/* ==========================================================================
   Rattler Group — Site Stylesheet
   Grayscale, disciplined, minimal. See /brand for full guidelines.
   ========================================================================== */

:root {
  --black: #0a0a0a;
  --gray-950: #121212;
  --gray-900: #1a1a1a;
  --gray-800: #262626;
  --gray-700: #3a3a3a;
  --gray-600: #545454;
  --gray-500: #767676;
  --gray-400: #9c9c9c;
  --gray-300: #c2c2c2;
  --gray-200: #dcdcdc;
  --gray-100: #ededed;
  --white: #f7f7f5;

  --font-display: "Barlow Condensed", "Arial Narrow", sans-serif;
  --font-body: "Inter", "Helvetica Neue", Arial, sans-serif;

  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --dur: 0.35s;
  --container: 1180px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--black);
  color: var(--gray-200);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a {
  color: inherit;
  text-decoration: none;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--white);
  margin: 0 0 0.5em;
  font-weight: 600;
}

h1 { font-size: clamp(2.4rem, 6vw, 4.6rem); letter-spacing: 0.02em; }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.4rem); }
h3 { font-size: 1.15rem; }

p { color: var(--gray-400); margin: 0 0 1em; }

.eyebrow {
  display: inline-block;
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.28em;
  font-size: 0.72rem;
  color: var(--gray-500);
  margin-bottom: 0.9em;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.85em 1.8em;
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid var(--gray-200);
  background: transparent;
  color: var(--white);
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.btn:hover { background: var(--white); color: var(--black); transform: translateY(-2px); }
.btn-solid { background: var(--white); color: var(--black); }
.btn-solid:hover { background: var(--gray-300); color: var(--black); }
.btn-ghost { border-color: var(--gray-700); color: var(--gray-300); }
.btn-ghost:hover { border-color: var(--white); background: transparent; color: var(--white); }

/* ---------- Header / Nav ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-800);
  transition: border-color var(--dur) var(--ease);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.brand-mark {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 1.05rem;
  color: var(--white);
}
.brand-mark img { height: 34px; width: auto; }

.main-nav { display: flex; align-items: center; gap: 2.4rem; }
.main-nav a {
  position: relative;
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.82rem;
  color: var(--gray-400);
  padding: 6px 0;
  transition: color var(--dur) var(--ease);
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: var(--white);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--dur) var(--ease);
}
.main-nav a:hover, .main-nav a.active { color: var(--white); }
.main-nav a:hover::after, .main-nav a.active::after { transform: scaleX(1); transform-origin: left; }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--gray-700);
  color: var(--white);
  width: 42px; height: 42px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 76px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: grayscale(1) contrast(1.1) brightness(0.55);
  transform: scale(1.05);
}
.hero-bg::after { content: none; }
.hero-scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10,10,10,0.55) 0%, rgba(10,10,10,0.75) 60%, var(--black) 100%);
}
.hero-content { position: relative; z-index: 2; max-width: 720px; }
.hero-content p { font-size: 1.1rem; color: var(--gray-300); max-width: 560px; }
.hero-actions { display: flex; gap: 1rem; margin-top: 2rem; flex-wrap: wrap; }

/* ---------- Sections ---------- */
section { padding: 6.5rem 0; }
.section-head { max-width: 640px; margin-bottom: 3rem; }
.section-split { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center; }

.border-top { border-top: 1px solid var(--gray-800); }

/* ---------- Pillars / Cards ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5px; background: var(--gray-800); }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5px; background: var(--gray-800); }

.card {
  background: var(--gray-950);
  padding: 2.6rem 2.2rem;
  transition: background var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.card:hover { background: var(--gray-900); transform: translateY(-4px); }
.card .num {
  font-family: var(--font-display);
  color: var(--gray-700);
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  margin-bottom: 1.2rem;
  display: block;
}
.card h3 { margin-bottom: 0.6em; }
.card p { margin-bottom: 0; font-size: 0.95rem; }

