:root {
    --color-primary: #8B7355;
    --color-primary-dark: #5D4E37;
    --color-primary-light: #A0826D;
    --color-secondary: #2C5F2D;
    --color-secondary-dark: #1B3A1C;
    --color-secondary-light: #4A7C59;
    --color-accent: #D4AF37;
    --color-accent-dark: #B8941F;

    --color-bg-primary: #FFF8E7;
    --color-bg-secondary: #F5EDD6;
    --color-bg-dark: #1A1A1A;
    --color-text-primary: #2C2416;
    --color-text-secondary: #5D4E37;
    --color-text-light: #F5EDD6;
    --color-border: #D4C5A9;

    --font-heading: 'Cinzel', serif;
    --font-body: 'Crimson Text', serif;

    --fs-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
    --fs-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
    --fs-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
    --fs-md: clamp(1.125rem, 1rem + 0.625vw, 1.5rem);
    --fs-lg: clamp(1.5rem, 1.3rem + 1vw, 2.25rem);
    --fs-xl: clamp(2rem, 1.6rem + 2vw, 3.5rem);
    --fs-2xl: clamp(2.5rem, 2rem + 2.5vw, 4.5rem);

    --space-xs: clamp(0.5rem, 0.45rem + 0.25vw, 0.75rem);
    --space-sm: clamp(0.75rem, 0.65rem + 0.5vw, 1.25rem);
    --space-md: clamp(1rem, 0.85rem + 0.75vw, 1.75rem);
    --space-lg: clamp(1.5rem, 1.2rem + 1.5vw, 3rem);
    --space-xl: clamp(2rem, 1.5rem + 2.5vw, 4.5rem);
    --space-2xl: clamp(3rem, 2rem + 5vw, 8rem);

    --container-max: 1280px;
    --container-padding: clamp(1rem, 2vw, 2rem);

    --shadow-sm: 0 1px 3px rgba(44, 36, 22, 0.1);
    --shadow-md: 0 4px 6px rgba(44, 36, 22, 0.1), 0 2px 4px rgba(44, 36, 22, 0.06);
    --shadow-lg: 0 10px 15px rgba(44, 36, 22, 0.1), 0 4px 6px rgba(44, 36, 22, 0.05);
    --shadow-xl: 0 20px 25px rgba(44, 36, 22, 0.1), 0 10px 10px rgba(44, 36, 22, 0.04);

    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-body);
    font-size: var(--fs-base);
    line-height: 1.7;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-base);
}

ul {
    list-style: none;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.section-title {
    font-family: var(--font-heading);
    font-size: var(--fs-xl);
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: var(--space-sm);
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(to right, var(--color-accent), var(--color-accent-dark));
}

.section-subtitle {
    font-size: var(--fs-md);
    color: var(--color-text-secondary);
    font-style: italic;
}

.section-header--light .section-title {
    color: var(--color-text-light);
}

.section-header--light .section-subtitle {
    color: var(--color-bg-secondary);
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
}

.nav__container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--space-sm) var(--container-padding);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav__logo-text {
    font-family: var(--font-heading);
    font-size: var(--fs-lg);
    font-weight: 700;
    color: var(--color-accent);
    letter-spacing: 2px;
    transition: color var(--transition-base);
}

.nav__logo:hover .nav__logo-text {
    color: var(--color-accent-dark);
}

.nav__toggle-checkbox {
    display: none;
}

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.nav__toggle-line {
    width: 25px;
    height: 2px;
    background-color: var(--color-accent);
    transition: all var(--transition-base);
    display: block;
}

.nav__menu {
    display: flex;
    gap: var(--space-md);
    align-items: center;
}

.nav__link {
    font-family: var(--font-heading);
    font-size: var(--fs-sm);
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: var(--space-xs) var(--space-sm);
    position: relative;
    transition: color var(--transition-base);
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width var(--transition-base);
}

.nav__link:hover {
    color: var(--color-accent);
}

.nav__link:hover::after {
    width: 100%;
}

section:target {
    animation: highlightSection 1.5s ease-out;
}

@keyframes highlightSection {
    0% {
        background-color: rgba(212, 175, 55, 0.1);
    }
    100% {
        background-color: transparent;
    }
}

.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-image:
        linear-gradient(135deg, rgba(44, 95, 45, 0.7) 0%, rgba(26, 26, 26, 0.8) 100%),
        url('https://images.unsplash.com/photo-1519681393784-d120267933ba?w=1920');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    overflow: hidden;
}

