/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { min-height: 100vh; line-height: 1.6; -webkit-font-smoothing: antialiased; }
img, picture, video, canvas, svg { display: block; max-width: 100%; }
ul, ol { list-style: none; }
a { text-decoration: none; color: inherit; }
button { font: inherit; color: inherit; border: none; background: none; cursor: pointer; }
:focus-visible { outline: 2px solid #FFD700; outline-offset: 3px; }

/* ===== VARIABLES ===== */
:root {
  --color-black: #0D0D0D;
  --color-red: #E60000;
  --color-gold: #FFD700;
  --color-cyan: #00D4FF;
  --color-violet: #8B5CF6;
  --color-glass: rgba(255,255,255,0.08);
  --color-white: #F5F5F5;
  --color-gray: #A0A0A0;
  --color-orange: #FF7B00;
  --gradient-cyber: linear-gradient(135deg, #00D4FF, #8B5CF6);
  --gradient-cyber-reverse: linear-gradient(135deg, #8B5CF6, #00D4FF);
  --gradient-fire: linear-gradient(135deg, #E60000, #FF7B00);
  --font-heading: "Oswald", "Bebas Neue", sans-serif;
  --font-body: "Inter", sans-serif;
  --fw-regular: 400;
  --fw-bold: 700;
  --fw-black: 900;
  --fs-h1: clamp(2.8rem, 8vw, 4.5rem);
  --fs-h2: clamp(2rem, 5vw, 3rem);
  --fs-h3: clamp(1.4rem, 3vw, 2rem);
  --fs-body: clamp(0.95rem, 1.2vw, 1.05rem);
  --fs-caption: clamp(0.75rem, 1vw, 0.85rem);
  --fs-small: 0.75rem;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 5rem;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --max-width: 1280px;
  --header-height: 68px;
  --z-header: 100;
  --z-backtop: 90;
  --z-progress: 110;
  --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ===== GLOBAL ===== */
html { background: var(--color-black); color: var(--color-white); font-family: var(--font-body); font-weight: var(--fw-regular); font-size: 16px; line-height: 1.6; }
body { background: var(--color-black); }
::selection { background: var(--color-red); color: var(--color-white); }

/* ===== SKIP LINK ===== */
.skip-link { position: fixed; top: 0; left: 0; z-index: 200; padding: var(--space-sm) var(--space-md); background: var(--color-gold); color: var(--color-black); font-weight: var(--fw-bold); transform: translateY(-120%); transition: transform var(--transition); }
.skip-link:focus { transform: translateY(0); }

/* ===== HEADER ===== */
.site-header { position: fixed; top: 0; left: 0; width: 100%; height: var(--header-height); z-index: var(--z-header); background: rgba(13,13,13,0.72); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border-bottom: 1px solid rgba(255,255,255,0.06); }
.header-inner { display: flex; align-items: center; justify-content: space-between; max-width: var(--max-width); margin: 0 auto; padding: 0 var(--space-lg); height: 100%; }
.brand { display: flex; align-items: center; gap: var(--space-sm); flex-shrink: 0; }
.brand-icon { font-size: 1.6rem; color: var(--color-gold); filter: drop-shadow(0 0 6px rgba(255,215,0,0.3)); transform: skewX(-8deg); display: inline-block; }
.brand-text { font-family: var(--font-heading); font-size: 1.5rem; font-weight: var(--fw-black); color: var(--color-white); letter-spacing: 0.06em; line-height: 1; }
.brand-text::after { content: ''; display: inline-block; width: 4px; height: 4px; background: var(--color-red); border-radius: 50%; margin-left: 4px; vertical-align: super; }

/* Navigation Toggle (mobile) */
.nav-toggle { display: none; flex-direction: column; justify-content: center; align-items: center; width: 44px; height: 44px; gap: 5px; background: var(--color-glass); border-radius: var(--radius-sm); padding: 8px; transition: background var(--transition); }
.nav-toggle:hover { background: rgba(255,255,255,0.12); }
.nav-toggle-line { display: block; width: 22px; height: 2px; background: var(--color-white); border-radius: 2px; transition: transform var(--transition), opacity var(--transition); }
[data-nav-toggle][aria-expanded="true"] .nav-toggle-line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
[data-nav-toggle][aria-expanded="true"] .nav-toggle-line:nth-child(2) { opacity: 0; }
[data-nav-toggle][aria-expanded="true"] .nav-toggle-line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Navigation */
.site-nav { display: flex; align-items: center; }
.nav-list { display: flex; gap: var(--space-xs); }
.nav-item { margin: 0; }
.nav-link { display: block; padding: var(--space-sm) var(--space-md); font-family: var(--font-heading); font-size: var(--fs-caption); font-weight: var(--fw-bold); color: var(--color-gray); text-transform: uppercase; letter-spacing: 0.08em; border-radius: var(--radius-md); transition: color var(--transition), background var(--transition), box-shadow var(--transition); position: relative; background: transparent; }
.nav-link:hover { color: var(--color-white); background: var(--color-glass); }
.nav-link[aria-current="page"] { color: var(--color-gold); background: rgba(255,215,0,0.08); box-shadow: inset 0 -2px 0 var(--color-gold); }

