:root {
    --apple-blue: #0071e3;
    --apple-grey: #f5f5f7;
    --apple-text-dark: #1d1d1f;
    --apple-text-grey: #86868b;
    --bg-color: #fff;
    --card-bg: #fff;
    --border-color: #d2d2d7;
    --shadow-color: rgba(0, 0, 0, 0.08);
    --input-bg: #fff;

    --container-min-width: 450px;
    --container-min-height: 600px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --apple-grey: #1c1c1e;
        --apple-text-dark: #f5f5f7;
        --apple-text-grey: #98989d;
        --bg-color: #000;
        --card-bg: #1c1c1e;
        --border-color: #38383a;
        --shadow-color: rgba(0, 0, 0, 0.3);
        --input-bg: #2c2c2e;
    }
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--apple-text-dark);
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.login-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-card {
    max-width: var(--container-min-width);
    width: 100%;
    text-align: center;
}

.login-card-inner {
    background-color: var(--card-bg);
    padding: 40px;
    border-radius: 18px;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 12px var(--shadow-color);
    min-width: var(--container-min-width);
    min-height: var(--container-min-height);
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    position: relative;
    overflow: hidden;
}

.wake-logo {
    font-size: 3.5rem;
    margin-bottom: 1rem; /* Adjusted margin */
}

.login-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0; /* Removed margin to group with header */
}

.form-floating > .form-control {
    border-radius: 8px;
    border-color: var(--border-color);
    margin-bottom: 0px;
    background-color: var(--input-bg) !important;
    color: var(--apple-text-dark) !important;
}   

.form-floating > .form-control:focus {
    border-color: var(--apple-text-dark);
    outline: 4px solid rgba(0, 113, 227, 0.1);
}

/* 1. 當輸入框被點擊 (Focus) 時：標籤變藍色 */
.form-floating > .form-control:focus ~ label {
    color: var(--apple-text-dark) !important;
    opacity: 1; /* 確保顏色飽和 */
}

/* 2. 當輸入框有文字 (無論是否 Focus) 時：確保背景跟隨輸入框顏色，且文字顏色正確 */
.form-floating > .form-control:focus ~ label::after,
.form-floating > .form-control:not(:placeholder-shown) ~ label::after {
    background-color: var(--input-bg) !important;
}

/* 3. 當輸入框有文字但「失去焦點」時：文字變回深色(或白色)，確保可讀性 */
.form-floating > .form-control:not(:placeholder-shown) ~ label {
    color: var(--apple-text-dark) !important;
}

/* Group inputs like Apple's stacked fields */
.input-group-stacked .form-floating:first-child .form-control {
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
    border-bottom: 0;
}

.input-group-stacked .password-wrapper {
    position: relative;
}

/* 確保密碼輸入框下方有圓角 */
#password {
    border-top-left-radius: 0 !important;
    border-top-right-radius: 0 !important;
    border-bottom-left-radius: 8px !important;
    border-bottom-right-radius: 8px !important;
    padding-right: 50px;
    border-bottom: 1px solid var(--border-color) !important;
}

.btn-signin-inline {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 5;
    background: none;
    border: none;
    color: var(--apple-text-grey);
    padding: 0;
    transition: color 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-signin-inline:hover {
    color: var(--apple-text-dark);
}

/* 轉圈圈動畫 */
.spinning {
    animation: spin 1s linear infinite;
}

.spinner {
    border: 2px solid var(--border-color);
    border-top: 2px solid var(--apple-blue);
    border-radius: 50%;
    width: 24px;
    height: 24px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Elevate the focused input to prevent its shadow from being clipped by siblings */
.input-group-stacked .form-floating {
    position: relative;
}

/* 當輸入框獲得焦點或有文字時，按鈕變為藍色 */
.form-control:focus ~ .btn-signin-inline,
.form-control:not(:placeholder-shown) ~ .btn-signin-inline {
    color: var(--apple-blue);
}

.keep-signed-in {
    margin-top: 1.5rem;
    font-size: 0.9rem;
    color: var(--apple-text-grey);
}

