:root {
  --bg-primary: #0d0d14;
  --bg-secondary: #12121e;
  --bg-card: #1a1a2e;
  --bg-card-hover: #1f1f38;
  --accent: #f5a623;
  --accent-dark: #c4831a;
  --accent2: #00c9ff;
  --text-primary: #e8e8f0;
  --text-secondary: #9090b0;
  --text-muted: #5a5a78;
  --border: #2a2a40;
  --border-accent: rgba(245, 166, 35, 0.3);
  --shadow: 0 4px 24px rgba(0,0,0,0.5);
  --shadow-accent: 0 0 30px rgba(245, 166, 35, 0.15);
  --radius: 12px;
  --radius-sm: 8px;
  --nav-height: 64px;
  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

/* ── NAV ── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  background: rgba(13,13,20,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 2rem;
  z-index: 1000;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--accent);
  letter-spacing: 0.5px;
  flex-shrink: 0;
}

.nav-logo .icon { font-size: 1.6rem; }

.nav-links {
  display: flex;
  gap: 0.25rem;
  list-style: none;
  margin-left: auto;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  transition: color 0.2s, background 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
  background: rgba(245,166,35,0.08);
}

.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  margin-left: auto;
  padding: 8px;
}
.nav-burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

/* ── HERO ── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--nav-height) + 3rem) 2rem 4rem;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 60%, rgba(245,166,35,0.06) 0%, transparent 70%),
    radial-gradient(ellipse 60% 40% at 20% 20%, rgba(0,201,255,0.04) 0%, transparent 60%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(245,166,35,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245,166,35,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 0%, transparent 100%);
}

.hero-content {
  position: relative;
  max-width: 760px;
}

.hero-badge {
  display: inline-block;
  background: rgba(245,166,35,0.12);
  border: 1px solid var(--border-accent);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 5px 16px;
  border-radius: 20px;
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.25rem;
  letter-spacing: -1px;
}

.hero h1 span {
  color: var(--accent);
  text-shadow: 0 0 40px rgba(245,166,35,0.4);
}

.hero p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto 2.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: #000;
}
.btn-primary:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(245,166,35,0.35);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.hero-btns { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

.hero-stats {
  display: flex;
  gap: 3rem;
  justify-content: center;
  margin-top: 4rem;
  flex-wrap: wrap;
}

.stat { text-align: center; }
.stat-num {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
}
.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ── SECTIONS ── */
.section {
  padding: 5rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
  display: block;
}

.section-header h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.5px;
}

.section-header p {
  color: var(--text-secondary);
  margin-top: 0.75rem;
  font-size: 1.05rem;
}

/* ── CARDS ── */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}

.card:hover {
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-accent);
  background: var(--bg-card-hover);
}

.card-icon {
  font-size: 2.2rem;
  margin-bottom: 1rem;
  display: block;
}

.card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
}

.card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  margin-top: 1.25rem;
  transition: gap 0.2s;
}
.card-link:hover { gap: 10px; }

/* ── TANK CARD ── */
.tank-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}

.tank-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-3px);
  box-shadow: var(--shadow-accent);
}

.tank-rank {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--accent);
  min-width: 2.5rem;
  text-align: center;
  line-height: 1;
  padding-top: 4px;
}

.tank-rank.gold { color: #ffd700; }
.tank-rank.silver { color: #c0c0c0; }
.tank-rank.bronze { color: #cd7f32; }

.tank-emoji {
  font-size: 2.5rem;
  min-width: 3rem;
  text-align: center;
}

.tank-info { flex: 1; }

.tank-info h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
}

.tank-meta {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 0.6rem;
}

.tag {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.tag-tier {
  background: rgba(245,166,35,0.15);
  color: var(--accent);
  border: 1px solid rgba(245,166,35,0.3);
}

.tag-class {
  background: rgba(0,201,255,0.1);
  color: var(--accent2);
  border: 1px solid rgba(0,201,255,0.2);
}

.tag-nation {
  background: rgba(255,255,255,0.05);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.tank-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.tank-bars { margin-top: 0.75rem; }

.bar-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.4rem;
  font-size: 0.8rem;
}

.bar-label {
  width: 70px;
  color: var(--text-muted);
  flex-shrink: 0;
}

.bar-track {
  flex: 1;
  height: 5px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--accent), #ffcc00);
  transition: width 1s ease;
}

