/* ============================================================
   auth.css - 统一认证中心样式
   适用于 login.php, register.php, forgot_password.php, reset_password.php
   ============================================================ */

/* ===== 基础重置 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    background: linear-gradient(135deg, #0f1f3d 0%, #1a3c6e 40%, #2a5a8a 70%, #4A90D9 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

/* ===== 认证盒子 ===== */
.auth-box {
    background: rgba(255, 255, 255, 0.98);
    padding: 40px 38px;
    border-radius: 20px;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.4);
    width: 100%;
    max-width: 420px;
    backdrop-filter: blur(10px);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.auth-box:hover {
    transform: translateY(-2px);
    box-shadow: 0 30px 90px rgba(0, 0, 0, 0.5);
}

/* ===== Logo 和标题 ===== */
.auth-box .logo {
    text-align: center;
    font-size: 52px;
    margin-bottom: 4px;
    line-height: 1.2;
}

.auth-box .logo-text {
    text-align: center;
    font-size: 14px;
    color: #4A90D9;
    font-weight: 600;
    letter-spacing: 4px;
    margin-bottom: 2px;
}

.auth-box h1 {
    text-align: center;
    color: #1a3c6e;
    font-size: 24px;
    font-weight: 700;
    margin-top: 4px;
    letter-spacing: 1px;
}

.auth-box .sub {
    text-align: center;
    color: #999;
    font-size: 14px;
    margin-bottom: 28px;
    margin-top: 4px;
}

/* ===== 表单 ===== */
.auth-box .form-group {
    margin-bottom: 18px;
}

.auth-box .form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 6px;
    color: #333;
    font-size: 14px;
}

.auth-box .form-group input,
.auth-box .form-group select {
    width: 100%;
    padding: 11px 15px;
    border: 2px solid #e8ecf1;
    border-radius: 10px;
    font-size: 15px;
    transition: all 0.3s ease;
    box-sizing: border-box;
    background: #fafbfc;
    color: #333;
}

.auth-box .form-group input:focus,
.auth-box .form-group select:focus {
    border-color: #4A90D9;
    outline: none;
    background: #fff;
    box-shadow: 0 0 0 4px rgba(74, 144, 217, 0.15);
}

.auth-box .form-group input::placeholder {
    color: #bbb;
}

.auth-box .form-group .hint {
    font-size: 12px;
    color: #999;
    margin-top: 4px;
}

/* ===== 记住我 ===== */
.remember-me {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: #666;
    cursor: pointer;
}

.remember-me input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: #4A90D9;
    cursor: pointer;
}

/* ===== 按钮 ===== */
.auth-box .btn-submit {
    width: 100%;
    padding: 13px;
    background: linear-gradient(135deg, #4A90D9, #357ABD);
    color: #fff;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    letter-spacing: 1px;
}

.auth-box .btn-submit:hover {
    background: linear-gradient(135deg, #357ABD, #2a5a8a);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(74, 144, 217, 0.35);
}

.auth-box .btn-submit:active {
    transform: translateY(0);
}

.auth-box .btn-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* ===== 成功/错误消息 ===== */
.auth-box .error {
    color: #dc3545;
    background: #fde8ea;
    padding: 12px 15px;
    border-radius: 10px;
    margin-bottom: 18px;
    font-size: 14px;
    text-align: center;
    border-left: 4px solid #dc3545;
}

.auth-box .success {
    color: #155724;
    background: #d4edda;
    padding: 12px 15px;
    border-radius: 10px;
    margin-bottom: 18px;
    font-size: 14px;
    text-align: center;
    border-left: 4px solid #28a745;
    word-break: break-all;
}

.auth-box .success a {
    color: #1a3c6e;
    font-weight: 600;
    text-decoration: underline;
}

.auth-box .success a:hover {
    color: #4A90D9;
}

/* ===== 链接 ===== */
.auth-box .links {
    text-align: center;
    margin-top: 18px;
    font-size: 14px;
    color: #888;
}

.auth-box .links a {
    color: #4A90D9;
    text-decoration: none;
    margin: 0 6px;
    font-weight: 500;
    transition: color 0.2s;
}

.auth-box .links a:hover {
    color: #1a3c6e;
    text-decoration: underline;
}

.auth-box .links .divider {
    color: #ddd;
    margin: 0 4px;
}

/* ===== 页脚 ===== */
.auth-box .footer {
    text-align: center;
    margin-top: 20px;
    font-size: 12px;
    color: #ccc;
    border-top: 1px solid #f0f0f0;
    padding-top: 16px;
}

.auth-box .footer .version {
    color: #ddd;
}

/* ===== 安全标识 ===== */
.auth-box .security-badge {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    margin-top: 16px;
    font-size: 12px;
    color: #bbb;
}

.auth-box .security-badge .icon {
    font-size: 14px;
}

/* ===== 响应式 ===== */
@media (max-width: 480px) {
    .auth-box {
        padding: 28px 20px;
        border-radius: 16px;
    }

    .auth-box .logo {
        font-size: 40px;
    }

    .auth-box h1 {
        font-size: 20px;
    }

    .auth-box .form-group input,
    .auth-box .form-group select {
        padding: 10px 12px;
        font-size: 14px;
    }

    .auth-box .btn-submit {
        padding: 12px;
        font-size: 15px;
    }

    .auth-box .links {
        font-size: 13px;
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 4px;
    }

    .auth-box .links .divider {
        display: none;
    }

    .auth-box .security-badge {
        flex-wrap: wrap;
        gap: 6px;
    }
}

@media (max-width: 360px) {
    .auth-box {
        padding: 20px 14px;
    }

    .auth-box h1 {
        font-size: 18px;
    }

    .auth-box .sub {
        font-size: 13px;
    }

    .auth-box .form-group input {
        font-size: 13px;
        padding: 8px 10px;
    }
}

/* ===== 暗色模式适配（可选） ===== */
@media (prefers-color-scheme: dark) {
    body {
        background: linear-gradient(135deg, #0a1628 0%, #0f1f3d 40%, #1a3c6e 70%, #2a5a8a 100%);
    }

    .auth-box {
        background: rgba(30, 40, 60, 0.95);
        box-shadow: 0 25px 80px rgba(0, 0, 0, 0.6);
    }

    .auth-box h1 {
        color: #e8edf5;
    }

    .auth-box .sub {
        color: #8899bb;
    }

    .auth-box .form-group label {
        color: #ccd5e0;
    }

    .auth-box .form-group input,
    .auth-box .form-group select {
        background: #1a2a3a;
        border-color: #2a3a5a;
        color: #e8edf5;
    }

    .auth-box .form-group input:focus,
    .auth-box .form-group select:focus {
        border-color: #4A90D9;
        background: #1a2a3a;
        box-shadow: 0 0 0 4px rgba(74, 144, 217, 0.2);
    }

    .auth-box .form-group input::placeholder {
        color: #556688;
    }

    .auth-box .error {
        background: #2a1520;
        color: #f08080;
        border-left-color: #dc3545;
    }

    .auth-box .success {
        background: #0a2a1a;
        color: #80d0a0;
        border-left-color: #28a745;
    }

    .auth-box .success a {
        color: #4A90D9;
    }

    .auth-box .links a {
        color: #4A90D9;
    }

    .auth-box .links a:hover {
        color: #7ab0e8;
    }

    .auth-box .links {
        color: #667799;
    }

    .auth-box .footer {
        color: #445566;
        border-top-color: #2a3a5a;
    }

    .remember-me {
        color: #8899bb;
    }

    .auth-box .security-badge {
        color: #556688;
    }

    .auth-box .logo-text {
        color: #4A90D9;
    }
}