/* ============================================================
   VKD Apps — Components
   ============================================================ */

/* ---------- Typography helpers ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-alt);
  font-size: var(--fs-micro);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--text-secondary);
  padding: .4rem .9rem;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  background: rgba(255,255,255,.02);
}
.eyebrow::before {
  content: "";
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px 1px var(--accent-dim);
}

.gradient-text { color: var(--accent-bright); }

.section-head { max-width: 700px; margin-bottom: var(--space-xl); }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head h2 { font-size: var(--fs-h2); margin-top: var(--space-sm); }
.section-head p { color: var(--text-secondary); font-size: var(--fs-lead); margin-top: var(--space-sm); }

/* ---------- Buttons ---------- */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .6rem;
  padding: .95rem 1.9rem;
  border-radius: var(--radius-full);
  font-family: var(--font-alt);
  font-weight: 600;
  font-size: .95rem;
  white-space: nowrap;
  transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out), border-color var(--dur-fast);
  will-change: transform;
}
.btn-primary {
  background: var(--gradient-primary);
  color: var(--bg-primary);
  box-shadow: 0 8px 30px -10px var(--accent-dim);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 36px -10px rgba(207,157,79,.45); }
.btn-secondary {
  background: rgba(255,255,255,.03);
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
  backdrop-filter: blur(10px);
}
.btn-secondary:hover { background: rgba(255,255,255,.07); transform: translateY(-2px); }
.btn-disabled {
  background: rgba(255,255,255,.04);
  color: var(--text-tertiary);
  border: 1px solid var(--border-subtle);
  cursor: not-allowed;
}
.btn-block { width: 100%; }
.btn-sm { padding: .65rem 1.3rem; font-size: .85rem; }

/* ---------- Navigation ---------- */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 900;
  transition: transform var(--dur-med) var(--ease-out), background var(--dur-med), border-color var(--dur-med);
  border-bottom: 1px solid transparent;
}
.site-nav.is-scrolled {
  background: rgba(6,6,5,.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
}
.site-nav.nav-hidden { transform: translateY(-100%); }

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
}

.brand { display: flex; align-items: center; gap: .65rem; font-family: var(--font-display); font-weight: 600; font-size: 1.1rem; letter-spacing: -.01em; }
.brand-mark {
  width: 32px; height: 32px;
  border-radius: 8px;
  background: var(--bg-card);
  border: 1px solid var(--accent-border);
  display: grid; place-items: center;
  font-size: .8rem; font-weight: 700;
  color: var(--accent-bright);
  font-family: var(--font-display);
}

.nav-links { display: flex; align-items: center; gap: 2.25rem; }
.nav-links a {
  font-family: var(--font-alt);
  font-size: .92rem;
  color: var(--text-secondary);
  position: relative;
  padding: .4rem 0;
  transition: color var(--dur-fast);
}
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--text-primary); }
.nav-links a::after {
  content: "";
  position: absolute; left: 0; bottom: 0;
  width: 0; height: 1px;
  background: var(--gradient-primary);
  transition: width var(--dur-fast) var(--ease-out);
}
.nav-links a:hover::after, .nav-links a[aria-current="page"]::after { width: 100%; }

.nav-cta { display: flex; align-items: center; gap: 1rem; }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 26px;
  padding: .5rem;
}
.nav-toggle span { display: block; width: 100%; height: 2px; background: #fff; border-radius: 2px; transition: transform var(--dur-fast), opacity var(--dur-fast); }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  inset: var(--nav-h) 0 0 0;
  background: rgba(5,5,5,.98);
  backdrop-filter: blur(20px);
  z-index: 899;
  display: flex;
  flex-direction: column;
  padding: var(--space-xl) var(--container-pad);
  gap: var(--space-md);
  transform: translateX(100%);
  transition: transform var(--dur-med) var(--ease-out);
}
.mobile-menu.open { transform: translateX(0); }
.mobile-menu a { font-size: 1.5rem; font-family: var(--font-display); color: var(--text-primary); }
.mobile-menu .btn { margin-top: var(--space-md); align-self: flex-start; }

@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-cta .btn-secondary { display: none; }
}

/* ---------- Cards ---------- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: transform var(--dur-med) var(--ease-out), border-color var(--dur-fast), background var(--dur-fast);
}
.card:hover { border-color: var(--border-strong); background: var(--bg-card-hover); }

.card-icon {
  width: 46px; height: 46px;
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  display: grid; place-items: center;
  margin-bottom: var(--space-md);
  color: var(--accent-bright);
}
.card-icon svg { width: 21px; height: 21px; }

.grid { display: grid; gap: var(--space-md); min-width: 0; }
.grid > * { min-width: 0; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 980px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: minmax(0, 1fr); } }

