:root {
    --primary-color: #6366f1;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --bg-primary: #f8fafc;
    --bg-secondary: #f1f5f9;
    --bg-white: #ffffff;
    --border-color: #e2e8f0;

    /* Category colors */
    --racial-bias-color: #ef4444;     /* Red */
    --gender-bias-color: #ec4899;     /* Pink */
    --body-bias-color: #8b5cf6;  /* Purple */
    --cultural-bias-color: #06b6d4;   /* Cyan */
    --age-bias-color: #10b981;        /* Emerald */
    --socioeconomic-bias-color: #f59e0b;  /* Amber */
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
    display: flex;
    flex-direction: column;
}

/* Header */
header {
    background: var(--bg-white);
    padding: 1rem 2rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    text-decoration: none;
    display: block;
    border-bottom: none;
    cursor: pointer;
}

.logo-top {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: -0.75rem;
}

.logo-bottom {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    position: relative;
}

.logo-bottom::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

.logo:hover .logo-bottom::after {
    width: 100%;
}

nav a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    border-bottom: none;
    cursor: pointer;
}

/* Category Tabs */
#category-tabs {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem 0;
    margin: 0 auto;
    max-width: 100%;
    overflow-x: auto;
}

.category-tab {
    padding: 0.5rem 1.25rem;
    border: 1px solid var(--border-color);
    background: transparent;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Style for the "All" tab */
.category-tab[data-category="all"] {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.category-tab[data-category="all"].selected {
    background: var(--primary-color);
    color: white;
}

/* Styles for category-specific tabs */
.category-tab[data-category="Racial Bias"] {
    border-color: var(--racial-bias-color);
    color: var(--racial-bias-color);
}

.category-tab[data-category="Gender Bias"] {
    border-color: var(--gender-bias-color);
    color: var(--gender-bias-color);
}

.category-tab[data-category="Body Bias"] {
    border-color: var(--body-bias-color);
    color: var(--body-bias-color);
}

.category-tab[data-category="Cultural Bias"] {
    border-color: var(--cultural-bias-color);
    color: var(--cultural-bias-color);
}

.category-tab[data-category="Age Bias"] {
    border-color: var(--age-bias-color);
    color: var(--age-bias-color);
}

.category-tab[data-category="Socioeconomic Bias"] {
    border-color: var(--socioeconomic-bias-color);
    color: var(--socioeconomic-bias-color);
}

/* Selected states */
.category-tab[data-category="Racial Bias"].selected {
    background: var(--racial-bias-color);
    color: white;
}

.category-tab[data-category="Gender Bias"].selected {
    background: var(--gender-bias-color);
    color: white;
}

.category-tab[data-category="Body Bias"].selected {
    background: var(--body-bias-color);
    color: white;
}

.category-tab[data-category="Cultural Bias"].selected {
    background: var(--cultural-bias-color);
    color: white;
}

.category-tab[data-category="Age Bias"].selected {
    background: var(--age-bias-color);
    color: white;
}

.category-tab[data-category="Socioeconomic Bias"].selected {
    background: var(--socioeconomic-bias-color);
    color: white;
}

/* Hover states */
.category-tab:hover:not(.selected) {
    background: rgba(0, 0, 0, 0.05);
}

/* Cards Container */
#cards-container {
    padding: 1rem;
    margin: 0 auto;
    max-width: 100%;
    overflow-x: hidden;
}

/* Card Styles */
.card {
    width: 100%;
    max-width: 380px;
    margin-bottom: 16px;
    background: var(--bg-white);
    border-radius: 0 0 12px 12px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    transition: transform 0.4s ease, box-shadow 0.4s ease;
    border-top: 5px solid var(--primary-color);
    border-image: linear-gradient(to right, var(--primary-color), var(--primary-color)) 1;
}

.card-actions,
.card-actions button,
.card-categories span {
    pointer-events: auto;
}

/* Single category styles */
.card[data-categories~="Racial Bias"] { 
    border-top-color: var(--racial-bias-color);
}
.card[data-categories~="Gender Bias"] { 
    border-top-color: var(--gender-bias-color);
}
.card[data-categories~="Body Bias"] { 
    border-top-color: var(--body-bias-color);
}
.card[data-categories~="Cultural Bias"] { 
    border-top-color: var(--cultural-bias-color);
}
.card[data-categories~="Age Bias"] { 
    border-top-color: var(--age-bias-color);
}
.card[data-categories~="Socioeconomic Bias"] { 
    border-top-color: var(--socioeconomic-bias-color);
}

