/* ============================================================
   CHUB-AI.EU — styles.css
   Brand: dark bg #151114, accent #6D57DC, gradient purple-green
   ============================================================ */

/* ── CSS VARIABLES ── */
:root {
  --bg:             #151114;
  --bg-alt:         #0f0d11;
  --surface:        #141414;
  --surface-2:      #1c1920;
  --surface-3:      #221f28;
  --accent:         #6D57DC;
  --accent-hover:   #7d69e8;
  --accent-light:   rgba(109, 87, 220, 0.15);
  --green:          rgb(144, 238, 144);
  --green-dim:      rgba(144, 238, 144, 0.15);
  --gradient:       linear-gradient(139.84deg, #A692ED 14.35%, #6CECAD 45.6%, #CF9FFF 82.79%);
  --gradient-bg:    rgba(166, 146, 237, 0.08);
  --text:           #F5F5F5;
  --text-muted:     rgba(255, 255, 255, 0.55);
  --text-faint:     rgba(255, 255, 255, 0.3);
  --border:         rgba(255, 255, 255, 0.08);
  --border-accent:  rgba(109, 87, 220, 0.35);
  --radius:         16px;
  --radius-sm:      10px;
  --radius-pill:    999px;
  --font:           "Futura", "Nunito", "Segoe UI", system-ui, sans-serif;
  --transition:     0.22s ease;
  --max-w:          1200px;
}

/* ── RESET & BASE ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; color: inherit; }

/* ── UTILITY ── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
}

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-pill);
  font-family: var(--font);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  transition: background var(--transition), color var(--transition), border-color var(--transition), opacity var(--transition);
  white-space: nowrap;
  text-decoration: none;
}

.btn--primary {
  background: var(--accent);
  color: #fff;
}
.btn--primary:hover {
  background: var(--accent-hover);
}

.btn--ghost {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border);
}
.btn--ghost:hover {
  border-color: var(--accent);
  color: #fff;
}

.btn--nav {
  background: var(--accent);
  color: #fff;
  padding: 9px 20px;
  font-size: 0.88rem;
}
.btn--nav:hover { background: var(--accent-hover); }

.btn--card {
  background: var(--accent-light);
  color: var(--accent-hover);
  border: 1.5px solid var(--border-accent);
  padding: 9px 18px;
  font-size: 0.85rem;
  width: 100%;
  margin-top: auto;
}
.btn--card:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.btn--lg  { padding: 14px 32px; font-size: 1rem; }
.btn--xl  { padding: 18px 48px; font-size: 1.1rem; }
.btn--full { width: 100%; }

/* ── NAV ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(21, 17, 20, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}

.nav__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav__logo {
  font-size: 1.3rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--text);
  flex-shrink: 0;
}
.nav__logo-accent {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav__links {
  display: flex;
  gap: 28px;
  margin-left: auto;
}
.nav__links a {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color var(--transition);
  font-weight: 600;
}
.nav__links a:hover { color: var(--text); }

.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  margin-left: auto;
  padding: 4px;
}
.nav__burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

.nav__mobile {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 16px 24px 20px;
  border-top: 1px solid var(--border);
  background: var(--bg);
}
.nav__mobile a {
  padding: 10px 0;
  font-size: 1rem;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  font-weight: 600;
}
.nav__mobile a:last-child { border-bottom: none; margin-top: 8px; }
.nav__mobile .btn--nav {
  text-align: center;
  border-radius: var(--radius-pill);
  margin-top: 4px;
}
.nav__mobile.open { display: flex; }

/* ── HERO ── */
.hero {
  position: relative;
  overflow: hidden;
  padding: 100px 0 80px;
  text-align: center;
}

.hero__bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  opacity: 0.22;
}
.hero__bg-orb--1 {
  width: 600px;
  height: 600px;
  background: #A692ED;
  top: -200px;
  left: -100px;
}
.hero__bg-orb--2 {
  width: 500px;
  height: 500px;
  background: #6CECAD;
  bottom: -150px;
  right: -80px;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--surface-3);
  border: 1px solid var(--border-accent);
  color: var(--text-muted);
  font-size: 0.83rem;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 28px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.hero__headline {
  font-size: clamp(2.6rem, 7vw, 5.5rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  max-width: 800px;
}

