/* CSS Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

:root {
    --color-slate-50: #f8fafc;
    --color-slate-100: #f1f5f9;
    --color-slate-200: #e2e8f0;
    --color-slate-400: #94a3b8;
    --color-slate-500: #64748b;
    --color-slate-600: #475569;
    --color-slate-700: #334155;
    --color-slate-800: #1e293b;
    --color-blue-50: #eff6ff;
    --color-blue-100: #dbeafe;
    --color-blue-500: #3b82f6;
    --color-blue-600: #2563eb;
    --color-green-50: #f0fdf4;
    --color-green-200: #bbf7d0;
    --color-green-500: #22c55e;
    --color-green-600: #16a34a;
    --color-green-700: #15803d;
    --color-emerald-50: #ecfdf5;
    --font-serif: 'Fraunces', serif;
    --font-sans: 'Inter', sans-serif;
}

body {
    font-family: var(--font-sans);
    background: linear-gradient(135deg, var(--color-slate-50) 0%, var(--color-blue-50) 50%, var(--color-slate-100) 100%);
    min-height: 100vh;
    color: var(--color-slate-700);
}

/* Background Pattern */
.background-pattern {
    position: fixed;
    inset: 0;
    opacity: 0.015;
    pointer-events: none;
    background-image: 
        radial-gradient(circle at 25% 25%, #3b82f6 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, #8b5cf6 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, #06b6d4 0%, transparent 50%);
}

.container {
    position: relative;
    z-index: 10;
}

/* Header */
.header {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(40px);
    -webkit-backdrop-filter: blur(40px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.5);
    position: sticky;
    top: 0;
    z-index: 50;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
}

.header-content {
    max-width: 1280px;
    margin: 0 auto;
    padding: 1.5rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-width: 0;
}

.logo-icon {
    background: linear-gradient(135deg, var(--color-blue-500), var(--color-blue-600));
    padding: 0.75rem;
    border-radius: 1rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    color: white;
    transition: transform 0.3s ease;
}

.logo-icon:hover {
    transform: scale(1.05);
}

.site-title {
    font-family: var(--font-serif);
    font-size: 1.875rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-slate-800), var(--color-slate-600));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.site-subtitle {
    font-size: 0.875rem;
    color: var(--color-slate-500);
    margin-top: 0.125rem;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.header-badge {
    display: none;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--color-slate-600);
    background: var(--color-blue-50);
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    border: 1px solid var(--color-blue-100);
}

.header-badge svg {
    color: var(--color-blue-500);
}

@media (min-width: 768px) {
    .header-badge {
        display: flex;
    }
    
    .header-content {
        padding: 1.5rem 1.5rem;
    }
}

@media (min-width: 1024px) {
    .header-content {
        padding: 1.5rem 2rem;
    }
}

/* Main Content */
.main-content {
    max-width: 1280px;
    margin: 0 auto;
    padding: 3rem 1rem;
}

@media (min-width: 640px) {
    .main-content {
        padding: 3rem 1.5rem;
    }
}

@media (min-width: 1024px) {
    .main-content {
        padding: 3rem 2rem;
    }
}

/* Hero Section */
.hero {
    text-align: center;
    margin-bottom: 3rem;
    animation: fade-in 0.6s ease-out forwards;
}

.hero-title {
    font-family: var(--font-serif);
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-slate-800);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-gradient {
    display: block;
    background: linear-gradient(135deg, var(--color-blue-600), #9333ea, #ec4899);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-top: 0.5rem;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--color-slate-600);
    max-width: 48rem;
    margin: 0 auto;
    line-height: 1.75;
}

.hero-subtext {
    display: block;
    margin-top: 0.5rem;
    font-size: 1rem;
    color: var(--color-slate-500);
}

@media (max-width: 640px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-description {
        font-size: 1.125rem;
    }
}

/* Info Cards */
.info-cards {
    display: grid;
    gap: 1.5rem;
    margin-bottom: 3rem;
    animation: slide-up 0.8s ease-out 0.4s forwards;
    opacity: 0;
}

@media (min-width: 768px) {
    .info-cards {
        grid-template-columns: repeat(3, 1fr);
    }
}

