/**
 * ============================================
 * 株式会社サクラ工業 コーポレートサイト
 * 共通スタイルシート
 * ============================================
 * Version: 1.0.0
 * Last Updated: 2025
 * Author: SAKURA KOGYO Inc.
 * ============================================
 */

/* ============================================
   CSS Custom Properties (Variables)
   ============================================ */
:root {
    /* Brand Colors */
    --color-primary: #0a1628;
    --color-primary-light: #142441;
    --color-secondary: #1e3a5f;
    --color-accent: #d4a574;
    --color-accent-light: #e8c9a8;
    --color-accent-glow: rgba(212, 165, 116, 0.3);
    --color-sakura: #f0b8c4;
    
    /* Neutral Colors */
    --color-white: #ffffff;
    --color-gray-100: #f8f9fa;
    --color-gray-200: #e9ecef;
    --color-gray-300: #dee2e6;
    --color-gray-400: #ced4da;
    --color-gray-500: #adb5bd;
    --color-gray-600: #6c757d;
    --color-gray-700: #495057;
    --color-gray-800: #343a40;
    
    /* Typography */
    --font-serif: 'Noto Serif JP', serif;
    --font-sans: 'Noto Sans JP', sans-serif;
    --font-display: 'Outfit', sans-serif;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    --space-5xl: 8rem;
    
    /* Transitions */
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Layout */
    --header-height: 80px;
}

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

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

body {
    font-family: var(--font-sans);
    font-weight: 400;
    line-height: 1.8;
    color: var(--color-gray-800);
    background-color: var(--color-white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-base);
}

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul {
    list-style: none;
}

address {
    font-style: normal;
}

/* ============================================
   Utility Classes
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

.sp-only {
    display: none;
}

@media (max-width: 768px) {
    .sp-only {
        display: inline;
    }
    .hero-description br {
        display: none;
      }
}

/* ============================================
   Header
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    z-index: 1000;
    transition: var(--transition-base);
}

.header.scrolled {
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

.logo {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-main {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: 0.15em;
}

.logo-sub {
    font-family: var(--font-display);
    font-size: 0.7rem;
    font-weight: 400;
    color: var(--color-accent);
    letter-spacing: 0.3em;
}

/* ============================================
   Desktop Navigation
   ============================================ */
.nav-list {
    display: flex;
    align-items: center;
    gap: var(--space-2xl);
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-white);
    letter-spacing: 0.05em;
    position: relative;
    padding: var(--space-sm) 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: var(--transition-base);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-link--contact {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
    color: var(--color-primary);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-sm);
    font-weight: 600;
}

.nav-link--contact::after {
    display: none;
}

.nav-link--contact:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px var(--color-accent-glow);
}

/* Desktop nav link text wrapper - hide on desktop */
.nav-link-text {
    display: contents;
}

.nav-link-label {
    display: none;
}

.nav-link-number {
    display: none;
}

.nav-link-arrow {
    display: none;
}

.nav-link-jp {
    display: contents;
}

/* Hide mobile-only nav elements on desktop */
.mobile-nav-header {
    display: none;
}

.mobile-nav-footer {
    display: none;
}

.mobile-nav-decor {
    display: none;
}

.mobile-nav-canvas {
    display: none;
}

/* ============================================
   Hamburger Button
   ============================================ */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 48px;
    height: 48px;
    padding: 0;
    z-index: 1002;
    position: relative;
}

.hamburger-inner {
    position: relative;
    width: 26px;
    height: 18px;
}

.hamburger span {
    display: block;
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--color-white);
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.27, 1.55);
    transform-origin: center;
}

.hamburger span:nth-child(1) {
    top: 0;
    width: 100%;
}

.hamburger span:nth-child(2) {
    top: 50%;
    transform: translateY(-50%);
    width: 70%;
    margin-left: auto;
    right: 0;
    left: auto;
}

.hamburger span:nth-child(3) {
    bottom: 0;
    width: 85%;
}

.hamburger.active span:nth-child(1) {
    top: 50%;
    transform: translateY(-50%) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(20px);
}

.hamburger.active span:nth-child(3) {
    bottom: 50%;
    transform: translateY(50%) rotate(-45deg);
    width: 100%;
}

