/* ================================================
   校友會身份驗證頁面共享樣式
   Authentication Pages Shared Styles
   ================================================ */

/* 基礎容器樣式 */
.auth-container {
    max-width: 500px;
    margin: 40px auto;
    padding: 0 15px;
}

.auth-container.logout {
    margin: 60px auto;
    text-align: center;
}

/* 標題區域 */
.auth-header {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 20px;
    border-bottom: 3px solid #9b59b6;
}

.auth-header h1 {
    color: #2c3e50;
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 10px;
}

.auth-header p {
    color: #7f8c8d;
    font-size: 14px;
    margin: 0;
}

/* 表單卡片 */
.auth-form {
    background: #f8f9fa;
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

/* 浮動標籤表單元素 */
.form-floating > .form-control {
    border-color: #ddd;
    background-color: white;
    transition: all 0.3s ease;
}

.form-floating > .form-control:focus {
    border-color: #9b59b6;
    box-shadow: 0 0 0 0.2rem rgba(155, 89, 182, 0.25);
}

.form-floating > label {
    color: #555;
    font-size: 13px;
}

/* 按鈕樣式 */
.auth-button {
    border: none;
    border-radius: 6px;
    padding: 12px;
    font-size: 16px;
    font-weight: 600;
    margin-top: 15px;
    transition: all 0.3s ease;
}

/* 登入按鈕 - 紫色 */
.login-button {
    background: linear-gradient(135deg, #9b59b6 0%, #8e44ad 100%);
    color: white;
}

.login-button:hover {
    background: linear-gradient(135deg, #8e44ad 0%, #7d3e91 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(155, 89, 182, 0.3);
}

/* 註冊按鈕 - 綠色 */
.register-button {
    background: linear-gradient(135deg, #27ae60 0%, #229954 100%);
    color: white;
}

.register-button:hover {
    background: linear-gradient(135deg, #229954 0%, #1e8449 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(39, 174, 96, 0.3);
}

/* 登出按鈕 - 紅色 */
.logout-button {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: white;
    padding: 12px 30px;
    display: inline-block;
    text-decoration: none;
}

.logout-button:hover {
    background: linear-gradient(135deg, #c0392b 0%, #a93226 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(231, 76, 60, 0.3);
}

/* 複選框樣式 */
.form-check-input {
    border-color: #ddd;
    transition: all 0.3s ease;
}

.form-check-input:checked {
    background-color: #9b59b6;
    border-color: #9b59b6;
}

/* 驗證訊息 */
.alert-danger {
    background-color: #f8d7da;
    border-color: #f5c6cb;
    color: #721c24;
    border-radius: 6px;
    padding: 12px 20px;
}

.alert-success {
    background-color: #d4edda;
    border-color: #c3e6cb;
    color: #155724;
    border-radius: 6px;
    padding: 12px 20px;
    text-align: center;
}

.text-danger {
    color: #e74c3c !important;
    font-size: 13px;
    margin-top: 4px;
}

/* 頁面連結區域 */
.auth-links {
    margin-top: 25px;
    text-align: center;
}

.auth-links a {
    display: block;
    color: #9b59b6;
    text-decoration: none;
    font-size: 14px;
    padding: 8px 0;
    transition: all 0.3s ease;
}

.auth-links a:hover {
    color: #7d3e91;
    text-decoration: underline;
}

/* 頁面底部安全訊息 */
.auth-footer {
    text-align: center;
    margin-top: 30px;
    color: #95a5a6;
    font-size: 12px;
}

.auth-footer p {
    margin: 8px 0;
}

/* 密碼要求提示框 */
.password-requirements {
    background: #e8f4f8;
    border-left: 4px solid #3498db;
    padding: 15px;
    border-radius: 4px;
    margin-bottom: 20px;
    font-size: 13px;
    color: #2c3e50;
}

.password-requirements h5 {
    color: #2980b9;
    margin-bottom: 10px;
    font-size: 14px;
    margin-top: 0;
}

.password-requirements ul {
    margin: 0;
    padding-left: 20px;
}

.password-requirements li {
    margin-bottom: 5px;
}

/* 登出卡片特殊樣式 */
.logout-card {
    background: #f8f9fa;
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.logout-message {
    font-size: 16px;
    color: #2c3e50;
    margin-bottom: 20px;
    line-height: 1.6;
}

.logout-message i {
    color: #27ae60;
    font-size: 24px;
    margin-bottom: 15px;
    display: block;
}

/* 登出表單 */
.logout-form {
    display: inline-block;
}

/* 登出連結 */
.logout-links {
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px solid #ddd;
}

.logout-links a {
    color: #9b59b6;
    text-decoration: none;
    font-size: 14px;
    display: inline-block;
    margin: 0 10px;
    transition: all 0.3s ease;
}

.logout-links a:hover {
    color: #7d3e91;
    text-decoration: underline;
}

/* 響應式設計 */
@media (max-width: 576px) {
    .auth-container {
        margin: 20px auto;
    }

    .auth-header {
        margin-bottom: 30px;
    }

    .auth-header h1 {
        font-size: 24px;
    }

    .auth-form,
    .logout-card {
        padding: 20px;
    }

    .auth-links a {
        padding: 6px 0;
    }

    .logout-links a {
        display: block;
        margin: 10px 0;
    }
}

/* 深色模式支援 */
@media (prefers-color-scheme: dark) {
    .auth-form,
    .logout-card {
        background: #2c3e50;
        color: #ecf0f1;
    }

    .form-floating > .form-control {
        background-color: #34495e;
        color: #ecf0f1;
        border-color: #555;
    }

    .form-floating > label {
        color: #bdc3c7;
    }

    .password-requirements {
        background: #34495e;
        border-left-color: #3498db;
        color: #ecf0f1;
    }

    .password-requirements h5 {
        color: #5dade2;
    }
}