/* Couleurs principales */
:root {
    --vert: #0D8754;
    --rouge: #E4352B;
    --gris: #424141;
    --fond-input: #f8fafc;
    --fond-form: #fff;
    --ombre: 0 8px 32px rgba(66,65,65,0.13);
}

/* Formulaire principal */
.custom-form {
    max-width: 800px;
    margin: 48px auto;
    padding: 32px 24px;
    background: var(--fond-form);
    border-radius: 24px;
    box-shadow: var(--ombre);
    font-family: 'Segoe UI', Arial, sans-serif;
    border: 1px solid #ececec;
    position: relative;
}

.custom-form .form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px 24px;
}

.custom-form .form-group {
    margin-bottom: 0;
    color: var(--gris);
}

.custom-form label {
    display: block;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--vert);
}

.custom-form input[type="text"],
.custom-form input[type="email"],
.custom-form select {
    width: 100%;
    padding: 10px 12px;
    border: 1.5px solid #bdbdbd;
    border-radius: 8px;
    font-size: 1rem;
    background: var(--fond-input);
    color: var(--gris);
    transition: border 0.2s;
}

.custom-form input:focus,
.custom-form select:focus {
    border-color: var(--vert);
    outline: none;
    background: #e3fbe9;
}

.custom-form input[type="checkbox"] {
    accent-color: var(--vert);
    width: 18px;
    height: 18px;
    margin-right: 8px;
    vertical-align: middle;
}

.custom-form button[type="submit"] {
    background: var(--vert);
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 12px 32px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.2s;
    margin-top: 10px;
    box-shadow: 0 2px 8px rgba(66,65,65,0.10);
    width: 100%;
}

.custom-form button[type="submit"]:hover,
.custom-form button[type="submit"]:focus {
    background: #0b6c43;
}

.error-message {
    color: var(--rouge);
    font-size: 0.95em;
    margin-top: 2px;
    min-height: 18px;
}

#form-message.success {
    color: var(--vert);
    font-weight: bold;
    margin-top: 18px;
}

#form-message.error {
    color: var(--rouge);
    font-weight: bold;
    margin-top: 18px;
}

.custom-form-title {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    color: var(--vert);
    margin-bottom: 32px;
    letter-spacing: 0.5px;
}

/* Loader styles */
.form-loader {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(255,255,255,0.85);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 10;
    border-radius: 24px;
    font-size: 1.1rem;
    color: var(--vert);
}

.spinner {
    width: 48px;
    height: 48px;
    border: 5px solid #e3e3e3;
    border-top: 5px solid var(--vert);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 18px;
}
@keyframes spin {
    100% { transform: rotate(360deg); }
}

/* Pleine largeur pour le dernier champ si besoin */
.form-group-full {
    grid-column: 1 / -1 !important;
    width: 100%;
}

/* Responsive */
@media (max-width: 700px) {
    .custom-form .form-grid {
        grid-template-columns: 1fr;
        gap: 16px 0;
    }
    .custom-form {
        padding: 6vw 2vw 2vw 2vw;
        border-radius: 14px;
    }
    .custom-form button[type="submit"] {
        width: 100%;
        padding: 14px 0;
    }
}