:root {
    /* 品牌色：深藍為主，做出彩色但穩重的商務感 */
    --brand-primary: #1f3a5f;
    --brand-primary-dark: #16283f;
    --brand-tint: #eaf1fb;       /* 清淡底色，用在頁面背景 */
    --brand-tint-strong: #dbe7f8;

    --card-bg: #ffffff;
    --card-border: #d7e2f0;
    --text-main: #24303d;
    --text-muted: #62748a;
    --accent: #2f6fed;
    --accent-hover: #1f57c9;

    --danger-bg: #fdecea;
    --danger-border: #f2b8b5;
    --danger-text: #a3312a;

    --radius: 8px;
    --shadow-card: 0 2px 8px rgba(31, 58, 95, 0.10);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--brand-tint);
    color: var(--text-main);
    font-family: "Segoe UI", "Microsoft JhengHei", "PingFang TC", sans-serif;
    font-size: 15px;
}

/* --- 頂部品牌列：實色底，公司名稱＋系統名稱 --- */
.topbar {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 8px 16px;
    padding: 14px 24px;
    background: var(--brand-primary);
    color: #ffffff;
}

.brand {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 4px 10px;
}

.brand-company {
    font-weight: 700;
    letter-spacing: 0.04em;
}

.brand-logo {
    height: 30px;
    width: 30px;
    background: #ffffff;
    border-radius: 6px;
    padding: 3px;
    box-sizing: border-box;
}

.brand-system {
    font-size: 13px;
    color: #cfe0f7;
}

.nav {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px 16px;
}

.nav-toggle-checkbox {
    display: none;
}

.nav-toggle-label {
    display: none;
    cursor: pointer;
    font-size: 24px;
    line-height: 1;
    color: #ffffff;
    padding: 2px 6px;
}

.nav a {
    text-decoration: none;
    color: #eaf1fb;
    border-bottom: 1px solid transparent;
    font-size: 14px;
    white-space: nowrap;
}

.nav a:hover {
    border-bottom: 1px solid #ffffff;
    color: #ffffff;
}

.user-status {
    padding: 6px 24px;
    background: var(--brand-tint-strong);
    color: var(--text-muted);
    font-size: 13px;
    text-align: right;
    word-break: break-all;
}

/* --- 內容區 --- */
.content {
    flex: 1;
    padding: 24px;
    max-width: 960px;
    width: 100%;
    margin: 0 auto;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-card);
    padding: 24px;
    margin-bottom: 16px;
}

.card-narrow {
    max-width: 360px;
    width: 100%;
}

form label {
    display: block;
    margin-top: 12px;
    margin-bottom: 4px;
    color: var(--text-muted);
    font-size: 13px;
}

form input,
form select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    font-size: 15px;
    background: #fbfdff;
}

form input:focus,
form select:focus {
    outline: none;
    border-color: var(--accent);
    background: #ffffff;
}

button {
    margin-top: 20px;
    width: 100%;
    padding: 10px 12px;
    border: none;
    border-radius: var(--radius);
    background: var(--accent);
    color: #ffffff;
    font-weight: 600;
    box-shadow: var(--shadow-card);
    cursor: pointer;
    font-size: 15px;
}

button:hover {
    background: var(--accent-hover);
}

.flash-box {
    max-width: 960px;
    margin: 16px auto 0;
    padding: 12px 16px;
    background: var(--danger-bg);
    border: 1px solid var(--danger-border);
    border-radius: var(--radius);
    color: var(--danger-text);
}

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

.alias-msg {
    padding: 8px 12px;
    border-radius: var(--radius);
    font-size: 14px;
}

.alias-msg-ok {
    background: #e8f5ec;
    color: #1f7a3d;
    border: 1px solid #bfe6cc;
}

.alias-msg-err {
    background: var(--danger-bg);
    color: var(--danger-text);
    border: 1px solid var(--danger-border);
}

.admin-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 12px 0 20px;
}

.admin-actions button {
    margin-top: 0;
    width: auto;
    padding: 8px 16px;
    font-size: 14px;
}

.table-wrap {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.data-table th,
.data-table td {
    text-align: left;
    padding: 8px 10px;
    border-bottom: 1px solid var(--card-border);
    white-space: nowrap;
}

.data-table th {
    color: var(--text-muted);
    font-weight: 600;
}

.log-box {
    max-height: 600px;
    overflow-y: auto;
    background: #0f1b2d;
    color: #dbe7f8;
    padding: 16px;
    border-radius: var(--radius);
    font-family: "Consolas", "Courier New", monospace;
    font-size: 13px;
    white-space: pre-wrap;
    word-break: break-all;
}

/* --- 登入頁：可替換底圖的架構 ---
   把圖片放到 app/static/img/login_bg.jpg（尺寸/格式建議見 README），
   不用改這個檔案，下面這條規則會自動吃到；圖片不存在時，
   會自動退回下面的漸層色，不會整頁空白。 */
.login-page .content {
    display: flex;
    align-items: center;
    justify-content: center;
    background-image: url('../img/login_bg.jpg'),
        linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-tint-strong) 100%);
    background-size: cover, cover;
    background-position: center, center;
    border-radius: var(--radius);
}

.login-wrap {
    padding: 40px 0;
}

.login-page .card-narrow {
    box-shadow: 0 8px 24px rgba(22, 40, 63, 0.18);
}

.login-page h1 {
    font-size: 22px;
}

.lang-sep {
    color: var(--text-muted);
    font-weight: 400;
    margin: 0 4px;
}

/* --- 頁尾 --- */
.site-footer {
    text-align: center;
    padding: 16px;
    color: var(--text-muted);
    font-size: 12px;
    background: var(--brand-tint-strong);
}

/* --- 響應式斷點 --- */
/* 平板／手機共用：導覽列收進漢堡選單 */
@media (max-width: 768px) {
    .content {
        padding: 16px;
    }

    .topbar {
        padding: 12px 16px;
    }

    .brand-system {
        display: none;
    }

    .nav-toggle-label {
        display: block;
        order: 2;
    }

    .brand {
        order: 1;
    }

    .nav {
        order: 3;
        flex-basis: 100%;
        display: none;
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        margin-top: 10px;
        padding-top: 10px;
        border-top: 1px solid rgba(255, 255, 255, 0.15);
    }

    .nav-toggle-checkbox:checked ~ .nav {
        display: flex;
    }

    .nav a {
        font-size: 16px;
        padding: 4px 0;
    }

    .user-status {
        text-align: left;
        padding: 6px 16px;
    }

    .login-wrap {
        padding: 20px 0;
    }
}

/* 手機 */
@media (max-width: 480px) {
    body {
        font-size: 14px;
    }

    .topbar {
        padding: 10px 12px;
    }

    .card {
        padding: 16px;
    }

    .card-narrow {
        max-width: 100%;
    }

    .login-page h1 {
        font-size: 19px;
    }

    button {
        padding: 12px;
    }
}