/* ============================================================
   DDTApps Design System — Components
   Buttons, nav, footer, cards, badges, pricing, accordion, forms.
   ============================================================ */

/* ---------------- Buttons ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: 0.85rem 1.7rem;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  border-radius: var(--r-pill);
  transition: transform var(--dur-med) var(--ease-spring),
              box-shadow var(--dur-med) var(--ease-out),
              background var(--dur-med) var(--ease-out),
              border-color var(--dur-med) var(--ease-out);
  will-change: transform;
  white-space: nowrap;
}

.btn:active { transform: scale(0.97); }

.btn--primary {
  background: var(--accent);
  color: #fff;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18),
              0 10px 28px -10px var(--accent-glow);
}
.btn--primary:hover {
  background: var(--accent-hi);
  transform: translateY(-2px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.22),
              0 18px 40px -12px var(--accent-glow);
}

.btn--ghost {
  background: var(--glass);
  color: var(--text-hi);
  border: 1px solid var(--line-strong);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
}
.btn--ghost:hover {
  background: var(--glass-strong);
  border-color: var(--accent);
  transform: translateY(-2px);
}

.btn--lg { padding: 1.05rem 2.2rem; font-size: 1.02rem; }
.btn--sm { padding: 0.55rem 1.15rem; font-size: 0.85rem; }
.btn--block { width: 100%; }

.btn .btn-arrow { transition: transform var(--dur-med) var(--ease-spring); }
.btn:hover .btn-arrow { transform: translateX(4px); }

/* ---------------- Header / Nav ---------------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background var(--dur-med) var(--ease-out),
              border-color var(--dur-med) var(--ease-out);
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  background: rgba(10, 10, 18, 0.72);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border-bottom-color: var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-5);
  height: 72px;
}

.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text-hi);
  letter-spacing: -0.01em;
}

.nav__logo {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  box-shadow: 0 4px 16px -4px var(--accent-glow);
}

.nav__links {
  display: none;
  align-items: center;
  gap: var(--sp-6);
}

.nav__link {
  position: relative;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-md);
  transition: color var(--dur-fast) var(--ease-out);
  padding-block: var(--sp-2);
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--gradient);
  transition: right var(--dur-med) var(--ease-out);
}

.nav__link:hover, .nav__link[aria-current="page"] { color: var(--text-hi); }
.nav__link:hover::after, .nav__link[aria-current="page"]::after { right: 0; }

.nav__cta { display: none; }

.nav__toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  padding: 10px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line);
  background: var(--glass);
}

.nav__toggle span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--text-hi);
  transition: transform var(--dur-med) var(--ease-out),
              opacity var(--dur-fast) var(--ease-out);
}

.nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.nav__mobile {
  position: fixed;
  inset: 72px 0 auto 0;
  z-index: 99;
  padding: var(--sp-5) var(--gutter) var(--sp-7);
  background: rgba(10, 10, 18, 0.96);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border-bottom: 1px solid var(--line);
  display: grid;
  gap: var(--sp-2);
  transform: translateY(-110%);
  transition: transform var(--dur-med) var(--ease-out);
}

.nav__mobile.is-open { transform: translateY(0); }

.nav__mobile .nav__link {
  font-size: 1.15rem;
  font-family: var(--font-display);
  padding: var(--sp-3) 0;
  border-bottom: 1px solid var(--line);
}

.nav__mobile .btn { margin-top: var(--sp-4); }

@media (min-width: 900px) {
  .nav__links { display: flex; }
  .nav__cta { display: inline-flex; }
  .nav__toggle, .nav__mobile { display: none; }
}

/* ---------------- Footer ---------------- */
.site-footer {
  border-top: 1px solid var(--line);
  background: var(--ink-950);
  padding: var(--sp-8) 0 var(--sp-6);
  position: relative;
  z-index: 1;
}

.footer-grid {
  display: grid;
  gap: var(--sp-7);
}

@media (min-width: 800px) {
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; }
}

.footer-brand p {
  margin-top: var(--sp-4);
  font-size: var(--fs-small);
  max-width: 34ch;
}

.footer-col h4 {
  font-size: var(--fs-micro);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--text-lo);
  margin-bottom: var(--sp-4);
  font-family: var(--font-body);
  font-weight: 600;
}

.footer-col ul { display: grid; gap: var(--sp-3); }

.footer-col a {
  font-size: var(--fs-small);
  color: var(--text-md);
  transition: color var(--dur-fast) var(--ease-out);
}
.footer-col a:hover { color: var(--text-hi); }

