/* Shared site header: all four active layouts use partials/app_header.php.
   Keep brand, sizing, responsive navigation and focus styles here. */
:root { --ff-app-blue: #3b7ff0; --ff-app-blue-dark: #2563eb; --ff-app-ink: #1f2937; --ff-app-wrap: 100%; }
@media (min-width: 768px) { :root { --ff-app-wrap: 750px; } }
@media (min-width: 992px) { :root { --ff-app-wrap: 970px; } }
@media (min-width: 1200px) { :root { --ff-app-wrap: 1170px; } }
body.ff-shell > .ff-appbar {
  box-sizing: border-box; width: 100%; height: auto; min-height: 0; margin: 0; padding: 0;
  border: 0; border-radius: 0; box-shadow: none; background: var(--ff-app-blue); color: #fff;
  position: relative; z-index: 30; font-family: Montserrat, -apple-system, system-ui, "Segoe UI", sans-serif;
  font-size: 16px; font-weight: 400; line-height: 1.4; text-shadow: none;
}
.ff-appbar *, .ff-appbar *::before, .ff-appbar *::after { box-sizing: border-box; }
.ff-appbar__bar { width: var(--ff-app-wrap); max-width: 100%; min-height: 57px; margin: 0 auto; padding: 0 15px; display: flex; align-items: center; gap: 8px; }
.ff-appbar .ff-appbar__brand { flex: 1; min-width: 0; display: flex; align-items: center; gap: 10px; margin: 0; padding: 0; color: #fff; text-decoration: none; font-family: inherit; font-size: 22px; font-weight: 700; line-height: 1.2; text-shadow: none; }
.ff-appbar__brand span { min-width: 0; }
.ff-appbar .ff-appbar__brand:hover, .ff-appbar .ff-appbar__brand:focus { color: #fff; text-decoration: none; }
.ff-appbar .ff-appbar__brand img { display: block; flex: 0 0 auto; height: 30px; width: auto; max-width: none; margin: 0; padding: 0; }
.ff-appbar .ff-appbar__menu-btn { flex: 0 0 44px; display: flex; align-items: center; justify-content: center; width: 44px; height: 44px; margin: 0; padding: 0; border: 0; border-radius: 8px; background: transparent; color: #fff; font: inherit; cursor: pointer; box-shadow: none; }
.ff-appbar__menu-btn:hover, .ff-appbar__menu-btn[aria-expanded=true] { background: rgba(255,255,255,.14); }
.ff-appbar a:focus-visible, .ff-appbar button:focus-visible { outline: 2px solid currentColor; outline-offset: 2px; }
.ff-appbar__menu { position: absolute; top: 100%; right: max(16px, calc((100% - var(--ff-app-wrap)) / 2 + 15px)); min-width: 190px; max-width: calc(100% - 32px); margin: 0; padding: 6px; background: #fff; color: var(--ff-app-ink); border: 0; border-radius: 10px; box-shadow: 0 8px 30px rgba(0,0,0,.15); }
.ff-appbar__menu[hidden] { display: none; }
.ff-appbar .ff-appbar__menu a { display: block; margin: 0; padding: 10px 12px; color: var(--ff-app-ink); text-decoration: none; border-radius: 6px; font: inherit; font-size: 15px; line-height: 1.4; text-shadow: none; }
.ff-appbar .ff-appbar__menu a:hover { background: #eaf3ff; color: var(--ff-app-blue-dark); }
@media (max-width: 767px) { .ff-appbar__bar { padding: 0 16px; } }
@media (min-width: 768px) {
  .ff-appbar--public .ff-appbar__menu-btn { display: none; }
  .ff-appbar--public .ff-appbar__menu { position: static; display: flex; align-items: center; gap: 10px; min-width: 0; max-width: none; padding: 0; background: transparent; box-shadow: none; }
  .ff-appbar--public .ff-appbar__menu a { color: #fff; }
  .ff-appbar--public .ff-appbar__menu .ff-appbar__signup { padding: 9px 18px; background: #fff; color: var(--ff-app-blue-dark); border-radius: 999px; font-weight: 600; }
  .ff-appbar--public .ff-appbar__menu a:hover { background: rgba(255,255,255,.14); }
  .ff-appbar--public .ff-appbar__menu .ff-appbar__signup:hover { background: #eaf3ff; }
}

/* Footer: the site's one footer is partials/footer.php (its styles live there). */

/* Text sizes for the whole app: one scale, desktop first, then phones. Pages use these, never their own sizes. */
:root { --ff-th-title: 44px; --ff-th-line: 38px; --ff-en-line: 20px; --ff-en-title: 17px; }
@media (max-width: 600px) { :root { --ff-th-title: 34px; --ff-th-line: 32px; --ff-en-line: 18px; --ff-en-title: 15px; } }

/* Page title: the Thai title large, the English meaning under it (study screen; dashboard cards use the same sizes) */
.ff-pagehead { margin: 0 0 14px; }
.ff-pagehead__th { margin: 0; font-size: var(--ff-th-title); font-weight: 700; line-height: 1.3; color: var(--ff-app-ink); }
.ff-pagehead__en { margin: 2px 0 0; font-size: var(--ff-en-title); line-height: 1.4; color: #6b7280; }
.ff-pagehead__th, .ff-pagehead__en { -webkit-user-select: text; user-select: text; }