/* ===== 用户端样式 v30 - 现代化设计 ===== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 50%, #a855f7 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    background: white;
    padding: 2.5rem;
    border-radius: 18px;
    box-shadow: 0 20px 60px rgba(79, 70, 229, 0.25);
    width: 100%;
    max-width: 460px;
    animation: fadeInUp 0.5s ease-out;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}

h1 {
    text-align: center;
    color: #4f46e5;
    margin-bottom: 0.3rem;
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

h2 {
    text-align: center;
    color: #374151;
    margin-bottom: 1.5rem;
    font-size: 1.15rem;
    font-weight: 600;
}

.form-container {
    width: 100%;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    color: #374151;
    font-weight: 600;
    font-size: 14px;
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="tel"] {
    width: 100%;
    padding: 12px 14px;
    border: 1.5px solid #e5e7eb;
    border-radius: 10px;
    font-size: 15px;
    transition: all 0.22s ease;
    background: #ffffff !important;
    font-family: inherit;
    color: #1f2937;
}

/* 覆盖浏览器自动填充黄色背景 */
.form-group input:-webkit-autofill,
.form-group input:-webkit-autofill:hover,
.form-group input:-webkit-autofill:focus,
.form-group input:-webkit-autofill:active {
    -webkit-box-shadow: 0 0 0 30px #ffffff inset !important;
    -webkit-text-fill-color: #1f2937 !important;
    transition: background-color 5000s ease-in-out 0s;
}

.form-group input:focus {
    outline: none;
    border-color: #4f46e5;
    background: white;
    box-shadow: 0 0 0 4px rgba(79,70,229,0.10);
}

button[type="submit"],
button:not(.btn-edit):not(.btn-delete):not(.btn-save):not(.btn-cancel):not(.btn-export):not(.btn-refresh) {
    width: 100%;
    padding: 13px;
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s ease;
    letter-spacing: 0.3px;
}

button[type="submit"]:hover,
button:not(.btn-edit):not(.btn-delete):not(.btn-save):not(.btn-cancel):not(.btn-export):not(.btn-refresh):hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 24px rgba(79,70,229,0.35);
}

button[type="submit"]:active,
button:not(.btn-edit):not(.btn-delete):not(.btn-save):not(.btn-cancel):not(.btn-export):not(.btn-refresh):active {
    transform: translateY(0);
}

p {
    text-align: center;
    margin-top: 1.1rem;
    color: #6b7280;
    font-size: 14px;
}

p a {
    color: #4f46e5;
    font-weight: 500;
    text-decoration: none;
}

p a:hover {
    text-decoration: underline;
}

/* 用户信息栏 */
.user-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.8rem;
    padding: 14px 18px;
    background: linear-gradient(135deg, #eef2ff, #ede9fe);
    border-radius: 12px;
    gap: 8px;
    flex-wrap: wrap;
}

.user-info span {
    font-weight: 600;
    color: #374151;
    font-size: 14px;
}

.user-info button {
    width: auto;
    padding: 7px 16px;
    background: white !important;
    color: #dc2626 !important;
    border: 1.5px solid #fecaca !important;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: none;
    letter-spacing: 0;
    transform: none;
}

.user-info button:hover {
    background: #fef2f2 !important;
    border-color: #fca5a5 !important;
}

/* 消息提示 */
#message {
    margin-top: 1rem;
    padding: 12px 16px;
    border-radius: 10px;
    text-align: center;
    display: none;
    font-size: 14px;
    font-weight: 500;
}

#message.success {
    background: #ecfdf5;
    color: #065f46;
    border: 1px solid #a7f3d0;
    display: block;
}

#message.error {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
    display: block;
}

/* 已报名状态区域 */
#registeredSection {
    text-align: center;
}