* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #667eea;
    --primary-dark: #5a67d8;
    --secondary: #4c51bf;
    --success: #48bb78;
    --danger: #e53e3e;
    --warning: #ed8936;
    --info: #4299e1;
    --light: #f7fafc;
    --dark: #2d3748;
    --gray: #a0aec0;
    --gray-light: #e2e8f0;
    --gray-dark: #4a5568;
    --border-radius: 8px;
    --shadow: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: #f5f5f5;
    color: var(--dark);
    line-height: 1.5;
}

/* Login */
.container-login {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
}

.login-box, .registro-box {
    background: white;
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 400px;
}

.login-box h1, .registro-box h1 {
    text-align: center;
    margin-bottom: 10px;
    color: var(--dark);
}

.subtitle {
    text-align: center;
    color: var(--gray-dark);
    margin-bottom: 30px;
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: var(--gray-dark);
    font-weight: 500;
}

.form-group input, 
.form-group select, 
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--gray-light);
    border-radius: var(--border-radius);
    font-size: 16px;
    transition: var(--transition);
}

.form-group input:focus, 
.form-group select:focus, 
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.25);
}

.form-row {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
}

.form-row .form-group {
    flex: 1;
    margin-bottom: 0;
}

.btn-primary {
    width: 100%;
    padding: 12px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-secondary {
    padding: 8px 16px;
    background: var(--gray-light);
    color: var(--gray-dark);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

.btn-secondary:hover {
    background: var(--gray);
    color: white;
}

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

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

.btn-sm {
    padding: 6px 12px;
    font-size: 14px;
}

.link-registro {
    text-align: center;
    margin-top: 20px;
    color: var(--gray-dark);
}

.link-registro a {
    color: var(--primary);
    text-decoration: none;
    cursor: pointer;
}

/* Navbar */
.navbar {
    background: white;
    padding: 15px 30px;
    box-shadow: var(--shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-brand {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary);
}

.nav-menu {
    display: flex;
    gap: 5px;
}

.nav-menu a {
    padding: 8px 15px;
    text-decoration: none;
    color: var(--gray-dark);
    font-weight: 500;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.nav-menu a:hover {
    background: var(--gray-light);
}

.nav-menu a.active {
    color: var(--primary);
    background: rgba(102, 126, 234, 0.1);
}

.user-menu {
    position: relative;
}

.user-menu-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    padding: 8px 15px;
    border-radius: var(--border-radius);
}

.user-menu-toggle:hover {
    background: var(--gray-light);
}

.user-menu-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    min-width: 200px;
    display: none;
}

.user-menu-dropdown a {
    display: block;
    padding: 10px 15px;
    text-decoration: none;
    color: var(--gray-dark);
    transition: var(--transition);
}

.user-menu-dropdown a:hover {
    background: var(--gray-light);
}

.user-menu:hover .user-menu-dropdown {
    display: block;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 30px auto;
    padding: 0 20px;
}

/* Dashboard */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    padding: 25px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.stat-card h3 {
    color: var(--gray-dark);
    font-size: 14px;
    margin-bottom: 10px;
}

.stat-number {
    font-size: 32px;
    font-weight: bold;
    color: var(--primary);
}

.card {
    background: white;
    padding: 25px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.card-header h2 {
    margin: 0;
    color: var(--dark);
}

/* Tabelas */
.header-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.filtros {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.filtros input, 
.filtros select {
    padding: 8px 12px;
    border: 1px solid var(--gray-light);
    border-radius: var(--border-radius);
}

.table-container {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    margin-bottom: 30px;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th {
    background: var(--light);
    padding: 12px 15px;
    text-align: left;
    font-weight: 600;
    color: var(--gray-dark);
    border-bottom: 1px solid var(--gray-light);
}

td {
    padding: 12px 15px;
    border-bottom: 1px solid var(--gray-light);
}

tr:last-child td {
    border-bottom: none;
}

tr:hover td {
    background: rgba(102, 126, 234, 0.05);
}

.table-actions {
    display: flex;
    gap: 8px;
}

.table-actions button {
    padding: 6px;
    border: none;
    background: none;
    cursor: pointer;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.table-actions button:hover {
    background: var(--gray-light);
}

.table-actions .edit {
    color: var(--info);
}

.table-actions .delete {
    color: var(--danger);
}

.table-actions .view {
    color: var(--success);
}

/* Status */
.status {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;