/* ========================================
   Nicore株式会社 - トップページ CSS
   ダークモードテーマ
======================================== */

/* カスタムプロパティ（CSS変数） */
:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --accent-gold: #d4a855;
    --accent-gold-light: #e8c97a;
    --accent-blue: #58a6ff;
    --border-color: #30363d;
    --gradient-gold: linear-gradient(135deg, #d4a855 0%, #e8c97a 100%);
}

/* リセット＆基本スタイル */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.8;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

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

/* ========================================
   ナビゲーション
======================================== */
.navbar {
    padding: 1rem 0;
    background: transparent;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(13, 17, 23, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.brand-logo {
    height: 40px;
    width: auto;
}

.brand-text {
    font-family: 'Zen Antique', serif;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-gold);
}

.brand-sub {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.navbar-nav .nav-link {
    color: var(--text-primary);
    font-weight: 400;
    padding: 0.5rem 1rem;
    position: relative;
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent-gold);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.navbar-nav .nav-link:hover::after {
    width: 80%;
}

.navbar-nav .nav-link:hover {
    color: var(--accent-gold);
}

.contact-btn {
    background: var(--gradient-gold);
    color: var(--bg-primary) !important;
    border-radius: 25px;
    padding: 0.5rem 1.5rem !important;
    font-weight: 500;
}

.contact-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(212, 168, 85, 0.3);
}

.contact-btn::after {
    display: none;
}

/* ========================================
   ヒーローセクション
======================================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0d1117 0%, #1a1f2c 50%, #0d1117 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse at 20% 80%, rgba(212, 168, 85, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(88, 166, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="1" fill="%23ffffff" opacity="0.1"/></svg>');
    background-size: 50px 50px;
    opacity: 0.3;
}

/* パーティクル背景 */
.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 0;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--accent-gold);
    border-radius: 50%;
    opacity: 0;
    animation: particle-float 8s ease-in-out infinite;
    box-shadow: 0 0 10px var(--accent-gold), 0 0 20px var(--accent-gold);
}

@keyframes particle-float {
    0% {
        opacity: 0;
        transform: translateY(100vh) scale(0);
    }
    10% {
        opacity: 0.8;
    }
    90% {
        opacity: 0.8;
    }
    100% {
        opacity: 0;
        transform: translateY(-100px) scale(1);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 0 1rem;
}

.hero-title {
    font-family: 'Zen Antique', serif;
    font-size: clamp(1.8rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 1.5rem;
}

.title-line {
    display: inline-block;
}

/* 文字アニメーション */
.char {
    display: inline-block;
    opacity: 0;
    transform: translateY(50px) rotateX(-90deg);
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-gold-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: char-reveal 0.8s cubic-bezier(0.23, 1, 0.32, 1) forwards;
    animation-delay: calc(var(--i) * 0.08s + 0.3s);
}

@keyframes char-reveal {
    0% {
        opacity: 0;
        transform: translateY(50px) rotateX(-90deg);
        filter: blur(10px);
    }
    50% {
        filter: blur(2px);
    }
    100% {
        opacity: 1;
        transform: translateY(0) rotateX(0);
        filter: blur(0);
    }
}

/* グロー効果 */
.char:hover {
    animation: char-glow 0.5s ease-out;
    text-shadow: 0 0 20px var(--accent-gold), 0 0 40px var(--accent-gold);
}

@keyframes char-glow {
    0% {
        text-shadow: 0 0 0 transparent;
    }
    50% {
        text-shadow: 0 0 30px var(--accent-gold), 0 0 60px var(--accent-gold);
    }
    100% {
        text-shadow: 0 0 20px var(--accent-gold), 0 0 40px var(--accent-gold);
    }
}

/* フェードアップアニメーション */
.animate-fade-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fade-up 1s cubic-bezier(0.23, 1, 0.32, 1) forwards;
    animation-delay: 2s;
}

.animate-fade-up.delay-2 {
    animation-delay: 2.3s;
}

@keyframes fade-up {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    letter-spacing: 0.1em;
}

/* ボタンパルスアニメーション */
.btn-primary-custom {
    position: relative;
    overflow: hidden;
}

.btn-primary-custom::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-primary-custom:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary-custom {
    display: inline-block;
    background: var(--gradient-gold);
    color: var(--bg-primary);
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.btn-primary-custom:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(212, 168, 85, 0.3);
    color: var(--bg-primary);
}

/* ========================================
   セクション共通スタイル
======================================== */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--accent-gold);
    letter-spacing: 0.2em;
    margin-bottom: 1rem;
}

.section-title {
    font-family: 'Zen Antique', serif;
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--text-primary);
}

.link-arrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-gold);
    font-weight: 500;
    transition: all 0.3s ease;
}

