* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Arial', sans-serif;
}

:root {
    --color-primary: #0C7F85;
    --color-secondary: #0A3E41;
    --color-disable: #7DA6A8;
    --color-text: #0c2425;
    --color-white: #fff;
}

body {
    background-color: #f7f7f7;
    padding: 20px;
}

.container {
    max-width: 600px;
    margin: 40px auto;
    background: #fff;
    box-shadow: 0 0 20px rgba(0, 0, 0, .1);
    padding: 30px;
}

.titre-sous-titre {
    text-align: center;
    margin-bottom: 30px;
}

.titre-sous-titre h1 {
    color: var(--color-text);
    font-size: 28px;
}

.titre-sous-titre p {
    margin-top: 6px;
    color: var(--color-secondary);
    font-weight: 600;
}

.form-group {
    margin-bottom: 25px;
}

label {
    display: block;
    margin-bottom: 8px;
    color: var(--color-text);
    font-weight: 600;
    font-size: 16px;
}

input {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--color-disable);
    font-size: 16px;
    transition: border-color .3s;
}

input:focus {
    outline: none;
    border-color: var(--color-primary);
}

button {
    background: var(--color-primary);
    color: #fff;
    border: none;
    padding: 12px 20px;
    cursor: pointer;
    width: 100%;
    font-size: 16px;
    font-weight: 600;
    transition: background-color .3s;
}

button:hover {
    background: var(--color-secondary);
}

.success-message,
.error-message {
    display: none;
    padding: 15px;
    border-radius: 5px;
    margin-top: 20px;
    text-align: center;
}

.success-message {
    background: #dff0d8;
    color: #3c763d;
}

.error-message {
    background: #f2dede;
    color: #a94442;
}

.required {
    color: #e74c3c;
}

.logo {
    width: auto;
    text-align: center;
    margin-bottom: 20px;
}

.logo img {
    max-width: 300px;
    max-height: 300px;
    width: 100%;
    height: auto;
}

.loader {
    display: none;
    text-align: center;
    margin: 20px 0;
}

.spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--color-primary);
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

@keyframes spin {
    0% {
        transform: rotate(0deg)
    }

    100% {
        transform: rotate(360deg)
    }
}

.closed-message {
    text-align: center;
    margin: 30px 0 10px;
    font-size: 18px;
    font-weight: bold;
    color: var(--color-secondary);
}

.hint {
    text-align: center;
    color: #666;
    font-size: 14px;
    margin-top: 8px;
}