.container.page-title {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 500;
}



/* --- 顏色與變數設定 --- */
:root {
    --primary-color: #2D3142;    /* 深灰藍字體 */
    --success-color: #4CAF50;    /* 質感綠 */
    --danger-color: #E57373;     /* 柔和紅 */
    --bg-main: #F2F4F7;          /* 背景改為圖中的極淺灰 */
    --card-bg: #FFFFFF;
    --text-muted: #9DA3B4;
    --radius-lg: 24px;           /* 超大圓角 */
    --soft-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

/* --- 整體版面 --- */
body {
    background-color: var(--bg-main);
    font-family: 'Inter', "SF Pro Text", "SF Pro Display", "Microsoft JhengHei", sans-serif;
    color: var(--primary-color);
    letter-spacing: -0.01em;
}

/* --- 導覽列 --- */
.navbar {
    background-color: transparent !important;
    padding-top: 15px;
}
.navbar-brand {
    color: var(--primary-color) !important;
    font-size: 1.1rem;
    font-weight: 700;
}

/* --- 核心主卡片樣式 (預警用) --- */
.main-balance-card {
    /*background: linear-gradient(135deg, #2D3142 0%, #4F5D75 100%) !important;*/
    color: #000 !important;
}

.main-balance-card h1 {
    color: #000 !important;
    font-size: 2.8rem;
    font-weight: 800;
}

.text-success-light { color: #A5D6A7; }
.text-danger-light { color: #EF9A9A; }

.credit-warning-box {
    background: rgb(229 229 229);
    /* border: 1px solid rgba(255, 209, 102, 0.3); */
    border-radius: 16px;
    padding: 12px;
    margin-top: 5px;
}

.warning-amount {
    color: #000;
    font-size: 1.3rem;
}

/* --- 卡片設計 --- */
.card-custom {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    border: none;
    box-shadow: var(--soft-shadow);
    padding: 1.5rem !important;
    margin-bottom: 20px;
}

/* --- 帳戶卡片樣式 (每行兩個) --- */
.account-card {
    background: var(--card-bg);
    border: none;
    border-radius: 20px !important;
    padding: 15px !important;
    box-shadow: 0 4px 15px rgba(0,0,0,0.03);
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    text-decoration: none !important;
    transition: transform 0.2s ease;
}

.account-card.liability {
    /*background: #FFF9F9; /* 淡粉背景提醒債務 */*/
    /*border-bottom: 4px solid var(--danger-color);*/
}

.account-card.asset {
    /*border-bottom: 4px solid var(--success-color);*/
}

.account-card:active { transform: scale(0.95); }

.account-card .acc-name {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.account-card .acc-balance {
    font-size: 1.1rem;
    font-weight: 800;
}

/* --- 快速按鈕 --- */
.btn-quick {
    border-radius: 18px;
    padding: 0.8rem;
    font-weight: 700;
    font-size: 0.95rem;
    border: none;
}
.btn-danger { background-color: var(--danger-color); }
.btn-success { background-color: var(--success-color); }

/* --- 功能選單 --- */
.nav-box {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    padding: 12px;
    border-radius: 20px;
    box-shadow: var(--soft-shadow);
    display: flex;
    justify-content: space-around;
    margin-bottom: 1.5rem;
}

.nav-link-custom {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.85rem;
    text-decoration: none;
}

/* --- 待繳清單 --- */
.pending-item {
    border-radius: 18px !important;
    border: none !important;
    box-shadow: 0 4px 10px rgba(0,0,0,0.02);
}