/*
 * Theme mặc định: SÁNG (light). Bộ biến giao diện TỐI (dark) vẫn được
 * giữ nguyên bên dưới trong `:root[data-theme="dark"]` — muốn đổi lại
 * giao diện tối, chỉ cần thêm data-theme="dark" vào thẻ <html> của view.
 */
:root {
  color-scheme: light;
  --bg-top: #f0fdf4;
  --bg-bottom: #ffffff;
  --bg: #ffffff;
  --bg-elevated: #ffffff;
  --border: #e5e7eb;
  --input-bg: #ffffff;
  --input-border: #d1d5db;
  --label-color: #374151;
  --text: #111827;
  --text-muted: #6b7280;
  --accent: #16a34a;
  --accent-hover: #15803d;
  --header-bg: rgba(255, 255, 255, 0.8);
  --toggle-hover-bg: #f3f4f6;
  --error-bg: #fef2f2;
  --error-text: #b91c1c;
  --highlight-bg: #f0fdf4;
  --card-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg-top: #111827;
  --bg-bottom: #030712;
  --bg: #030712;
  --bg-elevated: #111827;
  --border: #1f2937;
  --input-bg: #1f2937;
  --input-border: #374151;
  --label-color: #d1d5db;
  --text: #f3f4f6;
  --text-muted: #9ca3af;
  --accent: #16a34a;
  --accent-hover: #15803d;
  --header-bg: rgba(3, 7, 18, 0.8);
  --toggle-hover-bg: #111827;
  --error-bg: #450a0a;
  --error-text: #fca5a5;
  --highlight-bg: #0f2419;
  --card-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.5);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: 'Manrope', system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: linear-gradient(to bottom, var(--bg-top), var(--bg-bottom));
  color: var(--text);
}

.page-content {
  flex: 1;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 2.5rem 1.5rem;
}

@media (max-width: 640px) {
  .page-content { padding: 1.5rem 0.75rem; }
}

.page-inner {
  width: 100%;
  max-width: 420px;
}

.page-inner-wide {
  max-width: 720px;
}

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: var(--card-shadow);
}

@media (min-width: 1024px) {
  .card { padding: 2rem; }
}

@media (max-width: 640px) {
  .card { padding: 1.25rem; border-radius: 0.75rem; }
}

h1 {
  font-size: 1.5rem;
  color: var(--text);
  margin-bottom: 0.5rem;
  text-align: center;
}

.subtitle {
  font-size: 0.9rem;
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 1.5rem;
}

form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.field-group {
  display: flex;
  gap: 0.75rem;
}

.field {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

label {
  font-size: 0.8rem;
  color: var(--label-color);
  font-weight: 600;
}

.radio-group {
  display: flex;
  gap: 1.5rem;
}

.radio-option {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 1rem;
  font-weight: 400;
  color: var(--text);
  cursor: pointer;
}

.radio-option input[type="radio"] {
  accent-color: var(--accent);
  width: 1rem;
  height: 1rem;
  cursor: pointer;
}

input[type="text"],
input[type="password"],
select,
textarea {
  padding: 0.6rem 0.5rem;
  border: 1px solid var(--input-border);
  border-radius: 0.5rem;
  font-size: 1rem;
  width: 100%;
  background: var(--input-bg);
  color: var(--text);
  font-family: inherit;
  resize: vertical;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

input[type="text"]:focus,
input[type="password"]:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.2);
}

select {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  padding-right: 2.25rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16' fill='none' stroke='%236b7280' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 6l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 0.9rem;
}

:root[data-theme="dark"] select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16' fill='none' stroke='%239ca3af' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 6l4 4 4-4'/%3E%3C/svg%3E");
}

button[type="submit"] {
  width: 100%;
  padding: 0.75rem;
  border: none;
  border-radius: 0.5rem;
  background: var(--accent);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease;
  margin-top: 0.5rem;
}

button[type="submit"]:hover { background: var(--accent-hover); }

.info-row {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding: 0.85rem 1rem;
  border-radius: 0.65rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  margin-bottom: 0.75rem;
}

