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

:root {
    --primary-color: #2563eb;
    --secondary-color: #64748b;
    --success-color: #16a34a;
    --danger-color: #dc2626;
    --warning-color: #f59e0b;
    --background-color: #f8fafc;
    --card-background: #ffffff;
    --text-color: #1e293b;
    --border-color: #e2e8f0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

/* Welcome Card */
.welcome-card {
    background: var(--card-background);
    border-radius: 12px;
    padding: 48px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    text-align: center;
    max-width: 500px;
    width: 100%;
}

.welcome-card h1 {
    color: var(--primary-color);
    font-size: 48px;
    margin-bottom: 8px;
}

.welcome-card h2 {
    font-size: 24px;
    color: var(--text-color);
    font-weight: 600;
    margin-bottom: 16px;
}

.welcome-card p {
    color: var(--secondary-color);
    margin-bottom: 32px;
}

/* Login Card */
.login-card {
    background: var(--card-background);
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    width: 100%;
    max-width: 400px;
}

.login-card h1 {
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 8px;
}

.login-card h2 {
    text-align: center;
    margin-bottom: 32px;
    color: var(--text-color);
    font-weight: 500;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-color);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-row {
    display: flex;
    gap: 12px;
    align-items: flex-end;
    flex-wrap: wrap;
}

.form-row .form-group {
    flex: 1;
    min-width: 150px;
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-block;
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: #1d4ed8;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

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

.btn-secondary:hover {
    background-color: #475569;
}

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

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

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

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

/* Navbar */
.navbar {
    background-color: var(--card-background);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-container h1 {
    color: var(--primary-color);
    font-size: 24px;
}

.nav-items {
    display: flex;
    align-items: center;
    gap: 20px;
}

#username {
    font-weight: 500;
    color: var(--text-color);
}

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

.card {
    background: var(--card-background);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.card h2 {
    margin-bottom: 20px;
    color: var(--text-color);
    font-size: 20px;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
    border-bottom: 2px solid var(--border-color);
}

.tab-btn {
    padding: 10px 20px;
    background: none;
    border: none;
    color: var(--secondary-color);
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.tab-btn:hover {
    color: var(--primary-color);
}

.tab-btn.active {
    color: var(--primary-color);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--primary-color);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Upload Section */
.upload-section {
    padding: 20px;
    background-color: var(--background-color);
    border-radius: 8px;
}

.upload-section p {
    margin-bottom: 12px;
    color: var(--secondary-color);
    font-size: 14px;
}

input[type="file"] {
    margin-bottom: 16px;
}

.upload-result {
    margin-top: 20px;
    padding: 16px;
    border-radius: 6px;
    display: none;
}

.upload-result.success {
    background-color: #dcfce7;
    border: 1px solid #86efac;
    color: #166534;
    display: block;
}

.upload-result.error {
    background-color: #fee2e2;
    border: 1px solid #fca5a5;
    color: #991b1b;
    display: block;
}

/* Table */
.table-container {
    overflow-x: auto;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

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

thead {
    background-color: var(--background-color);
}

th {
    padding: 12px;
    text-align: left;
    font-weight: 600;
    color: var(--text-color);
    border-bottom: 2px solid var(--border-color);
}

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

tbody tr:hover {
    background-color: var(--background-color);
}

.status-badge {
    padding: 4px 12px;
    border-radius: 16px;
    font-size: 12px;
    font-weight: 500;
    display: inline-block;
}

.status-active {
    background-color: #dcfce7;
    color: #166534;
}

.status-inactive {
    background-color: #fee2e2;
    color: #991b1b;
}

.action-buttons {
    display: flex;
    gap: 8px;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.4);
}

.modal-content {
    background-color: var(--card-background);
    margin: 10% auto;
    padding: 30px;
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.close {
    color: var(--secondary-color);
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    line-height: 20px;
}

.close:hover {
    color: var(--text-color);
}

/* Stats */
.stats {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
    padding: 16px;
    background-color: var(--background-color);
    border-radius: 8px;
}

.stat-item {
    flex: 1;
    text-align: center;
}

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

.stat-label {
    font-size: 14px;
    color: var(--secondary-color);
}

/* Messages */
.error-message {
    color: var(--danger-color);
    font-size: 14px;
    margin-top: 12px;
    display: none;
}

.error-message.show {
    display: block;
}

.success-message {
    color: var(--success-color);
    font-size: 14px;
    margin-top: 12px;
}

