/* ════════════════════════════════════════════════════
   layout.css — Trainer DB
   Inhaltsverzeichnis:
   1. Skip-Link
   2. Container (.container)
   3. Main-Content (.site-main)
   4. Navigation (.site-nav, .nav-*, Mobile-Toggle)
   5. Footer (.site-footer)
   6. Page-Header (.page-header, .ex-breadcrumb)
   7. Admin-Subnav (.admin-subnav)
   8. My-Area-Subnav (.my-area-subnav)
   9. My-Area-Subnav + Knowledge-Subnav (beide verwenden .my-area-subnav)
   REGEL: Keine Komponenten-Innenleben, kein Seiten-Layout.
   ════════════════════════════════════════════════════ */

/* 1. Skip-Link ------------------------------------------- */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-sm);
  z-index: 9999;
  background: var(--primary);
  color: var(--white);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: var(--font-size-sm);
  text-decoration: none;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-sm);
  outline: 2px solid var(--highlight);
  outline-offset: 2px;
}

/* 2. Container & Page-Wrapper ---------------------------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--content-padding);
}

.page-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

@keyframes page-fade-in {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: none; }
}

/* 3. Main-Content ---------------------------------------- */
main.site-main {
  flex: 1;
  padding: var(--space-xl) 0;
  animation: page-fade-in var(--transition-slow) both;
}

/* 4. Header ---------------------------------------------- */
.site-header {
  background: linear-gradient(120deg, #1a2a0a 0%, var(--primary-deep) 50%, var(--primary) 100%);
  color: var(--white);
  height: var(--nav-height);
  display: flex;
  align-items: center;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: height var(--transition), box-shadow var(--transition);
}

.site-header.is-scrolled {
  height: var(--nav-height-scrolled);
  box-shadow: var(--shadow-md);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  width: 100%;
  position: relative;
}

.site-header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
}

.site-header__logo img {
  height: var(--logo-size);
  width: auto;
  transition: height var(--transition);
}

.site-header.is-scrolled .site-header__logo img {
  height: var(--logo-size-scrolled);
}

.site-header__title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--white);
  line-height: 1.2;
}

.site-header__subtitle {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.75);
}

/* 5. Navigation — Burger-Button -------------------------- */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.14);
  border: none;
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
  flex-shrink: 0;
}

.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.24);
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
  transform-origin: center;
}

.nav-toggle.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.is-open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav-toggle.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* 5. Navigation — Dropdown (Mobile) --------------------- */
.site-nav {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  left: auto;
  width: 256px;
  background: rgba(40, 55, 22, 0.72);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-lg);
  z-index: 99;
  flex-direction: column;
  align-items: stretch;
  gap: 0;
  padding: 0;
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: 12px;
  margin-top: 6px;
}

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

.site-nav a,
.site-nav a:visited,
.site-nav__logout-btn {
  display: inline-flex;
  align-items: center;
  width: 100%;
  color: var(--color-nav-link);
  text-decoration: none;
  padding: 0.75rem 1.25rem;
  gap: var(--space-sm);
  border-radius: 0;
  border: none;
  border-bottom: 1px solid rgba(255,255,255,0.07);
  transition: background var(--transition), color var(--transition);
  font-size: 1rem;
  font-weight: 400;
  min-height: 44px;
  box-sizing: border-box;
}

.site-nav__logout-form { display: contents; }
.site-nav__logout-btn {
  background: none;
  cursor: pointer;
  font-family: inherit;
}

.site-nav a svg,
.site-nav__logout-btn svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.site-nav a:last-child,
.site-nav__logout-form:last-child .site-nav__logout-btn {
  border-bottom: none;
}

.site-nav a:hover,
.site-nav__logout-btn:hover {
  background: rgba(255,255,255,0.09);
  color: var(--white);
  text-decoration: none;
}

.site-nav a.is-active {
  background: rgba(255,255,255,0.09);
  color: var(--white);
  text-decoration: none;
  border-left: 3px solid var(--highlight);
  padding-left: calc(1.25rem - 3px);
  font-weight: 600;
}

/* 5. Navigation — Desktop (ab 900px) -------------------- */
@media (min-width: 900px) {
  .nav-toggle {
    display: none;
  }

  .site-nav {
    display: flex !important;
    position: static;
    flex-direction: row;
    width: auto;
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    box-shadow: none;
    border: none;
    border-radius: 0;
    gap: 0;
    padding: 0;
    margin-top: 0;
  }