/* ---------- Product cards ---------- */
.product-card {
  background: var(--gray-950);
  border: 1px solid var(--gray-800);
  display: flex;
  flex-direction: column;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.product-card:hover { border-color: var(--gray-500); transform: translateY(-4px); }
.product-media {
  aspect-ratio: 4 / 3;
  background: var(--gray-900);
  overflow: hidden;
  position: relative;
}
.product-media img {
  width: 100%; height: 100%; object-fit: cover;
  filter: grayscale(1) contrast(1.05);
  transition: transform 0.6s var(--ease), opacity 0.4s var(--ease);
}
.product-card:hover .product-media img { transform: scale(1.06); }
.product-media-front, .product-media-alt {
  position: absolute; top: 0; left: 0;
}
.product-media-alt { opacity: 0; }
.product-card:hover .product-media-front { opacity: 0; }
.product-card:hover .product-media-alt { opacity: 1; }
.product-tag {
  position: absolute; top: 12px; left: 12px;
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-size: 0.68rem;
  background: var(--black);
  color: var(--white);
  padding: 4px 10px;
  border: 1px solid var(--gray-700);
}
.product-body { padding: 1.6rem 1.6rem 1.9rem; display: flex; flex-direction: column; flex: 1; }
.product-body h3 { margin-bottom: 0.4em; }
.product-details {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height var(--dur) var(--ease), opacity var(--dur) var(--ease), margin var(--dur) var(--ease);
}
.product-card.is-expanded .product-details {
  max-height: 240px;
  opacity: 1;
  margin-bottom: 1rem;
}
.product-details ul {
  margin: 0;
  padding-left: 1.2em;
  color: var(--gray-400);
  font-size: 0.9rem;
}
.product-details li { margin-bottom: 0.4em; }
.product-meta {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: auto; padding-top: 1rem; border-top: 1px solid var(--gray-800);
  gap: 0.8rem;
}
.product-actions { display: flex; gap: 0.6rem; flex-wrap: wrap; }
.product-actions .btn { padding: 0.7em 1.2em; font-size: 0.78rem; }
.btn-details[aria-expanded="true"] { background: var(--white); color: var(--black); }
.price { font-family: var(--font-display); color: var(--white); font-size: 1.15rem; letter-spacing: 0.03em; }
.grid-products { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.6rem; }

/* ---------- Cart ---------- */
.cart-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  background: transparent;
  border: 1px solid var(--gray-700);
  color: var(--white);
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.8rem;
  padding: 0.55em 1.1em;
  cursor: pointer;
  margin-left: 1rem;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.cart-toggle:hover { border-color: var(--gray-400); }
.cart-count {
  background: var(--white);
  color: var(--black);
  border-radius: 50%;
  min-width: 1.4em;
  height: 1.4em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 700;
}
.cart-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.6);
  opacity: 0; visibility: hidden;
  transition: opacity var(--dur) var(--ease), visibility var(--dur) var(--ease);
  z-index: 90;
}
.cart-overlay.is-open { opacity: 1; visibility: visible; }
.cart-drawer {
  position: fixed; top: 0; right: 0; bottom: 0;
  width: min(380px, 90vw);
  background: var(--gray-950);
  border-left: 1px solid var(--gray-800);
  display: flex; flex-direction: column;
  transform: translateX(100%);
  transition: transform var(--dur) var(--ease);
  z-index: 91;
}
.cart-drawer.is-open { transform: translateX(0); }
.cart-drawer-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.4rem 1.6rem;
  border-bottom: 1px solid var(--gray-800);
}
.cart-drawer-header h3 { margin: 0; }
.cart-close {
  background: none; border: none; color: var(--white);
  font-size: 1.8rem; line-height: 1; cursor: pointer;
}
.cart-items { flex: 1; overflow-y: auto; padding: 1rem 1.6rem; }
.cart-empty { color: var(--gray-500); }
.cart-item {
  display: flex; justify-content: space-between; align-items: center;
  gap: 0.8rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--gray-800);
}
.cart-item-name { color: var(--white); font-size: 0.92rem; }
.cart-item-price { color: var(--gray-400); font-size: 0.85rem; }
.cart-item-qty {
  display: flex; align-items: center; gap: 0.5rem;
}
.cart-item-qty button {
  background: none; border: 1px solid var(--gray-700); color: var(--white);
  width: 1.6rem; height: 1.6rem; cursor: pointer; font-size: 0.9rem;
}
.cart-item-remove {
  background: none; border: none; color: var(--gray-500);
  cursor: pointer; font-size: 0.78rem; text-decoration: underline;
}
.cart-footer { padding: 1.4rem 1.6rem; border-top: 1px solid var(--gray-800); }
.cart-total-row {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 1rem; font-family: var(--font-display);
  color: var(--white); font-size: 1.1rem; letter-spacing: 0.03em;
}
.cart-checkout { width: 100%; justify-content: center; }

