/* ===================================
   PRACE Corporate Website
   Aman-inspired Luxury Minimal Design
   =================================== */

/* ===================================
   CSS Variables & Reset
   =================================== */
:root {
    /* Color Palette */
    --color-primary: #1a1a1a;      /* Deep Black */
    --color-secondary: #2d2d2d;    /* Charcoal */
    --color-gold: #c9a961;         /* Gold Accent */
    --color-beige: #f5f1e8;        /* Elegant Beige */
    --color-footer-bg: #F8F4EE;    /* Footer Background (matches logo) */
    --color-light: #ffffff;        /* Pure White */
    --color-gray: #8b8b8b;         /* Muted Gray */
    --color-text: #4a4a4a;         /* Text Gray */
    
    /* Typography */
    --font-serif: 'Cormorant Garamond', serif;
    --font-sans: 'Noto Sans', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    --spacing-xxl: 8rem;
    --spacing-xxxl: 12rem;
    
    /* Transitions */
    --transition-smooth: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    font-weight: 300;
    line-height: 1.8;
    color: var(--color-text);
    background-color: var(--color-light);
    overflow-x: hidden;
    letter-spacing: 0.02em;
}

/* ===================================
   Hero Section - Aman Style
   =================================== */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #2d5f7a 0%, #1a3a52 100%);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, transparent 0%, rgba(0, 0, 0, 0.2) 100%);
    pointer-events: none;
}

.hero-content {
    text-align: center;
    z-index: 1;
    max-width: 1000px;
    padding: 0 2rem;
}

.hero-logo-container {
    margin-bottom: var(--spacing-md);
}

.hero-logo {
    width: clamp(300px, 50vw, 600px);
    height: auto;
    max-width: 90vw;
    opacity: 1;
    filter: brightness(0) saturate(100%) invert(78%) sepia(30%) saturate(600%) hue-rotate(5deg) brightness(95%) contrast(85%);
}

.hero-subtitle {
    font-family: var(--font-serif);
    font-size: clamp(0.875rem, 1.5vw, 1.25rem);
    font-weight: 300;
    color: rgba(255, 255, 255, 0.85);
    letter-spacing: 0.15em;
    text-transform: none;
}

.gold-letter {
    color: var(--color-gold);
    font-weight: 400;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
}

.scroll-indicator span {
    display: block;
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.6), transparent);
    animation: scrollAnimation 2s ease-in-out infinite;
}

@keyframes scrollAnimation {
    0%, 100% {
        opacity: 0;
        transform: translateY(0);
    }
    50% {
        opacity: 1;
        transform: translateY(20px);
    }
}

/* ===================================
   Container Utilities
   =================================== */
.container-narrow {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 2rem;
}

.container-wide {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 4rem;
}

/* ===================================
   Section Title Minimal
   =================================== */
.section-title-minimal {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 300;
    color: var(--color-primary);
    letter-spacing: 0.1em;
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

/* ===================================
   Philosophy Section
   =================================== */
.philosophy-section {
    padding: var(--spacing-xxxl) 0;
    background-color: var(--color-beige);
    margin-top: 4rem;
    position: relative;
    z-index: 2;
}

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

.quote-large {
    font-family: var(--font-sans);
    font-size: clamp(1.125rem, 2vw, 1.375rem);
    font-weight: 300;
    color: var(--color-primary);
    line-height: 1.8;
    letter-spacing: 0.03em;
    margin-top: var(--spacing-lg);
}

.quote-large-jp {
    font-family: var(--font-sans);
    font-size: clamp(0.875rem, 1.5vw, 1rem);
    font-weight: 300;
    color: var(--color-gray);
    line-height: 2;
    letter-spacing: 0.03em;
    margin-top: var(--spacing-md);
    text-align: center;
}

/* ===================================
   Story Section
   =================================== */
.story-section {
    padding: var(--spacing-xxxl) 0;
    background-color: var(--color-light);
}

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

.story-text {
    font-size: clamp(1rem, 1.8vw, 1.125rem);
    font-weight: 300;
    line-height: 2;
    color: var(--color-text);
    letter-spacing: 0.03em;
    margin-top: var(--spacing-lg);
    text-align: left;
}

.story-text p {
    margin-bottom: var(--spacing-lg);
}

.story-text-jp {
    font-size: clamp(0.875rem, 1.5vw, 1rem);
    font-weight: 300;
    line-height: 2;
    color: var(--color-gray);
    margin-top: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.story-closing {
    font-family: var(--font-sans);
    font-size: clamp(1rem, 1.8vw, 1.125rem);
    font-weight: 300;
    color: var(--color-text);
    letter-spacing: 0.03em;
    line-height: 2;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    text-align: left;
}

.story-closing-jp {
    font-size: clamp(0.875rem, 1.5vw, 1rem);
    font-weight: 300;
    color: var(--color-gray);
    line-height: 2;
    margin-top: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    text-align: left;
}

