/* =========================================================
   babapic — Reusable Components
   Shared across homepage and every future /tool-name/ subpage.
   ========================================================= */

/* ---------------------------------------------------------
   Buttons
   --------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-5);
  font-size: var(--fs-body);
  font-weight: var(--fw-medium);
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease),
    border-color var(--dur-fast) var(--ease),
    box-shadow var(--dur-fast) var(--ease),
    transform var(--dur-fast) var(--ease);
  white-space: nowrap;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: var(--shadow-sm);
  letter-spacing: 0.01em;
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  box-shadow: var(--glow-accent);
}

.btn-primary:active {
  background: var(--color-accent-active);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text-heading);
  border-color: var(--color-border-strong);
}

.btn-secondary:hover {
  background: var(--color-surface-2);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border-color: transparent;
}

.btn-ghost:hover {
  background: var(--color-surface-2);
  color: var(--color-text-heading);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--fs-small);
}

.btn-block {
  width: 100%;
}

/* ---------------------------------------------------------
   Top navigation
   --------------------------------------------------------- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  height: var(--nav-height);
  display: flex;
  align-items: center;
  background: rgba(233, 242, 245, 0.86);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.site-nav__inner {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  width: 100%;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: var(--fw-bold);
  font-size: 1.25rem;
  color: var(--color-text-heading);
  flex-shrink: 0;
}

.brand__mark {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-active));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: var(--fw-bold);
  font-size: 0.95rem;
}

.brand__pic {
  color: var(--color-accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex: 1;
}

.nav-link {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  font-size: var(--fs-small);
  font-weight: var(--fw-medium);
  color: var(--color-text);
  transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}

.nav-link:hover {
  background: var(--color-surface-2);
  color: var(--color-text-heading);
}

.nav-link.is-active {
  color: var(--color-accent);
}

/* "More tools" mega-menu */
.nav-more {
  position: relative;
}

.nav-more__trigger {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  background: transparent;
  border: none;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  font-size: var(--fs-small);
  font-weight: var(--fw-medium);
  color: var(--color-text);
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}

.nav-more__trigger:hover,
.nav-more.is-open .nav-more__trigger {
  background: var(--color-surface-2);
  color: var(--color-text-heading);
}

.nav-more__chevron {
  width: 14px;
  height: 14px;
  transition: transform var(--dur-fast) var(--ease);
}

.nav-more.is-open .nav-more__chevron {
  transform: rotate(180deg);
}

.nav-more__panel {
  position: absolute;
  top: calc(100% + var(--space-3));
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  width: min(560px, 90vw);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-4);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-1);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--dur-base) var(--ease), transform var(--dur-base) var(--ease),
    visibility var(--dur-base);
}

.nav-more.is-open .nav-more__panel {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.nav-more__item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  color: var(--color-text);
}

.nav-more__item:hover {
  background: var(--color-surface-2);
  color: var(--color-text-heading);
}

.nav-more__item-icon {
  width: 18px;
  height: 18px;
  color: var(--color-accent);
  flex-shrink: 0;
}

.nav-more__item-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-more__item-name {
  font-size: var(--fs-small);
  font-weight: var(--fw-medium);
  color: inherit;
}

.nav-more__item-desc {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--color-text-heading);
}

/* ---------------------------------------------------------
   Tool card
   --------------------------------------------------------- */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}

.tool-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 3px solid transparent;
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  transition: border-color var(--dur-base) var(--ease), box-shadow var(--dur-base) var(--ease),
    background var(--dur-base) var(--ease);
}

.tool-card:hover,
.tool-card:focus-visible {
  border-color: var(--color-border-strong);
  border-left-color: var(--color-accent);
  box-shadow: var(--shadow-md);
  background: var(--color-surface-2);
}

.tool-card__icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--color-accent-muted);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
}

.tool-card__icon svg {
  width: 22px;
  height: 22px;
}

.tool-card__name {
  font-size: var(--fs-body-lg);
  font-weight: var(--fw-semibold);
  color: var(--color-text-heading);
}