.footer-bottom {
  margin-top: var(--sp-8);
  padding-top: var(--sp-5);
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  justify-content: space-between;
  font-size: var(--fs-micro);
  color: var(--text-lo);
}

/* ---------------- Cards ---------------- */
.card {
  position: relative;
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: var(--sp-6);
  transition: transform var(--dur-med) var(--ease-out),
              border-color var(--dur-med) var(--ease-out),
              background var(--dur-med) var(--ease-out),
              box-shadow var(--dur-med) var(--ease-out);
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  background: var(--glass-strong);
  box-shadow: var(--shadow-md);
}

.card__icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: var(--r-md);
  background: var(--accent-soft);
  color: var(--accent-hi);
  margin-bottom: var(--sp-5);
}

.card__icon svg { width: 24px; height: 24px; }

.card h3 { margin-bottom: var(--sp-3); font-size: 1.15rem; }
.card p { font-size: var(--fs-small); }

/* ---------------- Product showcase cards ---------------- */
.showcase-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--sp-5);
  padding: clamp(1.75rem, 4vw, 3rem);
  border-radius: var(--r-xl);
  border: 1px solid var(--line);
  background: var(--ink-850);
  overflow: hidden;
  isolation: isolate;
  transition: transform var(--dur-slow) var(--ease-out),
              border-color var(--dur-med) var(--ease-out),
              box-shadow var(--dur-slow) var(--ease-out);
}

.showcase-card::before {
  content: "";
  position: absolute;
  inset: -40% -20% auto auto;
  width: 70%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow), transparent 65%);
  filter: blur(20px);
  z-index: -1;
  transition: transform var(--dur-slow) var(--ease-out);
}

.showcase-card:hover {
  transform: translateY(-6px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-lg);
}
.showcase-card:hover::before { transform: scale(1.25); }

.showcase-card__top {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
}

.showcase-card__logo {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.4rem;
  color: #fff;
  background: var(--gradient);
  box-shadow: var(--shadow-accent);
  flex-shrink: 0;
  overflow: hidden;
}

.showcase-card__logo img,
.product-hero__logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.showcase-card__name {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-hi);
  letter-spacing: -0.01em;
}

.showcase-card__tag { font-size: var(--fs-small); color: var(--accent-hi); font-weight: 500; }

.showcase-card__desc { font-size: 0.98rem; max-width: 52ch; }

.showcase-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
}

.showcase-card__foot {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  padding-top: var(--sp-4);
}

.showcase-card__price { font-size: var(--fs-small); color: var(--text-lo); }
.showcase-card__price strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--text-hi);
}

/* ---------------- Badges & chips ---------------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 0.35rem 0.85rem;
  font-size: var(--fs-micro);
  font-weight: 600;
  letter-spacing: 0.04em;
  border-radius: var(--r-pill);
  background: var(--accent-soft);
  color: var(--accent-hi);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
}

.chip--neutral {
  background: var(--glass);
  color: var(--text-md);
  border-color: var(--line);
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3) var(--sp-6);
  align-items: center;
}

.trust-item {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--fs-small);
  font-weight: 500;
  color: var(--text-md);
}

.trust-item svg { width: 18px; height: 18px; color: var(--accent-hi); flex-shrink: 0; }

/* Store badges */
.store-badges { display: flex; flex-wrap: wrap; gap: var(--sp-3); }

.store-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
  padding: 0.7rem 1.2rem;
  border-radius: var(--r-md);
  border: 1px solid var(--line-strong);
  background: var(--glass);
  transition: transform var(--dur-med) var(--ease-spring),
              border-color var(--dur-med) var(--ease-out),
              background var(--dur-med) var(--ease-out);
}

.store-badge:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  background: var(--glass-strong);
}

.store-badge svg { width: 22px; height: 22px; color: var(--text-hi); }

.store-badge small {
  display: block;
  font-size: 0.65rem;
  color: var(--text-lo);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.store-badge strong {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-hi);
  line-height: 1.2;
}

/* ---------------- Pricing ---------------- */
.pricing-grid {
  display: grid;
  gap: var(--sp-5);
  align-items: stretch;
}

@media (min-width: 760px) { .pricing-grid--3 { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1024px) { .pricing-grid--4 { grid-template-columns: repeat(4, 1fr); } }

.plan-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: var(--sp-6);
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: var(--glass);
  text-align: left;
  cursor: pointer;
  transition: transform var(--dur-med) var(--ease-out),
              border-color var(--dur-med) var(--ease-out),
              background var(--dur-med) var(--ease-out),
              box-shadow var(--dur-med) var(--ease-out);
}

