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

:root {
    --color-black: #0a0a0a;
    --color-dark-gray: #1a1a1a;
    --color-gray: #2a2a2a;
    --color-light-gray: #3a3a3a;
    --color-red: #c8102e;
    --color-red-dark: #a00d25;
    --color-red-light: #e01540;
    --color-white: #ffffff;
    --color-gold: #d4af37;
    --font-main: 'Noto Sans JP', sans-serif;
    --font-display: 'Playfair Display', serif;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background-color: var(--color-black);
    color: var(--color-white);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

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

a {
    text-decoration: none;
    color: inherit;
}

/* ========================================
   Header
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(200, 16, 46, 0.3);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo img {
    height: 40px;
    width: auto;
}

.nav {
    display: flex;
    gap: 40px;
    align-items: center;
}

.nav a {
    font-size: 14px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: color 0.3s ease;
    position: relative;
}

.nav a:not(.btn-buy-header)::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-red);
    transition: width 0.3s ease;
}

.nav a:not(.btn-buy-header):hover::after {
    width: 100%;
}

.btn-buy-header {
    background: var(--color-red);
    padding: 10px 25px;
    border-radius: 30px;
    transition: all 0.3s ease;
}

.btn-buy-header:hover {
    background: var(--color-red-light);
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(200, 16, 46, 0.4);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--color-black) 0%, var(--color-dark-gray) 50%, var(--color-black) 100%);
    z-index: -1;
}

.hero-overlay::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(200, 16, 46, 0.15) 0%, transparent 70%);
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.5; }
    50% { transform: translate(-50%, -50%) scale(1.1); opacity: 0.8; }
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    width: 100%;
    margin-bottom: 60px;
}

.hero-text {
    z-index: 2;
    width: 100%;
}

.hero-title-main {
    display: block;
    font-family: var(--font-display);
    font-size: 72px;
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: 2px;
    background: linear-gradient(135deg, var(--color-white) 0%, var(--color-red) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
    animation: fadeInUp 0.8s ease-out;
    text-align: center;
}

.hero-title-sub {
    display: block;
    font-size: 24px;
    font-weight: 300;
    letter-spacing: 4px;
    color: var(--color-white);
    margin-bottom: 0;
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
    text-align: center;
}

.hero-description {
    font-size: 18px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 40px;
    animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

.hero-price {
    display: flex;
    align-items: baseline;
    gap: 10px;
    margin-bottom: 40px;
    animation: fadeInUp 0.8s ease-out 0.6s backwards;
    justify-content: center;
}

.price-label {
    font-size: 14px;
    color: var(--color-red);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.price-value {
    font-size: 48px;
    font-weight: 900;
    color: var(--color-white);
}

.price-tax {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
}

.hero-buttons {
    display: flex;
    gap: 20px;
    animation: fadeInUp 0.8s ease-out 0.8s backwards;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
    padding: 18px 40px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.btn-primary {
    background: var(--color-red);
    color: var(--color-white);
    box-shadow: 0 10px 30px rgba(200, 16, 46, 0.3);
}

.btn-primary:hover {
    background: var(--color-red-light);
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(200, 16, 46, 0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--color-white);
    border: 2px solid var(--color-white);
    box-sizing: border-box;
}

.btn-secondary:hover {
    background: var(--color-white);
    color: var(--color-black);
    transform: translateY(-3px);
}

.hero-image {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 500px;
    margin: 0 auto 60px;
    animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

.hero-image-wrapper {
    position: relative;
    animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

.hero-watch-img {
    position: relative;
    z-index: 2;
    width: 100%;
    height: auto;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.6))
            drop-shadow(0 40px 80px rgba(0, 0, 0, 0.4))
            drop-shadow(0 10px 20px rgba(0, 0, 0, 0.8));
}

.hero-image-accent {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120%;
    height: 120%;
    background: radial-gradient(circle, rgba(200, 16, 46, 0.3) 0%, transparent 70%);
    z-index: 1;
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