.info-card {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: 1rem;
    padding: 1.5rem;
    border: 1px solid var(--color-slate-200);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.info-card:hover {
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    transform: translateY(-4px);
}

.info-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    color: white;
}

.info-icon-green {
    background: linear-gradient(135deg, var(--color-green-500), var(--color-green-600));
}

.info-icon-blue {
    background: linear-gradient(135deg, var(--color-blue-500), var(--color-blue-600));
}

.info-icon-purple {
    background: linear-gradient(135deg, #a855f7, #9333ea);
}

.info-title {
    font-family: var(--font-serif);
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-slate-800);
    margin-bottom: 0.5rem;
}

.info-description {
    color: var(--color-slate-600);
    font-size: 0.875rem;
    line-height: 1.5;
}

/* Filter & Sort Toolbar */
.filter-sort-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 2rem;
    animation: slide-up 0.8s ease-out 0.6s forwards;
    opacity: 0;
}

.filter-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.filter-btn {
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    font-size: 0.8125rem;
    font-weight: 600;
    font-family: var(--font-sans);
    border: 1px solid var(--color-slate-200);
    background: rgba(255, 255, 255, 0.8);
    color: var(--color-slate-600);
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.filter-btn:hover {
    background: var(--color-slate-100);
    border-color: var(--color-slate-400);
}

.filter-btn.active {
    background: linear-gradient(135deg, var(--color-blue-500), var(--color-blue-600));
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.sort-control {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

.sort-label {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-slate-500);
    white-space: nowrap;
}

.sort-select {
    padding: 0.5rem 2rem 0.5rem 0.75rem;
    border-radius: 0.75rem;
    font-size: 0.8125rem;
    font-weight: 600;
    font-family: var(--font-sans);
    border: 1px solid var(--color-slate-200);
    background: rgba(255, 255, 255, 0.8);
    color: var(--color-slate-700);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.5rem center;
    transition: all 0.2s ease;
}

.sort-select:hover {
    border-color: var(--color-slate-400);
}

.sort-select:focus {
    outline: 2px solid var(--color-blue-500);
    outline-offset: 2px;
}

/* Drug Cards */
.drug-cards {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.drug-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: 1rem;
    border: 1px solid var(--color-slate-200);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: all 0.3s ease;
    animation: slide-up 0.8s ease-out forwards;
    opacity: 0;
    display: flex;
    flex-direction: column;
}

.drug-card:hover {
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
    transform: translateY(-4px);
}

@media (min-width: 768px) {
    .drug-card {
        flex-direction: row;
    }
}

.drug-card-accent {
    width: 100%;
    height: 0.5rem;
    transition: all 0.3s ease;
}

@media (min-width: 768px) {
    .drug-card-accent {
        width: 0.5rem;
        height: auto;
    }
    
    .drug-card:hover .drug-card-accent {
        width: 0.75rem;
    }
}

.drug-card-content {
    flex: 1;
    padding: 1.5rem;
}

@media (min-width: 768px) {
    .drug-card-content {
        padding: 2rem;
    }
}

.drug-card-inner {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* savings program within a drug card */
.savings-program {
    padding: 0.75rem 0;
}

.savings-program + .savings-program {
    border-top: 1px solid var(--color-green-200);
}

.savings-program-description {
    font-size: 0.875rem;
    color: var(--color-slate-700);
    line-height: 1.5;
}

.eligibility-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
    margin-top: 0.5rem;
}

.eligibility-tag {
    font-size: 0.6875rem;
    font-weight: 600;
    padding: 0.2rem 0.5rem;
    border-radius: 9999px;
    letter-spacing: 0.02em;
}

.tag-private {
    background: var(--color-blue-50);
    color: var(--color-blue-600);
    border: 1px solid var(--color-blue-100);
}

.tag-government {
    background: #faf5ff;
    color: #7c3aed;
    border: 1px solid #ede9fe;
}

.tag-cash {
    background: var(--color-green-50);
    color: var(--color-green-600);
    border: 1px solid var(--color-green-200);
}

.eligibility-criteria {
    margin-top: 0.5rem;
}

.criteria-list {
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 0.75rem;
    color: var(--color-gray-600);
    line-height: 1.6;
}