.hero__sub {
  font-size: clamp(1.05rem, 2.5vw, 1.35rem);
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 16px;
}

.hero__desc {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 560px;
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 60px;
}

.hero__stats {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
  justify-content: center;
  padding: 28px 40px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.hero__stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.hero__stat-num {
  font-size: 1.8rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1;
}
.hero__stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ── PROOF BAR ── */
.proof-bar {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
  overflow: hidden;
}

.proof-bar__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.proof-bar__item {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.proof-bar__sep {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

/* ── SECTIONS ── */
.section {
  padding: 96px 0;
}
.section--alt {
  background: var(--bg-alt);
}

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

.section__label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-hover);
  background: var(--accent-light);
  border: 1px solid var(--border-accent);
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
}

.section__title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 900;
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin-bottom: 16px;
}

.section__desc {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

.section__cta {
  text-align: center;
  margin-top: 48px;
}

/* ── CHARACTER GRID ── */
.char-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.char-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition), transform var(--transition);
}
.char-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-3px);
}

.char-card__avatar {
  height: 130px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  flex-shrink: 0;
}

.char-card__avatar--1 { background: linear-gradient(135deg, #2a1f4a, #1a1535); }
.char-card__avatar--2 { background: linear-gradient(135deg, #142a1a, #0d1f12); }
.char-card__avatar--3 { background: linear-gradient(135deg, #2a1515, #1a0d0d); }
.char-card__avatar--4 { background: linear-gradient(135deg, #1a1a35, #0d0d22); }
.char-card__avatar--5 { background: linear-gradient(135deg, #2a1a28, #1a0d18); }
.char-card__avatar--6 { background: linear-gradient(135deg, #1a2535, #0d1722); }
.char-card__avatar--7 { background: linear-gradient(135deg, #252a1a, #181c0d); }
.char-card__avatar--8 { background: linear-gradient(135deg, #1f1a2a, #130d1a); }

.char-card__body {
  padding: 18px;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 10px;
}

.char-card__tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.tag {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: var(--green-dim);
  color: var(--green);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border: 1px solid rgba(144, 238, 144, 0.2);
}

.tag--green {
  background: var(--green-dim);
  color: var(--green);
  border-color: rgba(144, 238, 144, 0.2);
}

.char-card__name {
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.char-card__desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
  flex: 1;
}

/* ── FEATURES ── */
.feat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feat-card {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: border-color var(--transition), transform var(--transition);
}
.feat-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-3px);
}

.feat-card__icon {
  font-size: 2rem;
  margin-bottom: 16px;
  display: block;
}

.feat-card__title {
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.feat-card__desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ── GALLERY ── */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto auto;
  gap: 20px;
}

.gallery-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition);
}
.gallery-card:hover { border-color: var(--border-accent); }

.gallery-card--wide {
  grid-column: span 2;
}

.gallery-card__inner {
  padding: 32px 28px;
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.gallery-card__dot {
  font-size: 2.2rem;
}

.gallery-card__title {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.gallery-card__desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
  flex: 1;
}

.gallery-card__tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 4px;
}

/* ── PRICING ── */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  align-items: start;
}

.pricing-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.pricing-card--featured {
  border-color: var(--accent);
  background: linear-gradient(180deg, rgba(109, 87, 220, 0.08) 0%, var(--surface) 100%);
}

.pricing-card__badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 16px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}

.pricing-card__header {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pricing-card__name {
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.pricing-card__price {
  display: flex;
  align-items: baseline;
  gap: 6px;
}
.pricing-card__amount {
  font-size: 2.4rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1;
}
.pricing-card__period {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 600;
}

.pricing-card__features {
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.pricing-card__features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text);
  font-weight: 500;
}
.pricing-card__features li.disabled {
  color: var(--text-faint);
}

.check {
  color: var(--green);
  font-weight: 900;
  font-size: 1rem;
  flex-shrink: 0;
}
.cross {
  color: var(--text-faint);
  font-size: 0.85rem;
  flex-shrink: 0;
}

/* ── FAQ ── */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--surface);
  transition: border-color var(--transition);
}
.faq-item:hover {
  border-color: var(--border-accent);
}
.faq-item.open {
  border-color: var(--border-accent);
}

.faq-item__q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  text-align: left;
  font-size: 0.97rem;
  font-weight: 700;
  cursor: pointer;
  color: var(--text);
  transition: color var(--transition);
}
.faq-item__q:hover { color: #fff; }

