/* ==========================================================================
   GIAO DIỆN CHÍNH 4 MÀN HÌNH & CHẾ ĐỘ TRÌNH CHIẾU SỰ KIỆN
   ========================================================================== */

.ambient-backdrop {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.silk-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.65;
}

.silk-glow--top {
  width: 55vw;
  height: 55vw;
  top: -20vw;
  right: -12vw;
  background: radial-gradient(circle, rgba(241, 224, 178, 0.85), transparent 70%);
}

.silk-glow--bottom {
  width: 50vw;
  height: 50vw;
  bottom: -22vw;
  left: -12vw;
  background: radial-gradient(circle, rgba(228, 195, 115, 0.45), transparent 70%);
}

.filigree-frame {
  position: fixed;
  inset: 14px;
  border: 1px solid rgba(200, 155, 60, 0.25);
  border-radius: 22px;
  pointer-events: none;
}

#ambientCanvas,
#celebrationCanvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

#ambientCanvas {
  z-index: 1;
}

#celebrationCanvas {
  z-index: 50;
}

/* Header thương hiệu */
.brand-header {
  position: sticky;
  top: 0;
  z-index: 40;
  padding: 0.85rem 1.75rem;
  background: rgba(253, 251, 247, 0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(200, 155, 60, 0.22);
}

.brand-header__inner {
  max-width: 1360px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand-logo img {
  height: 50px;
  width: auto;
}

.brand-nav {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.nav-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.52rem 1rem;
  border-radius: var(--radius-pill);
  border: var(--border-gold-thin);
  background: rgba(255, 253, 248, 0.9);
  color: var(--color-brown-gold);
  font-size: 0.88rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.22s ease;
}

.nav-pill:hover,
.nav-pill.is-active {
  background: var(--color-champagne-soft);
  border-color: var(--color-gold-primary);
  color: var(--color-brown-dark);
}

.nav-pill__icon {
  color: var(--color-gold-primary);
}

.nav-pill--subtle {
  opacity: 0.78;
}

/* Thanh tiến trình 3 bước chơi */
.step-indicator {
  position: relative;
  z-index: 20;
  max-width: 680px;
  margin: 1rem auto 0;
  padding: 0 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
}

.step-item {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.38rem 0.9rem;
  border-radius: var(--radius-pill);
  background: rgba(244, 236, 224, 0.75);
  border: 1px solid rgba(200, 155, 60, 0.25);
  color: var(--color-brown-muted);
  font-size: 0.82rem;
  font-weight: 500;
  transition: all 0.3s ease;
}

.step-item__num {
  font-weight: 700;
  color: var(--color-gold-deep);
}

.step-item.is-active {
  background: var(--color-champagne);
  border-color: var(--color-gold-primary);
  color: var(--color-brown-dark);
  box-shadow: 0 4px 14px rgba(200, 155, 60, 0.22);
}

.step-item.is-done {
  background: rgba(255, 252, 245, 0.95);
  border-color: var(--color-gold-primary);
  color: var(--color-brown-gold);
}

.step-line {
  flex: 1;
  max-width: 48px;
  height: 1px;
  background: rgba(200, 155, 60, 0.45);
}

/* Sân khấu chính */
.app-stage {
  position: relative;
  z-index: 10;
  max-width: 1320px;
  margin: 0 auto;
  padding: 1.5rem 1.5rem 3rem;
  min-height: calc(100vh - 96px);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.screen {
  display: none;
  width: 100%;
}

.screen.is-active {
  display: block;
}

/* ================= MÀN HÌNH 1: CHÀO MỪNG ================= */
.welcome-card {
  max-width: 880px;
  margin: 0 auto;
  padding: 3.25rem 2.5rem;
  text-align: center;
  background: var(--grad-champagne-card);
  border: 1.5px solid rgba(200, 155, 60, 0.55);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-luxury-md), inset 0 0 0 6px rgba(253, 251, 247, 0.75);
  position: relative;
}

.luxury-ornament-top {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.9rem;
  margin-bottom: 1.1rem;
  color: var(--color-gold-primary);
}

.luxury-ornament-top span {
  width: 72px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-gold-primary), transparent);
}

.brand-kicker {
  margin: 0 0 0.75rem;
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.24em;
  color: var(--color-gold-deep);
}

