/* ============================================
   GLOBAL STYLE
   ============================================ */
:root {
    --home-menu-h: 12rem;
}   

body {
    background-color: var(--bg-secondary) !important;
    overscroll-behavior-y: none;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: none;
}

.category-selection-title,
.category-card-name,
.home-menu-h3,
.home-menu-h4 {
    font-family: "Kanit", sans-serif !important;
}

/* ============================================
   HERO SECTION - PARALLAX ENABLED
   ============================================ */

div#home-menu {
    width: 100%;
    height: calc(var(--app-vh, 100vh) - var(--main-header-h, 0px));
    max-height: calc(var(--app-vh, 100vh) - var(--main-header-h, 0px));
    position: fixed;
    top: var(--main-header-h, 0px);
    left: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    z-index: 0;
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
    pointer-events: none;
    padding-top: env(safe-area-inset-top);
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
    box-sizing: border-box;
    /* Isolate from viewport height changes - prevents jitter */
    contain: layout style paint;
}

div#home-menu::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
    background: inherit;
}

div#home-menu::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.85) 0%, rgba(0, 0, 0, 0.4) 50%, transparent 100%);
    z-index: 2;
    pointer-events: none;
}

/* Scroll-driven dark overlay with backdrop blur (affects everything including pseudo-elements) */
div#home-menu [data-scroll-overlay] {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0);
    backdrop-filter: blur(0px);
    -webkit-backdrop-filter: blur(0px);
    z-index: 999;
    pointer-events: none;
    will-change: background, backdrop-filter;
    /* No transition - direct updates prevent jitter and repaint */
    contain: layout style paint;
}

div#home-menu img.home-background-photo {
    filter: blur(2px);
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center center;
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
    transform-origin: center center;
    will-change: transform;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    /* GPU layer isolation - prevents jitter from viewport changes */
    isolation: isolate;
}

.home-menu-title-container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -70%);
    z-index: 3;
    text-align: center;
    width: 100%;
    max-width: 90%;
    pointer-events: none;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

.brand-lockup {
    margin-bottom: 3.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}

.main-title {
    font-family: 'Oswald', sans-serif;
    font-size: clamp(2.5rem, 5rem, 7rem);
    font-weight: 600;
    color: #FFFFFF;
    text-transform: uppercase;
    letter-spacing: 2px;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.6), 0 4px 16px rgba(0, 0, 0, 0.5);
    margin: 0;
    padding: 0;
    line-height: 0.9;
    white-space: nowrap;
}

.separator-line {
    width: 40px;
    height: 3px;
    background-color: #D4AF37;
    margin: 0.5rem 0;
}

.tagline {
    font-family: 'Montserrat', sans-serif;
    font-size: clamp(0.75rem, 1.1rem, 1.4rem);
    text-shadow: 0px 2px 8px rgb(0, 0, 0) !important;
    font-weight: 500;
    color: #cfcfcf;
    opacity: 1;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin: 0;
    padding: 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.4);
}

/* ============================================
   HERO CTA BUTTON - Premium Glassmorphism
   ============================================ */

.hero-cta-button {
    margin-top: 0rem;
    padding: 1.5rem 3rem;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: 50px;
    color: #FFFFFF;
    font-family: 'Montserrat', sans-serif;
    font-size: clamp(0.875rem, 1rem, 1.125rem);
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
    cursor: pointer;
    pointer-events: auto;
    position: relative;
    z-index: 4;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    background-color: rgba(0, 0, 0, 0.05);
    transition: 
        opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1),
        transform 0.2s cubic-bezier(0.16, 1, 0.3, 1),
        border-color 0.2s cubic-bezier(0.16, 1, 0.3, 1),
        background-color 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    -webkit-tap-highlight-color: transparent;
    will-change: transform, opacity;
}

.hero-cta-button:hover {
    border-color: rgba(255, 255, 255, 0.8);
    background-color: rgba(255, 255, 255, 0.08);
    transform: translateY(-2px);
}

.hero-cta-button:active {
    transform: translateY(0);
    transition-duration: 0.1s;
}

.hero-cta-button.hidden {
    opacity: 0;
    pointer-events: none;
}

/* Breathing animation - subtle and premium */
@keyframes breathing {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.03);
    }
}

.hero-cta-button:not(.hidden) {
    animation: breathing 4s ease-in-out infinite;
}



.fa-angle-down{
    margin-left: 0.5rem;
    margin-right: -0.5rem;
}


/* ============================================
   CATEGORY SELECTION PAGE
   ============================================ */

