/* ========================================
   gabs.bar — Muji-inspired earth-tone design
   Single font: Libre Baskerville
   Palette: #F5EDE3, #3B2F24, #E8DDD0, #8B7D6B, #C4956A, #2A2118, #B5836A
   ======================================== */

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

html {
    scroll-behavior: smooth;
    scroll-snap-type: y proximity;
    font-size: 16px;
}

body {
    font-family: 'Libre Baskerville', Georgia, serif;
    color: #3B2F24;
    background-color: #F5EDE3;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* --- Grain Texture Overlay --- */
.room::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='grain'%3E%3CfeTurbulence baseFrequency='0.65' numOctaves='4' stitchTiles='stitch' type='fractalNoise'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23grain)' opacity='1'/%3E%3C/svg%3E");
    background-repeat: repeat;
}

/* --- Navigation (Desktop) --- */
.nav-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    display: flex;
    justify-content: center;
    gap: 48px;
    padding: 20px 0;
    background-color: rgba(245, 237, 227, 0.95);
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 600ms ease, transform 600ms ease;
    pointer-events: none;
}

.nav-bar.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.nav-link {
    font-family: 'Libre Baskerville', Georgia, serif;
    font-size: 11px;
    font-weight: 400;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: #8B7D6B;
    text-decoration: none;
    transition: color 400ms ease, letter-spacing 1200ms cubic-bezier(0.22, 1, 0.36, 1);
    opacity: 0;
}

.nav-bar.visible .nav-link {
    opacity: 1;
    letter-spacing: 0.12em;
}

.nav-bar.visible .nav-link:nth-child(1) { transition-delay: 0ms; }
.nav-bar.visible .nav-link:nth-child(2) { transition-delay: 80ms; }
.nav-bar.visible .nav-link:nth-child(3) { transition-delay: 160ms; }
.nav-bar.visible .nav-link:nth-child(4) { transition-delay: 240ms; }
.nav-bar.visible .nav-link:nth-child(5) { transition-delay: 320ms; }

.nav-link:hover {
    color: #3B2F24;
}

/* --- Mobile Navigation --- */
.mobile-nav-trigger {
    display: none;
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 200;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
    align-items: center;
    padding: 8px;
}

.mobile-nav-trigger .dot {
    display: block;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background-color: #8B7D6B;
}

.mobile-nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 150;
    background-color: #F5EDE3;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 40px;
    opacity: 0;
    transition: opacity 400ms ease;
    pointer-events: none;
}

.mobile-nav-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.mobile-nav-link {
    font-family: 'Libre Baskerville', Georgia, serif;
    font-size: 18px;
    font-weight: 400;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #3B2F24;
    text-decoration: none;
    transition: color 300ms ease;
}

.mobile-nav-link:hover {
    color: #C4956A;
}

/* --- Room Base --- */
.room {
    position: relative;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    scroll-snap-align: start;
    overflow: hidden;
}

.room-content {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 40px;
}

/* --- Room 1: Hero --- */
.hero-room {
    height: 100vh;
    background-color: #3B2F24;
}

.hero-content {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
}

.hero-text {
    font-family: 'Libre Baskerville', Georgia, serif;
    font-weight: 400;
    font-size: clamp(48px, 7.2vw, 120px);
    letter-spacing: 0.04em;
    color: #F5EDE3;
    line-height: 1;
    transition: transform 0.1s linear;
}

.hero-line {
    width: 60px;
    height: 1px;
    background-color: #C4956A;
    transition: transform 0.1s linear;
}

/* --- Room 2: Statement --- */
.statement-room {
    min-height: 100vh;
    background-color: #F5EDE3;
}

.statement-content {
    position: relative;
    display: flex;
    align-items: center;
    padding-left: 15%;
}

.statement-text {
    font-family: 'Libre Baskerville', Georgia, serif;
    font-weight: 400;
    font-size: 18px;
    line-height: 1.9;
    color: #3B2F24;
    max-width: 580px;
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 1200ms cubic-bezier(0.22, 1, 0.36, 1), transform 1200ms cubic-bezier(0.22, 1, 0.36, 1);
}

.statement-text p + p {
    margin-top: 1.5em;
}

.statement-room.in-view .statement-text {
    opacity: 1;
    transform: translateX(0);
}

/* --- Section Hairline (counter-animate from right) --- */
.section-hairline-right {
    position: absolute;
    right: 10%;
    top: 50%;
    width: 40px;
    height: 1px;
    background-color: #C4956A;
    opacity: 0;
    transform: translateX(40px);
    transition: opacity 1200ms cubic-bezier(0.22, 1, 0.36, 1), transform 1200ms cubic-bezier(0.22, 1, 0.36, 1);
}

