/* ── AWS 深色主題全局樣式 ── */
:root {
    --aws-bg-dark: #0f172a; /* AWS 控制台深藍灰背景 */
    --aws-card-bg: #1e293b; /* 卡片主體色 */
    --aws-border-color: #334155; /* AWS 細微邊框 */
    --aws-primary-orange: #ec7211; /* AWS 經典橘色 (Hover/Primary) */
    --aws-primary-hover: #eb5f07; /* 按鈕懸停深橘 */
    --aws-text-main: #f8fafc; /* 主要亮文字 */
    --aws-text-sub: #94a3b8; /* 次要灰色文字 */
    --aws-input-bg: #0f172a; /* 輸入框深色襯底 */
    --aws-focus-ring: #ff9900; /* 聚焦發光橘 */
}

body.aws-dark-body {
    background-color: var(--aws-bg-dark);
    color: var(--aws-text-main);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    margin: 0;
    padding: 0;
    position: relative;
    overflow-x: hidden;
}

/* AWS 科技網格幾何背景微光 */
.aws-bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-image: radial-gradient(circle at 50% 30%, rgba(236, 114, 17, 0.08) 0%, transparent 60%), linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px), linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 100% 100%, 40px 40px, 40px 40px;
    z-index: -1;
}

/* AWS 卡片容器 */
.aws-card {
    background-color: var(--aws-card-bg);
    border: 1px solid var(--aws-border-color);
    border-radius: 8px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.5);
}

/* 標題與文字樣式 */
.text-aws-title {
    color: var(--aws-text-main);
    letter-spacing: 0.5px;
}

.text-aws-subtitle {
    color: var(--aws-text-sub);
}

.text-aws-label {
    color: var(--aws-text-main);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.35rem;
}

.text-aws-footer {
    color: #64748b;
    font-size: 0.8rem;
}

/* 輸入框組 */
.aws-input-group {
    position: relative;
    display: flex;
    align-items: center;
}

    .aws-input-group .input-icon {
        position: absolute;
        left: 12px;
        color: var(--aws-text-sub);
        font-size: 1.1rem;
        z-index: 4;
    }

.aws-input {
    background-color: var(--aws-input-bg) !important;
    border: 1px solid var(--aws-border-color) !important;
    color: var(--aws-text-main) !important;
    padding-left: 38px !important;
    padding-right: 40px !important;
    height: 44px;
    border-radius: 6px;
    font-size: 0.95rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

    .aws-input::placeholder {
        color: #64748b;
    }

    .aws-input:focus {
        border-color: var(--aws-focus-ring) !important;
        box-shadow: 0 0 0 2px rgba(255, 153, 0, 0.25) !important;
        outline: none;
    }

/* 密碼眼睛開關按鈕 */
.btn-toggle-pwd {
    position: absolute;
    right: 8px;
    background: transparent;
    border: none;
    color: var(--aws-text-sub);
    padding: 6px 8px;
    cursor: pointer;
    z-index: 4;
}

    .btn-toggle-pwd:hover {
        color: var(--aws-text-main);
    }

/* AWS 橘色按鈕 */
.btn-aws-primary {
    background-color: var(--aws-primary-orange);
    border: 1px solid var(--aws-primary-orange);
    color: #ffffff;
    border-radius: 6px;
    font-size: 1rem;
    letter-spacing: 0.5px; 
}

    .btn-aws-primary:hover {
        background-color: var(--aws-primary-hover);
        border-color: var(--aws-primary-hover);
        color: #ffffff;
    }

    .btn-aws-primary:disabled {
        background-color: #475569;
        border-color: #475569;
        color: #94a3b8;
        opacity: 0.7;
    }

/* 錯誤提示框 */
.aws-alert-error {
    background-color: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.4);
    color: #fca5a5;
    border-radius: 6px;
}

/* ── 1. Login 全局深色背景 ── */
body.login-page {
    background-color: #0f172a !important; /* AWS 控制台深灰藍底色 */
    color: #f8fafc !important;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ── 2. 登入卡片容器 ── */
.login-card {
    background-color: #1e293b !important; /* 深灰藍卡片背景 */
    border: 1px solid #334155 !important;
    border-radius: 12px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
    padding: 2.5rem;
    width: 100%;
    max-width: 420px;
}

/* ── 3. Logo 白底襯底修正 (確保深色背景下 Logo 清晰) ── */
.login-logo-container {
    background-color: #ffffff !important;
    padding: 12px 20px;
    border-radius: 8px;
    display: inline-block;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* ── 4. 輸入框 (Input) 與 Icon 樣式修正 ── */
.login-card .form-control {
    background-color: #0f172a !important;
    border: 1px solid #334155 !important;
    color: #ffffff !important;
    padding: 0.75rem 1rem;
}

    .login-card .form-control::placeholder {
        color: #94a3b8 !important; /* Placeholder 文字高對比灰 */
        opacity: 1;
    }

    .login-card .form-control:focus {
        background-color: #0f172a !important;
        border-color: #ff9900 !important; /* AWS 經典橘色 Focus 外框 */
        box-shadow: 0 0 0 0.25rem rgba(255, 153, 0, 0.25) !important;
        color: #ffffff !important;
    }

/* Input Group 前綴 Icon 顏色修復 */
.login-card .input-group-text {
    background-color: #1e293b !important;
    border: 1px solid #334155 !important;
    border-right: none !important;
    color: #ff9900 !important; /* Icon 橘色亮點 */
}

.login-card .input-group .form-control {
    border-left: none !important;
}