/* wwwroot/css/theme-switcher.css - 合併版本 */

/* ===== CSS 變數定義 ===== */
:root {
    /* 亮色主題（預設） */
    --bg-color: #ffffff;
    --text-color: #333333;
    --border-color: #e1e5e9;
    --card-bg: #ffffff;
    --shadow: rgba(0, 0, 0, 0.1);
    /* 登入頁面專用 - 亮色主題 */
    --login-bg: #f8f9fa;
    --login-card-bg: #ffffff;
    --login-input-bg: #ffffff;
    --login-input-border: #e1e5e9;
    --login-text-primary: #333333;
    --login-text-secondary: #6c757d;
    --login-text-muted: #adb5bd;
    --login-shadow: rgba(0, 0, 0, 0.1);
    --login-gradient-start: #667eea;
    --login-gradient-end: #764ba2;
    --login-hover-shadow: rgba(102, 126, 234, 0.4);
}

/* 暗色主題 */
[data-theme="dark"] {
    /* 通用暗色主題 */
    --bg-color: #1a1a1a;
    --text-color: #e0e0e0;
    --border-color: #404040;
    --card-bg: #2d2d2d;
    --shadow: rgba(0, 0, 0, 0.3);
    /* 登入頁面專用 - 暗色主題 */
    --login-bg: #1a1f2e;
    --login-card-bg: #242938;
    --login-input-bg: #2e3444;
    --login-input-border: #3a4050;
    --login-text-primary: #ffffff;
    --login-text-secondary: #e0e0e0;
    --login-text-muted: #8892a0;
    --login-shadow: rgba(0, 0, 0, 0.3);
    --login-gradient-start: #667eea;
    --login-gradient-end: #764ba2;
    --login-hover-shadow: rgba(102, 126, 234, 0.4);
}

/* ===== 全局樣式應用 ===== */
body:not(.login-page) {
    background-color: var(--bg-color);
    color: var(--text-color);
    padding-top:70px;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* ===== 主題切換按鈕 ===== */
.theme-switcher {
    display: inline-block;
}

.theme-toggle {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px var(--shadow);
}

    .theme-toggle:hover {
        transform: scale(1.05);
        box-shadow: 0 4px 8px var(--shadow);
    }

.theme-icon {
    font-size: 18px;
    transition: transform 0.3s ease;
}

.theme-toggle:active .theme-icon {
    transform: scale(0.9);
}

/* ===== 通用元素樣式 ===== */
.card:not(.login-card),
.navbar,
.modal-content {
    background-color: var(--card-bg);
    color: var(--text-color);
    border-color: var(--border-color);
    transition: all 0.3s ease;
}

/* 表單元素（非登入頁面） */
body:not(.login-page) input,
body:not(.login-page) textarea,
body:not(.login-page) select,
body:not(.login-page) .form-control {
    background-color: var(--card-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

/* 連結 */
a:not(.login-page a) {
    color: var(--text-color);
    transition: color 0.3s ease;
}

/* 導航列 */
.navbar {
    background-color: var(--card-bg) !important;
    border-bottom: 1px solid var(--border-color);
}

.navbar-brand,
.nav-link {
    color: var(--text-color) !important;
}

/* ===== 登入頁面專用樣式 ===== */
.login-page {
    background-color: var(--login-bg);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    transition: background-color 0.3s ease;
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-card {
    background-color: var(--login-card-bg);
    border-radius: 12px;
    padding: 40px 35px;
    box-shadow: 0 10px 30px var(--login-shadow);
    transition: all 0.3s ease;
}

.logo-container {
    text-align: center;
    margin-bottom: 40px;
}

.logo {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--login-gradient-start) 0%, var(--login-gradient-end) 100%);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
}

/* 登入頁面表單樣式 */
.login-page .form-floating {
    margin-bottom: 20px;
}

    .login-page .form-floating input {
        background-color: var(--login-input-bg);
        border: 1px solid var(--login-input-border);
        color: var(--login-text-primary);
        padding-left: 45px;
        height: 55px;
        transition: all 0.3s ease;
    }

        .login-page .form-floating input:focus {
            background-color: var(--login-input-bg);
            border-color: var(--login-gradient-start);
            color: var(--login-text-primary);
            box-shadow: 0 0 0 0.25rem rgba(102, 126, 234, 0.25);
        }

    .login-page .form-floating label {
        color: var(--login-text-muted);
        padding-left: 45px;
        transition: color 0.3s ease;
    }

.input-icon {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--login-text-muted);
    z-index: 10;
    transition: color 0.3s ease;
}

.btn-login {
    background: linear-gradient(135deg, var(--login-gradient-start) 0%, var(--login-gradient-end) 100%);
    border: none;
    color: white;
    padding: 12px 0;
    font-size: 16px;
    font-weight: 500;
    border-radius: 8px;
    width: 100%;
    margin-top: 10px;
    transition: all 0.3s ease;
}

    .btn-login:hover {
        transform: translateY(-2px);
        box-shadow: 0 5px 15px var(--login-hover-shadow);
    }

.login-page .form-check {
    margin-bottom: 20px;
}

.login-page .form-check-input {
    background-color: var(--login-input-bg);
    border-color: var(--login-input-border);
    transition: all 0.3s ease;
}

