/* ========== BUTTONS ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 0.75rem 1.75rem;
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn--primary {
  background: linear-gradient(135deg, var(--accent-gold), #e6a800);
  color: #0a0e17;
}
.btn--primary:hover {
  background: linear-gradient(135deg, #f5cc5a, var(--accent-gold));
  box-shadow:
    var(--shadow-glow-gold),
    0 4px 16px rgba(240, 192, 64, 0.25);
  transform: translateY(-2px);
}
.btn--primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(240, 192, 64, 0.2);
}

.btn--outline {
  border: 1.5px solid var(--border-hover);
  color: var(--text-primary);
  background: transparent;
}
.btn--outline:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  box-shadow:
    var(--shadow-glow-cyan),
    inset 0 0 20px rgba(0, 180, 216, 0.06);
  transform: translateY(-2px);
}
.btn--outline:active {
  transform: translateY(0);
  box-shadow: inset 0 0 12px rgba(0, 180, 216, 0.08);
}

.btn--cyan {
  border: 1.5px solid rgba(0, 180, 216, 0.4);
  color: var(--accent-cyan);
  background: transparent;
}
.btn--cyan:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  box-shadow:
    var(--shadow-glow-cyan),
    inset 0 0 20px rgba(0, 180, 216, 0.06);
  transform: translateY(-2px);
}
.btn--cyan:active {
  transform: translateY(0);
  box-shadow: inset 0 0 12px rgba(0, 180, 216, 0.08);
}

.btn--purple {
  border: 1.5px solid rgba(167, 139, 250, 0.4);
  color: var(--accent-purple);
  background: transparent;
}
.btn--purple:hover {
  border-color: var(--accent-purple);
  color: var(--accent-purple);
  box-shadow:
    var(--shadow-glow-purple),
    inset 0 0 20px rgba(167, 139, 250, 0.06);
  transform: translateY(-2px);
}
.btn--purple:active {
  transform: translateY(0);
  box-shadow: inset 0 0 12px rgba(167, 139, 250, 0.08);
}

.btn--lg {
  padding: 1rem 2.5rem;
  font-size: var(--fs-base);
}

.btn--full {
  width: 100%;
}

/* ========== NAV ========== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition-base);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--font-heading);
  font-size: var(--fs-lg);
  color: var(--text-heading);
}
.nav__logo strong {
  color: var(--accent-cyan);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  margin-left: auto;
}
.nav__links a {
  position: relative;
  font-size: var(--fs-sm);
  color: var(--text-muted);
  transition: color var(--transition-fast);
}
.nav__links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-cyan);
  transition: width var(--transition-base);
}
.nav__links a:hover,
.nav__links a.active {
  color: var(--text-primary);
}
.nav__links a:hover::after,
.nav__links a.active::after {
  width: 100%;
}
.nav__links a.active {
  color: var(--accent-cyan);
}

.nav__cta {
  padding: 0.6rem 1.5rem;
}

/* ========== NAV SOCIALS ========== */
.nav__socials {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: var(--space-xs);
  margin-left: var(--space-xl);
}

.nav__social {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  color: var(--text-muted);
  background: transparent;
  transition: all 250ms cubic-bezier(0.16, 1, 0.3, 1);
}

.nav__social:hover {
  color: var(--text-heading);
  border-color: var(--accent-cyan);
  background: rgba(0, 180, 216, 0.08);
  box-shadow: 0 0 16px rgba(0, 180, 216, 0.15);
  transform: translateY(-2px);
}

.nav__social svg {
  flex-shrink: 0;
}

.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
  z-index: 1001;
}
.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: all var(--transition-base);
  border-radius: 2px;
}

/* Mobile nav */
@media (max-width: 768px) {
  .nav__hamburger { display: flex; }
  .nav__cta { display: none; }
  .nav__socials { display: none; }

  .nav__links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: var(--space-xl);
    padding: var(--space-3xl);
    background: var(--bg-secondary);
    border-left: 1px solid var(--border);
    transition: right var(--transition-slow);
  }
  .nav__links.active {
    right: 0;
  }
  .nav__links a {
    font-size: var(--fs-lg);
  }
  .nav__links a::after {
    display: none;
  }
  .nav__links-cta {
    display: block;
    margin-top: var(--space-lg);
    width: 100%;
  }

  /* Hamburger active state */
  .nav__hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  .nav__hamburger.active span:nth-child(2) {
    opacity: 0;
  }
  .nav__hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }
}

/* ========== CARDS ========== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl) var(--space-xl);
  transition: all var(--transition-slow);
  --mouse-x: 50%;
  --mouse-y: 50%;
}
.card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-8px);
  box-shadow:
    var(--shadow-card),
    0 0 0 1px rgba(255, 255, 255, 0.05);
}

