/* ============================================
   BOHEIMA — Interior Design Studio
   ============================================ */

/* --- Reset & Base --- */

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

:root {
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-serif: 'Cormorant Garamond', 'Georgia', 'Times New Roman', serif;

    --text: #2c2420;
    --text-light: #7a756e;
    --green: #4a5548;

    --pad: clamp(1.5rem, 6vw, 8rem);

    /* Golden ratio type scale (φ = 1.618) */
    --fs-1: 0.382rem;   /* φ⁻² — micro labels           */
    --fs-2: 0.618rem;   /* φ⁻¹ — small caps, labels      */
    --fs-3: 0.786rem;   /* φ⁻⁰·⁵ — body-small            */
    --fs-4: 1rem;       /* base                           */
    --fs-5: 1.272rem;   /* φ⁰·⁵ — lead text               */
    --fs-6: 1.618rem;   /* φ¹ — sub-headings              */
    --fs-7: 2.618rem;   /* φ² — headings                  */
    --fs-8: 4.236rem;   /* φ³ — display                   */
    --fs-9: 6.854rem;   /* φ⁴ — hero                      */
}

html {
    scroll-behavior: smooth;
    scroll-snap-type: y proximity;
    color: var(--text);
    background-color: #dcd7d0;
}

body {
    font-family: var(--font);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Film grain overlay */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: 9999;
    pointer-events: none;
    opacity: 0.3;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='grain'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='5' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23grain)'/%3E%3C/svg%3E");
}

h1, h2, p, .tagline, .services-list,
.project-num, .project-type, .project-arrow,
.contact-label, .contact-email, .contact-col,
.contact-details, .project-description,
.project-details, .copyright, .footer-tagline,
.project-page-type, .back-link {
    transform: rotate(0deg);
}

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

a {
    color: inherit;
}

/* --- Language --- */

html[lang="cs"] [lang="en"] { display: none; }
html[lang="en"] [lang="cs"] { display: none; }

.translatable {
    transition: opacity 0.35s ease;
}

body.lang-switching .translatable {
    opacity: 0;
}

/* --- Header --- */

header {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 100;
    padding: 1.5rem 2rem;
}

.lang-toggle {
    background: none;
    border: none;
    cursor: pointer;
    font-family: var(--font);
    font-size: var(--fs-2);
    letter-spacing: 0.12em;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 0.3rem;
    transition: color 0.3s;
}

.lang-toggle:hover {
    color: var(--text);
}

.lang-option {
    transition: color 0.3s, opacity 0.3s;
    opacity: 0.5;
}

.lang-option.active {
    color: var(--text);
    opacity: 1;
}

.lang-divider {
    opacity: 0.3;
}

/* --- Snap sections --- */

.snap {
    min-height: 100vh;
    min-height: 100svh;
    scroll-snap-align: start;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--pad);
}

/* --- Hero --- */

.hero {
    flex-direction: column;
    text-align: center;
    position: relative;
    justify-content: center;
    padding-top: 0;
    padding-bottom: 0;
}

.hero-content {
    max-width: 50rem;
    position: relative;
}

.hero-bottom {
    position: absolute;
    bottom: 5rem;
    left: 50%;
    transform: translateX(-50%);
    max-width: 50rem;
    width: 100%;
    padding: 0 var(--pad);
}

.logo {
    font-family: var(--font-serif);
    font-weight: 400;
    font-size: clamp(var(--fs-8), 7vw, 6rem);
    letter-spacing: 0.35em;
    margin-right: -0.35em;
    user-select: none;
    display: inline-block;
    clip-path: inset(46% 0 54% 0);
    animation: logo-reveal 3.5s ease-out 1.6s forwards;
}

.tagline {
    font-weight: 400;
    font-size: clamp(var(--fs-4), 1.6vw, var(--fs-5));
    color: #fff;
    margin-top: 1.5rem;
    letter-spacing: 0.02em;
}

