/* ================================================
   株式会社隆商会 - 共通スタイルシート
   Dark Premium Design（Three UP スタイル参照）
   ================================================ */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700;900&family=Jost:wght@300;400;600;700;900&display=swap');

:root {
    /* ===== カラー ===== */
    --accent:        #FF6B00;
    --accent-light:  #ff8c00;
    --accent-glow:   rgba(255,107,0,0.25);

    --bg:            #000000;
    --bg-soft:       #080808;
    --bg-card:       #111111;
    --bg-card2:      #181818;
    --bg-mid:        #0d0d0d;

    --text:          #ffffff;
    --text-light:    rgba(255,255,255,0.72);
    --text-muted:    rgba(255,255,255,0.42);

    --border:        rgba(255,255,255,0.1);
    --border-accent: rgba(255,107,0,0.4);

    --shadow:        0 10px 40px rgba(0,0,0,0.5);
    --shadow-lg:     0 20px 60px rgba(0,0,0,0.6);
    --shadow-orange: 0 8px 30px rgba(255,107,0,0.3);

    --radius:    20px;
    --radius-sm: 12px;
    --transition: 0.3s ease;
}

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

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

body {
    font-family: 'Noto Sans JP', 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', Meiryo, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 2.0;
    overflow-x: hidden;
}

img  { max-width: 100%; height: auto; display: block; }
ul   { list-style: none; }
a    { color: inherit; text-decoration: none; }

/* ================================================
   スクロールプログレスバー
   ================================================ */
.scroll-progress {
    position: fixed; top: 0; left: 0; width: 0; height: 2px; z-index: 9999;
    background: linear-gradient(90deg, var(--accent), var(--accent-light));
    box-shadow: 0 0 12px rgba(255,107,0,0.7);
    transition: width 0.1s linear;
}

/* ================================================
   ヘッダー（グラスモーフィズム）
   ================================================ */
header {
    position: sticky; top: 0; z-index: 1000;
    background: rgba(0,0,0,0.72);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,107,0,0.18);
    padding: 1.2rem 0;
    transition: padding var(--transition), background var(--transition);
}
header.scrolled {
    background: rgba(0,0,0,0.92);
    padding: 0.8rem 0;
}

.header-content {
    max-width: 1200px; margin: 0 auto; padding: 0 2rem;
    display: flex; align-items: center; justify-content: space-between;
}

.company-name {
    font-family: 'Jost', 'Noto Sans JP', sans-serif;
    font-size: 1.3rem; font-weight: 700; letter-spacing: 0.05em;
    color: var(--text);
    display: flex; align-items: center; gap: 0.3rem;
    transition: opacity var(--transition);
}
.company-name:hover { opacity: 0.8; }
.company-name span {
    color: var(--accent);
    font-size: 1.45rem; font-weight: 900;
}

.nav-list {
    display: flex; align-items: center; gap: 0.3rem;
}
.nav-list a {
    font-size: 0.87rem; font-weight: 500; letter-spacing: 0.04em;
    padding: 0.5rem 0.9rem; border-radius: 6px;
    color: var(--text-light);
    transition: color var(--transition), background var(--transition);
}
.nav-list a:hover, .nav-list a.active {
    color: var(--text);
    background: rgba(255,255,255,0.07);
}
.btn-nav {
    background: var(--accent) !important;
    color: #fff !important;
    padding: 0.55rem 1.4rem !important;
    border-radius: 6px !important;
    font-weight: 700 !important;
    letter-spacing: 0.06em !important;
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition) !important;
    margin-left: 0.3rem !important;
}
.btn-nav:hover {
    background: var(--accent-light) !important;
    transform: translateY(-1px);
    box-shadow: var(--shadow-orange) !important;
}

/* ハンバーガー */
.hamburger {
    display: none; flex-direction: column; gap: 5px; cursor: pointer;
    background: none; border: none; padding: 8px;
}
.hamburger span {
    display: block; width: 24px; height: 2px;
    background: var(--text); border-radius: 2px;
    transition: all 0.3s ease;
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* モバイルナビ */
.mobile-nav {
    display: none; flex-direction: column; gap: 0;
    background: rgba(0,0,0,0.97);
    border-top: 1px solid rgba(255,107,0,0.12);
    max-height: 0; overflow: hidden;
    transition: max-height 0.4s ease;
}
.mobile-nav.open { max-height: 400px; }
.mobile-nav a {
    padding: 1rem 2rem; font-size: 0.95rem; font-weight: 500;
    color: var(--text-light);
    border-bottom: 1px solid rgba(255,255,255,0.05);
    transition: color var(--transition), padding-left var(--transition);
}
.mobile-nav a:hover { color: var(--accent); padding-left: 2.5rem; }