.plan-card:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  background: var(--glass-strong);
}

.plan-card.is-selected {
  border-color: var(--accent);
  background: var(--accent-soft);
  box-shadow: var(--shadow-accent);
}

.plan-card--featured {
  border-color: color-mix(in srgb, var(--accent) 45%, transparent);
  background: linear-gradient(180deg, var(--accent-soft), var(--glass));
}

.plan-card__badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  padding: 0.25rem 0.9rem;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #fff;
  background: var(--accent);
  border-radius: var(--r-pill);
  box-shadow: 0 8px 20px -8px var(--accent-glow);
  white-space: nowrap;
}

.plan-card__name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text-hi);
}

.plan-card__trial {
  font-size: var(--fs-micro);
  color: var(--accent-hi);
  font-weight: 600;
  margin-top: var(--sp-1);
}

.plan-card__price {
  margin-top: var(--sp-4);
  display: flex;
  align-items: baseline;
  gap: var(--sp-2);
}

.plan-card__amount {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-hi);
}

.plan-card__period { font-size: var(--fs-small); color: var(--text-lo); }

.plan-card__features {
  margin-top: var(--sp-5);
  display: grid;
  gap: var(--sp-3);
  font-size: var(--fs-small);
}

.plan-card__features li {
  display: flex;
  gap: var(--sp-2);
  align-items: flex-start;
}

.plan-card__features svg {
  width: 16px; height: 16px;
  margin-top: 3px;
  color: var(--accent-hi);
  flex-shrink: 0;
}

.plan-card__check {
  position: absolute;
  top: var(--sp-4);
  right: var(--sp-4);
  width: 22px; height: 22px;
  border-radius: 50%;
  border: 2px solid var(--line-strong);
  display: grid;
  place-items: center;
  transition: all var(--dur-fast) var(--ease-out);
}

.plan-card__check svg { width: 12px; height: 12px; color: #fff; opacity: 0; }

.plan-card.is-selected .plan-card__check {
  background: var(--accent);
  border-color: var(--accent);
}
.plan-card.is-selected .plan-card__check svg { opacity: 1; }

.checkout-bar {
  margin-top: var(--sp-7);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-4);
}

.checkout-bar__note {
  font-size: var(--fs-micro);
  color: var(--text-lo);
  text-align: center;
  max-width: 46ch;
}

/* ---------------- Accordion (FAQ) ---------------- */
.accordion { display: grid; gap: var(--sp-3); }

.accordion__item {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--glass);
  overflow: hidden;
  transition: border-color var(--dur-med) var(--ease-out);
}

.accordion__item.is-open { border-color: var(--line-strong); }

.accordion__btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  padding: var(--sp-4) var(--sp-5);
  text-align: left;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--text-hi);
}

.accordion__btn svg {
  width: 18px; height: 18px;
  flex-shrink: 0;
  color: var(--accent-hi);
  transition: transform var(--dur-med) var(--ease-out);
}

.accordion__item.is-open .accordion__btn svg { transform: rotate(45deg); }

.accordion__panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--dur-med) var(--ease-out);
}

.accordion__item.is-open .accordion__panel { grid-template-rows: 1fr; }

.accordion__inner { overflow: hidden; }

.accordion__inner p {
  padding: 0 var(--sp-5) var(--sp-5);
  font-size: var(--fs-small);
}

/* ---------------- Forms (contact) ---------------- */
.form { display: grid; gap: var(--sp-5); }

.form-row {
  display: grid;
  gap: var(--sp-5);
}
@media (min-width: 640px) { .form-row--2 { grid-template-columns: 1fr 1fr; } }

.field { display: grid; gap: var(--sp-2); }

.field label {
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--text-hi);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.85rem 1.1rem;
  color: var(--text-hi);
  background: var(--glass);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-md);
  transition: border-color var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-fast) var(--ease-out);
}

.field textarea { resize: vertical; min-height: 140px; }

.field input::placeholder,
.field textarea::placeholder { color: var(--text-lo); }

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

/* ---------------- Marquee ---------------- */
.marquee {
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}

.marquee__track {
  display: flex;
  gap: var(--sp-7);
  width: max-content;
  padding-block: var(--sp-4);
  animation: marquee 32s linear infinite;
}

@keyframes marquee {
  to { transform: translateX(-50%); }
}

.marquee__item {
  font-family: var(--font-display);
  font-size: var(--fs-small);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-lo);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
}

.marquee__item::after {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

@media (prefers-reduced-motion: reduce) {
  .marquee__track { animation: none; }
}