/* Two Categories Combinations */
.card[data-categories*="Racial Bias"][data-categories*="Gender Bias"] {
    border-top: 5px solid;
    border-image: linear-gradient(to right, 
        var(--racial-bias-color) 0%, var(--racial-bias-color) 50%, 
        var(--gender-bias-color) 50%, var(--gender-bias-color) 100%) 1;
}
.card[data-categories*="Racial Bias"][data-categories*="Body Bias"] {
    border-top: 5px solid;
    border-image: linear-gradient(to right, 
        var(--racial-bias-color) 0%, var(--racial-bias-color) 50%, 
        var(--body-bias-color) 50%, var(--body-bias-color) 100%) 1;
}
.card[data-categories*="Racial Bias"][data-categories*="Cultural Bias"] {
    border-top: 5px solid;
    border-image: linear-gradient(to right, 
        var(--racial-bias-color) 0%, var(--racial-bias-color) 50%, 
        var(--cultural-bias-color) 50%, var(--cultural-bias-color) 100%) 1;
}
.card[data-categories*="Racial Bias"][data-categories*="Age Bias"] {
    border-top: 5px solid;
    border-image: linear-gradient(to right, 
        var(--racial-bias-color) 0%, var(--racial-bias-color) 50%, 
        var(--age-bias-color) 50%, var(--age-bias-color) 100%) 1;
}
.card[data-categories*="Racial Bias"][data-categories*="Socioeconomic Bias"] {
    border-top: 5px solid;
    border-image: linear-gradient(to right, 
        var(--racial-bias-color) 0%, var(--racial-bias-color) 50%, 
        var(--socioeconomic-bias-color) 50%, var(--socioeconomic-bias-color) 100%) 1;
}
.card[data-categories*="Gender Bias"][data-categories*="Body Bias"] {
    border-top: 5px solid;
    border-image: linear-gradient(to right, 
        var(--gender-bias-color) 0%, var(--gender-bias-color) 50%, 
        var(--body-bias-color) 50%, var(--body-bias-color) 100%) 1;
}
.card[data-categories*="Gender Bias"][data-categories*="Cultural Bias"] {
    border-top: 5px solid;
    border-image: linear-gradient(to right, 
        var(--gender-bias-color) 0%, var(--gender-bias-color) 50%, 
        var(--cultural-bias-color) 50%, var(--cultural-bias-color) 100%) 1;
}
.card[data-categories*="Gender Bias"][data-categories*="Age Bias"] {
    border-top: 5px solid;
    border-image: linear-gradient(to right, 
        var(--gender-bias-color) 0%, var(--gender-bias-color) 50%, 
        var(--age-bias-color) 50%, var(--age-bias-color) 100%) 1;
}
.card[data-categories*="Gender Bias"][data-categories*="Socioeconomic Bias"] {
    border-top: 5px solid;
    border-image: linear-gradient(to right, 
        var(--gender-bias-color) 0%, var(--gender-bias-color) 50%, 
        var(--socioeconomic-bias-color) 50%, var(--socioeconomic-bias-color) 100%) 1;
}
.card[data-categories*="Body Bias"][data-categories*="Cultural Bias"] {
    border-top: 5px solid;
    border-image: linear-gradient(to right, 
        var(--body-bias-color) 0%, var(--body-bias-color) 50%, 
        var(--cultural-bias-color) 50%, var(--cultural-bias-color) 100%) 1;
}
.card[data-categories*="Body Bias"][data-categories*="Age Bias"] {
    border-top: 5px solid;
    border-image: linear-gradient(to right, 
        var(--body-bias-color) 0%, var(--body-bias-color) 50%, 
        var(--age-bias-color) 50%, var(--age-bias-color) 100%) 1;
}
.card[data-categories*="Body Bias"][data-categories*="Socioeconomic Bias"] {
    border-top: 5px solid;
    border-image: linear-gradient(to right, 
        var(--body-bias-color) 0%, var(--body-bias-color) 50%, 
        var(--socioeconomic-bias-color) 50%, var(--socioeconomic-bias-color) 100%) 1;
}
.card[data-categories*="Cultural Bias"][data-categories*="Age Bias"] {
    border-top: 5px solid;
    border-image: linear-gradient(to right, 
        var(--cultural-bias-color) 0%, var(--cultural-bias-color) 50%, 
        var(--age-bias-color) 50%, var(--age-bias-color) 100%) 1;
}
.card[data-categories*="Cultural Bias"][data-categories*="Socioeconomic Bias"] {
    border-top: 5px solid;
    border-image: linear-gradient(to right, 
        var(--cultural-bias-color) 0%, var(--cultural-bias-color) 50%, 
        var(--socioeconomic-bias-color) 50%, var(--socioeconomic-bias-color) 100%) 1;
}
.card[data-categories*="Age Bias"][data-categories*="Socioeconomic Bias"] {
    border-top: 5px solid;
    border-image: linear-gradient(to right, 
        var(--age-bias-color) 0%, var(--age-bias-color) 50%, 
        var(--socioeconomic-bias-color) 50%, var(--socioeconomic-bias-color) 100%) 1;
}

