/* =====================================================
   RENATA VISNYEI - Interior Design Portfolio
   Minimalista design, Montserrat betűtípus
   ===================================================== */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@300;400;500;600;700&display=swap');

/* CSS Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --color-bg: #404a54;
    --color-text: #ffffff;
    --color-text-muted: rgba(255, 255, 255, 0.7);
    --color-link: #cccccc;
    --color-link-hover: #b3b3b3;
    --color-border: rgba(255, 255, 255, 0.15);
    --color-black: #1a1a1a;
    --color-white: #ffffff;
    
    --font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    --header-height: 80px;
    --container-max: 1400px;
    --container-padding: 24px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 14px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

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

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

ul, ol {
    list-style: none;
}

/* Container */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* =====================================================
   HEADER & NAVIGATION
   ===================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--color-bg);
    z-index: 1000;
    border-bottom: 1px solid var(--color-border);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--color-text);
}

.nav {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav__link {
    font-size: 11px;
    font-weight: 400;
    letter-spacing: 1px;
    text-transform: uppercase;
    position: relative;
    color: var(--color-text);
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-text);
    transition: width var(--transition-normal);
}

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

.nav__link:hover {
    opacity: 1;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 28px;
    height: 28px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-text);
    transition: all var(--transition-normal);
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* =====================================================
   MAIN CONTENT
   ===================================================== */
main {
    padding-top: var(--header-height);
    flex: 1;
}

/* Page Header */
.page-header {
    padding: 60px 0 40px;
    text-align: center;
}

.page-header__title {
    font-size: 13px;
    font-weight: 400;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--color-text);
}

/* =====================================================
   HERO SECTION (Home)
   ===================================================== */
.hero {
    height: calc(100vh - var(--header-height));
    position: relative;
    overflow: hidden;
}

.hero .swiper {
    width: 100%;
    height: 100%;
}

.hero .swiper-slide {
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero .swiper-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero .swiper-pagination-bullet {
    width: 10px;
    height: 10px;
    background: var(--color-white);
    opacity: 0.5;
}

.hero .swiper-pagination-bullet-active {
    opacity: 1;
}

/* =====================================================
   PROJECT GRID (Megvalósult otthonok)
   ===================================================== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 24px;
    padding: 40px 0 80px;
}

.project-card {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4/3;
    background: rgba(255, 255, 255, 0.1);
}

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

.project-card:hover .project-card__image {
    transform: scale(1.05);
}

.project-card__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 50%);
    display: flex;
    align-items: flex-end;
    padding: 24px;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

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

.project-card__info {
    color: var(--color-white);
}

.project-card__title {
    font-size: 12px;
    font-weight: 400;
    letter-spacing: 0px;
    margin-bottom: 4px;
}

.project-card__meta {
    font-size: 11px;
    font-weight: 300;
    opacity: 0.8;
}

/* =====================================================
   PROJECT DETAIL PAGE
   ===================================================== */
.project-detail {
    padding: 40px 0 80px;
}

.project-detail__header {
    text-align: center;
    margin-bottom: 40px;
}

.project-detail__title {
    font-size: 18px;
    font-weight: 400;
    letter-spacing: 1px;
    margin-bottom: 8px;
    color: var(--color-text);
}

.project-detail__meta {
    font-size: 12px;
    color: var(--color-text-muted);
}

/* Project Gallery Swiper */
.project-gallery {
    max-width: 1000px;
    margin: 0 auto;
}

.project-gallery .swiper-slide {
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-gallery .swiper-slide img {
    max-height: 70vh;
    width: auto;
    max-width: 100%;
    object-fit: contain;
}

.project-gallery .swiper-button-next,
.project-gallery .swiper-button-prev {
    color: var(--color-white);
    width: 44px;
    height: 44px;
    background: rgba(0, 0, 0, 0.55);
    border-radius: 50%;
    backdrop-filter: blur(2px);
}

.project-gallery .swiper-button-next::after,
.project-gallery .swiper-button-prev::after {
    font-size: 20px;
}

.project-gallery .swiper-pagination {
    position: relative;
    margin-top: 24px;
}

.project-gallery .swiper-pagination-bullet {
    width: 8px;
    height: 8px;
    background: var(--color-text-muted);
    opacity: 1;
}

.project-gallery .swiper-pagination-bullet-active {
    background: var(--color-text);
}

/* Back Link */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 11px;
    font-weight: 400;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 40px;
    color: var(--color-text);
}

.back-link::before {
    content: '←';
}

/* =====================================================
   ABOUT PAGE (Bemutatkozás)
   ===================================================== */
.about-content {
    max-width: 1000px;
    margin: 0 auto;
    padding: 40px 0 80px;
    display: flex;
    gap: 80px;
    align-items: flex-start;
}

