/* USPBF marketing site — slate + sky + gold (Pro Billiards family) */
:root {
  --uspbf-bg-deep: #0f172a;
  --uspbf-bg-mid: #1e293b;
  --uspbf-surface: rgba(30, 41, 59, 0.85);
  --uspbf-border: rgba(71, 85, 105, 0.5);
  --uspbf-accent-sky: #38bdf8;
  --uspbf-accent-sky-strong: #0ea5e9;
  --uspbf-accent-gold: #c9a227;
  --uspbf-text: #e2e8f0;
  --uspbf-muted: #94a3b8;
  --uspbf-danger: #f87171;
  /* Minimum readable size: 1.0625rem = 17px when html is browser default 16px. */
  --uspbf-text-min: 1.0625rem;
  --uspbf-text-base: var(--uspbf-text-min);
  --uspbf-text-body: var(--uspbf-text-min);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: var(--uspbf-text-base);
  background: linear-gradient(135deg, var(--uspbf-bg-deep) 0%, var(--uspbf-bg-mid) 100%);
  color: var(--uspbf-text);
  line-height: 1.55;
}

a {
  color: var(--uspbf-accent-sky);
  text-decoration: none;
}
a:hover {
  color: var(--uspbf-accent-sky-strong);
  text-decoration: underline;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--uspbf-border);
  background: rgba(15, 23, 42, 0.92);
  backdrop-filter: blur(10px);
}

.site-header__inner {
  max-width: 72rem;
  margin: 0 auto;
  padding: 0.75rem 1.25rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.site-brand {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}
.site-brand__org {
  font-size: var(--uspbf-text-body);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--uspbf-accent-gold);
  font-weight: 600;
}
.site-brand__name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--uspbf-text);
  text-decoration: none;
}
.site-brand__name:hover {
  color: var(--uspbf-accent-sky);
  text-decoration: none;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  align-items: center;
}
.site-nav a {
  font-size: var(--uspbf-text-body);
  font-weight: 500;
  color: var(--uspbf-muted);
  text-decoration: none;
}
.site-nav a:hover,
.site-nav a.is-active {
  color: var(--uspbf-accent-sky);
  text-decoration: none;
}

.site-main {
  max-width: 72rem;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
}

.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--uspbf-border);
  padding: 1.5rem 1.25rem;
  background: rgba(15, 23, 42, 0.6);
  font-size: var(--uspbf-text-body);
  color: var(--uspbf-muted);
  text-align: center;
}

.site-footer a {
  color: var(--uspbf-accent-sky);
}

.hero {
  padding: 2rem 0 2.5rem;
  border-bottom: 1px solid var(--uspbf-border);
  margin-bottom: 2rem;
}
.hero h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.15;
}
.hero .lead {
  margin: 0 0 1.25rem;
  color: var(--uspbf-muted);
  font-size: 1.125rem;
  max-width: 40rem;
}
.hero .hero__sublead {
  margin: 0;
  max-width: 48rem;
  font-size: 1.0625rem;
  line-height: 1.6;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 1.1rem;
  border-radius: 0.5rem;
  font-weight: 600;
  font-size: var(--uspbf-text-body);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
}
.btn:hover {
  text-decoration: none;
}
.btn--primary {
  background: var(--uspbf-accent-sky-strong);
  color: #0f172a;
}
.btn--primary:hover {
  background: var(--uspbf-accent-sky);
  color: #0f172a;
}
.btn--ghost {
  background: transparent;
  border-color: var(--uspbf-border);
  color: var(--uspbf-text);
}
.btn--ghost:hover {
  border-color: var(--uspbf-accent-sky);
  color: var(--uspbf-accent-sky);
}

.badge {
  display: inline-block;
  font-size: var(--uspbf-text-body);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;
  background: rgba(201, 162, 39, 0.15);
  color: var(--uspbf-accent-gold);
  border: 1px solid rgba(201, 162, 39, 0.35);
}

.card-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fill, minmax(16rem, 1fr));
}

