:root {
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --bg-color: #f3f4f6;
    --card-bg: #ffffff;
    --text-main: #111827;
    --text-muted: #6b7280;
    --border-color: #d1d5db;
    --focus-ring: rgba(79, 70, 229, 0.2);
    --error: #ef4444;
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 2rem 1rem;
}

.form-container {
    background: var(--card-bg);
    width: 100%;
    max-width: 650px;
    padding: 2.5rem;
    border-radius: 1rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
}

header {
    text-align: center;
    margin-bottom: 2rem;
}

header h1 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-main);
}

header p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

fieldset {
    border: none;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #f3f4f6;
}

fieldset:last-of-type {
    border-bottom: none;
    margin-bottom: 1rem;
}

legend {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 1rem;
    width: 100%;
}

.form-group {
    margin-bottom: 1.25rem;
    display: flex;
    flex-direction: column;
}

.row {
    display: flex;
    gap: 1rem;
}

.col {
    flex: 1;
    display: flex;
    flex-direction: column;
}

label {
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 0.4rem;
    color: #374151;
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="date"],
input[type="password"],
input[list],
textarea,
select {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: inherit;
    font-size: 0.95rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    background-color: #f9fafb;
    transition: all 0.2s ease;
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--primary);
    background-color: #fff;
    box-shadow: 0 0 0 4px var(--focus-ring);
}

.helper-text {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.35rem;
}

.radio-group,
.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-top: 0.25rem;
}

.radio-group label,
.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 400;
    cursor: pointer;
}

input[type="radio"], input[type="checkbox"] {
    width: 1.1rem;
    height: 1.1rem;
    accent-color: var(--primary);
    cursor: pointer;
}

.file-upload-wrapper input[type="file"] {
    padding: 0.5rem;
    border: 1px dashed var(--border-color);
    background: #f9fafb;
    border-radius: 0.5rem;
    cursor: pointer;
    width: 100%;
}

.checkbox-cgu {
    background-color: #f3f4f6;
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1.5rem;
}

.checkbox-cgu label {
    margin: 0;
    font-weight: 500;
}

.submit-btn {
    width: 100%;
    padding: 0.85rem;
    background-color: var(--primary);
    color: white;
    font-weight: 600;
    font-size: 1.05rem;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: background-color 0.2s;
}

.submit-btn:hover {
    background-color: var(--primary-hover);
}

@media (max-width: 600px) {
    .row {
        flex-direction: column;
        gap: 0;
    }
    
    .form-container {
        padding: 1.5rem;
    }
}