:root {
    --radius: 12px;
    --transition: 0.25s cubic-bezier(.4,.2,.2,1);
}

/* Background mais rico */
body {
    margin: 0;
    font-family: 'Raleway', sans-serif;

    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;

    background: radial-gradient(circle at 20% 20%, #1a1f35, #0b0d16 70%);
    color: var(--text-primary);
}

/* Card mais refinado */
.card {
    width: 400px;
    padding: 36px;

    border-radius: var(--radius);

    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);

    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);

    box-shadow:
        0 40px 100px rgba(0,0,0,0.8),
        inset 0 1px 0 rgba(255,255,255,0.06);

    position: relative;
    overflow: hidden;

    transition: var(--transition);
    animation: fadeInUp 0.6s ease;
}

/* Glow lateral sutil */
.card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, transparent, rgba(92,176,255,0.15), transparent);
    opacity: 0;
    transition: var(--transition);
}

.card:hover::before {
    opacity: 1;
}


/* Título */
.card h2 {
    font-weight: 700;
    letter-spacing: 0.1em;
    text-align: center;
    margin-bottom: 28px;
}

.card h2 span {
    background: linear-gradient(90deg, #5cb0ff, #7c5cff);
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Inputs */
.form-group {
    margin-bottom: 20px;
    position: relative;
}

.form-label {
    font-size: 10px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    opacity: 0.6;
    margin-bottom: 6px;
    display: block;
}

/* Input com melhor UX */
.form-control {
    width: 100%;
    padding: 12px 42px 12px 42px; /* esquerda e direita iguais */

    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.08);

    background: rgba(255,255,255,0.05);
    color: #fff;

    outline: none;
}

/* Efeito mais suave e moderno */
.form-control:focus {
    border-color: #5cb0ff;
    box-shadow: 0 0 0 4px rgba(92,176,255,0.12);
    background: rgba(255,255,255,0.05);
}

/* Ícone */
.input-icon {
    position: absolute;
    left: 14px;
    top: 65%;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
}

/* Botão mais premium */
button[type="submit"] {
    width: 100%;
    padding: 13px;

    border: none;
    border-radius: 10px;

    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;

    color: #fff;
    background: linear-gradient(90deg, #5cb0ff, #7c5cff);

    cursor: pointer;
    position: relative;
    overflow: hidden;

    transition: var(--transition);
}

/* Glow no hover */
button[type="submit"]:hover {
    transform: translateY(-2px);
    box-shadow:
        0 10px 25px rgba(92,176,255,0.35),
        0 0 20px rgba(124,92,255,0.2);
}

/* Shine melhorado */
button[type="submit"]::after {
    content: '';
    position: absolute;
    top: 0;
    left: -120%;
    width: 50%;
    height: 100%;
    background: rgba(255,255,255,0.2);
    transform: skewX(-25deg);
}

button[type="submit"]:hover::after {
    animation: shine 0.7s ease forwards;
}

/* Alert mais elegante */
.alert {
    padding: 10px;
    background: rgba(255, 80, 80, 0.08);
    border: 1px solid rgba(255, 80, 80, 0.2);
    color: #ffb3b3;
    border-radius: 10px;
}

/* Animações */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes shine {
    100% {
        left: 140%;
    }
}

.form-control {
    color: #fff !important;
    background: rgba(255,255,255,0.05) !important;
    height: 48px;
    line-height: 48px;
}

.form-control::placeholder {
    color: rgba(255,255,255,0.5);
}

/* remove autofill bug feio do Chrome */
input:-webkit-autofill {
    -webkit-box-shadow: 0 0 0 1000px #1a1f35 inset !important;
    -webkit-text-fill-color: #fff !important;
}

.password-group {
    position: relative;
}

.toggle-password {
    position: absolute;
    right: 14px;
    top: 65%;
    transform: translateY(-50%);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;

    cursor: pointer;
    opacity: 0.7;
}

.toggle-password:hover {
    opacity: 1;
}