/* ==========================================================================
   Zim Zam Labs — Page CSS: SHOP
   Components: trust bar, ingredients-deep grid, usage steps, two-bag system,
   FAQ accordion, generic section-header utility
   Loaded only on shop.html
   ========================================================================== */

/* ==========================================================================
   GENERIC SECTION HEADER (used by ingredients-deep, usage, faq sections)
   ========================================================================== */
.section-header {
  text-align: center;
  max-width: 720px;
  margin-inline: auto;
  margin-bottom: var(--space-2xl);
}
.section-header__label {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold-600);
  margin-bottom: var(--space-md);
}
.section-header__title {
  font-family: var(--font-display);
  font-size: var(--text-display);
  line-height: 0.98;
  letter-spacing: -0.04em;
  color: var(--ink-900);
  margin-bottom: var(--space-md);
  font-variation-settings: "opsz" 144, "SOFT" 50, "WONK" 1;
  text-wrap: balance;
}
.section-header__title em {
  font-family: var(--font-italic);
  font-style: italic;
  color: var(--gold-600);
}
.section-header__lead {
  font-size: var(--text-body-lg);
  line-height: 1.55;
  color: var(--text-on-cream-muted);
  max-width: 56ch;
  margin-inline: auto;
}

/* ==========================================================================
   TRUST BAR — six trust signals just below the hero
   Sits on the dark surface as a transition strip
   ========================================================================== */
.trust {
  position: relative;
  background: var(--ink-900);
  color: var(--text-on-dark);
  padding-block: var(--space-2xl);
  border-block: 1px solid var(--ink-line);
}
.trust .wrap {
  max-width: var(--max-page);
}
.trust__grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--space-md);
}
@media (max-width: 1100px) {
  .trust__grid { grid-template-columns: repeat(3, 1fr); gap: var(--space-lg); }
}
@media (max-width: 640px) {
  .trust__grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-md); }
}

.trust__item {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: var(--space-md);
  border: 1px solid var(--ink-line);
  background: linear-gradient(170deg, rgba(26, 33, 51, 0.4), rgba(11, 15, 24, 0.4));
  position: relative;
  transition: all var(--t-fast) var(--ease-out);
}
.trust__item:hover {
  border-color: var(--gold-500);
  background: linear-gradient(170deg, rgba(26, 33, 51, 0.7), rgba(11, 15, 24, 0.7));
  transform: translateY(-2px);
}
.trust__icon {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border: 1px solid var(--gold-500);
  color: var(--gold-400);
  margin-bottom: 0.25rem;
}
.trust__title {
  font-family: var(--font-display);
  font-size: var(--text-body-lg);
  line-height: 1.1;
  color: var(--cream-50);
  font-variation-settings: "opsz" 48, "SOFT" 30;
  letter-spacing: -0.01em;
}
.trust__desc {
  font-family: var(--font-body);
  font-size: var(--text-body-sm);
  line-height: 1.45;
  color: var(--text-on-dark-muted);
}

/* ==========================================================================
   INGREDIENTS DEEP-DIVE — six cards with chemical formulas and descriptions
   Cream surface
   ========================================================================== */
.ingredients-deep {
  background: var(--cream-50);
  position: relative;
  overflow: hidden;
}
.ing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--cream-400);
  border-left: 1px solid var(--cream-400);
}
@media (max-width: 920px) {
  .ing-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 580px) {
  .ing-grid { grid-template-columns: 1fr; }
}

.ing-card {
  padding: var(--space-xl);
  border-right: 1px solid var(--cream-400);
  border-bottom: 1px solid var(--cream-400);
  background: var(--cream-50);
  transition: background var(--t-fast) var(--ease-out);
  position: relative;
}
.ing-card:hover { background: var(--cream-100); }