/* ============================================
   Mobile Navigation
   ============================================ */
@media (max-width: 900px) {
    .hamburger {
        display: flex;
    }
    
    .nav {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        height: 100dvh;
        background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 50%, var(--color-secondary) 100%);
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        opacity: 0;
        visibility: hidden;
        transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 1001;
        overflow-x: hidden;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .nav.active {
        opacity: 1;
        visibility: visible;
    }

    /* Decorative corner elements */
    .mobile-nav-decor {
        display: block;
        position: absolute;
        width: 80px;
        height: 80px;
        border: 1px solid rgba(212, 165, 116, 0.2);
        pointer-events: none;
    }
    
    .mobile-nav-decor--top-left {
        top: 20px;
        left: 20px;
        border-right: none;
        border-bottom: none;
    }
    
    .mobile-nav-decor--top-right {
        top: 20px;
        right: 20px;
        border-left: none;
        border-bottom: none;
    }
    
    .mobile-nav-decor--bottom-left {
        bottom: 20px;
        left: 20px;
        border-right: none;
        border-top: none;
    }
    
    .mobile-nav-decor--bottom-right {
        bottom: 20px;
        right: 20px;
        border-left: none;
        border-top: none;
    }

    /* Mobile nav canvas */
    .mobile-nav-canvas {
        display: block;
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        pointer-events: none;
        z-index: 0;
    }

    /* Mobile header */
    .mobile-nav-header {
        display: block;
        position: absolute;
        top: 40px;
        left: 50%;
        transform: translateX(-50%);
        text-align: center;
        z-index: 1;
    }
    
    .mobile-nav-logo {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .mobile-nav-logo-main {
        font-family: var(--font-display);
        font-size: 1.8rem;
        font-weight: 700;
        color: var(--color-white);
        letter-spacing: 0.2em;
    }
    
    .mobile-nav-logo-sub {
        font-family: var(--font-display);
        font-size: 0.65rem;
        color: var(--color-accent);
        letter-spacing: 0.4em;
        margin-top: 4px;
    }

    .nav-list {
        flex-direction: column;
        gap: 0;
        padding: 0 var(--space-xl);
        width: 100%;
        max-width: 320px;
        position: relative;
        z-index: 1;
    }
    
    .nav-list li {
        width: 100%;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        opacity: 0;
        transform: translateX(-30px);
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    }
    
    .nav.active .nav-list li {
        opacity: 1;
        transform: translateX(0);
    }
    
    .nav.active .nav-list li:nth-child(1) {
        transition-delay: 0.1s;
    }
    
    .nav.active .nav-list li:nth-child(2) {
        transition-delay: 0.15s;
    }
    
    .nav.active .nav-list li:nth-child(3) {
        transition-delay: 0.2s;
    }
    
    .nav.active .nav-list li:nth-child(4) {
        transition-delay: 0.25s;
    }
    
    .nav-list li:last-child {
        border-bottom: none;
    }

    .nav-link {
        display: flex;
        align-items: center;
        gap: var(--space-lg);
        padding: var(--space-lg) var(--space-sm);
        width: 100%;
    }
    
    .nav-link::after {
        display: none;
    }
    
    .nav-link-number {
        display: block;
        font-family: var(--font-display);
        font-size: 0.7rem;
        color: var(--color-accent);
        opacity: 0.6;
        letter-spacing: 0.1em;
        min-width: 24px;
    }
    
    .nav-link-text {
        display: flex;
        flex-direction: column;
        gap: 2px;
        flex: 1;
    }
    
    .nav-link-label {
        display: block;
        font-family: var(--font-display);
        font-size: 0.65rem;
        color: var(--color-gray-400);
        letter-spacing: 0.15em;
        text-transform: uppercase;
    }
    
    .nav-link-jp {
        font-family: var(--font-serif);
        font-size: 1.1rem;
        font-weight: 500;
        color: var(--color-white);
        letter-spacing: 0.1em;
    }
    
    .nav-link-arrow {
        display: block;
        width: 20px;
        height: 20px;
        color: var(--color-gray-500);
        transition: var(--transition-base);
    }
    