.scroll-indicator {
    display: none;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   Section Headers
   ======================================== */
.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-title {
    font-family: var(--font-display);
    font-size: 48px;
    font-weight: 900;
    letter-spacing: 3px;
    color: var(--color-white);
    margin-bottom: 10px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: var(--color-red);
}

.section-subtitle {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.6);
    letter-spacing: 2px;
    margin-top: 20px;
}

/* ========================================
   Features Section
   ======================================== */
.features {
    padding: 120px 0;
    background: var(--color-dark-gray);
}

.feature-highlight {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    margin-bottom: 100px;
    padding: 60px;
    background: var(--color-gray);
    border-radius: 20px;
    border: 1px solid rgba(200, 16, 46, 0.3);
}

.feature-highlight-image img {
    border-radius: 10px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--color-red);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 30px;
    box-shadow: 0 10px 30px rgba(200, 16, 46, 0.4);
}

.feature-icon i {
    font-size: 32px;
    color: var(--color-white);
}

.feature-highlight-content h3 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--color-white);
}

.feature-highlight-content p {
    font-size: 16px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.8);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.feature-card {
    background: var(--color-gray);
    padding: 50px 40px;
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--color-red);
    box-shadow: 0 20px 40px rgba(200, 16, 46, 0.2);
}

.feature-card-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-red) 0%, var(--color-red-dark) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 30px;
}

.feature-card-icon i {
    font-size: 24px;
    color: var(--color-white);
}

.feature-card h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--color-white);
}

.feature-card p {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.7);
}

/* ========================================
   Gallery Section
   ======================================== */
.gallery {
    padding: 120px 0;
    background: var(--color-black);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 10px;
    aspect-ratio: 1;
    cursor: pointer;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.gallery-item-large {
    grid-column: span 2;
    grid-row: span 2;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-item::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent 0%, rgba(200, 16, 46, 0.3) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.gallery-item:hover::after {
    opacity: 1;
}

/* ========================================
   Specifications Section
   ======================================== */
.specs {
    padding: 120px 0;
    background: var(--color-dark-gray);
}

.specs-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.specs-image {
    position: relative;
}

.specs-image img {
    border-radius: 10px;
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
}

.specs-table {
    background: var(--color-gray);
    border-radius: 15px;
    overflow: hidden;
    border: 1px solid rgba(200, 16, 46, 0.3);
}

.spec-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    padding: 20px 30px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: background 0.3s ease;
}

.spec-row:last-child {
    border-bottom: none;
}

.spec-row:hover {
    background: rgba(200, 16, 46, 0.1);
}

.spec-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-red);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.spec-value {
    font-size: 16px;
    color: var(--color-white);
    font-weight: 500;
}

/* ========================================
   Color Variations Section
   ======================================== */
.variations {
    padding: 120px 0;
    background: var(--color-black);
}

.variations-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.variation-card {
    background: var(--color-white);
    border-radius: 15px;
    overflow: hidden;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 2px solid transparent;
}

.variation-card:hover {
    transform: translateY(-10px);
    border-color: var(--color-red);
    box-shadow: 0 20px 50px rgba(200, 16, 46, 0.3);
}

.variation-image {
    background: var(--color-white);
    padding: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 1;
}

.variation-image img {
    max-height: 250px;
    object-fit: contain;
}

.variation-info {
    background: var(--color-dark-gray);
    padding: 25px;
    text-align: center;
}

.variation-info h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.variation-info p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.7);
}

/* ========================================
   CTA Section
   ======================================== */
.cta {
    padding: 120px 0;
    background: linear-gradient(135deg, var(--color-dark-gray) 0%, var(--color-black) 100%);
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 1000px;
    height: 1000px;
    background: radial-gradient(circle, rgba(200, 16, 46, 0.2) 0%, transparent 70%);
}

.cta-content {
    text-align: center;
    position: relative;
    z-index: 2;
}

.cta-title {
    font-family: var(--font-display);
    font-size: 56px;
    font-weight: 900;
    color: var(--color-white);
    margin-bottom: 20px;
    letter-spacing: 2px;
}

.cta-description {
    font-size: 18px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 40px;
}

