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

:root {
    --primary-color: #2196F3;
    --secondary-color: #4CAF50;
    --warning-color: #FFC107;
    --danger-color: #F44336;
    --purple-color: #9C27B0;
    --background-color: #f5f5f5;
    --surface-color: #ffffff;
    --text-primary: #212121;
    --text-secondary: #757575;
    --border-color: #e0e0e0;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.15);
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--background-color);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Header */
.app-header {
    background: var(--surface-color);
    box-shadow: var(--shadow);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: 60px;
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    height: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

.header-content h1 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary-color);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.language-toggle {
    background: none;
    border: 1px solid var(--border-color);
    padding: 8px 12px;
    border-radius: 20px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
    font-weight: 500;
}

.language-toggle i {
    font-size: 1rem;
    transition: var(--transition);
}

.language-toggle:hover i {
    transform: rotate(180deg);
}

.language-toggle:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: var(--shadow-hover);
}

.language-toggle:active {
    transform: translateY(0);
    box-shadow: var(--shadow);
}

/* Main Content */
.app-main {
    margin-top: 60px;
    margin-bottom: 120px; /* Increased to make room for footer */
    padding: 20px;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    min-height: calc(100vh - 180px); /* Ensure minimum height for content */
}

/* Sections */
.app-section {
    display: none;
    animation: fadeIn 0.3s ease;
}

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

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

/* Welcome Card */
.welcome-card {
    background: var(--surface-color);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
    margin-bottom: 20px;
}

.welcome-card h2 {
    font-size: 1.8rem;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.welcome-card p {
    color: var(--text-secondary);
    margin-bottom: 30px;
    font-size: 1.1rem;
}

/* Quick Actions */
.quick-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 20px;
}

.quick-actions button {
    min-width: 150px;
    transition: var(--transition);
}

.quick-actions button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

/* Buttons */
.btn-primary, .btn-secondary, .btn-danger {
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    justify-content: center;
    min-width: 120px;
}

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

.btn-primary:hover {
    background: #1976D2;
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.btn-primary:active, .btn-secondary:active, .btn-danger:active {
    transform: translateY(0);
    box-shadow: var(--shadow);
}

.btn-primary:focus, .btn-secondary:focus, .btn-danger:focus {
    outline: none;
    box-shadow: 0 0 0 2px rgba(33, 150, 243, 0.3);
}

.btn-secondary {
    background: var(--surface-color);
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

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

.btn-danger:hover {
    background: #D32F2F;
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--surface-color);
    padding: 25px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

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

.stat-card i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 10px;
    transition: var(--transition);
}

.stat-card:hover i {
    transform: scale(1.1);
}

.stat-card h3 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 5px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.stat-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Section Header */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 15px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--border-color);
}

.section-header h2 {
    font-size: 1.5rem;
    color: var(--text-primary);
    font-weight: 600;
}

.section-header h2::before {
    content: '';
    display: inline-block;
    width: 4px;
    height: 20px;
    background: var(--primary-color);
    margin-right: 10px;
    border-radius: 2px;
    vertical-align: middle;
}

/* Cards Grid */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.business-card {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
    position: relative;
}

.business-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.business-card .card-header {
    transition: var(--transition);
}

.business-card:hover .card-header {
    filter: brightness(1.1);
}

.card-header {
    padding: 20px;
    background: linear-gradient(135deg, var(--primary-color), #1976D2);
    color: white;
}

.card-header h3 {
    font-size: 1.3rem;
    margin-bottom: 5px;
    font-weight: 600;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.card-header p {
    opacity: 0.9;
    font-size: 0.9rem;
    font-weight: 500;
    text-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}

.card-body {
    padding: 20px;
}

.card-info {
    margin-bottom: 15px;
}

.card-info p {
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    transition: var(--transition);
}

.card-info p:hover {
    color: var(--primary-color);
    transform: translateX(2px);
}

.card-info i {
    width: 16px;
    color: var(--primary-color);
    transition: var(--transition);
}

.card-info p:hover i {
    transform: scale(1.1);
}

.card-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 15px;
}

.card-actions button {
    flex: 1;
    min-width: 100px;
    padding: 8px 12px;
    font-size: 0.9rem;
    transition: var(--transition);
}

.card-actions button:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-hover);
}

/* Contacts List */
.contacts-list {
    display: grid;
    gap: 15px;
}

.contact-item {
    background: var(--surface-color);
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
    transition: var(--transition);
}

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

.contact-info h4 {
    margin-bottom: 5px;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.1rem;
}

.contact-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.4;
}

.contact-actions {
    display: flex;
    gap: 10px;
}

.contact-actions button {
    padding: 6px 12px;
    font-size: 0.8rem;
    transition: var(--transition);
}

.contact-actions button:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-hover);
}

.follow-up-indicator {
    margin-top: 8px;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 5px;
}

