/* =============================================
   CRIMSON NEXUS - e-sports コーポレートサイト
   メインスタイルシート
   ============================================= */

/* ----- カスタムプロパティ（デザイントークン） ----- */
:root {
  --color-bg: #0A0A0F;
  --color-bg-secondary: #10101A;
  --color-bg-tertiary: #1A1A28;
  --color-bg-card: rgba(16, 16, 26, 0.85);
  --color-primary: #FF1744;
  --color-primary-dark: #CC0033;
  --color-primary-light: #FF5252;
  --color-primary-glow: rgba(255, 23, 68, 0.5);
  --color-primary-subtle: rgba(255, 23, 68, 0.1);
  --color-accent: #FF6B6B;
  --color-text: #FFFFFF;
  --color-text-secondary: #B8B8CC;
  --color-text-muted: #6B6B80;
  --color-border: rgba(255, 255, 255, 0.06);
  --color-border-hover: rgba(255, 23, 68, 0.3);
  --color-success: #00E676;
  --color-warning: #FFD600;
  --font-heading: 'Orbitron', sans-serif;
  --font-body: 'Noto Sans JP', 'Inter', sans-serif;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-3xl: 8rem;
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --shadow-card: 0 4px 30px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 30px var(--color-primary-glow);
  --shadow-glow-sm: 0 0 15px rgba(255, 23, 68, 0.3);
}

/* ----- リセット・ベース ----- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; scrollbar-width: thin; scrollbar-color: var(--color-primary) var(--color-bg); }
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb { background: var(--color-primary-dark); border-radius: 4px; }
::selection { background: var(--color-primary); color: var(--color-text); }

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; transition: color var(--transition-fast); }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; outline: none; background: none; }
input, textarea, select { font-family: inherit; outline: none; }

/* ----- ユーティリティ ----- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 var(--space-lg); }
.section-padding { padding: var(--space-3xl) 0; }
.gradient-text { background: linear-gradient(135deg, var(--color-primary), var(--color-accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

.section-label {
  font-family: var(--font-heading); font-size: 0.75rem; letter-spacing: 4px;
  text-transform: uppercase; color: var(--color-primary); margin-bottom: var(--space-sm);
  display: inline-block; position: relative; padding-left: 40px;
}
.section-label::before { content: ''; position: absolute; left: 0; top: 50%; width: 28px; height: 2px; background: var(--color-primary); transform: translateY(-50%); }

.section-title { font-family: var(--font-heading); font-size: clamp(2rem, 5vw, 3rem); font-weight: 900; margin-bottom: var(--space-md); line-height: 1.2; letter-spacing: 2px; }
.section-description { color: var(--color-text-secondary); font-size: 1.05rem; max-width: 600px; line-height: 1.9; }

/* アニメーション用クラス */
.reveal { opacity: 0; transform: translateY(40px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal.active { opacity: 1; transform: translateY(0); }
.reveal-left { opacity: 0; transform: translateX(-60px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal-left.active { opacity: 1; transform: translateX(0); }
.reveal-right { opacity: 0; transform: translateX(60px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal-right.active { opacity: 1; transform: translateX(0); }
.reveal-scale { opacity: 0; transform: scale(0.85); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal-scale.active { opacity: 1; transform: scale(1); }
.delay-1 { transition-delay: 0.1s !important; }
.delay-2 { transition-delay: 0.2s !important; }
.delay-3 { transition-delay: 0.3s !important; }
.delay-4 { transition-delay: 0.4s !important; }
.delay-5 { transition-delay: 0.5s !important; }

/* =============================================
   ヘッダー・ナビゲーション
   ============================================= */
.header { position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; padding: var(--space-md) 0; transition: all var(--transition-base); background: transparent; }
.header.scrolled { background: rgba(10, 10, 15, 0.92); backdrop-filter: blur(20px); padding: var(--space-sm) 0; border-bottom: 1px solid var(--color-border); box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3); }
.header .container { display: flex; align-items: center; justify-content: space-between; }

.logo { font-family: var(--font-heading); font-size: 1.35rem; font-weight: 900; letter-spacing: 3px; color: var(--color-text); display: flex; align-items: center; gap: var(--space-sm); text-transform: uppercase; }
.logo-icon { width: 36px; height: 36px; background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark)); clip-path: polygon(50% 0%, 100% 100%, 0% 100%); display: inline-block; filter: drop-shadow(0 0 8px var(--color-primary-glow)); }
.logo span { color: var(--color-primary); }

.nav-links { display: flex; align-items: center; gap: var(--space-lg); }
.nav-links a { font-family: var(--font-heading); font-size: 0.7rem; letter-spacing: 2px; text-transform: uppercase; color: var(--color-text-secondary); position: relative; padding: var(--space-xs) 0; }
.nav-links a::after { content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px; background: var(--color-primary); transition: width var(--transition-base); box-shadow: var(--shadow-glow-sm); }
.nav-links a:hover { color: var(--color-text); }
.nav-links a:hover::after { width: 100%; }

.nav-cta { font-family: var(--font-heading); font-size: 0.7rem; letter-spacing: 2px; text-transform: uppercase; padding: 10px 24px; background: var(--color-primary); color: var(--color-text); transition: all var(--transition-base); clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px)); }
.nav-cta:hover { background: var(--color-primary-light); box-shadow: var(--shadow-glow); transform: translateY(-2px); }

