:root {
    --primary-color: #2c3e50; /* Azul escuro profissional */
    --secondary-color: #34495e; /* Azul médio */
    --accent-color: #3498db; /* Azul claro vibrante */
    --success-color: #27ae60; /* Verde sucesso */
    --warning-color: #f39c12; /* Laranja alerta */
    --danger-color: #e74c3c; /* Vermelho erro */
    --text-color: #2c3e50;
    --text-muted: #7f8c8d;
    --light-bg: #ecf0f1;
    --white: #ffffff;
    --sidebar-width: 250px;
    --sidebar-collapsed-width: 60px;
    --top-nav-height: 60px;
}

body {
    font-family: 'Roboto', sans-serif;
    color: var(--text-color);
    background-color: var(--light-bg);
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

/* Sidebar Styles */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    width: var(--sidebar-width);
    background: linear-gradient(180deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    z-index: 1000;
    transition: all 0.3s ease;
    box-shadow: 2px 0 10px rgba(0,0,0,0.1);
    display: flex;
    flex-direction: column;
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed-width);
}

.sidebar-header {
    padding: 1rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sidebar-brand {
    color: var(--white);
    text-decoration: none;
    font-weight: 700;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
}

.sidebar-brand:hover {
    color: var(--accent-color);
    text-decoration: none;
}

.sidebar.collapsed .sidebar-brand span {
    display: none;
}

.sidebar-toggle {
    background: none;
    border: none;
    color: var(--primary-color);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

.sidebar-toggle:hover {
    background-color: var(--light-bg);
}

.sidebar-nav {
    flex: 1;
    padding: 1rem 0;
}

.sidebar-nav .nav-item {
    margin-bottom: 0.5rem;
}

.sidebar-nav .nav-link {
    color: var(--white);
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    text-decoration: none;
    transition: all 0.3s ease;
    border-radius: 0 25px 25px 0;
    margin-right: 1rem;
}

.sidebar-nav .nav-link:hover {
    background-color: rgba(255,255,255,0.1);
    color: var(--accent-color);
    transform: translateX(5px);
}

.sidebar-nav .nav-link.active {
    background-color: var(--accent-color);
    color: var(--white);
}

.sidebar.collapsed .sidebar-nav .nav-link span {
    display: none;
}

.sidebar-footer {
    padding: 1rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}

/* Main Content Styles */
.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    transition: all 0.3s ease;
}

.main-content.expanded {
    margin-left: var(--sidebar-collapsed-width);
}

/* Top Navigation */
.top-nav {
    background-color: var(--white);
    height: var(--top-nav-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 999;
}

.top-nav-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.sidebar-toggle-mobile {
    background: none;
    border: none;
    color: var(--primary-color);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

.sidebar-toggle-mobile:hover {
    background-color: var(--light-bg);
}

.page-title {
    color: var(--primary-color);
    font-weight: 600;
    margin: 0;
}

.top-nav-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-nav-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.user-name {
    color: var(--text-color);
    font-weight: 500;
    font-size: 0.9rem;
}

.user-name i {
    color: var(--primary-color);
}

.top-nav-right .btn-outline-danger {
    border-color: var(--danger-color);
    color: var(--danger-color);
    font-weight: 500;
    transition: all 0.3s ease;
}

.top-nav-right .btn-outline-danger:hover {
    background-color: var(--danger-color);
    color: var(--white);
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.top-nav-right .btn-outline-primary {
    border-color: var(--primary-color);
    color: var(--primary-color);
    font-weight: 500;
    transition: all 0.3s ease;
}

.top-nav-right .btn-outline-primary:hover {
    background-color: var(--primary-color);
    color: var(--white);
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.nav-actions .btn {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.nav-actions .btn:hover {
    background-color: var(--primary-color);
    color: var(--white);
}

/* Page Content */
.page-content {
    padding: 2rem;
    background-color: var(--light-bg);
    min-height: calc(100vh - var(--top-nav-height));
}

.messages-container {
    margin-bottom: 2rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.collapsed {
        transform: translateX(0);
        width: var(--sidebar-width);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .main-content.expanded {
        margin-left: 0;
    }
    
    .sidebar.collapsed .sidebar-brand span,
    .sidebar.collapsed .sidebar-nav .nav-link span {
        display: block;
    }
    
    .top-nav-right {
        flex-direction: column;
        gap: 0.5rem;
        align-items: flex-end;
    }
    
    .user-nav-info {
        flex-direction: column;
        align-items: flex-end;
        gap: 0.25rem;
    }
    
    .user-name {
        font-size: 0.8rem;
    }
    
    .top-nav-right .btn-outline-danger {
        font-size: 0.8rem;
        padding: 0.25rem 0.5rem;
    }
}

/* Legacy Styles (mantidos para compatibilidade) */
.navbar {
    background-color: var(--primary-color) !important;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--white) !important;
}

.nav-link {
    color: var(--white) !important;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: var(--accent-color) !important;
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}

.btn-success {
    background-color: var(--success-color);
    border-color: var(--success-color);
}

.btn-success:hover {
    background-color: #229954;
    border-color: #229954;
}

.btn-warning {
    background-color: var(--warning-color);
    border-color: var(--warning-color);
}

.btn-warning:hover {
    background-color: #e67e22;
    border-color: #e67e22;
}

.btn-danger {
    background-color: var(--danger-color);
    border-color: var(--danger-color);
}

.btn-danger:hover {
    background-color: #c0392b;
    border-color: #c0392b;
}

.btn-outline-primary {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-outline-primary:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.card {
    border: none;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
}

.card-header {
    background-color: var(--white);
    border-bottom: 1px solid var(--light-bg);
    color: var(--text-color);
}

.hero-section {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: 4rem 0;
    margin-bottom: 2rem;
}

.hero-section h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.hero-section p {
    font-size: 1.2rem;
    opacity: 0.9;
}

.feature-box {
    text-align: center;
    padding: 2rem;
    background: var(--white);
    border-radius: 8px;
    margin-bottom: 2rem;
}

.feature-box i {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.footer {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 2rem 0;
    margin-top: 3rem;
}

.social-links a {
    color: var(--white);
    margin: 0 10px;
    font-size: 1.5rem;
    transition: color 0.3s ease;
}

.social-links a:hover {
    color: var(--accent-color);
}

/* Hero Banner Styles */
.hero-banner {
    background: var(--white);
    border-radius: 15px;
    padding: 0;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.carousel-item {
    height: 400px;
}

.carousel-item img {
    height: 100%;
    object-fit: cover;
    filter: brightness(0.8);
}

.carousel-caption {
    background: rgba(0, 0, 0, 0.5);
    padding: 20px;
    border-radius: 10px;
    bottom: 40px;
}

.carousel-caption h4 {
    color: var(--white);
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.carousel-caption p {
    color: var(--white);
    font-size: 1.1rem;
    margin: 0;
}

.carousel-indicators {
    margin-bottom: 1rem;
}

.carousel-indicators button {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin: 0 5px;
}

.carousel-control-prev,
.carousel-control-next {
    width: 5%;
}

@media (max-width: 768px) {
    .carousel-item {
        height: 300px;
    }
    
    .carousel-caption {
        padding: 15px;
        bottom: 20px;
    }
    
    .carousel-caption h4 {
        font-size: 1.4rem;
    }
    
    .carousel-caption p {
        font-size: 1rem;
    }
}