body {
    background: #1e293b;
    min-height: 100vh;
    margin: 0;
    font-family: 'Segoe UI', Arial, sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.login-container {
    background: rgba(30, 41, 59, 0.95);
    border-radius: 20px;
    box-shadow: 0 8px 32px 0 rgba(4, 220, 30, 0.25), 0 1.5px 8px 0 #04dc1e44;
    padding: 40px 32px 32px 32px;
    width: 350px;
    text-align: center;
    position: relative;
    animation: fadeIn 1.2s cubic-bezier(.68,-0.55,.27,1.55);
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-40px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}
.login-icon {
    width: 90px;
    margin-bottom: 18px;
}
h2 {
    color: #04dc1e;
    margin-bottom: 28px;
    letter-spacing: 1px;
    text-shadow: 0 2px 8px #1e293b88;
}
.input-group {
    margin-bottom: 18px;
    text-align: left;
}
.input-group label {
    color: #04dc1e;
    font-weight: 500;
    margin-bottom: 6px;
    display: block;
}
.input-group input {
    width: 90%;
    margin: 0 auto;
    display: block;
    padding: 10px 12px;
    border: 1.5px solid #04dc1e;
    border-radius: 8px;
    background: #1e293b;
    color: #fff;
    font-size: 1rem;
    outline: none;
    transition: border 0.3s, box-shadow 0.3s;
}
.input-group input::placeholder {
    color: #fff;
    opacity: 1;
}
.input-group input:focus {
    border-color: #fff;
    box-shadow: 0 0 8px #04dc1e88;
}
.checkbox-group {
    display: flex;
    align-items: center;
    margin-bottom: 22px;
}
.checkbox-group input[type="checkbox"] {
    accent-color: #04dc1e;
    margin-right: 8px;
    width: 18px;
    height: 18px;
}
.checkbox-group label {
    color: #fff;
    font-size: 1rem;
}
.btn-entrar {
    width: 100%;
    padding: 12px 0;
    background: linear-gradient(90deg, #04dc1e 60%, #1e293b 100%);
    color: #1e293b;
    font-weight: bold;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    cursor: pointer;
    box-shadow: 0 2px 8px #04dc1e44;
    transition: background 0.3s, color 0.3s, transform 0.15s;
    letter-spacing: 1px;
    margin-top: 8px;
}
.btn-entrar:hover {
    background: linear-gradient(90deg, #1e293b 20%, #04dc1e 100%);
    color: #fff;
    transform: scale(1.005);
    box-shadow: 0 1px 4px #04dc1e44;
}
/* Mensagens de erro/sucesso */
.message-container {
    margin-bottom: 20px;
    padding: 12px;
    border-radius: 8px;
    background: rgba(220, 53, 69, 0.15);
    border: 1px solid rgba(220, 53, 69, 0.3);
    animation: messageSlide 0.4s ease-out;
}

.error-message {
    color: #ff6b6b;
    font-size: 0.9rem;
    margin: 0;
    font-weight: 500;
    text-align: center;
}

@keyframes messageSlide {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Efeitos extras */
.login-container::before {
    content: '';
    position: absolute;
    top: -18px; left: -18px; right: -18px; bottom: -18px;
    border-radius: 28px;
    background: linear-gradient(120deg, #04dc1e44 0%, transparent 100%);
    z-index: -1;
    filter: blur(8px);
    animation: borderGlow 2.5s infinite alternate;
}
@keyframes borderGlow {
    from { box-shadow: 0 0 12px #04dc1e44; }
    to { box-shadow: 0 0 32px #04dc1e; }
}