/* ===========================================
   CSS Variables
   =========================================== */
:root {
    /* Colors - Russian Traditional Palette */
    --color-primary: #c41e3a;
    --color-primary-dark: #9d1830;
    --color-primary-light: #d94356;
    --color-secondary: #0039a6;
    --color-secondary-dark: #002b7a;
    --color-text: #2c3e50;
    --color-text-light: #6c7a89;
    --color-bg: #ffffff;
    --color-bg-light: #f8f9fa;
    --color-bg-dark: #1a252f;
    --color-border: #e1e8ed;
    --color-gold: #d4af37;

    /* Typography */
    --font-primary: 'Georgia', serif;
    --font-secondary: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Container */
    --container-mobile: calc(100% - 40px);
    --container-tablet: 720px;
    --container-desktop: 960px;
    --container-wide: 1140px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* 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, 0.15);
    --shadow-xl: 0 16px 32px rgba(0, 0, 0, 0.2);
}

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

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

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

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul {
    list-style: none;
}

/* ===========================================
   Utility Classes
   =========================================== */
.container {
    width: 90%;
    max-width: var(--container-wide);
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: var(--spacing-xl) 0;
}

.section--dark {
    background-color: var(--color-bg-dark);
    color: var(--color-bg);
}

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

.section-title {
    font-family: var(--font-primary);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: inherit;
}

.section--dark .section-title {
    color: var(--color-bg);
}

.section-divider {
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-gold));
    margin: 0 auto var(--spacing-sm);
    border-radius: 2px;
}

.section-description {
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

.section--dark .section-description {
    color: rgba(255, 255, 255, 0.8);
}

/* ===========================================
   Navigation
   =========================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    z-index: 1000;
    transition: transform var(--transition-normal);
}

.nav.nav--hidden {
    transform: translateY(-100%);
}

.nav__container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.nav__brand {
    display: flex;
    flex-direction: column;
}

.nav__title {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.nav__subtitle {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: 8px;
}

.nav__toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--color-text);
    border-radius: 3px;
    transition: all var(--transition-fast);
}

.nav__menu {
    display: flex;
    gap: var(--spacing-md);
}

.nav__link {
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: all var(--transition-fast);
}

.nav__link:hover {
    color: var(--color-primary);
    background-color: rgba(196, 30, 58, 0.1);
}

.nav__link.nav__link--active {
    color: var(--color-primary);
    font-weight: 600;
}

/* ===========================================
   Hero Section
   =========================================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #c41e3a 0%, #0039a6 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('https://lh3.googleusercontent.com/gps-cs-s/AC9h4nqDNUWq3tTBhgk2XqxQrudhVk2ee8ZHo8aPi-dss6LtrEPvS3RUVf4g_zmcz-7XhM3oNlVJBwDR34BDPqjEGsKk2Zbk1PJEYYXpj71re7zy7ZNd1r3MzMzJTIXbj6R3o9A2VWkgEuriYoej=w1920-h1080-k-no');
    background-size: cover;
    background-position: center;
    opacity: 0.3;
    animation: heroZoom 20s ease-in-out infinite alternate;
}

@keyframes heroZoom {
    0% { transform: scale(1); }
    100% { transform: scale(1.1); }
}

.hero__overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(196, 30, 58, 0.7) 0%, rgba(0, 57, 166, 0.7) 100%);
}

.hero__content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: white;
    padding: 2rem;
    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-primary);
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.hero__subtitle {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    margin-bottom: var(--spacing-md);
    font-weight: 300;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero__rating {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.stars {
    display: flex;
    gap: 4px;
}

.star {
    color: var(--color-gold);
    font-size: 1.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero__rating-text {
    font-size: 1.125rem;
    font-weight: 500;
}

.hero__buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* ===========================================
   Buttons
   =========================================== */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 50px;
    transition: all var(--transition-normal);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn--primary {
    background-color: var(--color-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

