/* ===== 投屏连接页样式（复用 index.css 主题变量与基础组件） ===== */

.back-link {
    color: var(--muted);
    font-size: 14px;
    transition: color 0.2s;
    white-space: nowrap;
}

.back-link:hover { color: var(--accent); }

.cast-page {
    min-height: calc(100vh - 64px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 56px 0 72px;
    background:
        radial-gradient(ellipse 70% 50% at 50% 0%, rgba(232, 179, 65, 0.07), transparent 60%),
        var(--bg-deep);
}

.cast-card {
    width: 100%;
    max-width: 440px;
    margin: 0 auto;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px 36px;
    text-align: center;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5), 0 0 40px rgba(232, 179, 65, 0.08);
}

.cast-badge {
    display: inline-block;
    font-size: 12px;
    color: var(--accent);
    background: rgba(232, 179, 65, 0.1);
    border: 1px solid rgba(232, 179, 65, 0.35);
    border-radius: 999px;
    padding: 4px 14px;
    margin-bottom: 16px;
}

.cast-title {
    font-size: 26px;
    font-weight: 800;
    letter-spacing: 1px;
    color: var(--text);
}

.cast-sub {
    margin-top: 12px;
    font-size: 14px;
    color: var(--muted);
}

.cast-sub b { color: var(--accent); }

.cast-input {
    width: 100%;
    margin: 24px 0 16px;
    font-size: 28px;
    text-align: center;
    letter-spacing: 6px;
    text-transform: uppercase;
    background: var(--bg-deep);
    border: 1px solid var(--border-2);
    border-radius: 10px;
    padding: 14px;
    color: var(--text);
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.cast-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(232, 179, 65, 0.15);
}

.cast-input::placeholder { color: var(--dim); letter-spacing: 2px; }
.cast-input:-ms-input-placeholder { color: var(--dim); letter-spacing: 2px; }

.cast-btn { width: 100%; }

.cast-message {
    min-height: 24px;
    margin-top: 16px;
    font-size: 14px;
    line-height: 1.5;
}

.cast-message.success { color: #4caf50; }
.cast-message.error { color: #f44336; }

.cast-help {
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
    text-align: left;
}

.cast-help-title {
    font-size: 13px;
    font-weight: bold;
    color: var(--muted);
    margin-bottom: 10px;
}

.cast-help ol {
    padding-left: 18px;
    font-size: 13px;
    color: var(--muted);
    line-height: 1.9;
}

.cast-footer {
    text-align: center;
    padding: 24px;
    font-size: 13px;
    color: var(--dim);
    border-top: 1px solid var(--border);
    background: #0f1923;
}

@media (max-width: 480px) {
    .cast-card { padding: 28px 20px; }
    .cast-title { font-size: 22px; }
    .cast-input { font-size: 22px; letter-spacing: 4px; }
}