/* ============================================
   FERROS MARKETING SITE — Custom Styles
   ============================================ */

/* ── 1. CSS VARIABLES ────────────────────── */
:root {
  /* Brand teal scale */
  --brand-50: #f0fdfa;
  --brand-100: #ccfbf1;
  --brand-200: #99f6e4;
  --brand-300: #5eead4;
  --brand-400: #2dd4bf;
  --brand-500: #14b8a6;
  --brand-600: #0d9488;
  --brand-700: #0f766e;
  --brand-800: #115e59;
  --brand-900: #134e4a;
  --brand-950: #042f2e;

  /* Surface (dark) */
  --surface-0: #09090b;
  --surface-50: #0f0f12;
  --surface-100: #18181b;
  --surface-200: #27272a;
  --surface-300: #3f3f46;
  --surface-400: #52525b;
  --surface-500: #71717a;
  --surface-600: #a1a1aa;
  --surface-700: #d4d4d8;
  --surface-800: #e4e4e7;
  --surface-900: #f4f4f5;
  --surface-950: #fafafa;

  /* Navy / Gradient */
  --navy: #192B60;
  --navy-deep: #17265D;
  --cyan: #73D5D7;
  --cyan-light: #A3FFFF;
  --accent-cyan: #70B7CC;

  /* Borders */
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-default: rgba(255, 255, 255, 0.1);
  --border-hover: rgba(255, 255, 255, 0.2);
  --border-brand: rgba(20, 184, 166, 0.3);
}

/* ── 2. RESET & BASE ────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body { background: var(--surface-0); color: var(--surface-700); font-family: 'Inter', system-ui, sans-serif; line-height: 1.6; overflow-x: hidden; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }

/* ── 3. TYPOGRAPHY ───────────────────────── */
.gradient-text {
  background: linear-gradient(135deg, var(--cyan-light) 0%, var(--cyan) 30%, var(--brand-500) 60%, var(--brand-600) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.gradient-text-navy {
  background: linear-gradient(135deg, var(--cyan-light) 0%, var(--cyan) 40%, var(--navy) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── 4. NAVIGATION ───────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: all 0.3s ease;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(9, 9, 11, 0.85);
  backdrop-filter: blur(20px) saturate(1.5);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  border-bottom-color: var(--border-subtle);
}

.nav-dropdown {
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all 0.25s ease;
  pointer-events: none;
}
.nav-dropdown-trigger:hover .nav-dropdown,
.nav-dropdown-trigger:focus-within .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

/* Mega menu card items */
.mega-card {
  background: rgba(24, 24, 27, 0.7);
  border: 1px solid var(--border-subtle);
  border-radius: 0.75rem;
  padding: 1.25rem;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.mega-card:hover {
  background: rgba(24, 24, 27, 0.9);
  border-color: var(--border-brand);
  transform: translateY(-1px);
  box-shadow: 0 4px 24px rgba(20, 184, 166, 0.08);
}

/* Mobile menu */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(9, 9, 11, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}
.mobile-menu.open {
  opacity: 1;
  visibility: visible;
}
.mobile-menu-inner {
  transform: translateX(100%);
  transition: transform 0.3s ease;
}
.mobile-menu.open .mobile-menu-inner {
  transform: translateX(0);
}

/* ── 5. BUTTONS ──────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: 0.625rem;
  font-weight: 600;
  font-size: 0.9375rem;
  transition: all 0.2s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--brand-500);
  color: #fff;
  box-shadow: 0 0 20px rgba(20, 184, 166, 0.15);
}
.btn-primary:hover {
  background: var(--brand-600);
  box-shadow: 0 0 30px rgba(20, 184, 166, 0.25);
  transform: translateY(-1px);
}
.btn-ghost {
  border: 1px solid var(--border-default);
  color: var(--surface-800);
}
.btn-ghost:hover {
  border-color: var(--border-hover);
  background: rgba(255, 255, 255, 0.04);
  transform: translateY(-1px);
}
.btn-sm {
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
}
.btn-lg {
  padding: 1rem 2.25rem;
  font-size: 1rem;
}

