/* ========================================
   CSS Variables & Reset
======================================== */
:root {
    /* Colors - Light Blue Gray Theme */
    --color-bg: #f8fafb;
    --color-bg-alt: #ffffff;
    --color-bg-card: #ffffff;
    --color-bg-hero: linear-gradient(135deg, #e8f0f5 0%, #f0f5f8 50%, #f5f8fa 100%);
    
    /* Text Colors */
    --color-text: #2d3a45;
    --color-text-muted: #5a6d7a;
    --color-text-light: #8a9aa8;
    
    /* Primary - Blue Gray */
    --color-primary: #5b8a9a;
    --color-primary-light: #7ba8b8;
    --color-primary-dark: #4a7585;
    --color-primary-pale: #e8f2f5;
    
    /* Accent - Warm Terracotta (for Coffee) */
    --color-accent: #b87d5c;
    --color-accent-light: #d49a7a;
    --color-accent-pale: #faf3ef;
    
    /* UI Colors */
    --color-border: #e2e8ed;
    --color-border-light: #f0f4f7;
    --color-shadow: rgba(45, 58, 69, 0.08);
    --color-shadow-hover: rgba(45, 58, 69, 0.12);
    
    /* Typography - Noto Sans JP Only */
    --font-main: 'Noto Sans JP', sans-serif;
    
    /* Spacing */
    --section-padding: clamp(80px, 12vw, 140px);
    --container-padding: clamp(20px, 5vw, 60px);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
}

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

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

body {
    font-family: var(--font-main);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.8;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

ul {
    list-style: none;
}

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

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

/* ========================================
   Navigation
======================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    background: #1a3a5c;
    transition: var(--transition-base);
}

.nav.scrolled {
    background: #1a3a5c;
    backdrop-filter: blur(20px);
    padding: 12px 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-text {
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: #ffffff;
}

.nav-menu {
    display: flex;
    gap: 40px;
}

.nav-menu a {
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.03em;
    color: rgba(255, 255, 255, 0.85);
    transition: var(--transition-fast);
    position: relative;
    padding: 4px 0;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: #ffffff;
    transition: var(--transition-base);
    border-radius: 1px;
}

.nav-menu a:hover {
    color: #ffffff;
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: #ffffff;
    transition: var(--transition-base);
    border-radius: 1px;
}

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

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

/* ========================================
   Hero Carousel
======================================== */
.hero-carousel {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.carousel-slides {
    position: relative;
    width: 100%;
    height: 100%;
}

.carousel-slide {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}

.carousel-slide.active {
    opacity: 1;
}

/* プレースホルダー（画像がない場合） */
.carousel-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #2a4a6c 0%, #1a3a5c 50%, #0d2a4a 100%);
    color: rgba(255, 255, 255, 0.4);
}

.carousel-placeholder span {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    margin-bottom: 8px;
}

.carousel-placeholder p {
    font-size: 0.9rem;
    letter-spacing: 0.05em;
}

/* 画像が読み込まれたらプレースホルダーを非表示 */
.carousel-slide.has-image .carousel-placeholder {
    display: none;
}

/* カルーセルインジケーター */
.carousel-indicators {
    position: absolute;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 10;
}

.carousel-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.6);
    background: transparent;
    cursor: pointer;
    transition: var(--transition-fast);
    padding: 0;
}

.carousel-indicator:hover {
    border-color: #ffffff;
    background: rgba(255, 255, 255, 0.3);
}

.carousel-indicator.active {
    background: #ffffff;
    border-color: #ffffff;
}

/* ヒーローオーバーレイ */
.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        rgba(26, 58, 92, 0.3) 0%,
        rgba(26, 58, 92, 0.5) 50%,
        rgba(26, 58, 92, 0.7) 100%
    );
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 0 var(--container-padding);
    max-width: 800px;
}

.hero-badge {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: #ffffff;
    padding: 10px 24px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 30px;
    margin-bottom: 32px;
}

.hero-title {
    margin-bottom: 28px;
}

.hero-title-main {
    display: block;
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    font-weight: 400;
    letter-spacing: 0.3em;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 8px;
}