.faq-item__icon {
  font-size: 1.4rem;
  font-weight: 300;
  flex-shrink: 0;
  color: var(--accent-hover);
  transition: transform var(--transition);
  line-height: 1;
}
.faq-item.open .faq-item__icon {
  transform: rotate(45deg);
}

.faq-item__a {
  padding: 0 24px 20px;
  font-size: 0.93rem;
  color: var(--text-muted);
  line-height: 1.7;
}
.faq-item__a[hidden] { display: none; }
.faq-item__a p { margin: 0; }

/* ── FINAL CTA ── */
.cta-section {
  padding: 100px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 800px 400px at 50% 50%, rgba(166, 146, 237, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.cta-section__inner {
  position: relative;
  z-index: 1;
}

.cta-section__title {
  font-size: clamp(2rem, 5vw, 3.8rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.cta-section__desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 36px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

.cta-section__note {
  margin-top: 16px;
  font-size: 0.82rem;
  color: var(--text-faint);
}

/* ── FOOTER ── */
.footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
}

.footer__inner {
  display: grid;
  grid-template-columns: 1.8fr 1fr;
  gap: 60px;
  padding: 64px 24px 48px;
  max-width: var(--max-w);
  margin: 0 auto;
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer__tagline {
  font-size: 0.9rem;
  color: var(--text-muted);
  max-width: 340px;
  line-height: 1.65;
}

.footer__social {
  display: flex;
  gap: 12px;
  margin-top: 4px;
}

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-muted);
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}
.footer__social-link:hover {
  color: var(--text);
  border-color: var(--border-accent);
  background: var(--accent-light);
}

.footer__links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.footer__col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer__col-title {
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.footer__col a {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color var(--transition);
  font-weight: 500;
}
.footer__col a:hover { color: var(--text); }

.footer__bottom {
  border-top: 1px solid var(--border);
  padding: 20px 24px;
  text-align: center;
}
.footer__bottom p {
  font-size: 0.78rem;
  color: var(--text-faint);
  line-height: 1.6;
}

/* ── CHARACTER CARD IMAGE ── */
.character-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
}

/* ── GALLERY IMAGE ── */
.gallery__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
  transition: transform 0.3s;
}

/* ── CHARACTERS SUBSECTIONS ── */
.characters__subsection {
  margin-bottom: 48px;
}
.characters__subsection:last-child {
  margin-bottom: 0;
}

.characters__subsection-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
}
.characters__subsection-title::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 20px;
  background: var(--accent);
  border-radius: 2px;
}

/* ── SCROLLED NAV ── */
.nav.scrolled {
  background: rgba(21, 17, 20, 0.97);
}

/* ── ANIMATIONS ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.animate-fadeup {
  animation: fadeUp 0.55s ease both;
}
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .char-grid  { grid-template-columns: repeat(2, 1fr); }
  .feat-grid  { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: 1fr; max-width: 440px; margin: 0 auto; }
  .gallery-grid { grid-template-columns: 1fr; }
  .gallery-card--wide { grid-column: span 1; }
  .footer__inner { grid-template-columns: 1fr; gap: 40px; }
  .footer__links { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__inner .btn--nav { display: none; }
  .nav__burger { display: flex; }

  .hero { padding: 72px 0 56px; }

  .hero__stats {
    gap: 24px;
    padding: 20px 24px;
  }

  .char-grid  { grid-template-columns: 1fr; }
  .feat-grid  { grid-template-columns: 1fr; }
  .footer__links { grid-template-columns: repeat(2, 1fr); }

  .proof-bar__inner { gap: 14px; }
  .proof-bar__sep   { display: none; }

  .section { padding: 72px 0; }
}

@media (max-width: 480px) {
  .hero__actions { flex-direction: column; align-items: stretch; }
  .hero__actions .btn { text-align: center; }
  .footer__links { grid-template-columns: 1fr; }
  .hero__stats { gap: 20px; }
}

/* Language links */
.footer__langs {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 10px;
}
.footer__langs a {
  font-size: 12px;
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  opacity: 0.7;
  transition: color 0.2s, opacity 0.2s;
}
.footer__langs a:hover {
  color: var(--accent);
  opacity: 1;
}