.follow-up-indicator i {
    font-size: 0.9rem;
}

/* Analytics */
.analytics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.analytics-card {
    background: var(--surface-color);
    padding: 25px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.analytics-card h3 {
    margin-bottom: 20px;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.2rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

#viewsChart {
    width: 100%;
    height: auto;
    max-width: 400px;
}

.interaction-item {
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.interaction-item:hover {
    background-color: var(--background-color);
    margin: 0 -10px;
    padding: 10px;
    border-radius: 8px;
}

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

.interaction-info h5 {
    margin-bottom: 3px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

.interaction-info p {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.interaction-time {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
    font-style: italic;
}

/* Settings */
.settings-grid {
    display: grid;
    gap: 20px;
}

.setting-item {
    background: var(--surface-color);
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.setting-item:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-hover);
}

.setting-item label {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: var(--transition);
}

.setting-item label:hover {
    color: var(--primary-color);
}

.setting-item input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: var(--primary-color);
    cursor: pointer;
    transition: var(--transition);
}

.setting-item input[type="checkbox"]:hover {
    transform: scale(1.1);
}

/* FAQ Section */
.faq-section {
    margin: 40px 0;
}

.faq-section h2 {
    text-align: center;
    margin-bottom: 30px;
    color: var(--text-primary);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--surface-color);
    margin-bottom: 10px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 20px;
    background: none;
    border: none;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    transition: var(--transition);
}

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

.faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
    background-color: var(--background-color);
}

.faq-answer.show {
    padding: 20px;
    max-height: 200px;
    background-color: var(--background-color);
}

.faq-question[aria-expanded="true"] {
    background: var(--primary-color);
    color: white;
}

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

.faq-icon {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}



.faq-answer p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    animation: fadeIn 0.3s ease;
    backdrop-filter: blur(5px);
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp 0.3s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
}

@keyframes slideUp {
    from { transform: translateY(50px) scale(0.95); opacity: 0; }
    to { transform: translateY(0) scale(1); opacity: 1; }
}

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

.modal-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--background-color);
    border-radius: var(--border-radius) var(--border-radius) 0 0;
}

.modal-header h3 {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.2rem;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 5px;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    font-weight: bold;
}

.modal-close:hover {
    background: var(--background-color);
    color: var(--text-primary);
    transform: scale(1.1);
    box-shadow: var(--shadow);
}

.modal-close:active {
    transform: scale(0.95);
}

.modal-close:focus {
    outline: none;
    box-shadow: 0 0 0 2px rgba(33, 150, 243, 0.3);
}

/* Forms */
.card-form {
    padding: 20px;
    background-color: var(--surface-color);
    border-radius: var(--border-radius);
    margin: 0;
}

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

.form-group:last-child {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input, .form-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
    background-color: var(--surface-color);
    font-family: inherit;
}

.form-group input:hover, .form-group select:hover, .form-group textarea:hover {
    border-color: var(--primary-color);
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(33, 150, 243, 0.2);
    transform: translateY(-1px);
}

.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    resize: vertical;
    min-height: 80px;
    transition: var(--transition);
    background-color: var(--surface-color);
}

.form-actions {
    display: flex;
    gap: 15px;
    justify-content: flex-end;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

/* QR Modal */
.qr-container {
    padding: 20px;
    text-align: center;
    background-color: var(--surface-color);
}

#qrCanvas {
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: white;
    box-shadow: var(--shadow);
}

.share-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

/* Bottom Navigation */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--surface-color);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-around;
    padding: 8px 0;
    z-index: 100;
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 8px 12px;
    text-decoration: none;
    color: var(--text-secondary);
    transition: var(--transition);
    border-radius: 8px;
    min-width: 60px;
}

.nav-item:hover, .nav-item.active {
    color: var(--primary-color);
    background: rgba(33, 150, 243, 0.1);
    transform: translateY(-1px);
}

.nav-item i {
    font-size: 1.2rem;
    margin-bottom: 4px;
    transition: var(--transition);
}

.nav-item:hover i, .nav-item.active i {
    transform: scale(1.1);
}

.nav-item span {
    font-size: 0.7rem;
    font-weight: 500;
}

/* Footer */
footer {
    background: var(--surface-color);
    padding: 20px;
    text-align: center;
    border-top: 1px solid var(--border-color);
    margin-top: 40px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    position: relative;
    z-index: 50;
    margin-bottom: 80px; /* Space for bottom navigation */
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.1);
}

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

footer a:hover {
    text-decoration: underline;
    color: #1976D2;
}

/* Responsive Design */
@media (max-width: 768px) {
    .app-main {
        padding: 15px;
        margin-bottom: 140px; /* More space for footer on mobile */
    }
    
    .modal-content {
        margin: 10px;
        max-width: calc(100vw - 20px);
    }
    