/* ---------- Badge ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-size: var(--fs-micro);
  font-family: var(--font-alt);
  font-weight: 600;
  letter-spacing: .05em;
  text-transform: uppercase;
  padding: .3rem .75rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}
.badge-soon {
  color: var(--accent-bright);
  border-color: var(--accent-border);
  background: var(--accent-dim);
}

/* ---------- Product card ---------- */
.product-card {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}
.product-glyph {
  width: 56px; height: 56px;
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  display: grid; place-items: center;
  color: var(--accent-bright);
  flex-shrink: 0;
}
.product-card .product-glyph { margin-bottom: var(--space-sm); }
.product-glyph svg { width: 26px; height: 26px; }
.product-card h3 { font-size: var(--fs-h3); }
.product-card p { color: var(--text-secondary); font-size: var(--fs-small); }
.product-card .tags, .tag-row { display: flex; gap: .5rem; flex-wrap: wrap; margin-top: auto; padding-top: var(--space-sm); }
.product-card .tags span, .tag-row span { font-size: var(--fs-micro); color: var(--text-tertiary); border: 1px solid var(--border-subtle); padding: .25rem .6rem; border-radius: var(--radius-full); }
.card .tag-row { padding-top: var(--space-md); }
.product-card .card-link { display: inline-flex; align-items: center; gap: .4rem; font-size: var(--fs-small); font-weight: 600; margin-top: var(--space-sm); }
.product-card .card-link .arrow { transition: transform var(--dur-fast) var(--ease-out); }
.product-card:hover .card-link .arrow { transform: translateX(4px); }

/* ---------- Stats ---------- */
.stat-item { text-align: center; }
.stat-number {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 3.4vw, 3.5rem);
  font-weight: 600;
  color: var(--text-primary);
}
.stat-label { color: var(--text-secondary); font-size: var(--fs-small); margin-top: .4rem; }

/* ---------- Timeline ---------- */
.timeline { position: relative; }
.timeline::before {
  content: "";
  position: absolute;
  left: 27px; top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(var(--border-strong), transparent);
}
.timeline-item { position: relative; padding-left: 70px; padding-bottom: var(--space-lg); }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot {
  position: absolute; left: 12px; top: 2px;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  display: grid; place-items: center;
  font-size: var(--fs-small); font-weight: 700;
  font-family: var(--font-display);
}
.timeline-item h3 { font-size: var(--fs-h3); margin-bottom: .4rem; }
.timeline-item p { color: var(--text-secondary); }

/* ---------- Testimonials ---------- */
.testimonial-card { display: flex; flex-direction: column; gap: var(--space-md); }
.testimonial-quote { font-size: 1.05rem; color: var(--text-primary); font-family: var(--font-alt); }
.testimonial-person { display: flex; align-items: center; gap: .8rem; margin-top: auto; }
.avatar {
  width: 42px; height: 42px; border-radius: 50%;
  background: var(--bg-secondary);
  border: 1px solid var(--accent-border);
  color: var(--accent-bright);
  display: grid; place-items: center;
  font-weight: 600; font-size: .8rem;
  font-family: var(--font-display);
}
.testimonial-person .name { font-weight: 600; font-size: .92rem; }
.testimonial-person .role { color: var(--text-tertiary); font-size: var(--fs-micro); }

/* ---------- FAQ Accordion ---------- */
.accordion { border-top: 1px solid var(--border-subtle); }
.accordion-item { border-bottom: 1px solid var(--border-subtle); }
.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  text-align: left;
  font-family: var(--font-alt);
  font-weight: 600;
  font-size: 1.02rem;
}
.accordion-trigger .plus {
  flex-shrink: 0;
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  display: grid; place-items: center;
  position: relative;
  transition: transform var(--dur-fast) var(--ease-out);
}
.accordion-trigger .plus::before, .accordion-trigger .plus::after {
  content: ""; position: absolute; background: #fff;
}
.accordion-trigger .plus::before { width: 10px; height: 1px; }
.accordion-trigger .plus::after { width: 1px; height: 10px; transition: opacity var(--dur-fast); }
.accordion-item.open .accordion-trigger .plus { transform: rotate(45deg); }
.accordion-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--dur-med) var(--ease-out);
}
.accordion-panel-inner { padding-bottom: var(--space-md); color: var(--text-secondary); max-width: 65ch; }

