/* ==========================================================================
   SANGOYS – Sàn Gỗ Yên Sơn – Floor Plank Page Loader & Transitions
   Palette: Tông nâu gỗ tự nhiên ấm
   ========================================================================== */

body.sy-has-floor-loader.sy-loading,
html.sy-loading {
    overflow: hidden;
    padding-right: 0 !important;
    width: 100% !important;
    max-width: 100% !important;
}

/* ===== LOADER WRAPPER ===== */
.sy-floor-loader {
    position: fixed;
    inset: 0;
    z-index: 2147483646;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
    background: linear-gradient(160deg, #1c1108 0%, #2d1a08 45%, #1a0f05 100%);
    pointer-events: all;
    opacity: 1;
    visibility: visible;
    transition: opacity 0.45s ease, visibility 0.45s ease;
    isolation: isolate;
}

.sy-floor-loader.is-done {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.sy-floor-loader__inner {
    position: relative;
    width: min(92vw, 520px);
    aspect-ratio: 4 / 3;
    margin-left: auto;
    margin-right: auto;
    flex-shrink: 0;
}

/* ===== PLANK GRID ===== */
.sy-floor-loader__grid {
    position: absolute;
    inset: 0;
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    grid-template-rows: repeat(5, 1fr);
    gap: 5px;
    padding: 8px;
    perspective: 900px;
    transform-style: preserve-3d;
    background: rgba(255, 220, 150, 0.04);
    border-radius: 12px;
    box-shadow:
        0 24px 60px rgba(0, 0, 0, 0.5),
        inset 0 1px 0 rgba(255, 220, 150, 0.06);
}

/* ===== TẤNG VÁN GỖ ===== */
.sy-floor-plank {
    --plank-bg: #c8a878;
    --plank-highlight: rgba(255, 240, 200, 0.4);
    --plank-shadow: rgba(80, 50, 20, 0.3);
    --plank-vein: rgba(180, 130, 60, 0.2);
    position: relative;
    border-radius: 3px;
    overflow: hidden;
    border: 1px solid rgba(255, 220, 150, 0.2);
    background:
        linear-gradient(118deg, transparent 38%, var(--plank-vein) 38%, var(--plank-vein) 40%, transparent 40%),
        linear-gradient(180deg, var(--plank-highlight) 0%, transparent 28%, var(--plank-shadow) 100%),
        linear-gradient(90deg, rgba(255,255,255,0.15) 0%, transparent 15%, transparent 85%, rgba(0,0,0,0.08) 100%),
        var(--plank-bg);
    box-shadow:
        inset 0 2px 0 rgba(255, 240, 200, 0.45),
        inset 0 -1px 0 rgba(0, 0, 0, 0.12),
        0 6px 16px rgba(0, 0, 0, 0.25),
        0 2px 4px rgba(0, 0, 0, 0.15);
    transform: translateY(120%) rotateX(62deg) scale(0.72);
    opacity: 0;
    will-change: transform, opacity;
}

/* Vân gỗ dọc */
.sy-floor-plank::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        repeating-linear-gradient(
            92deg,
            transparent,
            transparent 14px,
            rgba(255, 255, 255, 0.05) 14px,
            rgba(255, 255, 255, 0.05) 15px
        ),
        repeating-linear-gradient(
            88deg,
            transparent,
            transparent 32px,
            rgba(0, 0, 0, 0.04) 32px,
            rgba(0, 0, 0, 0.04) 33px
        );
    pointer-events: none;
}

/* Phản ánh sáng */
.sy-floor-plank::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(255, 240, 200, 0.15) 0%,
        transparent 45%,
        rgba(255, 220, 150, 0.06) 100%
    );
    pointer-events: none;
}

/* ===== 6 TÔNG GỖ VIỆT NAM ===== */

/* Gỗ Căm Xe – nâu đỏ ấm */
.sy-floor-plank--camxe {
    --plank-bg: linear-gradient(145deg, #c47a45 0%, #a85e32 40%, #8d4d25 100%);
    --plank-vein: rgba(160, 90, 40, 0.2);
    --plank-highlight: rgba(255, 200, 150, 0.3);
}

/* Gỗ Chiu Liu Lào – nâu sẫm */
.sy-floor-plank--chiuliu {
    --plank-bg: linear-gradient(145deg, #8a5c35 0%, #6e4525 45%, #5a3518 100%);
    --plank-vein: rgba(100, 65, 30, 0.18);
    --plank-highlight: rgba(200, 160, 110, 0.25);
}

/* Gỗ Giáng Hương – nâu hồng */
.sy-floor-plank--giang-huong {
    --plank-bg: linear-gradient(145deg, #c4895a 0%, #a86a3f 45%, #8d5430 100%);
    --plank-vein: rgba(180, 100, 55, 0.18);
    --plank-highlight: rgba(255, 210, 170, 0.28);
}