    .nav-link:hover .nav-link-arrow,
    .nav-link:focus .nav-link-arrow {
        color: var(--color-accent);
        transform: translateX(4px);
    }

    .nav-link--contact {
        background: transparent;
        color: var(--color-white);
        padding: var(--space-lg) var(--space-sm);
        border-radius: 0;
    }
    
    .nav-link--contact .nav-link-jp {
        color: var(--color-accent);
    }

    /* Mobile footer */
    .mobile-nav-footer {
        display: block;
        position: absolute;
        bottom: 40px;
        left: 50%;
        transform: translateX(-50%);
        text-align: center;
        z-index: 1;
    }
    
    .mobile-nav-divider {
        width: 40px;
        height: 1px;
        background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
        margin: 0 auto var(--space-md);
    }
    
    .mobile-nav-copyright {
        font-family: var(--font-display);
        font-size: 0.65rem;
        color: var(--color-gray-500);
        letter-spacing: 0.2em;
    }
}

/* ============================================
   Mobile Navigation - Landscape Mode
   iPhone SE等の横向き表示時の重なり防止
   ============================================ */
@media (max-width: 900px) and (max-height: 500px) and (orientation: landscape) {
    .nav {
        justify-content: flex-start;
        padding: 60px var(--space-lg) var(--space-2xl);
    }
    
    /* ヘッダーロゴを相対配置に変更 */
    .mobile-nav-header {
        position: relative;
        top: auto;
        left: auto;
        transform: none;
        margin-bottom: var(--space-lg);
        flex-shrink: 0;
    }
    
    .mobile-nav-logo-main {
        font-size: 1.4rem;
    }
    
    .mobile-nav-logo-sub {
        font-size: 0.55rem;
    }
    
    /* ナビゲーションリストのコンパクト化 */
    .nav-list {
        max-width: 280px;
        flex-shrink: 0;
    }
    
    .nav-link {
        padding: var(--space-sm) var(--space-sm);
        gap: var(--space-md);
    }
    
    .nav-link-number {
        font-size: 0.6rem;
        min-width: 20px;
    }
    
    .nav-link-label {
        font-size: 0.55rem;
    }
    
    .nav-link-jp {
        font-size: 0.95rem;
    }
    
    .nav-link-arrow {
        width: 16px;
        height: 16px;
    }
    
    /* フッターを相対配置に変更 */
    .mobile-nav-footer {
        position: relative;
        bottom: auto;
        left: auto;
        transform: none;
        margin-top: var(--space-lg);
        flex-shrink: 0;
    }
    
    .mobile-nav-divider {
        margin-bottom: var(--space-sm);
    }
    
    .mobile-nav-copyright {
        font-size: 0.55rem;
    }
    
    /* 装飾コーナーを小さく */
    .mobile-nav-decor {
        width: 40px;
        height: 40px;
    }
    
    .mobile-nav-decor--top-left,
    .mobile-nav-decor--top-right {
        top: 10px;
    }
    
    .mobile-nav-decor--bottom-left,
    .mobile-nav-decor--bottom-right {
        bottom: 10px;
    }
    
    .mobile-nav-decor--top-left,
    .mobile-nav-decor--bottom-left {
        left: 10px;
    }
    
    .mobile-nav-decor--top-right,
    .mobile-nav-decor--bottom-right {
        right: 10px;
    }
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 50%, var(--color-secondary) 100%);
    overflow: hidden;
}

.hero-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center, transparent 0%, rgba(10, 22, 40, 0.4) 100%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    text-align: center;
    z-index: 10;
    padding: 0 var(--space-xl);
}

.hero-tagline {
    margin-bottom: var(--space-lg);
    overflow: hidden;
}

.hero-tagline-en {
    display: inline-block;
    font-family: var(--font-display);
    font-size: clamp(0.875rem, 2vw, 1.125rem);
    font-weight: 400;
    color: var(--color-accent);
    letter-spacing: 0.3em;
    text-transform: uppercase;
    animation: fadeInUp 1s ease 0.3s both;
}

.hero-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
}

.hero-title-line {
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: 0.1em;
    animation: fadeInUp 1s ease 0.5s both;
}

