/* Reset e Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Cores tema escuro */
    --bg-primary: #121212;
    --bg-secondary: #1E1E1E;
    --bg-elevated: #2C2C2C;
    
    /* Texto */
    --text-primary: #FFFFFF;
    --text-secondary: #B0B0B0;
    --text-disabled: #757575;
    
    /* Cores de status */
    --color-success: #4CAF50;
    --color-critical: #F44336;
    --color-warning: #FF9800;
    --color-caution: #FFC107;
    --color-neutral: #757575;
    
    /* Elementos UI */
    --border-radius: 12px;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-elevated: 0 4px 16px rgba(0, 0, 0, 0.4);
    
    /* Espaçamento */
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Screens */
.screen {
    display: none;
    min-height: 100vh;
    flex-direction: column;
}

.screen.active {
    display: flex;
}

/* Top Bar */
.top-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--bg-secondary);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.screen-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

.btn-back {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 20px;
    padding: var(--spacing-xs);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    transition: background-color 0.2s;
}

.btn-back:hover {
    background-color: var(--bg-elevated);
}

/* Content */
.content {
    flex: 1;
    padding: var(--spacing-lg);
    padding-bottom: 80px;
    overflow-y: auto;
}

/* Login Screen */
.login-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: var(--spacing-xl);
}

.logo-container {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.logo-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-success) 0%, #66BB6A 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    box-shadow: var(--shadow-elevated);
}

.logo-icon i {
    font-size: 40px;
    color: white;
}

.app-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.app-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
}

.login-form {
    width: 100%;
    max-width: 400px;
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.form-input {
    width: 100%;
    padding: 16px;
    font-size: 16px;
    background-color: var(--bg-secondary);
    border: 2px solid transparent;
    border-radius: var(--border-radius);
    color: var(--text-primary);
    transition: all 0.2s;
    font-family: inherit;
}

.form-input:focus {
    outline: none;
    border-color: var(--color-success);
    background-color: var(--bg-elevated);
}

.form-input::placeholder {
    color: var(--text-disabled);
}

select.form-input {
    cursor: pointer;
}

/* Buttons */
.btn-primary {
    width: 100%;
    padding: 16px;
    font-size: 16px;
    font-weight: 600;
    background: linear-gradient(135deg, var(--color-success) 0%, #66BB6A 100%);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    min-height: 56px;
    font-family: inherit;
    box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(76, 175, 80, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    padding: 14px 24px;
    font-size: 16px;
    font-weight: 500;
    background-color: var(--bg-elevated);
    color: var(--text-primary);
    border: 2px solid var(--bg-elevated);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.2s;
    font-family: inherit;
}

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

.forgot-password {
    display: block;
    text-align: center;
    color: var(--color-success);
    text-decoration: none;
    margin-top: var(--spacing-md);
    font-size: 14px;
    font-weight: 500;
}

.terms-text {
    text-align: center;
    font-size: 12px;
    color: var(--text-disabled);
    margin-top: var(--spacing-lg);
}

/* Divider */
.divider {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background-color: var(--bg-elevated);
}

.divider span {
    font-size: 14px;
    color: var(--text-disabled);
    font-weight: 500;
}

/* Unit Selector */
.unit-selector {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 10px 16px;
    background-color: var(--bg-elevated);
    border-radius: 20px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.unit-selector:hover {
    background-color: var(--bg-primary);
}

.unit-selector i:first-child {
    color: var(--color-success);
}

.unit-selector span {
    font-weight: 500;
}

.unit-selector i:last-child {
    font-size: 12px;
    color: var(--text-secondary);
}

/* Main Actions */
.main-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.action-card {
    background-color: var(--bg-secondary);
    border: none;
    border-radius: var(--border-radius);
    padding: var(--spacing-xl) var(--spacing-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: var(--shadow);
    min-height: 140px;
}

.action-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-elevated);
    background-color: var(--bg-elevated);
}

.action-card:active {
    transform: translateY(0);
}

.action-card i {
    font-size: 40px;
    color: var(--color-success);
}

.action-card span {
    font-size: 16px;
    font-weight: 600;
    text-align: center;
    color: var(--text-primary);
}

/* Quick Stats */
.quick-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.stat-item {
    background-color: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
}

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

.stat-value {
    font-size: 32px;
    font-weight: 700;
}

.stat-critical .stat-value {
    color: var(--color-critical);
}

.stat-warning .stat-value {
    color: var(--color-warning);
}

/* Bottom Navigation */
.bottom-nav {
    display: flex;
    justify-content: space-around;
    align-items: center;
    background-color: var(--bg-secondary);
    padding: var(--spacing-xs) 0;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.3);
    z-index: 100;
}

.nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: var(--spacing-sm) 0;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.2s;
    font-family: inherit;
}

