/* --- VARIABILI COLORI --- */
:root {
    --primary-color: #b5e720; /* Verde Powandgo */
    --primary-dark: #7fa216;
    --text-dark: #1e2a38;
    --text-light: #6b7280;
    --white: #ffffff;
    --border-color: #e2e8f0;
}

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

body {
    /* DEFINIZIONE SFONDO ANIMATO */
    /* Mescoliamo: Blu scuro, un blu petrolio e il verde Powandgo */
    background: linear-gradient(-45deg, #0d1b2a, #1e2a38, #2e5c32, #76bc21);
    background-size: 400% 400%; /* Ingrandiamo lo sfondo per poterlo muovere */
    
    /* Attiviamo l'animazione: dura 15 secondi e si ripete all'infinito */
    animation: gradientAnimation 8s ease infinite;
    
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* --- ANIMAZIONE DELLO SFONDO (Keyframes) --- */
@keyframes gradientAnimation {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* --- CARD LOGIN --- */
.login-card {
    background-color: var(--white);
    width: 100%;
    max-width: 420px;
    padding: 40px;
    border-radius: 12px; /* Arrotondamento leggermente più morbido */
    /* Aumentiamo l'ombra per far staccare bene la card dallo sfondo colorato */
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2); 
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* --- HEADER E LOGO --- */
.card-header {
    text-align: center;
    margin-bottom: 30px;
}

.brand-logo {
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
}

.logo-img {
    max-width: 220px;
    height: auto;
    display: block;
}

.card-header h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
}

.card-header p {
    font-size: 14px;
    color: var(--text-light);
    margin-top: 5px;
}

/* --- MESSAGGIO DI ERRORE --- */
.login-error {
    width: 100%;
    box-sizing: border-box;
    background-color: #fdecea;
    border: 1px solid #f5c2c0;
    color: #b42318;
    font-size: 16px;
    font-weight: 600;
    padding: 12px 14px;
    border-radius: 6px;
    margin-bottom: 20px;
    text-align: center;
    animation: loginErrorPulse 1.2s ease-in-out infinite;
}

/* lampeggio "morbido" (dissolvenza) invece del blink secco a scatti:
   attira comunque l'attenzione ma resta leggibile e meno fastidioso */
@keyframes loginErrorPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.45; }
}

/* --- INPUT FIELDS --- */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 12px;
    color: #9ca3af;
    font-size: 20px;
    pointer-events: none;
}

input {
    width: 100%;
    padding: 12px 12px 12px 40px;
    padding-right: 40px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 15px;
    color: var(--text-dark);
    transition: all 0.2s ease;
    background-color: #fff;
}

input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(181, 231, 32, 0.45); /* Alone verde più evidente su sfondo scuro */
}

input::placeholder {
    color: #d1d5db;
}

/* --- OCCHIO PASSWORD --- */
.toggle-password {
    position: absolute;
    right: 12px;
    color: #9ca3af;
    font-size: 20px;
    cursor: pointer;
    user-select: none;
    transition: color 0.2s;
}

.toggle-password:hover {
    color: var(--text-dark);
}

/* --- LINK E BOTTONI --- */
.form-options {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 25px;
}

.forgot-link {
    font-size: 13px;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.forgot-link:hover {
    text-decoration: underline;
}

.btn-primary {
    width: 100%;
    padding: 14px;
    background-color: var(--primary-color);
    color: var(--text-dark);
    font-size: 15px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
    box-shadow: 0 4px 6px rgba(181, 231, 32, 0.4);
}

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

.btn-primary:active {
    transform: scale(0.98); /* Piccolo effetto pressione al click */
}

/* --- FOOTER --- */
.card-footer {
    margin-top: 30px;
    text-align: center;
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
}

.card-footer p {
    font-size: 12px;
    color: #9ca3af;
}