:root {
    --primary-color: #2c3e50;
    --accent-color: #27ae60;
    --bg-color: #f0f2f5;
    --text-muted: #7f8c8d;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    margin: 0;
    padding: 40px 20px;
    display: flex;
    justify-content: center;
}

.registration-card {
    background: white;
    max-width: 650px;
    width: 100%;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.05);
}

header {
    text-align: center;
    margin-bottom: 30px;
}

header h2 {
    margin: 0;
    color: var(--primary-color);
}

header p {
    color: var(--text-muted);
    font-size: 14px;
}

fieldset {
    border: none;
    padding: 0;
    margin-bottom: 25px;
}

legend {
    font-weight: 700;
    color: var(--primary-color);
    border-bottom: 2px solid #eee;
    width: 100%;
    padding-bottom: 5px;
    margin-bottom: 15px;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.row {
    display: flex;
    gap: 20px;
    margin-bottom: 15px;
}

.input-group {
    flex: 1;
    display: flex;
    flex-direction: column;
}

label {
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 6px;
    color: #444;
}

input, select {
    padding: 12px;
    border: 1.5px solid #dce1e5;
    border-radius: 6px;
    transition: all 0.2s;
}

input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(39, 174, 96, 0.1);
}

.terms {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    margin-bottom: 20px;
}

.btn-submit {
    width: 100%;
    padding: 15px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.btn-submit:hover {
    background-color: #1a252f;
}

@media (max-width: 500px) {
    .row { flex-direction: column; gap: 15px; }
}


.file-upload-wrapper {
    border: 2px dashed #dce1e5;
    padding: 15px;
    border-radius: 6px;
    background-color: #fafbfc;
    text-align: center;
}

.file-hint {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 8px;
}

input[type="file"] {
    border: none;
    padding: 5px;
    background: transparent;
    cursor: pointer;
}