/* ==============================================
 * 株式会社ドリルアンドホール | Visual Design Guidelines (v3.1 - Logo Added)
 * ==============================================
 */

:root {
    /* Color Palette - Inverted */
    --color-black: #FFFFFF;
    --color-white: #000000;
    --color-gray-10: #0D0D0D;
    --color-gray-20: #1F1F1F;

    /* Typography */
    --font-heading: 'Space Grotesk', 'Noto Sans JP', sans-serif;
    --font-body: 'Inter', 'Noto Sans JP', sans-serif;

    /* Motion */
    --transition-duration: 300ms;
    --transition-timing: ease-in-out;
}

/* ==============================================
 * 基本設定とリセット
 * ==============================================
 */

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--color-white);
    color: var(--color-black);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

h1, h2, h3 {
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: 0.05em;
    line-height: 1.2;
}

p {
    margin-bottom: 1em;
}

a {
    color: inherit;
    text-decoration: none;
    transition: opacity var(--transition-duration) var(--transition-timing);
}

a:hover {
    opacity: 0.7;
}

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

.container {
    width: 90%;
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
}

section {
    padding: 120px 0;
}

/* ==============================================
 * Three.js Canvas (背景)
 * ==============================================
 */
#bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background-color: var(--color-white);
}

/* ==============================================
 * Company Logo (新規追加)
 * ==============================================
 */
.company-logo {
    position: fixed;
    top: 20px;
    left: 20px;
    width: 100px;
    height: 100px;
    z-index: 1000;
    border-radius: 8px;
    overflow: hidden;
    transition: transform var(--transition-duration) var(--transition-timing);
    background-color: transparent;
}

.company-logo:hover {
    transform: scale(1.05);
}

.company-logo img {
    width: 100px;
    height: 100px;
    object-fit: contain;
    padding: 0;
    /* 300×300pxの画像を100×100pxで表示 */
    max-width: 100px;
    max-height: 100px;
}

/* ==============================================
 * Stickyナビゲーション（ロゴ分のスペース調整）
 * ==============================================
 */
.sticky-nav {
    position: fixed;
    top: 0;
    right: 0;
    padding: 32px 40px;
    z-index: 100;
    /* ロゴ分のスペースを考慮してナビゲーションを調整 */
    margin-left: 140px; /* ロゴ幅 + マージン */
}

.sticky-nav ul {
    list-style: none;
    display: flex;
    gap: 24px;
}

.sticky-nav a {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 16px;
    color: var(--color-black);
}

/* ==============================================
 * Hero Section
 * ==============================================
 */
.hero {
    height: 100vh;
    min-height: 600px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 24px;
}

#hero-word-container {
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-word {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 10vw, 5rem);
    font-weight: 700;
    color: var(--color-black);
    text-decoration-color: var(--color-black);
    text-decoration-thickness: 3px;
}

.hero-mission {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 600px;
}

.hero-mission h2 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.hero-mission p {
    font-size: 1rem;
}

.scroll-indicator {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 1px;
    height: 50px;
    background-color: var(--color-gray-20);
    animation: scroll-down 1.5s ease-in-out infinite;
}

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

/* ==============================================
 * 各セクションのスタイル
 * ==============================================
 */

.section-title {
    text-align: center;
    font-size: 3rem;
    margin-bottom: 80px;
}

/* Services Section */
#services {
    background-color: var(--color-white);
}

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

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

.service-item .icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 24px auto;
    color: var(--color-black);
}

.service-item h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

/* About Me Section */
#about {
    background-color: var(--color-gray-10);
}

.about-grid {
    display: grid;
    grid-template-columns: 30% 70%;
    align-items: center;
    gap: 40px;
    max-width: 1600px;
    margin: 0 auto;
}

.about-image {
    /* フィルター効果を削除してナチュラルな表示に */
}

.about-image img {
    width: 100%;
    object-fit: cover;
    aspect-ratio: 1 / 1.2;
    border-radius: 8px;
    transition: transform var(--transition-duration) var(--transition-timing);
}

.about-image img:hover {
    transform: scale(1.02);
}

.about-content {
    max-width: 600px;
    line-height: 1.8;
}

.about-content h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.about-content p {
    margin-bottom: 1.5em;
    font-size: 1.1rem;
}

/* Contact Section */
#contact {
    background-color: var(--color-white);
    color: var(--color-black);
    text-align: center;
}

.contact-cta {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact-email {
    font-size: 1.5rem;
    font-family: var(--font-body);
    border-bottom: 1px solid var(--color-gray-20);
    display: inline-block;
    padding-bottom: 4px;
}

.footer {
    margin-top: 80px;
    font-size: 0.875rem;
    color: var(--color-black);
}

/* ==============================================
 * スクロールアニメーション
 * ==============================================
 */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-duration) var(--transition-timing), transform var(--transition-duration) var(--transition-timing);
}

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

/* ==============================================
 * レスポンシブ対応（ロゴ対応）
 * ==============================================
 */

@media (max-width: 900px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
        max-width: 100%;
    }
    
    .about-content {
        padding: 0 20px;
        max-width: none;
    }
}

@media (max-width: 768px) {
    /* ロゴサイズをモバイルで調整 */
    .company-logo {
        width: 80px;
        height: 80px;
        top: 15px;
        left: 15px;
    }

    .company-logo img {
        width: 80px;
        height: 80px;
        max-width: 80px;
        max-height: 80px;
        padding: 0;
    }

    /* ナビゲーションをモバイルで調整 */
    .sticky-nav {
        padding: 24px 20px;
        margin-left: 95px; /* モバイル時のロゴ幅 + マージン */
    }

    .sticky-nav ul {
        gap: 16px;
    }

    .sticky-nav a {
        font-size: 14px;
    }

    .section-title {
        font-size: 2.5rem;
        margin-bottom: 60px;
    }

    .services-grid {
        grid-template-columns: 1fr;
        gap: 60px;
    }
}