.criteria-list li {
    padding: 0.125rem 0;
    padding-left: 1rem;
    position: relative;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    cursor: default;
}

.criteria-list li::before {
    content: "\2022";
    position: absolute;
    left: 0.25rem;
    color: var(--color-gray-400);
}

.criteria-more {
    margin-top: 0.25rem;
}

.criteria-more summary {
    font-size: 0.75rem;
    color: var(--color-blue-600);
    cursor: pointer;
    padding: 0.125rem 0;
    list-style: none;
    user-select: none;
}

.criteria-more summary::-webkit-details-marker {
    display: none;
}

.criteria-more summary:hover {
    text-decoration: underline;
}

.criteria-more[open] summary {
    margin-bottom: 0.125rem;
}

.criteria-more .criteria-list li {
    white-space: normal;
}

.savings-program-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.75rem;
}

.drug-fda-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.drug-info {
    flex: 1;
}

.drug-header {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
}

.drug-icon {
    padding: 0.75rem;
    border-radius: 0.75rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    color: white;
    flex-shrink: 0;
}

.drug-icon svg {
    width: 1.5rem;
    height: 1.5rem;
}

.drug-name {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-slate-800);
}

.drug-subtitle {
    color: var(--color-slate-600);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.drug-details {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 1rem;
}

.drug-detail {
    background: var(--color-slate-50);
    border-radius: 0.75rem;
    padding: 0.75rem;
}

.drug-detail-label {
    font-size: 0.75rem;
    color: var(--color-slate-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.drug-detail-value {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-slate-700);
}

.drug-savings {
    background: linear-gradient(135deg, var(--color-green-50), var(--color-emerald-50));
    border-radius: 0.75rem;
    padding: 1rem;
    border: 1px solid var(--color-green-200);
}

.drug-savings-label {
    font-size: 0.75rem;
    color: var(--color-green-700);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.drug-savings-programs {
    font-size: 0.875rem;
    color: var(--color-slate-700);
    line-height: 1.5;
}

.drug-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    min-width: 240px;
}

.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 0.75rem;
    font-weight: 600;
    font-size: 0.875rem;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
    font-family: var(--font-sans);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-blue-500), var(--color-blue-600));
    color: white;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.btn-primary:hover {
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    transform: scale(1.05);
}

.btn-primary svg {
    transition: transform 0.2s ease;
}

.btn-primary:hover svg {
    transform: translate(2px, -2px);
}

.btn-secondary {
    background: white;
    color: var(--color-slate-700);
    border: 2px solid var(--color-slate-200);
}

.btn-secondary:hover {
    background: var(--color-slate-50);
    border-color: var(--color-slate-300);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

/* No Results */
.no-results {
    text-align: center;
    padding: 4rem 1rem;
    animation: fade-in 0.6s ease-out forwards;
}

.no-results-icon {
    background: var(--color-slate-100);
    width: 5rem;
    height: 5rem;
    border-radius: 9999px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    color: var(--color-slate-400);
}

.no-results-title {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-slate-700);
    margin-bottom: 0.5rem;
}

.no-results-description {
    color: var(--color-slate-500);
}

/* Important Information */
.important-info {
    margin-top: 4rem;
    background: linear-gradient(135deg, var(--color-blue-50), #eef2ff);
    border-radius: 1rem;
    padding: 2rem;
    border: 1px solid var(--color-blue-200);
}

.important-info-title {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-slate-800);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.important-info-title svg {
    color: var(--color-blue-600);
}

.important-info-content {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    color: var(--color-slate-700);
}

.important-info-item {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
}

.important-info-item .bullet {
    color: var(--color-blue-600);
    font-weight: 700;
    margin-top: 0.125rem;
    flex-shrink: 0;
}

.important-info-warning {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-blue-200);
    font-size: 0.875rem;
}

.important-info-warning .bullet {
    color: #d97706;
}

/* Footer */
.footer {
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-top: 1px solid var(--color-slate-200);
    margin-top: 4rem;
}

.footer-text {
    max-width: 1280px;
    margin: 0 auto;
    padding: 2rem 1rem;
    text-align: center;
    color: var(--color-slate-500);
    font-size: 0.875rem;
}

