/* Variables CSS */
:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --border-color: #d1d5db;
    --bg-light: #f9fafb;
    --white: #ffffff;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

/* Reset et base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 600px;
}

.form-wrapper {
    background: var(--white);
    border-radius: 12px;
    padding: 40px;
    box-shadow: var(--shadow-lg);
}

h1 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
    text-align: center;
}

.subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 30px;
    font-size: 15px;
}

/* Messages d'alerte */
#message-container {
    margin-bottom: 20px;
}

.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
    line-height: 1.5;
}

.alert-success {
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid #6ee7b7;
}

.alert-error {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

.alert-warning {
    background-color: #fef3c7;
    color: #92400e;
    border: 1px solid #fcd34d;
}

/* Groupes de formulaire */
.form-group {
    margin-bottom: 24px;
}

label {
    display: block;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-size: 14px;
}

.required {
    color: var(--error-color);
}

/* Champs de saisie */
input[type="text"],
input[type="email"],
input[type="tel"],
select,
textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 15px;
    font-family: inherit;
    transition: all 0.2s ease;
    background-color: var(--white);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

input[type="text"]:hover,
input[type="email"]:hover,
input[type="tel"]:hover,
select:hover,
textarea:hover {
    border-color: #9ca3af;
}

select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%236b7280'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 20px;
    padding-right: 40px;
}

textarea {
    resize: vertical;
    min-height: 120px;
}

.char-count {
    display: block;
    text-align: right;
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* Turnstile */
.turnstile-wrapper {
    display: flex;
    justify-content: center;
    margin: 30px 0;
}

/* Erreurs de validation des champs */
.field-error {
    color: var(--error-color);
    font-size: 12px;
    margin-top: 4px;
    display: block;
}

input.invalid,
textarea.invalid,
select.invalid {
    border-color: var(--error-color);
    background-color: #fef2f2;
}

input.invalid:focus,
textarea.invalid:focus,
select.invalid:focus {
    border-color: var(--error-color);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* Bouton de soumission */
.btn-submit {
    width: 100%;
    padding: 14px 24px;
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-sm);
    position: relative;
}

.btn-submit:hover:not(:disabled) {
    background-color: var(--primary-hover);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-submit:active:not(:disabled) {
    transform: translateY(0);
}

.btn-submit:disabled {
    background-color: #9ca3af;
    cursor: not-allowed;
    opacity: 0.6;
}

.btn-submit[aria-busy="true"] #submit-text::after {
    content: "";
    display: inline-block;
    width: 14px;
    height: 14px;
    margin-left: 8px;
    border: 2px solid var(--white);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    vertical-align: middle;
}

/* Notice de confidentialité */
.privacy-notice {
    margin-top: 24px;
    padding: 16px;
    background-color: var(--bg-light);
    border-radius: 8px;
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.5;
    text-align: center;
}

/* Responsive */
@media (max-width: 640px) {
    .form-wrapper {
        padding: 24px;
    }

    h1 {
        font-size: 24px;
    }

    .subtitle {
        font-size: 14px;
    }

    input[type="text"],
    input[type="email"],
    input[type="tel"],
    select,
    textarea {
        font-size: 16px; /* Évite le zoom sur iOS */
    }
}

/* Animation de chargement */
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.btn-submit:disabled::after {
    content: "";
    display: inline-block;
    width: 16px;
    height: 16px;
    margin-left: 8px;
    border: 2px solid var(--white);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    vertical-align: middle;
}