main {
    min-height: calc(100dvh - 60px);
    width: 100%;
    padding: 10px;
    display: flex;
    align-items: start;
    justify-content: center;
    box-sizing: border-box;
}

.title h1 {
    font-size: 2rem;
    line-height: 90%;
}

.register {
    background-color: #fff;
    padding: 20px;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    border-radius: 20px;
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
    box-sizing: border-box;
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.register h2 {
    font-size: 1.8rem;
    color: var(--main-green);
    margin-bottom: 10px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.form_reg {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.register label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
    color: var(--text-primary);
    text-align: left;
}

.input-group {
    position: relative;
    width: 100%;
}

.register input {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 16px; /* Évite le zoom sur iOS */
    font-family: inherit;
    box-sizing: border-box;
    background: rgba(255, 255, 255, 0.95);
    transition: all 0.3s ease;
    color: var(--text-primary);
}

.register input:focus {
    outline: none;
    border-color: var(--main-green);
    box-shadow: 0 0 0 3px rgba(27, 105, 90, 0.1);
    transform: translateY(-1px);
}

.register input::placeholder {
    color: var(--text-secondary);
    opacity: 0.8;
}

.register input:valid {
    border-color: var(--light-green);
    background: rgba(54, 180, 155, 0.05);
}

.btn-register {
    background: linear-gradient(135deg, var(--button-green), var(--light-green));
    color: #fff;
    padding: 16px 24px;
    text-decoration: none;
    border: none;
    border-radius: 12px;
    font-weight: bold;
    font-size: 18px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 16px rgba(59, 150, 133, 0.3);
    margin-top: 10px;
    width: 100%;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-register:hover {
    background: linear-gradient(135deg, var(--main-green), var(--button-green));
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 150, 133, 0.4);
}

.btn-register:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(59, 150, 133, 0.3);
}

.server_msg {
    display: none;
    font-size: 14px;
    text-align: center;
    padding: 10px;
    border-radius: 8px;
    margin: 10px 0;
}

.server_msg.error {
    background: rgba(229, 62, 62, 0.1);
    color: var(--accent-red);
    border: 1px solid rgba(229, 62, 62, 0.2);
}

.server_msg.success {
    background: rgba(54, 180, 155, 0.1);
    color: var(--main-green);
    border: 1px solid rgba(54, 180, 155, 0.2);
}

.login-link {
    color: var(--main-green);
    font-weight: 600;
    text-decoration: none;
    padding: 10px;
    border-radius: 8px;
    transition: all 0.2s ease;
    border: 2px solid transparent;
}

.login-link:hover {
    background: rgba(27, 105, 90, 0.1);
    border-color: var(--main-green);
}

/* Responsive pour petits écrans */
@media screen and (max-height: 600px) {
    main {
        padding: 5px;
        align-items: flex-start;
        padding-top: 10px;
    }
    
    .register {
        margin: 0;
        min-height: auto;
        padding: 15px;
        gap: 12px;
    }
    
    .register h2 {
        font-size: 1.5rem;
        margin-bottom: 5px;
    }
    
    .form_reg {
        gap: 10px;
    }
    
    .register input {
        padding: 12px 14px;
        font-size: 16px;
    }
    
    .btn-register {
        padding: 14px 20px;
        font-size: 16px;
        margin-top: 5px;
    }
}

/* Responsive pour écrans très petits */
@media screen and (max-width: 350px) {
    main {
        padding: 5px;
    }
    
    .register {
        padding: 12px;
        border-radius: 15px;
        gap: 10px;
    }
    
    .register input {
        padding: 10px 12px;
        font-size: 16px;
    }
    
    .btn-register {
        padding: 12px 18px;
        font-size: 15px;
    }
}

/* Responsive pour tablettes */
@media screen and (min-width: 500px) {
    .register {
        max-width: 450px;
        padding: 30px;
    }
    
    .register h2 {
        font-size: 2rem;
    }
    
    .form_reg {
        gap: 20px;
    }
    
    .register input {
        padding: 16px 18px;
        font-size: 18px;
    }
    
    .btn-register {
        padding: 18px 28px;
        font-size: 20px;
    }
}

/* Amélioration pour les petits écrans en hauteur */
@media screen and (max-height: 500px) {
    .register {
        padding: 10px;
        gap: 8px;
    }
    
    .register h2 {
        font-size: 1.3rem;
        margin-bottom: 0;
    }
    
    .form_reg {
        gap: 8px;
    }
    
    .register input {
        padding: 10px 12px;
    }
    
    .btn-register {
        padding: 10px 16px;
        font-size: 14px;
    }
}

@media screen and (max-height: 400px) {
    .register {
        overflow-y: scroll;
    }
}