/* ===== FOOTER ===== */
.site-footer { background: rgba(13,13,13,0.95); border-top: 1px solid rgba(255,215,0,0.12); padding: var(--space-2xl) var(--space-lg) var(--space-lg); margin-top: var(--space-2xl); }
.footer-inner { max-width: var(--max-width); margin: 0 auto; display: grid; grid-template-columns: 2fr 1.5fr 1.5fr; gap: var(--space-xl) var(--space-lg); }
.footer-col { min-width: 0; }
.footer-brand-col .footer-brand { display: flex; align-items: center; gap: var(--space-sm); margin-bottom: var(--space-md); }
.footer-brand-col .brand-icon { font-size: 1.8rem; }
.footer-brand-col .brand-text { font-size: 1.4rem; color: var(--color-white); }
.trust-statement { font-size: var(--fs-caption); color: var(--color-gray); line-height: 1.7; max-width: 38ch; }
.footer-heading { font-family: var(--font-heading); font-size: var(--fs-h3); font-weight: var(--fw-bold); color: var(--color-gold); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: var(--space-md); line-height: 1.2; }
.footer-contact-list, .footer-link-list { display: flex; flex-direction: column; gap: var(--space-sm); }
.footer-contact-list li, .footer-link-list li { font-size: var(--fs-body); color: var(--color-gray); line-height: 1.5; }
.footer-contact-list a, .footer-link-list a { color: var(--color-white); transition: color var(--transition); border-bottom: 1px solid transparent; }
.footer-contact-list a:hover, .footer-link-list a:hover { color: var(--color-gold); border-bottom-color: var(--color-gold); }
.footer-bottom { grid-column: 1 / -1; border-top: 1px solid rgba(255,255,255,0.06); padding-top: var(--space-md); margin-top: var(--space-sm); display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: var(--space-sm); }
.footer-icp { font-size: var(--fs-caption); color: var(--color-gray); letter-spacing: 0.03em; }

/* ===== BUTTONS ===== */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--space-sm); padding: 0.65rem 1.6rem; font-family: var(--font-heading); font-size: var(--fs-caption); font-weight: var(--fw-bold); text-transform: uppercase; letter-spacing: 0.08em; border-radius: var(--radius-md); transition: transform var(--transition), box-shadow var(--transition), background var(--transition); border: 1px solid transparent; cursor: pointer; line-height: 1.4; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(230,0,0,0.3); }
.btn-primary { background: var(--color-red); color: var(--color-white); border-color: var(--color-red); }
.btn-primary:hover { background: #cc0000; }
.btn-gold { background: var(--color-gold); color: var(--color-black); border-color: var(--color-gold); }
.btn-gold:hover { background: #e6c200; }
.btn-ghost { background: transparent; color: var(--color-white); border-color: rgba(255,255,255,0.25); }
.btn-ghost:hover { background: var(--color-glass); border-color: var(--color-gold); color: var(--color-gold); }
.btn-gradient { background: var(--gradient-cyber); color: var(--color-white); border: none; }
.btn-gradient:hover { box-shadow: 0 6px 24px rgba(0,212,255,0.35); }
.btn-sm { padding: 0.4rem 1rem; font-size: var(--fs-small); }
.btn-lg { padding: 0.9rem 2.2rem; font-size: var(--fs-body); }

/* ===== BREADCRUMB ===== */
.breadcrumb { display: flex; flex-wrap: wrap; gap: var(--space-sm); align-items: center; padding: var(--space-md) 0; font-size: var(--fs-caption); color: var(--color-gray); }
.breadcrumb a { color: var(--color-gray); transition: color var(--transition); }
.breadcrumb a:hover { color: var(--color-gold); }
.breadcrumb .breadcrumb-current { color: var(--color-white); font-weight: var(--fw-bold); }
.breadcrumb-sep { color: var(--color-gold); margin: 0 var(--space-xs); }

/* ===== SECTION PANELS ===== */
.section-panel { max-width: var(--max-width); margin: 0 auto; padding: var(--space-xl) var(--space-lg); }
.section-narrow { max-width: 320px; margin-right: auto; }
.section-wide { max-width: 100%; }
.section-pair { display: grid; grid-template-columns: 1fr 2.5fr; gap: var(--space-xl); align-items: start; }
@media (max-width: 820px) { .section-pair { grid-template-columns: 1fr; } }

