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

:root {
    /* Theme Colors */
    --primary-color: #0fbab2;
    --secondary-color: #8252a1;
    --accent-color: #fdb913;
    --text-primary: #1a1a1a;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --background: #ffffff;
    --surface: #f8fafc;
    --surface-elevated: #ffffff;
    --border: #e5e7eb;
    --border-light: #f3f4f6;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    --gradient-accent: linear-gradient(135deg, var(--accent-color), #ff8c42);
    --glass-bg: rgba(255, 255, 255, 0.25);
    --glass-border: rgba(255, 255, 255, 0.18);
    --backdrop-blur: blur(16px);
    --border-radius: 12px;
    --border-radius-lg: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --animation-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

[data-theme="dark"] {
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-muted: #9ca3af;
    --background: #0f172a;
    --surface: #1e293b;
    --surface-elevated: #334155;
    --border: #374151;
    --border-light: #4b5563;
    --glass-bg: rgba(15, 23, 42, 0.25);
    --glass-border: rgba(255, 255, 255, 0.1);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

/* Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading-content {
    text-align: center;
    color: white;
}

.loading-logo {
    font-size: 4rem;
    margin-bottom: 1rem;
    animation: pulse 2s infinite;
}

.loading-text {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2rem;
    letter-spacing: -0.025em;
}

.loading-spinner {
    display: flex;
    justify-content: center;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top: 3px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

/* Main App */
.main-app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Navigation */
.navbar {
    background: var(--glass-bg);
    backdrop-filter: var(--backdrop-blur);
    border-bottom: 1px solid var(--glass-border);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.5rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.brand-icon {
    width: 36px;
    height: 36px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    box-shadow: var(--shadow-md);
}

.brand-text h1 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
}

.brand-text span {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-btn {
    width: 36px;
    height: 36px;
    border: none;
    background: var(--surface);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

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

.mobile-menu-btn {
    display: none;
}

/* Search Section */
.search-section {
    background: var(--surface);
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--border);
}

.search-container-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.search-content {
    text-align: center;
}

/* Search Wrapper */
.search-wrapper {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1rem;
}

.search-container {
    background: var(--surface-elevated);
    border: 1px solid var(--border);
    border-radius: var(--border-radius-lg);
    padding: 1.25rem;
    box-shadow: var(--shadow-md);
    max-width: 100%;
    overflow: hidden;
}

.search-input-group {
    position: relative;
    margin-bottom: 1rem;
}

.search-icon {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 1rem;
    z-index: 2;
}

.search-input {
    width: 100%;
    padding: 0.75rem 4.5rem 0.75rem 2.5rem;
    border: 2px solid var(--border);
    border-radius: var(--border-radius);
    font-size: 1rem;
    background: var(--surface-elevated);
    color: var(--text-primary);
    transition: var(--transition);
    outline: none;
}

.search-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(15, 186, 178, 0.1);
    transform: translateY(-2px);
}

.clear-btn, .voice-search-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 36px;
    height: 36px;
    border: none;
    background: var(--surface);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
    z-index: 3;
}

.clear-btn {
    right: 3.5rem;
}

.voice-search-btn {
    right: 0.75rem;
}

.clear-btn:hover, .voice-search-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-50%) scale(1.1);
}

/* Quick Filters */
.quick-filters {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 0.5rem;
}

/* Mobile Filter Toggle - hidden by default */
.mobile-filter-toggle {
    display: none;
}

.filter-group {
    display: flex;
    gap: 1rem;
    flex: 1;
    min-width: 0;
    align-items: center;
}

.filter-select {
    flex: 1;
    min-width: 140px;
    padding: 0.75rem 2.5rem 0.75rem 1rem;
    border: 2px solid var(--border);
    border-radius: var(--border-radius);
    background: var(--surface-elevated);
    color: var(--text-primary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition);
    outline: none;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23666' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6,9 12,15 18,9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 1rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    position: relative;
    z-index: 10;
}

.filter-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(15, 186, 178, 0.1);
}

.advanced-filter-btn {
    padding: 0.75rem 1.5rem;
    background: var(--secondary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
}

.advanced-filter-btn:hover {
    background: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Results Section */
.results-section {
    flex: 1;
    padding: 1.5rem 0;
    background: var(--surface);
}

.results-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.results-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.results-info h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.results-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.results-count {
    color: var(--text-secondary);
    font-weight: 500;
}

.view-options {
    display: flex;
    gap: 0.25rem;
    background: var(--surface-elevated);
    padding: 0.25rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border);
}

