/* ===========================
   共通
=========================== */

*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

body{
    background:#111827;
    color:#ffffff;
    font-family:Arial, Helvetica, sans-serif;
}

/* ===========================
   ヘッダー
=========================== */

header{
    background:#0f172a;
    padding:30px;
    text-align:center;
    border-bottom:2px solid #334155;
}

header h1{
    font-size:36px;
    margin-bottom:10px;
}

header p{
    color:#cbd5e1;
    margin-bottom:20px;
}

nav{
    display:flex;
    justify-content:center;
    gap:15px;
    flex-wrap:wrap;
}

nav a{
    color:white;
    text-decoration:none;
    background:#2563eb;
    padding:10px 20px;
    border-radius:8px;
    transition:.3s;
}

nav a:hover{
    background:#1d4ed8;
}

/* ===========================
   メイン
=========================== */

main{
    width:95%;
    max-width:1200px;
    margin:30px auto;
}

/* ===========================
   入力フォーム
=========================== */

.form-area{
    background:#1e293b;
    padding:25px;
    border-radius:12px;
    margin-bottom:30px;
}

.form-box{
    display:flex;
    flex-direction:column;
    gap:12px;
}

.form-box label{
    font-weight:bold;
}

.form-box input,
.form-box select,
.form-box textarea{
    width:100%;
    padding:10px;
    border:none;
    border-radius:8px;
    font-size:15px;
}

.form-box textarea{
    resize:vertical;
}

button{
    margin-top:10px;
    padding:14px;
    font-size:16px;
    border:none;
    border-radius:10px;
    background:#16a34a;
    color:white;
    cursor:pointer;
    transition:.3s;
}

button:hover{
    background:#15803d;
}

/* ===========================
   広告
=========================== */

.ad-area{
    background:#1e293b;
    padding:20px;
    border-radius:12px;
    text-align:center;
    margin-bottom:30px;
}

/* ===========================
   アルバム一覧
=========================== */

.album-list{

    display:grid;

    grid-template-columns:
        repeat(auto-fill,minmax(250px,1fr));

    gap:20px;

    margin:20px 0 40px;

}

.album-card{

    background:#1e293b;

    border-radius:12px;

    overflow:hidden;

    padding:15px;

    box-shadow:0 0 10px rgba(0,0,0,.4);

}

.album-card img{

    width:100%;

    height:250px;

    object-fit:cover;

    border-radius:8px;

    margin-bottom:15px;

}

.no-image{

    width:100%;

    height:250px;

    display:flex;

    justify-content:center;

    align-items:center;

    background:#374151;

    border-radius:8px;

    margin-bottom:15px;

}

.album-card h3{

    margin-bottom:10px;

}

.album-card p{

    margin:6px 0;

}

.rank{

    color:#facc15;

    font-weight:bold;

}

.comment-box{

    margin-top:12px;

    background:#0f172a;

    padding:10px;

    border-radius:8px;

    white-space:pre-wrap;

}

/* ===========================
   フッター
=========================== */

footer{

    text-align:center;

    padding:30px;

    background:#0f172a;

    margin-top:40px;

}