/* ================= Diamond State Chem Co ================= */
:root {
  --navy: #131a75;
  --navy-deep: #0c1152;
  --navy-ink: #0a0e40;
  --red: #c4302e;
  --red-hover: #a82624;
  --cream: #f7f3ec;
  --cream-2: #fffdf8;
  --paper: #efe9de;
  --text: #1d2036;
  --text-muted: #5b5e75;
  --line: #ddd5c6;

  --font-display: 'Roboto Slab', 'Rockwell', serif;
  --font-body: 'Work Sans', 'Helvetica Neue', sans-serif;

  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);
  --text-hero: clamp(2.4rem, 0.9rem + 4.2vw, 4.9rem);

  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem; --space-4: 1rem;
  --space-5: 1.25rem; --space-6: 1.5rem; --space-8: 2rem; --space-10: 2.5rem;
  --space-12: 3rem; --space-16: 4rem; --space-20: 5rem; --space-24: 6rem; --space-32: 8rem;

  --radius-sm: 0.375rem; --radius-md: 0.5rem; --radius-lg: 0.75rem; --radius-xl: 1rem; --radius-full: 9999px;
  --transition: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-md: 0 4px 14px rgba(19, 26, 117, 0.09);
  --shadow-lg: 0 16px 40px rgba(19, 26, 117, 0.16);
  --content: 1160px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility; scroll-behavior: smooth; scroll-padding-top: 90px;
}
body {
  min-height: 100dvh; line-height: 1.6; font-family: var(--font-body);
  font-size: var(--text-base); color: var(--text); background: var(--cream);
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; height: auto; }
input, button, textarea, select { font: inherit; color: inherit; }
h1,h2,h3,h4 { text-wrap: balance; line-height: 1.1; font-family: var(--font-display); color: var(--navy); }
p { text-wrap: pretty; max-width: 68ch; }
a { color: inherit; }
button { cursor: pointer; background: none; border: none; }
[hidden] { display: none !important; }
::selection { background: rgba(196, 48, 46, 0.25); }
:focus-visible { outline: 2px solid var(--red); outline-offset: 3px; border-radius: var(--radius-sm); }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

/* Emphasis system */
h1 em, h2 em { font-style: normal; color: var(--red); }
.kicker {
  font-family: var(--font-body); font-weight: 700; font-size: var(--text-xs);
  letter-spacing: 0.22em; text-transform: uppercase; color: var(--red);
  margin-bottom: var(--space-4);
}
.kicker-light { color: #f0b8b0; }

/* Buttons */
.btn {
  display: inline-block; font-family: var(--font-body); font-weight: 700;
  font-size: var(--text-sm); letter-spacing: 0.06em; text-transform: uppercase;
  text-decoration: none; text-align: center; padding: 0.9em 1.8em;
  border-radius: var(--radius-sm); border: 2px solid transparent;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn:active { transform: translateY(0); }
.btn-red { background: var(--red); color: #fff; }
.btn-red:hover { background: var(--red-hover); }
.btn-navy { background: var(--navy); color: #fff; }
.btn-navy:hover { background: var(--navy-deep); }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,0.6); }
.btn-ghost:hover { background: rgba(255,255,255,0.12); border-color: #fff; box-shadow: none; }
.btn-block { display: block; width: 100%; }