/* ---------- Form ---------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-md); }
@media (max-width: 640px) { .form-grid { grid-template-columns: 1fr; } }
.field { display: flex; flex-direction: column; gap: .5rem; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: var(--fs-small); color: var(--text-secondary); font-family: var(--font-alt); }
.field input, .field select, .field textarea {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: .85rem 1rem;
  color: var(--text-primary);
  transition: border-color var(--dur-fast), background var(--dur-fast);
}
.field input:focus, .field select:focus, .field textarea:focus {
  border-color: var(--accent-border);
  background: #151412;
  outline: none;
}
.field textarea { resize: vertical; min-height: 120px; }
.field select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2396938A' fill='none' stroke-width='1.5'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 1rem center; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  padding-block: var(--space-2xl) var(--space-lg);
  background: var(--bg-secondary);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: var(--space-lg);
  padding-bottom: var(--space-xl);
}
@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-col h4 { font-size: var(--fs-small); text-transform: uppercase; letter-spacing: .1em; color: var(--text-tertiary); margin-bottom: var(--space-sm); }
.footer-col a, .footer-col p { color: var(--text-secondary); font-size: .92rem; display: block; margin-bottom: .6rem; transition: color var(--dur-fast); }
.footer-col a:hover { color: var(--text-primary); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-subtle);
  color: var(--text-tertiary);
  font-size: var(--fs-small);
}
.footer-social { display: flex; gap: .8rem; }
.footer-social a {
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border-subtle);
  display: grid; place-items: center;
  transition: border-color var(--dur-fast), transform var(--dur-fast);
}
.footer-social a:hover { border-color: var(--border-strong); transform: translateY(-2px); }

/* ---------- Back to top ---------- */
.back-to-top {
  position: fixed;
  right: 1.75rem; bottom: 1.75rem;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: rgba(255,255,255,.04);
  border: 1px solid var(--border-strong);
  backdrop-filter: blur(10px);
  display: grid; place-items: center;
  opacity: 0; visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--dur-fast), transform var(--dur-fast), visibility var(--dur-fast);
  z-index: 500;
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }

/* ---------- Glass panel ---------- */
.glass {
  background: rgba(255,255,255,.03);
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(14px);
  border-radius: var(--radius-lg);
}

/* ---------- Icon sprite sizing ---------- */
.icon { width: 1em; height: 1em; display: inline-block; }
.icon use { color: inherit; }

/* ---------- Device mockup (screenshot placeholder) ---------- */
.device-row {
  display: flex;
  gap: var(--space-lg);
  justify-content: center;
  flex-wrap: wrap;
}
.device-mock {
  animation: deviceFloat 7s ease-in-out infinite;
}
.device-mock:nth-child(2) { animation-delay: 1.4s; }
.device-mock:nth-child(3) { animation-delay: 2.8s; }
@media (prefers-reduced-motion: reduce) { .device-mock { animation: none; } }

.device-frame {
  width: min(220px, 62vw);
  aspect-ratio: 9 / 18.5;
  border-radius: 34px;
  background: linear-gradient(160deg, #19180f, #0b0b0a);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-soft), 0 0 0 6px rgba(255,255,255,.02) inset;
  padding: 10px;
  position: relative;
}
.device-notch {
  position: absolute;
  top: 10px; left: 50%;
  transform: translateX(-50%);
  width: 64px; height: 16px;
  border-radius: 10px;
  background: #0b0b0a;
  z-index: 2;
}
.device-screen {
  width: 100%; height: 100%;
  border-radius: 24px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 28px 18px;
  position: relative;
  overflow: hidden;
}
.device-screen::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, var(--accent-dim), transparent 62%);
}
.device-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--bg-card);
  border: 1px solid var(--accent-border);
  display: grid; place-items: center;
  color: var(--accent-bright);
  z-index: 1;
}
.device-icon svg { width: 22px; height: 22px; }
.device-skeleton { width: 100%; display: flex; flex-direction: column; gap: 8px; z-index: 1; }
.device-skeleton span { display: block; height: 7px; border-radius: 4px; background: var(--border-strong); }
.device-skeleton span:nth-child(1) { width: 72%; margin-inline: auto; }
.device-skeleton span:nth-child(2) { width: 92%; margin-inline: auto; }
.device-skeleton span:nth-child(3) { width: 52%; margin-inline: auto; }
.device-caption {
  font-family: var(--font-alt);
  font-size: var(--fs-micro);
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: .12em;
  z-index: 1;
}
@keyframes deviceFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* ---------- Real screenshot image (App Store / Play Store) ---------- */
.device-mock .shot-img {
  width: min(240px, 68vw);
  border-radius: 22px;
  display: block;
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--border-subtle);
}

/* ---------- Reveal animation base ---------- */
[data-reveal] { opacity: 0; transform: translateY(28px); transition: opacity .8s var(--ease-out), transform .8s var(--ease-out); }
[data-reveal].in-view { opacity: 1; transform: translateY(0); }

/* ---------- Page hero shared ---------- */
.page-hero { padding-top: calc(var(--nav-h) + var(--space-3xl)); padding-bottom: var(--space-2xl); }
.page-hero h1 { font-size: var(--fs-h1); margin-top: var(--space-md); max-width: 900px; }
.page-hero p.lead { font-size: var(--fs-lead); color: var(--text-secondary); margin-top: var(--space-md); max-width: 640px; }