.info-row.highlight {
  background: var(--highlight-bg);
  border: 1px solid var(--accent);
}

.info-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.info-value {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
}

.error-box {
  margin-top: 0.5rem;
  margin-bottom: 1.25rem;
  padding: 1rem;
  border-radius: 0.75rem;
  background: var(--error-bg);
  color: var(--error-text);
  text-align: center;
}

.back-link {
  display: inline-block;
  margin-top: 0.75rem;
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
  font-size: 0.9rem;
}

.back-link:hover { text-decoration: underline; color: var(--accent-hover); }

.laso-table { width: 100%; border-collapse: collapse; }
.laso-table th, .laso-table td {
  padding: 0.6rem 0.5rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  font-size: 0.9rem;
}
.laso-table th {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.laso-table tr:last-child td { border-bottom: none; }
.laso-table a { color: var(--text); text-decoration: none; font-weight: 500; }
.laso-table a:hover { color: var(--accent); }

.laso-save-box { margin-top: 1.5rem; }
.laso-save-form {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.laso-save-form label { white-space: nowrap; margin: 0; font-size: 1.05rem; }
.laso-save-form input[type="text"] {
  width: auto;
  flex: 1;
  min-width: 160px;
}
.laso-save-form button[type="submit"] {
  width: auto;
  margin-top: 0;
  padding: 0.6rem 1.25rem;
}
.laso-save-form button[type="submit"]:disabled {
  background: var(--border);
  color: var(--text-muted);
  cursor: default;
}

.laso-saved-row {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.laso-saved-row span { color: var(--text); }

button.laso-delete-link {
  display: inline;
  width: auto;
  background: none;
  border: none;
  padding: 0;
  margin: 0;
  border-radius: 0;
  color: var(--error-text);
  font-family: inherit;
  font-size: inherit;
  font-weight: 600;
  line-height: inherit;
  vertical-align: baseline;
  text-decoration: none;
  cursor: pointer;
}
button.laso-delete-link:hover { background: none; text-decoration: underline; }
button.laso-delete-link:disabled { color: var(--text-muted); cursor: default; text-decoration: none; }

.site-header {
  background: var(--header-bg);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.site-header-inner {
  max-width: 1120px;
  margin: 0 auto;
  height: 4rem;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
}

@media (min-width: 1024px) {
  .site-header-inner { height: 4.5rem; }
}

.site-logo {
  display: flex;
  align-items: center;
  line-height: 0;
  flex-shrink: 0;
}

.site-primary-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  min-width: 0;
}

.site-nav {
  display: none;
  align-items: center;
  gap: 1.25rem;
  margin-left: auto;
}

.site-nav-link {
  display: inline-block;
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.9rem;
  text-decoration: none;
  cursor: pointer;
  transition: color 0.15s ease;
}

.site-nav-link:hover { color: var(--text); }

.site-nav-username {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.9rem;
}

.site-mobile-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  border-radius: 0.5rem;
  padding: 0.5rem;
  color: var(--text-muted);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: background 0.15s ease, color 0.15s ease;
  margin-left: auto;
}

@media (hover: hover) {
  .site-mobile-toggle:hover {
    background: var(--toggle-hover-bg);
    color: var(--text);
  }
}

.site-mobile-toggle-icon {
  width: 1.5rem;
  height: 1.5rem;
}

.site-mobile-nav {
  display: none;
  flex-direction: column;
  padding: 1rem;
  background: var(--bg);
  border-top: 1px solid var(--border);
}

.site-mobile-nav.open {
  display: flex;
}

.site-mobile-nav > * + * {
  border-top: 1px solid var(--border);
}

.site-mobile-nav .site-nav-link {
  display: block;
  width: 100%;
  padding: 0.75rem 0;
  text-align: left;
  color: var(--text);
  font-size: 1rem;
  font-weight: 500;
}

