/* ============================================================
   GLOBAL SEARCH POPUP (Ctrl+K) — Spotlight / Raycast style
   ============================================================ */

/* ---------- Overlay: backdrop blur animate + fade ---------- */
.gs-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(2, 6, 23, 0);
  backdrop-filter: blur(0px);
  -webkit-backdrop-filter: blur(0px);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 10vh 1rem 2rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 350ms ease;
  /* bỏ transition background + backdrop-filter → tránh giật */
}

.gs-overlay.active {
  opacity: 1;
  pointer-events: auto;
  background: rgba(2, 6, 23, 0.65);
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
}

/* ---------- Panel: spring scale + translate ---------- */
.gs-panel {
  width: 100%;
  max-width: 640px;
  background: var(--glass-bg, rgba(15, 23, 42, 0.85));
  backdrop-filter: blur(28px) saturate(180%);
  -webkit-backdrop-filter: blur(28px) saturate(180%);
  border: 1px solid var(--glass-border, rgba(255, 255, 255, 0.15));
  border-radius: 20px;
  box-shadow:
    0 25px 70px -20px rgba(0, 0, 0, 0.8),
    0 0 0 1px rgba(255, 255, 255, 0.04),
    inset 0 1px 0 0 rgba(255, 255, 255, 0.08);
  overflow: hidden;
  opacity: 0;
  transform: scale(0.88) translateY(-8px);
  transform-origin: top center;
  filter: blur(6px);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  transition:
    opacity 620ms cubic-bezier(0.32, 0.72, 0, 1),
    transform 800ms cubic-bezier(0.32, 0.72, 0, 1),
    filter 620ms cubic-bezier(0.32, 0.72, 0, 1);
  will-change: opacity, transform, filter;
}

.gs-overlay.active .gs-panel {
  opacity: 1;
  transform: scale(1) translateY(0);
  filter: blur(0);
}

/* Khung trước — ruột sau: nội dung delay 200ms để panel morph xong */
.gs-panel > * {
  opacity: 0;
  transform: translateY(8px);
  transition:
    opacity 500ms cubic-bezier(0.32, 0.72, 0, 1) 200ms,
    transform 500ms cubic-bezier(0.32, 0.72, 0, 1) 200ms;
}

.gs-overlay.active .gs-panel > * {
  opacity: 1;
  transform: translateY(0);
}

/* Viền sáng mỏng quanh panel — tinh tế */
.gs-panel::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg,
      rgba(6, 214, 240, 0.25) 0%,
      transparent 35%,
      transparent 65%,
      rgba(147, 51, 234, 0.25) 100%);
  -webkit-mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0;
  transition: opacity 400ms ease;
}

.gs-overlay.active .gs-panel::before {
  opacity: 1;
}

/* ---------- Input row ---------- */
.gs-input-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 15px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  position: relative;
}

.gs-input-row svg {
  width: 18px;
  height: 18px;
  color: #64748b;
  flex-shrink: 0;
  transition: color 220ms ease, transform 220ms ease;
}

.gs-overlay.active .gs-input-row svg {
  animation: gsIconIn 700ms cubic-bezier(0.32, 0.72, 0, 1) 120ms both;
}

@keyframes gsIconIn {
  0%   { opacity: 0; transform: scale(0.7); }
  100% { opacity: 1; transform: scale(1); }
}

/* Khi focus input → icon sáng lên */
.gs-input-row:focus-within svg {
  color: var(--c-action, #06d6f0);
  transform: scale(1.08);
}

.gs-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: #e2e8f0;
  font-size: 15px;
  font-family: inherit;
  letter-spacing: 0.01em;
}

.gs-input::placeholder {
  color: #64748b;
  transition: color 200ms ease;
}

.gs-input:focus::placeholder {
  color: #475569;
}

/* Có chữ → input chữ sáng hơn */
.gs-input:not(:placeholder-shown) {
  color: #f1f5f9;
}

.gs-kbd {
  font-size: 10px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #94a3b8;
  flex-shrink: 0;
  letter-spacing: 0.05em;
  transition: background 200ms ease, color 200ms ease;
}

.gs-input-row:focus-within .gs-kbd {
  background: rgba(6, 182, 212, 0.12);
  color: #22d3ee;
  border-color: rgba(6, 182, 212, 0.3);
}

/* ---------- Results container: animate height mượt ---------- */
.gs-results {
  overflow: hidden;   /* cần để height transition hoạt động */
  transition: height 520ms cubic-bezier(0.32, 0.72, 0, 1);
  will-change: height;
}

/* Wrapper bên trong — đây mới là chỗ có scrollbar thật */
.gs-results-inner {
  max-height: 52vh;
  overflow-y: auto;
  padding: 8px;
  scroll-behavior: smooth;
}

.gs-results-inner::-webkit-scrollbar { width: 6px; }
.gs-results-inner::-webkit-scrollbar-track { background: transparent; }
.gs-results-inner::-webkit-scrollbar-thumb {
  background: rgba(148, 163, 184, 0.25);
  border-radius: 99px;
}
.gs-results-inner::-webkit-scrollbar-thumb:hover {
  background: rgba(148, 163, 184, 0.45);
}

