/* ==============================================
   TRADEIT PROMO — amberosa.com
   Design System: Charcoal + Orange
   ============================================== */

:root {
  --tdi-bg: #141417;
  --tdi-surface: #1c1c21;
  --tdi-surface2: #252529;
  --tdi-border: #303038;
  --tdi-border2: #3a3a44;
  --tdi-accent: #f7931a;
  --tdi-accent-dark: #d87d14;
  --tdi-accent-light: #ffb54d;
  --tdi-accent-tint: rgba(247,147,26,0.10);
  --tdi-accent-glow: rgba(247,147,26,0.40);
  --tdi-text: #eaeaf0;
  --tdi-text-2: #a0a0b0;
  --tdi-muted: #6b6b7a;
  --tdi-text-on-accent: #141417;
  --tdi-code-bg: #141417;
  --tdi-code-text: #f7931a;
  --tdi-code-border: rgba(247,147,26,0.25);
  --tdi-radius: 8px;
  --tdi-radius-lg: 14px;
  --tdi-radius-xl: 20px;
  --tdi-shadow: 0 2px 12px rgba(0,0,0,0.25);
  --tdi-shadow-lg: 0 8px 32px rgba(0,0,0,0.35);
  --tdi-transition: 0.2s ease;
  --tdi-max-w: 1120px;
  --tdi-space-xs: 0.5rem;
  --tdi-space-sm: 1rem;
  --tdi-space-md: 1.5rem;
  --tdi-space-lg: 2.5rem;
  --tdi-space-xl: 4rem;
  --tdi-space-2xl: 6rem;
  --tdi-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --tdi-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

/* RESET */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--tdi-font);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--tdi-text);
  background: var(--tdi-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--tdi-accent); text-decoration: none; transition: color var(--tdi-transition); }
a:hover { color: var(--tdi-accent-light); }
a:focus-visible, button:focus-visible { outline: 2px solid var(--tdi-accent); outline-offset: 2px; }
ul, ol { list-style: none; }
table { border-collapse: collapse; width: 100%; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* CONTAINER */
.tdi-container {
  width: 100%;
  max-width: var(--tdi-max-w);
  margin: 0 auto;
  padding: 0 var(--tdi-space-md);
}

/* ====================== HEADER ====================== */
.tdi-masthead {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(20,20,23,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 0.5px solid var(--tdi-border);
  transition: background var(--tdi-transition);
}
.tdi-masthead--scrolled { background: rgba(20,20,23,0.98); }
.tdi-masthead__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: var(--tdi-space-sm);
}
.tdi-masthead__brand { display: flex; align-items: center; flex-shrink: 0; }
.tdi-masthead__logo { height: 32px; width: auto; }
.tdi-masthead__nav { display: flex; align-items: center; gap: var(--tdi-space-md); }
.tdi-masthead__link {
  color: var(--tdi-text-2);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: color var(--tdi-transition), border-color var(--tdi-transition);
}
.tdi-masthead__link:hover,
.tdi-masthead__link--active { color: var(--tdi-text); border-bottom-color: var(--tdi-accent); }
.tdi-masthead__cta { flex-shrink: 0; }
.tdi-masthead__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.tdi-masthead__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--tdi-text);
  border-radius: 2px;
  transition: transform var(--tdi-transition), opacity var(--tdi-transition);
}
.tdi-masthead__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.tdi-masthead__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.tdi-masthead__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* MOBILE MENU */
.tdi-mobile-menu {
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 999;
  background: rgba(20,20,23,0.98);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  display: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.tdi-mobile-menu--open { display: block; opacity: 1; }
.tdi-mobile-menu__nav {
  display: flex;
  flex-direction: column;
  padding: var(--tdi-space-lg) var(--tdi-space-md);
  gap: var(--tdi-space-sm);
}
.tdi-mobile-menu__link {
  color: var(--tdi-text-2);
  font-size: 1.125rem;
  font-weight: 500;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--tdi-border);
  transition: color var(--tdi-transition);
}
.tdi-mobile-menu__link:hover,
.tdi-mobile-menu__link--active { color: var(--tdi-accent); }

