/* ==========================================================================
   BUJINDO e.V. - Main Stylesheet
   Mobile-first responsive design
   ========================================================================== */

/* ==========================================================================
   1. CUSTOM PROPERTIES
   ========================================================================== */
:root {
  /* Brand Colors */
  --color-primary: #494a49;
  --color-primary-light: #6a6c69;
  --color-accent: #bebebe;
  --color-accent-dark: #7d7c7c;
  --color-highlight: #990000;
  --color-link: #6a6c69;
  --color-link-hover: #494a49;
  --color-nav-link-active: #df0000;

  /* Neutrals */
  --color-text: #333333;
  --color-text-light: #666666;
  --color-bg: #ffffff;
  --color-bg-alt: #f7f7f5;
  --color-border: #dddddd;
  --color-border-light: #eeeeee;

  /* Typography */
  --font-body: 'Verdana', 'Tahoma', sans-serif;
  --font-heading: 'Verdana', 'Tahoma', sans-serif;
  --font-logo: Georgia, 'Times New Roman', Times, serif;
  --font-size-base: 1rem;
  --line-height-base: 1.6;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 3rem;

  /* Layout */
  --container-max-width: 960px;
  --container-padding: 1rem;
  --header-height: 112.5px;
  --header-logo-inset: 12px;
  --nav-height: 48px;
}

/* ==========================================================================
   2. RESET & BASE
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 100%;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border: none;
}

a {
  color: var(--color-link);
  text-decoration: underline;
  font-weight: bold;
}

a:hover,
a:focus {
  color: var(--color-link-hover);
  text-decoration: underline;
}

ul, ol {
  padding-left: 1.5em;
}

/* ==========================================================================
   3. TYPOGRAPHY
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: bold;
  line-height: 1.3;
  color: var(--color-text);
}

h1 { font-size: 2.2rem; }
h2 { font-size: 1.85rem; margin-bottom: var(--space-sm); }
h3 {
  font-size: 1.3rem;
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
  padding-bottom: var(--space-xs);
  border-bottom: 1px dotted #444;
}
h4 { font-size: 1.25rem; margin-bottom: var(--space-sm); }
h5 { font-size: 1.1rem; font-weight: bold; margin-bottom: var(--space-xs); }

p {
  margin-bottom: var(--space-md);
}

/* ==========================================================================
   4. LAYOUT & CONTAINER
   ========================================================================== */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

/* ==========================================================================
   5. HEADER & LOGO
   ========================================================================== */
.site-header {
  background-color: var(--color-primary);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  min-height: var(--header-height);
  position: relative;
}

.site-header__logo {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: #fff;
  font-weight: normal;
}

.site-header__logo-img {
  width: calc(var(--header-height) - var(--header-logo-inset));
  height: calc(var(--header-height) - var(--header-logo-inset));
  border-radius: 50%;
  border: 2px solid #fff;
  object-fit: cover;
  flex-shrink: 0;
}

.site-header__logo-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  max-width: calc(100vw - var(--header-height) - 5rem);
}

.site-header__logo:hover,
.site-header__logo:focus {
  text-decoration: none;
  color: #fff;
}

.logo-text {
  display: flex;
  align-items: baseline;
  gap: 0.3em;
}

.logo-text__main {
  font-family: var(--font-logo);
  font-size: 2rem;
  letter-spacing: 0.20em;
  font-weight: regular;
}

.logo-text__suffix {
  font-family: var(--font-logo);
  font-size: 1.6rem;
  font-weight: regular;
}

.logo-text__tagline {
  font-family: var(--font-body);
  font-size: 0.85rem;
  opacity: 1;
  margin-top: 4px;
  letter-spacing: 0.05em;
}

/* ==========================================================================
   6. NAVIGATION - MOBILE (Default)
   ========================================================================== */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 200;
  position: absolute;
  right: var(--container-padding);
}

.nav-toggle__bar {
  display: block;
  width: 26px;
  height: 3px;
  background-color: #fff;
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

