/* ============================================================
   Doremi 2000 — Components: buttons, cards, forms, dock, etc.
   ============================================================ */

/* ---------------- Buttons ---------------- */
.btn {
  --btn-pad-y: 0.85rem;
  --btn-pad-x: 1.6rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: var(--btn-pad-y) var(--btn-pad-x);
  border-radius: var(--r-pill);
  font-weight: 600;
  font-size: var(--fs-sm);
  letter-spacing: 0.01em;
  line-height: 1;
  white-space: nowrap;
  transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease),
              background var(--dur) var(--ease), color var(--dur) var(--ease),
              border-color var(--dur) var(--ease);
}
.btn:hover, .btn:focus-visible, .btn:active { will-change: transform; }
.btn svg { width: 18px; height: 18px; }
.btn:active { transform: translateY(1px) scale(0.99); }

.btn--gold {
  background: var(--grad-gold);
  color: var(--on-gold);
  box-shadow: 0 14px 34px -16px rgba(201,162,75,0.7);
}
.btn--gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 22px 50px -18px rgba(201,162,75,0.85);
}

.btn--ghost {
  border: 1px solid var(--line-gold);
  color: var(--ivory);
  background: rgba(201,162,75,0.04);
}
.btn--ghost:hover {
  border-color: var(--gold);
  background: rgba(201,162,75,0.1);
  transform: translateY(-2px);
}

.btn--zalo  { background: var(--zalo); color: #fff; }
.btn--zalo:hover { transform: translateY(-2px); box-shadow: 0 18px 40px -18px rgba(0,104,255,0.7); }

.btn--lg { --btn-pad-y: 1.05rem; --btn-pad-x: 2.1rem; font-size: var(--fs-body); }
.btn--block { display: flex; width: 100%; }

.btn-row { display: flex; flex-wrap: wrap; gap: 0.9rem; }

/* Text link with arrow */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: var(--fs-sm);
  color: var(--gold);
  transition: gap var(--dur) var(--ease-out);
}
.link-arrow svg { width: 16px; height: 16px; transition: transform var(--dur) var(--ease-out); }
.link-arrow:hover { gap: 0.8rem; }
.link-arrow:hover svg { transform: translateX(3px); }

/* ---------------- Pills / badges ---------------- */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.95rem;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-2);
  background: rgba(255,255,255,0.02);
  font-size: var(--fs-xs);
  color: var(--muted);
  font-weight: 500;
}
.pill svg { width: 15px; height: 15px; color: var(--gold); }
.pill-row { display: flex; flex-wrap: wrap; gap: 0.6rem; }

/* ---------------- Generic card ---------------- */
.card {
  position: relative;
  background: var(--grad-surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: clamp(1.5rem, 1rem + 1.5vw, 2.2rem);
  overflow: hidden;
  transition: transform var(--dur) var(--ease-out), border-color var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease);
}
.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 100% at 50% 0%, rgba(201,162,75,0.08), transparent 55%);
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
  pointer-events: none;
}
.card:hover { transform: translateY(-6px); border-color: var(--line-gold); box-shadow: var(--shadow-lg); }
.card:hover::before { opacity: 1; }

/* ---------------- Forms ---------------- */
.field { display: flex; flex-direction: column; gap: 0.5rem; }
.field label {
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.9rem 1.1rem;
  background: var(--input-bg);
  border: 1px solid var(--line-2);
  border-radius: var(--r-md);
  color: var(--ivory);
  font-size: var(--fs-sm);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background var(--dur) var(--ease);
  appearance: none;
}
.field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' fill='none' stroke='%23c9a24b' stroke-width='2'%3E%3Cpath d='M3 5l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1.1rem center;
  padding-right: 2.6rem;
  cursor: pointer;
}
.field select option { background: var(--surface-2); color: var(--ivory); }
.field input::placeholder, .field textarea::placeholder { color: var(--muted-2); }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(201,162,75,0.16);
  background: var(--input-bg-focus);
}
.field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-note { font-size: var(--fs-xs); color: var(--muted-2); margin-top: 0.4rem; }
.form-note a { color: var(--gold); }

.form-success {
  display: none;
  align-items: center;
  gap: 0.7rem;
  padding: 0.9rem 1.1rem;
  border-radius: var(--r-md);
  background: rgba(201,162,75,0.1);
  border: 1px solid var(--line-gold);
  color: var(--ivory);
  font-size: var(--fs-sm);
}
.form-success.is-visible { display: flex; }
.form-success svg { width: 20px; height: 20px; color: var(--gold); flex-shrink: 0; }

