body {
    background: linear-gradient(135deg, #e8ebf3 60%, #d4defb 100%);
    font-family: 'Segoe UI', Arial, sans-serif;
    margin: 0;
    padding: 0;
    min-height: 100vh;
}
.container {
    max-width: 430px;
    margin: 40px auto;
    padding: 32px 9px 30px 9px;
    background: #fff;
    border-radius: 19px;
    box-shadow: 0 6px 36px 0 #3663c816, 0 1.5px 0 #e0e6ee inset;
    text-align: center;
    word-break: break-word;
    border: 1.5px solid #dde8fa;
    width: 100%;
    box-sizing: border-box;
}

h2 {
    margin-bottom: 13px;
    color: #18407a;
    font-size: 1.12em;
    letter-spacing: 0.01em;
    word-break: break-all;
    background: #f5f8fe;
    border-radius: 8px;
    padding: 8px 12px;
    display: inline-block;
    max-width: 98%;
    box-sizing: border-box;
}
.desc {
    color: #5472a0;
    margin-bottom: 16px;
    font-size: 1.03em;
    line-height: 1.55em;
}
input[type="file"], input[type="text"], input[type="password"] {
    width: 100% !important;
    margin: 12px 0 16px 0;
    padding: 16px 14px;
    border-radius: 10px;
    border: 1.7px solid #b7c3e2;
    font-size: 1.06em;
    outline: none;
    background: #f7faff;
    color: #222d38;
    display: block;
    box-sizing: border-box;
    transition: border 0.16s, box-shadow 0.17s;
    box-shadow: 0 1.5px 6px #d2e4fa12 inset;
    min-width: 0;
    max-width: 100%;
}
input[type="file"] {
    padding: 11px 2px;
    background: #fff;
}
input[type="text"]:focus, input[type="password"]:focus {
    border: 1.9px solid #347cfb;
    background: #f2f8ff;
    box-shadow: 0 2px 10px #aad7ff22;
}
input[readonly] {
    color: #888ba0;
    background: #f8fafc;
    border-color: #e0e6f3;
}
.btn {
    padding: 15px 0;
    width: 100%;
    background: linear-gradient(90deg, #347cfb 60%, #1c4db6 100%);
    color: #fff;
    border: none;
    border-radius: 9px;
    font-size: 1.12em;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 2px 12px #347cfb18;
    transition: background 0.17s, box-shadow 0.18s, transform 0.10s;
    margin: 0 0 14px 0;
    display: block;
}
.btn:hover:enabled {
    background: linear-gradient(90deg, #2155b0 70%, #113178 100%);
    transform: translateY(-1px) scale(1.025);
    box-shadow: 0 4px 18px #347cfb23;
}
.btn:disabled {
    background: #c4d2e7;
    color: #f8f8f8;
    cursor: not-allowed;
    box-shadow: none;
}
.alert {
    margin: 16px auto 18px auto;
    padding: 17px 16px 15px 16px;
    border-radius: 12px;
    font-size: 1.06em;
    font-weight: 500;
    text-align: center;
    max-width: 99vw;
    box-shadow: 0 2px 16px #2363a012;
    border: 1.7px solid #b6d7f7;
    word-break: break-word;
    background: #f9fcff;
    position: relative;
    z-index: 2;
}
.alert-big {
    font-size: 1.06em !important;
    font-weight: 500;
    padding: 17px 16px 15px 16px;
}
.alert-info {
    background: linear-gradient(100deg, #eaf4ff 80%, #d8eafd 100%);
    color: #145691;
    border-color: #b6d7f7;
}
.alert-danger {
    background: linear-gradient(100deg, #fff6f6 80%, #ffe6e6 100%);
    color: #c12727;
    border-color: #f7c6c6;
}
#status {
    min-height: 24px;
    margin-top: 11px;
    font-size: 1.09em;
    word-break: break-word;
}
.progress-wrap {
    width: 100%;
    background: #f2f5fa;
    border-radius: 9px;
    height: 24px;
    margin: 17px 0 14px 0;
    overflow: hidden;
    box-shadow: 0 2px 10px #e0eafc33 inset;
    display: block;
}
#progressBar {
    height: 100%;
    background: linear-gradient(90deg, #49d3ff 60%, #1776ee 100%);
    width: 0%;
    color: #154d73;
    text-align: center;
    font-size: 1.06em;
    font-weight: 600;
    transition: width 0.3s;
    padding-top: 3px;
}
.copy-section {
    width: 100%;
    margin: 0 0 13px 0;
}
.copy-section input[type="text"] {
    margin: 0 0 0 0;
    font-size: 1.04em;
    padding: 15px 14px;
}
.copy-section .btn {
    width: 100%;
    margin: 7px 0 0 0;
    font-size: 1.04em;
    padding: 12px 0;
}
.copy-feedback {
    color: #188c2d;
    font-size: 1.04em;
    min-height: 18px;
    margin-bottom: 6px;
    margin-top: 3px;
}
@media (max-width: 600px) {
    .container {
        max-width: 90vw;
        padding: 4vw 1vw 6vw 1vw;
        border-radius: 13px;
    }
    h2 {
        font-size: 1.10em;
        padding: 11px 6px;
    }
    .alert {
        max-width: 98vw;
        font-size: 1.03em;
        padding: 8vw 3vw 7vw 3vw;
    }
    .alert-big {
        font-size: 1.03em !important;
        padding: 7vw 2vw 7vw 2vw;
    }
    input[type="text"], input[type="password"], input[type="file"] {
        font-size: 1.07em;
        padding: 15px 10px;
        border-radius: 13px;
    }
    .btn {
        font-size: 1.10em;
        padding: 15px 0;
        border-radius: 11px;
    }
    .copy-section .btn {
        font-size: 1.09em;
        padding: 13px 0;
        margin: 10px 0 0 0;
        border-radius: 11px;
    }
    .copy-feedback {
        font-size: 1.07em;
    }
    .progress-wrap {
        height: 25px;
        border-radius: 12px;
    }
}