.view-btn {
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    border-radius: calc(var(--border-radius) - 2px);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
}

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

.view-btn:hover:not(.active) {
    background: var(--border-light);
}

.sort-select {
    padding: 0.75rem 2.5rem 0.75rem 1rem;
    border: 2px solid var(--border);
    border-radius: var(--border-radius);
    background: var(--surface-elevated);
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition);
    outline: none;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23666' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6,9 12,15 18,9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 1rem;
}

.sort-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(15, 186, 178, 0.1);
}

/* Dropdown Options Styling */
.filter-select option,
.sort-select option {
    padding: 0.5rem 1rem;
    background: var(--surface-elevated);
    color: var(--text-primary);
    border: none;
    font-size: 0.875rem;
}

.filter-select option:hover,
.sort-select option:hover {
    background: var(--primary-color);
    color: white;
}

.filter-select option:checked,
.sort-select option:checked {
    background: var(--primary-color);
    color: white;
    font-weight: 600;
}

/* Dark mode dropdown arrow */
[data-theme="dark"] .filter-select,
[data-theme="dark"] .sort-select {
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ccc' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6,9 12,15 18,9'%3e%3c/polyline%3e%3c/svg%3e");
}

/* Loading Animation */
.search-loading {
    text-align: center;
    padding: 2rem 0;
}

.loading-animation {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.pulse-ring {
    width: 12px;
    height: 12px;
    background: var(--primary-color);
    border-radius: 50%;
    animation: pulse-ring 1.5s ease-in-out infinite;
}

.pulse-ring:nth-child(2) {
    animation-delay: 0.2s;
}

.pulse-ring:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes pulse-ring {
    0%, 80%, 100% {
        transform: scale(0.8);
        opacity: 0.5;
    }
    40% {
        transform: scale(1.2);
        opacity: 1;
    }
}

/* No Results */
.no-results {
    text-align: center;
    padding: 2rem 0;
}

.no-results-icon {
    font-size: 4rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.no-results h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.no-results p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.clear-filters-btn {
    padding: 0.75rem 1.5rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

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

/* Results Grid */
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.results-grid.list-view {
    grid-template-columns: 1fr;
}

/* Drug Card */
.drug-card {
    background: var(--surface-elevated);
    border: 1px solid var(--border);
    border-radius: var(--border-radius-lg);
    padding: 1rem;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.drug-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.drug-card:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(15, 186, 178, 0.1);
}

.drug-header {
    margin-bottom: 0.25rem;
}

.drug-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.3;
}

.drug-category {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.25rem;
}

.category-label {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.category-value {
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--border-radius);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.drug-indications {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.indications-label {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.indications-content {
    color: var(--text-primary);
    line-height: 1.5;
    font-size: 0.875rem;
    white-space: pre-line;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
}

.drug-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: auto;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-light);
}

.view-details-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.875rem;
    width: 100%;
}

.view-details-btn:hover {
    background: var(--secondary-color);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.drug-meta {
    color: var(--text-muted);
    font-size: 0.75rem;
}

/* Load More */
.load-more-container {
    text-align: center;
    margin-top: 1.5rem;
}

.load-more-btn {
    padding: 1rem 2rem;
    background: var(--surface-elevated);
    color: var(--text-primary);
    border: 2px solid var(--border);
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

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

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal.active {
    display: flex;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal-content {
    background: var(--surface-elevated);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    position: relative;
    z-index: 1;
    animation: modalSlideIn 0.3s var(--animation-bounce);
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

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

.modal-title-section h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

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

.modal-close {
    width: 44px;
    height: 44px;
    border: none;
    background: var(--surface);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
    flex-shrink: 0;
}

.modal-close:hover {
    background: #ef4444;
    color: white;
    transform: scale(1.1);
}

.modal-body {
    padding: 1.5rem;
    max-height: 60vh;
    overflow-y: auto;
}

.detail-section {
    margin-bottom: 2rem;
}

.detail-section:last-child {
    margin-bottom: 0;
}

.detail-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.detail-title i {
    color: var(--primary-color);
}

.detail-content {
    color: var(--text-secondary);
    line-height: 1.6;
    padding-left: 1.5rem;
}

.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    padding-left: 1.5rem;
}

.detail-item {
    background: var(--surface);
    padding: 1rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border);
}

.detail-item-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.detail-item-value {
    color: var(--text-primary);
    font-weight: 500;
}