/* ================================================
   ページヒーロー（内ページ共通）
   ================================================ */
.page-hero {
    padding: 8rem 2rem 5rem;
    text-align: center;
    position: relative; overflow: hidden;
    background:
        linear-gradient(to bottom, rgba(0,0,0,0.6), rgba(0,0,0,0.9)),
        url('https://images.unsplash.com/photo-1768810572938-73b26919f919?w=1600&h=700&fit=crop') center/cover fixed;
}
.page-hero::after {
    content: '';
    position: absolute; bottom: 0; left: 0; right: 0; height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0.4;
}
.page-hero-inner { position: relative; z-index: 1; max-width: 700px; margin: 0 auto; }

.breadcrumb {
    display: flex; align-items: center; justify-content: center; gap: 0.5rem;
    font-size: 0.8rem; color: var(--text-muted); letter-spacing: 0.08em; margin-bottom: 1.5rem;
}
.breadcrumb a { color: var(--text-muted); transition: color var(--transition); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: rgba(255,107,0,0.3); }

.page-hero h1 {
    font-size: 3rem; font-weight: 900; letter-spacing: 0.06em; margin-bottom: 1rem;
    color: var(--text);
}
.page-hero h1 em { font-style: normal; color: var(--accent); }
.page-hero .hero-sub { font-size: 1rem; color: var(--text-muted); letter-spacing: 0.06em; }

/* ================================================
   セクション共通
   ================================================ */
.section-bg { padding: 6rem 2rem; }
.section-inner { max-width: 1200px; margin: 0 auto; }
.section-head { text-align: center; margin-bottom: 4rem; }

.section-tag {
    display: inline-block;
    font-family: 'Jost', sans-serif;
    font-size: 0.7rem; font-weight: 700; letter-spacing: 0.24em;
    color: var(--accent);
    margin-bottom: 1rem;
    position: relative; padding: 0 1.2rem;
}
.section-tag::before, .section-tag::after {
    content: '';
    position: absolute; top: 50%; width: 30px; height: 1px;
    background: var(--accent); opacity: 0.45;
    transform: translateY(-50%);
}
.section-tag::before { right: 100%; }
.section-tag::after  { left: 100%; }

.section-title {
    font-size: 2.8rem; font-weight: 900; letter-spacing: 0.04em;
    line-height: 1.2; margin-bottom: 1.2rem; color: var(--text);
}
.section-desc {
    font-size: 0.97rem; color: var(--text-muted); line-height: 2.0;
}

/* ================================================
   ボタン
   ================================================ */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
    padding: 0.9rem 2.2rem; border-radius: 6px;
    font-size: 0.92rem; font-weight: 700; letter-spacing: 0.08em;
    background: var(--accent); color: #fff;
    border: 2px solid var(--accent);
    cursor: pointer; transition: all var(--transition);
    white-space: nowrap;
}
.btn:hover {
    background: var(--accent-light);
    border-color: var(--accent-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-orange);
}
.btn-lg { padding: 1.1rem 2.8rem; font-size: 1rem; }
.btn-sm { padding: 0.55rem 1.4rem; font-size: 0.82rem; }

.btn-outline {
    background: transparent; color: var(--accent);
    border: 2px solid var(--accent);
}
.btn-outline:hover {
    background: var(--accent); color: #fff;
    box-shadow: var(--shadow-orange);
}

.btn-white {
    background: #fff; color: #000;
    border-color: #fff;
}
.btn-white:hover {
    background: rgba(255,255,255,0.88);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(255,255,255,0.2);
}

/* ================================================
   カード
   ================================================ */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2.5rem;
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.card:hover {
    transform: translateY(-6px);
    border-color: var(--border-accent);
    box-shadow: 0 20px 50px rgba(255,107,0,0.1);
}
.card-icon { font-size: 2.5rem; margin-bottom: 1.2rem; display: block; }
.card h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 0.8rem; color: var(--text); }
.card p  { font-size: 0.93rem; color: var(--text-muted); line-height: 2.0; }

/* ================================================
   グリッド
   ================================================ */
.grid-2   { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem; }
.grid-3   { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.grid-4   { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; }
.grid-auto{ display: grid; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); gap: 2rem; }

/* ================================================
   アニメーション
   ================================================ */
.fade-in       { opacity: 0; transform: translateY(30px);  transition: opacity 0.7s ease, transform 0.7s ease; }
.fade-in-left  { opacity: 0; transform: translateX(-40px); transition: opacity 0.7s ease, transform 0.7s ease; }
.fade-in-right { opacity: 0; transform: translateX(40px);  transition: opacity 0.7s ease, transform 0.7s ease; }
.scale-in      { opacity: 0; transform: scale(0.92);       transition: opacity 0.7s ease, transform 0.7s ease; }
.section-title { opacity: 0; transform: translateY(20px);  transition: opacity 0.7s ease, transform 0.7s ease; }

.fade-in.visible, .fade-in-left.visible, .fade-in-right.visible,
.scale-in.visible, .section-title.visible { opacity: 1; transform: none; }