/* Mouse-following radial glow */
.card .card__glow,
.tier-card .card__glow,
.ecosystem__card .card__glow {
  display: none;
}
@supports (background: radial-gradient(at var(--mouse-x) var(--mouse-y), red, blue)) {
  .card:hover,
  .tier-card:hover,
  .ecosystem__card:hover {
    background-image: radial-gradient(
      300px circle at var(--mouse-x) var(--mouse-y),
      rgba(0, 180, 216, 0.08),
      transparent 60%
    );
  }
}

/* Top accent stripe on cards for visual differentiation */
.card::after {
  background: var(--bg-card);
  border-radius: calc(var(--radius-lg) - 1px);
}

/* Top-edge glow line on hover */
.card {
  background-image: linear-gradient(to bottom, transparent 0%, transparent 100%);
  background-size: 100% 2px;
  background-repeat: no-repeat;
  background-position: top center;
}
.card:hover {
  background-image: linear-gradient(90deg, transparent, var(--accent-cyan), var(--accent-gold), transparent);
  background-size: 100% 1px;
  background-repeat: no-repeat;
  background-position: top center;
}

/* Featured card variant -- first and last cards in the grid get extra emphasis */
.grid-6 .card:nth-child(1),
.grid-6 .card:nth-child(6) {
  border-color: rgba(0, 180, 216, 0.15);
}
.grid-6 .card:nth-child(1):hover,
.grid-6 .card:nth-child(6):hover {
  box-shadow:
    var(--shadow-card),
    0 4px 40px rgba(0, 180, 216, 0.12);
}

/* Alternating card top-border accent colors */
.grid-6 .card:nth-child(odd):hover {
  background-image: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
  background-size: 60% 1px;
  background-repeat: no-repeat;
  background-position: top center;
}
.grid-6 .card:nth-child(even):hover {
  background-image: linear-gradient(90deg, transparent, var(--accent-gold), transparent);
  background-size: 60% 1px;
  background-repeat: no-repeat;
  background-position: top center;
}

.card__icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
  transition: all var(--transition-base);
}
.card:hover .card__icon {
  transform: scale(1.08);
}
.card__icon--cyan {
  background: var(--accent-cyan-dim);
  color: var(--accent-cyan);
  box-shadow: 0 0 0 0 transparent;
  transition: box-shadow var(--transition-base);
}
.card:hover .card__icon--cyan {
  box-shadow: 0 0 24px rgba(0, 180, 216, 0.2);
}
.card__icon--gold {
  background: var(--accent-gold-dim);
  color: var(--accent-gold);
  box-shadow: 0 0 0 0 transparent;
  transition: box-shadow var(--transition-base);
}
.card:hover .card__icon--gold {
  box-shadow: 0 0 24px rgba(240, 192, 64, 0.2);
}

.card__title {
  font-size: var(--fs-xl);
  margin-bottom: var(--space-sm);
  transition: color var(--transition-fast);
}
.card:hover .card__title {
  color: var(--text-heading);
}

.card__desc {
  color: var(--text-muted);
  font-size: var(--fs-sm);
  line-height: var(--lh-normal);
}

/* ========== STATS ========== */
.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
  text-align: center;
}

.stats__item {
  padding: var(--space-lg) 0;
}

.stats__number {
  font-family: var(--font-heading);
  font-size: var(--fs-4xl);
  font-weight: var(--fw-bold);
  color: var(--accent-cyan);
}

.stats__suffix {
  font-family: var(--font-heading);
  font-size: var(--fs-2xl);
  font-weight: var(--fw-bold);
  color: var(--accent-cyan);
}

.stats__label {
  display: block;
  font-size: var(--fs-sm);
  color: var(--text-muted);
  margin-top: var(--space-xs);
}

@media (max-width: 768px) {
  .stats__grid { grid-template-columns: repeat(2, 1fr); }
}

/* ========== TIER CARDS ========== */
.tier-card {
  background: rgba(26, 34, 53, 0.6);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl) var(--space-xl);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--transition-slow);
  overflow: visible;
}

/* Inner glow at the top of each tier card */
.tier-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 180, 216, 0.4), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}
.tier-card:hover::before {
  opacity: 1;
}

.tier-card:hover {
  border-color: rgba(255, 255, 255, 0.12);
  transform: translateY(-8px);
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.4),
    0 0 0 1px rgba(255, 255, 255, 0.05);
}

