/* 
-----------------------------------
  BASE STYLES
-----------------------------------
*/

:root {
    /* Color Palette */
    --color-primary: #f8f8f8;
    --color-secondary: #1a2639;
    --color-accent: #c15b3e;
    --color-text: #333333;
    --color-neutral: #e0e0e0;
    --color-white: #ffffff;
    --color-black: #000000;
    
    /* Typography */
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Open Sans', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.14);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

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

body {
    font-family: var(--font-body);
    color: var(--color-text);
    background-color: var(--color-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-secondary);
}

ul {
    list-style: none;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: var(--color-accent);
    color: var(--color-white);
    border: none;
    border-radius: 3px;
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
}

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

.section {
    padding: var(--spacing-lg) 0;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.section.revealed {
    opacity: 1;
    transform: translateY(0);
}

.section__title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-secondary);
    text-align: center;
}

.section__subtitle {
    font-size: 1.2rem;
    color: var(--color-accent);
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.hidden {
    display: none !important;
}

/* 
-----------------------------------
  HEADER & NAVIGATION
-----------------------------------
*/

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
    padding: 0 var(--spacing-md);
}

.nav__logo {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-secondary);
}

.nav__menu {
    display: flex;
}

.nav__item {
    margin-left: var(--spacing-md);
}

.nav__link {
    font-weight: 600;
    color: var(--color-text);
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width var(--transition-normal);
}

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

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

.nav__toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    cursor: pointer;
}

.nav__toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: var(--color-secondary);
    transition: all var(--transition-normal);
}

/* 
-----------------------------------
  HERO SECTION
-----------------------------------
*/

.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-secondary);
    background-image: linear-gradient(rgba(26, 38, 57, 0.8), rgba(26, 38, 57, 0.8)), url('https://source.unsplash.com/random/1920x1080?abstract,art');
    background-size: cover;
    background-position: center;
    color: var(--color-white);
    text-align: center;
    padding: 0 var(--spacing-md);
}

.hero__content {
    max-width: 800px;
}

.hero__title {
    font-family: var(--font-heading);
    font-size: 4.5rem;
    margin-bottom: var(--spacing-sm);
    letter-spacing: 1px;
}

.hero__subtitle {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.9;
}

.coming-soon-btn {
    background-color: var(--color-secondary);
    color: var(--color-white);
    cursor: default;
    opacity: 0.9;
    border: 2px solid var(--color-accent);
}

.coming-soon-btn:hover {
    background-color: var(--color-secondary);
    transform: none;
    box-shadow: none;
}

/* 
-----------------------------------
  PORTFOLIO SECTION
-----------------------------------
*/

.portfolio__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.portfolio__item {
    border-radius: 5px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal);
}

.portfolio__item:hover {
    transform: translateY(-5px);
}

.portfolio__image-container {
    position: relative;
    overflow: hidden;
    aspect-ratio: 1 / 1;
}

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

.portfolio__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.portfolio__image-container:hover .portfolio__overlay {
    opacity: 1;
}

.portfolio__image-container:hover .portfolio__image {
    transform: scale(1.05);
}

.portfolio__view-btn {
    background-color: var(--color-white);
    color: var(--color-secondary);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 3px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.portfolio__view-btn:hover {
    background-color: var(--color-accent);
    color: var(--color-white);
}

.portfolio__info {
    padding: var(--spacing-sm);
    background-color: var(--color-white);
}

.portfolio__title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    margin-bottom: 5px;
}

.portfolio__year {
    color: #777;
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
}

.portfolio__likes {
    display: flex;
    align-items: center;
    margin-top: var(--spacing-xs);
}

.like-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-accent);
    font-size: 1.1rem;
    padding: 5px;
    transition: all var(--transition-fast);
}

.like-btn:hover, .like-btn.active {
    color: #d13c3c;
}

.like-count {
    margin-left: 5px;
    font-size: 0.9rem;
}

/* Portfolio Pagination */
.portfolio__pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: var(--spacing-md);
    gap: var(--spacing-md);
}

