:root {
  --bg: #2a0608;
  --surface: #ffffff;
  --ink: #2a1112;
  --muted: #7a6566;
  --line: #e7d2d2;
  --teal: #b01622;        /* màu nhấn chính (đỏ) */
  --red-deep: #7a0d12;
  --red-bright: #d32f2f;
  --gold: #f2c94c;
  --green: #c9a227;       /* viền vàng kim thay cho xanh */
  --amber: #d98324;
  --red: #b01622;
  --blue: #8a1b2a;
  --shadow: 0 18px 45px rgba(60, 5, 8, 0.35);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: Arial, "Helvetica Neue", sans-serif;
  background:
    linear-gradient(rgba(70, 8, 10, 0.82), rgba(40, 4, 6, 0.9)),
    url("https://hypeddit-gates-prod.s3.amazonaws.com/nt1v81_coverartmanual")
      center top / cover no-repeat fixed,
    #2a0608;
}

button,
input,
select {
  font: inherit;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px clamp(16px, 3vw, 40px);
  background: linear-gradient(135deg, #7a0d12, #b01622);
  color: #fff;
  border-bottom: 4px solid var(--gold);
}

.eyebrow {
  margin: 0 0 5px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-size: clamp(26px, 4vw, 44px);
  line-height: 1.05;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.home-link {
  display: inline-flex;
  align-items: center;
  height: 42px;
  padding: 0 14px;
  margin-right: 6px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
}

.home-link:hover {
  background: rgba(255, 255, 255, 0.24);
}

.icon-button {
  width: 42px;
  height: 42px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  font-size: 23px;
  line-height: 1;
  cursor: pointer;
}

.icon-button:hover {
  background: rgba(255, 255, 255, 0.22);
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  gap: 22px;
  max-width: 1460px;
  margin: 0 auto;
  padding: 22px clamp(14px, 3vw, 40px);
}

.map-panel,
.info-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.map-panel {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.toolbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 12px;
  padding: 16px;
  border-bottom: 1px solid var(--line);
}

.search-field,
.select-field {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.search-field input,
.select-field select {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0 12px;
  color: var(--ink);
  background: #fff;
}

.map-shell {
  position: relative;
  flex: 1;             /* lấp đầy chiều cao còn lại của map-panel (bỏ khoảng trắng) */
  min-height: 720px;   /* sàn tối thiểu khi panel thấp */
  overflow: hidden;
  background: #fffdfd;
}

.map-viewport {
  position: absolute;
  inset: 0;
  overflow: hidden;
  cursor: grab;
}

.map-viewport.dragging {
  cursor: grabbing;
}

.map-canvas {
  position: absolute;
  left: 50%;
  top: 50%;
  width: min(72vw, 620px);
  height: min(112vw, 930px);
  transform-origin: center center;
  touch-action: none;
}

/* Ảnh trống đồng làm nền — lớn hơn canvas để phủ trọn viewport,
   nằm trong canvas nên vẫn zoom/kéo cùng bản đồ, và ở dưới bản đồ (z-index -1) */
.map-canvas::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 200%;
  aspect-ratio: 1 / 1;
  transform: translate(-50%, -50%);
  background: url("../img/trong-dong-2.png") center / contain no-repeat;
  opacity: 0.28;
  pointer-events: none;
  z-index: -1;
}

/* ===== Bản đồ SVG tương tác ===== */
#mapCanvas svg {
  width: 100%;
  height: 100%;
  display: block;
  overflow: visible;
  filter: drop-shadow(0 18px 22px rgba(60, 5, 8, 0.4));
  user-select: none;
}

/* Ẩn tên tỉnh và các điểm đánh dấu (chấm/sao) có sẵn trong ảnh gốc */
#mapCanvas svg text,
#mapCanvas svg .cls-20 {
  display: none !important;
}

/* Các đường viền mảnh trang trí (biên giới/bờ biển) trong ảnh gốc */
#mapCanvas svg .cls-4 {
  fill: rgba(255, 255, 255, 0.1);
  pointer-events: none;
}

/* Mỗi tỉnh/thành */
.province {
  cursor: pointer;
  outline: none;
  transform-box: fill-box;
  transform-origin: center;
  transition: opacity 0.18s ease, transform 0.18s ease, filter 0.18s ease;
}

/* Quần đảo Hoàng Sa & Trường Sa: phóng to sẵn cho dễ nhìn */
.province[data-p="quan-dao-hoang-sa"],
.province[data-p="quan-dao-truong-sa"] {
  --base-scale: 2.4;
  transform: scale(var(--base-scale));
}

.province .p-area {
  fill: #c62828 !important;
  stroke: #f2c94c;
  stroke-width: 2.5px;
  transition: fill 0.18s ease, stroke 0.18s ease, stroke-width 0.18s ease;
}

