body {
    background: #000;
    color: #FFF;
    margin: 0;
    height: 100%;
    box-sizing: border-box;
    font-family: 'Segoe UI', 'Helvetica Neue', Arial, 'ヒラギノ角ゴ ProN', 'Hiragino Kaku Gothic ProN', 'メイリオ', Meiryo, sans-serif;
    background-image: 
        linear-gradient(to bottom, rgba(0,0,0,0) 60%, rgba(0,0,0,0.85) 100%),
        url('./images/bg.jpg');
    background-repeat: no-repeat;
    background-position: center top;
    background-size: cover;
}
body.bokeh {
    background-image: 
        linear-gradient(to bottom, rgba(0,0,0,0) 60%, rgba(0,0,0,0.85) 100%),
        url('./images/bg-bokeh.jpg');
}
.pt-serif-regular {
  font-family: "PT Serif", serif;
  font-weight: 400;
  font-style: normal;
}
header {
    position: relative;
}
header .logo{
    font-size:1.8rem;
    text-align: center;
    background-color: rgba(0,0,0,0.4);
    letter-spacing: 2px;
    padding:0.3rem 0;
    box-shadow: 0 1px 3px rgba(0,0,0,0.15);
}
.arrow-back {
    position: relative;
    padding-left: 1.5em;
    color: #888;
    text-decoration: none;
    font-weight: bold;
    font-family: sans-serif;
    font-size: 1.1em;
}
.arrow-back::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%) rotate(45deg);
    width: 0.8em;
    height: 0.8em;
    border-left: 2.5px solid #888;
    border-bottom: 2.5px solid #888;
}

.login-container {
    background: rgba(255,255,255,0.8);
    padding: 2.5rem 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.06);
    min-width: 320px;
    max-width: 100%;
    width: 100%;
    box-sizing: border-box;
    color: #333;
}
.login-title {
    font-size: 1.3rem;
    margin-bottom: 1.2rem;
    color: #222;
    text-align: center;
    font-weight: 600;
}
.form-group {
    margin-bottom: 1.2rem;
}
.wrapper {
    box-sizing: border-box;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    /*align-items: center;*/
    /*justify-content: center;*/
    box-sizing:border-box;
}
label {
    display: block;
    margin-bottom: 0.5rem;
    color: #363636;
    font-size: 0.98rem;
}
input[type="email"],input[type="text"] {
    width: 100%;
    padding: 0.7rem;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    font-size: 1rem;
    background: #fafbfc;
    transition: border 0.2s;
    box-sizing: border-box;
}
input[type="email"]:focus, input[type="text"]:focus{
    border-color: #a5a5a5;
    outline: none;
    background: #fff;
}
.submit-btn {
    width: 100%;
    padding: 0.8rem;
    background: #D6DF22;
    color: #000;
    background: #D6DF22;
    border-radius: 30px;
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
    border:0;
    box-shadow: 0 4px 16px rgba(0,0,0,0.25);
    box-sizing: border-box;
}
.submit-btn:hover {
    background: #f6ff53;
}
.submit-btn:disabled {
    background-color: #ccc !important;
    color: #888 !important;
    cursor: not-allowed !important;
}
.submit-btn.frame{
    background: #FFF;
    color: #4f8cff;
    border: 1px solid #4f8cff;
}
.info-text {
    margin-top: 1.2rem;
    color: #333;
    font-size: 0.95rem;
    text-align: center;
}
.link-text {
    color: #000;
    text-decoration: underline;
    transition: color 0.2s;
}
.link-text:hover {
    color: #333;
    text-decoration: none;
}
.text-red {
    color: #e53935;
}
.text-blue {
    color: #4f8cff;
}
.text-center {
    text-align: center;
}
.text-left {
    text-align: left;
}
.text-right {
    text-align: right;
}
.text-bold {
    font-weight: 600;
}
.mt0 {
    margin-top: 0;
}
.mb0 {
    margin-bottom: 0;
}
.mt1 {
    margin-top: 1.2rem;
}
.mb1 {
    margin-bottom: 1.2rem;
}
.mt2 {
    margin-top: 1.4rem;
}
.mb2 {
    margin-bottom: 1.4rem;
}
.mb3 {
    margin-bottom: 1.7rem;
}
.mb4 {
    margin-bottom: 2rem;
}


.fs-ss {
    font-size: 0.8rem;
}
.fs-s {
    font-size: 0.9rem;
}










@media (max-width: 480px) {
    body {
        box-sizing: border-box;
    }
    .login-container {
        padding: 1.5rem 1rem;
        min-width: unset;
        border-radius: 8px;
        box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    }
    .login-title {
        font-size: 1.1rem;
    }
    .info-text {
        font-size: 0.9rem;
    }
}
@media (max-width: 340px) {
    .login-container {
        padding: 1rem 0.3rem;
    }
}