.services-list {
    list-style: none;
    display: flex;
    justify-content: center;
    flex-wrap: nowrap;
    gap: 0;
    margin-top: 3rem;
    font-size: clamp(var(--fs-2), 1.1vw, var(--fs-4));
    white-space: nowrap;
    color: #fff;
    letter-spacing: 0.03em;
}

.services-list li {
    padding: 0 clamp(0.6rem, 1.5vw, 1.4rem);
    position: relative;
}

.services-list li + li::before {
    content: '/';
    position: absolute;
    left: -0.15em;
    opacity: 0.3;
}

.scroll-hint {
    margin-top: 2.5rem;
    font-size: var(--fs-5);
    color: var(--text);
    opacity: 0.25;
    animation: bob 2s ease-in-out infinite;
    transition: opacity 0.6s ease;
}

@keyframes bob {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(6px); }
}

/* --- Project sections --- */

.project-section {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: clamp(2rem, 5vw, 6rem);
    align-items: center;
    width: 100%;
    max-width: 1200px;
    text-decoration: none;
    color: inherit;
}

.project-section.layout-reverse .project-info {
    order: 2;
}

.project-num {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: var(--fs-2);
    letter-spacing: 0.15em;
    color: var(--text-light);
    margin-bottom: 1.2rem;
}

.project-num::after {
    content: '';
    flex: 1;
    height: 1px;
    background-color: var(--text);
    opacity: 0.12;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 2.5s cubic-bezier(0.12, 0.8, 0.15, 1) 0.7s;
}

.snap.in-view .project-num::after {
    transform: scaleX(1);
}

.project-title {
    font-weight: 400;
    font-size: clamp(var(--fs-7), 4.5vw, var(--fs-8));
    letter-spacing: -0.02em;
    line-height: 1.1;
}

.project-type {
    display: block;
    font-size: var(--fs-3);
    color: var(--text-light);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-top: 1rem;
}

.project-arrow {
    display: inline-block;
    font-size: var(--fs-6);
    margin-top: 2rem;
    color: var(--text-light);
    transition: transform 0.4s ease, color 0.4s ease;
}

.project-section:hover .project-arrow {
    transform: translateX(8px);
    color: var(--green);
}

/* --- Project image --- */

.project-img {
    overflow: hidden;
}

.project-img .parallax-image {
    max-height: 75vh;
}

.project-img .parallax-image img {
    width: 100%;
    height: auto;
    max-height: 75vh;
    object-fit: cover;
}

/* --- Parallax Images (shared) --- */

.parallax-image {
    width: 100%;
    overflow: hidden;
    position: relative;
    z-index: 10000;
}

.parallax-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.6s cubic-bezier(0.25, 0.1, 0.25, 1);
}

/* Dark green hover overlay */
.parallax-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background-color: var(--green);
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none;
    z-index: 1;
}

.parallax-image:hover::after {
    opacity: 0.8;
}

.parallax-image:hover img {
    transform: scale(1.03);
}

/* --- Contact --- */

.contact {
    flex-direction: column;
    position: relative;
}

.contact-inner {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: clamp(2.5rem, 5vw, 5rem);
    align-items: center;
    width: 100%;
    max-width: 1000px;
}

.contact-portrait {
    overflow: hidden;
    max-height: 70vh;
}

.contact-portrait img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.contact-content {
    text-align: left;
}

.contact-label {
    font-size: var(--fs-2);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.contact-email {
    display: block;
    font-size: clamp(var(--fs-6), 3.5vw, var(--fs-7));
    font-weight: 300;
    color: var(--text);
    text-decoration: none;
    letter-spacing: 0.01em;
    transition: color 0.4s ease;
}

.contact-email:hover {
    color: var(--green);
}

.contact-line {
    width: 2.5rem;
    height: 1px;
    background-color: var(--text);
    opacity: 0.12;
    margin: 2.5rem 0;
}

.contact-details {
    display: flex;
    gap: clamp(1.5rem, 3vw, 2.5rem);
    text-align: left;
}

.contact-col {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
    font-size: var(--fs-3);
    color: var(--text-light);
}