  .site-nav a,
  .site-nav__logout-btn {
    padding: 0 0.875rem;
    border-bottom: none;
    border-radius: 0;
    font-size: var(--font-size-sm);
    min-height: var(--nav-height);
    position: relative;
    white-space: nowrap;
  }

  .site-nav a:hover,
  .site-nav__logout-btn:hover {
    background: rgba(255,255,255,0.06);
  }

  .site-nav a.is-active {
    background: transparent;
    color: var(--white);
    font-weight: 600;
    border-left: none;
    padding-left: 0.875rem;
  }
  .site-nav a.is-active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0.875rem;
    right: 0.875rem;
    height: 3px;
    background: rgba(255, 255, 255, 0.92);
    border-radius: 2px 2px 0 0;
  }
}

/* 5b. Admin-Icon-Link in Topnav -------------------------- */
/* Mobile: Label ausblenden, nur Icon */
.site-nav a.site-nav__admin .nav-label {
  display: none;
}
@media (min-width: 900px) {
  .site-nav a.site-nav__admin {
    padding: 0 0.625rem;
  }
}

/* 6. Footer ---------------------------------------------- */
.site-footer {
  background: linear-gradient(300deg, #1a2a0a 0%, var(--primary-deep) 50%, var(--primary) 100%);
  color: var(--secondary);
  padding: var(--space-sm) 0;
  font-size: var(--font-size-sm);
  text-align: center;
  margin-top: auto;
}

.site-footer__copy {
  margin: 0;
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
}

.site-footer__link,
.site-footer__link:visited {
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  transition: color var(--transition);
}

.site-footer__link:hover,
.site-footer__link:focus-visible {
  color: var(--white);
  text-decoration: underline;
}

.site-footer__version {
  color: rgba(255, 255, 255, 0.55);
  font-size: var(--font-size-sm);
}

.site-footer__sep {
  color: rgba(255, 255, 255, 0.35);
  margin: 0 0.3em;
  user-select: none;
}

/* 7. Admin-Subnav ---------------------------------------- */
.admin-subnav {
  background: var(--white);
  border-bottom: 1px solid var(--border-soft);
  box-shadow: var(--shadow-sm);
}

.admin-subnav .container {
  display: flex;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
  padding-block: 0;
}

.admin-subnav .container::-webkit-scrollbar {
  display: none;
}

.admin-subnav__link,
.admin-subnav__link:visited {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.7rem 1.1rem;
  color: var(--soft-text);
  font-size: var(--font-size-sm);
  font-weight: 400;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}

.admin-subnav__link:hover {
  color: var(--primary);
  background: var(--light-bg);
  text-decoration: none;
}

.admin-subnav__link.is-active {
  color: var(--primary);
  border-bottom-color: var(--highlight);
  font-weight: 600;
}

@keyframes badge-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(242, 184, 75, 0.55); }
  50%       { box-shadow: 0 0 0 5px rgba(242, 184, 75, 0); }
}

.admin-subnav__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--highlight);
  color: var(--primary-deep);
  font-size: var(--font-size-tag);
  font-weight: 700;
  min-width: 18px;
  height: 18px;
  border-radius: 999px;
  padding: 0 4px;
  line-height: 1;
  animation: badge-pulse 2.8s ease-in-out infinite;
}

/* 8. My-Area-Subnav (auch: Knowledge-Subnav) ------------ */
.my-area-subnav {
  background: var(--white);
  border-bottom: 1px solid var(--border-soft);
  box-shadow: var(--shadow-sm);
}

.my-area-subnav .container {
  display: flex;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
  padding-block: 0;
}

.my-area-subnav .container::-webkit-scrollbar {
  display: none;
}

.my-area-subnav__link,
.my-area-subnav__link:visited {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.7rem 1.1rem;
  color: var(--soft-text);
  font-size: var(--font-size-sm);
  font-weight: 400;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}

.my-area-subnav__link:hover {
  color: var(--primary);
  background: var(--light-bg);
  text-decoration: none;
}

.my-area-subnav__link.is-active {
  color: var(--primary);
  border-bottom-color: var(--highlight);
  font-weight: 600;
}

.my-area-subnav__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--highlight);
  color: var(--primary-deep);
  font-size: var(--font-size-tag);
  font-weight: 700;
  min-width: 1.25rem;
  height: 1.25rem;
  padding: 0 0.3rem;
  border-radius: 999px;
  line-height: 1;
  animation: badge-pulse 2.8s ease-in-out infinite;
}