.hero-title-name {
    display: block;
    font-size: clamp(2.2rem, 6vw, 3.5rem);
    font-weight: 700;
    letter-spacing: 0.08em;
    color: #ffffff;
    line-height: 1.3;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.hero-description {
    font-size: clamp(0.95rem, 2vw, 1.1rem);
    font-weight: 400;
    color: rgba(255, 255, 255, 0.9);
    line-height: 2;
    margin-bottom: 40px;
    text-shadow: 0 1px 10px rgba(0, 0, 0, 0.3);
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 36px;
    font-family: var(--font-main);
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    border-radius: var(--radius-md);
    transition: var(--transition-base);
    cursor: pointer;
}

.btn-primary {
    background: var(--color-primary);
    color: #ffffff;
    border: none;
    box-shadow: 0 4px 20px rgba(91, 138, 154, 0.3);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(91, 138, 154, 0.4);
}

.btn-outline {
    background: transparent;
    color: #ffffff;
    border: 1.5px solid rgba(255, 255, 255, 0.5);
}

.btn-outline:hover {
    border-color: #ffffff;
    color: #ffffff;
    background: rgba(255, 255, 255, 0.15);
}

/* Hero Scroll Indicator */
.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    z-index: 2;
}

.scroll-line {
    width: 1px;
    height: 50px;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.8), transparent);
    animation: scrollPulse 2s infinite ease-in-out;
}

@keyframes scrollPulse {
    0%, 100% { transform: scaleY(1); opacity: 1; }
    50% { transform: scaleY(0.6); opacity: 0.5; }
}

/* ========================================
   Section Common Styles
======================================== */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.section-title {
    font-size: clamp(1.6rem, 4vw, 2.2rem);
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--color-text);
}

/* ========================================
   About Section
======================================== */
.about {
    position: relative;
    padding: var(--section-padding) 0;
    background: var(--color-bg-alt);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-text {
    max-width: 500px;
}

.about-lead {
    font-size: 1.15rem;
    font-weight: 500;
    line-height: 2;
    margin-bottom: 20px;
    color: var(--color-text);
}

.about-text p {
    color: var(--color-text-muted);
    line-height: 2;
}

.about-info {
    display: grid;
    gap: 20px;
}

.info-card {
    background: var(--color-bg);
    padding: 28px 32px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-light);
    transition: var(--transition-base);
}

.info-card:hover {
    box-shadow: 0 8px 30px var(--color-shadow);
    transform: translateY(-4px);
}

.info-icon {
    width: 44px;
    height: 44px;
    margin-bottom: 16px;
    color: var(--color-primary);
}

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

.info-card h3 {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-text-light);
    margin-bottom: 8px;
}

.info-card p {
    font-size: 1rem;
    font-weight: 500;
    line-height: 1.8;
    color: var(--color-text);
}

/* ========================================
   Services Section
======================================== */
.services {
    position: relative;
    padding: var(--section-padding) 0;
    background: var(--color-bg);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.service-card {
    position: relative;
    background: var(--color-bg-alt);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-light);
    overflow: hidden;
    transition: var(--transition-base);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 50px var(--color-shadow-hover);
}

.service-visual {
    position: relative;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.service-card[data-service="it"] .service-visual {
    background: linear-gradient(135deg, var(--color-primary-pale) 0%, rgba(91, 138, 154, 0.05) 100%);
}

.service-card[data-service="coffee"] .service-visual {
    background: linear-gradient(135deg, var(--color-accent-pale) 0%, rgba(184, 125, 92, 0.05) 100%);
}

.service-icon {
    position: relative;
    z-index: 2;
    width: 72px;
    height: 72px;
    padding: 18px;
    border-radius: 50%;
    transition: var(--transition-base);
}

.service-card[data-service="it"] .service-icon {
    color: var(--color-primary);
    background: rgba(91, 138, 154, 0.15);
}

.service-card[data-service="coffee"] .service-icon {
    color: var(--color-accent);
    background: rgba(184, 125, 92, 0.15);
}

.service-card:hover .service-icon {
    transform: scale(1.1);
}

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

.service-content {
    padding: 36px;
}

.service-number {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    margin-bottom: 12px;
}