.hero-title-line--accent {
    color: var(--color-accent);
    text-shadow: 0 0 40px var(--color-accent-glow), 0 0 80px var(--color-accent-glow);
    animation: fadeInUp 1s ease 0.6s both, glow 3s ease-in-out infinite alternate;
}

@keyframes glow {
    from {
        text-shadow: 0 0 40px var(--color-accent-glow), 0 0 80px var(--color-accent-glow);
    }
    to {
        text-shadow: 0 0 60px var(--color-accent-glow), 0 0 120px var(--color-accent-glow), 0 0 160px var(--color-accent-glow);
    }
}

.hero-description {
    font-size: clamp(0.9rem, 2vw, 1.125rem);
    font-weight: 300;
    color: var(--color-gray-300);
    line-height: 2;
    margin-bottom: var(--space-2xl);
    animation: fadeInUp 1s ease 0.8s both;
}

.hero-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    animation: fadeInUp 1s ease 1s both;
    flex-wrap: wrap;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    border-radius: var(--radius-sm);
    transition: var(--transition-base);
}

.btn--primary {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
    color: var(--color-primary);
}

.btn--primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px var(--color-accent-glow);
}

.btn--outline {
    background: transparent;
    color: var(--color-white);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn--outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-arrow {
    width: 18px;
    height: 18px;
    transition: var(--transition-base);
}

.btn:hover .btn-arrow {
    transform: translateX(4px);
}

/* ============================================
   Hero Scroll Indicator
   ============================================ */
.hero-scroll {
    position: absolute;
    bottom: var(--space-2xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    animation: fadeInUp 1s ease 1.2s both;
}

.hero-scroll-text {
    font-family: var(--font-display);
    font-size: 0.75rem;
    color: var(--color-gray-400);
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

.hero-scroll-line {
    width: 1px;
    height: 50px;
    background: linear-gradient(to bottom, var(--color-accent), transparent);
    animation: scrollLine 2s ease-in-out infinite;
}

/* Hide scroll on mobile */
@media (max-width: 900px) {
    .hero-scroll {
        display: none;
    }
}

@keyframes scrollLine {
    0%, 100% {
        transform: scaleY(0);
        transform-origin: top;
    }
    50% {
        transform: scaleY(1);
        transform-origin: top;
    }
    51% {
        transform-origin: bottom;
    }
    100% {
        transform: scaleY(0);
        transform-origin: bottom;
    }
}

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

/* ============================================
   Features Section
   ============================================ */
.features {
    background: var(--color-gray-100);
    padding: var(--space-4xl) 0;
    margin-top: -60px;
    position: relative;
    z-index: 20;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

@media (max-width: 900px) {
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
}

.feature-card {
    background: var(--color-white);
    padding: var(--space-2xl);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
    opacity: 0;
    transform: translateY(30px);
}

.feature-card.animated {
    animation: fadeInUp 0.8s ease forwards;
}

.feature-card:nth-child(2).animated {
    animation-delay: 0.15s;
}

.feature-card:nth-child(3).animated {
    animation-delay: 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--space-lg);
    color: var(--color-accent);
}

.feature-icon svg {
    width: 100%;
    height: 100%;
}

.feature-title {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
}

.feature-text {
    font-size: 0.9rem;
    color: var(--color-gray-600);
    line-height: 1.8;
}

/* ============================================
   Section Common Styles
   ============================================ */
.section {
    padding: var(--space-5xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
    opacity: 0;
    transform: translateY(30px);
}

.section-header.animated {
    animation: fadeInUp 0.8s ease forwards;
}

.section-label {
    display: block;
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-accent);
    letter-spacing: 0.3em;
    text-transform: uppercase;
    margin-bottom: var(--space-sm);
}

.section-title {
    font-family: var(--font-serif);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.1em;
    margin-bottom: var(--space-lg);
}

.section-header--light .section-title {
    color: var(--color-white);
}

.section-line {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
    margin: 0 auto;
    border-radius: 2px;
}

.section-description {
    font-size: 1rem;
    color: var(--color-gray-600);
    margin-top: var(--space-lg);
    line-height: 1.8;
}