/* 9. Subnav Mobile-Toggle (alle Subnavs) ----------------- */
.subnav-mobile-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0.75rem 1.5rem 0.75rem 1.25rem;
  background: var(--light-bg);
  border: none;
  color: var(--primary);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font-family);
  min-height: 48px;
  transition: color var(--transition), background var(--transition);
}

.subnav-mobile-toggle:hover,
.subnav-mobile-toggle:focus-visible {
  color: var(--primary-deep);
  background: var(--hover-bg);
}

.subnav-mobile-toggle__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  padding: 4px;
  background-color: var(--primary);
  background-image: linear-gradient(rgba(255,255,255,0.14), rgba(255,255,255,0.14));
  border-radius: var(--radius-sm);
  color: var(--white);
  transition: transform var(--transition), background-color var(--transition);
}

.subnav-mobile-toggle:hover .subnav-mobile-toggle__icon,
.subnav-mobile-toggle:focus-visible .subnav-mobile-toggle__icon {
  background-color: var(--primary-deep);
}

.admin-subnav.is-open .subnav-mobile-toggle__icon,
.my-area-subnav.is-open .subnav-mobile-toggle__icon {
  transform: rotate(180deg);
}

.admin-subnav .subnav-links,
.my-area-subnav .subnav-links {
  display: none;
  flex-direction: column;
  padding-bottom: 0.25rem;
}

.admin-subnav.is-open .subnav-links,
.my-area-subnav.is-open .subnav-links {
  display: flex;
}

.admin-subnav .subnav-links .admin-subnav__link,
.my-area-subnav .subnav-links .my-area-subnav__link {
  border-bottom: none;
  border-top: 1px solid var(--border-soft);
  padding: 0.75rem 1.25rem;
  white-space: normal;
  font-size: 1rem;
  min-height: 44px;
}

.admin-subnav .subnav-links .admin-subnav__link.is-active,
.my-area-subnav .subnav-links .my-area-subnav__link.is-active {
  background: var(--light-bg);
  border-left: 3px solid var(--highlight);
  padding-left: calc(1.25rem - 3px);
}

.admin-subnav .container,
.my-area-subnav .container {
  flex-direction: column;
  overflow: visible;
}

@media (min-width: 768px) {
  .subnav-mobile-toggle { display: none; }

  .admin-subnav .subnav-links,
  .my-area-subnav .subnav-links {
    display: flex;
    flex-direction: row;
    padding-bottom: 0;
  }

  .admin-subnav .subnav-links .admin-subnav__link,
  .my-area-subnav .subnav-links .my-area-subnav__link {
    border-bottom: 2px solid transparent;
    border-top: none;
    padding: 0.7rem 1.1rem;
    white-space: nowrap;
    font-size: var(--font-size-sm);
    min-height: revert;
  }

  .admin-subnav .subnav-links .admin-subnav__link.is-active,
  .my-area-subnav .subnav-links .my-area-subnav__link.is-active {
    background: transparent;
    border-left: none;
    padding-left: 1.1rem;
  }

  .admin-subnav .container,
  .my-area-subnav .container {
    flex-direction: row;
    overflow-x: auto;
  }
}


/* 10. Platform-Tabs (Admin-Cockpit: stats, ki, fehler, shares) */
.platform-tabs {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--border-soft);
  margin-bottom: var(--space-lg);
  overflow-x: auto;
  scrollbar-width: none;
}

.platform-tabs::-webkit-scrollbar {
  display: none;
}

.platform-tab,
.platform-tab:visited {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.65rem 1.25rem;
  color: var(--soft-text);
  font-size: var(--font-size-sm);
  font-weight: 400;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  white-space: nowrap;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}

.platform-tab:hover {
  color: var(--primary);
  background: var(--light-bg);
  text-decoration: none;
}

.platform-tab.is-active {
  color: var(--primary);
  border-bottom-color: var(--highlight);
  font-weight: 600;
}

/* 11. Login-Seite (.login-wrapper, .login-box) ----------- */
.login-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at 50% 0%, rgba(77, 102, 48, 0.08) 0%, transparent 55%), var(--light-bg);
  padding: var(--space-xl);
}

.login-stack {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  max-width: 440px;
  gap: var(--space-md);
}

.login-brand {
  text-align: center;
}

.login-brand__logo {
  height: 72px;
  object-fit: contain;
  display: block;
  margin: 0 auto var(--space-sm);
}

.login-brand__title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 0.25rem;
}

.login-brand__subtitle {
  font-size: var(--font-size-sm);
  color: var(--soft-text);
  margin-bottom: 0;
}