.hero__overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, transparent 0%, rgba(26, 26, 26, 0.5) 100%);
}

.hero__content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--color-text-light);
    max-width: 900px;
    padding: var(--container-padding);
    animation: fadeInUp 1s ease-out;
}

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

.hero__title {
    font-family: var(--font-heading);
    font-size: var(--fs-2xl);
    font-weight: 700;
    margin-bottom: var(--space-sm);
    color: var(--color-accent);
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.7);
    letter-spacing: 3px;
}

.hero__subtitle {
    font-size: var(--fs-lg);
    font-style: italic;
    margin-bottom: var(--space-lg);
    color: var(--color-bg-secondary);
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.7);
}

.hero__quote {
    margin: var(--space-lg) 0;
    padding: var(--space-md);
    border-left: 4px solid var(--color-accent);
    background-color: rgba(26, 26, 26, 0.5);
    backdrop-filter: blur(5px);
}

.hero__quote p {
    font-size: var(--fs-md);
    font-style: italic;
    margin-bottom: var(--space-xs);
}

.hero__quote cite {
    font-size: var(--fs-sm);
    color: var(--color-accent);
    font-style: normal;
}

.hero__cta {
    display: inline-block;
    margin-top: var(--space-lg);
    padding: var(--space-sm) var(--space-lg);
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: var(--color-bg-dark);
    font-family: var(--font-heading);
    font-size: var(--fs-md);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
}

.hero__cta:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
    background: linear-gradient(135deg, var(--color-accent-dark), var(--color-accent));
    animation: pulse 1.5s ease-in-out infinite;
}

.hero__cta:active {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

@keyframes pulse {
    0%, 100% {
        box-shadow: var(--shadow-xl);
    }
    50% {
        box-shadow: 0 25px 35px rgba(212, 175, 55, 0.3), 0 15px 15px rgba(212, 175, 55, 0.2);
    }
}

.hero__scroll {
    position: absolute;
    bottom: var(--space-lg);
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% {
        transform: translate(-50%, 0);
    }
    50% {
        transform: translate(-50%, 10px);
    }
}

.hero__scroll-icon {
    font-size: var(--fs-xl);
    color: var(--color-accent);
}

.biography {
    padding: var(--space-2xl) 0;
}

.biography__content {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.biography__card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    align-items: center;
    padding: var(--space-lg);
    background-color: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.biography__card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.biography__card--reverse {
    grid-template-columns: 1fr 1fr;
}

.biography__card--reverse .biography__image-container {
    order: 2;
}

.biography__card--reverse .biography__text {
    order: 1;
}

.biography__image-container {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

.biography__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.biography__card:hover .biography__image {
    transform: scale(1.05);
}

.biography__heading {
    font-family: var(--font-heading);
    font-size: var(--fs-lg);
    color: var(--color-primary-dark);
    margin-bottom: var(--space-md);
}

.biography__paragraph {
    margin-bottom: var(--space-sm);
    text-align: justify;
    color: var(--color-text-primary);
}

.biography__paragraph:last-child {
    margin-bottom: 0;
}

.philosophy {
    padding: var(--space-2xl) 0;
    background: linear-gradient(135deg, var(--color-secondary-dark) 0%, var(--color-bg-dark) 100%);
    color: var(--color-text-light);
}

.philosophy__content {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.philosophy__main {
    background-color: rgba(255, 248, 231, 0.05);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-accent);
}

.philosophy__heading {
    font-family: var(--font-heading);
    font-size: var(--fs-lg);
    color: var(--color-accent);
    margin-bottom: var(--space-md);
}

.philosophy__paragraph {
    margin-bottom: var(--space-md);
    text-align: justify;
    line-height: 1.8;
}

.philosophy__paragraph strong {
    color: var(--color-accent);
    font-weight: 600;
}

.philosophy__paragraph em {
    color: var(--color-bg-secondary);
}

.philosophy__quote {
    margin: var(--space-lg) 0;
    padding: var(--space-md);
    border-left: 4px solid var(--color-accent);
    background-color: rgba(212, 175, 55, 0.1);
    font-style: italic;
}

.philosophy__quote p {
    font-size: var(--fs-md);
    margin-bottom: var(--space-sm);
    color: var(--color-bg-secondary);
}

.philosophy__quote cite {
    font-size: var(--fs-sm);
    color: var(--color-accent);
    font-style: normal;
}

