/* VARIÁVEIS CSS */
:root {
    --bg-main: #f4f7f6;
    --sidebar-bg: #1a365d;
    --sidebar-hover: #2a4365;
    --primary-color: #319795;
    --primary-dark: #285e61;
    --text-dark: #2d3748;
    --text-light: #e2e8f0;
    --white: #ffffff;
    --danger: #e53e3e;
    --success: #38a169;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --transition: all 0.3s ease;
}

/* RESET BÁSICO */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Roboto', sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-dark);
    overflow-x: hidden;
}

/* LAYOUT PRINCIPAL COM FLEXBOX */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* 1. MENU LATERAL (SIDEBAR) */

.sidebar-download {
    padding: 20px 20px 10px 20px;
    text-align: center;
}
.btn-download {
    display: block;
    background-color: var(--primary-color);
    color: var(--white);
    padding: 12px 10px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 700;
    font-size: 0.95rem;
    transition: var(--transition);
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}
.btn-download:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.3);
}

.sidebar {
    width: 280px;
    background-color: var(--sidebar-bg);
    color: var(--white);
    display: flex;
    flex-direction: column;
    box-shadow: 2px 0 10px rgba(0,0,0,0.1);
    z-index: 10;
    /* Posicionamento relativo para poder fixar o footer */
    position: relative; 
}

.logo {
    padding: 30px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.logo h2 {
    font-size: 1.8rem;
    font-weight: 700;
}

.logo span {
    color: var(--primary-color);
}

.menu {
    flex: 1;
    padding: 20px 0;
}

.menu ul {
    list-style: none;
}

.menu-link {
    display: block;
    padding: 15px 25px;
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    border-left: 4px solid transparent;
    transition: var(--transition);
}

.menu-link:hover, .menu-link.active {
    background-color: var(--sidebar-hover);
    color: var(--white);
    border-left-color: var(--primary-color);
}

/* Demonstração de Posicionamento Absolute */
.sidebar-footer {
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 20px;
    text-align: center;
    background-color: rgba(0,0,0,0.2);
    font-size: 0.9rem;
    color: #a0aec0;
}

/* 2. ÁREA PRINCIPAL */
.main-content {
    flex: 1;
    padding: 40px;
    /* Posicionamento relativo como âncora para elementos absolutos internos, se necessário */
    position: relative; 
    overflow-y: auto;
    height: 100vh;
}

.content-header h1 {
    font-size: 2.5rem;
    color: var(--sidebar-bg);
    margin-bottom: 10px;
}

.content-header p {
    font-size: 1.1rem;
    color: #718096;
    margin-bottom: 30px;
}

/* Imagem Hero e Container */
.hero-image-container {
    position: relative;
    width: 100%;
    height: 300px;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 40px;
    box-shadow: var(--shadow);
}

.hero-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(transparent, rgba(26, 54, 93, 0.9));
    color: var(--white);
    padding: 30px;
}

.hero-overlay h3 {
    font-size: 1.8rem;
    margin-bottom: 5px;
}

/* 3. FORMULÁRIO DE ACESSO (Simulação Interativa) */
.login-wrapper {
    display: flex;
    justify-content: center;
    margin-top: 20px;
}

.login-box {
    background-color: var(--white);
    width: 100%;
    max-width: 450px;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.05);
    border-top: 5px solid var(--primary-color);
    transition: var(--transition);
}

/* Efeito Transform (Hover na caixa) */
.login-box:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.login-header {
    text-align: center;
    margin-bottom: 25px;
}

.login-header h3 {
    font-size: 1.5rem;
    color: var(--sidebar-bg);
}

.login-header p {
    color: #a0aec0;
    font-size: 0.9rem;
}

.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #4a5568;
}

.input-group input {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    font-size: 1rem;
    outline: none;
    transition: var(--transition);
}

.input-group input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(49, 151, 149, 0.2);
}

/* Botão com Transform */
.btn-acesso {
    width: 100%;
    padding: 14px;
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 6px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    transition: var(--transition);
}

.btn-acesso:hover {
    background-color: var(--primary-dark);
    transform: scale(1.02); /* Requisito do Transform */
}

.btn-acesso .arrow {
    transition: transform 0.3s ease;
}

.btn-acesso:hover .arrow {
    transform: translateX(5px);
}

/* Mensagem de Sucesso (Oculta via JS) */
.success-box {
    background-color: #f0fff4;
    border: 2px solid var(--success);
    width: 100%;
    max-width: 450px;
    padding: 40px 30px;
    border-radius: 12px;
    text-align: center;
    animation: fadeIn 0.5s ease;
}

.success-box .icon-check {
    font-size: 4rem;
    margin-bottom: 15px;
}

.success-box h3 {
    color: var(--success);
    font-size: 1.8rem;
    margin-bottom: 15px;
}

.btn-outline {
    margin-top: 20px;
    padding: 10px 20px;
    background: transparent;
    border: 2px solid var(--success);
    color: var(--success);
    border-radius: 6px;
    cursor: pointer;
    font-weight: bold;
    transition: var(--transition);
}

.btn-outline:hover {
    background: var(--success);
    color: white;
}

.hidden {
    display: none !important;
}

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

/* 4. MODAIS (SUBPÁGINAS FLUTUANTES) */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    backdrop-filter: blur(5px);
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-container {
    background-color: var(--white);
    width: 90%;
    max-width: 600px;
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    transform: translateY(20px) scale(0.95);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 25px 50px rgba(0,0,0,0.25);
    max-height: 90vh;
    overflow-y: auto;
}

.modal-large {
    max-width: 900px;
}

.modal-overlay.active .modal-container {
    transform: translateY(0) scale(1);
}

.btn-close {
    position: absolute;
    top: 15px;
    right: 20px;
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--white);
    cursor: pointer;
    z-index: 10;
    transition: color 0.2s;
}

.btn-close:hover {
    color: #fbd38d;
}

.modal-header {
    background-color: var(--sidebar-bg);
    color: var(--white);
    padding: 25px 30px;
    border-bottom: 4px solid var(--primary-color);
}

.modal-body {
    padding: 30px;
    line-height: 1.7;
}

.modal-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 20px;
}

.callout {
    background-color: #ebf8ff;
    border-left: 4px solid #3182ce;
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 0 6px 6px 0;
}

.lista-detalhes, .check-list {
    margin: 15px 0 20px 20px;
}

.check-list li {
    margin-bottom: 10px;
    list-style-type: "✔️ ";
}

/* Grid Requisitos */
.req-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.req-card {
    background-color: #f7fafc;
    border: 1px solid #e2e8f0;
    padding: 20px;
    border-radius: 8px;
}

.req-card h3 {
    color: var(--primary-dark);
    margin-bottom: 15px;
    border-bottom: 2px solid #cbd5e0;
    padding-bottom: 5px;
}

.req-card ul {
    margin-left: 15px;
    font-size: 0.95rem;
}

.alert-info {
    background-color: #fffaf0;
    border: 1px solid #feebc8;
    color: #c05621;
    padding: 15px;
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
    margin-top: 20px;
}

/* Responsividade */
@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }
    .sidebar {
        width: 100%;
        height: auto;
    }
    .sidebar-footer {
        position: relative;
    }
    .main-content {
        padding: 20px;
        height: auto;
    }
}