.about-content__image {
    flex: 0 0 360px;
}

.about-content__image img {
    width: 100%;
    height: auto;
    display: block;
}

.about-content__text {
    flex: 1;
}

.about-content__text p {
    font-size: 14px;
    line-height: 1.8;
    color: var(--color-text);
    margin-bottom: 24px;
}

.about-content__text p:last-child {
    margin-bottom: 0;
}

/* =====================================================
   PUBLICATIONS (Publikációk)
   ===================================================== */
.publications-list {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 0 80px;
}

.publication-category {
    margin-bottom: 48px;
}

.publication-category__title {
    font-size: 13px;
    font-weight: 400;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text);
}

.publication-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid var(--color-border);
    transition: background var(--transition-fast);
}

.publication-item:hover {
    background: rgba(255, 255, 255, 0.05);
    margin: 0 -16px;
    padding: 16px;
}

.publication-item__icon {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.publication-item__icon svg {
    width: 20px;
    height: 20px;
    fill: var(--color-text);
}

.publication-item__icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.publication-item__title {
    font-size: 14px;
    font-weight: 400;
    color: var(--color-text);
}

.publication-item__meta {
    font-size: 12px;
    color: var(--color-text-muted);
    margin-top: 2px;
}

/* Sub-categories grid */
.subcategories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
    padding: 40px 0 80px;
}

.subcategory-card {
    background: rgba(255, 255, 255, 0.05);
    padding: 32px;
    text-align: center;
    transition: background var(--transition-fast);
}

.subcategory-card:hover {
    background: rgba(255, 255, 255, 0.1);
}

.subcategory-card__title {
    font-size: 13px;
    font-weight: 400;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--color-text);
}

/* =====================================================
   PLANS & DRAWINGS (Tervek, rajzok)
   ===================================================== */
.plans-section {
    padding: 40px 0;
}

.plans-section__title {
    font-size: 12px;
    font-weight: 400;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 24px;
    color: var(--color-text-muted);
}

/* Plans Swiper */
.plans-swiper {
    position: relative;
    overflow: hidden;
    padding: 0 50px;
    margin-bottom: 20px;
    max-width: 980px;
    margin-left: auto;
    margin-right: auto;
}

.plans-swiper .swiper-slide {
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
}

.plans-swiper .swiper-slide img {
    width: auto;
    max-width: 100%;
    max-height: 56vh;
    object-fit: contain;
    display: block;
    margin: 0 auto;
}

.plans-swiper .swiper-button-next,
.plans-swiper .swiper-button-prev {
    color: var(--color-white);
    width: 44px;
    height: 44px;
    background: rgba(0, 0, 0, 0.55);
    border-radius: 50%;
    backdrop-filter: blur(2px);
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.plans-swiper .swiper-button-next:hover,
.plans-swiper .swiper-button-prev:hover {
    opacity: 1;
}

.plans-swiper .swiper-button-next::after,
.plans-swiper .swiper-button-prev::after {
    font-size: 24px;
}

/* Legacy grid - kept for compatibility */
.plans-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 16px;
    margin-bottom: 60px;
}

.plan-item {
    aspect-ratio: 4/3;
    overflow: hidden;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.05);
}

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

.plan-item:hover img {
    transform: scale(1.05);
}

/* =====================================================
   CONTACT PAGE (Kapcsolat)
   ===================================================== */
.contact-content {
    max-width: 600px;
    margin: 0 auto;
    padding: 60px 0 80px;
    text-align: center;
}

.contact-image {
    max-width: 400px;
    margin: 0 auto 40px;
}

.contact-image img {
    width: 100%;
    height: auto;
    display: block;
}

.contact-name {
    font-size: 16px;
    font-weight: 400;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 32px;
    color: var(--color-text);
}

.contact-info {
    font-size: 14px;
    line-height: 2;
    color: var(--color-text);
}

.contact-info a {
    border-bottom: 1px solid var(--color-border);
}

.contact-info a:hover {
    opacity: 1;
    border-color: var(--color-text);
}

/* =====================================================
   LIGHTBOX
   ===================================================== */
.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.95);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.lightbox.active {
    display: flex;
    opacity: 1;
}

.lightbox__image {
    max-width: 90vw;
    max-height: 90vh;
    object-fit: contain;
}

.lightbox__close {
    position: absolute;
    top: 24px;
    right: 24px;
    width: 44px;
    height: 44px;
    background: none;
    border: none;
    color: var(--color-white);
    font-size: 32px;
    cursor: pointer;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.lightbox__close:hover {
    opacity: 1;
}

.lightbox__nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    background: none;
    border: none;
    color: var(--color-white);
    font-size: 24px;
    cursor: pointer;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.lightbox__nav:hover {
    opacity: 1;
}