.site-mobile-nav .site-nav-link:hover {
  color: var(--text);
}

.site-mobile-nav .site-nav-username {
  display: block;
  padding: 0.75rem 0 0;
  font-size: 0.9rem;
}

@media (min-width: 1024px) {
  .site-nav { display: flex; }
  .site-mobile-toggle { display: none; }
  .site-mobile-nav { display: none !important; }
}

.laso-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(4, 1fr);
  aspect-ratio: 3 / 4;
  gap: 0;
  background: #000;
  border: 1px solid #000;
  font-family: 'Roboto Condensed', sans-serif;
  font-size: 0.85rem;
  color: #000;
}

@media (max-width: 640px) {
  .laso-grid { margin-left: -0.375rem; margin-right: -0.375rem; }
}

.laso-cell {
  background: #f1ece3;
  border: 1px solid #000;
  padding: 0.6rem 0.15rem;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  transition: background 0.15s ease, box-shadow 0.15s ease;
}

.laso-cell[data-chi-index],
.laso-cell[data-tamhop-reset] {
  cursor: pointer;
}

.laso-cell.is-tamhop {
  position: relative;
  z-index: 3;
  background: #fffedc;
  box-shadow: 0 0 10px 3px rgba(218, 193, 86, 0.55);
}

.laso-tamhop-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
  overflow: visible;
}

.laso-tamhop-line {
  stroke: #16a34a;
  stroke-width: 1;
  opacity: 0.6;
  vector-effect: non-scaling-stroke;
}

.laso-row-top,
.laso-row-bottom {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: start;
}

.laso-row-top > :first-child,
.laso-row-bottom > :first-child {
  justify-self: start;
}

.laso-row-top > :nth-child(2),
.laso-row-bottom > :nth-child(2) {
  justify-self: center;
  text-align: center;
}

.laso-row-top > :last-child,
.laso-row-bottom > :last-child {
  justify-self: end;
  text-align: right;
}

.laso-can-cung {
  font-weight: 700;
}

.laso-ten-cung {
  font-weight: 700;
  text-transform: uppercase;
}

.laso-daihan {
  font-weight: 700;
}

.laso-chinhtinh {
  text-align: center;
  font-weight: 700;
  margin: 0.15rem 0;
}

.laso-row-mid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  flex: 1;
  overflow: hidden;
}

.laso-col-tot { text-align: left; }
.laso-col-xau { text-align: left; }

.laso-trangsinh {
  font-weight: 700;
}

.laso-sao {
  line-height: 1.3;
}

.laso-sao-chinh {
  font-size: 1rem;
}

.laso-boundary-bar {
  position: absolute;
  width: 32px;
  height: 1rem;
  transform: translate(-50%, -50%);
  background: #000;
  color: #fff;
  line-height: 1.3;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 4;
}

.laso-boundary-bar.is-merged {
  width: 70px;
}

.laso-center {
  grid-row: 2 / 4;
  grid-column: 2 / 4;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 0.3rem;
  font-size: 1rem;
  color: #1f2937;
}

.laso-title {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.laso-info-table {
  border-collapse: collapse;
}

.laso-info-table td {
  padding: 0.05rem 0.25rem;
  white-space: nowrap;
}

.laso-info-label {
  font-weight: 600;
  text-align: right;
}

@media (max-width: 480px) {
  .laso-title { font-size: 0.9rem; }
  .laso-center { font-size: 0.65rem; }
  .laso-grid { font-size: 0.52rem; }
  .laso-grid, .laso-cell { border-width: 0.7px; }
  .laso-sao-chinh { font-size: 0.65rem; }
  .laso-boundary-bar { width: 20px; height: 10px; }
  .laso-boundary-bar.is-merged { width: 45px; }
  .laso-cell { padding: 0.3rem 0.1rem; }
  
}