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }

/* ================================================
   CTAバナー
   ================================================ */
.cta-banner {
    background: linear-gradient(135deg, #e85d00, var(--accent), var(--accent-light));
    padding: 6rem 2rem; text-align: center;
    position: relative; overflow: hidden;
}
.cta-banner::before {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(0,0,0,0.2), transparent);
    pointer-events: none;
}
.cta-content { position: relative; z-index: 1; max-width: 800px; margin: 0 auto; }
.cta-content h2 {
    font-size: 2.5rem; font-weight: 900; letter-spacing: 0.06em; margin-bottom: 1.2rem; color: #fff;
}
.cta-content p {
    font-size: 1.02rem; color: rgba(255,255,255,0.88); line-height: 2.0; margin-bottom: 2.5rem;
}
.cta-btns { display: flex; gap: 1.2rem; justify-content: center; flex-wrap: wrap; }

/* ================================================
   フォーム
   ================================================ */
input[type="text"], input[type="email"], input[type="tel"],
select, textarea {
    width: 100%;
    padding: 0.85rem 1.2rem;
    background: var(--bg-card2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text); font-size: 0.95rem; font-family: inherit;
    transition: border-color var(--transition), box-shadow var(--transition);
    appearance: none;
}
input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(255,107,0,0.15);
}
input::placeholder, textarea::placeholder { color: var(--text-muted); }
select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='rgba(255,255,255,0.4)' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right 1rem center;
    padding-right: 2.5rem; cursor: pointer;
    background-color: var(--bg-card2);
}
select option { background: #111; color: #fff; }
label {
    display: block; font-size: 0.85rem; font-weight: 700;
    color: var(--text-light); margin-bottom: 0.5rem; letter-spacing: 0.04em;
}

/* ================================================
   フッター
   ================================================ */
footer {
    background: var(--bg-soft);
    border-top: 1px solid rgba(255,107,0,0.15);
}
.footer-top {
    max-width: 1200px; margin: 0 auto; padding: 5rem 2rem 4rem;
    display: grid; grid-template-columns: 2fr 1fr 1fr 1.2fr; gap: 3rem;
}
.footer-logo {
    font-size: 1.4rem; font-weight: 700; color: var(--text);
    display: inline-block; margin-bottom: 1.2rem; letter-spacing: 0.05em;
}
.footer-logo span { color: var(--accent); font-size: 1.6rem; font-weight: 900; }
.footer-brand p { font-size: 0.87rem; color: var(--text-muted); line-height: 2.0; margin-bottom: 0.5rem; }
.footer-tel {
    display: inline-flex; align-items: center; gap: 0.4rem;
    font-size: 0.97rem; font-weight: 700; color: var(--accent);
    margin-top: 1rem; transition: opacity var(--transition);
}
.footer-tel:hover { opacity: 0.8; }

.footer-col h4 {
    font-size: 0.72rem; font-weight: 700; letter-spacing: 0.18em;
    color: var(--accent); text-transform: uppercase;
    margin-bottom: 1.2rem; padding-bottom: 0.6rem;
    border-bottom: 1px solid rgba(255,107,0,0.2);
}
.footer-col a {
    display: block; font-size: 0.87rem; color: var(--text-muted);
    padding: 0.4rem 0;
    transition: color var(--transition), padding-left var(--transition);
}
.footer-col a:hover { color: var(--text); padding-left: 0.4rem; }

.footer-bottom {
    border-top: 1px solid var(--border);
    padding: 1.5rem 2rem; text-align: center;
    display: flex; justify-content: center; gap: 2rem; flex-wrap: wrap;
}
.footer-bottom p { font-size: 0.8rem; color: var(--text-muted); }

/* ================================================
   ユーティリティ
   ================================================ */
.text-center { text-align: center; }
.text-accent  { color: var(--accent); }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mb-2 { margin-bottom: 2rem; }

/* ================================================
   レスポンシブ
   ================================================ */
@media (max-width: 1024px) {
    .grid-4  { grid-template-columns: repeat(2, 1fr); }
    .footer-top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .section-title { font-size: 2rem; }
    .page-hero h1  { font-size: 2.2rem; }
    .cta-content h2 { font-size: 2rem; }

    .nav-list  { display: none; }
    .hamburger { display: flex; }
    .mobile-nav { display: flex; }

    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .section-bg { padding: 4rem 1.5rem; }
    .footer-top { grid-template-columns: 1fr; gap: 2rem; padding: 3rem 1.5rem 2rem; }

    .section-tag::before, .section-tag::after { display: none; }
}

@media (max-width: 480px) {
    .btn-lg { padding: 0.9rem 1.8rem; font-size: 0.92rem; }
    .section-title { font-size: 1.7rem; }
    .cta-btns { flex-direction: column; align-items: center; }
}