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

.btn--secondary {
    background-color: transparent;
    color: white;
    border: 2px solid white;
}

.btn--secondary:hover {
    background-color: white;
    color: var(--color-primary);
}

/* ===========================================
   About Section
   =========================================== */
.about__content {
    max-width: 900px;
    margin: 0 auto;
}

.about__heading {
    font-family: var(--font-primary);
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.about__description {
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-light);
}

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

.highlight {
    text-align: center;
    padding: var(--spacing-md);
    background-color: var(--color-bg-light);
    border-radius: 12px;
    transition: all var(--transition-normal);
}

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

.highlight__icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    display: block;
}

.highlight__title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--color-primary);
}

.highlight__text {
    color: var(--color-text-light);
}

/* ===========================================
   Features Section
   =========================================== */
.features__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.feature-card {
    background-color: rgba(255, 255, 255, 0.05);
    padding: var(--spacing-md);
    border-radius: 12px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-normal);
}

.feature-card:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-card__icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.feature-card__title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--color-gold);
}

.feature-card__text {
    color: rgba(255, 255, 255, 0.8);
}

.amenities {
    background-color: rgba(255, 255, 255, 0.05);
    padding: var(--spacing-md);
    border-radius: 12px;
    margin-top: var(--spacing-lg);
}

.amenities__title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    text-align: center;
    color: var(--color-gold);
}

.amenities__list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-sm);
}

.amenity-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs);
}

.amenity-icon {
    color: var(--color-gold);
    font-weight: 700;
    font-size: 1.25rem;
}

.amenity-text {
    color: rgba(255, 255, 255, 0.9);
}

/* ===========================================
   Gallery Section
   =========================================== */
.gallery__filters {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.75rem 1.5rem;
    background-color: var(--color-bg-light);
    border: 2px solid var(--color-border);
    border-radius: 50px;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    background-color: var(--color-primary-light);
    color: white;
    border-color: var(--color-primary-light);
}

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

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

.gallery__item {
    position: relative;
    aspect-ratio: 4/3;
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.gallery__item:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-xl);
}

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

.gallery__item:hover .gallery__image {
    transform: scale(1.1);
}

.gallery__overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    padding: var(--spacing-sm);
    color: white;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.gallery__item:hover .gallery__overlay {
    opacity: 1;
}

.gallery__category {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ===========================================
   Reviews Section
   =========================================== */
.reviews__summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    background-color: rgba(255, 255, 255, 0.05);
    padding: var(--spacing-md);
    border-radius: 12px;
}

.rating-summary {
    text-align: center;
}

.rating-summary__score {
    font-size: 4rem;
    font-weight: 700;
    color: var(--color-gold);
    line-height: 1;
}

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

.rating-summary__text {
    color: rgba(255, 255, 255, 0.8);
}

.rating-distribution {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.rating-bar {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.rating-bar__label {
    min-width: 40px;
    color: rgba(255, 255, 255, 0.8);
}

.rating-bar__track {
    flex: 1;
    height: 8px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    overflow: hidden;
}

.rating-bar__fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-gold), var(--color-primary));
    transition: width var(--transition-slow);
}

.rating-bar__count {
    min-width: 30px;
    text-align: right;
    color: rgba(255, 255, 255, 0.8);
}

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

.review-card {
    background-color: rgba(255, 255, 255, 0.05);
    padding: var(--spacing-md);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.review-card__header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-sm);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.review-card__info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.review-card__badge {
    background-color: var(--color-gold);
    color: var(--color-bg-dark);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
}

.review-card__date {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
}

.review-card__rating {
    display: flex;
    gap: 4px;
}

.review-card__text {
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
    color: rgba(255, 255, 255, 0.9);
}

.review-card__details {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.review-detail {
    display: flex;
    flex-direction: column;
}

