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

:root {
    --primary: #c49a52;
    --primary-dark: #a97d32;
    --background: #f8f7f5;
    --white: #ffffff;
    --text: #202020;
    --text-light: #6d6a65;
    --border: #e9e5de;
    --shadow: 0 15px 45px rgba(0, 0, 0, .08);
    --shadow-hover: 0 25px 60px rgba(0, 0, 0, .14);
    --radius: 20px;
    --transition: .35s ease;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 90px;
}

body {
    font-family: "Manrope", sans-serif;
    background: var(--background);
    color: var(--text);
    line-height: 1.7;
    overflow-x: hidden;
}

body.menu-open,
body.lightbox-open {
    overflow: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
}

button {
    font-family: inherit;
}

.container {
    width: min(92%, 1280px);
    margin: 0 auto;
    padding: 0 20px;
}

/* PRELOADER */
.preloader {
    position: fixed;
    inset: 0;
    z-index: 10000;
    background: #1c1c1b;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity .7s ease, visibility .7s ease;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.preloader-content {
    text-align: center;
    color: white;
    animation: preloaderAppear 1s ease both;
}

.preloader-logo {
    font-size: clamp(32px, 5vw, 58px);
    font-weight: 800;
    letter-spacing: -.03em;
}

.preloader-line {
    width: 70px;
    height: 3px;
    background: var(--primary);
    margin: 18px auto 12px;
    transform-origin: center;
    animation: preloaderLine 1s ease both;
}

.preloader-subtitle {
    color: rgba(255,255,255,.65);
    font-size: 13px;
    letter-spacing: .15em;
    text-transform: uppercase;
}

@keyframes preloaderAppear {
    from { opacity: 0; transform: translateY(18px); }
    to { opacity: 1; transform: none; }
}

@keyframes preloaderLine {
    from { transform: scaleX(0); }
    to { transform: scaleX(1); }
}

/* HEADER */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255,255,255,.78);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(255,255,255,.45);
    transition: height .35s ease, box-shadow .35s ease, background .35s ease;
}

.header.scrolled {
    background: rgba(255,255,255,.94);
    box-shadow: 0 8px 30px rgba(0,0,0,.08);
}

.header-container {
    height: 82px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: height .35s ease;
}

.header.scrolled .header-container {
    height: 66px;
}

.logo {
    font-size: 27px;
    font-weight: 800;
    letter-spacing: -.03em;
    transition: .35s ease;
}

.header.scrolled .logo {
    font-size: 23px;
}

.nav-menu {
    display: flex;
    gap: 40px;
}

.nav-link {
    position: relative;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    transition: var(--transition);
}

.nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -9px;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-dark);
}

.nav-link.active::after,
.nav-link:hover::after {
    width: 100%;
}

.burger {
    display: none;
    width: 44px;
    height: 44px;
    border: 0;
    background: transparent;
    cursor: pointer;
    padding: 9px;
}

.burger span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--text);
    margin: 6px 0;
    transition: .3s ease;
}

.burger.active span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.burger.active span:nth-child(2) { opacity: 0; }
.burger.active span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* HERO */
#hero {
    min-height: 100vh;
    position: relative;
    background:
        linear-gradient(90deg, rgba(12,12,12,.78), rgba(12,12,12,.38)),
        url("../images/work5.jpg");
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    isolation: isolate;
}

#hero::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(0deg, rgba(0,0,0,.45), transparent 45%);
    z-index: -1;
}

.hero-overlay {
    width: 100%;
    padding: 145px 0 70px;
}

.hero-content {
    max-width: 880px;
    color: white;
}

.hero-kicker,
.section-kicker {
    display: inline-block;
    color: var(--primary);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .16em;
    text-transform: uppercase;
    margin-bottom: 18px;
}

.hero-kicker {
    color: rgba(255,255,255,.8);
}

.hero-content h1 {
    font-size: clamp(48px, 6.5vw, 86px);
    line-height: 1.02;
    letter-spacing: -.055em;
    margin-bottom: 28px;
    font-weight: 800;
}

.hero-content h1 span {
    color: var(--primary);
}

.hero-text {
    max-width: 690px;
    font-size: clamp(17px, 2vw, 22px);
    line-height: 1.65;
    color: rgba(255,255,255,.88);
    margin-bottom: 38px;
}

.hero-button {
    display: inline-flex;
    align-items: center;
    gap: 18px;
    padding: 18px 31px;
    background: var(--primary);
    color: white;
    border-radius: 60px;
    font-size: 15px;
    font-weight: 800;
    box-shadow: 0 15px 35px rgba(0,0,0,.2);
    transition: var(--transition);
}

.hero-button::after {
    content: "→";
    font-size: 20px;
    transition: .3s ease;
}

.hero-button:hover {
    transform: translateY(-4px);
    background: var(--primary-dark);
}

.hero-button:hover::after {
    transform: translateX(6px);
}

.hero-stats {
    margin-top: 72px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.hero-stat {
    min-height: 132px;
    background: rgba(255,255,255,.1);
    backdrop-filter: blur(13px);
    -webkit-backdrop-filter: blur(13px);
    border: 1px solid rgba(255,255,255,.17);
    border-radius: 18px;
    padding: 24px 16px;
    text-align: center;
    transition: var(--transition);
}