/* ===== CARDS ===== */
.card { background: var(--color-glass); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,0.06); border-radius: var(--radius-lg); padding: var(--space-lg); transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition); }
.card:hover { transform: translateY(-4px); border-color: rgba(255,215,0,0.2); box-shadow: 0 12px 40px rgba(0,0,0,0.5); }
.card-label { font-family: var(--font-heading); font-size: var(--fs-caption); color: var(--color-gold); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: var(--space-sm); }
.card-value { font-family: var(--font-heading); font-size: var(--fs-h2); font-weight: var(--fw-black); color: var(--color-white); line-height: 1.1; }
.card-meta { font-size: var(--fs-caption); color: var(--color-gray); margin-top: var(--space-sm); }

/* ===== TAGS ===== */
.tag { display: inline-flex; align-items: center; padding: 0.2rem 0.8rem; font-family: var(--font-heading); font-size: var(--fs-small); font-weight: var(--fw-bold); text-transform: uppercase; letter-spacing: 0.06em; border-radius: var(--radius-sm); line-height: 1.6; }
.tag-red { background: rgba(230,0,0,0.2); color: var(--color-red); border: 1px solid rgba(230,0,0,0.3); }
.tag-gold { background: rgba(255,215,0,0.15); color: var(--color-gold); border: 1px solid rgba(255,215,0,0.25); }
.tag-cyber { background: linear-gradient(135deg, rgba(0,212,255,0.15), rgba(139,92,246,0.15)); color: var(--color-cyan); border: 1px solid rgba(0,212,255,0.2); }

/* ===== PROGRESS SCROLL ===== */
.progress-scroll { position: fixed; top: var(--header-height); left: 0; width: 0%; height: 3px; z-index: var(--z-progress); background: var(--gradient-cyber); transition: width 0.1s linear; pointer-events: none; }

/* ===== BACK TO TOP ===== */
.back-to-top { position: fixed; bottom: var(--space-lg); right: var(--space-lg); z-index: var(--z-backtop); width: 48px; height: 48px; border-radius: 50%; background: var(--color-glass); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border: 1px solid rgba(255,215,0,0.2); color: var(--color-gold); font-size: 1.4rem; display: flex; align-items: center; justify-content: center; opacity: 0; visibility: hidden; transform: translateY(20px); transition: opacity var(--transition), transform var(--transition), visibility var(--transition), background var(--transition); }
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: rgba(255,215,0,0.15); border-color: var(--color-gold); }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-brand-col { grid-column: 1 / -1; }
}
@media (max-width: 720px) {
  .nav-toggle { display: flex; }
  .site-nav { position: fixed; top: var(--header-height); left: 0; width: 100%; background: rgba(13,13,13,0.96); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border-bottom: 1px solid rgba(255,215,0,0.1); padding: var(--space-md) var(--space-lg); transform: translateY(-10px); opacity: 0; visibility: hidden; transition: transform var(--transition), opacity var(--transition), visibility var(--transition); pointer-events: none; }
  .site-nav[data-open] { transform: translateY(0); opacity: 1; visibility: visible; pointer-events: auto; }
  .nav-list { flex-direction: column; gap: var(--space-xs); }
  .nav-link { padding: var(--space-md); text-align: center; font-size: var(--fs-body); border-radius: var(--radius-md); }
  .nav-link[aria-current="page"] { background: rgba(255,215,0,0.1); box-shadow: none; }
  .footer-inner { grid-template-columns: 1fr; gap: var(--space-lg); }
  .footer-bottom { flex-direction: column; text-align: center; }
  .header-inner { padding: 0 var(--space-md); }
  .back-to-top { bottom: var(--space-md); right: var(--space-md); width: 42px; height: 42px; font-size: 1.2rem; }
}
@media (max-width: 480px) {
  :root { --header-height: 60px; }
  .brand-text { font-size: 1.2rem; }
  .brand-icon { font-size: 1.3rem; }
}

/* ===== PREFERS REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; scroll-behavior: auto !important; }
  .card:hover { transform: none; }
  .btn:hover { transform: none; }
  .back-to-top { transition: opacity 0.01ms; }
}

/* ===== UTILITY ===== */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
.text-center { text-align: center; }
.text-gold { color: var(--color-gold); }
.text-red { color: var(--color-red); }
.text-gray { color: var(--color-gray); }
.gradient-text { background: var(--gradient-cyber); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.gradient-text-fire { background: var(--gradient-fire); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.mt-lg { margin-top: var(--space-lg); }
.mb-lg { margin-bottom: var(--space-lg); }