/* Hover (hoặc focus) -> làm mờ các tỉnh còn lại */
#mapCanvas svg:has(.province.hovered, .province:focus-visible)
  .province:not(.hovered):not(:focus-visible) {
  opacity: 0.25;
}

/* Tỉnh/đảo đang hover: phóng to + tách ra + đổi màu (đảo và tỉnh quản lý cùng phản ứng) */
.province.hovered,
.province:focus-visible {
  transform: translate(var(--pop-x, 0px), var(--pop-y, 0px))
    scale(calc(var(--base-scale, 1) * 1.1));
  filter: drop-shadow(0 8px 10px rgba(60, 5, 8, 0.55));
}

.province.hovered .p-area,
.province:focus-visible .p-area {
  fill: #ff5252 !important;
  stroke: #ffffff;
  stroke-width: 4px;
}

/* Tỉnh đang được chọn */
.province.is-active .p-area {
  fill: #ff7043 !important;
  stroke: #ffffff;
  stroke-width: 4px;
}

/* Tỉnh bị lọc ra khỏi kết quả tìm kiếm/vùng */
.province.filtered-out {
  opacity: 0.1 !important;
  pointer-events: none;
}

/* Tooltip hiện tên tỉnh khi hover */
#provinceTooltip {
  position: fixed;
  z-index: 50;
  display: none;
  max-width: 220px;
  padding: 7px 11px;
  border-radius: 8px;
  background: var(--red-deep);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.3;
  box-shadow: 0 8px 24px rgba(60, 5, 8, 0.45);
  pointer-events: none;
}

.map-hint {
  position: absolute;
  left: 16px;
  bottom: 16px;
  padding: 8px 11px;
  border-radius: 8px;
  background: rgba(122, 13, 18, 0.85);
  color: #fff;
  font-size: 12px;
}

.info-panel {
  display: flex;
  flex-direction: column;
  max-height: 1100px;
  overflow: auto;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-bottom: 1px solid var(--line);
}

.summary-grid div {
  padding: 14px 10px;
  text-align: center;
}

.summary-grid div + div {
  border-left: 1px solid var(--line);
}

.summary-grid strong {
  display: block;
  color: var(--teal);
  font-size: 26px;
}

.summary-grid span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.province-detail {
  padding: 18px;
  border-bottom: 1px solid var(--line);
}

.province-detail h2 {
  margin-bottom: 8px;
  font-size: 24px;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 10px 0 14px;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  border-radius: 999px;
  padding: 0 10px;
  background: #fbe4e4;
  color: var(--red-deep);
  font-size: 12px;
  font-weight: 700;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.detail-grid div {
  min-height: 66px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fafb;
}

.detail-grid span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.detail-grid strong {
  display: block;
  margin-top: 4px;
  font-size: 15px;
}

.list-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 14px 18px 10px;
}

.list-header h2 {
  margin-bottom: 0;
  font-size: 18px;
}

.list-header span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.province-list {
  display: grid;
  gap: 8px;
  padding: 0 18px 18px;
}

.province-item {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 10px;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
  background: #fff;
  color: var(--ink);
  text-align: left;
  cursor: pointer;
}

.province-item:hover,
.province-item.active {
  border-color: var(--teal);
  background: #f0faf8;
}

.province-item strong,
.province-item span {
  display: block;
}

.province-item strong {
  font-size: 15px;
}

.province-item span {
  margin-top: 3px;
  color: var(--muted);
  font-size: 12px;
}

.province-item em {
  color: var(--teal);
  font-size: 12px;
  font-style: normal;
  font-weight: 700;
}

.content-band,
.faq,
.source-footer {
  max-width: 1460px;
  margin: 0 auto;
  padding: 0 clamp(14px, 3vw, 40px) 24px;
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.content-grid article,
.faq {
  color: #33434b;
}

.content-grid article,
.faq details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  padding: 18px;
}

.content-grid h2,
.faq h2 {
  color: var(--ink);
  font-size: 22px;
}

.faq details + details {
  margin-top: 10px;
}

.faq summary {
  cursor: pointer;
  color: var(--ink);
  font-weight: 700;
}

.faq p,
.content-grid p {
  margin-bottom: 0;
  line-height: 1.6;
}

.source-footer {
  color: var(--muted);
  font-size: 13px;
}

.source-footer {
  color: #f3d6d6;
}

.source-footer a {
  color: var(--gold);
  font-weight: 700;
}

/* ===== Phần lịch sử ===== */
.history {
  margin-top: 16px;
  border-top: 2px dashed var(--line);
  padding-top: 14px;
}

.history-summary {
  margin: 0 0 14px;
  padding: 12px 14px;
  border-left: 4px solid var(--red);
  border-radius: 0 8px 8px 0;
  background: #fdf1f1;
  color: #3a2122;
  line-height: 1.6;
  font-size: 14.5px;
}