.ing-card__num {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  letter-spacing: 0.18em;
  color: var(--gold-600);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: 0.625rem;
}
.ing-card__num::before {
  content: "";
  width: 1.25rem;
  height: 1px;
  background: var(--gold-600);
}
.ing-card__name {
  font-family: var(--font-display);
  font-size: var(--text-h3);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ink-900);
  font-variation-settings: "opsz" 144, "SOFT" 30, "WONK" 1;
  margin-bottom: var(--space-sm);
}
.ing-card__formula {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  color: var(--gold-700);
  letter-spacing: 0.04em;
  padding: 0.25rem 0.5rem;
  background: rgba(184, 135, 68, 0.08);
  border: 1px solid rgba(184, 135, 68, 0.3);
  margin-bottom: var(--space-md);
}
.ing-card__formula sub { font-size: 0.78em; vertical-align: sub; }
.ing-card__formula sup { font-size: 0.78em; vertical-align: super; }
.ing-card__desc {
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: var(--lh-body);
  color: var(--text-on-cream-muted);
}

/* ==========================================================================
   USAGE — How to use, three steps on dark surface
   ========================================================================== */
.usage {
  background: var(--ink-900);
  color: var(--text-on-dark);
  position: relative;
  overflow: hidden;
}
.usage::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 900px 700px at 80% 30%, rgba(78, 197, 232, 0.12), transparent 60%),
    radial-gradient(ellipse 700px 600px at 15% 80%, rgba(233, 196, 106, 0.08), transparent 55%);
  pointer-events: none;
}

.usage__header {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 720px;
  margin-inline: auto;
  margin-bottom: var(--space-2xl);
}
.usage__label {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold-400);
  margin-bottom: var(--space-md);
}
.usage__title {
  font-family: var(--font-display);
  font-size: var(--text-display);
  line-height: 0.98;
  letter-spacing: -0.04em;
  color: var(--cream-50);
  font-variation-settings: "opsz" 144, "SOFT" 40, "WONK" 1;
  text-wrap: balance;
  margin-bottom: var(--space-md);
}
.usage__title em {
  font-family: var(--font-italic);
  font-style: italic;
  color: var(--gold-400);
}
.usage__lead {
  font-size: var(--text-body-lg);
  line-height: 1.55;
  color: var(--text-on-dark-muted);
  max-width: 56ch;
  margin-inline: auto;
}

.usage__steps {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--ink-line);
}
@media (max-width: 860px) {
  .usage__steps { grid-template-columns: 1fr; }
}

.usage-step {
  padding: var(--space-2xl) var(--space-xl);
  border-right: 1px solid var(--ink-line);
  background: linear-gradient(170deg, rgba(26, 33, 51, 0.4), rgba(11, 15, 24, 0.4));
  transition: background var(--t-fast) var(--ease-out);
}
.usage-step:last-child { border-right: none; }
@media (max-width: 860px) {
  .usage-step { border-right: none; border-bottom: 1px solid var(--ink-line); }
  .usage-step:last-child { border-bottom: none; }
}
.usage-step:hover { background: linear-gradient(170deg, rgba(26, 33, 51, 0.7), rgba(11, 15, 24, 0.7)); }

.usage-step__num {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(3.5rem, 2.5rem + 4vw, 5.5rem);
  font-variation-settings: "opsz" 144, "SOFT" 40, "WONK" 1;
  line-height: 0.85;
  letter-spacing: -0.04em;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--gold-500);
  margin-bottom: var(--space-md);
}
.usage-step__title {
  font-family: var(--font-display);
  font-size: var(--text-h3);
  color: var(--cream-50);
  margin-bottom: var(--space-sm);
  font-variation-settings: "opsz" 48, "SOFT" 30;
  letter-spacing: -0.02em;
}
.usage-step__desc {
  font-size: var(--text-body);
  line-height: 1.6;
  color: var(--text-on-dark-muted);
  margin-bottom: var(--space-md);
}
.usage-step__data {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-micro);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-400);
  padding-top: var(--space-sm);
  border-top: 1px solid var(--ink-line);
}