/* ============ Announcement marquee ============ */
.announce { background: var(--navy); color: #fff; overflow: hidden; padding: var(--space-2) 0; }
.announce-track {
  display: flex; gap: var(--space-6); width: max-content;
  animation: marquee 28s linear infinite;
  font-size: var(--text-xs); font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase;
  white-space: nowrap;
}
.announce .star { color: var(--red); }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ============ Header ============ */
.site-header {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-6); padding: var(--space-3) clamp(var(--space-4), 4vw, var(--space-12));
  background: rgba(247, 243, 236, 0.92); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow var(--transition);
}
.site-header.scrolled { box-shadow: var(--shadow-md); }
.brand-lockup { height: 46px; width: auto; }
.main-nav { display: flex; gap: clamp(var(--space-4), 3vw, var(--space-8)); }
.main-nav a {
  text-decoration: none; font-weight: 600; font-size: var(--text-sm);
  letter-spacing: 0.04em; color: var(--navy); position: relative; padding: var(--space-1) 0;
}
.main-nav a::after {
  content: ''; position: absolute; left: 0; bottom: 0; width: 100%; height: 2px;
  background: var(--red); transform: scaleX(0); transform-origin: left;
  transition: transform var(--transition);
}
.main-nav a:hover::after { transform: scaleX(1); }
.header-actions { display: flex; align-items: center; gap: var(--space-4); }
.cart-btn { position: relative; color: var(--navy); padding: var(--space-2); }
.cart-count {
  position: absolute; top: -2px; right: -6px; background: var(--red); color: #fff;
  font-size: 0.7rem; font-weight: 700; min-width: 18px; height: 18px;
  border-radius: var(--radius-full); display: grid; place-items: center; padding: 0 4px;
  transition: transform var(--transition);
}
.cart-count.pop { transform: scale(1.35); }
.menu-btn { display: none; flex-direction: column; gap: 5px; padding: var(--space-2); }
.menu-btn span { width: 22px; height: 2px; background: var(--navy); transition: transform var(--transition), opacity var(--transition); }

/* ============ Hero ============ */
.hero { position: relative; min-height: min(88vh, 820px); display: flex; align-items: center; overflow: hidden; }
.hero-media { position: absolute; inset: 0; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; animation: heroZoom 18s ease-out forwards; }
@keyframes heroZoom { from { transform: scale(1.08); } to { transform: scale(1); } }
.hero-scrim {
  position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(10, 14, 64, 0.88) 0%, rgba(10, 14, 64, 0.62) 42%, rgba(10, 14, 64, 0.12) 75%);
}
.hero-inner {
  position: relative; z-index: 2; max-width: var(--content); width: 100%;
  margin-inline: auto; padding: var(--space-24) clamp(var(--space-4), 4vw, var(--space-12));
}
.hero h1 {
  color: #fff; font-size: var(--text-hero); font-weight: 900; letter-spacing: 0.01em;
  margin-bottom: var(--space-5); white-space: nowrap;
}
@media (max-width: 640px) { .hero h1 { white-space: normal; } }
.hero h1 em { color: #ff6a5e; }
.hero-sub { color: rgba(255,255,255,0.88); font-size: var(--text-lg); max-width: 44ch; margin-bottom: var(--space-8); }
.hero-ctas { display: flex; flex-wrap: wrap; gap: var(--space-4); margin-bottom: var(--space-8); }
.hero-trust { list-style: none; display: flex; flex-wrap: wrap; gap: var(--space-6); }
.hero-trust li { color: rgba(255,255,255,0.85); font-size: var(--text-sm); font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; }

/* ============ Red band ============ */
.band { background: var(--red); color: #fff; overflow: hidden; padding: var(--space-3) 0; }
.band-track {
  display: flex; align-items: center; gap: var(--space-8); width: max-content;
  animation: marquee 22s linear infinite;
  font-family: var(--font-display); font-weight: 800; font-size: var(--text-lg);
  letter-spacing: 0.12em; white-space: nowrap;
}
.band .dia { font-size: 0.7em; color: var(--navy); }

/* ============ Sections shared ============ */
section { padding: clamp(var(--space-16), 8vw, var(--space-24)) clamp(var(--space-4), 4vw, var(--space-12)); }
.shop, .why, .faq { max-width: var(--content); margin-inline: auto; }
section h2 { font-size: var(--text-2xl); font-weight: 900; margin-bottom: var(--space-10); }