/* Three Categories Combinations */
.card[data-categories*="Racial Bias"][data-categories*="Gender Bias"][data-categories*="Body Bias"] {
    border-top: 5px solid;
    border-image: linear-gradient(to right, 
        var(--racial-bias-color) 0%, var(--racial-bias-color) 33.33%, 
        var(--gender-bias-color) 33.33%, var(--gender-bias-color) 66.66%,
        var(--body-bias-color) 66.66%, var(--body-bias-color) 100%) 1;
}
.card[data-categories*="Racial Bias"][data-categories*="Gender Bias"][data-categories*="Cultural Bias"] {
    border-top: 5px solid;
    border-image: linear-gradient(to right, 
        var(--racial-bias-color) 0%, var(--racial-bias-color) 33.33%, 
        var(--gender-bias-color) 33.33%, var(--gender-bias-color) 66.66%,
        var(--cultural-bias-color) 66.66%, var(--cultural-bias-color) 100%) 1;
}
.card[data-categories*="Racial Bias"][data-categories*="Gender Bias"][data-categories*="Age Bias"] {
    border-top: 5px solid;
    border-image: linear-gradient(to right, 
        var(--racial-bias-color) 0%, var(--racial-bias-color) 33.33%, 
        var(--gender-bias-color) 33.33%, var(--gender-bias-color) 66.66%,
        var(--age-bias-color) 66.66%, var(--age-bias-color) 100%) 1;
}
.card[data-categories*="Racial Bias"][data-categories*="Gender Bias"][data-categories*="Socioeconomic Bias"] {
    border-top: 5px solid;
    border-image: linear-gradient(to right, 
        var(--racial-bias-color) 0%, var(--racial-bias-color) 33.33%, 
        var(--gender-bias-color) 33.33%, var(--gender-bias-color) 66.66%,
        var(--socioeconomic-bias-color) 66.66%, var(--socioeconomic-bias-color) 100%) 1;
}
.card[data-categories*="Gender Bias"][data-categories*="Cultural Bias"][data-categories*="Socioeconomic Bias"] {
    border-top: 5px solid;
    border-image: linear-gradient(to right, 
        var(--gender-bias-color) 0%, var(--gender-bias-color) 33.33%, 
        var(--cultural-bias-color) 33.33%, var(--cultural-bias-color) 66.66%,
        var(--socioeconomic-bias-color) 66.66%, var(--socioeconomic-bias-color) 100%) 1;
}

.card:not(.fixed):hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.card-content {
    padding: 1.5rem;
}

.card-content p {
    margin: 0 0 1rem 0;
    color: var(--text-primary);
    font-size: 1.5em;
}

/* Style for the fixed info card */
.card.fixed {
    background: linear-gradient(135deg, var(--primary-color), #4338ca);
    color: white;
    padding: 1.5rem;
    border-image: none;
    border-radius: 12px;
}

.card.fixed h2 {
    font-size: 1.8em;
    margin-bottom: 1rem;
    color: #ffffff;
}

.card.fixed p {
    font-size: 1.2em;
    margin-bottom: 1rem;
    color: #f0f0f0;
}

.card.fixed ul {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

.card.fixed li {
    font-size: 1.1em;
    margin-bottom: 0.5rem;
    color: #f0f0f0;
}

.card.fixed a {
    color: #ffffff;
    text-decoration: underline;
}

.card-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 1rem;
}

.copy-btn, .learn-more-btn {
    width: 100%;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.875rem;
}

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

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

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

.learn-more-btn:hover {
    background: #5558dd;
}

.card-categories {
    padding: 1rem 1.5rem;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

.card-categories span {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--bg-white);
    border-radius: 15px;
    font-size: 0.75em;
    margin-right: 0.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

/* Dropdown styles */
.category-dropdown {
    display: none;
}

@media (max-width: 768px) {
    #category-tabs {
        display: none;
    }

    .category-dropdown {
        display: block;
        position: relative;
        z-index: 1000;
    }

    .category-dropdown-btn {
        width: 100%;
        padding: 12px 16px;
        background-color: transparent;
        border: 1px solid var(--border-color);
        border-radius: 20px;
        text-align: left;
        cursor: pointer;
        display: flex;
        justify-content: space-between;
        align-items: center;
        font-size: 0.875rem;
    }

    .category-dropdown-btn::after {
        content: '▼';
        font-size: 0.8em;
        transition: transform 0.2s ease;
    }

    .category-dropdown.open .category-dropdown-btn::after {
        transform: rotate(180deg);
    }

    .category-dropdown-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-color: rgba(255, 255, 255, 0.95);
        z-index: 900;
    }

    .category-dropdown.open .category-dropdown-overlay {
        display: block;
    }

    .category-dropdown-content {
        display: none;
        position: absolute;
        top: calc(100% + 8px);
        left: 0;
        width: 100%;
        background-color: white;
        border-radius: 12px;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        z-index: 1000;
        padding: 8px;
    }