/* ===================================
   Service Section
   =================================== */
.service-section {
    padding: var(--spacing-xxxl) 0;
    background-color: var(--color-beige);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.service-header {
    margin-bottom: var(--spacing-xl);
    max-width: 1200px;
    width: 100%;
    padding: 0 2rem;
    box-sizing: border-box;
    text-align: center;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    max-width: 1200px;
    width: 100%;
    padding: 0 2rem;
    margin: 0 auto var(--spacing-xxxl);
    justify-items: stretch;
    box-sizing: border-box;
}

.service-item {
    text-align: center;
    padding: var(--spacing-lg);
    background-color: var(--color-light);
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 8px;
    transition: var(--transition-smooth);
}

.service-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
    border-color: rgba(0, 0, 0, 0.12);
}

.service-icon-text {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    margin-bottom: var(--spacing-lg);
}

.service-icon-text span {
    font-family: var(--font-serif);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 300;
    color: var(--color-primary);
    letter-spacing: 0.05em;
    line-height: 1.2;
}

.service-description {
    font-size: clamp(0.9rem, 1.5vw, 1rem);
    font-weight: 300;
    line-height: 1.8;
    color: var(--color-text);
    letter-spacing: 0.02em;
}

/* ===================================
   Company Section
   =================================== */
.company-section {
    padding: var(--spacing-xxxl) 0;
    background-color: var(--color-light);
}

.company-header {
    margin-bottom: var(--spacing-xl);
}

.company-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    max-width: 1200px;
    margin: 0 auto;
}

.company-subtitle {
    font-family: var(--font-serif);
    font-size: clamp(1.5rem, 2.5vw, 2rem);
    font-weight: 300;
    color: var(--color-primary);
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-lg);
}

/* Corporate Information */
.company-details {
    margin: 0;
}

.detail-row {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

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

.detail-row dt {
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--color-gray);
    letter-spacing: 0.05em;
}

.detail-row dd {
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 300;
    color: var(--color-text);
    line-height: 1.8;
    margin: 0;
}

.detail-row .jp-text {
    font-size: 0.875rem;
    color: var(--color-gray);
    display: block;
    margin-top: 0.25rem;
}

.contact-email {
    color: var(--color-text);
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-email:hover {
    color: var(--color-gold);
    text-decoration: underline;
}

/* FAQ Accordion */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.faq-item {
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-family: var(--font-sans);
    font-size: clamp(0.95rem, 1.5vw, 1.05rem);
    font-weight: 400;
    color: var(--color-primary);
    letter-spacing: 0.02em;
    transition: var(--transition-fast);
}

.faq-question:hover {
    color: var(--color-secondary);
}

.faq-icon {
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--color-gold);
    transition: var(--transition-fast);
    flex-shrink: 0;
    margin-left: var(--spacing-sm);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding-bottom: var(--spacing-md);
}

.faq-answer p {
    font-size: clamp(0.9rem, 1.3vw, 1rem);
    font-weight: 300;
    line-height: 1.9;
    color: var(--color-text);
    letter-spacing: 0.02em;
    margin: 0;
}

/* ===================================
   Footer
   =================================== */
.footer {
    padding: var(--spacing-lg) 0;
    background-color: var(--color-footer-bg);
}

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

.footer-text {
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--color-text);
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-xs);
}

.footer-copyright {
    font-size: 0.75rem;
    font-weight: 300;
    color: var(--color-gray);
    letter-spacing: 0.05em;
    margin-top: var(--spacing-xs);
}

/* ===================================
   Fade In Animations
   =================================== */
.fade-in {
    opacity: 0;
    animation: fadeIn 1.5s ease forwards;
}

.fade-in-delay-1 {
    opacity: 0;
    animation: fadeIn 1.5s ease forwards;
    animation-delay: 0.4s;
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

.fade-in-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 1s ease, transform 1s ease;
}

.fade-in-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 1024px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4.5rem;
        --spacing-xxl: 6rem;
        --spacing-xxxl: 8rem;
    }
    
    .service-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
    
    .container-wide {
        padding: 0 2rem;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-lg: 2.5rem;
        --spacing-xl: 3.5rem;
        --spacing-xxl: 5rem;
        --spacing-xxxl: 6rem;
    }
    
    .hero-logo {
        width: clamp(250px, 60vw, 500px);
    }
    
    .hero-subtitle {
        font-size: 0.75rem;
        letter-spacing: 0.12em;
    }
    
    .service-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .service-item {
        padding: var(--spacing-md);
    }
    
    .company-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .detail-row {
        grid-template-columns: 120px 1fr;
        gap: var(--spacing-sm);
    }
    
    .container-narrow,
    .container-wide {
        padding: 0 1.5rem;
    }
    
    .scroll-indicator {
        bottom: 2rem;
    }
    
    .story-text {
        text-align: left;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
        --spacing-xxl: 4rem;
        --spacing-xxxl: 5rem;
    }
    
    .hero-logo {
        width: clamp(200px, 70vw, 400px);
    }
    
    .hero-subtitle {
        font-size: 0.7rem;
        letter-spacing: 0.1em;
    }
    
    .quote-large {
        font-size: 1.5rem;
    }
}