/* --- 高級溫暖風格通用樣式 --- */
:root {
    --primary-brown: #a89080;
    --hover-brown: #8e735b;
    --bg-warm: #f9f7f5;
    --text-dark: #5a5552;
    --gb-font-size: 14px;
}

/* 字體大小 */
.font-size-small { --gb-font-size: 12px; }
.font-size-medium { --gb-font-size: 16px; }
.font-size-large { --gb-font-size: 20px; }

/* 留言牆按鈕 */
.floating-gb-btn {
    position: fixed;
    bottom: 25px;
    left: 25px;

    width: 65px;          /* ← 放大 */
    height: 65px;

    border-radius: 50%;
    background: var(--primary-brown);
    color: white;
    border: none;

    font-size: 26px;      /* ← icon 放大 */
    display: flex;
    align-items: center;
    justify-content: center;

    cursor: pointer;
    box-shadow: 0 6px 18px rgba(0,0,0,0.2);

    z-index: 9999;
    transition: 0.3s;
}

.floating-gb-btn:hover {
    background: var(--hover-brown);
    transform: translateY(-3px);
}

/* 手機 */
@media (max-width: 480px) {
    .floating-gb-btn {
        width: 55px;
        height: 55px;
        font-size: 22px;
        bottom: 20px;
        left: 20px;
    }
}

/* 按鈕 */
.gb-btn-primary,
.random-btn,
.sort-btn,
.font-toggle-btn,
.close-modal {
    height: 42px;
    padding: 0 25px;
    border-radius: 21px;
    border: none;
    cursor: pointer;
    font-weight: bold;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    white-space: nowrap;
    transition: 0.3s;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

/* 主按鈕 */
.random-btn,
.sort-btn {
    background: var(--primary-brown);
    color: white;
}

/* 字體切換 */
.font-toggle-btn {
    background: #c39797;
    color: white;
    height: 42px !important; 
    padding: 0 25px !important;
}

.font-toggle-btn:hover {
    background: #c39797 !important; /* 固定不變 */
    filter: brightness(0.95);
}

/* 前往觀看全部留言按鈕 */
.view-all-link {
    display: block;
    text-align: center;
    margin-top: 40px;

    color: var(--primary-brown);
    text-decoration: none;
    font-weight: bold;

    padding: 12px;
    border: 2px solid var(--primary-brown);
    border-radius: 12px;

    transition: 0.3s;
}

.view-all-link:hover {
    background: var(--primary-brown);
    color: white;
}

/* 收回 */
.close-modal {
    background: #e0ddd9;
    color: var(--text-dark);
}

/* hover */
.random-btn:hover,
.sort-btn:hover,
.font-toggle-btn:hover,
.close-modal:hover {
    transform: translateY(-2px);
    background: var(--hover-brown);
    color: white;
}

/* 搜尋框 */
.search-input {
    padding: 10px 20px;
    border: 2px solid #e0ddd9;
    border-radius: 25px;
    width: 250px;
}
.search-input:focus { border-color: var(--primary-brown); }

/* Modal Header */
.gb-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.gb-modal {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.6);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 99999;
}

.gb-modal.active {
    display: flex !important;
}

.gb-modal-content {
    background: var(--bg-warm);
    width: 90%;
    max-width: 650px;
    max-height: 85vh;
    border-radius: 20px;
    padding: 25px;
    overflow-y: auto;
}

/* 修正間距問題 */
.modal-action-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 20px 0 25px 0; /* ← 這裡是關鍵 */
    gap: 10px;
}

.gb-grid-layout {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 25px;
    width: 100%;
    padding: 20px 0;
    max-width: 1400px;
    margin: 0 auto;
}

/* 手機微調 */
@media (max-width: 600px) {
    .gb-grid-layout { gap: 12px; }
    .gb-message-card { padding: 15px !important; }
}

/* 留言卡片 */
.gb-message-card { 
    padding: 25px !important;
    background: #ffffff !important; 
    border-radius: 12px !important; 
    border-left: 6px solid var(--gb-theme-color) !important; 
    box-shadow: 2px 2px 8px rgba(0,0,0,0.06) !important; 
    position: relative;
}

/* 主題色 */
.gb-theme-0 { --gb-theme-color: #f8b1b1; }
.gb-theme-1 { --gb-theme-color: #fbc79a; }
.gb-theme-2 { --gb-theme-color: #a7d7c5; }
.gb-theme-3 { --gb-theme-color: #b1c1f8; }
.gb-theme-4 { --gb-theme-color: #d1b1f8; }
.gb-theme-5 { --gb-theme-color: #e8ca8a; }

.gb-nickname { 
    font-weight: bold !important; 
    color: var(--gb-theme-color) !important; 
    margin-bottom: 12px !important; 
}

.gb-content {
    color: #444; 
    font-size: var(--gb-font-size);
    line-height: 1.6;
    word-break: break-all;
}

/* 展開按鈕 */
.gb-toggle-btn {
    background: none;
    border: none;
    color: var(--gb-theme-color);
    cursor: pointer;
    font-size: 14px;
    font-weight: bold;
    margin-top: 10px;
    margin-left: auto;
    display: block;
}

/* 動畫 */
#random-container { perspective: 1200px; }

.peel-off-slow { animation: slowRealPeel 0.8s forwards; }
@keyframes slowRealPeel {
    to { transform: rotateX(90deg) translateY(-80px); opacity: 0; }
}

.stick-on-unroll { animation: paperUnroll 1.1s forwards; }
@keyframes paperUnroll {
    from { transform: rotateX(-70deg); opacity: 0; }
    to { transform: rotateX(0deg); opacity: 1; }
}

/* 分頁 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin: 40px 0;
}

.page-btn {
    width: 45px;
    height: 45px;
    border-radius: 8px;
    border: 1px solid #e0ddd9;
    background: white;
    color: #a89080;
    cursor: pointer;
}

.page-btn.active {
    background: #a89080;
    color: white;
}

/* =========================
   ⬆⬇ 滾動按鈕
========================= */
.scroll-controls {
    position: fixed;
    top: 50%;
    right: 30px;
    display: flex;
    transform: translateY(-50%);
    flex-direction: column;
    gap: 12px;
    z-index: 9998;
}

.scroll-btn {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: var(--primary-brown);
    color: white;
    border: none;
    cursor: pointer;
    font-size: 18px;
}

.scroll-btn:hover {
    background: var(--hover-brown);
}

/* 手機 */
@media (max-width: 480px) {
    .scroll-controls {
        top: 50%;
        right: 15px;
        transform: translateY(-50%);
    }
    .scroll-btn {
        width: 40px;
        height: 40px;
    }
}