.lightbox__nav--prev {
    left: 24px;
}

.lightbox__nav--next {
    right: 24px;
}

/* =====================================================
   SUBCATEGORIES GRID (Egyéb publikációk)
   ===================================================== */
.subcategories-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    padding: 40px 0 80px;
    max-width: 1000px;
    margin: 0 auto;
}

.subcategory-card {
    display: block;
    text-align: center;
    transition: transform var(--transition-normal);
}

.subcategory-card:hover {
    transform: translateY(-4px);
}

.subcategory-card__image {
    aspect-ratio: 4/3;
    overflow: hidden;
    margin-bottom: 16px;
    background: rgba(255, 255, 255, 0.1);
}

.subcategory-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.subcategory-card__title {
    font-size: 12px;
    font-weight: 400;
    letter-spacing: 1px;
    color: var(--color-text);
}

/* =====================================================
   ALAPRAJZOK GRID
   ===================================================== */
.page-intro {
    text-align: center;
    font-size: 14px;
    color: var(--color-text-muted);
    margin-bottom: 40px;
}

.alaprajzok-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    padding: 0 0 80px;
    max-width: 1200px;
    margin: 0 auto;
}

.alaprajz-item {
    background: rgba(255, 255, 255, 0.05);
}

.alaprajz-item img {
    width: 100%;
    height: auto;
    display: block;
}

/* =====================================================
   PDF GRID
   ===================================================== */
.pdf-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    padding: 0 0 80px;
    max-width: 1000px;
    margin: 0 auto;
}

.pdf-card {
    display: block;
    padding: 32px 24px;
    background: rgba(255, 255, 255, 0.05);
    text-align: center;
    transition: background var(--transition-fast);
}

.pdf-card:hover {
    background: rgba(255, 255, 255, 0.1);
}

.pdf-card__icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.pdf-card__title {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 8px;
}

.pdf-card__meta {
    font-size: 12px;
    color: var(--color-text-muted);
}

/* =====================================================
   PUBLICATION GRID (with images)
   ===================================================== */
.publication-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    padding: 0 0 80px;
    max-width: 1000px;
    margin: 0 auto;
}

.publication-card {
    display: block;
    text-align: center;
    transition: transform var(--transition-normal);
}

.publication-card:hover {
    transform: translateY(-4px);
}

.publication-card__image {
    margin-bottom: 12px;
    background: rgba(255, 255, 255, 0.05);
}

.publication-card__image img {
    width: 100%;
    height: auto;
    display: block;
}

.publication-card__title {
    font-size: 12px;
    color: var(--color-text);
    line-height: 1.4;
}

/* =====================================================
   FOOTER
   ===================================================== */
.footer {
    padding: 40px 0;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.footer__text {
    font-size: 11px;
    color: var(--color-text-muted);
    letter-spacing: 1px;
}

/* =====================================================
   RESPONSIVE DESIGN
   ===================================================== */
@media (max-width: 1024px) {
    :root {
        --container-padding: 20px;
    }
    
    .nav {
        gap: 24px;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 70px;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-bg);
        flex-direction: column;
        justify-content: center;
        gap: 32px;
        transform: translateX(100%);
        transition: transform var(--transition-normal);
    }
    
    .nav.active {
        transform: translateX(0);
    }
    
    .nav__link {
        font-size: 14px;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .project-card__overlay {
        opacity: 1;
        background: linear-gradient(to top, rgba(0,0,0,0.6) 0%, transparent 60%);
    }
    
    .plans-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .subcategories-grid {
        grid-template-columns: 1fr;
    }
    
    .alaprajzok-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    
    .pdf-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    
    .publication-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .plans-swiper {
        max-width: 100%;
        padding: 0 40px;
    }

    .plans-swiper .swiper-slide img {
        max-height: 46vh;
    }
    
    .page-header {
        padding: 40px 0 24px;
    }
    
    .project-detail__title {
        font-size: 20px;
    }
    
    .about-content {
        flex-direction: column;
        gap: 40px;
    }
    
    .about-content__image {
        flex: 0 0 auto;
        max-width: 320px;
        margin: 0 auto;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 14px;
        letter-spacing: 2px;
    }
    
    .plans-grid {
        grid-template-columns: 1fr;
    }
    
    .alaprajzok-grid {
        grid-template-columns: 1fr;
    }
    
    .pdf-grid {
        grid-template-columns: 1fr;
    }
    
    .publication-grid {
        grid-template-columns: 1fr;
    }
    
    .about-content__text p {
        font-size: 15px;
    }
    
    .contact-name {
        font-size: 16px;
    }

    .plans-swiper {
        padding: 0 34px;
    }

    .plans-swiper .swiper-slide img {
        max-height: 40vh;
    }
}

/* =====================================================
   UTILITIES
   ===================================================== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

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

.mb-0 {
    margin-bottom: 0;
}

/* Lazy loading placeholder */
.lazy {
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.lazy.loaded {
    opacity: 1;
}