/* =========================================
   Terms of Service Page Styles
   ========================================= */

/* 確保全站樣式一致 */
.terms-content {
    margin-left: var(--sidebar-width);
    height: 100vh;
    overflow-y: auto;
    padding: 0px 20px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: margin-left 0.3s ease, background-color 0.3s ease;
    display: block;
    justify-content: center;
}

/* 自定義捲軸 */
.terms-content::-webkit-scrollbar { width: 8px; }
.terms-content::-webkit-scrollbar-track { background: transparent; }
.terms-content::-webkit-scrollbar-thumb { background-color: var(--text-muted); border-radius: 4px; }

@media (max-width: 768px) {
    .terms-content {
        margin-left: 0;
        padding-top: 60px; /* 避開手機 Header */
    }

    .terms-container { 
        padding: 30px 20px;
        margin: 20px auto;
        border: none;      /* 手機版可以拿掉邊框，看起來更滿版 */
        box-shadow: none;
    }
}
   

body.collapsed-mode .terms-content {
    margin-left: var(--sidebar-collapsed-width);
}

.terms-container {
    max-width: 900px;
    width: 100%;
    background: var(--bg-card);
    padding: 60px;
    border-radius: 12px;
    box-shadow: 0 4px 20px var(--shadow-color);
    border: 1px solid var(--border);
    position: relative;
    margin: 10px auto; 
    margin-bottom: 100px; /* 確保底部也能捲動到 */
}

@media (max-width: 768px) {
    .terms-container { padding: 30px 20px;margin: 20px auto; width: 95%;}
}

/* --- Top Bar --- */
.terms-top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 15px;
}

.terms-logo img {
    width: 240px;
    height: auto;
    object-fit: contain;
}

.logo-light { display: block; }
.logo-dark  { display: none; }
[data-theme="dark"] .logo-light { display: none !important; }
[data-theme="dark"] .logo-dark  { display: block !important; }

.terms-controls {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Theme Toggle */
.theme-toggle-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    width: 36px;
    height: 36px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}
.theme-toggle-btn:hover { background: var(--bg-hover); color: var(--primary); }
.theme-toggle-btn .sun-icon { display: block; }
.theme-toggle-btn .moon-icon { display: none; }
[data-theme="dark"] .theme-toggle-btn .sun-icon { display: none; }
[data-theme="dark"] .theme-toggle-btn .moon-icon { display: block; }

/* Language Select */
.lang-select-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}
.lang-select-wrapper select {
    appearance: none;
    -webkit-appearance: none;
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 8px 32px 8px 12px;
    font-size: 14px;
    border-radius: 8px;
    cursor: pointer;
    font-family: inherit;
    font-weight: 500;
}
.lang-select-wrapper select:hover { border-color: var(--primary); }
.select-arrow {
    position: absolute;
    right: 10px;
    pointer-events: none;
    color: var(--text-muted);
    width: 14px;
    height: 14px;
}

.terms-divider {
    border: 0;
    border-top: 1px solid var(--border-sub);
    margin: 20px 0 40px 0;
    width: 100%;
}

/* --- Content Styles --- */
.terms-header { margin-bottom: 40px; }
.terms-header h1 {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--primary-light);
    margin-bottom: 15px;
    font-family: 'Space Grotesk', sans-serif;
    letter-spacing: -0.02em;
}

.terms-meta {
    font-size: 0.9rem;
    color: var(--text-muted);
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.terms-body {
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}
.terms-body.active {
    display: block;
    opacity: 1;
}

.terms-body section { margin-bottom: 40px; }

.terms-body h2 {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 18px;
    border-bottom: 1px solid var(--border-sub);
    padding-bottom: 8px;
}

.terms-body p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 16px;
    text-align: justify;
}

.terms-body ul {
    list-style-type: disc;
    padding-left: 20px;
    margin-bottom: 20px;
    color: var(--text-secondary);
}

.terms-body li {
    margin-bottom: 8px;
    line-height: 1.6;
}

.terms-body strong {
    color: var(--text-primary);
    font-weight: 600;
}

.terms-body a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
}
.terms-body a:hover { text-decoration: underline; }

/* Alert Box for Legal Disclaimers */
.terms-alert {
    background-color: rgba(255, 0, 0, 0.05);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-left: 4px solid #ef4444;
    padding: 15px 20px;
    border-radius: 8px;
    margin: 20px 0;
    font-size: 0.95rem;
    line-height: 1.6;
}

.terms-footer {
    margin-top: 60px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* =========================================
   Back to Chat Button
   ========================================= */
.back-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
    background-color: transparent;
    height: 36px; /* 與其他按鈕等高 */
}

.back-btn:hover {
    background-color: var(--bg-hover);
    color: var(--primary);
    border-color: var(--primary);
    transform: translateX(-2px); /* 微微向左移動效果 */
}

.back-btn svg {
    flex-shrink: 0;
}

/* Mobile 適配 */
@media (max-width: 600px) {
    .back-btn span {
        display: none; /* 手機版只顯示箭頭 Icon，節省空間 */
    }
    .back-btn {
        padding: 8px;
    }
}