/* Featured tier -- Gold (Starter) */
.tier-card--featured {
  border-color: rgba(240, 192, 64, 0.35);
  background:
    linear-gradient(180deg, rgba(240, 192, 64, 0.08) 0%, rgba(26, 34, 53, 0.6) 35%);
  z-index: 2;
}
.tier-card--featured:hover {
  border-color: rgba(240, 192, 64, 0.5);
  transform: translateY(-8px);
  box-shadow:
    0 12px 48px rgba(240, 192, 64, 0.15),
    0 0 0 1px rgba(240, 192, 64, 0.2);
}
.tier-card--featured::before {
  background: linear-gradient(90deg, transparent, rgba(240, 192, 64, 0.6), transparent);
  opacity: 1;
}

/* Cyan tier -- Growth */
.tier-card--cyan {
  border-color: rgba(0, 180, 216, 0.45);
  background:
    linear-gradient(180deg, rgba(0, 180, 216, 0.10) 0%, rgba(26, 34, 53, 0.6) 35%);
  z-index: 2;
}
.tier-card--cyan:hover {
  border-color: rgba(0, 180, 216, 0.6);
  transform: translateY(-8px);
  box-shadow:
    0 12px 48px rgba(0, 180, 216, 0.20),
    0 0 0 1px rgba(0, 180, 216, 0.2);
}
.tier-card--cyan::before {
  background: linear-gradient(90deg, transparent, rgba(0, 180, 216, 0.6), transparent);
  opacity: 1;
}

/* Purple tier -- Enterprise */
.tier-card--purple {
  border-color: rgba(167, 139, 250, 0.45);
  background:
    linear-gradient(180deg, rgba(167, 139, 250, 0.10) 0%, rgba(26, 34, 53, 0.6) 35%);
  z-index: 2;
}
.tier-card--purple:hover {
  border-color: rgba(167, 139, 250, 0.6);
  transform: translateY(-8px);
  box-shadow:
    0 12px 48px rgba(167, 139, 250, 0.20),
    0 0 0 1px rgba(167, 139, 250, 0.2);
}
.tier-card--purple::before {
  background: linear-gradient(90deg, transparent, rgba(167, 139, 250, 0.6), transparent);
  opacity: 1;
}

.tier-card__badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--accent-gold), #e6a800);
  color: #0a0e17;
  font-family: var(--font-heading);
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  padding: 0.35rem 1.25rem;
  border-radius: var(--radius-full);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  box-shadow: 0 4px 16px rgba(240, 192, 64, 0.3);
}
.tier-card__badge--cyan {
  background: linear-gradient(135deg, var(--accent-cyan), #0090b0);
  box-shadow: 0 4px 16px rgba(0, 180, 216, 0.3);
}
.tier-card__badge--purple {
  background: linear-gradient(135deg, var(--accent-purple), #8b5cf6);
  box-shadow: 0 4px 16px rgba(167, 139, 250, 0.3);
}

.tier-card__header {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--border);
}
.tier-card__header h3 {
  font-size: var(--fs-2xl);
  margin-bottom: var(--space-xs);
  letter-spacing: -0.01em;
}
.tier-card__for {
  color: var(--text-muted);
  font-size: var(--fs-sm);
}

.tier-card__features {
  flex: 1;
  margin-bottom: var(--space-xl);
}
.tier-card__features li {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.65rem 0;
  font-size: var(--fs-sm);
  color: var(--text-primary);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  transition: padding-left var(--transition-fast);
}
.tier-card:hover .tier-card__features li {
  padding-left: 4px;
}
.tier-card__features li:last-child {
  border-bottom: none;
}
.tier-card__features li svg {
  flex-shrink: 0;
}

/* ========== CONTACT FORM ========== */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  max-width: 480px;
}

.contact-form__group input,
.contact-form__group textarea {
  width: 100%;
  padding: 0.875rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--fs-sm);
  transition: border-color var(--transition-fast);
}
.contact-form__group input::placeholder,
.contact-form__group textarea::placeholder {
  color: var(--text-muted);
}
.contact-form__group input:focus,
.contact-form__group textarea:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px var(--accent-cyan-dim);
}

.contact-form__group textarea {
  resize: vertical;
  min-height: 100px;
}

.contact-form__note {
  text-align: center;
  font-size: var(--fs-xs);
  color: var(--text-muted);
}

/* ========== NAV MOBILE CTA (desktop hide) ========== */
.nav__links-cta {
  display: none;
}

/* ========== STATS PREFIX ========== */
.stats__prefix {
  font-family: var(--font-heading);
  font-size: var(--fs-2xl);
  font-weight: var(--fw-bold);
  color: var(--accent-cyan);
}

/* ========== CONTACT FORM GLASS ========== */
.contact-form {
  background: rgba(26, 34, 53, 0.4);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
}