/* ── 6. CARDS ────────────────────────────── */
.glass-card {
  background: rgba(15, 15, 18, 0.5);
  border: 1px solid var(--border-subtle);
  border-radius: 1rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all 0.3s ease;
}
.glass-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}
.glass-card-static {
  background: rgba(15, 15, 18, 0.5);
  border: 1px solid var(--border-subtle);
  border-radius: 1rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* Product card hover glow */
.product-card {
  position: relative;
  overflow: hidden;
}
.product-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  opacity: 0;
  transition: opacity 0.3s ease;
  background: radial-gradient(600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(20, 184, 166, 0.06), transparent 40%);
}
.product-card:hover::before {
  opacity: 1;
}

/* ── 7. HERO ─────────────────────────────── */
.hero-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.15;
  pointer-events: none;
}
.hero-glow-1 {
  background: var(--brand-500);
  top: -200px;
  right: -100px;
}
.hero-glow-2 {
  background: var(--cyan);
  bottom: -200px;
  left: -100px;
  opacity: 0.08;
}

/* Grid pattern background */
.grid-bg {
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
}

/* ── 8. LOGO MARQUEE ─────────────────────── */
@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
.marquee-track {
  display: flex;
  gap: 4rem;
  animation: marquee 35s linear infinite;
  width: max-content;
}
.marquee-track:hover { animation-play-state: paused; }
.marquee-item {
  opacity: 0.3;
  filter: grayscale(100%) brightness(2);
  transition: all 0.3s ease;
  flex-shrink: 0;
}
.marquee-item:hover {
  opacity: 0.7;
  filter: grayscale(0%) brightness(1);
}

/* ── 9. CODE BLOCKS ──────────────────────── */
.code-block {
  background: var(--surface-100);
  border: 1px solid var(--border-subtle);
  border-radius: 0.75rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.875rem;
  line-height: 1.7;
  overflow-x: auto;
}
.code-block .line-number {
  color: var(--surface-400);
  user-select: none;
  text-align: right;
  padding-right: 1rem;
  min-width: 2.5rem;
  display: inline-block;
}
.token-keyword { color: var(--brand-400); }
.token-string { color: var(--cyan); }
.token-comment { color: var(--surface-500); font-style: italic; }
.token-property { color: var(--surface-800); }
.token-value { color: var(--brand-300); }
.token-method { color: #c084fc; }
.token-url { color: var(--cyan-light); }
.token-punct { color: var(--surface-500); }

/* Code tabs */
.code-tab {
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
  color: var(--surface-500);
  border-bottom: 2px solid transparent;
  transition: all 0.2s ease;
}
.code-tab.active {
  color: var(--brand-400);
  border-bottom-color: var(--brand-500);
}
.code-tab:hover:not(.active) {
  color: var(--surface-700);
}

/* ── 10. ANIMATIONS ──────────────────────── */
@keyframes fade-in-up {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes slide-in-right {
  from { opacity: 0; transform: translateX(24px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes gradient-shift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}
@keyframes pulse-glow {
  0%, 100% { opacity: 0.15; }
  50% { opacity: 0.25; }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* Scroll-triggered animations */
[data-animate] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
[data-animate="fade-in"] {
  transform: none;
}
[data-animate="slide-right"] {
  transform: translateX(24px);
}
[data-animate="slide-left"] {
  transform: translateX(-24px);
}
[data-animate="scale-in"] {
  transform: scale(0.95);
}
[data-animate].visible {
  opacity: 1;
  transform: translateY(0) translateX(0) scale(1);
}

/* Stagger children */
[data-animate-stagger] > * {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
[data-animate-stagger].visible > *:nth-child(1) { transition-delay: 0ms; }
[data-animate-stagger].visible > *:nth-child(2) { transition-delay: 80ms; }
[data-animate-stagger].visible > *:nth-child(3) { transition-delay: 160ms; }
[data-animate-stagger].visible > *:nth-child(4) { transition-delay: 240ms; }
[data-animate-stagger].visible > *:nth-child(5) { transition-delay: 320ms; }
[data-animate-stagger].visible > *:nth-child(6) { transition-delay: 400ms; }
[data-animate-stagger].visible > * {
  opacity: 1;
  transform: translateY(0);
}