/* Hamburger animation when open */
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.site-nav {
  background-color: var(--color-primary);
  position: fixed;
  top: 0;
  right: -100%;
  width: 280px;
  height: 100vh;
  z-index: 150;
  overflow-y: auto;
  transition: right 0.3s ease;
  padding-top: var(--space-xl);
  box-shadow: -2px 0 8px rgba(0, 0, 0, 0.3);
}

.site-nav.is-open {
  right: 0;
}

.site-nav__list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.site-nav__item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.site-nav__link {
  display: block;
  padding: 0.85rem 1.5rem;
  color: #fff;
  font-weight: normal;
  font-size: 0.95rem;
  text-decoration: none;
}

.site-nav__link:hover,
.site-nav__link:focus {
  background-color: var(--color-primary-light);
  color: #fff;
  text-decoration: none;
}

.site-nav__link--active {
  border-left: 4px solid var(--color-nav-link-active);
  background-color: rgba(255, 255, 255, 0.05);
}

/* Submenu toggle button (mobile) */
.site-nav__item--has-submenu > .site-nav__link-wrap {
  display: flex;
  align-items: center;
}

.site-nav__item--has-submenu > .site-nav__link-wrap .site-nav__link {
  flex: 1;
}

.submenu-toggle {
  background: none;
  border: none;
  color: #fff;
  padding: 0.85rem 1.2rem;
  cursor: pointer;
  font-size: 1.0rem;
  transition: transform 0.3s ease;
}

.submenu-toggle[aria-expanded="true"] {
  transform: rotate(180deg);
}

/* Submenu */
.site-nav__submenu {
  list-style: none;
  padding: 0;
  margin: 0;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  background-color: rgba(0, 0, 0, 0.15);
}

.site-nav__submenu.is-open {
  max-height: 300px;
}

.site-nav__submenu a {
  display: block;
  padding: 0.65rem 1.5rem 0.65rem 2.5rem;
  color: rgba(255, 255, 255, 0.9);
  font-weight: normal;
  font-size: 0.9rem;
  text-decoration: none;
}

.site-nav__submenu a:hover,
.site-nav__submenu a:focus {
  background-color: var(--color-primary-light);
  color: #fff;
  text-decoration: none;
}

/* Mobile nav overlay background */
.nav-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 140;
}

.nav-overlay.is-visible {
  display: block;
}

/* ==========================================================================
   7. MAIN CONTENT AREA
   ========================================================================== */
.site-content {
  padding: var(--space-lg) 0;
  min-height: 50vh;
}

.site-content h3:first-child {
  margin-top: 0;
}

/* ==========================================================================
   8. NEWS / ARTICLES
   ========================================================================== */
.news-article {
  margin-bottom: var(--space-xl);
}

.news-article__title {
  margin-top: var(--space-lg);
}

.news-article__meta {
  font-size: 0.85rem;
  color: var(--color-text-light);
  text-align: right;
  margin-top: var(--space-sm);
}

.news-article__image {
  margin: var(--space-md) 0;
}

.news-article__image img {
  border: 2px solid var(--color-accent);
  border-bottom-color: var(--color-accent-dark);
  border-right-color: var(--color-accent-dark);
  padding: 4px;
  background: #fff;
}

.news-archive-link {
  text-align: right;
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px dotted var(--color-border);
}

/* News archive navigation */
.news-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md) 0;
  margin-bottom: var(--space-lg);
  border-bottom: 1px dotted var(--color-border);
}

.news-nav__years {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.news-nav__years a {
  padding: 4px 8px;
  font-size: 0.85rem;
}

.news-nav__years a.is-active {
  background-color: var(--color-primary);
  color: #fff;
  border-radius: 3px;
}

/* ==========================================================================
   9. INSTRUCTOR GRID (lehrer.html)
   ========================================================================== */
.instructor-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  margin-top: var(--space-lg);
}