.philosophy__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.philosophy__card {
    background-color: rgba(255, 248, 231, 0.08);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    border: 1px solid rgba(212, 175, 55, 0.3);
    transition: all var(--transition-base);
}

.philosophy__card:hover {
    transform: translateY(-5px);
    background-color: rgba(255, 248, 231, 0.12);
    border-color: var(--color-accent);
    box-shadow: 0 10px 20px rgba(212, 175, 55, 0.2);
}

.philosophy__card-icon {
    font-size: var(--fs-xl);
    margin-bottom: var(--space-sm);
}

.philosophy__card-icon i {
    font-size: 2.5rem;
}

.philosophy__card-title {
    font-family: var(--font-heading);
    font-size: var(--fs-md);
    color: var(--color-accent);
    margin-bottom: var(--space-sm);
}

.philosophy__card-text {
    font-size: var(--fs-base);
    line-height: 1.7;
    color: var(--color-bg-secondary);
}

.philosophy__conclusion {
    background-color: rgba(255, 248, 231, 0.05);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-secondary-light);
}

.philosophy__conclusion-title {
    font-family: var(--font-heading);
    font-size: var(--fs-lg);
    color: var(--color-accent);
    margin-bottom: var(--space-md);
    text-align: center;
}

.works {
    padding: var(--space-2xl) 0;
    background-color: var(--color-bg-secondary);
}

.works__grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.work-card {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: var(--space-lg);
    background-color: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.work-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.work-card--featured {
    border: 3px solid var(--color-accent);
}

.work-card__image-container {
    position: relative;
    height: 100%;
    overflow: hidden;
}

.work-card__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.work-card:hover .work-card__image {
    transform: scale(1.1);
}

.work-card__year {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    background-color: var(--color-accent);
    color: var(--color-bg-dark);
    font-family: var(--font-heading);
    font-size: var(--fs-sm);
    font-weight: 600;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
}

.work-card__badge {
    position: absolute;
    top: var(--space-md);
    left: var(--space-sm);
    background: linear-gradient(135deg, var(--color-secondary), var(--color-secondary-dark));
    color: var(--color-text-light);
    font-family: var(--font-heading);
    font-size: var(--fs-xs);
    font-weight: 600;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.work-card__content {
    padding: var(--space-lg);
}

.work-card__title {
    font-family: var(--font-heading);
    font-size: var(--fs-lg);
    color: var(--color-primary-dark);
    margin-bottom: var(--space-xs);
}

.work-card__subtitle {
    font-size: var(--fs-md);
    color: var(--color-text-secondary);
    font-style: italic;
    margin-bottom: var(--space-md);
}

.work-card__description {
    margin-bottom: var(--space-md);
    text-align: justify;
    line-height: 1.7;
}

.work-card__trilogy {
    background-color: var(--color-bg-secondary);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
}

.work-card__trilogy-title {
    font-family: var(--font-heading);
    font-size: var(--fs-md);
    color: var(--color-primary-dark);
    margin-bottom: var(--space-sm);
}

.work-card__trilogy-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.work-card__trilogy-list li {
    padding-left: var(--space-md);
    position: relative;
}

.work-card__trilogy-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-accent);
}

.work-card__highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-xs);
}

.work-card__highlights li {
    padding: var(--space-xs) var(--space-sm);
    background-color: var(--color-bg-secondary);
    border-left: 3px solid var(--color-accent);
    font-size: var(--fs-sm);
    border-radius: var(--radius-sm);
}

.legacy {
    padding: var(--space-2xl) 0;
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-bg-dark) 100%);
    color: var(--color-text-light);
}

.legacy__content {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.legacy__feature {
    background-color: rgba(255, 248, 231, 0.05);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-accent);
}

.legacy__feature-content {
    margin-bottom: var(--space-lg);
}

.legacy__feature-title {
    font-family: var(--font-heading);
    font-size: var(--fs-xl);
    color: var(--color-accent);
    margin-bottom: var(--space-md);
    text-align: center;
}

.legacy__feature-text {
    font-size: var(--fs-md);
    line-height: 1.8;
    text-align: justify;
    color: var(--color-bg-secondary);
}

.legacy__feature-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.legacy__stat {
    text-align: center;
    padding: var(--space-md);
    background-color: rgba(212, 175, 55, 0.1);
    border-radius: var(--radius-md);
    border: 1px solid rgba(212, 175, 55, 0.3);
}

