/* --- 全局樣式 --- */
:root {
    --primary-color: #374151;
    --primary-hover: #1f2937;
    --secondary-color: #6b7280;
    --secondary-hover: #4b5563;
    --background-color: #f9fafb;
    --card-bg: #ffffff;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --border-color: #e5e7eb;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-primary);
    margin: 0;
    padding: 0; /* 移除所有 padding */
    display: flex;
    justify-content: center;
    align-items: center; 
    min-height: 100svh; /* 使用最小可視區域高度，避免瀏覽器 UI 造成捲動 */
    text-align: center;
}

/* --- 主容器 --- */
.container {
    width: 100%;
    max-width: 420px;
    padding: 24px;
    background: var(--card-bg);
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    margin: 15px; /* 在容器周圍加上邊距，而不是在 body 上 */
    transition: all 0.2s ease;
}

h1 {
    color: var(--text-primary);
    margin: 0 0 8px 0;
    font-weight: 700;
    font-size: 26px;
    letter-spacing: -0.025em;
}
#login-view h1 {
    margin: 0 0 20px 0;
}

p {
    color: var(--text-secondary);
    margin: 0 0 24px 0;
    font-size: 15px;
    line-height: 1.5;
    transition: color 0.3s ease-in-out;
}

/* --- 按鈕通用樣式 --- */
.btn {
    width: 100%;
    padding: 14px 20px; 
    font-size: 22px;
    font-weight: 500;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    background: var(--card-bg);
    color: var(--text-primary);
    transition: all 0.2s ease;
    margin-bottom: 15px; 
    box-shadow: var(--shadow);
}

.btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-1px);
}

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

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    background-color: #e5e7eb;
    color: var(--text-secondary);
    border-color: var(--border-color);
}
.btn:disabled:hover {
    background-color: #e5e7eb;
    color: var(--text-secondary);
    border-color: var(--border-color);
}

/* --- 特定按鈕樣式 --- */
.btn-login {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0px; 

}

.btn-login-icon {
    width: 20px;
    height: 20px;
    margin-right: 12px;
}

.btn-door {
    padding: 10px 16px; 
    font-size: 40px;
	background-color: #F3F4F6; /* [更新] 質感淺灰色 */
    white-space: nowrap; /* 限制文字不換行 */
}

/* 登出按鈕樣式 */
.btn-logout {
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 500;
    color: white;
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    margin-top: 16px; 
	margin-bottom: 0px; 
}

.btn-logout:hover {
    background-color: var(--secondary-hover);
    border-color: var(--secondary-hover);
}

/* --- DEBUG 登入按鈕 --- */
.btn-debug-login {
    margin-top: 15px;
    background-color: #fef2f2;
    color: #991b1b;
    border-color: #fecaca;
}
.btn-debug-login:hover {
    background-color: #fee2e2;
    border-color: #fca5a5;
    color: #991b1b;
    transform: translateY(-1px); /* 保持與其他按鈕一致的 hover 效果 */
}

/* --- 安裝說明連結 --- */
.install-guide-link {
    display: block;
    margin-top: 25px;
    font-size: 14px;
    color: var(--text-secondary);
    text-decoration: none;
}
.install-guide-link:hover {
    text-decoration: underline;
    color: var(--text-primary);
}

/* --- 彈出式視窗 (Modal) --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    padding: 15px;
}

.modal-content {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 12px;
    width: 100%;
    max-width: 500px;
    box-shadow: var(--shadow-lg);
    text-align: left;
}

.modal-title {
    margin-top: 0;
    margin-bottom: 20px;
    text-align: center;
}

.install-instructions .platform-guide {
    margin-bottom: 20px;
}
.install-instructions h3 {
    font-size: 18px;
    margin-top: 0;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.install-instructions p,
.install-instructions ol {
    font-size: 15px;
    color: var(--text-secondary);
    padding-left: 20px;
    margin-top: 0;
}

.modal-actions {
    margin-top: 20px;
}


/* --- 按鈕焦點效果 --- */
.btn:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* --- 控制按鈕圖標 --- */
.btn-icon {
    margin-right: 8px;
	margin-left: 8px;
    font-size: 40px;
    vertical-align: middle;
}

/* --- 區塊顯示/隱藏 --- */
.hidden {
    display: none;
}

/* --- 警告訊息樣式 --- */
.warning-notice {
    background-color: #FEF2F2; /* 淡紅色背景 */
    color: #991B1B;  /* [更新] 深紅色文字 */
    padding: 10px 14px; 
    border-radius: 8px;
    margin-bottom: 15px; 
    font-size: 13px; 
    text-align: left;
    display: flex;
    align-items: center;
    line-height: 1.5;
}

.warning-notice .mdi {
    font-size: 20px;
    margin-right: 10px;
}

/* --- 提示訊息樣式 --- */
.info-notice {
    background-color: #eef2ff;
    color: #4338ca;
    padding: 10px 14px; 
    border-radius: 8px;
    margin-bottom: 15px; 
    font-size: 13px; 
    text-align: left;
    display: flex;
    align-items: center;
    line-height: 1.5;
}

.info-notice .mdi {
    font-size: 20px;
    margin-right: 10px;
}

/* --- 載入動畫 --- */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.container {
    animation: fadeIn 0.6s ease-out;
}