/* ==========================================================================
   CSS Custom Properties & Reset
   ========================================================================== */
:root {
    /* Color Palette - Minimal & Corporate */
    --c-bg: #FFFFFF;
    --c-bg-light: #F8F9FA;
    --c-text: #1A1A1A;
    --c-text-light: #666666;
    --c-accent: #0A192F;
    /* Deep Navy Blue */
    --c-accent-hover: #112B50;
    --c-border: #EAEAEA;
    --c-white: #FFFFFF;

    /* Typography */
    --font-base: 'Inter', 'Noto Sans JP', sans-serif;

    /* Spacing */
    --space-s: 1.5rem;
    --space-m: 3rem;
    --space-l: 6rem;
    --space-xl: 10rem;

    /* Effects */
    --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.05);
    --transition-base: 0.3s cubic-bezier(0.25, 1, 0.5, 1);
}

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

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

body {
    font-family: var(--font-base);
    color: var(--c-text);
    background-color: var(--c-bg);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul,
ol {
    list-style: none;
}

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

/* ==========================================================================
   Utility Classes
   ========================================================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 5%;
}

.section {
    padding: var(--space-xl) 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--space-l);
    position: relative;
    letter-spacing: -0.02em;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: var(--c-accent);
}

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

.text-center.section-title::after {
    left: 50%;
    transform: translateX(-50%);
}

.text-accent {
    color: var(--c-accent);
}

.bg-light {
    background-color: var(--c-bg-light);
}

.bg-accent {
    background-color: var(--c-accent);
    color: var(--c-white);
}

.mb-4 {
    margin-bottom: var(--space-s);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-primary {
    background-color: var(--c-accent);
    color: var(--c-white);
}

.btn-primary:hover {
    background-color: var(--c-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(10, 25, 47, 0.3);
}

/* ==========================================================================
   Header
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1.5rem 0;
    z-index: 1000;
    transition: all var(--transition-base);
}

.header.is-scrolled {
    padding: 1rem 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.header__inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 4%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header__logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
}

.header__list {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.header__link {
    font-size: 0.9rem;
    font-weight: 500;
    position: relative;
}

.header__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--c-accent);
    transition: width var(--transition-base);
}

.header__link:hover::after {
    width: 100%;
}

.header__btn {
    background-color: var(--c-text);
    color: var(--c-white);
    padding: 0.75rem 1.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    transition: background-color var(--transition-base);
}

.header__btn:hover {
    background-color: var(--c-accent);
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    padding-left: 10%;
    position: relative;
    overflow: hidden;
}

.hero__subtitle {
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--c-text-light);
    margin-bottom: 2rem;
    text-transform: uppercase;
}

.hero__title {
    font-size: 4.5rem;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.04em;
    margin-bottom: 3rem;
}

/* Background Abstract Objects */
.hero__bg-object {
    position: absolute;
    z-index: -1;
    border-radius: 50%;
    opacity: 0.03;
    background-color: var(--c-accent);
}

.shape-1 {
    width: 800px;
    height: 800px;
    top: -200px;
    right: -200px;
}

.shape-2 {
    width: 400px;
    height: 400px;
    bottom: -100px;
    right: 30%;
}

.hero__scroll {
    position: absolute;
    bottom: 50px;
    left: 10%;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 15px;
}

.scroll-text {
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    writing-mode: vertical-rl;
}

.scroll-line {
    width: 1px;
    height: 60px;
    background-color: rgba(26, 26, 26, 0.2);
    position: relative;
    overflow: hidden;
}

.scroll-line::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--c-accent);
    animation: scrollLine 2s infinite ease-in-out;
}

@keyframes scrollLine {
    0% {
        transform: translateY(-100%);
    }

    50% {
        transform: translateY(0);
    }

    100% {
        transform: translateY(100%);
    }
}

/* ==========================================================================
   About
   ========================================================================== */
.about__content {
    max-width: 800px;
    margin-left: auto;
}

.about__text {
    font-size: 1.2rem;
    line-height: 2;
    margin-bottom: 2rem;
}



/* ==========================================================================
   Origin (Brand Name Meaning)
   ========================================================================== */
.origin__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 4rem;
    flex-wrap: wrap;
}

.origin__visual {
    flex: 1.2;
    min-width: 320px;
}

.origin-word {
    display: flex;
    align-items: baseline;
    margin-bottom: 0.5rem;
    border-bottom: 1px solid var(--c-border);
    padding-bottom: 0.5rem;
    transition: all var(--transition-base);
}