.contact-col-label {
    font-size: var(--fs-2);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    opacity: 0.5;
}

.contact-col a {
    text-decoration: none;
    color: var(--text-light);
    transition: color 0.3s;
}

.contact-col a:hover {
    color: var(--text);
}

.contact-links {
    display: flex;
    align-items: center;
    gap: 0.4em;
}

.contact-divider {
    opacity: 0.4;
}

.contact-footer {
    position: absolute;
    bottom: 2rem;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 var(--pad);
}

.copyright {
    font-size: var(--fs-3);
    color: var(--text-light);
    opacity: 0.55;
    letter-spacing: 0.03em;
}

.footer-tagline {
    font-size: var(--fs-3);
    color: var(--text-light);
    opacity: 0.55;
    letter-spacing: 0.02em;
    font-style: italic;
}

/* --- Project detail pages --- */

.page-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.back-link {
    font-size: var(--fs-3);
    letter-spacing: 0.08em;
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.3s;
}

.back-link:hover {
    color: var(--text);
}

.project-page {
    padding: 8rem var(--pad) 4rem;
    max-width: 1000px;
    margin: 0 auto;
}

.project-page-title {
    font-weight: 400;
    font-size: clamp(var(--fs-7), 5vw, var(--fs-8));
    letter-spacing: -0.02em;
    line-height: 1.1;
    margin-bottom: 1rem;
}

.project-page-type {
    display: flex;
    align-items: center;
    gap: 1.2rem;
    font-size: var(--fs-3);
    color: var(--text-light);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: clamp(3rem, 6vh, 5rem);
}

.project-page-type::after {
    content: '';
    flex: 1;
    height: 1px;
    background-color: var(--text);
    opacity: 0.1;
}

.project-description {
    font-size: var(--fs-4);
    line-height: 1.7;
    color: var(--text-light);
    max-width: 38em;
    margin-bottom: clamp(2.5rem, 4vh, 3.5rem);
}

.project-details {
    width: 100%;
    max-width: 32rem;
    border-top: 1px solid rgba(44, 36, 32, 0.08);
    margin-bottom: clamp(3rem, 6vh, 5rem);
}

.detail-row {
    display: flex;
    align-items: baseline;
    padding: 0.85rem 0;
    border-bottom: 1px solid rgba(44, 36, 32, 0.08);
}

.detail-row dt {
    font-size: var(--fs-2);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-light);
    width: 9rem;
    flex-shrink: 0;
}

.detail-row dd {
    font-size: var(--fs-3);
    color: var(--text);
    margin: 0;
}

.detail-row dd a {
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.3s;
}

.detail-row dd a:hover {
    color: var(--text);
}

.project-page-images {
    display: flex;
    flex-direction: column;
    gap: clamp(1rem, 2.5vw, 2rem);
}

.project-page-images .parallax-image img {
    width: 100%;
    height: auto;
}

.project-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: clamp(3rem, 6vh, 5rem) 0;
    margin-top: clamp(2rem, 4vh, 3rem);
    border-top: 1px solid rgba(44, 36, 32, 0.1);
    font-size: var(--fs-3);
}

.project-nav a {
    text-decoration: none;
    color: var(--text-light);
    letter-spacing: 0.05em;
    transition: color 0.3s;
}

.project-nav a:hover {
    color: var(--text);
}

/* --- Cursor Glow --- */

.cursor-glow {
    position: fixed;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(74, 85, 72, 0.04) 0%, transparent 70%);
    pointer-events: none;
    transform: translate(-50%, -50%);
    z-index: 9999;
    will-change: left, top;
    opacity: 0;
    transition: opacity 0.6s;
}

.cursor-glow.visible {
    opacity: 1;
}

/* --- Scroll Reveal --- */

.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s cubic-bezier(0.25, 0.1, 0.25, 1),
                transform 0.8s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Side Navigation --- */

.side-nav {
    position: fixed;
    right: 2rem;
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 1.2rem;
}