.cta-price {
    margin-bottom: 50px;
}

.cta-price-value {
    font-size: 64px;
    font-weight: 900;
    color: var(--color-red);
    display: inline-block;
    margin-right: 10px;
}

.cta-price-tax {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.6);
}

.btn-cta {
    display: inline-flex;
    align-items: center;
    gap: 15px;
    padding: 25px 60px;
    background: var(--color-red);
    color: var(--color-white);
    font-size: 18px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    border-radius: 50px;
    transition: all 0.3s ease;
    box-shadow: 0 15px 40px rgba(200, 16, 46, 0.4);
    margin-bottom: 50px;
}

.btn-cta:hover {
    background: var(--color-red-light);
    transform: translateY(-5px);
    box-shadow: 0 20px 60px rgba(200, 16, 46, 0.6);
}

.cta-info {
    display: flex;
    justify-content: center;
    gap: 60px;
    flex-wrap: wrap;
}

.cta-info-item {
    display: flex;
    align-items: center;
    gap: 12px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    font-weight: 500;
}

.cta-info-item i {
    font-size: 20px;
    color: var(--color-red);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--color-black);
    padding: 60px 0 30px;
    border-top: 1px solid rgba(200, 16, 46, 0.3);
}

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

.footer-logo {
    margin-bottom: 30px;
}

.footer-logo img {
    height: 50px;
    margin: 0 auto;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 30px;
}

.footer-links a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--color-red);
}

.footer-copyright {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.5);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 992px) {
    .hero-image {
        max-width: 450px;
    }
    
    .hero-title-main {
        font-size: 56px;
    }
    
    .feature-highlight {
        grid-template-columns: 1fr;
        padding: 40px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .specs-content {
        grid-template-columns: 1fr;
    }
    
    .variations-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .hero {
        min-height: auto;
        padding: 100px 0 60px;
    }
    
    .hero-image {
        max-width: 350px;
        margin-bottom: 40px;
    }
    
    .hero-title-main {
        font-size: 42px;
    }
    
    .hero-title-sub {
        font-size: 18px;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
        gap: 15px;
    }
    
    .btn-primary,
    .btn-secondary {
        width: 100%;
        justify-content: center;
        padding: 18px 30px;
        font-size: 16px;
        white-space: nowrap;
        box-sizing: border-box;
        min-height: 56px;
        display: flex;
        align-items: center;
    }
    
    .btn-secondary {
        border: 2px solid var(--color-white);
    }
    
    .hero-description {
        font-size: 16px;
        margin-bottom: 30px;
    }
    
    .hero-price {
        margin-bottom: 30px;
    }
    
    .price-value {
        font-size: 40px;
    }
    
    .section-title {
        font-size: 36px;
    }
    
    .cta-title {
        font-size: 36px;
    }
    
    .variations-grid {
        grid-template-columns: 1fr;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .gallery-item-large {
        grid-column: span 1;
        grid-row: span 1;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        min-height: auto;
        padding: 80px 0 50px;
    }
    
    .hero-image {
        max-width: 280px;
        margin-bottom: 30px;
    }
    
    .hero-title-main {
        font-size: 32px;
        line-height: 1.2;
    }
    
    .hero-title-sub {
        font-size: 16px;
        letter-spacing: 2px;
    }
    
    .hero-description {
        font-size: 14px;
        margin-bottom: 25px;
    }
    
    .hero-price {
        margin-bottom: 25px;
    }
    
    .price-value {
        font-size: 36px;
    }
    
    .price-label {
        font-size: 12px;
    }
    
    .price-tax {
        font-size: 12px;
    }
    
    .hero-buttons {
        gap: 12px;
    }
    
    .btn-primary,
    .btn-secondary {
        padding: 16px 25px;
        font-size: 15px;
        min-height: 54px;
        box-sizing: border-box;
    }
    
    .btn-secondary {
        border: 2px solid var(--color-white);
    }
    
    .feature-highlight {
        padding: 30px 20px;
    }
    
    .cta-info {
        gap: 30px;
    }
}