:root {
    --header-height: 60px;
    --main-blue: #248dfd;
    --main-green: #7dd894;
    --main-red: #ff5328;
    --card-bg-opacity: 0.2;
    --card-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
    --card-border: 1px solid rgba(255, 255, 255, 0.3);
}

body {
    margin: 0;
    padding: 0;
    background: url('/assets/img/bg.png') no-repeat center center fixed;
    background-size: cover;
    color: #333;
}

.main-content-wrapper-remote {
    padding-top: var(--header-height);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-bottom: 50px;
}


.container-remote {
    width: 90%;
    max-width: 480px;
    padding: 0 20px;
}

.card-remote {
    background-color: rgba(255, 255, 255, var(--card-bg-opacity));
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: var(--card-border);
    padding: 30px;
    text-align: center;
    margin-bottom: 20px;
}

h2 {
    margin-top: 0;
    margin-bottom: 20px;
    font-weight: 500;
    color: #1a1a1a;
}

/* 避免与 nav.css 中的 input 冲突 */
.remote-input {
    width: 100%;
    padding: 12px;
    margin-bottom: 15px;
    border-radius: 8px;
    box-sizing: border-box;
    font-size: 16px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    background-color: rgba(255, 255, 255, 0.95);
    color: #333;
    text-transform: uppercase;
}

/* 避免与 nav.css 中的 button 冲突 */
.remote-button-primary {
    width: 100%;
    padding: 12px;
    margin-bottom: 15px;
    border-radius: 8px;
    box-sizing: border-box;
    font-size: 16px;
    border: none;
    background-color: var(--main-blue);
    color: white;
    cursor: pointer;
    font-weight: 600;
    box-shadow: 0 2px 4px rgba(0, 122, 255, 0.4);
    transition: all 0.2s;
}

.remote-button-secondary {
    background-color: var(--main-red);
    margin-top: 10px;
    box-shadow: 0 2px 4px rgba(255, 59, 48, 0.4);
}

.remote-button-primary:active,
.remote-button-secondary:active {
    transform: translateY(1px);
    box-shadow: 0 1px 2px rgba(0, 122, 255, 0.4);
}


.control-panel {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    gap: 15px;
    margin-top: 20px;
}

.control-btn {
    width: 45%;
    padding: 20px 10px;
    font-size: 1.2em;
    font-weight: 600;
    cursor: pointer;
    color: white;
    border: none;
    border-radius: 12px;
    transition: all 0.2s;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.control-btn.next-slide {
    background-color: var(--main-green);
}

.control-btn.prev-slide {
    background-color: var(--main-blue);
}

.control-btn.blank-screen {
    background-color: var(--main-red);
}

.control-btn.pointer-mode {
    background-color: #f7b731;
}

.control-btn:active {
    transform: translateY(2px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

#projector-status-box {
    border: 2px solid var(--main-blue);
    padding: 20px;
    border-radius: 10px;
    background-color: rgba(0, 122, 255, 0.05);
}

.alert-error {
    color: var(--main-red);
    font-weight: bold;
    margin-top: 10px;
}

#status-remote {
    margin-top: 15px;
    padding: 15px;
    background-color: rgba(245, 245, 245, 0.9);
    border-radius: 8px;
    text-align: left;
    white-space: pre-wrap;
    word-break: break-all;
    border: 1px solid rgba(0, 0, 0, 0.05);
    font-size: 14px;
    max-height: 150px;
    overflow-y: auto;
}