/* ====================== BUTTONS ====================== */
.tdi-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-family: var(--tdi-font);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1;
  color: var(--tdi-text-on-accent);
  background: linear-gradient(135deg, var(--tdi-accent), var(--tdi-accent-dark));
  border: none;
  border-radius: var(--tdi-radius);
  cursor: pointer;
  text-decoration: none;
  transition: box-shadow var(--tdi-transition), transform var(--tdi-transition), filter var(--tdi-transition);
  white-space: nowrap;
}
.tdi-btn:hover {
  color: var(--tdi-text-on-accent);
  box-shadow: 0 8px 28px var(--tdi-accent-glow);
  filter: brightness(1.1);
  transform: translateY(-1px);
}
.tdi-btn:active { transform: translateY(0); }
.tdi-btn--sm { padding: 0.5rem 1rem; font-size: 0.8125rem; }
.tdi-btn--full { width: 100%; }
.tdi-btn--outline {
  background: transparent;
  color: var(--tdi-accent);
  border: 1.5px solid var(--tdi-accent);
}
.tdi-btn--outline:hover {
  background: var(--tdi-accent-tint);
  color: var(--tdi-accent-light);
}
.tdi-btn--copy {
  background: linear-gradient(135deg, var(--tdi-accent), var(--tdi-accent-dark));
  color: var(--tdi-text-on-accent);
  font-weight: 700;
  padding: 0.75rem 1.25rem;
  border-radius: 0 var(--tdi-radius) var(--tdi-radius) 0;
  min-width: 120px;
}
.tdi-btn--copy.tdi-btn--copied {
  background: linear-gradient(135deg, #22c55e, #16a34a);
  pointer-events: none;
}

/* ====================== HERO ====================== */
.tdi-hero {
  padding: calc(64px + var(--tdi-space-xl)) 0 var(--tdi-space-xl);
  background: var(--tdi-bg);
  position: relative;
  overflow: hidden;
}
.tdi-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(247,147,26,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.tdi-hero__grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--tdi-space-lg);
  align-items: center;
}
.tdi-hero__content { position: relative; z-index: 2; }
.tdi-hero__title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--tdi-text);
  margin-bottom: var(--tdi-space-sm);
  letter-spacing: -0.02em;
}
.tdi-highlight { color: var(--tdi-accent); }
.tdi-hero__sub {
  font-size: 1.125rem;
  color: var(--tdi-text-2);
  max-width: 560px;
  margin-bottom: var(--tdi-space-lg);
}
.tdi-hero__actions {
  display: flex;
  gap: var(--tdi-space-sm);
  flex-wrap: wrap;
}
.tdi-hero__visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}
.tdi-hero__skins {
  height: auto;
  max-height: 480px;
  width: auto;
  filter: drop-shadow(0 8px 32px rgba(0,0,0,0.4));
  animation: tdi-float 6s ease-in-out infinite;
}
@keyframes tdi-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* ====================== CODE WIDGET ====================== */
.tdi-code-widget {
  background: var(--tdi-surface);
  border: 1.5px solid var(--tdi-code-border);
  border-radius: var(--tdi-radius-lg);
  padding: var(--tdi-space-md);
  margin-bottom: var(--tdi-space-lg);
  max-width: 520px;
  box-shadow: 0 0 40px rgba(247,147,26,0.06);
}
.tdi-code-widget__badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: #22c55e;
  margin-bottom: var(--tdi-space-sm);
}
.tdi-code-widget__row {
  display: flex;
  border-radius: var(--tdi-radius);
  overflow: hidden;
  border: 1px solid var(--tdi-border2);
  margin-bottom: 0.75rem;
}
.tdi-code-widget__code {
  flex: 1;
  background: var(--tdi-code-bg);
  color: var(--tdi-code-text);
  font-family: var(--tdi-mono);
  font-size: 1.5rem;
  font-weight: 700;
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  letter-spacing: 0.06em;
  user-select: all;
}
.tdi-code-widget__desc {
  font-size: 0.8125rem;
  color: var(--tdi-text-2);
  line-height: 1.5;
}