.welcome-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 4.3vw, 3.6rem);
  font-weight: 800;
  line-height: 1.22;
  color: var(--color-brown-dark);
  letter-spacing: 0.02em;
}

.welcome-subtitle {
  margin: 1.35rem auto 0;
  max-width: 620px;
  font-size: clamp(1.05rem, 1.6vw, 1.28rem);
  font-style: italic;
  color: var(--color-brown-muted);
  line-height: 1.65;
}

.welcome-divider {
  margin: 1.85rem auto;
  width: 220px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-gold-primary), transparent);
  position: relative;
}

.diamond-dot {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 9px;
  height: 9px;
  background: var(--color-gold-primary);
  transform: translate(-50%, -50%) rotate(45deg);
}

.welcome-actions {
  margin-top: 0.5rem;
}

.welcome-highlights {
  margin-top: 2.35rem;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.highlight-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.48rem 1.05rem;
  border-radius: var(--radius-pill);
  background: rgba(253, 251, 247, 0.88);
  border: var(--border-gold-thin);
  font-size: 0.88rem;
  color: var(--color-brown-gold);
}

.highlight-chip__dot {
  color: var(--color-gold-primary);
}

/* Tiêu đề các màn hình */
.screen-header {
  text-align: center;
  margin-bottom: 2rem;
}

.screen-header--compact {
  margin-bottom: 1.45rem;
}

.screen-eyebrow {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--color-gold-deep);
  margin-bottom: 0.45rem;
}

.screen-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3.1vw, 2.65rem);
  font-weight: 700;
  color: var(--color-brown-dark);
}

.screen-desc {
  margin: 0.6rem auto 0;
  max-width: 650px;
  font-size: 1.02rem;
  color: var(--color-brown-muted);
  line-height: 1.55;
}

/* ================= MÀN HÌNH 2: 4 BIỂU TƯỢNG MAY MẮN ================= */
.symbols-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.35rem;
}

.symbol-card {
  position: relative;
  background: var(--grad-champagne-card);
  border: 1.5px solid rgba(200, 155, 60, 0.42);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1.25rem 1.5rem;
  text-align: center;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  box-shadow: var(--shadow-luxury-sm), inset 0 0 0 4px rgba(253, 251, 247, 0.72);
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), border-color 0.3s ease, box-shadow 0.35s ease;
}

.symbol-card:hover {
  transform: translateY(-8px) scale(1.02);
  border-color: var(--color-gold-primary);
  box-shadow: 0 22px 46px rgba(200, 155, 60, 0.28), inset 0 0 0 4px rgba(255, 252, 245, 0.9);
}

.symbol-card.is-selected {
  transform: scale(1.05);
  border-color: var(--color-gold-deep);
  background: linear-gradient(165deg, #FFFDF8 0%, #F5E6C4 100%);
  box-shadow: 0 24px 52px rgba(200, 155, 60, 0.38);
}

.symbol-card__visual {
  position: relative;
  width: 148px;
  height: 148px;
  margin-bottom: 1rem;
  display: grid;
  place-items: center;
}

.symbol-card__aura {
  position: absolute;
  inset: 8px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(228, 195, 115, 0.45) 0%, transparent 70%);
  transition: transform 0.35s ease, opacity 0.35s ease;
}

.symbol-card:hover .symbol-card__aura {
  transform: scale(1.18);
  opacity: 0.95;
}

.symbol-card__visual img {
  position: relative;
  width: 128px;
  height: 128px;
  object-fit: contain;
  filter: drop-shadow(0 10px 16px rgba(155, 112, 30, 0.22));
  transition: transform 0.35s ease;
}

.symbol-card:hover .symbol-card__visual img {
  transform: translateY(-4px) scale(1.05);
}

.symbol-card__name {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-brown-dark);
}

.symbol-card__meaning {
  margin: 0.5rem 0 0.75rem;
  padding: 0.35rem 0.95rem;
  border-radius: var(--radius-pill);
  background: var(--color-champagne-soft);
  border: 1px solid rgba(200, 155, 60, 0.4);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-gold-deep);
}

.symbol-card__desc {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--color-brown-muted);
}