.nav-item:hover {
    color: var(--text-primary);
}

.nav-item.active {
    color: var(--color-success);
}

.nav-item i {
    font-size: 20px;
}

.nav-item span {
    font-size: 12px;
    font-weight: 500;
}

/* Filters */
.filters-container {
    display: flex;
    gap: var(--spacing-sm);
    padding: 0 var(--spacing-lg) var(--spacing-md);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.filter-chip {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 10px 16px;
    background-color: var(--bg-secondary);
    border: 2px solid transparent;
    border-radius: 20px;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
    font-family: inherit;
}

.filter-chip:hover {
    background-color: var(--bg-elevated);
}

.filter-chip.active {
    border-color: var(--color-success);
    background-color: rgba(76, 175, 80, 0.1);
}

.filter-chip i {
    font-size: 12px;
}

/* Alertas Content */
.alertas-content {
    padding-top: 0;
}

.alert-section {
    margin-bottom: var(--spacing-xl);
}

.alert-section-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    padding: 0 4px;
}

.alert-badge {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.alert-badge.critical {
    background-color: var(--color-critical);
}

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

.alert-badge.caution {
    background-color: var(--color-caution);
}

.alert-badge.neutral {
    background-color: var(--color-neutral);
}

.alert-section-title {
    font-size: 18px;
    font-weight: 600;
}

.alert-section-title.critical {
    color: var(--color-critical);
}

.alert-section-title.warning {
    color: var(--color-warning);
}

.alert-section-title.caution {
    color: var(--color-caution);
}

.alert-section-title.neutral {
    color: var(--color-neutral);
}

.alert-count {
    font-size: 16px;
    color: var(--text-secondary);
    font-weight: 500;
}

.alert-items {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.alert-card {
    background-color: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    transition: all 0.2s;
    box-shadow: var(--shadow);
}

.alert-card:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-elevated);
}

.alert-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.alert-card-info {
    flex: 1;
}

.alert-card-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.alert-card-details {
    font-size: 14px;
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.btn-print-small {
    padding: 8px 16px;
    font-size: 12px;
    background-color: var(--bg-elevated);
    color: var(--text-primary);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s;
    font-weight: 500;
    white-space: nowrap;
}

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

/* Profile Screen */
.profile-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.profile-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background-color: var(--bg-secondary);
    border-radius: var(--border-radius);
}

.profile-avatar {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-success) 0%, #66BB6A 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.profile-avatar i {
    font-size: 40px;
    color: white;
}

.profile-details h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 4px;
}

.profile-details p {
    font-size: 14px;
    color: var(--text-secondary);
}

/* Settings List */
.settings-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.setting-item {
    background-color: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    border: none;
    text-align: left;
    cursor: default;
}

.setting-button {
    cursor: pointer;
    transition: all 0.2s;
}

.setting-button:hover {
    background-color: var(--bg-elevated);
}

.setting-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex: 1;
}

.setting-info i {
    font-size: 20px;
    color: var(--color-success);
    width: 24px;
    text-align: center;
}

.setting-info h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 2px;
}

.setting-info p {
    font-size: 14px;
    color: var(--text-secondary);
}

.logout-btn {
    color: var(--color-critical);
}

.logout-btn i {
    color: var(--color-critical);
}

/* Toggle Switch */
.switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 28px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--bg-elevated);
    transition: 0.3s;
    border-radius: 34px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 4px;
    bottom: 4px;
    background-color: var(--text-secondary);
    transition: 0.3s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--color-success);
}

input:checked + .slider:before {
    transform: translateX(22px);
    background-color: white;
}

.setting-select {
    padding: 8px 12px;
    background-color: var(--bg-elevated);
    border: none;
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    cursor: pointer;
    font-family: inherit;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--bg-secondary);
    border-radius: var(--border-radius);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-elevated);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--bg-elevated);
}

.modal-header h3 {
    font-size: 20px;
    font-weight: 600;
}

.btn-close-modal {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 28px;
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s;
}

.btn-close-modal:hover {
    background-color: var(--bg-elevated);
    color: var(--text-primary);
}

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
}

.etiqueta-preview {
    background-color: white;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-lg);
    color: #000;
    min-height: 200px;
}

.modal-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.modal-actions button {
    flex: 1;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 64px;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 18px;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.empty-state p {
    font-size: 14px;
}

/* Responsive */
@media (min-width: 768px) {
    .content {
        max-width: 1200px;
        margin: 0 auto;
        padding-left: var(--spacing-xl);
        padding-right: var(--spacing-xl);
    }
    
    .main-actions {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        max-width: 800px;
        margin: 0 auto var(--spacing-xl);
    }
    
    .quick-stats {
        max-width: 800px;
        margin: 0 auto;
    }
}

/* Loading Animation */
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--bg-elevated);
    border-top-color: var(--color-success);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* Smooth Transitions */
.screen {
    animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}