/* ====================== SECTIONS ====================== */
.tdi-section {
  padding: var(--tdi-space-xl) 0;
  background: var(--tdi-bg);
}
.tdi-section--alt { background: var(--tdi-surface); }
.tdi-section--date { padding: var(--tdi-space-lg) 0; }
.tdi-heading {
  font-size: clamp(1.375rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--tdi-text);
  margin-bottom: var(--tdi-space-sm);
  letter-spacing: -0.01em;
  line-height: 1.25;
}
.tdi-heading--lg { font-size: clamp(1.75rem, 4vw, 2.5rem); }
.tdi-heading em {
  color: var(--tdi-accent);
  font-style: normal;
}
.tdi-subtext {
  font-size: 1rem;
  color: var(--tdi-text-2);
  max-width: 720px;
  margin-bottom: var(--tdi-space-lg);
  line-height: 1.7;
}
.tdi-prose {
  font-size: 1rem;
  color: var(--tdi-text-2);
  line-height: 1.7;
  max-width: 780px;
}
.tdi-prose p { margin-bottom: var(--tdi-space-sm); }
.tdi-prose p:last-child { margin-bottom: 0; }
.tdi-prose strong { color: var(--tdi-text); font-weight: 600; }
.tdi-prose ul, .tdi-prose ol {
  padding-left: 1.5rem;
  margin-bottom: var(--tdi-space-sm);
}
.tdi-prose li {
  margin-bottom: 0.5rem;
  list-style: disc;
}
.tdi-prose h2 {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--tdi-text);
  margin-top: var(--tdi-space-lg);
  margin-bottom: var(--tdi-space-sm);
}
.tdi-cta-row {
  display: flex;
  justify-content: center;
  margin-top: var(--tdi-space-lg);
}
.tdi-updated {
  font-size: 0.875rem;
  color: var(--tdi-muted);
  text-align: center;
}

/* ====================== STEP CARDS ====================== */
.tdi-steps {
  display: grid;
  gap: var(--tdi-space-md);
  margin-top: var(--tdi-space-sm);
}
.tdi-step-card {
  display: flex;
  gap: var(--tdi-space-md);
  background: var(--tdi-surface);
  border: 1px solid var(--tdi-border);
  border-radius: var(--tdi-radius-lg);
  padding: var(--tdi-space-md) var(--tdi-space-md);
  transition: border-color var(--tdi-transition), box-shadow var(--tdi-transition);
}
.tdi-step-card:hover {
  border-color: var(--tdi-accent);
  box-shadow: 0 0 20px rgba(247,147,26,0.08);
}
.tdi-step-card__num {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--tdi-accent-tint);
  color: var(--tdi-accent);
  font-weight: 800;
  font-size: 1.125rem;
  border-radius: 50%;
}
.tdi-step-card__body { flex: 1; }
.tdi-step-card__title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--tdi-text);
  margin-bottom: 0.375rem;
}
.tdi-step-card__body p {
  font-size: 0.9375rem;
  color: var(--tdi-text-2);
  line-height: 1.6;
}
.tdi-step-card__body em { color: var(--tdi-accent); font-style: normal; font-weight: 600; }

/* ====================== REWARD CARDS ====================== */
.tdi-rewards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--tdi-space-md);
  margin-bottom: var(--tdi-space-lg);
}
.tdi-reward-card {
  background: var(--tdi-surface2);
  border: 1px solid var(--tdi-border);
  border-radius: var(--tdi-radius-lg);
  padding: var(--tdi-space-md);
  transition: border-color var(--tdi-transition), transform var(--tdi-transition);
}
.tdi-reward-card:hover { border-color: var(--tdi-accent); transform: translateY(-2px); }
.tdi-reward-card__icon { margin-bottom: 0.75rem; }
.tdi-reward-card__title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--tdi-text);
  margin-bottom: 0.5rem;
}
.tdi-reward-card p { font-size: 0.9375rem; color: var(--tdi-text-2); line-height: 1.6; }

/* ====================== PAYMENT STRIP ====================== */
.tdi-payment-strip {
  display: flex;
  justify-content: center;
  margin: var(--tdi-space-md) 0;
  opacity: 0.75;
}
.tdi-payment-strip img { max-width: 480px; height: auto; }

/* ====================== ABOUT ====================== */
.tdi-about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--tdi-space-xl);
  align-items: start;
}
.tdi-about-visual {
  display: flex;
  flex-direction: column;
  gap: var(--tdi-space-sm);
}
.tdi-about-img {
  border-radius: var(--tdi-radius-lg);
  box-shadow: var(--tdi-shadow-lg);
}
.tdi-partner-strip {
  display: flex;
  align-items: center;
  gap: var(--tdi-space-sm);
  opacity: 0.8;
}