.legacy__stat-number {
    display: block;
    font-family: var(--font-heading);
    font-size: var(--fs-xl);
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: var(--space-xs);
}

.legacy__stat-label {
    display: block;
    font-size: var(--fs-sm);
    color: var(--color-bg-secondary);
}

.legacy__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.legacy__card {
    background-color: rgba(255, 248, 231, 0.08);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    border: 1px solid rgba(212, 175, 55, 0.3);
    transition: all var(--transition-base);
}

.legacy__card:hover {
    transform: translateY(-5px);
    background-color: rgba(255, 248, 231, 0.12);
    border-color: var(--color-accent);
    box-shadow: 0 10px 20px rgba(212, 175, 55, 0.2);
}

.legacy__card-title {
    font-family: var(--font-heading);
    font-size: var(--fs-md);
    color: var(--color-accent);
    margin-bottom: var(--space-sm);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.legacy__card-title i {
    font-size: var(--fs-lg);
}

.legacy__card-text {
    font-size: var(--fs-base);
    line-height: 1.7;
    color: var(--color-bg-secondary);
}

.scholars {
    padding: var(--space-2xl) 0;
    background: linear-gradient(135deg, var(--color-secondary-dark) 0%, var(--color-primary-dark) 100%);
    color: var(--color-text-light);
}

.scholars__content {
    max-width: 1000px;
    margin: 0 auto;
}

.scholar-feature {
    background-color: rgba(255, 248, 231, 0.05);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-accent);
}

.scholar-feature__header {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: var(--space-lg);
    align-items: center;
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-lg);
    border-bottom: 2px solid rgba(212, 175, 55, 0.3);
}

.scholar-feature__image-wrapper {
    position: relative;
}

.scholar-feature__photo {
    width: 250px;
    height: 250px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--color-accent);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    transition: transform var(--transition-base);
}

.scholar-feature__photo:hover {
    transform: scale(1.05);
}

.scholar-feature__intro {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.scholar-feature__name {
    font-family: var(--font-heading);
    font-size: var(--fs-xl);
    color: var(--color-accent);
    margin-bottom: 0;
}

.scholar-feature__title {
    font-size: var(--fs-md);
    color: var(--color-bg-secondary);
    font-style: italic;
    margin-bottom: var(--space-sm);
}

.scholar-feature__credentials {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.credential-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    background-color: rgba(212, 175, 55, 0.2);
    border: 1px solid var(--color-accent);
    border-radius: var(--radius-sm);
    font-size: var(--fs-xs);
    color: var(--color-bg-secondary);
    transition: all var(--transition-base);
}

.credential-badge:hover {
    background-color: rgba(212, 175, 55, 0.3);
    transform: translateY(-2px);
}

.credential-badge i {
    color: var(--color-accent);
    font-size: var(--fs-sm);
}

.scholar-feature__bio {
    margin-bottom: var(--space-lg);
}

.scholar-feature__paragraph {
    margin-bottom: var(--space-md);
    line-height: 1.8;
    text-align: justify;
    color: var(--color-bg-secondary);
}

.scholar-feature__contributions,
.scholar-feature__concepts,
.scholar-feature__impact {
    margin-bottom: var(--space-lg);
}

.scholar-feature__subtitle {
    font-family: var(--font-heading);
    font-size: var(--fs-lg);
    color: var(--color-accent);
    margin-bottom: var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.scholar-feature__subtitle i {
    font-size: var(--fs-md);
}

.scholar-feature__list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.scholar-feature__list li {
    padding-left: var(--space-md);
    position: relative;
    color: var(--color-bg-secondary);
    line-height: 1.7;
}

.scholar-feature__list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: bold;
}

.concept-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-md);
    margin-top: var(--space-md);
}

.concept-card {
    background-color: rgba(255, 248, 231, 0.08);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    border: 1px solid rgba(212, 175, 55, 0.3);
    transition: all var(--transition-base);
}

.concept-card:hover {
    transform: translateY(-5px);
    background-color: rgba(255, 248, 231, 0.12);
    border-color: var(--color-accent);
    box-shadow: 0 10px 20px rgba(212, 175, 55, 0.2);
}

.concept-card__title {
    font-family: var(--font-heading);
    font-size: var(--fs-md);
    color: var(--color-accent);
    margin-bottom: var(--space-sm);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.concept-card__title i {
    font-size: var(--fs-base);
}

