/* =========================
   GIỚI THIỆU PAGE
========================= */

.gioi-thieu .intro-page{
    padding:60px 20px;
    max-width:1000px;
    margin:auto;
    line-height:1.8;
}

/* =========================
   TITLE
========================= */
.gioi-thieu h1{
    text-align:center;
    font-size:30px;
    margin-bottom:15px;
    color:#1b5e20;
    font-weight:700;
}

/* highlight */
.gioi-thieu .highlight{
    text-align:center;
    color:#ff9800;
    font-weight:700;
    margin-bottom:25px;
    font-size:16px;
}

/* =========================
   TEXT
========================= */
.gioi-thieu p{
    margin-bottom:15px;
    font-size:15px;
    color:#333;
}

/* =========================
   HR
========================= */
.gioi-thieu hr{
    margin:35px 0;
    border:none;
    border-top:1px solid #ddd;
}

/* =========================
   H2
========================= */
.gioi-thieu h2{
    display: inline-block;
    margin: 30px auto 20px;
    padding: 12px 22px;

    font-size: 20px;
    font-weight: 700;
    text-align: center;

    color: #fff;

    background: linear-gradient(145deg, #1b5e20, #0d6efd);

    border-radius: 12px;

    box-shadow:
        0 6px 0 #0a3d12,          /* bóng cứng phía dưới (3D) */
        0 10px 20px rgba(0,0,0,0.25); /* bóng mềm */

    transform: perspective(500px) translateZ(0);
}
.gioi-thieu h2{
    display: table;
    margin-left: auto;
    margin-right: auto;
}
.gioi-thieu h2:hover{
    transform: translateY(-2px);
    box-shadow:
        0 8px 0 #0a3d12,
        0 14px 25px rgba(0,0,0,0.3);
}
.gioi-thieu h2:active{
    transform: translateY(3px);

    box-shadow:
        0 2px 0 #0a3d12,
        0 5px 10px rgba(0,0,0,0.2);
}
.gioi-thieu h2{
    border: 1px solid rgba(255,255,255,0.2);
}
/* =========================
   LIST
========================= */
.gioi-thieu ul{
    margin:15px 0;
    padding-left:20px;
}

.gioi-thieu ul li{
    margin-bottom:8px;
    font-size:15px;
}

/* =========================
   GRID 3 ẢNH
========================= */
.gioi-thieu .grid-3{
    display:grid;
    grid-template-columns: repeat(3, 1fr);
    gap:20px;
    margin:25px 0;
}

.gioi-thieu .item{
    flex:1;
    border-radius:12px;
    overflow:hidden;
    background:#fff;

    box-shadow:0 10px 25px rgba(0,0,0,0.15);
    transition:0.3s;
}

.gioi-thieu .item:hover{
    transform:translateY(-6px);
}

.gioi-thieu img{
    width:100%;
    height:220px;
    object-fit:cover;
}

/* label */
.gioi-thieu .label{
    position:absolute;
    bottom:0;
    left:0;
    right:0;

    padding:10px;
    font-weight:600;
    font-size:14px;

    color:#fff;
    text-align:center;

    background:linear-gradient(to top, rgba(0,0,0,0.7), transparent);
}
.gioi-thieu .item{
    position:relative;
}

/* =========================
   CTA
========================= */
.gioi-thieu .cta{
    text-align:center;
    margin-top:40px;
    padding:25px;
    background:#f5f5f5;
    border-radius:12px;
}

.gioi-thieu .cta h2{
    margin-bottom:10px;
}

.gioi-thieu .cta p{
    margin-bottom:15px;
}

/* =========================
   BUTTON
========================= */
.gioi-thieu .cta a{
    display:inline-block;
    padding:12px 22px;
    margin:8px;
    border-radius:30px;
    text-decoration:none;
    color:#fff;
    font-weight:600;
    font-size:15px;

    box-shadow:
        0 5px 0 rgba(0,0,0,0.2),
        0 10px 20px rgba(0,0,0,0.2);

    transition:0.2s;
}

/* call */
.gioi-thieu .btn-call{
    background:linear-gradient(145deg,#ff4d4d,#c62828);
}

/* zalo */
.gioi-thieu .btn-zalo{
    background:linear-gradient(145deg,#00aaff,#0066cc);
}

/* hover */
.gioi-thieu .cta a:hover{
    transform:translateY(-2px);
}

/* click */
.gioi-thieu .cta a:active{
    transform:translateY(3px);
    box-shadow:
        0 2px 0 rgba(0,0,0,0.2);
}

/* =========================
   MOBILE
========================= */
@media(max-width:768px){