.card {
  background: var(--uspbf-surface);
  border: 1px solid var(--uspbf-border);
  border-radius: 0.75rem;
  padding: 1.25rem;
  border-top: 3px solid var(--uspbf-accent-sky-strong);
}
.card h2,
.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.125rem;
}
.card p {
  margin: 0;
  font-size: var(--uspbf-text-body);
  color: var(--uspbf-muted);
}

.section-title {
  font-size: 1.35rem;
  font-weight: 600;
  margin: 0 0 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.table-wrap {
  overflow-x: auto;
  border-radius: 0.5rem;
  border: 1px solid var(--uspbf-border);
  background: var(--uspbf-surface);
}
table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--uspbf-text-body);
}
.data-table th,
.data-table td {
  padding: 0.6rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--uspbf-border);
}
.data-table th {
  background: rgba(15, 23, 42, 0.5);
  color: var(--uspbf-muted);
  font-weight: 600;
  font-size: var(--uspbf-text-body);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.data-table tr:last-child td {
  border-bottom: none;
}
.data-table tbody tr:hover td {
  background: rgba(56, 189, 248, 0.06);
}

.form-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: flex-end;
  margin-bottom: 1rem;
}
label {
  font-size: var(--uspbf-text-body);
  color: var(--uspbf-muted);
  display: block;
  margin-bottom: 0.25rem;
}
select,
input[type="search"],
input[type="text"] {
  font-size: var(--uspbf-text-body);
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--uspbf-border);
  color: var(--uspbf-text);
  padding: 0.45rem 0.65rem;
  border-radius: 0.375rem;
  min-width: 10rem;
}
select:focus,
input:focus {
  outline: 2px solid var(--uspbf-accent-sky-strong);
  outline-offset: 1px;
}

/* Searchable <select> combobox (see /js/searchable-select.js) */
.searchable-select-wrap {
  position: relative;
  display: inline-block;
  min-width: 12rem;
  max-width: 22rem;
  vertical-align: bottom;
}
.searchable-select-wrap .uspbf-select-native {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
  clip-path: inset(50%) !important;
}
.searchable-select__input {
  width: 100%;
  min-width: 12rem;
  box-sizing: border-box;
}
.searchable-select__list {
  position: absolute;
  left: 0;
  right: 0;
  top: calc(100% + 2px);
  z-index: 100;
  max-height: 14rem;
  overflow-y: auto;
  margin: 0;
  padding: 0.25rem 0;
  list-style: none;
  background: rgba(15, 23, 42, 0.98);
  border: 1px solid var(--uspbf-border);
  border-radius: 0.375rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}
.searchable-select__option {
  padding: 0.45rem 0.65rem;
  cursor: pointer;
  font-size: var(--uspbf-text-body);
  color: var(--uspbf-text);
}
.searchable-select__option:hover,
.searchable-select__option.is-active {
  background: rgba(56, 189, 248, 0.15);
  color: var(--uspbf-text);
}
.searchable-select__empty {
  padding: 0.45rem 0.65rem;
  color: var(--uspbf-muted);
  font-size: var(--uspbf-text-body);
}

.msg-error {
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  background: rgba(127, 29, 29, 0.35);
  border: 1px solid rgba(248, 113, 113, 0.4);
  color: #fecaca;
  font-size: var(--uspbf-text-body);
  margin: 1rem 0;
}
.msg-muted {
  color: var(--uspbf-muted);
  font-size: var(--uspbf-text-body);
}

.pagination {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  margin-top: 1rem;
  flex-wrap: wrap;
}

.rules-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.rules-list li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--uspbf-border);
}
.rules-list li:last-child {
  border-bottom: none;
}

.expandable summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--uspbf-accent-sky);
  list-style: none;
}
.expandable summary::-webkit-details-marker {
  display: none;
}