/* Footer Styles */
footer {
    padding: 20px;
    font-size: 0.75rem;
    color: var(--apple-text-grey);
    border-top: 1px solid var(--border-color);
    background-color: var(--apple-grey);
}

.footer-links a {
    color: var(--apple-text-grey);
    text-decoration: none;
    margin: 0 10px;
}

/* List Container Styles */
.list-container {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: var(--card-bg);
    padding: 40px;
    border-radius: 18px;
    border: none;
    box-shadow: 0 4px 12px var(--shadow-color);
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    opacity: 0;
    transition: transform 0.6s ease-in-out, opacity 0.6s ease-in-out;
    pointer-events: none;
}

.list-container.active {
    transform: translateX(0);
    opacity: 1;
    pointer-events: auto;
}

.login-form.hidden {
    transform: translateX(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s ease-in-out, opacity 0.3s ease-in-out;
}

.login-card-inner {
    position: relative;
}

.list-header {
    margin-bottom: 30px;
}

.list-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
}

.device-list-container {
    position: relative;
    flex: 1;
    overflow: hidden;
}

.device-list {
    list-style: none;
    padding: 0;
    margin: 0;
    flex: 1;
    overflow-y: auto;
}

.device-list-loading {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
    visibility: visible;
    transition: opacity 0.2s ease, visibility 0.2s ease;
    pointer-events: auto;
    z-index: 1;
    background-color: var(--card-bg);
}

.device-list-loading.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.loading-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
}

.list-item {
    width: 100%;
    padding: 20px 16px;
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.2s ease;
    cursor: pointer;
    display: flex;
}

.list-item:last-child {
    border-bottom: none;
}

.list-item:hover {
    background-color: var(--apple-grey);
}

.list-item-content {
    display: flex;
    align-items: center;
    gap: 16px;
    width: 100%;
}

.list-item-content i {
    font-size: 1.5rem;
    color: var(--apple-text-dark);
}

.list-item-text {
    flex: 1;
}

.list-item-text h3 {
    font-size: 1rem;
    font-weight: 500;
    margin: 0 0 4px 0;
    color: var(--apple-text-dark);
}

.list-item-text p {
    font-size: 0.875rem;
    margin: 0;
    color: var(--apple-text-grey);
}

.list-item-spinner {
    min-width: 30px;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: 12px;
    flex-shrink: 0;
    position: relative;
}

.list-item-spinner .ispinner {
    position: absolute;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.2s ease, visibility 0.2s ease;
}

.list-item-spinner.active .ispinner {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.status-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transition: opacity 0.2s ease, visibility 0.2s ease;
    box-shadow: 0 0 4px rgba(0, 0, 0, 0.2);
}

.list-item-spinner.active .status-indicator {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.status-indicator[data-online="true"] {
    background-color: #34c759;
}

.status-indicator[data-online="false"] {
    background-color: #ff3b30;
}

/* List Actions */
.list-actions {
    display: flex;
    gap: 12px;
    margin-top: 20px;
    justify-content: space-around;
}

.btn-action {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--card-bg);
    color: var(--apple-text-dark);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    max-width: 150px;
}

.btn-action:hover {
    background-color: var(--apple-grey);
    border-color: var(--apple-blue);
}

.btn-action i {
    font-size: 1rem;
}

.btn-logout {
    color: #ff3b30;
}

.btn-logout:hover {
    border-color: #ff3b30;
}

.footer-links a:hover {
    text-decoration: underline;
}

@media (max-width: 576px) {
    .login-container {
        padding: 0;
    }

    .login-card {
        max-width: 100%;
        height: 100%;
    }

    .login-card-inner {
        width: 100%;
        height: 100%;
        min-height: 0;
        border-radius: 0;
        border: none;
        box-shadow: none;
        padding: 20px;
        justify-content: center; /* Center content on mobile for better look */
    }

    .login-header {
        margin-bottom: 40px;
    }

    :root {
        --container-min-width: 0px;
        --container-min-height: 0px;
    } 
}