.section-header--light .section-description {
    color: var(--color-gray-300);
}

/* ============================================
   Company Section
   ============================================ */
.company-content {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--space-3xl);
    align-items: start;
}

@media (max-width: 900px) {
    .company-content {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
}

.company-image {
    opacity: 0;
    transform: translateY(30px);
}

.company-image.animated {
    animation: fadeInUp 0.8s ease forwards;
}

.company-image-frame {
    position: relative;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--radius-lg);
    padding: var(--space-3xl);
    overflow: hidden;
}

.company-image-frame::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse, var(--color-accent-glow) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.company-image-placeholder {
    position: relative;
    aspect-ratio: 4/3;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--color-accent);
    gap: var(--space-lg);
}

.company-image-placeholder svg {
    width: 80%;
    max-width: 200px;
    opacity: 0.6;
}

.company-image-placeholder span {
    font-family: var(--font-display);
    font-size: 1rem;
    letter-spacing: 0.2em;
    opacity: 0.8;
}

.company-info {
    opacity: 0;
    transform: translateY(30px);
}

.company-info.animated {
    animation: fadeInUp 0.8s ease 0.2s forwards;
}

.info-table {
    width: 100%;
    border-collapse: collapse;
}

.info-table th,
.info-table td {
    padding: var(--space-lg) 0;
    border-bottom: 1px solid var(--color-gray-200);
    vertical-align: top;
}

.info-table th {
    width: 120px;
    font-family: var(--font-serif);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-primary);
    text-align: left;
}

.info-table td {
    font-size: 0.95rem;
    color: var(--color-gray-700);
}

.info-label {
    display: block;
    font-size: 0.8rem;
    color: var(--color-gray-500);
    margin-bottom: var(--space-xs);
}

.info-link {
    color: var(--color-secondary);
}

.info-link:hover {
    color: var(--color-accent);
}

@media (max-width: 500px) {
    .info-table th,
    .info-table td {
        display: block;
        padding: var(--space-sm) 0;
    }
    
    .info-table th {
        width: 100%;
        border-bottom: none;
        padding-bottom: 0;
    }
    
    .info-table tr {
        border-bottom: 1px solid var(--color-gray-200);
    }
    
    .info-table tr:last-child {
        border-bottom: none;
    }
}

/* ============================================
   Message Section
   ============================================ */
.message {
    position: relative;
    background: var(--color-primary);
    overflow: hidden;
}

.message-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 50%, var(--color-secondary) 100%);
    opacity: 0.95;
}

.message-bg::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: radial-gradient(ellipse at right, var(--color-accent-glow) 0%, transparent 70%);
    opacity: 0.3;
}

.message .container {
    position: relative;
    z-index: 10;
}

.message-content {
    max-width: 700px;
    margin: 0 auto;
    opacity: 0;
    transform: translateY(30px);
}

.message-content.animated {
    animation: fadeInUp 0.8s ease forwards;
}

.message-text {
    margin-bottom: var(--space-2xl);
}

.message-text p {
    font-size: 1rem;
    color: var(--color-gray-300);
    line-height: 2.2;
    margin-bottom: var(--space-lg);
}

.message-text p:last-child {
    margin-bottom: 0;
}

.message-signature {
    text-align: right;
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.message-position {
    display: block;
    font-size: 0.85rem;
    color: var(--color-gray-400);
    margin-bottom: var(--space-xs);
}

.message-name {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-white);
    letter-spacing: 0.15em;
}

/* ============================================
   Works Section
   ============================================ */
.works-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
}

@media (max-width: 768px) {
    .works-grid {
        grid-template-columns: 1fr;
    }
}

.work-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
    opacity: 0;
    transform: translateY(30px);
}

.work-card.animated {
    animation: fadeInUp 0.8s ease forwards;
}

.work-card:nth-child(2).animated {
    animation-delay: 0.1s;
}

.work-card:nth-child(3).animated {
    animation-delay: 0.2s;
}

.work-card:nth-child(4).animated {
    animation-delay: 0.3s;
}

.work-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.work-card-image {
    position: relative;
    aspect-ratio: 16/10;
    background: linear-gradient(135deg, var(--color-gray-100), var(--color-gray-200));
    overflow: hidden;
}