/* ---------- Modal (bulk order prompt) ---------- */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.6);
  opacity: 0; visibility: hidden;
  transition: opacity var(--dur) var(--ease), visibility var(--dur) var(--ease);
  z-index: 110;
}
.modal-overlay.is-open { opacity: 1; visibility: visible; }
.modal {
  position: fixed;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%) scale(0.96);
  width: min(400px, 90vw);
  background: var(--gray-950);
  border: 1px solid var(--gray-700);
  padding: 2rem 2rem 2.2rem;
  text-align: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility var(--dur) var(--ease);
  z-index: 111;
}
.modal.is-open { opacity: 1; visibility: visible; transform: translate(-50%, -50%) scale(1); }
.modal h3 { margin-bottom: 0.5em; }
.modal p { margin-bottom: 1.6em; }
.modal-actions { display: flex; gap: 0.8rem; justify-content: center; }


/* ---------- Class / course list ---------- */
.course-row {
  display: grid;
  grid-template-columns: 90px 1fr auto;
  gap: 1.6rem;
  align-items: center;
  padding: 2rem 0;
  border-top: 1px solid var(--gray-800);
  transition: padding-left var(--dur) var(--ease);
}
.course-row:hover { padding-left: 12px; }
.course-row:last-child { border-bottom: 1px solid var(--gray-800); }
.course-index { font-family: var(--font-display); font-size: 2rem; color: var(--gray-700); }
.course-tags { display: flex; gap: 0.5rem; margin-top: 0.6rem; flex-wrap: wrap; }
.tag {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.68rem;
  color: var(--gray-500);
  border: 1px solid var(--gray-700);
  padding: 3px 9px;
}
.course-duration { text-align: right; }
.course-duration .dur { display: block; font-family: var(--font-display); color: var(--white); font-size: 1.1rem; }
.course-duration span.label { font-size: 0.72rem; color: var(--gray-500); text-transform: uppercase; letter-spacing: 0.1em; }

/* ---------- Stats ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5px; background: var(--gray-800); }
.stat { background: var(--black); padding: 2.4rem 1.5rem; text-align: center; }
.stat .value { font-family: var(--font-display); font-size: 2.6rem; color: var(--white); }
.stat .label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.14em; color: var(--gray-500); }

/* ---------- CTA band ---------- */
.cta-band {
  text-align: center;
  padding: 6rem 0;
  background: var(--gray-950);
  border-top: 1px solid var(--gray-800);
  border-bottom: 1px solid var(--gray-800);
}
.cta-band h2 { margin-bottom: 0.6em; }
.cta-band p { max-width: 520px; margin-inline: auto; }

/* ---------- Footer ---------- */
.site-footer { padding: 4rem 0 2.5rem; }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--gray-800);
}
.footer-grid h4 {
  font-size: 0.78rem;
  color: var(--gray-500);
  letter-spacing: 0.16em;
  margin-bottom: 1.1em;
}
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin-bottom: 0.7em; }
.footer-grid a { color: var(--gray-400); transition: color var(--dur) var(--ease); }
.footer-grid a:hover { color: var(--white); }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 1.8rem; color: var(--gray-600); font-size: 0.82rem;
  flex-wrap: wrap; gap: 1rem;
}
.footer-bottom .brand-mark img { height: 26px; }

/* ---------- Reveal-on-scroll animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ---------- Page hero (interior pages) ---------- */
.page-hero {
  padding: 11rem 0 4rem;
  border-bottom: 1px solid var(--gray-800);
}
.page-hero p { max-width: 560px; font-size: 1.05rem; }

/* ---------- About ---------- */
.about-photo { aspect-ratio: 3/4; overflow: hidden; background: var(--gray-900); }
.about-photo img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(1) contrast(1.05); }
.value-list { list-style: none; padding: 0; margin: 0; }
.value-list li {
  display: flex; gap: 1.4rem; padding: 1.6rem 0; border-top: 1px solid var(--gray-800);
}
.value-list li:last-child { border-bottom: 1px solid var(--gray-800); }
.value-list .mark { font-family: var(--font-display); color: var(--gray-700); font-size: 1.4rem; }

/* ---------- Testimonials ---------- */
.testimonial-card { display: flex; flex-direction: column; justify-content: space-between; }
.testimonial-quote { font-size: 1rem; color: var(--gray-200); margin-bottom: 1.6rem; }
.testimonial-attribution { display: flex; flex-direction: column; gap: 0.3rem; }
.testimonial-name { font-family: var(--font-display); text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.85rem; color: var(--white); }
.testimonial-tag { font-size: 0.78rem; color: var(--gray-500); }

