:root {
    --primary-color: #1976D2;
    --success-color: #388E3C;
    --warning-color: #F57C00;
    --danger-color: #D32F2F;
    --purple-color: #7B1FA2;
    --background-color: #fafafa;
    --surface-color: #ffffff;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --border-color: #e0e0e0;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.12);
    --border-radius: 8px;
    --transition: all 0.3s ease;
    --nav-height: 70px;
    --header-height: 60px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--background-color);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.app-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--surface-color);
    box-shadow: var(--shadow);
    z-index: 1000;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0 1rem;
    max-width: 1200px;
    margin: 0 auto;
}

.header-content h1 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.header-actions {
    display: flex;
    gap: 0.5rem;
}

.btn-icon {
    width: 40px;
    height: 40px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-icon:hover {
    background: var(--border-color);
    color: var(--primary-color);
}

/* Main Content */
.app-main {
    margin-top: var(--header-height);
    margin-bottom: var(--nav-height);
    padding: 1rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    flex: 1;
    min-height: calc(100vh - var(--header-height) - var(--nav-height));
}

.app-section {
    display: none;
    min-height: calc(100vh - var(--header-height) - var(--nav-height) - 2rem);
}

.app-section.active {
    display: block;
}

/* Buttons */
.btn {
    padding: 0.875rem 1.75rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    justify-content: center;
    min-height: 48px;
    letter-spacing: 0.025em;
    box-shadow: var(--shadow);
}

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

.btn-primary:hover {
    background: #1565C0;
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

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

.btn-success:hover {
    background: #388E3C;
}

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

.btn-secondary:hover {
    background: #424242;
}

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

.btn-danger:hover {
    background: #D32F2F;
}

/* Scanner Section */
.scanner-container {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

.camera-preview {
    position: relative;
    width: 100%;
    max-width: 500px;
    margin: 0 auto 1.5rem;
    border-radius: var(--border-radius);
    overflow: hidden;
    background: #000;
    aspect-ratio: 3/4;
    min-height: 400px;
    box-shadow: var(--shadow-hover);
    transition: all 0.3s ease;
}

.camera-preview:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

#cameraVideo {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.scanner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}

.scan-frame {
    width: 85%;
    height: 75%;
    border: 3px solid var(--primary-color);
    border-radius: var(--border-radius);
    position: relative;
    animation: pulse 2s infinite;
    max-width: 350px;
}

.scan-frame::before,
.scan-frame::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 3px solid var(--warning-color);
}

.scan-frame::before {
    top: -3px;
    left: -3px;
    border-right: none;
    border-bottom: none;
}

.scan-frame::after {
    bottom: -3px;
    right: -3px;
    border-left: none;
    border-top: none;
}

.scan-instructions {
    position: absolute;
    bottom: 1rem;
    left: 1rem;
    right: 1rem;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 0.75rem;
    border-radius: var(--border-radius);
    text-align: center;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.scanner-controls {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.scanner-controls .btn {
    min-width: 120px;
    padding: 1rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
}

.processing-status {
    text-align: center;
    padding: 2rem;
    background: var(--surface-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-top: 1rem;
    border: 2px solid var(--primary-color);
    animation: fadeIn 0.3s ease;
}

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

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Documents Section */
.documents-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.documents-header h2 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
}

.search-container {
    position: relative;
    min-width: 250px;
}

.search-container input {
    width: 100%;
    padding: 0.75rem 2.5rem 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
}

.search-container input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
}

.search-container i {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}

.filter-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.filter-tab {
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
 
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.filter-tab.active {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: white;
}

.filter-tab .count {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.2rem 0.5rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
}

.filter-tab.active .count {
    background: rgba(255, 255, 255, 0.3);
}

.documents-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
}

.document-card {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
}

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

.document-preview {
    width: 100%;
    height: 200px;
    overflow: hidden;
    position: relative;
}

.document-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.document-info {
    padding: 1rem;
}

.document-title {
    font-weight: 700;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
    line-height: 1.3;
    color: var(--text-primary);
}

.document-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.document-text-preview {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    font-weight: 400;
}

.document-actions {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    display: flex;
    gap: 0.25rem;
    opacity: 0;
    transition: var(--transition);
}

.document-card:hover .document-actions {
    opacity: 1;
}

.document-actions button {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: none;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
}

.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state h3 {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

/* Search Section */
.search-header {
    margin-bottom: 1.5rem;
}

.search-header h2 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
}

.advanced-search {
    background: var(--surface-color);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-bottom: 1.5rem;
}

.search-input-container {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.search-input-container input {
    flex: 1;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--surface-color);
    color: var(--text-primary);
    font-weight: 500;
}

.search-input-container input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(25, 118, 210, 0.15);
    background: var(--surface-color);
}