/* ====================== TABLES ====================== */
.tdi-terms-table-wrap,
.tdi-codes-table-wrap {
  overflow-x: auto;
  border-radius: var(--tdi-radius-lg);
  border: 1px solid var(--tdi-border);
  margin-bottom: var(--tdi-space-md);
}
.tdi-terms-table,
.tdi-codes-table { min-width: 500px; }
.tdi-terms-table th,
.tdi-codes-table th {
  background: var(--tdi-surface2);
  color: var(--tdi-text);
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.875rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--tdi-border);
}
.tdi-terms-table td,
.tdi-codes-table td {
  padding: 0.75rem 1rem;
  font-size: 0.9375rem;
  color: var(--tdi-text-2);
  border-bottom: 1px solid var(--tdi-border);
  vertical-align: middle;
}
.tdi-terms-table tr:last-child td,
.tdi-codes-table tr:last-child td { border-bottom: none; }
.tdi-terms-table tr:hover td,
.tdi-codes-table tr:hover td { background: rgba(247,147,26,0.03); }
.tdi-code-inline {
  font-family: var(--tdi-mono);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--tdi-code-text);
  background: var(--tdi-code-bg);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  border: 1px solid var(--tdi-code-border);
  white-space: nowrap;
}
.tdi-status {
  font-size: 0.8125rem;
  font-weight: 600;
  white-space: nowrap;
}
.tdi-status--ok { color: #22c55e; }

/* ====================== PROVIDES ====================== */
.tdi-provides-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--tdi-space-xl);
  align-items: start;
}
.tdi-provides-visual {
  display: flex;
  flex-direction: column;
  gap: var(--tdi-space-md);
}
.tdi-provides-img {
  border-radius: var(--tdi-radius-xl);
  max-width: 320px;
  margin: 0 auto;
}
.tdi-blog-cards {
  display: grid;
  gap: var(--tdi-space-sm);
}
.tdi-blog-card {
  display: block;
  border-radius: var(--tdi-radius);
  overflow: hidden;
  border: 1px solid var(--tdi-border);
  transition: border-color var(--tdi-transition), transform var(--tdi-transition);
}
.tdi-blog-card:hover { border-color: var(--tdi-accent); transform: translateY(-2px); }
.tdi-blog-card img { width: 100%; height: auto; display: block; }

/* ====================== FAQ ====================== */
.tdi-faq { max-width: 780px; }
.tdi-faq__item {
  border: 1px solid var(--tdi-border);
  border-radius: var(--tdi-radius-lg);
  margin-bottom: var(--tdi-space-sm);
  overflow: hidden;
  transition: border-color var(--tdi-transition);
}
.tdi-faq__item:hover { border-color: var(--tdi-border2); }
.tdi-faq__item[open] { border-color: var(--tdi-accent); }
.tdi-faq__question {
  cursor: pointer;
  padding: 1rem var(--tdi-space-md);
  font-size: 1rem;
  font-weight: 600;
  color: var(--tdi-text);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--tdi-space-sm);
  transition: background var(--tdi-transition);
}
.tdi-faq__question:hover { background: rgba(255,255,255,0.02); }
.tdi-faq__question::-webkit-details-marker { display: none; }
.tdi-faq__question::after {
  content: '';
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 20 20'%3E%3Cpath d='M5 8l5 5 5-5' fill='none' stroke='%23a0a0b0' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  transition: transform 0.3s ease;
}
.tdi-faq__item[open] .tdi-faq__question::after { transform: rotate(180deg); }
.tdi-faq__answer {
  padding: 0 var(--tdi-space-md) var(--tdi-space-md);
  animation: tdi-fadein 0.25s ease;
}
.tdi-faq__answer p {
  font-size: 0.9375rem;
  color: var(--tdi-text-2);
  line-height: 1.7;
}
@keyframes tdi-fadein {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ====================== LEGAL ====================== */
.tdi-legal { padding-top: calc(64px + var(--tdi-space-xl)); }
.tdi-legal__body { max-width: 780px; }

