/* ------------------- */
        /* RESET & GRUNDLAGEN  */
        /* ------------------- */
        :root {
            --color-background: #F9F9F7; /* Ciepła, złamana biel */
            --color-text: #121212; /* Głęboka, ale nie absolutna czerń */
            --color-accent: #B89552; /* Eleganckie, przygaszone złoto/ochra */
            --color-accent-hover: #A08248;
            --font-main: 'Sora', 'Helvetica Neue', sans-serif;
            --transition-curve: cubic-bezier(0.25, 0.1, 0.25, 1);
            --header-height: 80px;
        }

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

        html {
            font-size: 100%;
            scroll-behavior: smooth;
            scroll-padding-top: var(--header-height); /* Dla płynnego przewijania do sekcji */
        }

        body {
            font-family: var(--font-main);
            background-color: var(--color-background);
            color: var(--color-text);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            line-height: 1.6;
            overflow-x: hidden;
        }
        
        body.mobile-nav-open, body.lightbox-open {
            overflow: hidden;
        }

        /* ------------------- */
        /* STYL GŁÓWNY         */
        /* ------------------- */
        .container {
            width: 90%;
            max-width: 1280px;
            margin: 0 auto;
        }

        h1, h2, h3 {
            font-weight: 600;
            line-height: 1.2;
            letter-spacing: -0.02em;
        }
        
        .fade-in {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.8s var(--transition-curve), transform 0.8s var(--transition-curve);
        }

        .fade-in.is-visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ------------------- */
        /* GÓRNE MENU (HEADER) */
        /* ------------------- */
        .main-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            height: var(--header-height);
            display: flex;
            align-items: center;
            transition: transform 0.4s var(--transition-curve), background-color 0.4s var(--transition-curve), box-shadow 0.4s var(--transition-curve);
        }
        
        .main-header.scrolled {
            background-color: rgba(249, 249, 247, 0.9);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
        }

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

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

        .logo a {
            font-size: 1.1rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            text-decoration: none;
            color: var(--color-text);
        }
        
        .main-nav {
            display: none; /* Ukryte na mobile */
        }

        .main-nav ul {
            list-style: none;
            display: flex;
            gap: 2.5rem;
        }

        .main-nav a {
            text-decoration: none;
            color: var(--color-text);
            font-size: 0.95rem;
            font-weight: 400;
            position: relative;
            padding-bottom: 5px;
        }

        .main-nav a::after {
            content: '';
            position: absolute;
            width: 100%;
            height: 1px;
            bottom: 0;
            left: 0;
            background-color: var(--color-accent);
            transform: scaleX(0);
            transform-origin: bottom right;
            transition: transform 0.4s var(--transition-curve);
        }
        
        .main-nav a:hover::after {
            transform: scaleX(1);
            transform-origin: bottom left;
        }
        
        .mobile-nav-toggle {
            display: block; /* Widoczne na mobile */
            z-index: 1001;
            background: none;
            border: none;
            cursor: pointer;
            padding: 10px;
        }

        .hamburger-icon {
            width: 24px;
            height: 18px;
            position: relative;
        }
        
        .hamburger-icon span {
            display: block;
            position: absolute;
            height: 2px;
            width: 100%;
            background: var(--color-text);
            opacity: 1;
            left: 0;
            transform: rotate(0deg);
            transition: .25s ease-in-out;
        }
        
        .hamburger-icon span:nth-child(1) { top: 0px; }
        .hamburger-icon span:nth-child(2) { top: 8px; }
        .hamburger-icon span:nth-child(3) { top: 16px; }

        .mobile-nav-open .hamburger-icon span:nth-child(1) { top: 8px; transform: rotate(135deg); }
        .mobile-nav-open .hamburger-icon span:nth-child(2) { opacity: 0; left: -60px; }
        .mobile-nav-open .hamburger-icon span:nth-child(3) { top: 8px; transform: rotate(-135deg); }

        /* ------------------- */
        /* MENU MOBILNE (NAKŁADKA) */
        /* ------------------- */
        .mobile-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: var(--color-background);
            display: flex;
            justify-content: center;
            align-items: center;
            transform: translateX(100%);
            transition: transform 0.5s var(--transition-curve);
            z-index: 999;
        }
        