/* ============ Shop ============ */
.shop { text-align: left; }
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(var(--space-4), 2.5vw, var(--space-8)); }
.product-card {
  position: relative; display: flex; flex-direction: column; background: var(--cream-2);
  border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--navy); }
.badge {
  position: absolute; top: var(--space-4); left: var(--space-4); z-index: 2;
  font-size: var(--text-xs); font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase;
  padding: var(--space-1) var(--space-3); border-radius: var(--radius-sm); color: #fff;
}
.badge-red { background: var(--red); }
.badge-navy { background: var(--navy); }
.product-img { background: #f6f0e6; aspect-ratio: 1; display: grid; place-items: center; overflow: hidden; }
.product-img img { width: 100%; height: 100%; object-fit: contain; padding: var(--space-6); transition: transform 400ms cubic-bezier(0.16, 1, 0.3, 1); }
.product-img-wide img { object-fit: cover; padding: 0; }
.product-card:hover .product-img img { transform: scale(1.05); }
.product-info { display: flex; flex-direction: column; gap: var(--space-3); padding: var(--space-6); flex: 1; }
.product-info h3 { font-size: var(--text-lg); font-weight: 800; }
.product-desc { font-size: var(--text-sm); color: var(--text-muted); flex: 1; }
.product-row { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); }
.price { font-family: var(--font-display); font-weight: 800; font-size: var(--text-lg); color: var(--navy); }
.price s { color: var(--text-muted); font-size: 0.72em; font-weight: 600; margin-left: var(--space-1); }
.add-btn { flex-shrink: 0; }
.add-btn.added { background: #2e7d32 !important; }

/* ============ Why ============ */
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(var(--space-4), 2.5vw, var(--space-8)); }
.why-card {
  background: var(--cream-2); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: var(--space-8); transition: transform var(--transition), box-shadow var(--transition);
}
.why-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.why-icon {
  width: 60px; height: 60px; display: grid; place-items: center; color: var(--red);
  background: rgba(196, 48, 46, 0.08); border-radius: var(--radius-full); margin-bottom: var(--space-5);
}
.why-card h3 { font-size: var(--text-lg); margin-bottom: var(--space-3); }
.why-card p { font-size: var(--text-sm); color: var(--text-muted); }

/* ============ Ritual ============ */
.ritual { background: var(--navy); position: relative; }
.ritual::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 6px;
  background: repeating-linear-gradient(90deg, var(--red) 0 24px, #fff 24px 28px, var(--navy) 28px 52px, #fff 52px 56px);
  opacity: 0.9;
}
.ritual-inner { max-width: var(--content); margin-inline: auto; }
.ritual h2 { color: #fff; }
.ritual h2 em { color: #ff6a5e; }
.steps { list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(var(--space-4), 2.5vw, var(--space-8)); margin-bottom: var(--space-12); }
.steps li { border-top: 2px solid rgba(255,255,255,0.25); padding-top: var(--space-5); }
.step-num { font-family: var(--font-display); font-weight: 900; font-size: var(--text-xl); color: var(--red); display: block; margin-bottom: var(--space-3); -webkit-text-stroke: 0; }
.steps h3 { color: #fff; font-size: var(--text-lg); margin-bottom: var(--space-2); }
.steps p { color: rgba(255,255,255,0.75); font-size: var(--text-sm); }
.ritual-cta { text-align: left; }

/* ============ Story ============ */
.story { background: var(--paper); }
.story-grid {
  max-width: var(--content); margin-inline: auto; display: grid;
  grid-template-columns: 5fr 7fr; gap: clamp(var(--space-8), 5vw, var(--space-20)); align-items: center;
}
.story-media {
  background: var(--cream-2); border: 1px solid var(--line); border-radius: var(--radius-xl);
  padding: clamp(var(--space-8), 4vw, var(--space-16)); box-shadow: var(--shadow-md);
}
.story-media img { width: 100%; max-width: 340px; margin-inline: auto; }
.story-copy h2 { margin-bottom: var(--space-6); }
.story-copy > p { margin-bottom: var(--space-4); color: var(--text-muted); }
.guarantee {
  display: flex; gap: var(--space-4); align-items: flex-start;
  background: var(--cream-2); border: 2px solid var(--navy); border-radius: var(--radius-lg);
  padding: var(--space-6); margin-top: var(--space-8);
}
.guarantee-dia { color: var(--red); font-size: var(--text-xl); line-height: 1.2; }
.guarantee h3 { font-size: var(--text-base); margin-bottom: var(--space-1); }
.guarantee p { font-size: var(--text-sm); color: var(--text-muted); }