.search-filters {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.search-filters select {
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
   
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
}

.search-filters select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.search-results {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    min-height: 300px;
}

.search-result-item {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition);
}

.search-result-item:hover {
    background: var(--background-color);
}

.search-result-item:last-child {
    border-bottom: none;
}

.search-result-title {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.search-result-snippet {
    color: var(--text-secondary);
    line-height: 1.4;
    margin-bottom: 0.5rem;
}

.search-result-meta {
    font-size: 0.875rem;
    color: var(--text-secondary);
    display: flex;
    gap: 1rem;
}

.search-highlight {
    background: var(--warning-color);
    padding: 0.1rem 0.2rem;
    border-radius: 3px;
    font-weight: 600;
}

/* Settings Section */
.settings-header {
    margin-bottom: 1.5rem;
}

.settings-header h2 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
}

.settings-groups {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.settings-group {
    background: var(--surface-color);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.settings-group h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-size: 1.1rem;
}

.setting-item {
    margin-bottom: 1rem;
}

.setting-item:last-child {
    margin-bottom: 0;
}

.setting-item label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    font-weight: 500;
}

.setting-item input[type="checkbox"] {
    display: none;
}

.toggle {
    position: relative;
    width: 50px;
    height: 24px;
    background: var(--border-color);
    border-radius: 12px;
    transition: var(--transition);
}

.toggle::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background: white;
    border-radius: 50%;
    transition: var(--transition);
}

input[type="checkbox"]:checked + .toggle {
    background: var(--success-color);
}

input[type="checkbox"]:checked + .toggle::after {
    transform: translateX(26px);
}

.setting-item select {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
   
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 0.5rem;
}

.setting-item select:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* FAQ Section */
.faq-header {
    margin-bottom: 1.5rem;
}

.faq-header h2 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
}

.faq-container {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.faq-item {
    border-bottom: 1px solid var(--border-color);
}

.faq-item:last-child {
    border-bottom: none;
}

.faq-question {
    width: 100%;
    padding: 1.5rem;
    border: none;
    background: transparent;
    text-align: left;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.faq-question:hover {
    background: var(--background-color);
}

.faq-icon {
    font-size: 1.5rem;
    color: var(--primary-color);
    transition: var(--transition);
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 1.5rem 1.5rem;
    color: var(--text-secondary);
    line-height: 1.6;
    overflow: hidden;
    transition: var(--transition);
}

.faq-answer[hidden] {
    display: none;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: 1rem;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-hover);
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    margin: 0;
    color: var(--text-primary);
}

.modal-actions {
    display: flex;
    gap: 0.5rem;
}

.modal-body {
    padding: 1.5rem;
}

.document-preview img {
    width: 100%;
    max-height: 400px;
    object-fit: contain;
    border-radius: var(--border-radius);
    margin-bottom: 1.5rem;
}

.document-text h4 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.text-content {
    background: var(--background-color);
    padding: 1rem;
    border-radius: var(--border-radius);
    line-height: 1.6;
    white-space: pre-wrap;
    word-wrap: break-word;
    max-height: 300px;
    overflow-y: auto;
}

/* Bottom Navigation */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: var(--surface-color);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-around;
    align-items: center;
    z-index: 999;
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.1);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: var(--text-secondary);
    transition: var(--transition);
    padding: 0.5rem;
    border-radius: var(--border-radius);
    min-width: 60px;
    font-size: 0.75rem;
}

.nav-item i {
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
}

.nav-item.active {
    color: var(--primary-color);
    background: rgba(33, 150, 243, 0.1);
}

.nav-item:hover {
    color: var(--primary-color);
    background: rgba(33, 150, 243, 0.05);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: calc(var(--header-height) + 1rem);
    right: 1rem;
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toast {
    background: var(--surface-color);
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-hover);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-width: 300px;
    transform: translateX(100%);
    animation: slideIn 0.3s ease forwards;
}

.toast.success {
    border-left: 4px solid var(--success-color);
}

.toast.error {
    border-left: 4px solid var(--danger-color);
}

.toast.warning {
    border-left: 4px solid var(--warning-color);
}

.toast.info {
    border-left: 4px solid var(--primary-color);
}

@keyframes slideIn {
    to {
        transform: translateX(0);
    }
}

/* Footer */
footer {
    background: var(--surface-color);
    padding: 1rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
    border-top: 1px solid var(--border-color);
    margin-top: 2rem;
    margin-bottom: 6rem;
}

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

footer a:hover {
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 768px) {
    .app-main {
        padding: 0.75rem;
    }
    
    .scanner-container {
        padding: 1rem;
    }
    
    .camera-preview {
        max-width: 100%;
        min-height: 350px;
        aspect-ratio: 3/4;
    }
    