        .mobile-nav.is-open {
            transform: translateX(0);
        }

        .mobile-nav ul {
            list-style: none;
            text-align: center;
        }

        .mobile-nav li {
            margin: 2.5rem 0;
        }

        .mobile-nav a {
            font-size: 2rem;
            font-weight: 600;
            color: var(--color-text);
            text-decoration: none;
        }


        /* ------------------- */
        /* A) SEKCJA HERO      */
        /* ------------------- */
        .hero {
            min-height: 80vh;
            display: flex;
            align-items: center;
            padding: calc(var(--header-height) + 4rem) 0 4rem 0;
        }

        .hero__content {
            max-width: 600px;
        }

        .hero__headline {
            font-size: clamp(2rem, 5vw, 3.2rem);
            font-weight: 700;
            margin-bottom: 2.1rem;
        }

        .hero__subheadline {
            font-size: clamp(1rem, 2vw, 1.15rem);
            font-weight: 300;
            max-width: 80%;
            margin-bottom: 2.8rem;
        }

        .cta-button {
            display: inline-block;
            background-color: var(--color-accent);
            color: white;
            padding: 0.9rem 2.2rem;
            text-decoration: none;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: background-color 0.4s var(--transition-curve), transform 0.4s var(--transition-curve);
            box-shadow: 2px 7px 15px rgba(0,0,0,0.08), -1px 2px 8px rgba(0,0,0,0.05);
        }

        .cta-button:hover, .cta-button:focus {
            background-color: var(--color-accent-hover);
            transform: translateY(-3px);
            box-shadow: 4px 10px 20px rgba(0,0,0,0.1), -2px 4px 12px rgba(0,0,0,0.07);
        }

        /* ------------------------- */
        /* B) SEKCJA ZAUFANIA        */
        /* ------------------------- */
        .trust-section {
            padding: 6rem 0;
            text-align: center;
        }
        
        .trust-section .container {
            max-width: 800px;
        }

        .testimonial__quote-mark {
            font-size: 5rem;
            font-weight: 700;
            color: var(--color-accent);
            line-height: 0.5;
            opacity: 0.5;
        }

        .testimonial__text {
            font-size: clamp(1.3rem, 3vw, 1.8rem);
            font-weight: 300;
            letter-spacing: -0.01em;
            margin: 1rem 0 2rem 0;
        }

        .testimonial__author {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            opacity: 0.8;
        }
        
        .testimonial__author span {
            display: block;
            font-weight: 400;
            font-size: 0.9rem;
            opacity: 0.7;
            margin-top: 0.2rem;
        }
        
        /* ------------------------- */
        /* C) SEKCJA AKCJI (PORTFOLIO) */
        /* ------------------------- */
        .portfolio-section {
            padding: 4rem 0 8rem 0;
        }
        
        .portfolio-section__header {
            margin-bottom: 4rem;
            text-align: center;
        }

        .portfolio-section__header h2 {
            font-size: clamp(1.8rem, 4vw, 2.5rem);
            margin-bottom: 0.5rem;
        }

        .portfolio-section__header p {
            max-width: 500px;
            margin: 0 auto;
            font-weight: 300;
            opacity: 0.9;
        }
        
        .portfolio-grid {
            column-count: 1; /* 1 kolumna na mobile */
            column-gap: 1.5rem;
        }
        
        .portfolio-item {
            margin-bottom: 1.5rem;
            break-inside: avoid;
            position: relative;
            overflow: hidden;
        }
        
        .portfolio-item img {
            width: 100%;
            height: auto;
            display: block;
            transition: opacity 0.6s var(--transition-curve);
        }

        .portfolio-item:hover img {
            opacity: 0.9;
        }

        /* ------------------- */
        /* D) FOOTER           */
        /* ------------------- */
        .footer {
            padding: 5rem 0 2.1rem 0;
            border-top: 1px solid rgba(0,0,0,0.08);
            text-align: center;
        }

