:root {
    --cor-primaria: #ff9800;
    --cor-primaria-hover: #e65100;
    --cor-texto-principal: #2c2c2c;
    --cor-texto-secundario: #757575;
    --cor-fundo: #ffffff;
    --cor-fundo-secundario: #f7f4ee; 
    --cor-fundo-input: #f9f7f2;
    --cor-fundo-input-focus: #ffffff;
    --cor-borda: #e2dcd2;
    --cor-borda-focus: #ff9800;
    --cor-fundo-google: #f4efe6;
    --cor-google-azul: #4285F4;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Playfair Display', Georgia, serif;
    outline: none;
}

body {
    background-color: var(--cor-fundo-secundario);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    overflow: hidden; 
}

.container {
    display: flex;
    width: 90%;
    max-width: 1000px;
    height: 680px; 
    background-color: var(--cor-fundo);
    border-radius: 20px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15), 0 10px 20px -5px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(226, 220, 210, 0.6);
    overflow: hidden;
}

/* PAINEL DE FORMULÁRIO COM SOMBRA NA DIVISÓRIA */
.form-panel {
    flex: 1;
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    background-color: #ffffff;
    position: relative;
    z-index: 10;
    box-shadow: 8px 0 25px -5px rgba(0, 0, 0, 0.28);
}

.top-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-size: 30px;
    font-weight: 800;
    color: #000;
    letter-spacing: 1px;
    font-style: italic;
    text-decoration: none;
}

/* BOTÃO ÍCONE EXPANSÍVEL COM ANIMAÇÃO DE GIRO 360° */
.nav-toggle-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 11px;
    background-color: var(--cor-fundo-input);
    border: 1px solid var(--cor-borda);
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    color: var(--cor-primaria);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
    position: relative;
    overflow: hidden;
}

.nav-toggle-btn:hover {
    padding-left: 14px;
    padding-right: 18px;
    background-color: #ffffff;
    border-color: var(--cor-primaria);
    box-shadow: 0 4px 15px rgba(255, 152, 0, 0.25);
}

.nav-btn-icon {
    flex-shrink: 0;
    stroke: var(--cor-primaria);
    display: block;
    transform-origin: center;
    transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.nav-toggle-btn:hover .nav-btn-icon {
    transform: translateX(-3px) rotate(360deg) scale(1.1);
}

.nav-btn-text {
    display: inline-block;
    white-space: nowrap;
    overflow: hidden;
    max-width: 0;
    opacity: 0;
    margin-left: 0;
    font-size: 13px;
    font-weight: 700;
    color: var(--cor-primaria);
    transition: max-width 0.5s cubic-bezier(0.4, 0, 0.2, 1), 
                opacity 0.4s ease, 
                margin-left 0.5s ease;
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.nav-toggle-btn:hover .nav-btn-text {
    max-width: 130px;
    opacity: 1;
    margin-left: 10px;
}

.form-content {
    margin: auto;
    width: 100%;
    max-width: 340px;
    text-align: center;
    transition: transform 0.25s ease, opacity 0.25s ease;
}

.form-content.fade-out {
    opacity: 0;
    transform: translateY(-12px);
}

.form-content.fade-in {
    animation: fadeInSlide 0.35s ease forwards;
}

@keyframes fadeInSlide {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-titles h2 {
    font-size: 16px;
    color: var(--cor-texto-secundario);
    font-weight: 400;
    font-style: italic;
    margin-bottom: 5px;
}

.form-titles h1 {
    font-size: 32px;
    color: var(--cor-texto-principal);
    font-weight: 700;
    margin-bottom: 25px;
}

.input-group {
    margin-bottom: 18px;
    text-align: left;
    position: relative; 
}

.input-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--cor-texto-secundario);
    margin-bottom: 6px;
}

.input-group input {
    width: 100%;
    padding: 14px 15px;
    font-size: 15px;
    background-color: var(--cor-fundo-input);
    color: var(--cor-texto-principal);
    border: 1px solid var(--cor-borda);
    border-radius: 8px;
    transition: all 0.3s ease;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.03);
}

.input-group input#authSenha {
    padding-right: 45px;
}

.input-group input:focus {
    background-color: var(--cor-fundo-input-focus);
    border-color: var(--cor-borda-focus);
    box-shadow: 0 0 0 3px rgba(255, 152, 0, 0.15);
}

.toggle-password {
    position: absolute;
    right: 15px;
    top: 38px; 
    cursor: pointer;
    color: #888;
    display: flex;
    align-items: center;
    justify-content: center;
    user-select: none;
}

.toggle-password:hover {
    color: var(--cor-primaria);
}

/* BOTÃO PRINCIPAL COM EFEITO DE ONDA/ÁGUA */
.btn-main {
    position: relative;
    width: 100%;
    height: 52px;
    background-color: var(--cor-fundo-google);
    color: #444;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    margin-bottom: 12px;
    border: 1px solid var(--cor-borda);
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04);
    overflow: hidden;
    isolation: isolate;
    transition: border-color 0.4s ease, box-shadow 0.4s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-main:hover {
    border-color: var(--cor-primaria-hover);
    box-shadow: 0 8px 20px rgba(255, 152, 0, 0.35);
}

.btn-main-water {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    border-radius: 9px;
    pointer-events: none;
    z-index: 1;
}

.btn-main .wave-layer {
    background-color: var(--cor-primaria);
}

.btn-main .wave-layer.wave-back {
    background-color: var(--cor-primaria-hover);
}