/* Gỗ Gơ Nam Mỹ – nâu vàng */
.sy-floor-plank--go-nam-my {
    --plank-bg: linear-gradient(145deg, #d4a96a 0%, #b88a4a 40%, #9a7035 100%);
    --plank-vein: rgba(190, 140, 70, 0.2);
    --plank-highlight: rgba(255, 230, 170, 0.3);
}

/* Gỗ Keo Ghép FJ – vàng nhạt tự nhiên */
.sy-floor-plank--keo-ghep {
    --plank-bg: linear-gradient(150deg, #e0c898 0%, #d0b07a 50%, #bfa060 100%);
    --plank-vein: rgba(180, 145, 75, 0.15);
    --plank-highlight: rgba(255, 245, 210, 0.35);
}

/* Gỗ Sồi Nga – be sáng tinh tế */
.sy-floor-plank--soi-nga {
    --plank-bg: linear-gradient(145deg, #ead8ba 0%, #d8c4a0 40%, #c8b08a 100%);
    --plank-vein: rgba(200, 165, 100, 0.18);
    --plank-highlight: rgba(255, 248, 225, 0.45);
}

/* ===== WIDE PLANKS – desktop ===== */
@media (min-width: 769px) {
    .sy-floor-plank:nth-child(6n+1),
    .sy-floor-plank:nth-child(6n+4) {
        grid-column: span 2;
    }
}

/* ===== ANIMATION PHASES ===== */
.sy-floor-loader.is-assembling .sy-floor-plank {
    opacity: 1;
    animation: syPlankAssemble 0.75s cubic-bezier(0.22, 1, 0.36, 1) both;
    animation-delay: var(--d-asm, 0s);
}

.sy-floor-loader.is-transition-in .sy-floor-plank {
    transform: translateY(0) rotateX(0) scale(1);
    opacity: 1;
    animation: syPlankSnapIn 0.55s cubic-bezier(0.22, 1, 0.36, 1) both;
    animation-delay: var(--d-trans, 0s);
}

.sy-floor-loader.is-revealing .sy-floor-plank {
    animation: syPlankPeelAway 0.8s cubic-bezier(0.55, 0, 0.85, 0.36) both;
    animation-delay: var(--d-rev, 0s);
}

.sy-floor-loader.is-covering .sy-floor-plank {
    transform: translateY(0) rotateX(0) scale(1);
    opacity: 1;
    animation: syPlankCoverIn 0.5s cubic-bezier(0.4, 0, 0.2, 1) both;
    animation-delay: var(--d-cov, 0s);
}

.sy-floor-loader.is-covered-instant .sy-floor-plank,
.sy-floor-loader.is-arrived .sy-floor-plank,
html.sy-transition-arrival .sy-floor-plank {
    opacity: 1;
    transform: translateY(0) rotateX(0) scale(1);
    animation: none !important;
}

html.sy-transition-arrival .sy-floor-loader {
    opacity: 1;
    visibility: visible;
}

html.sy-transition-arrival .sy-floor-loader__brand {
    opacity: 1;
    transform: none;
}

html.sy-transition-arrival .sy-floor-loader__shine {
    opacity: 1;
}

.sy-floor-loader.is-covered-instant .sy-floor-loader__brand,
.sy-floor-loader.is-arrived .sy-floor-loader__brand {
    opacity: 1;
    transform: none;
}

.sy-floor-loader.is-covered-instant .sy-floor-loader__shine,
.sy-floor-loader.is-arrived .sy-floor-loader__shine {
    opacity: 1;
}

.sy-floor-loader.is-arrived .sy-floor-loader__progress-bar {
    animation: syLoaderProgress 1.2s ease-in-out forwards;
}

.sy-floor-loader.is-revealing-fast .sy-floor-plank {
    animation: syPlankPeelAway 0.55s cubic-bezier(0.55, 0, 0.85, 0.36) both;
    animation-delay: var(--d-revf, 0s);
}

/* ===== KEYFRAMES ===== */
@keyframes syPlankSnapIn {
    0%   { opacity: 0; transform: translateY(120%) rotateX(62deg) scale(0.72); }
    55%  { opacity: 1; transform: translateY(-6%) rotateX(8deg) scale(1.02); }
    78%  { transform: translateY(2%) rotateX(-3deg) scale(0.99); }
    100% { opacity: 1; transform: translateY(0) rotateX(0) scale(1); }
}

@keyframes syPlankPeelAway {
    0%   { opacity: 1; transform: translateY(0) rotateX(0) scale(1); }
    100% { opacity: 0; transform: translateY(-110%) rotateX(35deg) scale(0.85); }
}

@keyframes syPlankCoverIn {
    0%   { opacity: 0; transform: translateY(-80%) rotateX(-40deg) scale(0.8); }
    100% { opacity: 1; transform: translateY(0) rotateX(0) scale(1); }
}