/* ====================== FOOTER ====================== */
.tdi-footer {
  background: var(--tdi-surface);
  border-top: 1px solid var(--tdi-border);
  padding: var(--tdi-space-xl) 0 var(--tdi-space-lg);
}
.tdi-footer__top {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: var(--tdi-space-lg);
  flex-wrap: wrap;
  margin-bottom: var(--tdi-space-lg);
}
.tdi-footer__brand { display: flex; flex-direction: column; gap: 0.5rem; }
.tdi-footer__brand img { height: 28px; width: auto; }
.tdi-footer__tagline { font-size: 0.8125rem; color: var(--tdi-muted); }
.tdi-footer__links {
  display: flex;
  gap: var(--tdi-space-md);
  flex-wrap: wrap;
}
.tdi-footer__links a {
  font-size: 0.875rem;
  color: var(--tdi-text-2);
  transition: color var(--tdi-transition);
}
.tdi-footer__links a:hover { color: var(--tdi-accent); }
.tdi-footer__warning {
  display: flex;
  gap: var(--tdi-space-sm);
  background: rgba(247,147,26,0.05);
  border: 1px solid var(--tdi-code-border);
  border-radius: var(--tdi-radius-lg);
  padding: var(--tdi-space-md);
  margin-bottom: var(--tdi-space-lg);
}
.tdi-footer__warning-icon { font-size: 1.25rem; flex-shrink: 0; line-height: 1.4; }
.tdi-footer__warning p {
  font-size: 0.8125rem;
  color: var(--tdi-text-2);
  line-height: 1.6;
}
.tdi-footer__warning strong { color: var(--tdi-accent-light); }
.tdi-footer__orgs {
  display: flex;
  gap: var(--tdi-space-sm);
  align-items: center;
  margin-bottom: var(--tdi-space-lg);
}
.tdi-footer__org { transition: opacity var(--tdi-transition); }
.tdi-footer__org:hover { opacity: 0.7; }
.tdi-footer__bottom {
  border-top: 1px solid var(--tdi-border);
  padding-top: var(--tdi-space-md);
}
.tdi-footer__bottom p {
  font-size: 0.75rem;
  color: var(--tdi-muted);
  text-align: center;
}

/* ====================== SCROLL TO TOP ====================== */
.tdi-scroll-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 900;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--tdi-surface2);
  color: var(--tdi-text);
  border: 1px solid var(--tdi-border);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: var(--tdi-shadow);
  transition: opacity 0.3s ease, transform 0.3s ease, background var(--tdi-transition);
  opacity: 0;
  transform: translateY(12px);
}
.tdi-scroll-top:not([hidden]) { opacity: 1; transform: translateY(0); }
.tdi-scroll-top[hidden] { display: flex; opacity: 0; transform: translateY(12px); pointer-events: none; }
.tdi-scroll-top:hover {
  background: var(--tdi-accent);
  color: var(--tdi-text-on-accent);
  border-color: var(--tdi-accent);
}

/* ====================== TOAST ====================== */
.tdi-toast {
  position: fixed;
  bottom: 5rem;
  left: 50%;
  transform: translateX(-50%) translateY(12px);
  z-index: 1100;
  background: #22c55e;
  color: #fff;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.625rem 1.25rem;
  border-radius: 100px;
  box-shadow: 0 4px 20px rgba(34,197,94,0.35);
  opacity: 0;
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: none;
}
.tdi-toast--visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
.tdi-toast[hidden] { display: block; }

/* ====================== RESPONSIVE ====================== */
@media (max-width: 900px) {
  .tdi-hero__grid { grid-template-columns: 1fr; }
  .tdi-hero__visual { display: none; }
  .tdi-about-grid { grid-template-columns: 1fr; }
  .tdi-about-visual { order: -1; }
  .tdi-provides-grid { grid-template-columns: 1fr; }
  .tdi-provides-visual { order: -1; }
}

@media (max-width: 768px) {
  :root {
    --tdi-space-xl: 3rem;
    --tdi-space-2xl: 4rem;
  }
  .tdi-masthead__nav { display: none; }
  .tdi-masthead__cta { display: none; }
  .tdi-masthead__toggle { display: flex; }
  .tdi-hero__title { font-size: clamp(1.5rem, 6vw, 2rem); }
  .tdi-hero__sub { font-size: 1rem; }
  .tdi-code-widget__code { font-size: 1.25rem; }
  .tdi-hero__actions { flex-direction: column; }
  .tdi-hero__actions .tdi-btn { width: 100%; }
  .tdi-rewards-grid { grid-template-columns: 1fr; }
  .tdi-provides-img { max-width: 240px; }
  .tdi-footer__top { flex-direction: column; }
}

@media (max-width: 480px) {
  .tdi-container { padding: 0 var(--tdi-space-sm); }
  .tdi-step-card { flex-direction: column; gap: 0.75rem; }
  .tdi-code-widget { padding: var(--tdi-space-sm); }
  .tdi-code-widget__code { font-size: 1.125rem; padding: 0.625rem 1rem; }
  .tdi-btn--copy { min-width: 100px; font-size: 0.8125rem; padding: 0.625rem 0.75rem; }
  .tdi-codes-table { min-width: 600px; }
}