/* Sistema de Variáveis */
:root {
    /* Colors */
    --color-bg: #ffffff;
    --color-text: #2d3748;
    --color-primary: #4c6ef5;
    --color-primary-light: #748ffc;
    --color-primary-dark: #364fc7;
    --color-secondary: #38b2ac;
    --color-success: #38a169;
    --color-warning: #d69e2e;
    --color-danger: #e53e3e;
    --color-card: #ffffff;
    --color-gray: #718096;
    --color-gray-light: #f7fafc;
    --color-border: #edf2f7;
    
    /* Gradients */
    --gradient-hero: linear-gradient(135deg, #4c6ef5 0%, #364fc7 100%);
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    
    /* Typography */
    --font-sans: 'Outfit', sans-serif;
    
    /* Transitions */
    --transition: all 0.2s ease-in-out;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
}

/* Reset & Base Styles */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
}

/* Header Styles */
.app-header {
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 0;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    gap: 3rem;
}

.brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-img {
    height: 2.5rem;
    width: auto;
}

.brand span {
    font-weight: 600;
    font-size: 1.25rem;
    color: var(--color-text);
}

/* Navigation */
.main-nav {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

.main-nav a {
    color: var(--color-gray);
    font-weight: 500;
    font-size: 1rem;
    transition: var(--transition);
    padding: 0.5rem 0;
    position: relative;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--color-primary);
}

.main-nav a:hover::after,
.main-nav a.active::after {
    transform: scaleX(1);
}

/* Actions Area */
.actions {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.search-container {
    position: relative;
}

.search-input {
    width: 280px;
    padding: 0.75rem 1.25rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    font-size: 0.95rem;
    background-color: var(--color-gray-light);
    transition: var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--color-primary-light);
    box-shadow: 0 0 0 3px rgba(76, 110, 245, 0.1);
}

.search-input::placeholder {
    color: var(--color-gray);
}

.theme-toggle {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-gray-light);
    color: var(--color-gray);
    transition: var(--transition);
    cursor: pointer;
}

.theme-toggle:hover {
    background-color: var(--color-primary-light);
    color: white;
    transform: scale(1.05);
}

/* Hero Section */
.hero-section {
    background: var(--gradient-hero);
    padding: 5rem 1.5rem;
    color: white;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.hero-content h1 {
    font-size: 2.75rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 4rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    max-width: 900px;
    margin: 0 auto;
}

.stat-item {
    text-align: center;
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: var(--radius-lg);
    backdrop-filter: blur(8px);
}

.stat-item i {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.stat-value {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 0.75rem;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
}

/* Main Container */
.main-container {
    max-width: 1200px;
    margin: 3rem auto;
    padding: 0 1.5rem;
}

/* Card Styles */
.dashboard-card {
    background: var(--color-card);
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-border);
    margin-bottom: 2rem;
    transition: var(--transition);
}

.dashboard-card:hover {
    border-color: var(--color-primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.card-header {
    padding: 1.5rem;
    border-bottom: 2px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.card-header h2 i {
    color: var(--color-primary);
    font-size: 1.5rem;
}

/* Activity Stats */
.activity-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    padding: 1.5rem;
}

.stat-card {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    padding: 1.5rem;
    background: var(--color-gray-light);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-icon {
    width: 3rem;
    height: 3rem;
    border-radius: var(--radius-md);
    background: var(--color-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.stat-info {
    flex: 1;
}

.stat-info .stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.2;
}

.stat-info .stat-label {
    font-size: 0.95rem;
    color: var(--color-gray);
}

/* Table Styles */
.table-responsive {
    padding: 1.5rem;
}

.data-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.data-table th {
    text-align: left;
    padding: 1rem 1.5rem;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-gray);
    background: var(--color-gray-light);
    border-bottom: 2px solid var(--color-border);
}

.data-table th:first-child {
    border-top-left-radius: var(--radius-md);
}

.data-table th:last-child {
    border-top-right-radius: var(--radius-md);
}

.data-table td {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.95rem;
}

.data-table tbody tr {
    transition: var(--transition);
}

.data-table tbody tr:hover {
    background-color: var(--color-gray-light);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-content h1 {
        font-size: 2.25rem;
    }

    .hero-content p {
        font-size: 1.1rem;
    }

    .activity-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header-container {
        padding: 0 1rem;
    }

    .main-nav {
        display: none;
    }

    .search-container {
        display: none;
    }

    .hero-section {
        padding: 3rem 1rem;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-stats {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .stat-item {
        padding: 1.5rem;
    }

    .activity-stats {
        grid-template-columns: 1fr;
    }

    .data-table {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .header-container {
        padding: 0 0.75rem;
    }

    .hero-content h1 {
        font-size: 1.75rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

    .stat-item {
        padding: 1rem;
    }

    .stat-value {
        font-size: 2.5rem;
    }

    .card-header {
        padding: 1rem;
    }

    .table-responsive {
        padding: 1rem;
    }

    .data-table th,
    .data-table td {
        padding: 0.75rem 1rem;
    }
}