/* Homepage news + other sections */
.capabilities-section {
  margin-bottom: 2.5rem;
}
.capabilities-section__intro {
  margin: -0.35rem 0 1rem;
  max-width: 48rem;
}
.capabilities-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(17rem, 1fr));
  gap: 1rem;
}
.capability-item {
  margin: 0;
  display: flex;
  flex-direction: column;
}
.capability-item__title {
  margin: 0 0 0.5rem;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--uspbf-text);
  line-height: 1.3;
}
.capability-item__desc {
  margin: 0;
  flex: 1;
  font-size: var(--uspbf-text-body);
  line-height: 1.5;
}

.news-section__intro {
  margin: -0.35rem 0 1rem;
}

.news-section .news-item {
  margin-bottom: 1rem;
}
.news-section .news-item:last-child {
  margin-bottom: 0;
}

.news-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.75rem;
  margin-bottom: 0.35rem;
}

.news-source {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.15rem 0.45rem;
  border-radius: 0.25rem;
  background: rgba(56, 189, 248, 0.12);
  color: var(--uspbf-accent-sky);
  border: 1px solid rgba(56, 189, 248, 0.25);
}

.news-item__date {
  font-size: 0.875rem;
  color: var(--uspbf-muted);
}

.news-item__title {
  margin: 0 0 0.35rem;
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.3;
}
.news-item__title a {
  color: var(--uspbf-text);
  text-decoration: none;
}
.news-item__title a:hover {
  color: var(--uspbf-accent-sky);
  text-decoration: underline;
}

.news-item__summary {
  margin: 0;
  font-size: var(--uspbf-text-body);
  line-height: 1.5;
}

@media (max-width: 640px) {
  .site-nav {
    width: 100%;
    justify-content: flex-start;
  }
}

/* Homepage — veteran recognition (fixed below sticky header) */
.veteran-flags {
  position: fixed;
  left: 0.75rem;
  top: 4.85rem;
  z-index: 45;
  max-width: min(11.5rem, calc(100vw - 1.5rem));
  pointer-events: none;
  user-select: none;
}
.veteran-flags__row {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  gap: 0.45rem;
}
.veteran-flags__img {
  height: 2.15rem;
  width: auto;
  border-radius: 0.2rem;
  border: 1px solid rgba(255, 255, 255, 0.22);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.35);
}
@media (min-width: 640px) {
  .veteran-flags {
    top: 5rem;
    max-width: 13.5rem;
  }
  .veteran-flags__img {
    height: 2.45rem;
  }
}
.veteran-flags__credit {
  margin: 0.4rem 0 0;
  font-size: 0.625rem;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--uspbf-text);
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.45);
}
@media (min-width: 640px) {
  .veteran-flags__credit {
    font-size: 0.6875rem;
  }
}

/* --- ALFa AI demo dock (homepage) — mirrors Pro Billiards Software cyan accent --- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.alfa-demo {
  position: fixed;
  bottom: 0;
  right: 0;
  z-index: 85;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.5rem;
  padding: 0 1rem 1rem;
  padding-bottom: calc(1rem + env(safe-area-inset-bottom, 0));
  padding-right: calc(1rem + env(safe-area-inset-right, 0));
  pointer-events: none;
}
.alfa-demo > * {
  pointer-events: auto;
}

.alfa-demo__fab {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border-radius: 9999px;
  border: 1px solid rgba(34, 211, 238, 0.45);
  background: rgba(15, 23, 42, 0.96);
  color: #67e8f9;
  padding: 0.35rem 1rem 0.35rem 0.35rem;
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  box-shadow: 0 10px 28px rgba(8, 47, 73, 0.45);
  transition: border-color 0.15s ease, background 0.15s ease;
}
.alfa-demo__fab:hover {
  border-color: rgba(34, 211, 238, 0.75);
  background: rgba(15, 23, 42, 0.99);
}
.alfa-demo__fab-avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 9999px;
  background: linear-gradient(145deg, #0e7490 0%, #155e75 100%);
  color: #ecfeff;
  font-weight: 800;
  font-size: 1rem;
  box-shadow: 0 0 0 2px rgba(34, 211, 238, 0.45);
}
.alfa-demo__fab-label {
  padding-right: 0.25rem;
}