.link-arrow:hover {
    color: var(--accent-gold-light);
    gap: 1rem;
}

/* ========================================
   アバウトセクション
======================================== */
.about-section {
    background: var(--bg-secondary);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-content p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 2;
}

/* ========================================
   事業紹介セクション
======================================== */
.business-section {
    background: var(--bg-primary);
}

.business-card {
    background: var(--bg-secondary);
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    height: 100%;
}

.business-card:hover {
    transform: translateY(-10px);
    border-color: var(--accent-gold);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.business-image {
    position: relative;
    height: 250px;
    overflow: hidden;
}

.business-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.business-card:hover .business-image img {
    transform: scale(1.1);
}

.business-info {
    padding: 2rem;
}

.business-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--accent-gold);
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
}

.business-info h3 {
    font-family: 'Zen Antique', serif;
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.business-catch {
    font-size: 1rem;
    color: var(--accent-gold-light);
    font-weight: 500;
    margin-bottom: 1rem;
}

.business-info p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

/* ========================================
   会社情報セクション
======================================== */
.company-section {
    background: var(--bg-secondary);
}

.company-table {
    width: 100%;
    margin-bottom: 2rem;
}

.company-table tr {
    border-bottom: 1px solid var(--border-color);
}

.company-table th,
.company-table td {
    padding: 1rem 0;
    vertical-align: top;
}

.company-table th {
    width: 120px;
    color: var(--text-secondary);
    font-weight: 400;
}

.company-table td {
    color: var(--text-primary);
}

.company-message {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    padding: 3rem;
}

.message-quote {
    font-family: 'Zen Antique', serif;
    font-size: 1.5rem;
    line-height: 2;
    color: var(--text-secondary);
    text-align: center;
    position: relative;
}

.message-quote::before {
    content: '"';
    position: absolute;
    top: -30px;
    left: -20px;
    font-size: 4rem;
    color: var(--accent-gold);
    opacity: 0.3;
}

/* ========================================
   CTAセクション
======================================== */
.cta-section {
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at center, rgba(212, 168, 85, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.cta-section h2 {
    font-family: 'Zen Antique', serif;
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: 1rem;
    position: relative;
}

.cta-section p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    position: relative;
}

/* ========================================
   フッター
======================================== */
.footer {
    background: var(--bg-primary);
    padding: 80px 0 30px;
    border-top: 1px solid var(--border-color);
}

.footer-logo {
    height: 60px;
    width: auto;
    margin-bottom: 1rem;
}

.footer-brand h3 {
    font-family: 'Zen Antique', serif;
    font-size: 1.5rem;
    color: var(--accent-gold);
    margin-bottom: 1rem;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-nav h4,
.footer-contact h4 {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.footer-nav ul {
    list-style: none;
    padding: 0;
}

.footer-nav li {
    margin-bottom: 0.75rem;
}

.footer-nav a {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-nav a:hover {
    color: var(--accent-gold);
}

.footer-contact p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
}

.footer-contact i {
    color: var(--accent-gold);
    margin-right: 0.5rem;
    width: 20px;
}

.footer-bottom {
    margin-top: 60px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-bottom p {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* ========================================
   レスポンシブ
======================================== */
@media (max-width: 991px) {
    .navbar-collapse {
        background: var(--bg-secondary);
        padding: 1rem;
        border-radius: 10px;
        margin-top: 1rem;
    }

    .navbar-nav .nav-link {
        padding: 0.75rem 1rem;
    }

    .contact-btn {
        display: inline-block;
        margin-top: 0.5rem;
    }
}

@media (max-width: 768px) {
    section {
        padding: 60px 0;
    }

    .hero {
        min-height: 500px;
    }

    .business-image {
        height: 200px;
    }

    .company-message {
        padding: 2rem 0;
    }

    .message-quote {
        font-size: 1.2rem;
    }

    .footer {
        padding: 60px 0 20px;
    }

    .footer-brand,
    .footer-nav,
    .footer-contact {
        margin-bottom: 2rem;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 1.5rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .btn-primary-custom {
        padding: 0.8rem 2rem;
        font-size: 0.9rem;
    }
}

/* ========================================
   スクロールアニメーション
======================================== */
.scroll-reveal {
    opacity: 0;
    transform: translateY(60px);
    transition: all 0.8s cubic-bezier(0.23, 1, 0.32, 1);
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

.scroll-reveal-left {
    opacity: 0;
    transform: translateX(-60px);
    transition: all 0.8s cubic-bezier(0.23, 1, 0.32, 1);
}