.menu-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; z-index: 1001; padding: 8px; }
.menu-toggle span { width: 28px; height: 2px; background: var(--color-text); transition: all var(--transition-base); transform-origin: center; }
.menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* =============================================
   ヒーローセクション
   ============================================= */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; justify-content: center; overflow: hidden; background: var(--color-bg); }
.hero-bg { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background-image: url('../images/hero_bg.webp'); background-size: cover; background-position: center; opacity: 0.3; filter: blur(2px); }
.hero-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: linear-gradient(180deg, rgba(10,10,15,0.6) 0%, rgba(10,10,15,0.4) 50%, rgba(10,10,15,0.95) 100%); }
#particles-canvas { position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 1; }

.hero::after { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0,0,0,0.03) 2px, rgba(0,0,0,0.03) 4px); pointer-events: none; z-index: 2; }

.hero-content { position: relative; z-index: 3; text-align: center; max-width: 900px; padding: 0 var(--space-lg); }

.hero-badge { display: inline-flex; align-items: center; gap: var(--space-sm); padding: 8px 20px; background: var(--color-primary-subtle); border: 1px solid rgba(255,23,68,0.2); border-radius: 50px; font-family: var(--font-heading); font-size: 0.65rem; letter-spacing: 3px; text-transform: uppercase; color: var(--color-primary-light); margin-bottom: var(--space-lg); animation: fadeInDown 0.8s ease forwards; }
.hero-badge .pulse-dot { width: 8px; height: 8px; background: var(--color-primary); border-radius: 50%; animation: pulse 2s ease infinite; }

.hero-title { font-family: var(--font-heading); font-size: clamp(2.8rem, 8vw, 6rem); font-weight: 900; letter-spacing: 6px; line-height: 1.1; margin-bottom: var(--space-lg); text-transform: uppercase; animation: fadeInUp 0.8s ease 0.2s forwards; opacity: 0; position: relative; }
.hero-title .highlight { color: var(--color-primary); text-shadow: 0 0 40px var(--color-primary-glow), 0 0 80px rgba(255,23,68,0.2); position: relative; display: inline-block; }

.glitch { position: relative; }
.glitch::before, .glitch::after { content: attr(data-text); position: absolute; top: 0; left: 0; width: 100%; height: 100%; opacity: 0.8; }
.glitch::before { color: #0ff; z-index: -1; animation: glitch-1 3s infinite linear alternate-reverse; }
.glitch::after { color: #f0f; z-index: -2; animation: glitch-2 2s infinite linear alternate-reverse; }

.hero-subtitle { font-size: 1.15rem; color: var(--color-text-secondary); margin-bottom: var(--space-xl); line-height: 1.8; animation: fadeInUp 0.8s ease 0.4s forwards; opacity: 0; min-height: 2em; }
.typing-cursor { display: inline-block; width: 2px; height: 1.2em; background: var(--color-primary); margin-left: 4px; animation: blink 0.8s infinite; vertical-align: text-bottom; }

.hero-buttons { display: flex; gap: var(--space-md); justify-content: center; flex-wrap: wrap; animation: fadeInUp 0.8s ease 0.6s forwards; opacity: 0; }

.btn { font-family: var(--font-heading); font-size: 0.75rem; letter-spacing: 2px; text-transform: uppercase; padding: 16px 36px; cursor: pointer; transition: all var(--transition-base); position: relative; overflow: hidden; display: inline-flex; align-items: center; gap: var(--space-sm); }
.btn::before { content: ''; position: absolute; top: 0; left: -100%; width: 100%; height: 100%; background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent); transition: left 0.5s ease; }
.btn:hover::before { left: 100%; }

.btn-primary { background: var(--color-primary); color: var(--color-text); border: 2px solid var(--color-primary); clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px)); }
.btn-primary:hover { background: var(--color-primary-light); border-color: var(--color-primary-light); box-shadow: var(--shadow-glow); transform: translateY(-3px); }

.btn-outline { background: transparent; color: var(--color-text); border: 2px solid var(--color-border-hover); clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px)); }
.btn-outline:hover { border-color: var(--color-primary); color: var(--color-primary); box-shadow: var(--shadow-glow-sm); transform: translateY(-3px); }

.scroll-indicator { position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%); z-index: 3; display: flex; flex-direction: column; align-items: center; gap: var(--space-sm); animation: fadeInUp 0.8s ease 1s forwards, float 3s ease-in-out infinite 1.5s; opacity: 0; }
.scroll-indicator span { font-family: var(--font-heading); font-size: 0.55rem; letter-spacing: 3px; text-transform: uppercase; color: var(--color-text-muted); }
.scroll-indicator .mouse { width: 24px; height: 38px; border: 2px solid var(--color-text-muted); border-radius: 12px; position: relative; }
.scroll-indicator .mouse::after { content: ''; width: 3px; height: 8px; background: var(--color-primary); border-radius: 2px; position: absolute; top: 8px; left: 50%; transform: translateX(-50%); animation: scrollMouse 2s ease infinite; }