/* Mobile First Approach */
.upload-container {
    max-width: 100%;
    padding: 15px;
}

@media (min-width: 768px) {
    .upload-container {
        max-width: 750px;
        margin: 0 auto;
    }
}

.file-preview {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 10px;
}
body { font-family: Arial, sans-serif; margin: 30px; }
.file-preview { display: flex; flex-wrap: wrap; gap: 15px; }
.file-item { border: 1px solid #ccc; padding: 10px; border-radius: 5px; width: 130px; text-align: center; }
input[type="file"] { margin-bottom: 10px; }
.file-item input[type="checkbox"] { margin-bottom: 5px; }
.file-item form { margin-top: 5px; }
@media (max-width: 600px) {
    .file-item { width: 100%; }
}
.edit-actions { margin-top: 8px; background: #f9f9f9; border-radius: 5px; padding: 5px; }
.edit-btn { margin-top: 5px; }
#lightbox { /* siehe oben */ }
body {
    background: linear-gradient(135deg, #2193b0, #6dd5ed);
    min-height: 100vh;
    margin: 0;
    font-family: 'Segoe UI', Arial, sans-serif;
}
.center-box {
    background: #fff;
    max-width: 400px;
    margin: 60px auto 0 auto;
    border-radius: 16px;
    box-shadow: 0 6px 32px rgba(0,0,0,0.12);
    padding: 32px 24px 24px 24px;
    text-align: center;
}
h1 {
    margin-bottom: 24px;
    color: #2193b0;
    font-weight: 600;
}
form {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-top: 12px;
}
input[type="email"], input[type="password"], input[type="text"] {
    padding: 10px 12px;
    border: 1px solid #b2bec3;
    border-radius: 6px;
    font-size: 1em;
    background: #f7fafd;
    transition: border 0.2s;
}
input[type="email"]:focus, input[type="password"]:focus, input[type="text"]:focus {
    border-color: #2193b0;
    outline: none;
}
button {
    background: linear-gradient(90deg, #2193b0, #6dd5ed);
    color: #fff;
    border: none;
    border-radius: 6px;
    padding: 11px 0;
    font-size: 1.1em;
    font-weight: 600;
    cursor: pointer;
    margin-top: 4px;
    transition: background 0.2s;
}
button:hover {
    background: linear-gradient(90deg, #6dd5ed, #2193b0);
}
.tab-container {
    display: flex;
    margin-bottom: 10px;
    border-radius: 8px;
    overflow: hidden;
}
.tab-btn {
    flex: 1;
    background: #f7fafd;
    border: none;
    padding: 12px 0;
    font-size: 1em;
    cursor: pointer;
    color: #2193b0;
    transition: background 0.2s, color 0.2s;
}
.tab-btn.active {
    background: linear-gradient(90deg, #2193b0, #6dd5ed);
    color: #fff;
    font-weight: bold;
}
.tab-content {
    display: none;
}
.remember-label {
    font-size: 0.97em;
    color: #636e72;
    text-align: left;
    margin-top: -7px;
}
#pass-strength {
    font-size: 0.93em;
    min-height: 20px;
    text-align: left;
}
@media (max-width: 500px) {
    .center-box { padding: 18px 6px 14px 6px; }
    h1 { font-size: 1.3em; }
}