/* Responsive */
@media (max-width: 768px) {
    .dashboard-container {
        padding: 0 12px;
    }

    .card {
        padding: 16px;
    }

    .form-row {
        flex-direction: column;
    }

    .form-row .form-group {
        width: 100%;
    }

    .stats {
        flex-direction: column;
        gap: 12px;
    }

    .nav-container {
        flex-direction: column;
        gap: 12px;
    }

    .action-buttons {
        flex-direction: column;
    }

    table {
        font-size: 14px;
    }

    th, td {
        padding: 8px;
    }
}

/* Loading Spinner */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Filter Section */
.filter-section {
    background-color: var(--background-color);
    padding: 20px;
    border-radius: 8px;
}

/* Estilos para Troca de Senha */
.change-password-card {
    background: var(--card-background);
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    width: 100%;
    max-width: 400px;
}

.change-password-card h1 {
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 8px;
}

.change-password-card h2 {
    text-align: center;
    margin-bottom: 20px;
    color: var(--text-color);
    font-weight: 500;
}

.warning-message {
    background-color: #fff3cd;
    border: 1px solid #ffc107;
    color: #856404;
    padding: 12px;
    border-radius: 6px;
    margin-bottom: 20px;
    text-align: center;
    font-size: 14px;
}

.change-password-card .success-message {
    color: #155724;
    background-color: #d4edda;
    border: 1px solid #c3e6cb;
    padding: 12px;
    border-radius: 6px;
    margin-top: 12px;
    display: none;
    text-align: center;
}

.change-password-card .success-message.show {
    display: block;
}

.change-password-card .error-message {
    color: var(--danger-color);
    background-color: #fee2e2;
    border: 1px solid #fca5a5;
    padding: 12px;
    border-radius: 6px;
    margin-top: 12px;
    display: none;
    text-align: center;
}

.change-password-card .error-message.show {
    display: block;
}

.change-password-card small {
    color: var(--secondary-color);
    font-size: 0.875em;
    display: block;
    margin-top: 4px;
}

/* Melhorias de responsividade para o dashboard */
html, body {
    overflow-x: hidden;
}

body {
    min-height: 100vh;
    overflow-y: auto;
}

/* Container responsivo */
.dashboard-container {
    max-width: 100%;
    padding: 20px 15px;
}

/* Cards responsivos */
.card {
    overflow-x: auto;
}

/* Tabelas responsivas */
.table-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

table {
    min-width: 600px;
}

/* Modal responsivo */
.modal-content {
    max-height: 90vh;
    overflow-y: auto;
    margin: 5% auto;
}

/* Formulários responsivos */
@media (max-width: 768px) {
    .form-row {
        flex-direction: column;
    }
    
    .form-row .form-group {
        width: 100%;
        margin-bottom: 15px;
    }
    
    .tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .tab-btn {
        white-space: nowrap;
        min-width: fit-content;
    }
    
    .stats {
        flex-direction: column;
    }
    
    .stat-item {
        width: 100%;
        padding: 15px;
        margin-bottom: 10px;
    }
    
    .action-buttons {
        flex-direction: column;
        gap: 5px;
    }
    
    .action-buttons button {
        width: 100%;
    }
    
    .modal-content {
        width: 95%;
        padding: 20px;
    }
    
    table {
        font-size: 12px;
    }
    
    th, td {
        padding: 8px 5px;
    }
}

/* Ajustes para telas muito pequenas */
@media (max-width: 480px) {
    .dashboard-container {
        padding: 15px 10px;
    }
    
    .card {
        padding: 15px;
        margin-bottom: 15px;
    }
    
    .card h2 {
        font-size: 18px;
    }
    
    .btn {
        padding: 8px 12px;
        font-size: 13px;
    }
    
    .navbar {
        padding: 10px 0;
    }
    
    .nav-container {
        padding: 0 10px;
    }
    
    .nav-container h1 {
        font-size: 16px;
    }
    
    .nav-item span {
        display: none;
    }
    
    .nav-icon {
        width: 20px;
        height: 20px;
    }
}

/* Scroll suave */
* {
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
}

/* Prevenir zoom indesejado no iOS */
input, textarea, select {
    font-size: 16px !important;
}

/* Ajustes para landscape */
@media (orientation: landscape) and (max-height: 500px) {
    .navbar {
        position: relative;
    }
    
    .dashboard-container {
        padding-top: 10px;
    }
    
    .card {
        padding: 10px 15px;
    }
}