.tool-card__desc {
  font-size: var(--fs-small);
  color: var(--color-text-muted);
  line-height: var(--lh-body);
}

.tool-card__badge {
  align-self: flex-start;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-accent);
  background: var(--color-accent-muted);
  border-radius: var(--radius-full);
  padding: 2px var(--space-2);
}

/* ---------------------------------------------------------
   Section & layout primitives (generic — used on homepage and
   every tool subpage, not homepage-specific despite living
   alongside homepage-only styles previously)
   --------------------------------------------------------- */
.section {
  padding-block: var(--space-8);
}

.section--tight {
  padding-block: var(--space-7);
}

.section__header {
  text-align: center;
  max-width: 60ch;
  margin: 0 auto var(--space-6);
}

.section__eyebrow {
  display: block;
  color: var(--color-accent);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-2);
}

.section__subtitle {
  margin-top: var(--space-3);
  color: var(--color-text-muted);
  font-size: var(--fs-body-lg);
}

.ad-row {
  display: flex;
  justify-content: center;
  padding-block: var(--space-6);
}

/* ---------------------------------------------------------
   Dropzone (hero element)
   --------------------------------------------------------- */
.dropzone {
  --dz-border: var(--color-border-strong);
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  text-align: center;
  padding: var(--space-8) var(--space-5);
  border: 2px dashed var(--dz-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  cursor: pointer;
  transition: border-color var(--dur-base) var(--ease), box-shadow var(--dur-base) var(--ease),
    background var(--dur-base) var(--ease);
}

.dropzone:hover,
.dropzone:focus-visible {
  --dz-border: var(--color-accent);
  background: var(--color-surface-2);
}

.dropzone.is-dragover {
  --dz-border: var(--color-accent);
  background: var(--color-accent-muted);
  box-shadow: var(--glow-accent-strong);
}

.dropzone__icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  background: var(--color-accent-muted);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--dur-base) var(--ease);
}

.dropzone:hover .dropzone__icon {
  transform: translateY(-4px);
}

.dropzone__icon svg {
  width: 28px;
  height: 28px;
}

.dropzone__title {
  font-size: var(--fs-body-lg);
  font-weight: var(--fw-semibold);
  color: var(--color-text-heading);
}

.dropzone__hint {
  font-size: var(--fs-small);
  color: var(--color-text-muted);
}

.dropzone__input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.dropzone__divider {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-faint);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ---------------------------------------------------------
   Ambient background motion — shared by .hero (home.css) and
   .tool-hero (tool-page.css). CSS transform/opacity only, so it's
   GPU-cheap; base.css's global prefers-reduced-motion rule already
   freezes these (animation-duration → 0.01ms), so no extra media
   query is needed here.
   --------------------------------------------------------- */
@keyframes drift-a {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(2.5%, 2%) scale(1.08); }
}

@keyframes drift-b {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-2%, -1.5%) scale(1.05); }
}

/* ---------------------------------------------------------
   FAQ accordion (reused on every tool subpage)
   --------------------------------------------------------- */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-item__question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  background: transparent;
  border: none;
  text-align: left;
  font-size: var(--fs-body);
  font-weight: var(--fw-medium);
  color: var(--color-text-heading);
  cursor: pointer;
}

.faq-item__question:hover {
  background: var(--color-surface-2);
}

.faq-item__icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--color-accent);
  transition: transform var(--dur-base) var(--ease);
}

.faq-item.is-open .faq-item__icon {
  transform: rotate(45deg);
}

.faq-item__answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--dur-slow) var(--ease);
}

.faq-item.is-open .faq-item__answer {
  grid-template-rows: 1fr;
}

.faq-item__answer-inner {
  overflow: hidden;
}

.faq-item__answer p {
  padding: 0 var(--space-5) var(--space-4);
  color: var(--color-text-muted);
  font-size: var(--fs-small);
  line-height: var(--lh-body);
}

