/* Global */
body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: #333333;
}

/* Header logo */
.header-logo {
    max-height: 90px;
}

/* Header buttons */
.header-buttons {
    background-color: #f8f9fa;
}

.btn-menu {
    padding: 14px 40px;
    font-size: 1.05rem;
    font-weight: 600;
    text-decoration: none;
    border: 3px solid #b70000;
    position: relative;
    display: inline-block;
    letter-spacing: 0.5px;
    transition: 0.25s ease;
}

.btn-red {
    background-color: #b70000;
    border-color: #b70000;
    color: #ffffff;
}

.btn-yellow {
    background-color: #f6c745;
    border-color: #f6c745;
    color: #000000;
}

/* Decorative frame corners (kiểu Haisư) cho .btn-menu */
.btn-menu::before,
.btn-menu::after {
    content: "";
    position: absolute;
    width: 18px;
    height: 18px;
    border: 3px solid currentColor;
}

.btn-menu::before {
    top: -8px;
    left: -8px;
    border-right: none;
    border-bottom: none;
}

.btn-menu::after {
    bottom: -8px;
    right: -8px;
    border-left: none;
    border-top: none;
}

.btn-menu:hover {
    transform: translateY(-3px);
    filter: brightness(0.95);
}

/* Story section */
.story-section {
    background-color: #ffffff;
}

.story-title {
    font-size: 2rem;
    color: #b70000;
    letter-spacing: 1px;
}

.story-content p {
    font-size: 1.05rem;
    line-height: 1.8;
    text-align: justify;
    margin-bottom: 1rem;
}

/* Footer */
.site-footer {
    background-color: #b70000;
    color: #ffffff;
}

/* Mobile tweaks */
@media (max-width: 767.98px) {
    .btn-menu {
        width: 100%;
    }

    .story-title {
        font-size: 1.6rem;
    }

    .story-section {
        padding-top: 2.5rem;
        padding-bottom: 2.5rem;
    }
}

/* =========================================================
   Bổ sung: button kiểu khung Haisư dùng class .custom-buttons + .btn-custom
   HTML mẫu:
   <div class="custom-buttons">
       <a href="https://haisu.vn/san-pham.htm" class="btn-custom btn-custom-red">XEM THỰC ĐƠN</a>
       <a href="https://haisu.vn/san-pham.htm" class="btn-custom btn-custom-yellow">ĐẶT BÀN TRỰC TUYẾN</a>
   </div>
   ========================================================= */

.custom-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin: 20px 0;
}

.btn-custom {
    padding: 14px 40px;
    font-size: 1.05rem;
    font-weight: 600;
    text-decoration: none;
    position: relative;
    display: inline-block;
    letter-spacing: 0.5px;
    border: 3px solid transparent;
    text-align: center;
    transition: 0.25s ease;
}

/* Khung 4 góc */
.btn-custom::before,
.btn-custom::after {
    content: "";
    position: absolute;
    width: 18px;
    height: 18px;
    border: 3px solid currentColor;
}

.btn-custom::before {
    top: -8px;
    left: -8px;
    border-right: none;
    border-bottom: none;
}

.btn-custom::after {
    bottom: -8px;
    right: -8px;
    border-left: none;
    border-top: none;
}

/* màu đỏ */
.btn-custom-red {
    background-color: #b70000;
    border-color: #b70000;
    color: #ffffff;
}

/* màu vàng */
.btn-custom-yellow {
    background-color: #f6c745;
    border-color: #f6c745;
    color: #000000;
}

/* hover */
.btn-custom:hover {
    transform: translateY(-3px);
    filter: brightness(0.95);
}

/* Mobile cho bộ .custom-buttons */
@media (max-width: 767.98px) {
    .custom-buttons {
        flex-direction: column;
        gap: 15px;
    }

    .btn-custom {
        width: 100%;
    }
}