.service-card[data-service="it"] .service-number {
    color: var(--color-primary);
}

.service-card[data-service="coffee"] .service-number {
    color: var(--color-accent);
}

.service-title {
    font-size: 1.4rem;
    font-weight: 700;
    line-height: 1.5;
    margin-bottom: 16px;
    color: var(--color-text);
}

.service-description {
    color: var(--color-text-muted);
    line-height: 1.9;
    margin-bottom: 24px;
    font-size: 0.95rem;
}

.service-list {
    display: grid;
    gap: 10px;
}

.service-list li {
    position: relative;
    padding-left: 18px;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.service-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

.service-card[data-service="it"] .service-list li::before {
    background: var(--color-primary);
}

.service-card[data-service="coffee"] .service-list li::before {
    background: var(--color-accent);
}

/* ========================================
   Contact Section
======================================== */
.contact {
    position: relative;
    padding: var(--section-padding) 0;
    background: var(--color-bg-alt);
}

.contact-content {
    max-width: 700px;
    margin: 0 auto;
}

.contact-intro {
    text-align: center;
    margin-bottom: 40px;
}

.contact-intro p {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    line-height: 2;
}

.contact-form-wrapper {
    background: var(--color-bg);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    padding: 40px;
}

.google-form-container {
    min-height: 500px;
}

.google-form-container iframe {
    width: 100%;
    min-height: 600px;
    border: none;
    border-radius: var(--radius-sm);
}

.form-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 350px;
    text-align: center;
    color: var(--color-text-muted);
}

.form-placeholder-icon {
    width: 56px;
    height: 56px;
    margin-bottom: 20px;
    color: var(--color-primary);
    opacity: 0.5;
}

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

.form-placeholder-text {
    font-size: 1.05rem;
    font-weight: 500;
    margin-bottom: 12px;
    color: var(--color-text-muted);
}

.form-placeholder-note {
    font-size: 0.85rem;
    color: var(--color-text-light);
    line-height: 1.8;
}

/* ========================================
   Footer
======================================== */
.footer {
    background: #f0f4f7;
    padding: 60px 0 32px;
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    margin-bottom: 48px;
}

.footer-brand {
    max-width: 280px;
}

.footer-logo {
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--color-primary-dark);
}

.footer-tagline {
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    color: var(--color-text-light);
    margin-top: 10px;
}

.footer-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.footer-info h4 {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: 14px;
}

.footer-address p {
    color: var(--color-text-muted);
    line-height: 1.8;
    font-size: 0.9rem;
}

.footer-links ul {
    display: grid;
    gap: 10px;
}

.footer-links a {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

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

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.copyright {
    font-size: 0.8rem;
    color: var(--color-text-light);
    letter-spacing: 0.03em;
}

/* ========================================
   Animations
======================================== */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    animation: fadeIn 0.8s forwards;
}

.fade-in:nth-child(1) { animation-delay: 0.1s; }
.fade-in:nth-child(2) { animation-delay: 0.25s; }
.fade-in:nth-child(3) { animation-delay: 0.4s; }
.fade-in:nth-child(4) { animation-delay: 0.55s; }

@keyframes fadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: var(--transition-slow);
}

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

/* ========================================
   Responsive Design
======================================== */
@media (max-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-text {
        max-width: 100%;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 70px;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: #1a3a5c;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 36px;
        transition: var(--transition-base);
        box-shadow: -10px 0 40px rgba(0, 0, 0, 0.3);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-toggle {
        display: flex;
        z-index: 1001;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 260px;
    }
    
    .service-visual {
        height: 160px;
    }
    
    .service-content {
        padding: 28px;
    }
    
    .contact-form-wrapper {
        padding: 24px;
    }
    
    .footer-info {
        grid-template-columns: 1fr;
        gap: 28px;
    }
}

@media (max-width: 480px) {
    .hero-badge {
        font-size: 0.7rem;
        padding: 8px 18px;
    }
    
    .info-card {
        padding: 22px 24px;
    }
    
    .service-content {
        padding: 24px;
    }
    
    .service-title {
        font-size: 1.2rem;
    }
    
    .contact-form-wrapper {
        padding: 20px;
    }
}