.login-box {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2xl);
  width: 100%;
}

.login-box__logo {
  text-align: center;
  margin-bottom: var(--space-lg);
}

.login-box__logo-img {
  height: 64px;
  object-fit: contain;
}

.login-box__logo-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary);
  margin: var(--space-xs) 0 0;
}

.login-box__submit {
  display: block;
  width: 100%;
  text-align: center;
  margin-bottom: var(--space-sm);
}

.login-box__hint {
  color: var(--soft-text);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-md);
}

.login-box__forgot {
  text-align: center;
  margin-top: var(--space-xs);
}

.login-box__forgot-link,
.login-box__forgot-link:visited {
  font-size: 0.875rem;
  color: var(--soft-text);
  text-decoration: none;
  transition: color var(--transition);
}

.login-box__forgot-link:hover {
  color: var(--primary);
  text-decoration: underline;
}


/* 11. Header-Größe + Nav-User-Dropdown ------------------- */
:root {
  --nav-height: 64px;
  --logo-size: 56px;
}

.site-header .container {
  gap: 0;
  padding-block: var(--space-sm);
}

@media (min-width: 1025px) {
  :root {
    --nav-height: 72px;
    --logo-size: 54px;
  }

  .site-header .container {
    gap: var(--space-md);
    padding-block: 0;
  }
}

.site-nav a:focus-visible,
.admin-subnav__link:focus-visible,
.my-area-subnav__link:focus-visible {
  outline: 2px solid var(--highlight);
  outline-offset: -2px;
  border-radius: 0;
}

.nav-user-dropdown {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.nav-user-dropdown__toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.85rem;
  background: rgba(255,255,255,0.12);
  border: 1.5px solid rgba(255,255,255,0.3);
  border-radius: var(--radius-sm);
  color: var(--white);
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
  white-space: nowrap;
}

.nav-user-dropdown__toggle:hover {
  background: rgba(255,255,255,0.2);
  border-color: rgba(255,255,255,0.5);
}

.nav-user-dropdown__caret {
  font-size: var(--font-size-sm);
  opacity: 0.7;
  margin-left: 0.1rem;
}

.nav-user-dropdown__menu {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  background: var(--white);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  min-width: 190px;
  z-index: 300;
  overflow: hidden;
  border: 1px solid var(--border-soft);
}

.nav-user-dropdown__item {
  display: block;
  width: 100%;
  padding: 0.7rem 1rem;
  color: var(--primary);
  font-size: 1rem;
  font-family: var(--font-family);
  text-decoration: none;
  background: none;
  border: none;
  border-bottom: 1px solid var(--border-soft);
  text-align: left;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
  line-height: 1.4;
  box-sizing: border-box;
}

.nav-user-dropdown__item:last-child {
  border-bottom: none;
}

.nav-user-dropdown__item:hover {
  background: var(--light-bg);
  color: var(--primary-deep);
  text-decoration: none;
}

.nav-user-dropdown__item--danger {
  color: var(--color-error);
}

.nav-user-dropdown__item--danger:hover {
  background: var(--bg-error-soft);
  color: var(--color-error);
}

.nav-user-dropdown__logout-form {
  margin: 0;
  padding: 0;
}

.nav-user-btn,
.nav-user-btn:visited {
  color: rgba(255,255,255,0.85);
  text-decoration: none;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid rgba(255,255,255,0.3);
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: background var(--transition), border-color var(--transition);
}

.nav-user-btn:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.5);
  color: var(--white);
  text-decoration: none;
}


/* ══ 12. Dark Mode: Komponenten-Overrides ══════════════════════════════════
   Token-Overrides in tokens.css. Hier: Selektoren, die nicht per Token lösbar sind.
   ════════════════════════════════════════════════════════════════════════════ */
@media (prefers-color-scheme: dark) {
  .site-header {
    background: linear-gradient(120deg, #0d1608 0%, #1c2b10 50%, #253515 100%);
  }

  .site-footer {
    background: linear-gradient(300deg, #0d1608 0%, #1c2b10 50%, #253515 100%);
  }

  .site-nav {
    background: rgba(15, 25, 10, 0.82);
  }

  .login-wrapper {
    background: radial-gradient(ellipse at 50% 0%, rgba(100, 160, 60, 0.08) 0%, transparent 55%), var(--light-bg);
  }

  .login-brand__title  { color: var(--primary); }
  .login-brand__subtitle { color: var(--soft-text); }

  .login-box {
    background: var(--light-bg);
    box-shadow: var(--shadow-lg);
  }
}