/* ---------- Checkout ---------- */
.checkout-empty { text-align: center; padding: 4rem 0 6rem; }
.checkout-empty p { margin-bottom: 1.4rem; }
.checkout-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 2rem;
  align-items: start;
  padding-bottom: 6rem;
}
.checkout-main { display: flex; flex-direction: column; gap: 1.6rem; }
.checkout-panel {
  background: var(--gray-950);
  border: 1px solid var(--gray-800);
  padding: 1.8rem 1.8rem 2rem;
}
.checkout-panel h3 { margin-bottom: 1.1em; }
.checkout-items { display: flex; flex-direction: column; }
.checkout-item {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem 0;
  border-top: 1px solid var(--gray-800);
}
.checkout-item:first-child { border-top: none; }
.checkout-item-name { color: var(--white); font-size: 0.92rem; }
.checkout-item-price { color: var(--gray-500); font-size: 0.8rem; }
.checkout-item-total { color: var(--white); font-family: var(--font-display); font-size: 1rem; min-width: 4.5em; text-align: right; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; margin-bottom: 1.2rem; }
.form-row-3 { grid-template-columns: 1fr 1fr 1fr; }
.form-row-full { grid-column: 1 / -1; }
.form-row label {
  display: flex; flex-direction: column; gap: 0.5em;
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  color: var(--gray-400);
}
.form-row .optional { text-transform: none; letter-spacing: 0; color: var(--gray-600); font-size: 0.75rem; }
.form-row input, .form-row select {
  font-family: var(--font-body);
  font-size: 0.95rem;
  letter-spacing: normal;
  text-transform: none;
  color: var(--white);
  background: var(--gray-900);
  border: 1px solid var(--gray-700);
  padding: 0.75em 0.9em;
}
.form-row input:focus, .form-row select:focus {
  outline: none;
  border-color: var(--gray-400);
}

.checkout-summary {
  background: var(--gray-950);
  border: 1px solid var(--gray-800);
  padding: 1.8rem 1.8rem 2rem;
  position: sticky;
  top: 100px;
}
.checkout-summary h3 { margin-bottom: 1.1em; }
.summary-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0.6rem 0;
  border-top: 1px solid var(--gray-800);
  color: var(--gray-400);
  font-size: 0.92rem;
}
.summary-row:first-of-type { border-top: none; }
#sum-tax-rate, #sum-shipping-detail { color: var(--gray-600); font-size: 0.78rem; }
.summary-total {
  border-top: 1px solid var(--gray-700);
  margin-top: 0.4rem;
  padding-top: 1rem;
  font-family: var(--font-display);
  color: var(--white);
  font-size: 1.2rem;
  letter-spacing: 0.03em;
}
.checkout-submit { width: 100%; justify-content: center; margin-top: 1.4rem; }
.checkout-disclaimer { font-size: 0.75rem; color: var(--gray-600); text-align: center; margin: 0.9em 0 0; }
.checkout-notice {
  margin-top: 1rem;
  padding: 0.9rem 1rem;
  background: var(--gray-900);
  border: 1px solid var(--gray-700);
  color: var(--gray-200);
  font-size: 0.85rem;
  text-align: center;
}

/* ---------- Form fieldsets (radio / checkbox groups) ---------- */
.form-fieldset { border: none; padding: 0; margin: 0; }
.form-fieldset legend {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  color: var(--gray-400);
  padding: 0;
  margin-bottom: 0.8em;
}
.radio-group, .checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}
.radio-item, .checkbox-item {
  display: flex;
  align-items: center;
  gap: 0.7em;
  font-size: 0.92rem;
  color: var(--gray-300);
  cursor: pointer;
}
.radio-item input, .checkbox-item input {
  accent-color: var(--white);
  width: 1.05em;
  height: 1.05em;
  cursor: pointer;
}

/* ---------- Utility ---------- */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .grid-3, .grid-products { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .section-split { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 700px) {
  .main-nav { position: fixed; top: 76px; left: 0; right: 0; bottom: 0;
    background: var(--black); flex-direction: column; justify-content: flex-start;
    padding: 2.5rem 24px; gap: 1.6rem; transform: translateX(100%);
    transition: transform var(--dur) var(--ease); }
  .main-nav.open { transform: translateX(0); }
  .nav-toggle { display: flex; }
  .grid-3, .grid-products, .grid-2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .course-row { grid-template-columns: 1fr; gap: 0.6rem; }
  .course-duration { text-align: left; }
  .checkout-grid { grid-template-columns: 1fr; }
  .checkout-summary { position: static; }
  .form-row, .form-row-3 { grid-template-columns: 1fr; }
}