/* ---------- Group title ---------- */
.gs-group-title {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #64748b;
  padding: 12px 14px 6px;
  opacity: 0;
  animation: gsGroupIn 600ms ease forwards;
}

@keyframes gsGroupIn {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- Item ---------- */
.gs-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 11px 14px;
  border-radius: 12px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  opacity: 0;
  transform: translateY(10px);
  filter: blur(3px);
  animation: gsItemIn 720ms cubic-bezier(0.32, 0.72, 0, 1) forwards;
  animation-delay: calc(var(--i, 0) * 70ms + 200ms);
  transition:
    background 180ms ease,
    transform 180ms ease;
}

@keyframes gsItemIn {
  from {
    opacity: 0;
    transform: translateY(10px);
    filter: blur(3px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
  }
}

/* Selected state — viền trái phát sáng + gradient */
.gs-item.selected {
  background: linear-gradient(90deg,
      rgba(6, 182, 212, 0.14) 0%,
      rgba(147, 51, 234, 0.08) 100%);
  transform: translateX(2px);
}

.gs-item.selected::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 60%;
  border-radius: 0 3px 3px 0;
  background: linear-gradient(180deg, #06d6f0, #9333ea);
  box-shadow: 0 0 12px rgba(6, 214, 240, 0.6);
  animation: gsBarIn 500ms cubic-bezier(0.32, 0.72, 0, 1) both;
}

@keyframes gsBarIn {
  from {
    height: 0;
    opacity: 0;
  }

  to {
    height: 60%;
    opacity: 1;
  }
}

.gs-item:hover:not(.selected) {
  background: rgba(255, 255, 255, 0.04);
}

.gs-item.selected .gs-item-title {
  color: #22d3ee;
  transition: color 200ms ease;
}

.gs-item.selected .gs-item-icon {
  background: rgba(6, 182, 212, 0.18);
  border-color: rgba(6, 182, 212, 0.4);
  color: #22d3ee;
  transform: scale(1.05);
}

/* Icon box */
.gs-item-icon {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: #94a3b8;
  transition:
    background 200ms ease,
    border-color 200ms ease,
    color 200ms ease,
    transform 220ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

.gs-item-icon svg {
  width: 15px;
  height: 15px;
}

.gs-item-body {
  flex: 1;
  min-width: 0;
}

.gs-item-title {
  color: #e2e8f0;
  font-size: 13.5px;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: color 200ms ease;
}

.gs-item-sub {
  color: #64748b;
  font-size: 11.5px;
  margin-top: 2px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: color 200ms ease;
}

.gs-item.selected .gs-item-sub {
  color: #94a3b8;
}

/* ---------- Empty / Loading state ---------- */
.gs-empty {
  padding: 40px 16px;
  text-align: center;
  color: #64748b;
  font-size: 13px;
  opacity: 0;
  animation: gsEmptyIn 680ms cubic-bezier(0.22, 1, 0.36, 1) forwards;
  animation-delay: 160ms;
}

@keyframes gsEmptyIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.gs-empty svg {
  width: 36px;
  height: 36px;
  margin: 0 auto 12px;
  opacity: 0.4;
  animation: gsEmptyPulse 2.4s ease-in-out infinite;
}

@keyframes gsEmptyPulse {

  0%,
  100% {
    opacity: 0.3;
    transform: scale(1);
  }

  50% {
    opacity: 0.55;
    transform: scale(1.06);
  }
}

.gs-empty p+p {
  font-size: 11px;
  margin-top: 8px;
  opacity: 0.7;
}

/* Loading spinner cho "Đang tìm..." */
.gs-results>.gs-empty:only-child {
  position: relative;
}

/* ---------- Trigger button (nút mở search) ---------- */
.gs-trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #94a3b8;
  font-size: 12px;
  cursor: pointer;
  transition:
    background 200ms ease,
    color 200ms ease,
    border-color 200ms ease,
    transform 220ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

.gs-trigger:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #e2e8f0;
  border-color: rgba(255, 255, 255, 0.18);
  transform: translateY(-1px);
}

.gs-trigger:active {
  transform: translateY(0) scale(0.96);
}

.gs-trigger svg {
  width: 14px;
  height: 14px;
  transition: transform 260ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

.gs-trigger:hover svg {
  transform: scale(1.15);
}

/* ---------- Mobile ---------- */
@media (max-width: 640px) {
  .gs-overlay {
    padding: 6vh 0.75rem 1rem;
  }

  .gs-panel {
    max-width: 100%;
    border-radius: 16px;
  }

  .gs-input {
    font-size: 16px;
    /* tránh zoom iOS */
  }

  .gs-trigger span:not(.gs-kbd) {
    display: none;
  }

  .gs-trigger {
    padding: 6px 8px;
  }

  .gs-kbd {
    display: none;
  }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {

  .gs-overlay,
  .gs-panel,
  .gs-item,
  .gs-group-title,
  .gs-empty,
  .gs-input-row svg,
  .gs-trigger {
    animation: none !important;
    transition: none !important;
  }

  .gs-item {
    opacity: 1;
    transform: none;
  }

  .gs-empty {
    opacity: 1;
  }

  .gs-panel {
    transform: none;
  }

  .gs-results {
    transition: none;
  }
}