/* ---------------- Marquee (brands) ---------------- */
.marquee {
  position: relative;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.marquee__track {
  display: flex;
  gap: clamp(2.2rem, 1rem + 4vw, 5rem);
  width: max-content;
  animation: marquee 38s linear infinite;
}
.marquee:hover .marquee__track { animation-play-state: paused; }
.marquee__item {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 1rem + 1.6vw, 2.2rem);
  font-weight: 600;
  color: var(--muted-2);
  white-space: nowrap;
  transition: color var(--dur) var(--ease);
  letter-spacing: 0.01em;
}
.marquee__item:hover { color: var(--gold); }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------------- Accordion (FAQ) ---------------- */
.accordion { border-top: 1px solid var(--line); }
.acc-item { border-bottom: 1px solid var(--line); }
.acc-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.4rem 0;
  text-align: left;
  font-family: var(--font-display);
  font-size: var(--fs-h4);
  font-weight: 600;
  color: var(--ivory);
  transition: color var(--dur) var(--ease);
}
.acc-trigger:hover { color: var(--gold); }
.acc-icon {
  flex-shrink: 0;
  width: 30px; height: 30px;
  position: relative;
  border-radius: 50%;
  border: 1px solid var(--line-gold);
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease);
}
.acc-icon::before, .acc-icon::after {
  content: "";
  position: absolute;
  background: var(--gold);
  top: 50%; left: 50%;
  transition: transform var(--dur) var(--ease);
}
.acc-icon::before { width: 12px; height: 1.5px; transform: translate(-50%,-50%); }
.acc-icon::after { width: 1.5px; height: 12px; transform: translate(-50%,-50%); }
.acc-item.is-open .acc-icon { background: rgba(201,162,75,0.12); }
.acc-item.is-open .acc-icon::after { transform: translate(-50%,-50%) scaleY(0); }
.acc-panel {
  overflow: hidden;
  max-height: 0;
  transition: max-height var(--dur-slow) var(--ease-in-out);
}
.acc-panel-inner { padding: 0 0 1.5rem; color: var(--muted); max-width: 62ch; }

/* ---------------- Floating contact dock ---------------- */
.dock {
  position: fixed;
  right: clamp(0.9rem, 0.5rem + 1vw, 1.6rem);
  bottom: clamp(0.9rem, 0.5rem + 1vw, 1.6rem);
  z-index: var(--z-dock);
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}
.dock__btn {
  position: relative;
  width: 54px; height: 54px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  box-shadow: var(--shadow-md);
  transition: transform var(--dur) var(--ease-out);
}
.dock__btn svg { width: 26px; height: 26px; }
.dock__btn:hover { transform: scale(1.08); }
.dock__btn--call { background: var(--grad-gold); color: var(--on-gold); }
.dock__btn--zalo { background: var(--zalo); }
.dock__btn--mess { background: var(--messenger); }
.dock__btn::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid currentColor;
  opacity: 0.5;
  animation: ping 2.4s var(--ease-out) infinite;
}
.dock__btn--call::after { color: var(--gold); }
.dock__btn--zalo::after { color: var(--zalo); }
.dock__btn--mess::after { color: var(--messenger); }
@keyframes ping {
  0% { transform: scale(1); opacity: 0.5; }
  70%, 100% { transform: scale(1.6); opacity: 0; }
}
.dock__label {
  position: absolute;
  right: calc(100% + 12px);
  top: 50%;
  transform: translateY(-50%) translateX(8px);
  background: var(--surface-2);
  border: 1px solid var(--line-2);
  color: var(--ivory);
  font-size: var(--fs-xs);
  font-weight: 600;
  padding: 0.4rem 0.7rem;
  border-radius: var(--r-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease-out);
}
.dock__btn:hover .dock__label { opacity: 1; transform: translateY(-50%) translateX(0); }

/* Back to top */
.to-top {
  position: fixed;
  right: clamp(0.9rem, 0.5rem + 1vw, 1.6rem);
  bottom: calc(clamp(0.9rem, 0.5rem + 1vw, 1.6rem) + 3 * 54px + 3 * 0.7rem + 0.6rem);
  z-index: var(--z-dock);
  width: 46px; height: 46px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--surface-2);
  border: 1px solid var(--line-2);
  color: var(--gold);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--dur) var(--ease);
}
.to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { border-color: var(--line-gold); transform: translateY(-3px); }
.to-top svg { width: 20px; height: 20px; }

/* Sticky mobile CTA bar */
.mobile-cta {
  position: fixed;
  inset: auto 0 0 0;
  z-index: var(--z-dock);
  display: none;
  gap: 0.6rem;
  padding: 0.7rem;
  background: var(--scrim-bar);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-top: 1px solid var(--line);
}
.mobile-cta .btn { flex: 1; }
@media (max-width: 620px) {
  .mobile-cta { display: flex; }
  .dock { bottom: calc(64px + 0.9rem); }
  .to-top { bottom: calc(64px + 0.9rem + 3 * 54px + 3 * 0.7rem + 0.6rem); }
}

/* ---------------- Theme toggle ---------------- */
.theme-toggle {
  width: 42px; height: 42px;
  display: grid; place-items: center;
  border-radius: 50%;
  border: 1px solid var(--line-2);
  color: var(--gold);
  flex-shrink: 0;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), transform var(--dur) var(--ease-out);
}
.theme-toggle:hover { border-color: var(--line-gold); transform: rotate(18deg); }
.theme-toggle svg { width: 19px; height: 19px; }
.theme-toggle__sun { display: none; }
[data-theme="light"] .theme-toggle__moon { display: none; }
[data-theme="light"] .theme-toggle__sun { display: inline-block; }

/* ---------------- Language toggle ---------------- */
.lang-toggle {
  display: inline-flex; align-items: center; gap: 1px;
  padding: 0.45rem 0.7rem;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-2);
  font-size: var(--fs-xs); font-weight: 700; letter-spacing: 0.04em;
  color: var(--muted); flex-shrink: 0;
  transition: border-color var(--dur) var(--ease);
}
.lang-toggle:hover { border-color: var(--line-gold); }
.lang-toggle .sep { color: var(--muted-2); margin: 0 1px; font-weight: 400; }
html[lang="vi"] .lang-toggle [data-l="vi"],
html[lang="en"] .lang-toggle [data-l="en"] { color: var(--gold); }