/* ===== ÁNH SÁNG & BRAND ===== */
.sy-floor-loader__shine {
    position: absolute;
    inset: -20%;
    background:
        radial-gradient(ellipse at center, rgba(255, 230, 160, 0.2) 0%, rgba(212, 151, 74, 0.1) 35%, transparent 68%);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.6s ease;
}

.sy-floor-loader.is-assembling .sy-floor-loader__shine,
.sy-floor-loader.is-transition-in .sy-floor-loader__shine {
    opacity: 1;
}

.sy-floor-loader__brand {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    z-index: 2;
    opacity: 0;
    transform: translateY(12px) scale(0.96);
    transition: opacity 0.5s ease, transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
    pointer-events: none;
}

.sy-floor-loader.is-brand .sy-floor-loader__brand,
.sy-floor-loader.is-revealing .sy-floor-loader__brand,
.sy-floor-loader.is-revealing-fast .sy-floor-loader__brand {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.sy-floor-loader__logo-wrap {
    max-width: 200px;
    padding: 16px 24px;
    background: rgba(10, 5, 0, 0.65);
    border-radius: 14px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(212, 151, 74, 0.4);
    box-shadow:
        0 0 0 1px rgba(212, 151, 74, 0.12),
        0 12px 40px rgba(0, 0, 0, 0.6),
        inset 0 1px 0 rgba(255, 220, 150, 0.1);
}

.sy-floor-loader__logo-img {
    display: block;
    max-width: 100%;
    height: auto;
    max-height: 72px;
    width: auto;
    margin: 0 auto;
}

.sy-floor-loader__logo-text {
    font-size: 24px;
    font-weight: 900;
    letter-spacing: 3px;
    color: #ffffff;
    text-shadow:
        0 0 20px rgba(212, 151, 74, 0.7),
        0 2px 8px rgba(0, 0, 0, 0.8);
    font-family: "Segoe UI", sans-serif;
    text-align: center;
    line-height: 1.3;
}

.sy-floor-loader__tagline {
    font-size: 11px;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: #f5c842;
    font-weight: 700;
    font-family: "Segoe UI", sans-serif;
    text-shadow:
        0 0 12px rgba(245, 200, 66, 0.9),
        0 0 24px rgba(245, 200, 66, 0.5),
        0 1px 3px rgba(0, 0, 0, 0.9);
    letter-spacing: 3px;
}

/* Progress bar */
.sy-floor-loader__progress {
    width: 120px;
    height: 2px;
    background: rgba(255, 255, 255, 0.12);
    border-radius: 2px;
    margin-top: 8px;
    overflow: hidden;
}

.sy-floor-loader__progress-bar {
    display: block;
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #d4974a, #f0d090);
    border-radius: 2px;
}

.sy-floor-loader.is-assembling .sy-floor-loader__progress-bar,
.sy-floor-loader.is-transition-in .sy-floor-loader__progress-bar {
    animation: syLoaderProgress 1.8s ease-in-out forwards;
}

@keyframes syLoaderProgress {
    0%   { width: 0%; }
    30%  { width: 35%; }
    60%  { width: 68%; }
    85%  { width: 88%; }
    100% { width: 100%; }
}

/* ===== MOBILE ===== */
@media (max-width: 768px) {
    .sy-floor-loader {
        width: 100%;
        left: 0;
        right: 0;
    }

    .sy-floor-loader__inner {
        width: min(88vw, 340px);
        aspect-ratio: 4 / 5;
        margin: 0 auto;
    }

    .sy-floor-loader__grid {
        grid-template-columns: repeat(4, minmax(0, 1fr)) !important;
        grid-template-rows: repeat(5, minmax(0, 1fr)) !important;
        gap: 4px;
        padding: 6px;
    }

    .sy-floor-loader__grid .sy-floor-plank {
        grid-column: auto !important;
        grid-row: auto !important;
    }

    .sy-floor-loader__brand {
        padding: 0 12px;
        width: 100%;
        box-sizing: border-box;
    }

    .sy-floor-loader__logo-wrap {
        max-width: 150px;
        padding: 10px 16px;
    }

    .sy-floor-loader__tagline {
        font-size: 9px;
        letter-spacing: 2px;
    }
}

@media (max-width: 480px) {
    .sy-floor-loader__inner {
        width: min(86vw, 300px);
    }

    .sy-floor-loader__logo-text {
        font-size: 20px;
        letter-spacing: 2px;
    }
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
    .sy-floor-loader {
        transition: opacity 0.2s ease;
    }

    .sy-floor-plank,
    .sy-floor-loader__brand,
    .sy-floor-loader__progress-bar {
        animation: none !important;
        transition: none !important;
        transform: none !important;
        opacity: 1 !important;
    }

    .sy-floor-loader.is-done {
        opacity: 0;
    }
}