.origin-word:hover {
    padding-left: 1rem;
    border-color: var(--c-accent);
}

.origin-letter {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--c-accent);
    width: 3.5rem;
    line-height: 1.2;
    transition: transform var(--transition-base);
}

.origin-word:hover .origin-letter {
    transform: scale(1.1);
}

.origin-detail {
    display: flex;
    align-items: baseline;
    gap: 1.5rem;
    flex: 1;
}

.origin-en {
    font-size: 1.25rem;
    font-weight: 300;
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

.origin-jp {
    font-size: 0.85rem;
    color: var(--c-text-light);
}

/* Removed .origin-plus */

.origin-faith {
    display: flex;
    align-items: baseline;
    transition: all var(--transition-base);
    padding-top: 1rem;
    padding-bottom: 0.5rem;
    margin-top: 0.5rem;
}

.origin-faith:hover {
    padding-left: 1rem;
}

.origin-faith .origin-letter {
    width: auto;
    font-size: 2.25rem;
    letter-spacing: 0.05em;
    color: var(--c-text);
}

.origin-faith:hover .origin-letter {
    color: var(--c-accent);
}

.origin__text {
    flex: 0.8;
    min-width: 300px;
    padding: 3rem;
    background-color: var(--c-bg-light);
    border: 1px solid var(--c-border);
}

.origin__title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    letter-spacing: 0.05em;
    color: var(--c-text);
    line-height: 1.4;
}

.origin__title::after {
    content: '';
    display: block;
    width: 40px;
    height: 2px;
    background-color: var(--c-accent);
    margin-top: 1rem;
}

.origin__text p {
    color: var(--c-text-light);
    line-height: 2;
    font-size: 0.95rem;
}

/* ==========================================================================
   Services
   ========================================================================== */
.services__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--c-white);
    padding: 3rem 2rem;
    border: 1px solid var(--c-border);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    position: relative;
    overflow: hidden;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-soft);
    border-color: transparent;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: var(--c-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card__number {
    font-size: 3rem;
    font-weight: 300;
    color: rgba(10, 25, 47, 0.1);
    position: absolute;
    top: 1rem;
    right: 2rem;
}

.service-card__icon {
    width: 60px;
    height: 60px;
    background-color: rgba(10, 25, 47, 0.05);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: var(--c-accent);
    transition: all var(--transition-base);
}

.service-card:hover .service-card__icon {
    background-color: var(--c-accent);
    color: var(--c-white);
    transform: rotate(5deg) scale(1.05);
}

.service-card__title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.service-card__desc {
    color: var(--c-text-light);
    line-height: 1.8;
}

/* Removed Works / Track Record */

/* ==========================================================================
   Company
   ========================================================================== */
.company__table {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    border-collapse: collapse;
}

.company__table th,
.company__table td {
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--c-border);
    text-align: left;
}

.company__table th {
    width: 25%;
    font-weight: 600;
    color: var(--c-accent);
}

.company__table tr:last-child th,
.company__table tr:last-child td {
    border-bottom: none;
}

/* Removed Contact Area */

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    background-color: #050c18;
    /* Darker navy */
    color: var(--c-white);
    padding: 4rem 0 2rem;
}

.footer__inner {
    display: flex;
    justify-content: space-between;
    margin-bottom: 3rem;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer__logo {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.footer__logo .text-accent {
    color: var(--c-white);
}

.footer__desc {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

.footer__links {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.footer__links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

.footer__links a:hover {
    color: var(--c-white);
}

.footer__copyright {
    text-align: center;
    color: rgba(255, 255, 255, 0.3);
    font-size: 0.8rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* ==========================================================================
   Animations
   ========================================================================== */
.fade-in-up {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s cubic-bezier(0.25, 1, 0.5, 1) forwards;
}

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

.slide-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.25, 1, 0.5, 1),
        transform 0.8s cubic-bezier(0.25, 1, 0.5, 1);
}

.slide-up.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 992px) {
    .hero__title {
        font-size: 3.5rem;
    }

    .works__stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

@media (max-width: 768px) {
    :root {
        --space-l: 4rem;
        --space-xl: 5rem;
    }

    .header__list {
        display: none;
    }

    /* 省略: モバイルメニュー用 */
    .hero__title {
        font-size: 2.5rem;
    }

    .hero {
        padding-left: 5%;
    }

    .company__table th,
    .company__table td {
        display: block;
        width: 100%;
        padding: 0.5rem 0;
    }

    .company__table th {
        border-bottom: none;
        padding-top: 1.5rem;
    }

    .footer__inner {
        flex-direction: column;
    }
}