.history-block {
  margin-bottom: 16px;
}

.history-block h3 {
  margin: 0 0 8px;
  color: var(--red-deep);
  font-size: 15px;
}

.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.timeline li {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 10px;
  align-items: start;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.tl-year {
  font-weight: 800;
  font-size: 12.5px;
  color: #fff;
  background: var(--red);
  padding: 3px 6px;
  border-radius: 6px;
  text-align: center;
  line-height: 1.3;
}

.tl-event {
  font-size: 13.5px;
  line-height: 1.5;
  color: #3a2122;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 5px 11px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 600;
  background: #fbe4e4;
  color: var(--red-deep);
  border: 1px solid #f3c9c9;
}

.chip-site {
  background: #fff5e0;
  color: #8a5a08;
  border-color: #f0dca6;
}

.history-empty {
  margin-top: 14px;
  color: var(--muted);
  font-size: 13.5px;
}

/* ===== Nội dung chi tiết (main-content) ===== */
.detail-band {
  max-width: 1460px;
  margin: 0 auto;
  padding: 0 clamp(14px, 3vw, 40px) 40px;
}

.province-content {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: clamp(20px, 3vw, 40px);
}

/* Lớp phủ "Vui lòng chờ" khi nội dung tỉnh/thành đang tải ảnh */
.pc-loading {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  background: rgba(255, 255, 255, 0.96);
  border-radius: 12px;
  transition: opacity 0.35s ease;
}

.pc-loading.is-hidden {
  opacity: 0;
  pointer-events: none;
}

.pc-loading-spinner {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 4px solid rgba(176, 22, 34, 0.2);
  border-top-color: var(--red);
  animation: ld-spin 0.8s linear infinite; /* keyframe ld-spin định nghĩa ở loader.css */
}

.pc-loading-text {
  margin: 0;
  color: var(--red-deep);
  font-weight: 700;
  font-size: 15px;
}

.pc-head {
  border-bottom: 2px solid var(--line);
  padding-bottom: 16px;
  margin-bottom: 22px;
}

.pc-eyebrow {
  margin: 0 0 4px;
  color: var(--red);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.pc-head h2 {
  margin: 0;
  font-size: clamp(26px, 4vw, 40px);
  color: var(--red-deep);
}

.pc-tagline {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: clamp(15px, 2vw, 18px);
  font-style: italic;
}

/* Bộ ảnh */
.pc-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 26px;
}

.pc-photo {
  margin: 0;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #fff;
}

.pc-photo img {
  display: block;
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.pc-photo figcaption {
  padding: 8px 10px;
  font-size: 13px;
  font-weight: 700;
  color: var(--red-deep);
  background: #fdf1f1;
}

/* Ảnh chưa có -> khối placeholder */
.pc-photo.missing img {
  display: none;
}

.pc-photo.missing {
  position: relative;
}

.pc-photo.missing::before {
  content: "🖼️ Ảnh minh họa";
  display: flex;
  align-items: center;
  justify-content: center;
  height: 220px;
  background:
    linear-gradient(rgba(255, 250, 250, 0.85), rgba(255, 250, 250, 0.85)),
    url("../img/trong-dong-2.png") center / 150% no-repeat,
    #fbeeee;
  color: var(--red);
  font-weight: 700;
  font-size: 14px;
}

/* Khối nội dung */
.pc-block {
  margin-top: 26px;
}

.pc-block > h3 {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-size: 20px;
  color: var(--red-deep);
}

.pc-block > h3::before {
  content: "";
  width: 22px;
  height: 4px;
  border-radius: 4px;
  background: var(--gold);
}

.pc-block p {
  margin: 0 0 12px;
  line-height: 1.85;
  font-size: 15.5px;
  color: #34232a;
}

.pc-sections {
  display: grid;
  gap: 20px;
}

.pc-section {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--red);
  border-radius: 0 10px 10px 0;
  background: #fffafa;
}

.pc-section h3 {
  margin: 0 0 8px;
  font-size: 17px;
  color: var(--red);
}

.pc-section p:last-child {
  margin-bottom: 0;
}

.pc-influence {
  padding: 18px 20px;
  border-radius: 10px;
  background: #fdf1f1;
  border: 1px solid #f3c9c9;
}

.pc-influence p:last-child {
  margin-bottom: 0;
}

.pc-empty {
  padding: 24px;
  border-radius: 10px;
  background: #fffafa;
  border: 1px dashed var(--line);
  color: var(--muted);
  line-height: 1.7;
}

@media (max-width: 760px) {
  .pc-gallery {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 1020px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .info-panel {
    max-height: none;
  }
}

@media (max-width: 680px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .toolbar,
  .content-grid {
    grid-template-columns: 1fr;
  }

  .map-shell {
    min-height: 600px;
  }

  .map-canvas {
    width: 500px;
    height: 760px;
  }

  .province-pin {
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
  }
}