.hero-stat:hover {
    transform: translateY(-6px);
    background: rgba(255,255,255,.16);
}

.hero-stat .number {
    height: 48px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 12px;
    font-size: 34px;
    color: white;
    font-weight: 800;
}

.hero-stat .label {
    color: rgba(255,255,255,.9);
    font-size: 14px;
    line-height: 1.45;
}

.hero-stat i {
    font-size: 28px;
}

/* SECTIONS */
section {
    position: relative;
}

#advantages,
#services,
#about,
#gallery,
#contacts {
    padding: 115px 0;
}

#advantages { background: #f5f4f1; }
#services { background: #fff; }
#about { background: #f5f4f1; }
#gallery { background: #fff; }
#contacts { background: #f5f4f1; }

.section-heading {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 58px;
}

.section-title {
    font-size: clamp(36px, 4.2vw, 54px);
    line-height: 1.1;
    letter-spacing: -.045em;
    font-weight: 800;
    margin-bottom: 17px;
}

.section-heading > p {
    color: var(--text-light);
    font-size: 17px;
}

.section-title::after {
    content: "";
    display: block;
    width: 70px;
    height: 3px;
    background: var(--primary);
    margin: 20px auto 0;
    border-radius: 10px;
}

/* REVEAL */
.reveal {
    opacity: 0;
    transform: translateY(35px);
    transition: opacity .8s ease, transform .8s cubic-bezier(.2,.7,.2,1);
}

.reveal.visible {
    opacity: 1;
    transform: none;
}

.advantages-grid .reveal:nth-child(2),
.services-grid .reveal:nth-child(2),
.contacts-grid .reveal:nth-child(2),
.gallery-grid .reveal:nth-child(2) { transition-delay: .08s; }

.advantages-grid .reveal:nth-child(3),
.services-grid .reveal:nth-child(3),
.contacts-grid .reveal:nth-child(3),
.gallery-grid .reveal:nth-child(3) { transition-delay: .16s; }

.advantages-grid .reveal:nth-child(4),
.services-grid .reveal:nth-child(4),
.contacts-grid .reveal:nth-child(4),
.gallery-grid .reveal:nth-child(4) { transition-delay: .24s; }

/* ADVANTAGES */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
}

.advantage-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 38px 27px;
    text-align: center;
    box-shadow: 0 8px 30px rgba(0,0,0,.045);
    transition: var(--transition);
}

.advantage-card:hover {
    transform: translateY(-9px);
    box-shadow: var(--shadow-hover);
}

.advantage-icon {
    width: 65px;
    height: 65px;
    margin: 0 auto 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 18px;
    background: rgba(196,154,82,.12);
    color: var(--primary-dark);
    font-size: 25px;
}

.advantage-card h3 {
    font-size: 21px;
    margin-bottom: 13px;
}

.advantage-card p {
    color: var(--text-light);
    font-size: 15px;
}

/* SERVICES */
.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.service-card {
    min-height: 275px;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 30px;
    background: white;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: rgba(196,154,82,.65);
    box-shadow: var(--shadow-hover);
}

.service-icon {
    width: 54px;
    height: 54px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 15px;
    background: #f5f0e7;
    color: var(--primary-dark);
    font-size: 21px;
    margin-bottom: 22px;
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background: var(--primary);
    color: white;
}

.service-card h3 {
    font-size: 20px;
    line-height: 1.3;
    margin-bottom: 13px;
}

.service-card p {
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.7;
}

.service-number {
    position: absolute;
    right: 22px;
    bottom: 13px;
    color: #eee9e0;
    font-size: 48px;
    font-weight: 800;
    line-height: 1;
}

/* ABOUT */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 75px;
    align-items: center;
}

.about-images img {
    width: 100%;
    border-radius: 18px;
    box-shadow: 0 15px 40px rgba(0,0,0,.11);
}

.book-wrap {
    position: relative;
}

.book-wrap::after {
    content: "";
    position: absolute;
    inset: 14px -14px -14px 14px;
    border: 1px solid rgba(196,154,82,.5);
    border-radius: 18px;
    z-index: -1;
}

.cups {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
    margin-top: 20px;
}

.about-label {
    display: block;
    color: var(--primary-dark);
    font-size: 14px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .13em;
    margin-bottom: 8px;
}

.about-text h3 {
    font-size: clamp(34px, 4vw, 48px);
    line-height: 1.08;
    letter-spacing: -.04em;
    margin-bottom: 25px;
}

.about-text p {
    margin-bottom: 18px;
    color: #5f5c57;
    font-size: 16px;
    line-height: 1.9;
}

.about-text strong {
    color: var(--text);
}

.about-features {
    margin-top: 30px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.feature {
    display: flex;
    align-items: center;
    gap: 13px;
    font-size: 15px;
    font-weight: 700;
}

.feature i {
    flex: 0 0 40px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--primary);
    color: white;
}