.scroll-reveal-left.revealed {
    opacity: 1;
    transform: translateX(0);
}

.scroll-reveal-right {
    opacity: 0;
    transform: translateX(60px);
    transition: all 0.8s cubic-bezier(0.23, 1, 0.32, 1);
}

.scroll-reveal-right.revealed {
    opacity: 1;
    transform: translateX(0);
}

.scroll-reveal-scale {
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.8s cubic-bezier(0.23, 1, 0.32, 1);
}

.scroll-reveal-scale.revealed {
    opacity: 1;
    transform: scale(1);
}

/* ========================================
   3Dカードエフェクト
======================================== */
.card-3d {
    transform-style: preserve-3d;
    perspective: 1000px;
}

.card-3d-inner {
    transition: transform 0.6s cubic-bezier(0.23, 1, 0.32, 1);
    transform-style: preserve-3d;
}

.business-card {
    transform-style: preserve-3d;
    perspective: 1000px;
}

.business-card:hover {
    transform: translateY(-10px) rotateX(5deg) rotateY(-5deg);
}

/* ========================================
   グローエフェクト
======================================== */
.glow-effect {
    position: relative;
}

.glow-effect::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(212, 168, 85, 0.3) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none;
    z-index: -1;
}

.glow-effect:hover::after {
    opacity: 1;
}

/* セクションタイトルのグロー */
.section-title {
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--gradient-gold);
    border-radius: 2px;
    box-shadow: 0 0 20px rgba(212, 168, 85, 0.5);
}

/* ========================================
   マウス追従エフェクト
======================================== */
.mouse-glow {
    position: fixed;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(212, 168, 85, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    transition: opacity 0.3s ease;
    mix-blend-mode: screen;
}

/* ========================================
   ナビリンクのキラキラエフェクト
======================================== */
.navbar-nav .nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(212, 168, 85, 0.2), transparent);
    transition: left 0.5s ease;
    pointer-events: none;
    z-index: -1;
}

.navbar-nav .nav-link:hover::before {
    left: 100%;
}

/* ========================================
   ボタンの光沢エフェクト
======================================== */
.btn-primary-custom {
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-primary-custom::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent 30%, rgba(255,255,255,0.3) 50%, transparent 70%);
    transform: rotate(45deg) translateX(-100%);
    transition: transform 0.6s ease;
}

.btn-primary-custom:hover::after {
    transform: rotate(45deg) translateX(100%);
}

/* ========================================
   テキストのシャイニーエフェクト
======================================== */
.shiny-text {
    background: linear-gradient(
        120deg,
        var(--text-primary) 0%,
        var(--text-primary) 40%,
        var(--accent-gold) 50%,
        var(--text-primary) 60%,
        var(--text-primary) 100%
    );
    background-size: 200% 100%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shine 3s linear infinite;
}

@keyframes shine {
    0% {
        background-position: 200% center;
    }
    100% {
        background-position: -200% center;
    }
}

/* ========================================
   フローティングアニメーション
======================================== */
.floating {
    animation: floating 3s ease-in-out infinite;
}

@keyframes floating {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* ========================================
   パルスアニメーション
======================================== */
.pulse {
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(212, 168, 85, 0.4);
    }
    50% {
        box-shadow: 0 0 0 20px rgba(212, 168, 85, 0);
    }
}

/* ========================================
   カード境界線アニメーション
======================================== */
.border-glow {
    position: relative;
}

.border-glow::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, var(--accent-gold), var(--accent-blue), var(--accent-gold));
    background-size: 400% 400%;
    border-radius: inherit;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
    animation: gradient-rotate 3s ease infinite;
}

.border-glow:hover::before {
    opacity: 1;
}

@keyframes gradient-rotate {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* ========================================
   画像のパララックス風効果
======================================== */
.parallax-image {
    transition: transform 0.3s ease-out;
}

/* ========================================
   リンクアローのアニメーション強化
======================================== */
.link-arrow i {
    transition: transform 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.link-arrow:hover i {
    transform: translateX(5px);
}

/* ========================================
   引用のアニメーション
======================================== */
.message-quote {
    animation: quote-fade 1s ease-out;
}

@keyframes quote-fade {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   フッターリンクのホバーエフェクト
======================================== */
.footer-nav a {
    position: relative;
    display: inline-block;
}

.footer-nav a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent-gold);
    transition: width 0.3s ease;
}

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

/* ========================================
   ローディングアニメーション用
======================================== */
.page-loaded .hero-content {
    animation: content-reveal 1s ease-out forwards;
}

@keyframes content-reveal {
    0% {
        opacity: 0;
        transform: translateY(30px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   スムーズな遅延アニメーション
======================================== */
.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }
.delay-500 { animation-delay: 0.5s; }

/* ========================================
   カスタムスクロールバー
======================================== */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-gold);
}