/* ============================================================
   RAD Software — shared site theme (dark LSU purple & gold)
   Link this file on every marketing page:
   <link rel="stylesheet" href="/rad-theme.css">

   NOTE: the exact purple/gold hex values below are close to the
   standard LSU brand colors, tuned for a dark background. If
   FAR-Base, FAT-Base, or RAD-BTT already use slightly different
   shades, adjust the values below and every page/component
   updates automatically.
   ============================================================ */

:root {
  /* Brand colors */
  --rad-purple: #9B7FD4;
  --rad-purple-dark: #2A1548;
  --rad-purple-light: #C3AEEA;
  --rad-gold: #FDD023;
  --rad-gold-dark: #E8B800;

  /* Dark neutrals */
  --rad-bg: #150B26;
  --rad-surface: #221238;
  --rad-surface-raised: #2C1848;
  --rad-text: #F1EAFB;
  --rad-text-muted: #B6A6D6;
  --rad-border: #3D2A5C;

  /* Layout */
  --rad-radius: 10px;
  --rad-max-width: 1100px;
  --rad-nav-height: 64px;

  /* Type */
  --rad-font-body: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --rad-font-display: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--rad-font-body);
  color: var(--rad-text);
  background: var(--rad-bg);
  line-height: 1.6;
}

.rad-container {
  max-width: var(--rad-max-width);
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3 {
  font-family: var(--rad-font-display);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--rad-gold);
  line-height: 1.2;
  margin: 0 0 .5em;
}

a { color: var(--rad-purple-light); }
a:hover { color: var(--rad-gold); }

/* ---------- Top nav ---------- */
.rad-nav {
  background: #0E0619;
  height: var(--rad-nav-height);
  border-bottom: 1px solid var(--rad-border);
}
.rad-nav .rad-container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.rad-nav-brand {
  color: var(--rad-gold);
  font-family: var(--rad-font-display);
  font-size: 1.3rem;
  text-decoration: none;
  font-weight: bold;
}
.rad-nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.rad-nav-links a {
  color: var(--rad-gold);
  text-decoration: none;
  font-size: .95rem;
}
.rad-nav-links a:hover,
.rad-nav-links a.rad-active {
  color: var(--rad-gold-dark);
}

/* ---------- Buttons ---------- */
.rad-btn {
  display: inline-block;
  padding: 10px 22px;
  border-radius: var(--rad-radius);
  background: var(--rad-gold);
  color: var(--rad-purple-dark);
  font-weight: bold;
  text-decoration: none;
  border: none;
  cursor: pointer;
}
.rad-btn:hover { background: var(--rad-gold-dark); color: var(--rad-purple-dark); }
.rad-btn-outline {
  background: transparent;
  border: 2px solid var(--rad-gold);
  color: var(--rad-gold);
}
.rad-btn-disabled {
  cursor: not-allowed;
  opacity: .55;
  border-color: var(--rad-text-muted);
  color: var(--rad-text-muted);
}

/* ---------- Product cards (used on the homepage) ---------- */
.rad-product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  margin: 32px 0;
}
.rad-card {
  background: var(--rad-surface);
  border: 1px solid var(--rad-border);
  border-radius: var(--rad-radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.rad-card h3 { margin: 0; color: var(--rad-purple-light); }
.rad-card p { color: var(--rad-text-muted); margin: 0; flex-grow: 1; }
.rad-card-soon {
  border-style: dashed;
  opacity: .8;
}
.rad-card-tag {
  display: inline-block;
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--rad-gold);
  background: var(--rad-surface-raised);
  padding: 3px 10px;
  border-radius: 999px;
  width: fit-content;
}

/* ---------- Choice cards (native vs. download, etc.) ---------- */
.rad-choice-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 28px 0;
}
.rad-choice-card {
  background: var(--rad-surface);
  border: 1px solid var(--rad-border);
  border-radius: var(--rad-radius);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.rad-choice-card h3 { margin: 0; color: var(--rad-gold); font-size: 1.1rem; }
.rad-choice-card ul { margin: 0; padding-left: 20px; color: var(--rad-text-muted); }
.rad-choice-card li { margin-bottom: 6px; }
.rad-choice-card .rad-btn { margin-top: auto; align-self: flex-start; }