/* ── 11. SECTION DIVIDERS ────────────────── */
.section-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-default), transparent);
}
.section-divider-brand {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--brand-500), transparent);
}

/* ── 12. PRICING ─────────────────────────── */
.pricing-card {
  position: relative;
}
.pricing-card-featured {
  border-color: var(--brand-500);
  box-shadow: 0 0 40px rgba(20, 184, 166, 0.1);
}
.pricing-card-featured::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(180deg, var(--brand-500), transparent 60%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

/* Feature check / x */
.feature-check { color: var(--brand-400); }
.feature-x { color: var(--surface-400); }

/* ── 13. FAQ ACCORDION ───────────────────── */
.faq-item { border-bottom: 1px solid var(--border-subtle); }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 0;
  text-align: left;
  color: var(--surface-800);
  font-weight: 500;
  cursor: pointer;
}
.faq-question svg { transition: transform 0.2s ease; flex-shrink: 0; }
.faq-item.open .faq-question svg { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}
.faq-item.open .faq-answer {
  max-height: 500px;
  padding-bottom: 1.25rem;
}

/* ── 14. COMPARISON TABLE ────────────────── */
.comparison-table th,
.comparison-table td {
  padding: 0.875rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
  text-align: left;
}
.comparison-table th { color: var(--surface-600); font-weight: 500; font-size: 0.8125rem; text-transform: uppercase; letter-spacing: 0.05em; }
.comparison-table td { color: var(--surface-700); font-size: 0.875rem; }
.comparison-table tbody tr:hover { background: rgba(255,255,255,0.02); }

/* ── 15. CHAIN ICONS ─────────────────────── */
.chain-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--surface-900);
  opacity: 0.7;
  transition: opacity 0.2s ease;
}
.chain-icon:hover { opacity: 1; }

/* ── 16. FOOTER ──────────────────────────── */
.footer-link {
  color: var(--surface-500);
  font-size: 0.875rem;
  transition: color 0.2s ease;
}
.footer-link:hover { color: var(--surface-800); }

/* ── 17. DASHBOARD MOCK ──────────────────── */
.dashboard-mock {
  background: var(--surface-100);
  border: 1px solid var(--border-default);
  border-radius: 0.75rem;
  overflow: hidden;
}
.dashboard-mock-bar {
  background: var(--surface-50);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.5rem 0.75rem;
  display: flex;
  gap: 0.375rem;
}
.dashboard-mock-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--surface-300);
}

/* ── 18. RESPONSIVE ──────────────────────── */
@media (max-width: 1024px) {
  .hero-glow { width: 400px; height: 400px; }
}
@media (max-width: 768px) {
  .hero-glow { width: 250px; height: 250px; }
  .marquee-track { gap: 2rem; }
}

/* ── 19. SCROLLBAR ───────────────────────── */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--surface-0); }
::-webkit-scrollbar-thumb { background: var(--surface-300); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--surface-400); }

/* ── 20. MISC UTILITIES ──────────────────── */
.text-balance { text-wrap: balance; }
.bg-gradient-brand { background: linear-gradient(135deg, var(--navy-deep) 0%, var(--navy) 30%, var(--brand-800) 70%, var(--brand-700) 100%); }
.bg-gradient-cta { background: linear-gradient(135deg, var(--navy-deep) 0%, var(--brand-900) 50%, var(--brand-800) 100%); }
.border-gradient {
  border: 1px solid transparent;
  background-clip: padding-box;
  background-origin: padding-box;
}

/* Step connector line */
.step-connector {
  position: absolute;
  top: 2rem;
  left: calc(50% + 2rem);
  width: calc(100% - 4rem);
  height: 1px;
  background: linear-gradient(90deg, var(--brand-500), var(--border-default));
}