#category-selection-page {
 
    background: linear-gradient(
        to bottom,
        var(--bg-secondary) 0%,
        var(--bg-tertiary) 50%,
        var(--bg-secondary) 100%
    );
    padding-top: 3rem; 
    padding-bottom: calc(2rem);
    padding-left: calc(3.125rem * var(--mobile-scale));
    padding-right: calc(3.125rem * var(--mobile-scale));
    position: relative;
    z-index: 2;
    border-radius: 24px 24px 0 0;
    margin-top: calc(var(--app-vh, 100vh) - var(--main-header-h, 0px));
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
    box-shadow: 0 -2px 16px rgba(0, 0, 0, 0.08);
    overscroll-behavior: contain;
    /* Removed transition - prevents repaint/reflow during scroll */
    will-change: transform;
    isolation: isolate;
    -webkit-isolation: isolate;
    contain: layout style paint;
}

[data-theme="dark"] #category-selection-page {
    box-shadow: 0 -2px 20px rgba(0, 0, 0, 0.4);
}

/* ============================================
   SECTION TITLE - Premium Typography Hierarchy
   ============================================ */

.category-title-wrapper {
    position: relative;
    width: 100%;
    margin-top: 0;
    margin-bottom: calc(2rem * var(--mobile-scale));
    box-sizing: border-box;
}

/* DEFAULT (DARK THEME) */
.category-title-wrapper::before {
    content: '';
    position: absolute;
    top: -1.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 4px;
    background-color: rgba(255, 255, 255, 0.35); /* premium white */
    border-radius: 2px;
    opacity: 1;
}

/* LIGHT THEME OVERRIDE */
html[data-theme="light"] .category-title-wrapper::before,
body[data-theme="light"] .category-title-wrapper::before {
    background-color: rgba(17, 17, 17, 0.45); /* Instagram-style black */
}


.category-title-wrapper::after {
    content: none;
}

.category-selection-title {
    flex: 1;
    text-align: center;
    font-size: calc(clamp(1.2rem, 1.9rem, 2.3rem) * var(--mobile-scale-typography));
    font-weight: 500;
    font-family: "Kanit", sans-serif;
    color: var(--text-primary);
    letter-spacing: 1.2px; 
    line-height: 1.25; 
    min-width: 0;
    overflow-wrap: break-word;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

[data-theme="dark"] .category-selection-title {
    color: rgba(255, 255, 255, 0.96);
}

/* ============================================
   CATEGORY GRID
   ============================================ */

.category-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem 5rem;
    max-width: 1200px;
    margin: 0 auto;
    align-items: start;
    /* Prevent grid items from expanding beyond their column width */
    min-width: 0;
}

/* ============================================
   CATEGORY CARD
   ============================================ */

.category-card {
    position: relative;
    border-radius: 1.375rem;
    overflow: visible;
    transition: 
        transform 200ms cubic-bezier(0.16, 1, 0.3, 1),
        box-shadow 200ms cubic-bezier(0.16, 1, 0.3, 1);
    cursor: pointer;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    -webkit-tap-highlight-color: transparent;
    will-change: transform;
    width: 100%;
    max-width: 100%;
    min-width: 0;
    height: auto;
    box-sizing: border-box;
}

.category-card:hover {
    transform: translateY(-3px) scale(1.015);
}

.category-card:active {
    transform: translateY(-1px) scale(0.998);
    transition-duration: 100ms;
}

.category-card-image-wrapper {
    width: 100%;
    aspect-ratio: 4 / 2.8;   
    border-radius: 1.375rem;
    overflow: hidden;
    background-color: var(--bg-tertiary);
    margin-bottom: 1.125rem;
    box-shadow: 
        0 2px 8px rgba(0, 0, 0, 0.06),
        inset 0 0 0 1px rgba(0, 0, 0, 0.03); 
    position: relative;
}

.category-card-image-wrapper::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        to bottom,
        transparent 0%,
        rgba(0, 0, 0, 0.02) 100%
    );
    pointer-events: none;
    z-index: 1;
}

.category-card-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
    transition: transform 350ms cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    z-index: 0;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-sizing: border-box;
}

.category-card:hover .category-card-image {
    transform: scale(1.025);
}

.category-card-name {
    color: var(--text-primary);
    font-size: calc(2rem * var(--mobile-scale-typography));
    font-weight: 400;
    font-family: "Kanit", sans-serif;

    text-align: center;
    padding: 0 0.875rem;
    margin: 5px 0 0 0;

    line-height: 1.2;
    min-height: calc(1.25em * 2);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    /* Force text to wrap and prevent grid column expansion */
    min-width: 0;
    width: 100%;
    max-width: 100%;
    overflow-wrap: break-word;
    word-break: normal;
    hyphens: auto;
    -webkit-hyphens: auto;
    -ms-hyphens: auto;
    box-sizing: border-box;
}