.symbol-card__cta {
  margin-top: auto;
  padding-top: 1.15rem;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--color-gold-deep);
}

.screen-footer-nav {
  margin-top: 1.85rem;
  text-align: center;
}

/* ================= MÀN HÌNH 3: LỜI CHÚC & SẢN PHẨM ================= */
.selected-symbol-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.42rem 1.15rem;
  border-radius: var(--radius-pill);
  background: var(--color-champagne-soft);
  border: var(--border-gold-strong);
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-brown-dark);
  margin-bottom: 0.6rem;
}

.pill-gem {
  color: var(--color-gold-primary);
}

.showcase-layout {
  display: grid;
  grid-template-columns: 1fr 1.12fr;
  gap: 1.75rem;
  align-items: stretch;
}

.blessing-panel,
.product-panel {
  background: var(--grad-champagne-card);
  border: 1.5px solid rgba(200, 155, 60, 0.52);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-luxury-md), inset 0 0 0 5px rgba(253, 251, 247, 0.72);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
}

.blessing-panel__emblem {
  width: 112px;
  height: 112px;
  margin-bottom: 0.85rem;
}

.blessing-panel__emblem img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.blessing-panel__meaning {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-gold-deep);
}

.luxury-line {
  width: 120px;
  height: 1.5px;
  margin: 1rem auto;
  background: linear-gradient(90deg, transparent, var(--color-gold-primary), transparent);
}

.blessing-quote {
  margin: 0.25rem 0 1.15rem;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2vw, 1.62rem);
  font-style: italic;
  line-height: 1.65;
  color: var(--color-brown-dark);
}

.blessing-signature {
  margin: 0;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--color-brown-muted);
}

.product-panel__badge {
  position: absolute;
  top: 1.15rem;
  right: 1.25rem;
  padding: 0.32rem 0.85rem;
  border-radius: var(--radius-pill);
  background: var(--grad-gold-button);
  color: var(--color-brown-dark);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.product-stage {
  position: relative;
  width: 240px;
  height: 240px;
  margin: 0.5rem auto 1.1rem;
  display: grid;
  place-items: center;
}

.product-stage__halo {
  position: absolute;
  inset: 10px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(241, 224, 178, 0.9) 0%, rgba(200, 155, 60, 0.18) 55%, transparent 72%);
  animation: pulseHalo 4s ease-in-out infinite;
}

.product-stage__img {
  position: relative;
  width: 215px;
  height: 215px;
  object-fit: contain;
  border-radius: 16px;
  filter: drop-shadow(0 14px 24px rgba(90, 64, 22, 0.2));
}

.product-panel__name {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.48rem;
  font-weight: 700;
  color: var(--color-brown-dark);
}

.product-panel__desc {
  margin: 0.65rem auto 0;
  max-width: 460px;
  font-size: 0.96rem;
  line-height: 1.6;
  color: var(--color-brown-muted);
}

.screen-actions-bar {
  margin-top: 1.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ================= MÀN HÌNH 4: HỘP QUÀ CAO CẤP & KẾT QUẢ ================= */
.gift-box-stage {
  text-align: center;
}

.luxury-gift-wrapper {
  position: relative;
  width: 310px;
  height: 310px;
  margin: 0.75rem auto 1.25rem;
  display: grid;
  place-items: center;
  cursor: pointer;
  outline: none;
}

.gift-aura-rays {
  position: absolute;
  inset: -24px;
  border-radius: 50%;
  background: repeating-conic-gradient(
    from 0deg,
    rgba(228, 195, 115, 0.26) 0deg 10deg,
    transparent 10deg 22deg
  );
  mask-image: radial-gradient(circle, black 32%, transparent 70%);
  -webkit-mask-image: radial-gradient(circle, black 32%, transparent 70%);
  animation: spinSlow 24s linear infinite;
}

.gift-aura-ring {
  position: absolute;
  inset: 16px;
  border-radius: 50%;
  border: 1.5px dashed rgba(200, 155, 60, 0.55);
  animation: spinReverse 30s linear infinite;
}

.gift-box-3d {
  position: relative;
  width: 210px;
  height: 205px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
}

.gift-box-3d.is-floating {
  animation: giftGentleFloat 2.8s ease-in-out infinite;
}