.modal-footer {
    padding: 1rem 1.5rem 1.5rem;
    border-top: 1px solid var(--border);
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

.modal-action-btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.modal-action-btn.secondary {
    background: var(--surface);
    color: var(--text-primary);
    border: 2px solid var(--border);
}

.modal-action-btn.secondary:hover {
    background: var(--border-light);
    transform: translateY(-1px);
}

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

.modal-action-btn.primary:hover {
    background: var(--secondary-color);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* Footer */
.footer {
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: 2rem 0 1.5rem;
    margin-top: auto;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.footer-section h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

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

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

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

/* Responsive Design */
@media (max-width: 1024px) {
    .filter-group {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .filter-select {
        min-width: 100%;
    }
    
    .advanced-filter-btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 1rem;
    }
    
    .brand-text h1 {
        font-size: 1.25rem;
    }
    
    .brand-text span {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .search-section {
        padding: 1rem 0;
    }
    
    .search-container-wrapper {
        padding: 0 1rem;
    }
    
    .search-container {
        padding: 1rem;
        margin: 0;
    }
    
    .search-wrapper {
        padding: 0 1rem;
    }
    
    /* Hide filter dropdowns on mobile for cleaner interface */
    .quick-filters {
        display: none;
    }
    
    /* Add a toggle button for filters on mobile */
    .mobile-filter-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 0.5rem;
        width: 100%;
        padding: 0.75rem;
        margin-top: 1rem;
        background: var(--surface-elevated);
        border: 2px solid var(--border);
        border-radius: var(--border-radius);
        color: var(--text-secondary);
        font-size: 0.875rem;
        font-weight: 500;
        cursor: pointer;
        transition: var(--transition);
    }
    
    .mobile-filter-toggle:hover {
        border-color: var(--primary-color);
        color: var(--primary-color);
    }
    
    .mobile-filter-toggle.active {
        background: var(--primary-color);
        border-color: var(--primary-color);
        color: white;
    }
    
    /* Show filters when toggled */
    .quick-filters.mobile-visible {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        margin-top: 0.75rem;
        padding-top: 0.75rem;
        border-top: 1px solid var(--border);
    }
    
    .quick-filters.mobile-visible .filter-group {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .quick-filters.mobile-visible .filter-select {
        padding: 0.875rem 2.5rem 0.875rem 1rem;
        font-size: 1rem;
    }
    
    .quick-filters.mobile-visible .advanced-filter-btn {
        justify-content: center;
        margin-top: 0.5rem;
    }
    
    .results-container {
        padding: 0 1rem;
    }
    
    .results-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .modal-content {
        margin: 1rem;
        max-height: calc(100vh - 2rem);
    }
    
    .modal-header {
        padding: 1rem 1rem 0.75rem;
    }

    .modal-body {
        padding: 1rem;
        max-height: calc(100vh - 180px);
    }

    .modal-footer {
        padding: 0.75rem 1rem 1rem;
        flex-direction: column;
    }
    
    .detail-grid {
        grid-template-columns: 1fr;
        padding-left: 0;
    }
    
    .detail-content {
        padding-left: 0;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

@media (max-width: 480px) {
    
    .search-input {
        font-size: 1rem;
        padding: 0.875rem 4.5rem 0.875rem 2.5rem;
    }
    
    .search-icon {
        left: 0.75rem;
        font-size: 1rem;
    }
    
    .clear-btn, .voice-search-btn {
        width: 32px;
        height: 32px;
    }
    
    .clear-btn {
        right: 3.5rem;
    }
    
    .voice-search-btn {
        right: 0.75rem;
    }
    
    .drug-card {
        padding: 1rem;
    }
    
    .modal-title-section h2 {
        font-size: 1.25rem;
    }
}

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

/* Focus styles for keyboard navigation */
.search-input:focus,
.filter-select:focus,
.sort-select:focus,
.nav-btn:focus,
.view-btn:focus,
.drug-card:focus,
.modal-close:focus,
.modal-action-btn:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border: #000000;
        --text-secondary: #000000;
    }
    
    [data-theme="dark"] {
        --border: #ffffff;
        --text-secondary: #ffffff;
    }
}

/* Print styles */
@media print {
    .navbar,
    .search-section,
    .results-header,
    .modal-footer,
    .footer {
        display: none;
    }
    
    .modal-content {
        box-shadow: none;
        border: 1px solid #000;
    }
    
    .drug-card {
        break-inside: avoid;
        border: 1px solid #000;
        margin-bottom: 1rem;
    }
}