    .gioi-thieu .intro-page{
        padding:40px 15px;
    }

    .gioi-thieu h1{
        font-size:22px;
    }

    .gioi-thieu h2{
        font-size:18px;
    }

    .gioi-thieu p{
        font-size:14px;
    }

    .gioi-thieu ul li{
        font-size:14px;
    }

    /* grid xuống 1 cột */
    
    .gioi-thieu .grid-3{
    grid-template-columns: repeat(2, 1fr);
    }

    .gioi-thieu img{
        height:180px;
    }


    .gioi-thieu .cta{
        padding:20px;
    }

    .gioi-thieu .cta a{
        width:auto;
        font-size:14px;
    }
}
/* =========================
   CONTACT FLOAT – ALWAYS SHOW
========================= */
.contact-fixed{
    position: fixed;
    right: 20px;
    bottom: 100px;
    z-index: 9999;

    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* nút tròn */
.contact-btn{
    width: 55px;
    height: 55px;
    border-radius: 50%;

    display:flex;
    align-items:center;
    justify-content:center;

    font-size:22px;
    color:#fff;
    text-decoration:none;

    box-shadow:
        0 6px 0 rgba(0,0,0,0.2),
        0 10px 20px rgba(0,0,0,0.25);

    transition:0.2s;
}

/* màu riêng */
.contact-btn.call{ background:linear-gradient(145deg,#ff4d4d,#c62828); }
.contact-btn.zalo{ background:linear-gradient(145deg,#00aaff,#0066cc); }
.contact-btn.home{ background:linear-gradient(145deg,#4caf50,#2e7d32); }

/* hover / click */
.contact-btn:hover{ transform: translateY(-3px); }
.contact-btn:active{
    transform: translateY(2px);
    box-shadow: 0 3px 0 rgba(0,0,0,0.2);
}
/* =========================
   BOX NỀN XANH 2 CỘT
========================= */
.feature-box{
    background:#1b5e20;
    padding:18px 20px;
    border-radius:8px;

    margin:25px 0;

    display:grid;
    grid-template-columns: repeat(2, 1fr);
    gap:10px 20px;
}

/* từng dòng */
.feature-line{
    color:#fff;
    font-size:15px;

    position:relative;
    padding-left:22px;
}

/* icon check */
.feature-line::before{
    content:"✔";
    position:absolute;
    left:0;
    top:0;

    color:#4caf50;
    font-weight:bold;
}
/* tiêu đề trong box */
.feature-title{
    grid-column: 1 / -1; /* chiếm full ngang */

    color:#fff;
    font-size:16px;
    font-weight:600;

    margin-bottom:10px;
    line-height:1.5;

    text-align:center; /* 👈 CĂN GIỮA */
}
@media(max-width:768px){
    .feature-box{
        grid-template-columns:1fr;
    }
}
/* =========================
   GRID 4 Ô CHUẨN (SẠCH)
========================= */
.service-grid{
    display:grid;
    grid-template-columns: repeat(2, 1fr);
    gap:20px;
    margin:30px 0;
}

/* ô nền xanh */
.service-item{
    background:#1b5e20;
    padding:20px;
    border-radius:12px;
    color:#fff;

    display:flex;
    flex-direction:column;
}

/* =========================
   TIÊU ĐỀ 3D (GIỮ NGUYÊN)
========================= */
.service-item h3{
    display: table;
    margin: 0 auto 12px;
    padding: 8px 16px;

    font-size:16px;
    font-weight:700;

    color:#fff;

    background: linear-gradient(145deg,#1b5e20,#0d6efd);

    border-radius:8px;

    box-shadow:
        0 4px 0 #0a3d12,
        0 8px 15px rgba(0,0,0,0.25);
}

/* =========================
   MÔ TẢ
========================= */
.service-item p{
    text-align:center;
    font-size:15px;
    line-height:1.5;
    margin-bottom:10px;
    color:#fff;
}

/* =========================
   LIST (SẠCH - KHÔNG ICON)
========================= */
.service-item ul{
    list-style:none;
    padding:0;
    margin:0;
}

/* nội dung */
.service-item li{
    font-size:16px;
    line-height:1.6;
    margin-bottom:10px;

    text-align:center;
    color:#fff;
}

/* =========================
   MOBILE
========================= */
@media(max-width:768px){
    .service-grid{
        grid-template-columns:1fr;
    }

    .service-item li{
        font-size:15px;
    }
}
/* =========================
   FONT TỰ CO GIÃN THÔNG MINH
========================= */

/* tiêu đề chính */
.gioi-thieu h1{
    font-size: clamp(22px, 4vw, 30px);
}

/* tiêu đề section */
.gioi-thieu h2{
    font-size: clamp(18px, 3.5vw, 22px);
}

/* tiêu đề trong ô */
.service-item h3{
    font-size: clamp(16px, 3.5vw, 18px);
}

/* nội dung */
.service-item li{
    font-size: clamp(15px, 3.5vw, 17px);
}

/* đoạn mô tả */
.service-item p{
    font-size: clamp(14px, 3.5vw, 16px);
}
@media(max-width:768px){
    .service-item{
        padding:18px;
    }

    .service-item li{
        line-height:1.6;
    }
}