.concept-card__text {
    font-size: var(--fs-sm);
    line-height: 1.7;
    color: var(--color-bg-secondary);
}

.scholar-feature__quote {
    margin: var(--space-xl) 0;
    padding: var(--space-lg);
    border-left: 4px solid var(--color-accent);
    background-color: rgba(212, 175, 55, 0.1);
    font-style: italic;
    text-align: center;
}

.scholar-feature__quote p {
    font-size: var(--fs-lg);
    margin-bottom: var(--space-sm);
    color: var(--color-bg-secondary);
}

.scholar-feature__quote cite {
    font-size: var(--fs-md);
    color: var(--color-accent);
    font-style: normal;
    font-family: var(--font-heading);
}

.library {
    padding: var(--space-2xl) 0;
    background-color: var(--color-bg-primary);
    position: relative;
    overflow: hidden;
}

.library__intro {
    max-width: 900px;
    margin: 0 auto var(--space-xl);
    text-align: center;
}

.library__intro-text {
    font-size: var(--fs-md);
    line-height: 1.8;
    color: var(--color-text-primary);
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.1), rgba(139, 115, 85, 0.1));
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--color-accent);
}

.library__intro-text strong {
    color: var(--color-primary-dark);
    font-weight: 600;
}

.library__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.book-card {
    position: relative;
    background-color: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

.book-card:hover {
    transform: translateY(-10px) rotateY(2deg);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(212, 175, 55, 0.3);
}

.book-card__image-wrapper {
    position: relative;
    width: 100%;
    height: 450px;
    overflow: hidden;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary-light));
}

.book-card__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow), filter var(--transition-base);
    filter: brightness(0.95);
}

.book-card:hover .book-card__image {
    transform: scale(1.1);
    filter: brightness(1.05);
}

.book-card__overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent 0%, rgba(0, 0, 0, 0.7) 100%);
    display: flex;
    align-items: flex-end;
    justify-content: flex-end;
    padding: var(--space-md);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.book-card:hover .book-card__overlay {
    opacity: 1;
}

.book-card__year {
    font-family: var(--font-heading);
    font-size: var(--fs-xl);
    font-weight: 700;
    color: var(--color-accent);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
}

.book-card__content {
    padding: var(--space-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.book-card__title {
    font-family: var(--font-heading);
    font-size: var(--fs-md);
    color: var(--color-primary-dark);
    margin-bottom: var(--space-xs);
    line-height: 1.4;
}

.book-card__editor {
    font-size: var(--fs-sm);
    color: var(--color-text-secondary);
    font-style: italic;
    margin-bottom: var(--space-sm);
}

.book-card__description {
    font-size: var(--fs-sm);
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
    line-height: 1.7;
    text-align: justify;
}

.book-card__toggle {
    align-self: center;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: var(--color-bg-dark);
    border: none;
    padding: var(--space-xs) var(--space-lg);
    border-radius: var(--radius-md);
    font-family: var(--font-heading);
    font-size: var(--fs-sm);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.book-card__toggle:hover {
    background: linear-gradient(135deg, var(--color-accent-dark), var(--color-accent));
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.book-card__toggle i {
    transition: transform var(--transition-base);
}

.book-card__toggle.active i {
    transform: rotate(180deg);
}

.book-card__extra {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease, margin-top 0.5s ease, opacity 0.5s ease;
    opacity: 0;
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    padding: 0 var(--space-md);
}

.book-card__extra.expanded {
    max-height: 500px;
    margin-top: var(--space-md);
    padding: var(--space-md);
    opacity: 1;
}

.book-card__extra h4 {
    font-family: var(--font-heading);
    font-size: var(--fs-base);
    color: var(--color-primary-dark);
    margin-bottom: var(--space-sm);
}

.book-card__extra ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.book-card__extra li {
    padding-left: var(--space-md);
    position: relative;
    font-size: var(--fs-sm);
    color: var(--color-text-primary);
}

.book-card__extra li::before {
    content: '✦';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-size: var(--fs-base);
}

.library__tribute {
    max-width: 1000px;
    margin: var(--space-2xl) auto 0;
}

.tribute-card {
    background: linear-gradient(135deg, rgba(139, 115, 85, 0.1), rgba(212, 175, 55, 0.1));
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    border: 3px solid var(--color-accent);
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
}

.tribute-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><text y="50" font-size="80" opacity="0.03">✒</text></svg>') repeat;
    pointer-events: none;
}