/* Animations */
@keyframes fade-in {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slide-up {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Utility Classes */
.gradient-blue { background: linear-gradient(135deg, #3b82f6, #2563eb); }
.gradient-indigo { background: linear-gradient(135deg, #6366f1, #4f46e5); }
.gradient-purple { background: linear-gradient(135deg, #a855f7, #9333ea); }
.gradient-pink { background: linear-gradient(135deg, #ec4899, #db2777); }
.gradient-teal { background: linear-gradient(135deg, #14b8a6, #0d9488); }
.gradient-emerald { background: linear-gradient(135deg, #10b981, #059669); }
.gradient-orange { background: linear-gradient(135deg, #f97316, #ea580c); }
.gradient-amber { background: linear-gradient(135deg, #f59e0b, #d97706); }
.gradient-cyan { background: linear-gradient(135deg, #06b6d4, #0891b2); }
.gradient-sky { background: linear-gradient(135deg, #0ea5e9, #0284c7); }

/* Additional Gradient Color Options */
.gradient-red      { background: linear-gradient(135deg, #ef4444, #b91c1c); }
.gradient-yellow   { background: linear-gradient(135deg, #fde68a, #f59e0b); }
.gradient-lime     { background: linear-gradient(135deg, #a3e635, #65a30d); }
.gradient-fuchsia  { background: linear-gradient(135deg, #d946ef, #a21caf); }
.gradient-gray     { background: linear-gradient(135deg, #e5e7eb, #6b7280); }
.gradient-stone    { background: linear-gradient(135deg, #d6d3d1, #78716c); }
.gradient-violet   { background: linear-gradient(135deg, #8b5cf6, #7c3aed); }
.gradient-green    { background: linear-gradient(135deg, #22c55e, #15803d); }
.gradient-rose     { background: linear-gradient(135deg, #f43f5e, #be123c); }

/* Dark Mode Toggle */
.theme-toggle {
    background: var(--color-slate-100);
    border: 1px solid var(--color-slate-200);
    border-radius: 9999px;
    padding: 0.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    color: var(--color-slate-600);
}

.theme-toggle:hover {
    background: var(--color-slate-200);
    transform: scale(1.05);
}

.theme-toggle svg {
    width: 1.25rem;
    height: 1.25rem;
    transition: transform 0.3s ease;
}

.theme-toggle:hover svg {
    transform: rotate(15deg);
}

.theme-toggle .icon-sun {
    display: none;
}

.theme-toggle .icon-moon {
    display: block;
}

/* Tertiary button style */
.btn-tertiary {
    background: transparent;
    color: var(--color-slate-500);
    border: 1px solid var(--color-slate-200);
    font-size: 0.75rem;
    padding: 0.5rem 1rem;
}

.btn-tertiary:hover {
    background: var(--color-slate-50);
    color: var(--color-slate-700);
    border-color: var(--color-slate-300);
}

/* Dark Mode Styles */
[data-theme="dark"] {
    --color-slate-50: #0f172a;
    --color-slate-100: #1e293b;
    --color-slate-200: #334155;
    --color-slate-400: #94a3b8;
    --color-slate-500: #94a3b8;
    --color-slate-600: #cbd5e1;
    --color-slate-700: #e2e8f0;
    --color-slate-800: #f1f5f9;
    --color-blue-50: #1e293b;
    --color-blue-100: #1e3a5f;
    --color-blue-200: #1e40af;
    --color-green-50: #14532d;
    --color-green-200: #166534;
    --color-green-700: #86efac;
    --color-emerald-50: #14532d;
}

[data-theme="dark"] body {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
}

[data-theme="dark"] .background-pattern {
    opacity: 0.03;
}

[data-theme="dark"] .header {
    background: rgba(15, 23, 42, 0.9);
    border-bottom-color: rgba(51, 65, 85, 0.5);
}

[data-theme="dark"] .info-card {
    background: rgba(30, 41, 59, 0.8);
    border-color: var(--color-slate-200);
}

[data-theme="dark"] .filter-btn {
    background: rgba(30, 41, 59, 0.8);
    border-color: var(--color-slate-200);
    color: var(--color-slate-600);
}

