/* ========================================
   Axis4 - スタイルシート
   ======================================== */

:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-secondary: #64748b;
    --color-dark: #1e293b;
    --color-light: #f8fafc;
    --color-white: #ffffff;
    --color-border: #e2e8f0;
    --color-text: #334155;
    --color-text-light: #64748b;
    --color-accent: #10b981;

    --font-sans: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;

    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-white);
}

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

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

ul {
    list-style: none;
}

/* コンテナ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ========================================
   ナビゲーション
   ======================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-dark);
    letter-spacing: -0.02em;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-menu a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text);
    transition: color 0.2s;
}

.nav-menu a:hover {
    color: var(--color-primary);
}

.btn-contact {
    background: var(--color-primary);
    color: var(--color-white) !important;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    transition: background 0.2s;
}

.btn-contact:hover {
    background: var(--color-primary-dark);
}

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

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-dark);
    transition: 0.3s;
}

/* ========================================
   ボタン
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all 0.2s;
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--color-light);
    color: var(--color-text);
}

.btn-secondary:hover {
    background: var(--color-border);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--color-border);
    color: var(--color-text);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn-large {
    padding: 18px 40px;
    font-size: 1.1rem;
}

/* ========================================
   ヒーローセクション
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 24px 80px;
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    color: var(--color-white);
}

.hero-content {
    max-width: 800px;
}

.hero-title-main {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.02em;
    margin-bottom: 24px;
}

.hero-description {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 40px;
    line-height: 2;
}

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

/* ========================================
   ミッションセクション
   ======================================== */
.mission {
    padding: 100px 24px;
    background: var(--color-white);
}

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

.mission-content h2 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 16px;
}

.mission-lead {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--color-dark);
    line-height: 1.8;
    margin-bottom: 60px;
}

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

.mission-point {
    text-align: center;
    padding: 32px;
}

.point-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-light);
    border-radius: 50%;
    color: var(--color-primary);
}

.point-icon svg {
    width: 32px;
    height: 32px;
}

.mission-point h3 {
    font-size: 1.25rem;
    color: var(--color-dark);
    margin-bottom: 12px;
}

.mission-point p {
    font-size: 0.95rem;
    color: var(--color-text-light);
    line-height: 1.8;
}

/* ========================================
   セクション共通
   ======================================== */
.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 8px;
}

.section-subtitle {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-dark);
}

.section-more {
    text-align: center;
    margin-top: 48px;
}

/* ========================================
   記事セクション
   ======================================== */
.articles-section {
    padding: 100px 24px;
    background: var(--color-light);
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.article-card {
    display: block;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: all 0.3s;
    border: 1px solid var(--color-border);
}

.article-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.article-category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-primary);
    background: rgba(37, 99, 235, 0.1);
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 16px;
}

.article-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 12px;
    line-height: 1.5;
}

.article-card p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-bottom: 16px;
    line-height: 1.7;
}

.article-date {
    font-size: 0.8rem;
    color: var(--color-secondary);
}

/* 記事一覧ページ */
.articles-page {
    padding: 140px 24px 100px;
}

.articles-list {
    display: grid;
    gap: 24px;
}

.article-list-item {
    display: flex;
    gap: 32px;
    padding: 32px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all 0.3s;
}

.article-list-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.article-list-content {
    flex: 1;
}

.article-list-content h3 {
    font-size: 1.25rem;
    color: var(--color-dark);
    margin-bottom: 12px;
}

.article-list-content p {
    color: var(--color-text-light);
    margin-bottom: 16px;
}

.article-meta {
    display: flex;
    gap: 16px;
    font-size: 0.85rem;
    color: var(--color-secondary);
}

/* ========================================
   次回イベントセクション
   ======================================== */
.next-event {
    padding: 100px 24px;
    background: var(--color-white);
}

.event-featured {
    max-width: 800px;
    margin: 0 auto;
    background: var(--color-light);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.event-info {
    display: flex;
    gap: 40px;
    padding: 40px;
}

.event-date-block {
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100px;
    height: 100px;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: var(--radius-lg);
}

.event-month {
    font-size: 0.85rem;
    font-weight: 500;
}

.event-day {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1;
}

.event-weekday {
    font-size: 0.85rem;
}

.event-detail {
    flex: 1;
}

.event-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-accent);
    background: rgba(16, 185, 129, 0.1);
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 12px;
}