/* Nắp hộp Champagne & Ruy băng Vàng Kim */
.gift-lid {
  position: relative;
  z-index: 4;
  width: 226px;
  display: flex;
  flex-direction: column;
  align-items: center;
  transform-origin: bottom right;
  transition: transform 0.8s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.6s ease;
}

.gift-bow {
  position: relative;
  width: 112px;
  height: 44px;
  margin-bottom: -4px;
}

.bow-loop {
  position: absolute;
  top: 4px;
  width: 48px;
  height: 32px;
  border-radius: 50% 50% 10% 50%;
  background: linear-gradient(135deg, #DFBE6F, #9E721E);
  border: 1px solid #FFF5D6;
  box-shadow: 0 4px 10px rgba(90, 64, 22, 0.25);
}

.bow-loop--left {
  left: 6px;
  transform: rotate(-16deg);
}

.bow-loop--right {
  right: 6px;
  border-radius: 50% 50% 50% 10%;
  transform: rotate(16deg);
}

.bow-knot {
  position: absolute;
  left: 50%;
  top: 12px;
  transform: translateX(-50%);
  width: 28px;
  height: 26px;
  border-radius: 8px;
  background: var(--grad-gold-button);
  border: 1px solid #FFF8E6;
  color: var(--color-brown-dark);
  font-size: 0.8rem;
  display: grid;
  place-items: center;
  box-shadow: 0 4px 10px rgba(90, 64, 22, 0.3);
}

.gift-lid__cap {
  position: relative;
  width: 100%;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, #FBF2DA 0%, #EAD296 55%, #D9B768 100%);
  border: 1.5px solid #C89B3C;
  box-shadow: 0 8px 18px rgba(90, 64, 22, 0.18);
  overflow: hidden;
}

.gift-lid__ribbon {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 34px;
  transform: translateX(-50%);
  background: var(--grad-gold-metallic);
}

.gift-inner-glow {
  position: absolute;
  top: 52px;
  width: 170px;
  height: 45px;
  border-radius: 50%;
  background: radial-gradient(circle, #FFFDF5 0%, #F1D382 55%, transparent 75%);
  opacity: 0;
  z-index: 3;
  transition: opacity 0.4s ease, transform 0.6s ease;
}

/* Thân hộp Vàng Champagne */
.gift-body {
  position: relative;
  z-index: 2;
  width: 204px;
  height: 146px;
  margin-top: -2px;
  border-radius: 0 0 16px 16px;
  background: linear-gradient(160deg, #F8ECCB 0%, #E7CE8E 55%, #D5B263 100%);
  border: 1.5px solid #C89B3C;
  box-shadow: 0 22px 42px rgba(90, 64, 22, 0.24), inset 0 6px 14px rgba(255, 255, 255, 0.55);
  overflow: hidden;
  display: grid;
  place-items: center;
}

.gift-body__ribbon-v {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 34px;
  transform: translateX(-50%);
  background: var(--grad-gold-metallic);
}

.gift-body__ribbon-h {
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 28px;
  transform: translateY(-50%);
  background: linear-gradient(90deg, #9E721E, #DFBE6F, #9E721E);
  opacity: 0.9;
}

.gift-body__crest {
  position: relative;
  z-index: 2;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--color-cream-bg);
  border: 2px solid var(--color-gold-deep);
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--color-brown-dark);
  box-shadow: 0 4px 12px rgba(90, 64, 22, 0.25);
}

/* Trạng thái hộp đã mở (fallback CSS nếu không dùng GSAP) */
.gift-box-3d.is-opened .gift-lid {
  transform: translate(32px, -68px) rotate(28deg);
  opacity: 0.2;
}

.gift-box-3d.is-opened .gift-inner-glow {
  opacity: 1;
  transform: scale(1.8);
}

/* Thẻ kết quả phần quà chính giữa màn hình */
.gift-result-stage {
  max-width: 780px;
  margin: 0 auto;
}

.result-card {
  background: var(--grad-champagne-card);
  border: 2px solid var(--color-gold-primary);
  border-radius: var(--radius-lg);
  padding: 2.25rem 2rem;
  text-align: center;
  box-shadow: 0 28px 65px rgba(90, 64, 22, 0.22), inset 0 0 0 6px rgba(253, 251, 247, 0.85);
  position: relative;
}