[data-theme="dark"] .category-card-name {
    color: rgba(255, 255, 255, 0.94);
}

/* ============================================
   DARK MODE
   ============================================ */

[data-theme="dark"] #category-selection-page {
    background: linear-gradient(
        to bottom,
        #141416 0%,
        #1a1a1c 50%,
        #141416 100%
    );
}






[data-theme="dark"] .category-card-image-wrapper::after {
    background: linear-gradient(
        to bottom,
        transparent 0%,
        rgba(0, 0, 0, 0.15) 100%
    );
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
    div#home-menu {
        height: calc(var(--app-vh, 100vh) - var(--main-header-h, 0px));
        max-height: calc(var(--app-vh, 100vh) - var(--main-header-h, 0px));
    }

    div#home-menu::before {
        height: 60px;
    }

    .main-title {
        font-size: clamp(1.8rem, 3.8rem, 5.3rem);
        letter-spacing: 1.5px;
    }

    .tagline {
        font-size: clamp(0.65rem, 0.95rem, 1.2rem);
        letter-spacing: 1px;
    }

    .separator-line {
        width: 35px;
        height: 2px;
    }

    #category-selection-page {
        padding-top: 1.75rem;
        padding-left: calc(1.5rem * var(--mobile-scale) + env(safe-area-inset-left));
        padding-right: calc(1.5rem * var(--mobile-scale) + env(safe-area-inset-right));
        border-radius: 20px 20px 0 0;
        margin-top: calc(var(--app-vh, 100vh) - var(--main-header-h, 0px));
    }

    .category-title-wrapper {
        margin-bottom: calc(1.75rem * var(--mobile-scale));
    }

    .category-title-wrapper::before {
        top: -1.25rem;
        width: 36px;
        height: 3.5px;
    }

    .category-grid {
        gap: 1.7rem 1rem;
    }

    .category-card {
        border-radius: 1.125rem;
    }

    .category-card-image-wrapper {
        border-radius: 1.125rem;
        margin-bottom: 1rem;
    }

    .category-card-name {
        font-size: calc(1.7rem * var(--mobile-scale-typography));
        padding: 0 0.625rem;
        min-height: 2.25rem;
        margin-top: 0;
    }
}

@media (max-width: 500px) {
    #lang-fab {
        bottom: calc(5rem * var(--mobile-scale)) !important;
    }
    div#home-menu {
        height: calc(var(--app-vh, 100vh) - var(--main-header-h, 0px));
        max-height: calc(var(--app-vh, 100vh) - var(--main-header-h, 0px));
    }

    div#home-menu::before {
        height: 50px;
    }

    .main-title {
        font-size: clamp(1.80rem, 3.70rem, 4.70rem);
        letter-spacing: 1px;
    }

    .tagline {
        font-size: clamp(0.7rem, 0.95rem, 1.1rem);
        letter-spacing: 0.9px;
    }

    .separator-line {
        width: 40px;
        height: 1.5px;
    }

    .brand-lockup {
        gap: 0.7rem;
    }

    #category-selection-page {
        padding-top: 1.60rem;
        padding-left: calc(1rem * var(--mobile-scale) + env(safe-area-inset-left));
        padding-right: calc(1rem * var(--mobile-scale) + env(safe-area-inset-right));
        border-radius: 18px 18px 0 0;
        margin-top: calc(var(--app-vh, 100vh) - var(--main-header-h, 0px));
    }

    .category-title-wrapper {
        margin-bottom: calc(1.60rem * var(--mobile-scale));
    }

    .category-title-wrapper::before {
        top: -1rem;
        width: 32px;
        height: 3px;
    }

    .category-grid {
        gap: 1.7rem 1.5rem;
    }

    .category-card {
        border-radius: 1rem;
    }

    .category-card-image-wrapper {
        border-radius: 1rem;
        margin-bottom: 0.875rem;
    }

    .category-card-name {
        font-size: calc(1.4rem * var(--mobile-scale-typography));
        padding: 0 0.5rem;
        min-height: 2rem;
        margin-top: 0;
    }

    .hero-cta-button {
        margin-top: 0rem;
        padding: 1rem 2.4rem;
        font-size: clamp(0.75rem, 0.9rem, 1rem);
    }
}

/* ============================================
    LOADING & EMPTY STATE
   ============================================ */

.category-grid.loading {
    opacity: 0.65;
    pointer-events: none;
    transition: opacity 200ms ease;
}

.category-grid.empty {
    text-align: center;
    padding: 5rem 2rem;
    color: var(--text-secondary);
    font-size: calc(1.125rem * var(--mobile-scale-typography));
    font-family: "Kanit", sans-serif;
    font-weight: 400;
    letter-spacing: 0.2px;
}