.event-detail h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 12px;
}

.event-detail > p {
    color: var(--color-text-light);
    margin-bottom: 20px;
}

.event-meta {
    display: flex;
    gap: 20px;
    margin-bottom: 24px;
    font-size: 0.9rem;
    color: var(--color-text);
}

.event-meta li {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* イベント一覧ページ */
.events-page {
    padding: 140px 24px 100px;
}

.events-list {
    display: grid;
    gap: 32px;
}

.event-card {
    display: flex;
    gap: 32px;
    padding: 32px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all 0.3s;
}

.event-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.event-card.past {
    opacity: 0.6;
}

.event-card-date {
    flex-shrink: 0;
    text-align: center;
    min-width: 80px;
}

.event-card-month {
    font-size: 0.85rem;
    color: var(--color-text-light);
}

.event-card-day {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.2;
}

.event-card-weekday {
    font-size: 0.85rem;
    color: var(--color-text-light);
}

.event-card-content {
    flex: 1;
}

.event-card-content h3 {
    font-size: 1.25rem;
    color: var(--color-dark);
    margin-bottom: 8px;
}

.event-card-content > p {
    color: var(--color-text-light);
    margin-bottom: 16px;
}

.event-card-meta {
    display: flex;
    gap: 16px;
    font-size: 0.85rem;
    color: var(--color-secondary);
}

/* ========================================
   企業向けセクション
   ======================================== */
.for-companies {
    padding: 100px 24px;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.companies-content {
    max-width: 700px;
}

.companies-text h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 16px;
}

.companies-lead {
    font-size: 1.1rem;
    color: var(--color-text);
    margin-bottom: 32px;
    line-height: 1.8;
}

.companies-benefits {
    margin-bottom: 32px;
}

.companies-benefits li {
    margin-bottom: 24px;
    padding-left: 24px;
    border-left: 3px solid var(--color-primary);
}

.companies-benefits strong {
    display: block;
    font-size: 1.1rem;
    color: var(--color-dark);
    margin-bottom: 4px;
}

.companies-benefits span {
    font-size: 0.95rem;
    color: var(--color-text-light);
}

/* ========================================
   メンバー募集CTA
   ======================================== */
.recruit-cta {
    padding: 100px 24px;
    background: var(--color-primary);
    color: var(--color-white);
    text-align: center;
}

.recruit-content h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.recruit-content p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 32px;
}

/* ========================================
   私たちについてページ
   ======================================== */
.about-page {
    padding: 140px 24px 100px;
}

.about-hero {
    text-align: center;
    margin-bottom: 80px;
}

.about-hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 24px;
}

.about-hero-lead {
    font-size: 1.25rem;
    color: var(--color-text);
    line-height: 1.8;
    max-width: 700px;
    margin: 0 auto;
}

.about-section {
    margin-bottom: 80px;
}

.about-section h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--color-primary);
}

.about-vision {
    display: grid;
    gap: 24px;
}

.vision-item {
    padding: 32px;
    background: var(--color-light);
    border-radius: var(--radius-lg);
}

.vision-item h3 {
    font-size: 1.25rem;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.vision-item p {
    color: var(--color-text);
    line-height: 1.8;
}

.about-activities {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.activity-item {
    padding: 32px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    text-align: center;
}

.activity-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-light);
    border-radius: 50%;
    color: var(--color-primary);
}

.activity-icon svg {
    width: 32px;
    height: 32px;
}

.activity-item h3 {
    font-size: 1.1rem;
    color: var(--color-dark);
    margin-bottom: 12px;
}

.activity-item p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.7;
}

/* 企業向けセクション（Aboutページ内） */
#for-companies {
    padding-top: 40px;
}

.company-benefits {
    display: grid;
    gap: 24px;
}

.benefit-item {
    display: flex;
    gap: 20px;
    padding: 28px;
    background: var(--color-light);
    border-radius: var(--radius-lg);
}

.benefit-number {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    color: var(--color-white);
    font-weight: 700;
    border-radius: 50%;
}