.room.in-view .section-hairline-right {
    opacity: 1;
    transform: translateX(0);
}

/* --- Room 3: Object --- */
.object-room {
    height: 100vh;
    background-color: #2A2118;
}

.object-content {
    display: flex;
    justify-content: center;
    align-items: center;
}

.object-svg {
    width: 320px;
    height: 320px;
    max-width: 80vw;
    max-height: 80vw;
}

.svg-circle {
    transition: transform 0.1s linear;
    transform-origin: center;
}

.svg-rect {
    transition: transform 0.1s linear;
    transform-origin: center;
}

.svg-hairline {
    stroke-dasharray: 400;
    stroke-dashoffset: 400;
    transition: stroke-dashoffset 2000ms cubic-bezier(0.22, 1, 0.36, 1);
}

.object-room.in-view .svg-hairline {
    stroke-dashoffset: 0;
}

/* --- Fleuron --- */
.fleuron {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px 0;
    background-color: #E8DDD0;
    color: #C4956A;
    font-size: 20px;
    font-family: 'Libre Baskerville', Georgia, serif;
}

/* --- Room 4: Detail --- */
.detail-room {
    min-height: 80vh;
    background-color: #E8DDD0;
}

.detail-content {
    position: relative;
    padding-left: 10%;
}

.detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 200px 1fr;
    gap: 32px;
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 1200ms cubic-bezier(0.22, 1, 0.36, 1), transform 1200ms cubic-bezier(0.22, 1, 0.36, 1);
}

.detail-room.in-view .detail-grid {
    opacity: 1;
    transform: translateX(0);
}

.detail-main {
    grid-column: 1 / 3;
}

.detail-paragraph {
    font-family: 'Libre Baskerville', Georgia, serif;
    font-weight: 400;
    font-size: 18px;
    line-height: 1.9;
    color: #3B2F24;
    max-width: 580px;
}

.detail-paragraph + .detail-paragraph {
    margin-top: 1.5em;
}

.detail-margin {
    grid-column: 3;
    display: flex;
    align-items: flex-start;
    padding-top: 8px;
}

.margin-note {
    font-family: 'Libre Baskerville', Georgia, serif;
    font-style: italic;
    font-size: 13px;
    line-height: 1.6;
    color: #8B7D6B;
    max-width: 200px;
}

/* --- Room 5: Closing --- */
.closing-room {
    min-height: 60vh;
    background-color: #F5EDE3;
}

.closing-content {
    display: flex;
    align-items: flex-end;
    justify-content: flex-start;
    min-height: 60vh;
    padding-bottom: 60px;
    padding-left: 15%;
}

.closing-text {
    font-family: 'Libre Baskerville', Georgia, serif;
    font-weight: 400;
    font-size: 13px;
    letter-spacing: 0.08em;
    color: #8B7D6B;
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 1200ms cubic-bezier(0.22, 1, 0.36, 1), transform 1200ms cubic-bezier(0.22, 1, 0.36, 1);
}

.closing-room.in-view .closing-text {
    opacity: 1;
    transform: translateX(0);
}

/* --- Responsive --- */

/* Tablet */
@media (max-width: 1024px) {
    .detail-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .detail-main {
        grid-column: 1;
    }

    .detail-margin {
        grid-column: 1;
        padding-top: 24px;
    }

    .margin-note {
        max-width: 100%;
    }

    .statement-content {
        padding-left: 10%;
    }

    .detail-content {
        padding-left: 5%;
    }

    .closing-content {
        padding-left: 10%;
    }
}

/* Mobile */
@media (max-width: 768px) {
    .nav-bar {
        display: none;
    }

    .mobile-nav-trigger {
        display: flex;
    }

    .mobile-nav-overlay {
        display: flex;
    }

    .room-content {
        padding: 0 24px;
    }

    .statement-content {
        padding-left: 24px;
    }

    .detail-content {
        padding-left: 24px;
    }

    .closing-content {
        padding-left: 24px;
        padding-bottom: 40px;
    }

    .hero-text {
        font-size: clamp(36px, 10vw, 72px);
    }

    .object-svg {
        width: 260px;
        height: 260px;
    }

    .statement-text,
    .detail-paragraph {
        font-size: 16px;
        line-height: 1.8;
    }
}

/* --- Borders --- */
.detail-room {
    border-top: 1px solid #E8DDD0;
}