.side-tick {
    display: block;
    width: 16px;
    height: 1px;
    background-color: var(--text);
    border: none;
    padding: 0;
    cursor: pointer;
    opacity: 0.2;
    transition: width 0.4s ease, opacity 0.4s ease;
}

.side-tick.active {
    width: 28px;
    opacity: 0.6;
}

.side-tick:hover {
    opacity: 0.5;
}

/* --- Sight Line — signature horizontal stroke --- */

.hero-content::after {
    content: '';
    position: absolute;
    top: 48%;
    left: 50%;
    width: 130%;
    height: 4px;
    background-color: var(--text);
    transform: translateX(-50%) scaleX(0);
    animation: sight-line 1.5s cubic-bezier(0.12, 0.8, 0.15, 1) 0.3s forwards;
    pointer-events: none;
    z-index: 1;
}

@keyframes sight-line {
    to { transform: translateX(-50%) scaleX(1); }
}

@keyframes logo-reveal {
    20%  { clip-path: inset(6% 0 8% 0); }
    50%  { clip-path: inset(2% 0 3% 0); }
    80%  { clip-path: inset(0.5% 0 0.5% 0); }
    100% { clip-path: inset(0 0 0 0); }
}

/* --- Crop Marks on Images --- */

.project-img {
    position: relative;
}

.project-img::before,
.project-img::after {
    content: '';
    position: absolute;
    width: 12px;
    height: 12px;
    pointer-events: none;
    z-index: 2;
    opacity: 0.15;
}

.project-img::before {
    top: -6px;
    left: -6px;
    border-top: 1px solid var(--text);
    border-left: 1px solid var(--text);
}

.project-img::after {
    bottom: -6px;
    right: -6px;
    border-bottom: 1px solid var(--text);
    border-right: 1px solid var(--text);
}

/* --- Arrow Reveal on Image Hover --- */

.project-section .parallax-image::before {
    content: '→';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) translateY(6px);
    font-size: var(--fs-6);
    color: #fff;
    z-index: 2;
    opacity: 0;
    transition: opacity 0.5s ease, transform 0.5s ease;
    pointer-events: none;
    letter-spacing: 0;
}

.project-section:hover .parallax-image::before {
    opacity: 0.9;
    transform: translate(-50%, -50%) translateY(0);
}

/* --- Reduced Motion --- */

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .reveal { opacity: 1; transform: none; }
    html { scroll-behavior: auto; scroll-snap-type: none; }
    .scroll-hint { display: none; }
}

/* --- Mobile --- */

@media (max-width: 768px) {
    .cursor-glow { display: none; }
    .side-nav { display: none; }

    header { padding: 1rem 1.25rem; }

    .services-list {
        flex-direction: column;
        gap: 0.4rem;
    }

    .services-list li + li::before {
        display: none;
    }

    .project-section {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .project-section.layout-reverse .project-info {
        order: 0;
    }

    .project-img .parallax-image,
    .project-img .parallax-image img {
        max-height: 45vh;
    }

    .project-img::before,
    .project-img::after {
        display: none;
    }

    .snap {
        padding: 4rem var(--pad);
    }

    .contact-inner {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-portrait {
        max-height: 40vh;
    }

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

    .contact-line {
        margin: 2rem auto;
    }

    .contact-details {
        flex-direction: column;
        align-items: center;
        gap: 1.5rem;
    }

    .logo {
        font-size: clamp(2rem, 10vw, 3.5rem);
        letter-spacing: 0.2em;
        margin-right: -0.2em;
    }

    .contact-footer {
        flex-direction: column;
        gap: 0.4rem;
        text-align: center;
    }

    .contact-links {
        flex-direction: column;
        gap: 0.2em;
    }

    .contact-divider {
        display: none;
    }

    .page-header {
        padding: 1rem 1.25rem;
    }
}

/* --- Tablet --- */

@media (min-width: 769px) and (max-width: 1024px) {
    .project-section {
        grid-template-columns: 1fr 1fr;
        gap: 3rem;
    }

    .project-img .parallax-image,
    .project-img .parallax-image img {
        max-height: 60vh;
    }
}