    .category-dropdown.open .category-dropdown-content {
        display: block;
    }

    .category-dropdown-content button {
        display: block;
        width: 100%;
        padding: 12px 16px;
        border: none;
        background-color: transparent;
        text-align: left;
        cursor: pointer;
        border-radius: 8px;
        margin: 4px 0;
    }

    .category-dropdown-content button:hover {
        background-color: var(--bg-secondary);
    }

    .category-dropdown-btn[data-selected="Racial Bias"] { color: var(--racial-bias-color); }
    .category-dropdown-btn[data-selected="Gender Bias"] { color: var(--gender-bias-color); }
    .category-dropdown-btn[data-selected="Body Bias"] { color: var(--body-bias-color); }
    .category-dropdown-btn[data-selected="Cultural Bias"] { color: var(--cultural-bias-color); }
    .category-dropdown-btn[data-selected="Age Bias"] { color: var(--age-bias-color); }
    .category-dropdown-btn[data-selected="Socioeconomic Bias"] { color: var(--socioeconomic-bias-color); }
}

/* Detail View Styles */
.detail-container {
    min-height: calc(100vh - 64px);
    display: flex;
    flex-direction: column;
}

.text-section {
    height: 60vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    background: var(--bg-white);
    position: relative;
}

.text-section p {
    font-size: 2rem;
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto;
    color: var(--text-primary);
}

.detail-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.detail-actions .copy-btn {
    width: auto;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
}

.detail-info {
    padding: 3rem 2rem;
    background: var(--bg-primary);
    flex-grow: 1;
}

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

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

#categories {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.why-section, .how-section {
    margin-bottom: 2rem;
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 12px;
}

.why-section h2, .how-section h2 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.why-section p, .how-section p {
    color: var(--text-primary);
    line-height: 1.6;
}

.related-cards {
    margin-top: 3rem;
    padding: 0 2rem;
}

.related-cards h2 {
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    text-align: center;
}

#related-cards-container {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    max-width: 1400px;
    margin: 0 auto;
}

.related-cards .card {
    flex: 0 1 calc(33.333% - 1rem);
    max-width: calc(33.333% - 1rem);
    margin: 0;
}

@media (max-width: 1200px) {
    .related-cards .card {
        flex: 0 1 calc(50% - 1rem);
        max-width: calc(50% - 1rem);
    }
}

@media (max-width: 768px) {
    .related-cards {
        padding: 0 1rem;
    }
    
    .related-cards .card {
        flex: 0 1 100%;
        max-width: 100%;
    }

    .text-section {
        height: 70vh;
        padding: 1rem;
    }

    .text-section p {
        font-size: 1.25rem;
    }

    .detail-info {
        padding: 2rem 1rem;
    }

    .why-section, .how-section {
        padding: 1.5rem;
    }
}

/* Footer */
footer {
    background: var(--bg-white);
    border-top: 1px solid var(--border-color);
    padding: 1.5rem;
    margin-top: auto;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    text-align: center;
    color: var(--text-secondary);
}

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

/* About page styles */
.about-content {
    max-width: 800px;
    margin: 2rem auto;
    padding: 0 2rem;
}

.about-content h1 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.about-content h2 {
    margin: 2rem 0 1rem;
}

.about-content ul {
    margin-left: 1.5rem;
}

.about-container p {
    margin-bottom: 1.5rem;
}

.support-paragraph {
    background: #6466f1;
    padding: 1.5rem;
    border-radius: 8px;
    margin: 2rem 0;
    color: white;
}

.coffee-support {
    display: inline-block;
    margin-left: 5px;
}

.coffee-link {
    color: white;
    text-decoration: underline;
    padding: 5px 10px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.coffee-link:hover {
    background: white;
    color: #6466f1;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    border-bottom: 1px dotted var(--primary-color);
    transition: all 0.3s ease;
}

/* No results message */
.no-results {
    width: 100%;
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Hide scrollbar for tabs but keep functionality */
#category-tabs::-webkit-scrollbar {
    display: none;
}

#category-tabs {
    -ms-overflow-style: none;
    scrollbar-width: none;
}

/* Responsive Design */
@media (max-width: 700px) {
    header {
        padding: 1rem;
    }

    #cards-container {
        padding: 0.5rem;
    }

    .card {
        width: 100% !important;
        max-width: none !important;
    }

    .about-content {
        padding: 0 1rem;
    }
}

@media (max-width: 480px) {
    .logo-top {
        font-size: 1rem;
    }

    .logo-bottom {
        font-size: 1.5rem;
    }

    .category-tab {
        font-size: 0.8rem;
        padding: 0.4rem 0.8rem;
    }

    .text-section p {
        font-size: 1.125rem;
    }
}