@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+HK:wght@300;400;700;900&family=Inter:wght@300;400;700;900&display=swap');

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

body {
    font-family: 'Noto Sans HK', 'Inter', sans-serif;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1410 100%);
    color: #e8e8e8;
    overflow-x: hidden;
}

body[data-lang="en"] {
    font-family: 'Inter', 'Noto Sans HK', sans-serif;
}

/* Hero Section */
.hero-bg {
    background: linear-gradient(135deg, 
        #1a1410 0%, 
        #2d1f0f 25%, 
        #0a0a0a 50%, 
        #1a1410 75%, 
        #2d1f0f 100%);
    background-size: 400% 400%;
    animation: gradientFlow 15s ease infinite;
}

@keyframes gradientFlow {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* Language Toggle Button */
.lang-toggle {
    position: fixed;
    top: 2rem;
    right: 2rem;
    z-index: 1000;
    background: rgba(212, 165, 116, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(212, 165, 116, 0.3);
    padding: 0.5rem 1.5rem;
    border-radius: 2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
    letter-spacing: 0.1em;
    color: #e8e8e8;
}

.lang-toggle:hover {
    background: rgba(212, 165, 116, 0.2);
    border-color: rgba(212, 165, 116, 0.5);
}

/* Scroll Reveal Animation */
.reveal {
    opacity: 0;
    transform: translateY(60px);
    transition: all 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* Gallery Image Base */
.gallery-img {
    position: relative;
    overflow: hidden;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    border-radius: 0.5rem;
}

.gallery-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 0.6s ease;
}

/* Effect A: Grayscale to Color + Scale */
.effect-colorpop img {
    filter: grayscale(100%);
}

.effect-colorpop:hover img {
    filter: grayscale(0%);
    transform: scale(1.15);
}

/* Effect B: Glitch */
.effect-glitch:hover img {
    animation: glitch 0.3s infinite;
}

@keyframes glitch {
    0% { transform: translate(0); }
    20% { transform: translate(-5px, 5px); }
    40% { transform: translate(-5px, -5px); }
    60% { transform: translate(5px, 5px); }
    80% { transform: translate(5px, -5px); }
    100% { transform: translate(0); }
}

.effect-glitch:hover::before,
.effect-glitch:hover::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: inherit;
    opacity: 0.8;
}

.effect-glitch:hover::before {
    animation: glitchTop 0.3s infinite;
    clip-path: polygon(0 0, 100% 0, 100% 33%, 0 33%);
    background: rgba(255, 0, 0, 0.1);
}

.effect-glitch:hover::after {
    animation: glitchBottom 0.3s infinite;
    clip-path: polygon(0 67%, 100% 67%, 100% 100%, 0 100%);
    background: rgba(0, 255, 255, 0.1);
}

@keyframes glitchTop {
    0%, 100% { transform: translateX(0); }
    50% { transform: translateX(-10px); }
}

@keyframes glitchBottom {
    0%, 100% { transform: translateX(0); }
    50% { transform: translateX(10px); }
}

/* Effect C: Glow Border */
.effect-glow {
    position: relative;
}

.effect-glow::before {
    content: '';
    position: absolute;
    top: -3px;
    left: -3px;
    right: -3px;
    bottom: -3px;
    background: linear-gradient(45deg, #d4a574, #f4c96b, #d4a574, #f4c96b);
    background-size: 400%;
    border-radius: 0.5rem;
    opacity: 0;
    z-index: -1;
    transition: opacity 0.4s ease;
    animation: glowRotate 3s linear infinite;
}

.effect-glow:hover::before {
    opacity: 1;
}

@keyframes glowRotate {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Effect D: Glassmorphism */
.effect-glass::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(0px);
    border-radius: 0.5rem;
    transition: backdrop-filter 0.6s ease;
    opacity: 0;
}

.effect-glass:hover::after {
    backdrop-filter: blur(20px);
    opacity: 1;
}

/* Gallery Grid Layout (4 images) */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 2rem;
    padding: 4rem 0;
}

.gallery-item:nth-child(1) {
    grid-column: 1 / 7;
    grid-row: 1 / 2;
}

.gallery-item:nth-child(2) {
    grid-column: 7 / 13;
    grid-row: 1 / 3;
}

.gallery-item:nth-child(3) {
    grid-column: 1 / 7;
    grid-row: 2 / 3;
}

.gallery-item:nth-child(4) {
    grid-column: 7 / 13;
    grid-row: 3 / 4;
}

/* Service Cards */
.service-card {
    background: rgba(212, 165, 116, 0.03);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(212, 165, 116, 0.1);
    padding: 2rem;
    border-radius: 1rem;
    transition: all 0.4s ease;
}

.service-card:hover {
    background: rgba(212, 165, 116, 0.08);
    border-color: rgba(212, 165, 116, 0.3);
    transform: translateY(-5px);
}

/* Accent Colors */
.accent-gold {
    color: #d4a574;
}

.bg-accent-gold {
    background-color: #d4a574;
}

/* Language Specific Content */
[data-lang="zh"] .lang-en { 
    display: none; 
}

[data-lang="en"] .lang-zh { 
    display: none; 
}

/* Responsive Design */
@media (max-width: 768px) {
    .gallery-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .gallery-item {
        grid-column: 1 / -1 !important;
        grid-row: auto !important;
        height: 250px;
    }
    
    .lang-toggle {
        top: 1rem;
        right: 1rem;
        padding: 0.4rem 1rem;
        font-size: 0.8rem;
    }
    
    .service-card {
        padding: 1.5rem;
    }
}