.benefit-content h4 {
    font-size: 1.1rem;
    color: var(--color-dark);
    margin-bottom: 8px;
}

.benefit-content p {
    color: var(--color-text-light);
    font-size: 0.95rem;
}

/* ========================================
   採用ページ
   ======================================== */
.recruit-page {
    padding: 140px 24px 100px;
}

.recruit-hero {
    text-align: center;
    margin-bottom: 80px;
}

.recruit-hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 24px;
}

.recruit-hero-lead {
    font-size: 1.25rem;
    color: var(--color-text);
    line-height: 1.8;
    max-width: 700px;
    margin: 0 auto;
}

.recruit-section {
    margin-bottom: 80px;
}

.recruit-section h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--color-primary);
}

.positions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.position-card {
    padding: 32px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all 0.3s;
}

.position-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.position-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-light);
    border-radius: var(--radius-md);
    color: var(--color-primary);
}

.position-icon svg {
    width: 24px;
    height: 24px;
}

.position-card h3 {
    font-size: 1.25rem;
    color: var(--color-dark);
    margin-bottom: 12px;
}

.position-card p {
    font-size: 0.95rem;
    color: var(--color-text-light);
    margin-bottom: 20px;
    line-height: 1.7;
}

.position-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.position-skills span {
    font-size: 0.8rem;
    padding: 4px 12px;
    background: var(--color-light);
    color: var(--color-text);
    border-radius: 20px;
}

.requirements-list {
    display: grid;
    gap: 16px;
}

.requirements-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 20px;
    background: var(--color-light);
    border-radius: var(--radius-md);
}

.requirements-list li::before {
    content: '✓';
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent);
    color: var(--color-white);
    border-radius: 50%;
    font-size: 0.8rem;
    font-weight: 700;
}

.apply-block {
    padding: 48px;
    background: var(--color-dark);
    color: var(--color-white);
    border-radius: var(--radius-xl);
    text-align: center;
}

.apply-block h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.apply-block p {
    opacity: 0.9;
    margin-bottom: 24px;
}

.apply-block .btn-primary {
    background: var(--color-white);
    color: var(--color-dark);
}

.apply-block .btn-primary:hover {
    background: var(--color-light);
}

/* ========================================
   フッター
   ======================================== */
.footer {
    background: var(--color-dark);
    color: var(--color-white);
    padding: 60px 24px 24px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.footer-brand .logo {
    color: var(--color-white);
    font-size: 1.5rem;
    display: block;
    margin-bottom: 8px;
}

.footer-brand p {
    font-size: 0.9rem;
    opacity: 0.7;
}

.footer-links {
    display: flex;
    gap: 32px;
}

.footer-links a {
    font-size: 0.9rem;
    opacity: 0.7;
    transition: opacity 0.2s;
}

.footer-links a:hover {
    opacity: 1;
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    font-size: 0.8rem;
    opacity: 0.5;
}

/* ========================================
   ページヒーロー（サブページ共通）
   ======================================== */
.page-hero {
    padding: 140px 24px 60px;
    background: linear-gradient(135deg, var(--color-dark) 0%, #334155 100%);
    color: var(--color-white);
    text-align: center;
}

.page-hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.page-hero p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* ========================================
   レスポンシブ
   ======================================== */
@media (max-width: 1024px) {
    .mission-points {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .articles-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-activities {
        grid-template-columns: 1fr;
    }

    .positions-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--color-white);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        border-bottom: 1px solid var(--color-border);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-title-main {
        font-size: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .articles-grid {
        grid-template-columns: 1fr;
    }

    .event-info {
        flex-direction: column;
        gap: 24px;
    }

    .event-date-block {
        width: 80px;
        height: 80px;
    }

    .event-meta {
        flex-direction: column;
        gap: 8px;
    }

    .event-card {
        flex-direction: column;
        gap: 16px;
    }

    .article-list-item {
        flex-direction: column;
        gap: 16px;
    }

    .footer-content {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px;
    }

    .page-hero h1 {
        font-size: 1.75rem;
    }

    .about-hero h1,
    .recruit-hero h1 {
        font-size: 1.75rem;
    }
}

@media (max-width: 480px) {
    .btn {
        width: 100%;
    }

    .btn-large {
        padding: 16px 32px;
    }
}