[data-theme="dark"] .filter-btn:hover {
    background: rgba(51, 65, 85, 0.8);
    border-color: var(--color-slate-400);
}

[data-theme="dark"] .filter-btn.active {
    background: linear-gradient(135deg, var(--color-blue-500), var(--color-blue-600));
    color: white;
    border-color: transparent;
}

[data-theme="dark"] .sort-select {
    background-color: rgba(30, 41, 59, 0.8);
    border-color: var(--color-slate-200);
    color: var(--color-slate-700);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
}

[data-theme="dark"] .sort-select:hover {
    border-color: var(--color-slate-400);
}

[data-theme="dark"] .drug-card {
    background: rgba(30, 41, 59, 0.9);
    border-color: var(--color-slate-200);
}

[data-theme="dark"] .drug-detail {
    background: rgba(15, 23, 42, 0.6);
}

[data-theme="dark"] .drug-savings {
    background: linear-gradient(135deg, rgba(20, 83, 45, 0.4), rgba(20, 83, 45, 0.3));
    border-color: #166534;
}

[data-theme="dark"] .drug-savings-label {
    color: #86efac;
}

[data-theme="dark"] .btn-secondary {
    background: rgba(30, 41, 59, 0.8);
    color: var(--color-slate-700);
    border-color: var(--color-slate-200);
}

[data-theme="dark"] .btn-secondary:hover {
    background: rgba(51, 65, 85, 0.8);
    border-color: var(--color-slate-400);
}

[data-theme="dark"] .btn-tertiary {
    color: var(--color-slate-500);
    border-color: var(--color-slate-200);
}

[data-theme="dark"] .btn-tertiary:hover {
    background: rgba(51, 65, 85, 0.5);
    color: var(--color-slate-700);
}

[data-theme="dark"] .important-info {
    background: linear-gradient(135deg, rgba(30, 58, 95, 0.5), rgba(49, 46, 129, 0.3));
    border-color: #3b82f6;
}

[data-theme="dark"] .important-info-title svg {
    color: #60a5fa;
}

[data-theme="dark"] .important-info-item .bullet {
    color: #60a5fa;
}

[data-theme="dark"] .important-info-warning {
    border-top-color: rgba(59, 130, 246, 0.3);
}

[data-theme="dark"] .footer {
    background: rgba(15, 23, 42, 0.8);
    border-top-color: var(--color-slate-200);
}

[data-theme="dark"] .no-results-icon {
    background: var(--color-slate-100);
    color: var(--color-slate-400);
}

[data-theme="dark"] .theme-toggle {
    background: var(--color-slate-100);
    border-color: var(--color-slate-200);
    color: var(--color-slate-600);
}

[data-theme="dark"] .theme-toggle:hover {
    background: var(--color-slate-200);
}

[data-theme="dark"] .theme-toggle .icon-sun {
    display: block;
}

[data-theme="dark"] .theme-toggle .icon-moon {
    display: none;
}

[data-theme="dark"] .header-badge {
    background: rgba(30, 58, 95, 0.5);
    border-color: #3b82f6;
}

[data-theme="dark"] .tag-private {
    background: rgba(30, 58, 95, 0.5);
    color: #93c5fd;
    border-color: #1e40af;
}

[data-theme="dark"] .tag-government {
    background: rgba(76, 29, 149, 0.3);
    color: #c4b5fd;
    border-color: #5b21b6;
}

[data-theme="dark"] .tag-cash {
    background: rgba(20, 83, 45, 0.4);
    color: #86efac;
    border-color: #166534;
}

[data-theme="dark"] .criteria-list {
    color: #9ca3af;
}

[data-theme="dark"] .criteria-list li::before {
    color: #6b7280;
}

[data-theme="dark"] .criteria-more summary {
    color: #93c5fd;
}

[data-theme="dark"] .savings-program + .savings-program {
    border-top-color: #166534;
}

/* Smooth theme transition */
html {
    color-scheme: light dark;
}

html, body, .header, .info-card, .drug-card, .btn-secondary, .btn-tertiary,
.important-info, .footer, .theme-toggle, .drug-detail, .drug-savings,
.filter-btn, .sort-select {
    transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}