/* ── GUIDE PAGE ── */
.guide-hero {
  padding: calc(var(--nav-height) + 3rem) 2rem 3rem;
  text-align: center;
  background: linear-gradient(180deg, rgba(245,166,35,0.05) 0%, transparent 100%);
  border-bottom: 1px solid var(--border);
}

.guide-hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  margin-bottom: 0.75rem;
}

.guide-hero p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 500px;
  margin: 0 auto;
}

.guide-filter {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  flex-wrap: wrap;
  padding: 2rem 2rem 0;
}

.filter-btn {
  padding: 7px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  transition: all 0.2s;
}

.filter-btn:hover,
.filter-btn.active {
  background: rgba(245,166,35,0.1);
  border-color: var(--accent);
  color: var(--accent);
}

.guide-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}

.guide-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-accent);
}

.guide-card-img {
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  position: relative;
  overflow: hidden;
}

.guide-card-img.bg-1 { background: linear-gradient(135deg, #1a1a2e, #16213e); }
.guide-card-img.bg-2 { background: linear-gradient(135deg, #1a2a1a, #162816); }
.guide-card-img.bg-3 { background: linear-gradient(135deg, #2a1a1a, #281616); }
.guide-card-img.bg-4 { background: linear-gradient(135deg, #1a1a2e, #0f3460); }
.guide-card-img.bg-5 { background: linear-gradient(135deg, #2a2a1a, #28261a); }
.guide-card-img.bg-6 { background: linear-gradient(135deg, #1a2a2a, #162828); }

.guide-diff {
  position: absolute;
  top: 10px;
  right: 10px;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.diff-easy { background: rgba(0,200,100,0.2); color: #00c864; border: 1px solid rgba(0,200,100,0.3); }
.diff-medium { background: rgba(245,166,35,0.2); color: var(--accent); border: 1px solid var(--border-accent); }
.diff-hard { background: rgba(255,60,60,0.2); color: #ff4040; border: 1px solid rgba(255,60,60,0.3); }

.guide-card-body { padding: 1.25rem; }
.guide-card-body h3 { font-size: 1rem; font-weight: 700; margin-bottom: 0.5rem; }
.guide-card-body p { font-size: 0.875rem; color: var(--text-secondary); line-height: 1.55; }

.guide-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  border-top: 1px solid var(--border);
}

.guide-meta { font-size: 0.8rem; color: var(--text-muted); }

/* ── ABOUT ── */
.about-hero {
  padding: calc(var(--nav-height) + 3rem) 2rem 3rem;
  text-align: center;
}

.about-hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  margin-bottom: 0.75rem;
}

.about-hero p {
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto;
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem;
}

.about-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  margin-bottom: 1.5rem;
}

.about-block h2 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--accent);
}

.about-block p, .about-block li {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 0.5rem;
}

.about-block ul { padding-left: 1.5rem; }

.contacts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: border-color 0.2s, color 0.2s;
}

.contact-item:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.contact-item .ci-icon { font-size: 1.3rem; }

/* ── PAGE HERO (shared) ── */
.page-hero {
  padding: calc(var(--nav-height) + 3rem) 2rem 3rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(245,166,35,0.04) 0%, transparent 100%);
}

.page-hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  margin-bottom: 0.75rem;
}

.page-hero p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 520px;
  margin: 0 auto;
}

/* ── DIVIDER ── */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
  margin: 0 2rem;
}

/* ── FOOTER ── */
footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 3rem 2rem 2rem;
  margin-top: 4rem;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-top: 0.75rem;
  max-width: 280px;
  line-height: 1.6;
}

.footer-col h4 {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 0.5rem; }
.footer-col ul a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: color 0.2s;
}
.footer-col ul a:hover { color: var(--accent); }

.footer-bottom {
  max-width: 1200px;
  margin: 2rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8rem;
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--nav-height);
    left: 0; right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 1rem;
    gap: 0.25rem;
  }
  .nav-burger { display: flex; }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .hero-stats { gap: 2rem; }

  .tank-card { flex-direction: column; }
  .tank-emoji { font-size: 3rem; }
}

@media (max-width: 500px) {
  .grid-2 { grid-template-columns: 1fr; }
}

/* ── ANIMATIONS ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.animate.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── SCROLL TOP ── */
.scroll-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  background: var(--accent);
  color: #000;
  border: none;
  border-radius: 50%;
  font-size: 1.2rem;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s, transform 0.3s;
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
}

.scroll-top.show {
  opacity: 1;
  pointer-events: all;
}

.scroll-top:hover { transform: translateY(-3px); }