/* GALLERY */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 17px;
}

.gallery-grid img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    border-radius: 15px;
    cursor: pointer;
    transition: .45s ease;
    box-shadow: 0 7px 20px rgba(0,0,0,.07);
}

.gallery-grid img:hover {
    transform: scale(1.035);
    box-shadow: 0 18px 40px rgba(0,0,0,.16);
}

/* CONTACTS */
.contacts-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.contact-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 38px 24px;
    text-align: center;
    box-shadow: 0 8px 30px rgba(0,0,0,.045);
    transition: var(--transition);
}

.contact-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(196,154,82,.6);
}

.contact-card i {
    width: 66px;
    height: 66px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 19px;
    border-radius: 18px;
    background: #f5f0e7;
    color: var(--primary-dark);
    font-size: 27px;
}

.contact-card h3 {
    font-size: 21px;
    margin-bottom: 8px;
}

.contact-card span {
    color: var(--text-light);
    font-size: 14px;
    font-weight: 600;
    word-break: break-word;
}

/* FOOTER */
footer {
    background: #1d1d1c;
    color: white;
    padding: 45px 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 40px;
    flex-wrap: wrap;
}

.footer-content h3 {
    font-size: 25px;
    margin-bottom: 7px;
}

.footer-content p {
    color: #bdbbb7;
    font-size: 14px;
}

/* BACK TO TOP */
.back-to-top {
    position: fixed;
    right: 27px;
    bottom: 27px;
    z-index: 900;
    width: 52px;
    height: 52px;
    border: 0;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    cursor: pointer;
    box-shadow: 0 12px 30px rgba(0,0,0,.18);
    opacity: 0;
    visibility: hidden;
    transform: translateY(15px);
    transition: .35s ease;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: none;
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-4px);
}

/* LIGHTBOX */
.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(8,8,8,.94);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: .3s ease;
}

.lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox img {
    max-width: min(90%, 1200px);
    max-height: 85vh;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0,0,0,.5);
    transform: scale(.95);
    transition: .35s ease;
}

.lightbox.active img {
    transform: scale(1);
}

.close-btn {
    position: absolute;
    top: 22px;
    right: 32px;
    color: white;
    background: transparent;
    border: 0;
    font-size: 52px;
    cursor: pointer;
    transition: .3s;
}

.close-btn:hover {
    color: var(--primary);
}

.nav-btn {
    position: absolute;
    background: rgba(255,255,255,.1);
    color: white;
    border: 1px solid rgba(255,255,255,.12);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    font-size: 28px;
    cursor: pointer;
    transition: .3s;
}

.nav-btn:hover {
    background: var(--primary);
}

.prev-btn { left: 30px; }
.next-btn { right: 30px; }

/* MOBILE */
@media (max-width: 1050px) {
    .advantages-grid,
    .services-grid,
    .contacts-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .gallery-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .about-content {
        gap: 45px;
    }
}

@media (max-width: 800px) {
    .header-container,
    .header.scrolled .header-container {
        height: 70px;
    }

    .logo,
    .header.scrolled .logo {
        font-size: 23px;
    }

    .burger {
        display: block;
        position: relative;
        z-index: 1100;
    }

    .nav {
        position: fixed;
        top: 0;
        right: 0;
        width: min(82vw, 360px);
        height: 100vh;
        padding: 105px 35px 35px;
        background: rgba(255,255,255,.97);
        backdrop-filter: blur(20px);
        transform: translateX(100%);
        transition: .4s cubic-bezier(.2,.7,.2,1);
        box-shadow: -15px 0 45px rgba(0,0,0,.1);
    }

    .nav.open {
        transform: translateX(0);
    }

    .nav-menu {
        flex-direction: column;
        gap: 24px;
    }

    .nav-link {
        font-size: 21px;
    }

    .nav-link::after {
        bottom: -5px;
    }

    .hero-overlay {
        padding: 125px 0 55px;
    }

    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        margin-top: 55px;
    }

    .about-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 560px) {
    .container {
        width: 94%;
        padding: 0 12px;
    }

    #advantages,
    #services,
    #about,
    #gallery,
    #contacts {
        padding: 82px 0;
    }

    .hero-content h1 {
        font-size: 45px;
    }

    .hero-text {
        font-size: 16px;
        margin-bottom: 28px;
    }

    .hero-button {
        width: 100%;
        justify-content: center;
    }

    .hero-stats,
    .advantages-grid,
    .services-grid,
    .contacts-grid {
        grid-template-columns: 1fr;
    }

    .hero-stat {
        min-height: 112px;
    }

    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .gallery-grid img {
        border-radius: 11px;
    }

    .about-text h3 {
        font-size: 35px;
    }

    .close-btn {
        top: 12px;
        right: 18px;
        font-size: 45px;
    }

    .nav-btn {
        width: 48px;
        height: 48px;
        font-size: 21px;
    }

    .prev-btn { left: 10px; }
    .next-btn { right: 10px; }

    .back-to-top {
        right: 17px;
        bottom: 17px;
        width: 47px;
        height: 47px;
    }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }

    *,
    *::before,
    *::after {
        animation-duration: .01ms !important;
        transition-duration: .01ms !important;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}