/* ==========================================================================
   TWO-BAG SYSTEM — cream split section
   ========================================================================== */
.bagsystem {
  background: var(--cream-100);
  position: relative;
}
.bagsystem__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}
@media (max-width: 920px) {
  .bagsystem__grid { grid-template-columns: 1fr; gap: var(--space-xl); }
}

.bagsystem__image {
  position: relative;
  aspect-ratio: 4/5;
  background: var(--cream-200);
  border: 1px solid var(--cream-400);
  overflow: hidden;
  max-height: 600px;
}
.bagsystem__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  mix-blend-mode: multiply;
  filter: contrast(1.04);
}
.bagsystem__caption {
  position: absolute;
  bottom: var(--space-md);
  left: var(--space-md);
  right: var(--space-md);
  padding: 0.625rem 0.875rem;
  background: rgba(247, 241, 228, 0.94);
  backdrop-filter: blur(6px);
  border: 1px solid var(--cream-400);
  display: flex;
  gap: var(--space-sm);
  align-items: baseline;
}
.bagsystem__caption-num {
  font-family: var(--font-mono);
  font-size: var(--text-micro);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold-700);
  white-space: nowrap;
}
.bagsystem__caption-text {
  font-family: var(--font-italic);
  font-style: italic;
  font-size: var(--text-body-sm);
  color: var(--text-on-cream-muted);
  line-height: 1.4;
}

.bagsystem__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}
.bagsystem__label {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold-700);
}
.bagsystem__title {
  font-family: var(--font-display);
  font-size: var(--text-h1);
  line-height: 1;
  letter-spacing: -0.035em;
  color: var(--ink-900);
  font-variation-settings: "opsz" 144, "SOFT" 40, "WONK" 1;
  margin-bottom: var(--space-sm);
  text-wrap: balance;
}
.bagsystem__title em {
  font-family: var(--font-italic);
  font-style: italic;
  color: var(--gold-600);
}
.bagsystem__content p {
  font-size: var(--text-body-lg);
  line-height: var(--lh-body);
  color: var(--text-on-cream-muted);
  max-width: 56ch;
}
.bagsystem__aside {
  margin-top: clamp(1rem, 0.5rem + 1vw, 1.75rem);
  padding: clamp(0.75rem, 0.5rem + 0.75vw, 1.1rem) clamp(0.85rem, 0.5rem + 1vw, 1.25rem);
  border-left: 2px solid var(--gold-400);
  background: rgba(224, 183, 96, 0.06);
  font-size: clamp(0.8125rem, 0.75rem + 0.25vw, 0.9375rem);
  line-height: 1.55;
  color: var(--text-on-cream-muted);
  max-width: 56ch;
}
.bagsystem__aside em {
  font-family: var(--font-italic);
  font-style: italic;
  color: var(--ink-900);
}
.bagsystem__content p strong {
  font-family: var(--font-display);
  font-weight: 500;
  color: var(--ink-900);
  font-variation-settings: "opsz" 48, "SOFT" 20;
}

/* ==========================================================================
   TESTIMONIALS — reuses .proof but adjusts spacing for the standalone use
   ========================================================================== */
.testimonials { padding-block: var(--space-2xl); }

/* ==========================================================================
   FAQ ACCORDION (sand cream)
   ========================================================================== */
.faq-section {
  background: var(--cream-200);
  position: relative;
}
.faq-section__header {
  text-align: center;
  max-width: 720px;
  margin-inline: auto;
  margin-bottom: var(--space-2xl);
}
.faq-section__label {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold-700);
  margin-bottom: var(--space-md);
}
.faq-section__title {
  font-family: var(--font-display);
  font-size: var(--text-display);
  line-height: 0.98;
  letter-spacing: -0.04em;
  color: var(--ink-900);
  font-variation-settings: "opsz" 144, "SOFT" 50, "WONK" 1;
  text-wrap: balance;
}
.faq-section__title em {
  font-family: var(--font-italic);
  font-style: italic;
  color: var(--gold-600);
}