        .footer #kontakt {
            margin-bottom: 3rem;
        }

        .footer h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
        }
        .footer p {
             margin-bottom: 1.5rem;
             color: rgba(0,0,0,0.8);
        }

        .footer .contact-link {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-accent);
            text-decoration: none;
        }
        
        .footer__bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.9rem;
            font-weight: 400;
            color: rgba(0,0,0,0.6);
            padding-top: 2rem;
            border-top: 1px solid rgba(0,0,0,0.08);
            margin-top: 4rem;
        }
        
        .footer a {
            color: rgba(0,0,0,0.6);
            text-decoration: none;
            position: relative;
        }
        
        .footer a:not(.contact-link)::after {
            content: '';
            position: absolute;
            width: 100%;
            height: 1px;
            bottom: -2px;
            left: 0;
            background-color: var(--color-accent);
            transform: scaleX(0);
            transform-origin: bottom right;
            transition: transform 0.4s var(--transition-curve);
        }
        
        .footer a:not(.contact-link):hover::after {
            transform: scaleX(1);
            transform-origin: bottom left;
        }

        /* ------------------- */
        /* LIGHTBOX (MODAL)    */
        /* ------------------- */
        .lightbox {
            display: none;
            position: fixed;
            z-index: 2000;
            padding-top: 60px;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            overflow: auto;
            background-color: rgba(249, 249, 247, 0.97); /* ZMIANA KOLORU TŁA */
            animation: fadeIn 0.5s;
        }

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

        .lightbox-content {
            position: relative;
            margin: auto;
            width: 90%;
            max-width: 1200px;
            height: calc(100% - 60px);
            display: flex;
            justify-content: center;
            align-items: center;
        }

        #lightbox-image {
            max-width: 100%;
            max-height: 100%;
            object-fit: contain;
            animation: zoomIn 0.5s;
            transition: opacity 0.2s ease-in-out; /* Animacja znikania/pojawiania */
        }

        @keyframes zoomIn {
            from { transform: scale(0.8); }
            to { transform: scale(1); }
        }

        .lightbox-close {
            position: absolute;
            top: 15px;
            right: 35px;
            color: var(--color-text); /* ZMIANA KOLORU KONTROLEK */
            font-size: 40px;
            font-weight: bold;
            transition: 0.3s;
            cursor: pointer;
        }

        .lightbox-prev, .lightbox-next {
            cursor: pointer;
            position: absolute;
            top: 50%;
            width: auto;
            padding: 16px;
            margin-top: -50px;
            color: var(--color-text); /* ZMIANA KOLORU KONTROLEK */
            font-weight: bold;
            font-size: 20px;
            transition: 0.6s ease;
            user-select: none;
            -webkit-user-select: none;
        }
        
        .lightbox-prev {
            left: 0;
            border-radius: 0 3px 3px 0;
        }

        .lightbox-next {
            right: 0;
            border-radius: 3px 0 0 3px;
        }

        .lightbox-prev:hover,
        .lightbox-next:hover,
        .lightbox-close:hover {
            color: var(--color-accent);
        }

        .lightbox-caption {
            text-align: center;
            color: var(--color-text); /* ZMIANA KOLORU KONTROLEK */
            opacity: 0.8;
            padding: 10px 0;
            height: 30px;
            position: absolute;
            bottom: 15px;
            width: 100%;
            font-size: 0.9rem;
            z-index: 2001;
        }

        /* ------------------- */
        /* RESPONSIVE (Desktop) */
        /* ------------------- */
        @media (min-width: 768px) {
            .mobile-nav-toggle {
                display: none;
            }
            .main-nav {
                display: block;
            }
            
            .hero {
                min-height: 90vh;
                text-align: left;
            }
            
            .hero__content {
                max-width: 750px;
            }

            .portfolio-grid {
                column-count: 3;
            }
            .portfolio-item {
                cursor: pointer;
            }

            .footer {
                text-align: left;
            }
            .footer__bottom {
                text-align: left;
            }
        }

        @media (min-width: 1024px) {
            .hero {
                align-items: center;
            }
        }