.result-card__crown {
  font-size: 2rem;
  color: var(--color-gold-primary);
  line-height: 1;
  margin-bottom: 0.35rem;
}

.result-card__badge {
  display: inline-block;
  padding: 0.38rem 1.2rem;
  border-radius: var(--radius-pill);
  background: var(--grad-gold-button);
  color: var(--color-brown-dark);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  margin-bottom: 0.65rem;
}

.result-card__congrats {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--color-brown-muted);
}

.result-prize-showcase {
  position: relative;
  width: 190px;
  height: 190px;
  margin: 1rem auto;
  display: grid;
  place-items: center;
}

.result-prize-showcase__glow {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(241, 224, 178, 0.95) 0%, rgba(200, 155, 60, 0.22) 55%, transparent 72%);
  animation: pulseHalo 3s ease-in-out infinite;
}

.result-prize-showcase__img {
  position: relative;
  width: 168px;
  height: 168px;
  object-fit: contain;
  border-radius: 16px;
  filter: drop-shadow(0 12px 22px rgba(90, 64, 22, 0.22));
}

.result-card__prize-name {
  margin: 0.25rem 0 0.5rem;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.2vw, 2.55rem);
  font-weight: 800;
  color: var(--color-brown-dark);
}

.result-card__prize-desc {
  margin: 0 auto;
  max-width: 560px;
  font-size: 1.02rem;
  color: var(--color-brown-muted);
  line-height: 1.55;
}

.result-meta-box {
  margin: 1.25rem auto;
  padding: 0.8rem 1.25rem;
  max-width: 560px;
  border-radius: var(--radius-md);
  background: rgba(253, 251, 247, 0.9);
  border: var(--border-gold-thin);
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.9rem;
}

.result-meta-item strong {
  color: var(--color-brown-dark);
  margin-left: 0.3rem;
}

.result-blessing-note {
  margin: 0.75rem auto;
  max-width: 580px;
  font-weight: 500;
  color: var(--color-brown-gold);
}

.result-disclaimer {
  margin: 0.75rem auto 0;
  max-width: 600px;
  font-size: 0.8rem;
  line-height: 1.48;
  color: var(--color-brown-muted);
}

.result-actions {
  margin-top: 1.5rem;
  display: flex;
  justify-content: center;
  gap: 0.9rem;
  flex-wrap: wrap;
}

/* Bộ sưu tập trong Modal */
.collection-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.15rem;
}

.collection-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  border-radius: var(--radius-md);
  background: rgba(255, 253, 248, 0.92);
  border: var(--border-gold-thin);
}

.collection-item img {
  width: 88px;
  height: 88px;
  object-fit: contain;
  flex-shrink: 0;
}

.collection-item h4 {
  margin: 0.25rem 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--color-brown-dark);
}

.collection-item p {
  margin: 0;
  font-size: 0.86rem;
  color: var(--color-brown-muted);
  line-height: 1.45;
}

.collection-item__tag {
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-gold-deep);
}

.rules-list {
  margin: 0;
  padding-left: 1.25rem;
  line-height: 1.75;
  color: var(--color-brown-gold);
}

/* Keyframes tinh tế */
@keyframes giftGentleFloat {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
  }
  25% {
    transform: translateY(-6px) rotate(-1.4deg);
  }
  50% {
    transform: translateY(-9px) rotate(0deg);
  }
  75% {
    transform: translateY(-6px) rotate(1.4deg);
  }
}

@keyframes spinSlow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes spinReverse {
  from { transform: rotate(360deg); }
  to { transform: rotate(0deg); }
}

@keyframes pulseHalo {
  0%, 100% { transform: scale(0.95); opacity: 0.78; }
  50% { transform: scale(1.06); opacity: 1; }
}

/* Responsive Mobile, Tablet & Màn hình LED */
@media (max-width: 1024px) {
  .symbols-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .showcase-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .brand-header {
    padding: 0.75rem 1rem;
  }

  .brand-logo img {
    height: 40px;
  }

  .symbols-grid,
  .collection-grid {
    grid-template-columns: 1fr;
  }

  .welcome-card {
    padding: 2.25rem 1.25rem;
  }

  .step-item__label {
    display: none;
  }
}