.review-detail__label {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
}

.review-detail__value {
    font-weight: 600;
    color: var(--color-gold);
}

.review-card__images {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.review-image {
    aspect-ratio: 1;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.review-image:hover {
    transform: scale(1.05);
}

.review-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ===========================================
   Contact Section
   =========================================== */
.contact__content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.contact__info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact__card {
    background-color: var(--color-bg-light);
    padding: var(--spacing-md);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

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

.contact__icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    display: block;
}

.contact__title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.contact__text {
    color: var(--color-text-light);
    line-height: 1.8;
}

.contact__note {
    margin-top: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--color-text-light);
    font-style: italic;
}

.contact__map {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.map-placeholder {
    width: 100%;
    height: 400px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.map-info {
    background-color: var(--color-bg-light);
    padding: var(--spacing-md);
    border-radius: 12px;
}

.map-info__text {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
    color: var(--color-text-light);
}

/* ===========================================
   Footer
   =========================================== */
.footer {
    background-color: var(--color-bg-dark);
    color: rgba(255, 255, 255, 0.9);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer__content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer__title {
    font-family: var(--font-primary);
    font-size: 1.75rem;
    color: var(--color-primary-light);
    margin-bottom: var(--spacing-xs);
}

.footer__subtitle {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: var(--spacing-sm);
}

.footer__text {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
}

.footer__heading {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--color-gold);
}

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

.footer__link {
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

.footer__link:hover {
    color: var(--color-primary-light);
}

.footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-md);
    text-align: center;
}

.footer__copyright {
    margin-bottom: var(--spacing-xs);
    color: rgba(255, 255, 255, 0.7);
}

.footer__note {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
}

/* ===========================================
   Lightbox
   =========================================== */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.95);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.lightbox.lightbox--active {
    display: flex;
}

.lightbox__close,
.lightbox__prev,
.lightbox__next {
    position: absolute;
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    border: none;
    font-size: 2rem;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lightbox__close:hover,
.lightbox__prev:hover,
.lightbox__next:hover {
    background-color: rgba(255, 255, 255, 0.3);
}

.lightbox__close {
    top: 20px;
    right: 20px;
}

.lightbox__prev {
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
}

.lightbox__next {
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
}

.lightbox__image {
    max-width: 90%;
    max-height: 80vh;
    border-radius: 8px;
    box-shadow: var(--shadow-xl);
}

.lightbox__caption {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 8px;
    max-width: 80%;
    text-align: center;
}

/* ===========================================
   Animations
   =========================================== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.animate-on-scroll.animate-on-scroll--visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===========================================
   Media Queries
   =========================================== */

/* Tablet (768px - 1023px) */
@media (max-width: 1023px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }

    .nav__menu {
        gap: var(--spacing-sm);
    }

    .hero__buttons {
        flex-direction: column;
        align-items: center;
    }
}

/* Mobile (up to 767px) */
@media (max-width: 767px) {
    :root {
        --spacing-md: 1.5rem;
        --spacing-lg: 2.5rem;
        --spacing-xl: 3rem;
    }

    .nav__toggle {
        display: flex;
    }

    .nav__menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: white;
        flex-direction: column;
        gap: 0;
        box-shadow: var(--shadow-lg);
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-normal);
    }

    .nav__menu.nav__menu--active {
        max-height: 400px;
    }

    .nav__item {
        border-bottom: 1px solid var(--color-border);
    }

    .nav__link {
        display: block;
        padding: 1rem;
    }

    .hero {
        min-height: 500px;
    }

    .section {
        padding: var(--spacing-lg) 0;
    }

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

    .lightbox__prev,
    .lightbox__next {
        width: 40px;
        height: 40px;
        font-size: 1.5rem;
    }

    .lightbox__image {
        max-width: 95%;
    }
}

/* Small mobile (up to 479px) */
@media (max-width: 479px) {
    .container {
        padding: 0 15px;
    }

    .btn {
        padding: 0.875rem 1.5rem;
        font-size: 0.875rem;
    }

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

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

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