/* Reset e estilos base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

:root {
    --primary-color: #3498db;
    --secondary-color: #2980b9;
    --success-color: #27ae60;
    --danger-color: #e74c3c;
    --warning-color: #f39c12;
    --dark-color: #2c3e50;
    --light-color: #ecf0f1;
    --text-color: #333;
    --text-light: #fff;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

body {
    background-color: var(--light-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Header */
header {
    background-color: var(--dark-color);
    color: var(--text-light);
    padding: 1rem 0;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-icon {
    font-size: 1.8rem;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    padding: 0.5rem;
    width: 40px;
    height: 40px;
    position: relative;
}

.hamburger {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--text-light);
    position: relative;
    transition: var(--transition);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 25px;
    height: 2px;
    background: var(--text-light);
    transition: var(--transition);
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    top: 8px;
}

.nav-toggle[aria-expanded="true"] .hamburger {
    background: transparent;
}

.nav-toggle[aria-expanded="true"] .hamburger::before {
    transform: rotate(45deg);
    top: 0;
}

.nav-toggle[aria-expanded="true"] .hamburger::after {
    transform: rotate(-45deg);
    top: 0;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

nav ul li a {
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
    padding: 0.5rem 1rem;
    border-radius: 4px;
}

nav ul li a:hover {
    color: var(--primary-color);
    background: rgba(255,255,255,0.1);
}

/* Main Content */
main {
    padding: 2rem 0;
    min-height: calc(100vh - 200px);
    flex: 1;
}

.card {
    background: white;
    border-radius: 8px;
    box-shadow: var(--shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.15);
}

h1, h2, h3 {
    margin-bottom: 1rem;
    color: var(--dark-color);
}

h1 {
    font-size: 2rem;
}

/* Layout para conteúdo com imagem e texto */
.content-with-image {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-bottom: 2rem;
}

.content-image {
    flex: 0 0 300px;
    max-width: 100%;
    height: 300px;
    background-color: #f8f9fa;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    border: 1px solid #e9ecef;
}

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

.content-text {
    flex: 1;
    text-align: justify;
    line-height: 1.6;
}

.content-text p {
    margin-bottom: 1rem;
}

/* Form Styles */
.form-group {
    margin-bottom: 1.5rem;
    position: relative;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--dark-color);
}

input, select, textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
    transition: var(--transition);
    background: #fff;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

input.valid {
    border-color: var(--success-color);
}

input.invalid {
    border-color: var(--danger-color);
}

.form-text {
    font-size: 0.875rem;
    margin-top: 0.25rem;
    color: #666;
}

.password-strength {
    margin-top: 0.5rem;
    height: 5px;
    border-radius: 2px;
    background-color: #eee;
    overflow: hidden;
}

.password-strength-bar {
    height: 100%;
    width: 0%;
    transition: var(--transition);
}

.password-strength-weak {
    background-color: var(--danger-color);
    width: 25%;
}

.password-strength-fair {
    background-color: var(--warning-color);
    width: 50%;
}

.password-strength-good {
    background-color: #f1c40f;
    width: 75%;
}

.password-strength-strong {
    background-color: var(--success-color);
    width: 100%;
}

.password-toggle-container {
    display: flex;
    align-items: center;
    margin-top: 0.5rem;
}

.password-toggle-checkbox {
    width: 16px;
    height: 16px;
    margin-right: 8px;
    cursor: pointer;
}

.password-toggle-label {
    font-size: 0.875rem;
    color: #666;
    cursor: pointer;
    user-select: none;
}

.password-input-container {
    position: relative;
}

.password-input-container input {
    padding-right: 45px;
}

button, .btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    text-decoration: none;
}

button:hover, .btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-1px);
}

button:disabled, .btn:disabled {
    background-color: #95a5a6;
    cursor: not-allowed;
    transform: none;
}

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

.btn-success:hover {
    background-color: #219653;
}

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

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

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

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

.button-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.stat-card {
    text-align: center;
    padding: 2rem 1.5rem;
    border-left: 4px solid var(--primary-color);
}

.stat-card:nth-child(2) {
    border-left-color: var(--success-color);
}

.stat-card:nth-child(3) {
    border-left-color: var(--warning-color);
}

.stat-card:nth-child(4) {
    border-left-color: var(--danger-color);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: bold;
    margin: 0.5rem 0;
    color: var(--dark-color);
}

/* Footer */
footer {
    background-color: var(--dark-color);
    color: var(--text-light);
    text-align: center;
    padding: 2rem 0;
    margin-top: auto;
}

footer p {
    margin-bottom: 0.5rem;
}

footer a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

footer a:hover {
    text-decoration: underline;
    color: var(--secondary-color);
}

/* Pop-up Styles */
.popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    backdrop-filter: blur(2px);
}

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

.popup {
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    width: 90%;
    max-width: 450px;
    padding: 0;
    overflow: hidden;
    transform: scale(0.9) translateY(-20px);
    transition: var(--transition);
}

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

.popup-header {
    background-color: var(--dark-color);
    color: var(--text-light);
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.popup-title {
    font-size: 1.25rem;
    font-weight: bold;
    color: var(--text-light);
    margin: 0;
}

.popup-close {
    background: none;
    border: none;
    color: var(--text-light);
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
}

.popup-close:hover {
    background: rgba(255,255,255,0.1);
}

.popup-body {
    padding: 2rem;
}

/* Notificações */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    color: white;
    z-index: 1001;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transform: translateX(150%);
    transition: transform 0.3s ease-in-out;
    max-width: 350px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.notification.show {
    transform: translateX(0);
}

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

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

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

.notification-info {
    background-color: var(--primary-color);
}

.notification-icon {
    font-size: 1.2rem;
}

/* Spinner */
.spinner {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 2px solid #ffffff;
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 1s ease-in-out infinite;
}

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

/* Alert Messages */
.alert {
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
    border-left: 4px solid;
}

.alert-success {
    background-color: rgba(39, 174, 96, 0.1);
    border-color: var(--success-color);
    color: var(--success-color);
}

.alert-danger {
    background-color: rgba(231, 76, 60, 0.1);
    border-color: var(--danger-color);
    color: var(--danger-color);
}

.alert-warning {
    background-color: rgba(243, 156, 18, 0.1);
    border-color: var(--warning-color);
    color: var(--warning-color);
}

/* Page Transitions */
.page {
    display: none;
    animation: fadeIn 0.5s ease-in-out;
}

.page.active {
    display: block;
}

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

/* Focus styles para acessibilidade */
button:focus-visible,
input:focus-visible,
a:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Loading states */
.loading {
    opacity: 0.7;
    pointer-events: none;
}