    .login-page .form-check-input:checked {
        background-color: var(--login-gradient-start);
        border-color: var(--login-gradient-start);
    }

.login-page .form-check-label {
    color: var(--login-text-muted);
    font-size: 14px;
    transition: color 0.3s ease;
}

.forgot-password {
    text-align: center;
    margin-top: 20px;
}

    .forgot-password a {
        color: var(--login-text-muted);
        text-decoration: none;
        font-size: 14px;
        transition: color 0.3s ease;
    }

        .forgot-password a:hover {
            color: var(--login-gradient-start);
        }

.top-nav {
    position: absolute;
    top: 30px;
    left: 30px;
    right: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.back-link {
    color: var(--login-text-muted);
    text-decoration: none;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: color 0.3s ease;
}

    .back-link:hover {
        color: var(--login-text-primary);
    }

.signup-link {
    color: var(--login-text-muted);
    font-size: 14px;
    transition: color 0.3s ease;
}

    .signup-link a {
        color: var(--login-gradient-start);
        text-decoration: none;
        margin-left: 5px;
        transition: color 0.3s ease;
    }

        .signup-link a:hover {
            text-decoration: underline;
        }

/* 驗證碼輸入框樣式 */
.captcha-input {
    background-color: var(--login-input-bg) !important;
    border-color: var(--login-input-border) !important;
    color: var(--login-text-primary) !important;
    transition: all 0.3s ease;
}

    .captcha-input:focus {
        background-color: var(--login-input-bg) !important;
        border-color: var(--login-gradient-start) !important;
        color: var(--login-text-primary) !important;
        box-shadow: 0 0 0 0.25rem rgba(102, 126, 234, 0.25) !important;
    }

    .captcha-input::placeholder {
        color: var(--login-text-muted);
    }

/* 驗證碼圖片樣式 */
.captcha-image {
    height: 30px;
    width:70px;
    border-radius: 4px;
    border: 1px solid var(--login-input-border);
    background: #f8f9fa;
    max-width: 100%;
    transition: border-color 0.3s ease;
}

/* 暗色主題下的驗證碼圖片 */
[data-theme="dark"] .captcha-image {
    background: #2d2d2d;
    border-color: var(--login-input-border);
}

/* 驗證碼刷新按鈕樣式 */
.captcha-refresh-btn {
    background-color: transparent !important;
    border-color: var(--login-gradient-start) !important;
    color: var(--login-gradient-start) !important;
    transition: all 0.3s ease;
}

    .captcha-refresh-btn:hover {
        background-color: var(--login-gradient-start) !important;
        border-color: var(--login-gradient-start) !important;
        color: white !important;
        transform: translateY(-1px);
    }

    .captcha-refresh-btn:active {
        transform: translateY(0);
    }

/* 驗證碼容器樣式 */
.captcha-row {
    margin-bottom: 20px;
}

    .captcha-row .row {
        align-items: center;
        margin: 0;
    }

    .captcha-row [class*="col-"] {
        padding-left: 5px;
        padding-right: 5px;
    }

/* 響應式設計 */
@media (max-width: 576px) {
    .captcha-row .col-7 {
        flex: 0 0 60%;
        max-width: 60%;
    }

    .captcha-row .col-3 {
        flex: 0 0 25%;
        max-width: 25%;
    }

    .captcha-row .col-2 {
        flex: 0 0 15%;
        max-width: 15%;
    }

    .captcha-image {
        height: 32px;
    }

    .captcha-refresh-btn {
        padding: 0.25rem 0.4rem;
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    /* 極小螢幕時改為垂直排列 */
    .captcha-row .row {
        flex-direction: column;
        gap: 10px;
    }

    .captcha-row [class*="col-"] {
        flex: none;
        max-width: 100%;
        width: 100%;
    }

    .captcha-image {
        height: 40px;
        width: auto;
        max-width: 150px;
    }
}

.register-btn {
    background-color: transparent;
    border: 1px solid var(--login-gradient-start);
    color: var(--login-gradient-start);
    padding: 12px 0;
    font-size: 16px;
    font-weight: 500;
    border-radius: 8px;
    width: 100%;
    margin-top: 15px;
    transition: all 0.3s ease;
}

    .register-btn:hover {
        background-color: var(--login-gradient-start);
        color: white;
    }

.login-page .alert {
    background-color: var(--login-input-bg);
    border: 1px solid var(--login-input-border);
    color: var(--login-text-primary);
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

.login-page .alert-success {
    border-color: #28a745;
    color: #28a745;
}

.login-page .text-danger {
    color: #dc3545 !important;
    font-size: 12px;
    margin-top: 5px;
}

/* 主題切換按鈕在登入頁面的特殊定位 */
.login-page .theme-switcher {
    position: absolute;
    top: 30px;
    right: 30px;
    z-index: 1000;
}

/* 響應式設計 */
@media (max-width: 768px) {
    .top-nav {
        position: fixed; 
        top: 30px;
        left: 30px;
        right: 30px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        z-index: 100; /* 最上層 */
    }


    .login-container {
        padding: 15px;
    }

    .login-card {
        padding: 30px 25px;
    }
}