/* ---------------------------------------------------------
   Ad slots — clearly labeled, restrained
   --------------------------------------------------------- */
.ad-slot {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  background: var(--color-ad-bg);
  border: 1px dashed var(--color-ad-border);
  border-radius: var(--radius-md);
  color: var(--color-ad-label);
  margin-inline: auto;
}

.ad-slot__label {
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.ad-slot--leaderboard {
  width: 100%;
  max-width: 728px;
  min-height: 90px;
}

.ad-slot--in-content {
  width: 100%;
  max-width: 336px;
  min-height: 120px;
}

.ad-slot--skyscraper {
  width: 160px;
  height: 600px;
}

/* ---------------------------------------------------------
   Skyscraper rails — desktop-only sticky ad columns flanking
   the content column. Hidden by default (and on every viewport
   below the breakpoint) so there is zero layout impact when
   absent — the rails take no space in normal flow until the
   media query turns them into flex columns, so nothing shifts
   when they appear/disappear.

   Breakpoint math: content column is --container-max (1200px).
   A 160px skyscraper needs at least ~24px of breathing room
   before the content column on top of its own width, so the
   minimum viewport that fits both rails without crowding is
   1200 + 2 * (160 + 24) = 1568px — rounded up to 1600px, which
   also comfortably covers the 1920px breakpoint (200px of extra
   gutter per side at that width). Below 1600px (including at
   1440px, where only ~120px of margin exists per side) the rails
   stay hidden entirely and the layout is unchanged.
   --------------------------------------------------------- */
.skyscraper-rail {
  display: none;
}

@media (min-width: 1600px) {
  .page-shell {
    display: flex;
  }

  .page-shell > main {
    flex: 1 1 auto;
    min-width: 0;
  }

  .skyscraper-rail {
    display: block;
    flex: 0 0 160px;
    width: 160px;
  }

  .skyscraper-rail .ad-slot {
    position: sticky;
    top: calc(var(--nav-height) + var(--space-6));
  }
}

/* ---------------------------------------------------------
   Footer
   --------------------------------------------------------- */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-9);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: var(--space-6);
  padding-block: var(--space-8);
}

.footer-brand p {
  color: var(--color-text-muted);
  font-size: var(--fs-small);
  margin-top: var(--space-3);
  max-width: 32ch;
}

.footer-col__title {
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-faint);
  margin-bottom: var(--space-3);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

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

.footer-col a:hover {
  color: var(--color-accent);
}

.footer-social {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.footer-social a {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  transition: border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}

.footer-social a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.footer-social svg {
  width: 16px;
  height: 16px;
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.footer-bottom small {
  color: var(--color-text-faint);
}

.footer-bottom-links {
  display: flex;
  gap: var(--space-4);
}

.footer-bottom-links a {
  font-size: var(--fs-xs);
  color: var(--color-text-faint);
}

.footer-bottom-links a:hover {
  color: var(--color-accent);
}

/* ---------------------------------------------------------
   Responsive
   --------------------------------------------------------- */
@media (max-width: 960px) {
  .tool-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 780px) {
  .site-nav__inner {
    gap: var(--space-3);
  }

  .nav-actions .btn-ghost {
    display: none;
  }

  .nav-links {
    /* NOTE: .site-nav has backdrop-filter, which makes it the containing
       block for fixed descendants — so `inset`/`bottom` here would resolve
       against the 68px nav bar, not the viewport. Use vh-based height
       instead, since vh units bypass the containing block. */
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    height: calc(100vh - var(--nav-height));
    background: var(--color-bg);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-5);
    gap: var(--space-2);
    transform: translateX(100%);
    transition: transform var(--dur-slow) var(--ease);
    overflow-y: auto;
  }

  .nav-links.is-open {
    transform: translateX(0);
  }

  .nav-more__panel {
    position: static;
    transform: none;
    width: 100%;
    grid-template-columns: 1fr;
    box-shadow: none;
    margin-top: var(--space-2);
    display: none;
  }

  .nav-more.is-open .nav-more__panel {
    transform: none;
    display: grid;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .nav-toggle {
    display: inline-flex;
  }
}

@media (max-width: 640px) {
  .tool-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-5);
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}