.pagination-btn {
    background-color: var(--color-white);
    color: var(--color-secondary);
    border: 1px solid var(--color-neutral);
    border-radius: 4px;
    padding: 0.5rem 1rem;
    font-family: var(--font-body);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.pagination-btn:hover:not(:disabled) {
    background-color: var(--color-neutral);
    color: var(--color-secondary);
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination-indicator {
    font-size: 0.9rem;
    color: var(--color-text);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    overflow: auto;
    justify-content: center;
    align-items: center;
}

.modal.active {
    display: flex;
}

.modal__content {
    position: relative;
    background-color: var(--color-white);
    max-width: 90%;
    max-height: 90%;
    border-radius: 5px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    animation: modalOpen 0.4s;
}

.modal__close {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 30px;
    color: var(--color-white);
    cursor: pointer;
    z-index: 10;
    text-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
}

.modal__image {
    max-width: 100%;
    max-height: 80vh;
    display: block;
}

.modal__info {
    padding: var(--spacing-sm);
    background-color: var(--color-white);
}

.modal__title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: 5px;
}

.modal__year {
    color: #777;
}

@keyframes modalOpen {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 
-----------------------------------
  ABOUT SECTION
-----------------------------------
*/

.about__content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-md);
    align-items: start;
}

.about__image {
    position: relative;
    border-radius: 5px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.about__image img {
    width: 100%;
    height: auto;
}

.about__text p {
    margin-bottom: var(--spacing-sm);
}

/* 
-----------------------------------
  REVIEWS SECTION
-----------------------------------
*/

.reviews {
    background-color: var(--color-secondary);
    color: var(--color-white);
}

.reviews .section__title,
.reviews .section__subtitle {
    color: var(--color-white);
}

.reviews__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.review {
    background-color: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-md);
    border-radius: 5px;
    transition: transform var(--transition-normal);
}

.review:hover {
    transform: translateY(-5px);
    background-color: rgba(255, 255, 255, 0.15);
}

.review__title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.review__source {
    color: var(--color-accent);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
}

.review__text {
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
    font-style: italic;
}

.review__link {
    display: inline-block;
    color: var(--color-accent);
    font-weight: 600;
}

.review__link:hover {
    color: var(--color-white);
}

/* 
-----------------------------------
  EXHIBITIONS SECTION
-----------------------------------
*/

.exhibitions__timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.exhibitions__timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: calc(120px + 15px);
    width: 3px;
    height: 100%;
    background-color: var(--color-neutral);
}

.exhibition {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 30px;
    margin-bottom: var(--spacing-md);
    position: relative;
}

.exhibition::before {
    content: '';
    position: absolute;
    top: 15px;
    left: calc(120px + 15px);
    transform: translateX(-50%);
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background-color: var(--color-accent);
    z-index: 1;
}

.exhibition__date {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--color-accent);
    text-align: right;
}

.exhibition__content {
    background-color: var(--color-white);
    padding: var(--spacing-sm);
    border-radius: 5px;
    box-shadow: var(--shadow-sm);
}

.exhibition__title {
    font-family: var(--font-heading);
    margin-bottom: 5px;
}

.exhibition__location {
    font-weight: 600;
    margin-bottom: 5px;
    color: #777;
}

/* 
-----------------------------------
  EVENTS SECTION
-----------------------------------
*/

.events {
    background-color: var(--color-neutral);
}

.events__grid {
    display: grid;
    gap: var(--spacing-md);
}

.event {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--spacing-md);
    background-color: var(--color-white);
    border-radius: 5px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.event__date {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm);
    background-color: var(--color-secondary);
    color: var(--color-white);
    min-width: 90px;
    text-align: center;
}