.tribute-card__title {
    font-family: var(--font-heading);
    font-size: var(--fs-lg);
    color: var(--color-primary-dark);
    margin-bottom: var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    position: relative;
}

.tribute-card__title i {
    color: var(--color-accent);
    font-size: var(--fs-xl);
}

.tribute-card__text {
    font-size: var(--fs-base);
    line-height: 1.8;
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
    text-align: justify;
    position: relative;
}

.tribute-card__quote {
    font-size: var(--fs-md);
    font-style: italic;
    color: var(--color-primary-dark);
    text-align: center;
    padding: var(--space-md);
    border-left: 4px solid var(--color-accent);
    background-color: rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-md);
    position: relative;
}

.quote-final {
    padding: var(--space-2xl) 0;
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-secondary-dark) 100%);
}

.quote-final__content {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--space-xl);
    text-align: center;
    border: 3px solid var(--color-accent);
    border-radius: var(--radius-lg);
    background-color: rgba(26, 26, 26, 0.5);
}

.quote-final__text {
    font-size: var(--fs-lg);
    font-style: italic;
    color: var(--color-bg-secondary);
    margin-bottom: var(--space-md);
    line-height: 1.8;
}

.quote-final__author {
    font-family: var(--font-heading);
    font-size: var(--fs-md);
    color: var(--color-accent);
    font-style: normal;
}

.quote-final__author::before {
    content: '— ';
}

.footer {
    background-color: var(--color-bg-dark);
    color: var(--color-text-light);
    padding: var(--space-xl) 0 var(--space-md);
}

.footer__content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid rgba(212, 175, 55, 0.3);
}

.footer__section {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer__title {
    font-family: var(--font-heading);
    font-size: var(--fs-md);
    color: var(--color-accent);
    margin-bottom: var(--space-xs);
}

.footer__text {
    font-size: var(--fs-sm);
    line-height: 1.7;
    color: var(--color-bg-secondary);
}

.footer__links {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.footer__link {
    font-size: var(--fs-sm);
    color: var(--color-bg-secondary);
    transition: color var(--transition-base), padding-left var(--transition-base);
    padding-left: 0;
}

.footer__link:hover {
    color: var(--color-accent);
    padding-left: var(--space-xs);
}

.footer__bottom {
    text-align: center;
}

.footer__copyright {
    font-size: var(--fs-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xs);
}

.footer__quote {
    font-size: var(--fs-sm);
    font-style: italic;
    color: var(--color-accent);
}

.footer__credits {
    font-size: var(--fs-xs);
    color: var(--color-text-secondary);
    margin-top: var(--space-xs);
}

.footer__credits-link {
    color: var(--color-accent);
    font-weight: 600;
    transition: color var(--transition-base);
    text-decoration: none;
    position: relative;
}

.footer__credits-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-accent);
    transition: width var(--transition-base);
}

.footer__credits-link:hover {
    color: var(--color-accent-dark);
}

.footer__credits-link:hover::after {
    width: 100%;
}

@media (max-width: 768px) {
    .nav__toggle {
        display: flex;
    }

    .nav__menu {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 100%;
        max-width: 300px;
        height: calc(100vh - 70px);
        background-color: rgba(26, 26, 26, 0.98);
        flex-direction: column;
        align-items: flex-start;
        padding: var(--space-lg);
        gap: var(--space-md);
        transition: right var(--transition-slow);
        box-shadow: var(--shadow-xl);
    }

    .nav__toggle-checkbox:checked ~ .nav__menu {
        right: 0;
    }

    .nav__toggle-checkbox:checked ~ .nav__toggle .nav__toggle-line:nth-child(1) {
        transform: rotate(45deg) translateY(10px);
    }

    .nav__toggle-checkbox:checked ~ .nav__toggle .nav__toggle-line:nth-child(2) {
        opacity: 0;
    }

    .nav__toggle-checkbox:checked ~ .nav__toggle .nav__toggle-line:nth-child(3) {
        transform: rotate(-45deg) translateY(-10px);
    }

    .biography__card,
    .biography__card--reverse {
        grid-template-columns: 1fr;
    }