/* ============ FAQ ============ */
.faq-list { display: flex; flex-direction: column; gap: var(--space-3); max-width: 820px; }
.faq-list details {
  background: var(--cream-2); border: 1px solid var(--line); border-radius: var(--radius-md);
  overflow: hidden; transition: border-color var(--transition);
}
.faq-list details[open] { border-color: var(--navy); }
.faq-list summary {
  list-style: none; display: flex; justify-content: space-between; align-items: center; gap: var(--space-4);
  cursor: pointer; font-weight: 600; padding: var(--space-5) var(--space-6); color: var(--navy);
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-plus { position: relative; width: 14px; height: 14px; flex-shrink: 0; }
.faq-plus::before, .faq-plus::after {
  content: ''; position: absolute; background: var(--red); transition: transform var(--transition);
}
.faq-plus::before { left: 0; top: 6px; width: 14px; height: 2px; }
.faq-plus::after { left: 6px; top: 0; width: 2px; height: 14px; }
details[open] .faq-plus::after { transform: scaleY(0); }
.faq-list details p { padding: 0 var(--space-6) var(--space-5); color: var(--text-muted); font-size: var(--text-sm); }

/* ============ Closer ============ */
.closer { background: var(--cream); text-align: center; position: relative; overflow: hidden; }
.closer-chevron { width: min(420px, 70vw); margin: 0 auto var(--space-8); opacity: 0.95; }
.closer-word {
  font-size: clamp(2.5rem, 8vw, 6rem); font-weight: 900; letter-spacing: 0.04em;
  color: var(--navy); margin-bottom: var(--space-3); line-height: 1;
}
.closer-sub { color: var(--red); font-family: var(--font-display); font-weight: 700; font-size: var(--text-lg); margin: 0 auto var(--space-8); }

/* ============ Footer ============ */
.site-footer { background: var(--navy-ink); color: rgba(255,255,255,0.8); padding: var(--space-16) clamp(var(--space-4), 4vw, var(--space-12)) var(--space-8); }
.footer-grid {
  max-width: var(--content); margin-inline: auto; display: grid;
  grid-template-columns: 2fr 1fr 1fr; gap: var(--space-10); margin-bottom: var(--space-12);
}
.footer-mark { background: var(--cream); border-radius: var(--radius-lg); width: 84px; padding: var(--space-3); margin-bottom: var(--space-4); }
.footer-brand p { font-size: var(--text-sm); max-width: 34ch; }
.footer-nav { display: flex; flex-direction: column; gap: var(--space-3); }
.footer-nav a, .footer-contact a { color: rgba(255,255,255,0.8); text-decoration: none; font-size: var(--text-sm); transition: color var(--transition); }
.footer-nav a:hover, .footer-contact a:hover { color: #fff; }
.footer-contact p { font-size: var(--text-sm); margin-bottom: var(--space-2); }
.footer-legal { max-width: var(--content); margin-inline: auto; font-size: var(--text-xs); color: rgba(255,255,255,0.45); border-top: 1px solid rgba(255,255,255,0.12); padding-top: var(--space-6); }