    .scan-frame {
        width: 90%;
        height: 80%;
        max-width: 300px;
    }
    
    .documents-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-container {
        min-width: auto;
    }
    
    .documents-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 1rem;
    }
    
    .scanner-controls {
        flex-direction: column;
    }
    
    .search-filters {
        flex-direction: column;
    }
    
    .modal-content {
        margin: 0.5rem;
        max-height: calc(100vh - 1rem);
    }
    
    .toast {
        min-width: auto;
        max-width: calc(100vw - 2rem);
    }
    
    .toast-container {
        right: 0.5rem;
        left: 0.5rem;
    }
}

@media (max-width: 480px) {
    .header-content h1 {
        font-size: 1rem;
    }
    
    .scanner-container {
        padding: 0.75rem;
    }
    
    .camera-preview {
        min-height: 300px;
        aspect-ratio: 3/4;
    }
    
    .scan-frame {
        width: 95%;
        height: 85%;
        max-width: 280px;
    }
    
    .scan-instructions {
        font-size: 0.875rem;
        padding: 0.5rem;
    }
    
    .documents-grid {
        grid-template-columns: 1fr;
    }
    
    .nav-item {
        font-size: 0.7rem;
        min-width: 50px;
    }
    
    .nav-item i {
        font-size: 1.1rem;
    }
    
    .filter-tabs {
        justify-content: center;
    }
    
    .filter-tab {
        flex: 1;
        min-width: 0;
        text-align: center;
    }
}

/* Orientação landscape em dispositivos móveis */
@media (max-width: 768px) and (orientation: landscape) {
    .camera-preview {
        max-width: 400px;
        min-height: 250px;
        aspect-ratio: 4/3;
    }
    
    .scan-frame {
        width: 80%;
        height: 70%;
        max-width: 320px;
    }
    
    .scanner-controls {
        flex-direction: row;
        gap: 0.75rem;
    }
    
    .scanner-controls .btn {
        min-width: 100px;
        padding: 0.75rem 1rem;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --background-color: #121212;
        --surface-color: #1e1e1e;
        --text-primary: #ffffff;
        --text-secondary: #b0b0b0;
        --border-color: #333333;
        --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
        --shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.4);
    }
    
    /* Melhorar legibilidade no modo escuro */
    .btn {
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
    }
    
    .btn:hover {
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
    }
    
    footer {
        background: #1a1a1a;
        border-top-color: #333333;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000000;
        --shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
    }
}

/* Focus styles for keyboard navigation */
button:focus-visible,
input:focus-visible,
select:focus-visible,
.nav-item:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 3px;
    border-radius: var(--border-radius);
}

/* Melhorar contraste para acessibilidade */
.btn-primary {
    background: var(--primary-color);
    color: white;
    font-weight: 600;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.btn-success {
    background: var(--success-color);
    color: white;
    font-weight: 600;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.btn-danger {
    background: var(--danger-color);
    color: white;
    font-weight: 600;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

/* Loading states */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--border-color);
    border-top: 2px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Error states */
.error {
    border-color: var(--danger-color) !important;
    background: rgba(244, 67, 54, 0.05);
}

.error-message {
    color: var(--danger-color);
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

/* Success states */
.success {
    border-color: var(--success-color) !important;
    background: rgba(76, 175, 80, 0.05);
}

/* Footer styles */
footer {
    background: var(--surface-color);
    padding: 1.5rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
    border-top: 1px solid var(--border-color);
    font-weight: 400;
    letter-spacing: 0.025em;
    position: relative;
    z-index: 10;
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.05);
}

footer a {
    color: var(--primary-color);
    text-decoration: none;
    transition: all 0.3s ease;
    font-weight: 500;
}

footer a:hover {
    color: var(--primary-color);
    text-decoration: underline;
    opacity: 0.8;
}

/* Footer style variations */
.footer-simple {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.footer-elegant {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.footer-elegant .footer-heart {
    font-size: 1.1rem;
    animation: heartbeat 2s ease-in-out infinite;
}

.footer-elegant .footer-separator {
    opacity: 0.6;
    font-weight: 300;
}

.footer-minimal {
    display: flex;
    align-items: center;
    justify-content: center;
}

.footer-minimal .footer-link {
    font-size: 0.8rem;
    opacity: 0.7;
    font-weight: 400;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.footer-minimal .footer-link:hover {
    opacity: 1;
    transform: translateY(-1px);
}

/* Heartbeat animation */
@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

/* Utility classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.hidden { display: none !important; }
.visible { display: block !important; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-1 { gap: 1rem; }
.gap-2 { gap: 2rem; }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.p-1 { padding: 1rem; }
.p-2 { padding: 2rem; }