.work-card-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray-400);
    padding: var(--space-xl);
}

.work-card-placeholder svg {
    width: 60%;
    max-width: 180px;
    opacity: 0.5;
}

.work-card-overlay {
    position: absolute;
    top: var(--space-md);
    left: var(--space-md);
}

.work-card-category {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background: var(--color-primary);
    color: var(--color-white);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    border-radius: var(--radius-sm);
}

.work-card-content {
    padding: var(--space-xl);
}

.work-card-title {
    font-family: var(--font-serif);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.work-card-description {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    line-height: 1.8;
}

/* ============================================
   Contact Section
   ============================================ */
.contact {
    position: relative;
    background: var(--color-primary);
    overflow: hidden;
}

.contact-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
}

.contact-bg::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse, var(--color-accent-glow) 0%, transparent 60%);
    opacity: 0.2;
}

.contact .container {
    position: relative;
    z-index: 10;
}

.contact-content {
    max-width: 600px;
    margin: 0 auto;
}

.contact-cards {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.contact-card {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    background: rgba(255, 255, 255, 0.05);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-base);
    opacity: 0;
    transform: translateY(30px);
}

.contact-card.animated {
    animation: fadeInUp 0.8s ease forwards;
}

.contact-card:nth-child(2).animated {
    animation-delay: 0.1s;
}

.contact-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(212, 165, 116, 0.3);
}

.contact-card-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    color: var(--color-accent);
    opacity: 0.8;
}

.contact-card-icon svg {
    width: 100%;
    height: 100%;
}

.contact-card-content {
    flex-grow: 1;
    min-width: 0;
}

.contact-card-label {
    display: block;
    font-size: 0.7rem;
    color: var(--color-gray-400);
    letter-spacing: 0.1em;
    margin-bottom: var(--space-xs);
}

.contact-card-value {
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-white);
    word-break: break-all;
}

@media (max-width: 400px) {
    .contact-card-value {
        font-size: 0.85rem;
    }
}

/* iPhone SE 横画面でのEmail表示改善 */
@media (max-height: 450px) and (orientation: landscape) {
    .contact-card-value {
        font-size: 0.8rem;
        word-break: normal;
        white-space: nowrap;
    }
    
    .contact-card {
        padding: var(--space-md) var(--space-lg);
    }
    
    .contact-card-icon {
        width: 32px;
        height: 32px;
    }
}

.contact-card-arrow {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    color: var(--color-gray-400);
    transition: var(--transition-base);
}

.contact-card:hover .contact-card-arrow {
    color: var(--color-accent);
    transform: translateX(4px);
}

.contact-address {
    display: flex;
    align-items: flex-start;
    gap: var(--space-lg);
    background: rgba(255, 255, 255, 0.05);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    opacity: 0;
    transform: translateY(30px);
}

.contact-address.animated {
    animation: fadeInUp 0.8s ease 0.2s forwards;
}

.contact-address-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    color: var(--color-accent);
    opacity: 0.7;
}

.contact-address-icon svg {
    width: 100%;
    height: 100%;
}

.contact-address-label {
    display: block;
    font-size: 0.75rem;
    color: var(--color-gray-400);
    letter-spacing: 0.1em;
    margin-bottom: var(--space-xs);
}

.contact-address-value {
    font-size: 0.95rem;
    color: var(--color-gray-300);
    line-height: 1.8;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--color-primary);
    padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding-bottom: var(--space-2xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

@media (max-width: 768px) {
    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: var(--space-2xl);
    }
}

.footer-logo {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.footer-logo-main {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: 0.15em;
}

.footer-logo-sub {
    font-family: var(--font-display);
    font-size: 0.7rem;
    font-weight: 400;
    color: var(--color-accent);
    letter-spacing: 0.3em;
}

.footer-tagline {
    font-size: 0.85rem;
    color: var(--color-gray-500);
    margin-top: var(--space-md);
    line-height: 1.6;
}

.footer-nav-list {
    display: flex;
    gap: var(--space-xl);
    flex-wrap: wrap;
}