/* ============ Cart drawer ============ */
.cart-overlay, .modal-overlay {
  position: fixed; inset: 0; background: rgba(10, 14, 64, 0.55); z-index: 90;
  opacity: 0; transition: opacity 250ms ease;
}
.cart-overlay.open, .modal-overlay.open { opacity: 1; }
.cart-drawer {
  position: fixed; top: 0; right: 0; bottom: 0; width: min(420px, 100vw); z-index: 100;
  background: var(--cream-2); display: flex; flex-direction: column;
  transform: translateX(100%); transition: transform 320ms cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: -12px 0 40px rgba(10, 14, 64, 0.25);
}
.cart-drawer.open { transform: translateX(0); }
.cart-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: var(--space-5) var(--space-6); border-bottom: 1px solid var(--line);
}
.cart-head h2 { font-size: var(--text-lg); }
.cart-close { font-size: var(--text-base); color: var(--navy); padding: var(--space-2); line-height: 1; }
.ship-bar { padding: var(--space-4) var(--space-6); border-bottom: 1px solid var(--line); background: var(--cream); }
.ship-bar p { font-size: var(--text-xs); font-weight: 600; letter-spacing: 0.04em; margin-bottom: var(--space-2); color: var(--navy); }
.ship-track { height: 8px; background: var(--line); border-radius: var(--radius-full); overflow: hidden; }
.ship-fill { height: 100%; width: 0; background: linear-gradient(90deg, var(--navy), var(--red)); border-radius: var(--radius-full); transition: width 400ms cubic-bezier(0.16, 1, 0.3, 1); }
.cart-items { flex: 1; overflow-y: auto; padding: var(--space-4) var(--space-6); display: flex; flex-direction: column; gap: var(--space-4); }
.cart-empty { text-align: center; color: var(--text-muted); font-size: var(--text-sm); padding: var(--space-12) 0; }
.cart-item { display: grid; grid-template-columns: 64px 1fr auto; gap: var(--space-4); align-items: center; }
.cart-item-img { width: 64px; height: 64px; border-radius: var(--radius-md); border: 1px solid var(--line); background: #f6f0e6; object-fit: contain; padding: 4px; }
.cart-item-name { font-weight: 600; font-size: var(--text-sm); color: var(--navy); }
.cart-item-price { font-size: var(--text-xs); color: var(--text-muted); }
.qty { display: inline-flex; align-items: center; gap: var(--space-2); margin-top: var(--space-1); }
.qty button {
  width: 24px; height: 24px; border: 1px solid var(--line); border-radius: var(--radius-sm);
  display: grid; place-items: center; font-weight: 700; color: var(--navy); font-size: 0.85rem;
  transition: background var(--transition), border-color var(--transition);
}
.qty button:hover { background: var(--paper); border-color: var(--navy); }
.qty span { font-size: var(--text-sm); font-weight: 600; min-width: 18px; text-align: center; }
.cart-item-total { font-family: var(--font-display); font-weight: 800; color: var(--navy); font-size: var(--text-sm); }
.cart-foot { padding: var(--space-5) var(--space-6); border-top: 1px solid var(--line); }
.cart-subtotal { display: flex; justify-content: space-between; font-family: var(--font-display); font-weight: 800; font-size: var(--text-lg); color: var(--navy); margin-bottom: var(--space-4); }
.cart-note { font-size: var(--text-xs); color: var(--text-muted); text-align: center; margin: var(--space-3) auto 0; }

/* ============ Modal ============ */
.modal-overlay { display: grid; place-items: center; padding: var(--space-4); z-index: 110; }
.modal {
  position: relative; background: var(--cream-2); border-radius: var(--radius-xl);
  max-width: 460px; width: 100%; padding: var(--space-10) var(--space-8) var(--space-8);
  text-align: center; box-shadow: var(--shadow-lg);
  transform: translateY(16px); transition: transform 300ms cubic-bezier(0.16, 1, 0.3, 1);
}
.modal-overlay.open .modal { transform: translateY(0); }
.modal-close { position: absolute; top: var(--space-4); right: var(--space-4); }
.modal-dia { color: var(--red); font-size: var(--text-xl); display: block; margin-bottom: var(--space-3); }
.modal h2 { font-size: var(--text-xl); margin-bottom: var(--space-4); }
.modal p { font-size: var(--text-sm); color: var(--text-muted); margin: 0 auto var(--space-4); }
.modal-order { font-weight: 600; color: var(--navy) !important; }

/* ============ Reveal animations ============ */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 600ms ease, transform 600ms cubic-bezier(0.16, 1, 0.3, 1); }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ============ Responsive ============ */
@media (max-width: 900px) {
  .product-grid, .why-grid { grid-template-columns: 1fr 1fr; }
  .product-card-bundle { grid-column: span 2; }
  .steps { grid-template-columns: 1fr 1fr; }
  .story-grid { grid-template-columns: 1fr; }
  .story-media { max-width: 420px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .main-nav {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; gap: 0; background: var(--cream-2);
    border-bottom: 1px solid var(--line); box-shadow: var(--shadow-md);
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: var(--space-4) var(--space-6); border-top: 1px solid var(--line); }
  .main-nav a::after { display: none; }
  .menu-btn { display: flex; }
  .menu-btn.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .menu-btn.open span:nth-child(2) { opacity: 0; }
  .menu-btn.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .brand-lockup { height: 38px; }
  .product-grid, .why-grid { grid-template-columns: 1fr; }
  .product-card-bundle { grid-column: auto; }
  .steps { grid-template-columns: 1fr; }
  .hero { min-height: 78vh; }
  .hero-trust { flex-direction: column; gap: var(--space-2); }
  .footer-grid { grid-template-columns: 1fr; }
}