.alfa-demo__panel {
  width: min(calc(100vw - 2rem), 22rem);
  max-height: min(70dvh, 28rem);
  display: flex;
  flex-direction: column;
  border-radius: 0.75rem;
  border: 1px solid rgba(34, 211, 238, 0.35);
  background: rgba(2, 6, 23, 0.97);
  box-shadow: 0 20px 50px rgba(8, 47, 73, 0.55);
  overflow: hidden;
  backdrop-filter: blur(10px);
}

.alfa-demo__head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 0.75rem;
  border-bottom: 1px solid rgba(51, 65, 85, 0.85);
  background: rgba(15, 23, 42, 0.9);
  flex-shrink: 0;
}
.alfa-demo__avatar {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 9999px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.95rem;
  color: #ecfeff;
  background: linear-gradient(145deg, #0e7490 0%, #155e75 100%);
  box-shadow: 0 0 0 2px rgba(34, 211, 238, 0.45);
  flex-shrink: 0;
}
.alfa-demo__head-text {
  min-width: 0;
  flex: 1;
}
.alfa-demo__title {
  font-size: 0.875rem;
  font-weight: 600;
  color: #67e8f9;
  letter-spacing: 0.04em;
}
.alfa-demo__subtitle {
  font-size: 0.6875rem;
  color: var(--uspbf-muted);
  line-height: 1.35;
  margin-top: 0.15rem;
}
.alfa-demo__close {
  border: none;
  background: transparent;
  color: var(--uspbf-muted);
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
  padding: 0.35rem;
  border-radius: 0.35rem;
  flex-shrink: 0;
}
.alfa-demo__close:hover {
  color: var(--uspbf-text);
  background: rgba(51, 65, 85, 0.5);
}

.alfa-demo__messages {
  flex: 1;
  min-height: 8rem;
  overflow-y: auto;
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.8125rem;
  line-height: 1.45;
}

.alfa-demo__bubble {
  max-width: 92%;
  padding: 0.5rem 0.65rem;
  border-radius: 0.65rem;
  word-break: break-word;
}
.alfa-demo__bubble--user {
  align-self: flex-end;
  background: rgba(14, 165, 233, 0.22);
  border: 1px solid rgba(56, 189, 248, 0.35);
  color: var(--uspbf-text);
}
.alfa-demo__bubble--assistant {
  align-self: flex-start;
  background: rgba(30, 41, 59, 0.9);
  border: 1px solid var(--uspbf-border);
  color: var(--uspbf-text);
}
.alfa-demo__bubble--loading {
  color: var(--uspbf-muted);
  font-style: italic;
}

.alfa-demo__form {
  display: flex;
  gap: 0.5rem;
  padding: 0.65rem 0.75rem;
  border-top: 1px solid rgba(51, 65, 85, 0.85);
  background: rgba(15, 23, 42, 0.88);
  flex-shrink: 0;
}
.alfa-demo__input {
  flex: 1;
  min-width: 0;
  border-radius: 0.5rem;
  border: 1px solid var(--uspbf-border);
  background: rgba(15, 23, 42, 0.95);
  color: var(--uspbf-text);
  padding: 0.45rem 0.6rem;
  font-size: 0.8125rem;
}
.alfa-demo__input:focus {
  outline: 2px solid rgba(34, 211, 238, 0.45);
  outline-offset: 1px;
}
.alfa-demo__input:disabled {
  opacity: 0.6;
}
.alfa-demo__send {
  border-radius: 0.5rem;
  border: none;
  background: var(--uspbf-accent-sky-strong);
  color: #0f172a;
  font-weight: 600;
  font-size: 0.8125rem;
  padding: 0.45rem 0.85rem;
  cursor: pointer;
  flex-shrink: 0;
}
.alfa-demo__send:hover:not(:disabled) {
  background: #38bdf8;
}
.alfa-demo__send:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}