.faq-list {
  max-width: 820px;
  margin-inline: auto;
  border-top: 1px solid var(--text-on-cream);
}

.faq-item {
  border-bottom: 1px solid var(--cream-400);
}
.faq-item__q {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-md);
  padding: var(--space-lg) 0;
  cursor: pointer;
  font-family: var(--font-display);
  font-size: var(--text-h4);
  line-height: 1.3;
  color: var(--ink-900);
  font-variation-settings: "opsz" 48, "SOFT" 30;
  letter-spacing: -0.015em;
  list-style: none;
  transition: color var(--t-fast) var(--ease-out);
}
.faq-item__q::-webkit-details-marker { display: none; }
.faq-item__q::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.5rem;
  color: var(--gold-700);
  font-weight: 300;
  transition: transform var(--t-fast) var(--ease-out);
  flex-shrink: 0;
}
.faq-item[open] .faq-item__q::after {
  content: "−";
  color: var(--gold-600);
}
.faq-item__q:hover { color: var(--gold-700); }
.faq-item__a {
  padding: 0 0 var(--space-lg) 0;
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: var(--lh-body);
  color: var(--text-on-cream-muted);
  max-width: 64ch;
}
.faq-item__a em {
  font-family: var(--font-italic);
  font-style: italic;
  color: var(--text-on-cream);
}

/* ==========================================================================
   MOBILE OPTIMIZATION for shop-only components
   ========================================================================== */
@media (max-width: 640px) {
  .section-header__title { font-size: clamp(2rem, 1.5rem + 4vw, 2.75rem); }
  .section-header__lead { font-size: 1rem; }

  /* Trust bar */
  .trust { padding-block: var(--space-xl); }
  .trust__item { padding: var(--space-sm) var(--space-md); }
  .trust__icon { width: 30px; height: 30px; }
  .trust__icon svg { width: 18px; height: 18px; }
  .trust__title { font-size: 1rem; }
  .trust__desc { font-size: 0.8125rem; line-height: 1.4; }

  /* Ingredients deep */
  .ing-card { padding: var(--space-lg); }
  .ing-card__num { font-size: 0.625rem; margin-bottom: var(--space-sm); }
  .ing-card__name { font-size: 1.375rem; }
  .ing-card__formula { font-size: 0.6875rem; padding: 0.2rem 0.4rem; }
  .ing-card__desc { font-size: 0.9375rem; }

  /* Usage steps */
  .usage__title { font-size: clamp(2rem, 1.5rem + 4vw, 2.75rem); }
  .usage__lead { font-size: 1rem; }
  .usage-step { padding: var(--space-lg); }
  .usage-step__num { font-size: 3rem; margin-bottom: var(--space-sm); }
  .usage-step__title { font-size: 1.375rem; }
  .usage-step__desc { font-size: 0.9375rem; }
  .usage-step__data { font-size: 0.625rem; }

  /* Two-bag system */
  .bagsystem__title { font-size: clamp(1.875rem, 1.5rem + 3vw, 2.5rem); }
  .bagsystem__content p { font-size: 1rem; }
  .bagsystem__label { font-size: 0.625rem; }
  .bagsystem__caption { padding: 0.5rem 0.625rem; flex-direction: column; gap: 0.25rem; }
  .bagsystem__caption-num { font-size: 0.5625rem; }
  .bagsystem__caption-text { font-size: 0.8125rem; }

  /* FAQ */
  .faq-section__title { font-size: clamp(2rem, 1.5rem + 4vw, 2.75rem); }
  .faq-section__label { font-size: 0.625rem; }
  .faq-item__q { font-size: 1.0625rem; padding: var(--space-md) 0; }
  .faq-item__q::after { font-size: 1.25rem; }
  .faq-item__a { font-size: 0.9375rem; padding-bottom: var(--space-md); }
}