.btn-main:hover .wave-layer {
    bottom: -170px;
    transform: translate(-50%, 0) rotate(450deg);
}

.btn-main:hover .wave-layer.wave-back {
    bottom: -160px;
    transform: translate(-50%, 0) rotate(540deg);
}

.btn-main-content {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.btn-main-icon {
    transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1), stroke 0.4s ease, color 0.4s ease;
    flex-shrink: 0;
    display: block;
    stroke: var(--cor-primaria);
    color: var(--cor-primaria);
}

.btn-main-text {
    display: inline-block;
    white-space: nowrap;
    overflow: hidden;
    max-width: 180px;
    opacity: 1;
    margin-left: 10px;
    transition: max-width 0.45s cubic-bezier(0.4, 0, 0.2, 1), 
                opacity 0.35s ease, 
                margin 0.45s ease, 
                transform 0.35s ease;
    transform: scale(1);
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 15px;
    font-weight: 600;
}

.btn-main:hover .btn-main-text {
    max-width: 0;
    opacity: 0;
    margin-left: 0;
    transform: scale(0.6);
}

.btn-main:hover .btn-main-icon {
    transform: scale(1.35);
    stroke: #ffffff !important;
    color: #ffffff !important;
}

/* BOTÃO GOOGLE */
.btn-google {
    position: relative;
    width: 100%;
    height: 52px;
    background-color: var(--cor-fundo-google);
    color: #444;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    margin-top: 8px;
    border: 1px solid var(--cor-borda);
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04);
    overflow: hidden;
    isolation: isolate;
    transition: border-color 0.4s ease, box-shadow 0.4s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-google:hover {
    border-color: #2b6cb0;
    box-shadow: 0 8px 20px rgba(66, 133, 244, 0.35);
}

.btn-google-water {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    border-radius: 9px;
    pointer-events: none;
    z-index: 1;
}

.wave-layer {
    position: absolute;
    left: 50%;
    width: 420px;
    height: 420px;
    border-radius: 41%;
    background-color: var(--cor-google-azul);
    bottom: -430px;
    transform: translate(-50%, 0) rotate(0deg);
    transition: bottom 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.wave-layer.wave-back {
    border-radius: 38%;
    background-color: #2b76eb;
    opacity: 0.85;
    transition: bottom 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-google:hover .wave-layer {
    bottom: -170px;
    transform: translate(-50%, 0) rotate(450deg);
}

.btn-google:hover .wave-layer.wave-back {
    bottom: -160px;
    transform: translate(-50%, 0) rotate(540deg);
}

.btn-google-content {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.google-icon {
    transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    flex-shrink: 0;
    display: block;
}

.google-icon path {
    transition: fill 0.4s ease;
}

.btn-google-text {
    display: inline-block;
    white-space: nowrap;
    overflow: hidden;
    max-width: 180px;
    opacity: 1;
    margin-left: 10px;
    transition: max-width 0.45s cubic-bezier(0.4, 0, 0.2, 1), 
                opacity 0.35s ease, 
                margin 0.45s ease, 
                transform 0.35s ease;
    transform: scale(1);
}

.btn-google:hover .btn-google-text {
    max-width: 0;
    opacity: 0;
    margin-left: 0;
    transform: scale(0.6);
}

.btn-google:hover .google-icon {
    transform: scale(1.35);
}

.btn-google:hover .google-icon path {
    fill: #ffffff !important;
}

/* PAINEL DE VÍDEO COM TRANSIÇÃO EM FADE */
.image-panel-wrapper {
    flex: 1;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #000000;
    overflow: hidden;
    position: relative;
    z-index: 1;
}

.video-container {
    width: 100%;
    height: 100%;
    position: relative;
}

.card-face {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    border-radius: 0;
    background-color: #000000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.6s ease-in-out, visibility 0.6s ease-in-out;
}

.card-face.active {
    opacity: 1;
    visibility: visible;
}

.card-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    border: none;
    outline: none;
    border-radius: 0;
}

#mensagemStatus {
    margin-bottom: 15px;
    padding: 12px 14px;
    font-size: 14px;
    display: none;
    word-break: break-all;
    text-align: left;
    border-radius: 8px;
}

#mensagemStatus.sucesso { 
    background: #e8f5e9; 
    color: #2e7d32; 
    display: block; 
    border: 1px solid #c8e6c9;
}

#mensagemStatus.erro { 
    background: #ffebee; 
    color: #c62828; 
    display: block; 
    border: 1px solid #ffcdd2;
}

@media (max-width: 768px) {
    body { 
        overflow-y: auto; 
        padding: 15px;
    }
    .container {
        flex-direction: column-reverse; 
        height: auto;
        width: 100%;
        margin-top: 10px;
        margin-bottom: 10px;
        border-radius: 16px;
    }
    .form-panel { 
        padding: 35px 25px; 
        box-shadow: 0 -8px 25px -5px rgba(0, 0, 0, 0.28);
    }
    .image-panel-wrapper { 
        height: 260px; 
        flex: none; 
        width: 100%; 
        padding: 0; 
    }
    .card-face { border-radius: 0; }
    .form-content { margin: 20px auto; }
}

@media (max-width: 480px) {
    .logo { font-size: 26px; }
    .form-panel { padding: 30px 18px; }
    .form-titles h1 { font-size: 24px; margin-bottom: 20px; }
    .form-titles h2 { font-size: 14px; }
    .image-panel-wrapper { height: 210px; }
}