, textarea::placeholder {
    color: #c48ba5;
}

textarea {
    resize: none;
}

/* --- 错误提示 --- */
.err {
    color: var(--pink-dark);
    font-size: 0.82rem;
    margin-bottom: 14px;
    padding: 8px 12px;
    background: rgba(216, 27, 96, 0.08);
    border-radius: 8px;
    display: none;
    text-align: center;
}

/* --- 标题 --- */
h1 { font-size: 1.6rem; margin-bottom: 1.2rem; }
h1::after {
    content: ''; display: block; width: 40px; height: 3px;
    background: var(--pink); margin: 8px auto; border-radius: 2px;
}

h2 { font-size: 1.3rem; margin-bottom: 1rem; }

/* --- 关闭按钮 --- */
.close-btn {
    position: absolute;
    top: 10px; right: 15px;
    font-size: 28px;
    color: var(--pink);
    cursor: pointer;
    line-height: 1;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.close-btn:hover {
    transform: rotate(90deg) scale(1.2);
    color: var(--pink-dark);
}

.close-btn:active {
    transform: rotate(90deg) scale(0.9);
}

/* --- 成功提示 --- */
.success-msg {
    text-align: center;
    color: #2e7d32;
    padding: 20px;
}