:root {
    /* MODO DIA (LIMPO & ELEGANTE) */
    --bg-bg: linear-gradient(135deg, #eef2f6 0%, #e4eaf1 100%);
    --bg-dark: #eef2f6;
    --senai-red: #ff2b2b;
    --senai-red-dark: #cc0000;
    --glass-bg: #f8fafc;
    --glass-bg-rgba: rgba(248, 250, 252, 0.94);
    /* Mais opaco para leitura */
    --glass-border: rgba(185, 28, 28, 0.14);
    --text-primary: #172033;
    --text-secondary: #526070;
    --sombra-glow: 0 24px 60px rgba(15, 23, 42, 0.12);
    --particle-color: #b91c1c;
    --transition-theme: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-tema="escuro"] {
    /* MODO NOITE (DEEP BLACK & GLOW) */
    --bg-bg: radial-gradient(circle at 50% 50%, #121214 0%, #000000 100%);
    --bg-dark: #000000;
    --senai-red-dark: #800000;
    --glass-bg: #0f0f12;
    --glass-bg-rgba: rgba(10, 10, 12, 0.92);
    --glass-border: rgba(255, 43, 43, 0.2);
    --text-primary: #ffffff;
    --text-secondary: #b0b0b5;
    --sombra-glow: 0 25px 70px rgba(0, 0, 0, 0.9);
    --particle-color: #ff2b2b;
}

* {
    transition: background 0.6s ease, color 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
}


/* Background Shapes */
.login-bg {
    width: 100vw;
    height: 100vh;
    background: var(--bg-bg);
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
}

#particles-js {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 1;
    pointer-events: none;
}

.login-bg::before {
    content: "";
    position: absolute;
    top: -10%;
    left: -5%;
    width: 45%;
    height: 45%;
    background: linear-gradient(135deg, var(--senai-red-dark), transparent);
    clip-path: polygon(0 0, 100% 0, 0 100%);
    opacity: 0.15;
    filter: blur(40px);
    z-index: 0;
}

.login-bg::after {
    content: "";
    position: absolute;
    bottom: -5%;
    right: -5%;
    width: 50%;
    height: 50%;
    background: linear-gradient(315deg, var(--senai-red-dark), transparent);
    clip-path: polygon(100% 0, 100% 100%, 0 100%);
    opacity: 0.15;
    filter: blur(40px);
    z-index: 0;
}

/* Login Container */
.login-box {
    position: relative;
    z-index: 100;
    /* Sempre no topo */
    width: 90%;
    max-width: 440px;
    padding: 40px;
    background: var(--glass-bg);
    background: var(--glass-bg-rgba);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    box-shadow: var(--sombra-glow);
    animation: fadeInUp 0.8s ease-out forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.div-img {
    width: 100%;
    display: flex;
    justify-content: center;
    margin-bottom: 10px;
}

#senai-logo {
    max-width: 250px;
    filter: drop-shadow(0 0 10px rgba(255, 43, 43, 0.2));
    /* Em modo claro, o logo do SENAI se destaca naturalmente, em modo escuro o glow ajuda */
    transition: var(--transition-smooth);
}

#senai-logo:hover {
    transform: scale(1.05);
}

/* Inputs Section */
.div-inputs-chefe {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.div-input {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--glass-bg-rgba);
    /* Usar a variável do tema */
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 0 16px;
    height: 56px;
    transition: var(--transition-smooth);
}

.div-input:focus-within {
    background: var(--glass-bg);
    border-color: var(--senai-red);
    box-shadow: 0 0 15px rgba(255, 43, 43, 0.2);
}

.div-input i {
    color: var(--senai-red);
    /* Ícones agora em vermelho para destaque */
    font-size: 1.2rem;
    margin-right: 12px;
    flex-shrink: 0;
}

.div-input:focus-within i {
    color: var(--senai-red);
}

.input {
    flex: 1;
    /* Ocupa o espaço disponível sem empurrar os outros */
    background: transparent;
    border: none;
    outline: none;
    padding: 10px 0;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 400;
}

.input::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}

/* Eye and Scan Buttons */
.btnEsp {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.2rem;
    padding: 8px;
    margin-left: 8px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
}

.btnEsp:hover {
    color: var(--senai-red);
}

/* Action Buttons */
.div-btn {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 10px;
}

.btn {
    width: 100%;
    height: 52px;
    background: linear-gradient(135deg, var(--senai-red), var(--senai-red-dark));
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.05rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    box-shadow: 0 8px 20px rgba(255, 43, 43, 0.3);
    transition: var(--transition-smooth);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 25px rgba(255, 43, 43, 0.4);
    filter: brightness(1.1);
}

.btn:active {
    transform: translateY(0);
}

#trocarForm {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    align-self: center;
    text-align: center;
}

#trocarForm:hover {
    color: var(--senai-red);
    text-decoration: underline;
}

/* Error Messages (if any) */
.div-msg-erro {
    background: rgba(255, 43, 43, 0.15);
    border: 1px solid var(--senai-red);
    color: var(--corDestaque);
    padding: 12px;
    border-radius: 10px;
    font-size: 0.9rem;
    text-align: center;
    font-weight: 500;
    margin-bottom: 10px;
}

/* Media Queries */
@media (max-width: 480px) {
    .login-box {
        width: 95%;
        padding: 30px 20px;
    }

    .login-bg::before,
    .login-bg::after {
        display: none;
    }
}