@media (max-width: 768px) {
    .footer-nav-list {
        justify-content: center;
        gap: var(--space-md) var(--space-lg);
    }
}

@media (max-width: 400px) {
    .footer-nav-list {
        gap: var(--space-sm) var(--space-md);
    }
    
    .footer-nav-list a {
        font-size: 0.8rem;
    }
}

/* iPhone SE 横画面対応 */
@media (max-height: 450px) and (orientation: landscape) {
    .header {
        height: 60px;
    }
    
    .header-inner {
        padding: 0 var(--space-md);
    }
    
    .nav-list {
        gap: var(--space-lg);
    }
    
    .nav-link {
        font-size: 0.75rem;
        padding: var(--space-xs) 0;
    }
    
    .nav-link--contact {
        padding: var(--space-xs) var(--space-md);
        font-size: 0.75rem;
    }
    
    .logo-main {
        font-size: 1.2rem;
    }
    
    .logo-sub {
        font-size: 0.55rem;
    }
}

.footer-nav-list a {
    font-size: 0.9rem;
    color: var(--color-gray-400);
}

.footer-nav-list a:hover {
    color: var(--color-accent);
}

.footer-bottom {
    padding-top: var(--space-xl);
    text-align: center;
}

.footer-copyright {
    font-size: 0.8rem;
    color: var(--color-gray-500);
}

/* ============================================
   Back to Top Button
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    width: 50px;
    height: 50px;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition-base);
    z-index: 100;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--color-accent);
    transform: translateY(-3px);
}

.back-to-top svg {
    width: 24px;
    height: 24px;
}

/* ============================================
   Animation Utilities
   ============================================ */
[data-animate] {
    opacity: 0;
    transform: translateY(30px);
}

[data-animate].animated {
    animation: fadeInUp 0.8s ease forwards;
}

/* ============================================
   404 Error Page Styles
   ============================================ */
.error-page {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 50%, var(--color-secondary) 100%);
    overflow: hidden;
    padding-top: var(--header-height);
}

.error-content {
    position: relative;
    text-align: center;
    z-index: 10;
    padding: var(--space-2xl);
}

.error-code {
    font-family: var(--font-display);
    font-size: clamp(6rem, 20vw, 12rem);
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: var(--space-lg);
    text-shadow: 0 0 60px var(--color-accent-glow);
    animation: glow 3s ease-in-out infinite alternate;
}

.error-title {
    font-family: var(--font-serif);
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: 0.1em;
    margin-bottom: var(--space-lg);
}

.error-description {
    font-size: 1rem;
    color: var(--color-gray-300);
    line-height: 1.8;
    margin-bottom: var(--space-2xl);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================
   Privacy Policy Page Styles
   ============================================ */
.privacy-page {
    padding-top: calc(var(--header-height) + var(--space-3xl));
    padding-bottom: var(--space-4xl);
    min-height: 100vh;
    background: var(--color-gray-100);
}

.privacy-content {
    max-width: 800px;
    margin: 0 auto;
    background: var(--color-white);
    padding: var(--space-3xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

@media (max-width: 768px) {
    .privacy-content {
        padding: var(--space-xl);
        margin: 0 var(--space-md);
    }
}

.privacy-title {
    font-family: var(--font-serif);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--color-primary);
    text-align: center;
    margin-bottom: var(--space-3xl);
    letter-spacing: 0.1em;
}

.privacy-section {
    margin-bottom: var(--space-2xl);
}

.privacy-section:last-child {
    margin-bottom: 0;
}

.privacy-section-title {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-accent);
}

.privacy-section p,
.privacy-section li {
    font-size: 0.95rem;
    color: var(--color-gray-700);
    line-height: 2;
    margin-bottom: var(--space-md);
}

.privacy-section ul {
    list-style: disc;
    padding-left: var(--space-xl);
    margin-bottom: var(--space-md);
}

.privacy-section li {
    margin-bottom: var(--space-sm);
}

.privacy-date {
    text-align: right;
    font-size: 0.85rem;
    color: var(--color-gray-500);
    margin-top: var(--space-2xl);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-gray-200);
}