    .welcome-card {
        padding: 20px;
    }
    
    .welcome-card h2 {
        font-size: 1.5rem;
    }
    
    .quick-actions {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }
    
    .quick-actions button {
        width: 100%;
        max-width: 250px;
        min-width: auto;
    }
    
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
        gap: 15px;
    }
    
    .stat-card {
        padding: 20px 15px;
    }
    
    .stat-card h3 {
        font-size: 1.5rem;
    }
    
    .stat-card i {
        font-size: 1.5rem;
    }
    
    .cards-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .section-header {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }
    
    .contact-item {
        flex-direction: column;
        align-items: stretch;
        text-align: center;
        gap: 10px;
    }
    
    .contact-actions {
        justify-content: center;
        gap: 8px;
    }
    
    .analytics-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .form-actions {
        flex-direction: column;
        gap: 10px;
    }
    
    .share-actions {
        flex-direction: column;
        gap: 10px;
    }
    
    .nav-item span {
        font-size: 0.65rem;
    }
    
    .card-actions {
        gap: 8px;
    }
    
    .card-actions button {
        min-width: 80px;
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .header-content {
        padding: 0 15px;
    }
    
    .modal-content {
        margin: 5px;
        max-width: calc(100vw - 10px);
    }
    
    .header-content h1 {
        font-size: 1.1rem;
    }
    
    .app-main {
        padding: 10px;
    }
    
    .welcome-card {
        padding: 15px;
    }
    
    .welcome-card h2 {
        font-size: 1.3rem;
    }
    
    .welcome-card p {
        font-size: 1rem;
    }
    
    .stat-card {
        padding: 15px;
    }
    
    .stat-card h3 {
        font-size: 1.3rem;
    }
    
    .stat-card i {
        font-size: 1.3rem;
    }
    
    .modal-content {
        margin: 10px;
    }
    
    .card-form {
        padding: 15px;
    }
    
    .form-group {
        margin-bottom: 15px;
    }
    
    .form-group label {
        font-size: 0.8rem;
    }
    
    .qr-container {
        padding: 15px;
    }
    
    .bottom-nav {
        padding: 6px 0;
    }
    
    .bottom-nav .nav-item {
        padding: 4px 6px;
        min-width: 45px;
    }
    
    .nav-item {
        padding: 6px 8px;
        min-width: 50px;
        gap: 2px;
    }
    
    .nav-item i {
        font-size: 1rem;
        margin-bottom: 2px;
    }
    
    .nav-item span {
        font-size: 0.6rem;
        line-height: 1;
    }
    
    .quick-actions button {
        min-width: 120px;
        padding: 10px 16px;
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* Empty state styles */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 15px;
    opacity: 0.5;
    color: var(--primary-color);
}

.empty-state h3 {
    margin-bottom: 10px;
    color: var(--text-primary);
    font-size: 1.2rem;
}

.empty-state p {
    font-size: 0.9rem;
    line-height: 1.5;
    max-width: 300px;
    margin: 0 auto;
}

/* Empty state in cards context */
.business-card.empty-state {
    background: var(--surface-color);
    border: 2px dashed var(--border-color);
    box-shadow: none;
}

.business-card.empty-state:hover {
    transform: none;
    box-shadow: none;
    border-color: var(--primary-color);
}

/* Empty state in contacts context */
.contact-item.empty-state {
    background: var(--surface-color);
    border: 2px dashed var(--border-color);
    box-shadow: none;
    justify-content: center;
}

.contact-item.empty-state:hover {
    transform: none;
    box-shadow: none;
    border-color: var(--primary-color);
}

.mb-10 { margin-bottom: 10px; }
.mb-15 { margin-bottom: 15px; }
.mb-20 { margin-bottom: 20px; }
.mb-30 { margin-bottom: 30px; }

.mt-10 { margin-top: 10px; }
.mt-15 { margin-top: 15px; }
.mt-20 { margin-top: 20px; }
.mt-30 { margin-top: 30px; }

.hidden { display: none !important; }
.visible { display: block !important; }

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

/* Chart empty state */
#viewsChart {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--surface-color);
}

.spinner {
    border: 2px solid var(--border-color);
    border-top: 2px solid var(--primary-color);
    border-radius: 50%;
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
    display: inline-block;
    margin-right: 8px;
}

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

/* Success/Error Messages */
.message {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    font-weight: 500;
}

.message.success {
    background: rgba(76, 175, 80, 0.1);
    color: #2E7D32;
    border: 1px solid rgba(76, 175, 80, 0.3);
}

.message.error {
    background: rgba(244, 67, 54, 0.1);
    color: #C62828;
    border: 1px solid rgba(244, 67, 54, 0.3);
}

.message.warning {
    background: rgba(255, 193, 7, 0.1);
    color: #F57C00;
    border: 1px solid rgba(255, 193, 7, 0.3);
}