    .biography__card--reverse .biography__image-container {
        order: 1;
    }

    .biography__card--reverse .biography__text {
        order: 2;
    }

    .work-card {
        grid-template-columns: 1fr;
    }

    .work-card__image-container {
        height: 300px;
    }

    .legacy__feature-stats {
        grid-template-columns: 1fr;
    }

    .philosophy__grid,
    .legacy__grid {
        grid-template-columns: 1fr;
    }

    .library__grid {
        grid-template-columns: 1fr;
    }
    
    .book-card__image-wrapper {
        height: 350px;
    }
}

@media (max-width: 480px) {
    .hero {
        background-attachment: scroll;
    }

    .hero__title {
        font-size: var(--fs-xl);
    }

    .biography__image-container {
        height: 250px;
    }

    .work-card__highlights {
        grid-template-columns: 1fr;
    }

    .library__grid {
        grid-template-columns: 1fr;
    }
    
    .book-card__image-wrapper {
        height: 300px;
    }
    
    .tribute-card {
        padding: var(--space-md);
    }

    .footer__content {
        grid-template-columns: 1fr;
    }

    .scholar-feature__header {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .scholar-feature__photo {
        width: 200px;
        height: 200px;
        margin: 0 auto;
    }

    .scholar-feature__credentials {
        justify-content: center;
    }

    .concept-cards {
        grid-template-columns: 1fr;
    }
}

.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: var(--color-bg-dark);
    font-size: 1.5rem;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    z-index: 999;
    transition: all var(--transition-base);
    opacity: 0;
    visibility: hidden;
    animation: fadeInScrollButton 0.5s ease forwards;
    animation-delay: 2s;
}

@keyframes fadeInScrollButton {
    to {
        opacity: 1;
        visibility: visible;
    }
}

.scroll-to-top:hover {
    transform: translateY(-5px) scale(1.1);
    box-shadow: var(--shadow-xl);
    background: linear-gradient(135deg, var(--color-accent-dark), var(--color-accent));
}

.scroll-to-top:active {
    transform: translateY(-3px) scale(1.05);
}

.biography__card,
.philosophy__card,
.work-card,
.legacy__card,
.product-card {
    animation: fadeInUp 0.8s ease-out forwards;
    opacity: 0;
}

.biography__card:nth-child(1) { animation-delay: 0.1s; }
.biography__card:nth-child(2) { animation-delay: 0.2s; }
.biography__card:nth-child(3) { animation-delay: 0.3s; }
.biography__card:nth-child(4) { animation-delay: 0.4s; }

.philosophy__card:nth-child(1) { animation-delay: 0.1s; }
.philosophy__card:nth-child(2) { animation-delay: 0.2s; }
.philosophy__card:nth-child(3) { animation-delay: 0.3s; }
.philosophy__card:nth-child(4) { animation-delay: 0.4s; }
.philosophy__card:nth-child(5) { animation-delay: 0.5s; }
.philosophy__card:nth-child(6) { animation-delay: 0.6s; }

.work-card:nth-child(1) { animation-delay: 0.1s; }
.work-card:nth-child(2) { animation-delay: 0.2s; }
.work-card:nth-child(3) { animation-delay: 0.3s; }
.work-card:nth-child(4) { animation-delay: 0.4s; }

.legacy__card:nth-child(1) { animation-delay: 0.1s; }
.legacy__card:nth-child(2) { animation-delay: 0.2s; }
.legacy__card:nth-child(3) { animation-delay: 0.3s; }
.legacy__card:nth-child(4) { animation-delay: 0.4s; }
.legacy__card:nth-child(5) { animation-delay: 0.5s; }
.legacy__card:nth-child(6) { animation-delay: 0.6s; }

.product-card {
    animation-delay: calc(0.1s * var(--card-index, 1));
}

.product-card:nth-child(1) { --card-index: 1; }
.product-card:nth-child(2) { --card-index: 2; }
.product-card:nth-child(3) { --card-index: 3; }
.product-card:nth-child(4) { --card-index: 4; }
.product-card:nth-child(5) { --card-index: 5; }
.product-card:nth-child(6) { --card-index: 6; }
.product-card:nth-child(7) { --card-index: 7; }
.product-card:nth-child(8) { --card-index: 8; }

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

    .scroll-to-top {
        animation: none;
        opacity: 1;
        visibility: visible;
    }
}

body {
    animation: fadeIn 0.5s ease-in;
}

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

::selection {
    background-color: var(--color-accent);
    color: var(--color-bg-dark);
}

::-moz-selection {
    background-color: var(--color-accent);
    color: var(--color-bg-dark);
}

::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--color-accent);
    border-radius: 6px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-accent-dark);
}