.event__month {
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
}

.event__day {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
}

.event__details {
    padding: var(--spacing-sm);
}

.event__title {
    font-family: var(--font-heading);
    margin-bottom: var(--spacing-xs);
    font-size: 1.25rem;
}

.event__meta {
    font-size: 0.9rem;
    color: #777;
    margin-bottom: 5px;
}

.event__meta i {
    margin-right: 5px;
    color: var(--color-accent);
}

.event__description {
    margin-top: var(--spacing-xs);
}

/* 
-----------------------------------
  CONTACT SECTION
-----------------------------------
*/

.contact__content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-md);
    align-items: start;
}

.contact__info {
    display: grid;
    gap: var(--spacing-sm);
}

.contact__item {
    display: flex;
    align-items: center;
}

.contact__item i {
    font-size: 1.5rem;
    color: var(--color-accent);
    margin-right: var(--spacing-sm);
}

.contact__form {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: 5px;
    box-shadow: var(--shadow-sm);
}

.form__group {
    margin-bottom: var(--spacing-sm);
}

.form__label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
}

.form__input {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--color-neutral);
    border-radius: 3px;
    font-family: var(--font-body);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form__input:focus {
    outline: none;
    border-color: var(--color-accent);
}

.form__textarea {
    min-height: 150px;
    resize: vertical;
}

.form__submit {
    width: 100%;
    margin-top: var(--spacing-xs);
}

.form__message {
    margin-top: var(--spacing-sm);
    text-align: center;
    font-weight: 600;
}

.form__message.success {
    color: #2ecc71;
}

.form__message.error {
    color: #e74c3c;
}

/* 
-----------------------------------
  FOOTER
-----------------------------------
*/

.footer {
    background-color: var(--color-secondary);
    color: var(--color-white);
    padding: var(--spacing-md) 0;
    position: relative;
}

.footer__content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.footer__logo {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
}

.footer__social {
    display: flex;
    gap: var(--spacing-sm);
}

.social__link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--color-white);
    transition: all var(--transition-normal);
}

.social__link:hover {
    background-color: var(--color-accent);
    color: var(--color-white);
    transform: translateY(-3px);
}

.footer__copyright {
    font-size: 0.9rem;
    opacity: 0.7;
}

.back-to-top {
    position: absolute;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--color-accent);
    color: var(--color-white);
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
}

.back-to-top:hover {
    background-color: var(--color-white);
    color: var(--color-accent);
    transform: translateY(-5px);
}

/* 
-----------------------------------
  RESPONSIVE STYLES
-----------------------------------
*/

@media (max-width: 992px) {
    .about__content,
    .contact__content {
        grid-template-columns: 1fr;
    }

    .about__image {
        max-width: 400px;
        margin: 0 auto var(--spacing-md);
    }

    .section__title {
        font-size: 2rem;
    }

    .hero__title {
        font-size: 3.5rem;
    }
}

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

    .nav__menu {
        position: fixed;
        top: 80px;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: calc(100vh - 80px);
        background-color: var(--color-white);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        transition: right var(--transition-normal);
        box-shadow: var(--shadow-md);
    }

    .nav__menu.active {
        right: 0;
    }

    .nav__item {
        margin: var(--spacing-sm) 0;
    }

    .exhibitions__timeline::before {
        left: 15px;
    }

    .exhibition {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .exhibition::before {
        left: 15px;
    }

    .exhibition__date {
        text-align: left;
        padding-left: 40px;
    }

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

    .event__date {
        flex-direction: row;
        justify-content: flex-start;
        gap: var(--spacing-xs);
    }

    .hero__title {
        font-size: 2.5rem;
    }
    
    .hero__subtitle {
        font-size: 1.2rem;
    }
}

@media (max-width: 576px) {
    .section {
        padding: var(--spacing-md) 0;
    }

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

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

    .footer__content {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
    
    .section__title {
        font-size: 1.75rem;
    }
    
    .section__subtitle {
        font-size: 1rem;
    }
}