/* ---------- Sub-menu pages (e.g. Bridge Teaching Tools) ---------- */
.rad-btt-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  padding: 12px 0 8px;
}
.rad-btt-topbar > div:last-child {
  display: flex;
  justify-content: flex-end;
}
.rad-btt-subtitle {
  color: var(--rad-gold);
  font-weight: bold;
  font-size: 1.05rem;
  margin: 0 0 10px;
}
.rad-info-button {
  padding: 6px 14px;
  font-size: .85rem;
  cursor: pointer;
  background: var(--rad-surface-raised);
  color: var(--rad-gold);
  border: 1px solid var(--rad-gold);
  border-radius: 6px;
}
.rad-info-button:hover { background: var(--rad-surface); }

.rad-tip-jar {
  flex-shrink: 0;
  background: var(--rad-surface);
  border: 1px solid var(--rad-border);
  border-radius: var(--rad-radius);
  padding: 10px 14px;
  text-align: center;
}
.rad-tip-jar p {
  margin: 0 0 6px;
  color: var(--rad-gold);
  font-size: .75rem;
  font-weight: bold;
}
.rad-tip-jar-link {
  display: inline-block;
  line-height: 0;
  transition: transform .2s;
}
.rad-tip-jar-link:hover { transform: scale(1.08); }

/* Menu grid — 3-column tool menus */
.rad-menu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin: 8px 0 48px;
}
.rad-menu-column {
  background: var(--rad-surface);
  border: 1px solid var(--rad-border);
  border-radius: var(--rad-radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.rad-menu-title {
  color: var(--rad-gold);
  text-align: center;
  margin: 0 0 4px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--rad-border);
  font-size: 1.15rem;
  text-transform: uppercase;
  letter-spacing: .5px;
}
.rad-menu-column ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.rad-tool-btn {
  display: block;
  padding: 10px 16px;
  background: var(--rad-surface-raised);
  text-decoration: none;
  color: var(--rad-gold);
  border-radius: 8px;
  border: 1px solid var(--rad-purple-light);
  text-align: center;
  font-weight: bold;
}
.rad-tool-btn:hover { background: var(--rad-bg); border-color: var(--rad-gold); }
.rad-tool-subtext {
  display: block;
  font-size: .8em;
  font-weight: normal;
  color: var(--rad-purple-light);
  margin-top: 4px;
}
.rad-tool-btn.rad-tool-disabled {
  cursor: default;
  color: var(--rad-text-muted);
  border-color: var(--rad-border);
  background: var(--rad-bg);
}
.rad-tool-btn.rad-tool-disabled:hover { background: var(--rad-bg); border-color: var(--rad-border); }

/* Modal (info popups on sub-menu pages) */
.rad-modal {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.75);
  justify-content: center;
  align-items: flex-start;
  overflow-y: auto;
  z-index: 1000;
}
.rad-modal-content {
  background: var(--rad-surface);
  padding: 25px;
  border-radius: var(--rad-radius);
  border: 1px solid var(--rad-gold);
  max-width: 450px;
  max-height: 80vh;
  margin-top: 40px;
  box-sizing: border-box;
  color: var(--rad-text);
  display: flex;
  flex-direction: column;
}
.rad-modal-header {
  color: var(--rad-gold);
  text-align: center;
  margin: 0 0 15px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--rad-gold);
  font-size: 1.3rem;
  flex-shrink: 0;
}
.rad-modal-body {
  overflow-y: auto;
  min-height: 0;
}
.rad-modal-close-btn {
  margin: 15px auto 0;
  padding: 5px 15px;
  cursor: pointer;
  display: block;
  background: var(--rad-surface-raised);
  color: var(--rad-gold);
  border: 1px solid var(--rad-gold);
  border-radius: 6px;
}

@media (max-width: 850px) {
  .rad-btt-topbar { flex-direction: column; align-items: center; text-align: center; }
}

/* ---------- Footer ---------- */
.rad-footer {
  background: #0E0619;
  color: var(--rad-text-muted);
  margin-top: 24px;
  padding: 14px 0;
  font-size: .85rem;
  border-top: 1px solid var(--rad-border);
}
.rad-footer p { margin: 0; }
.rad-footer a { color: var(--rad-purple-light); }

@media (max-width: 640px) {
  .rad-nav-links { gap: 16px; font-size: .85rem; }
  .rad-choice-grid { grid-template-columns: 1fr; }
}