.instructor-card {
  text-align: center;
}

.instructor-card__photo {
  width: 150px;
  height: 225px;
  object-fit: cover;
  margin: 0 auto var(--space-sm);
  border: 2px solid var(--color-accent);
  border-bottom-color: var(--color-accent-dark);
  border-right-color: var(--color-accent-dark);
  padding: 3px;
  background: #fff;
}

.instructor-card__name {
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: bold;
  margin-bottom: var(--space-xs);
}

.instructor-card__name a {
  color: var(--color-link);
}

.instructor-card__role {
  font-size: 0.8rem;
  font-weight: bold;
  color: var(--color-text);
  margin-bottom: 2px;
}

.instructor-card__grade {
  font-size: 0.75rem;
  color: var(--color-text-light);
  line-height: 1.4;
}

/* ==========================================================================
   10. INSTRUCTOR PROFILE PAGE
   ========================================================================== */
.profile {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}

.profile__photo {
  width: 230px;
  max-width: 100%;
  border: 2px solid var(--color-accent);
  border-bottom-color: var(--color-accent-dark);
  border-right-color: var(--color-accent-dark);
  padding: 4px;
  background: #fff;
  align-self: center;
}

.profile__info {
  flex: 1;
}

.profile__info dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-sm) var(--space-md);
}

.profile__info dt {
  font-weight: bold;
  color: var(--color-text-light);
  font-size: 0.9rem;
}

.profile__info dd {
  font-size: 0.9rem;
}

/* ==========================================================================
   11. GALLERY & LIGHTBOX
   ========================================================================== */
.gallery {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin: var(--space-md) 0;
}

.gallery a {
  display: block;
  flex: 1 1 100%;
}

.gallery img,
.img-responsive {
  border: 2px solid var(--color-accent);
  border-bottom-color: var(--color-accent-dark);
  border-right-color: var(--color-accent-dark);
  padding: 4px;
  background: #fff;
  transition: opacity 0.2s ease;
}

.gallery a:hover img,
.gallery a:focus img {
  opacity: 0.85;
}

/* ==========================================================================
   12. TABLES
   ========================================================================== */
.responsive-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-md) 0;
  font-size: 0.9rem;
}

.responsive-table th,
.responsive-table td {
  padding: var(--space-sm) var(--space-md);
  text-align: left;
  border-bottom: 1px solid var(--color-border-light);
  vertical-align: top;
}

.responsive-table th {
  background-color: var(--color-bg-alt);
  font-weight: bold;
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.responsive-table tr:hover {
  background-color: var(--color-bg-alt);
}

/* Responsive table wrapper for horizontal scrolling on small screens */
.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: var(--space-md) 0;
}

/* Training schedule colored rows */
.schedule-jiu-jitsu { background-color: #f0f5f0; }
.schedule-jiudo { background-color: #f0f0f5; }

/* ==========================================================================
   13. FOOTER
   ========================================================================== */
.site-footer {
  background-color: var(--color-primary);
  color: #fff;
  padding: var(--space-lg) 0 var(--space-lg);
  margin-top: var(--space-xl);
  font-size: 0.85rem;
  line-height: 1.5;
}

.site-footer a {
  color: var(--color-accent);
  font-weight: normal;
  text-decoration: underline;
}

.site-footer a:hover,
.site-footer a:focus {
  color: #fff;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.site-footer__grid h3 {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: bold;
  color: #fff;
  margin-bottom: var(--space-sm);
  margin-top: 0;
  border-bottom: none;
  padding-bottom: 0;
}

.site-footer__contact p {
  margin-bottom: 0;
}

.site-footer__social a,
.site-footer__links a {
  display: block;
  margin-bottom: var(--space-xs);
}



/* ==========================================================================
   14. UTILITY CLASSES
   ========================================================================== */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.text-center { text-align: center; }
.text-right { text-align: right; }

.img-border {
  border: 2px solid var(--color-accent);
  border-bottom-color: var(--color-accent-dark);
  border-right-color: var(--color-accent-dark);
  padding: 4px;
  background: #fff;
}

/* Sportgutschein sidebar content (now in footer or inline) */
.info-box {
  background-color: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: var(--space-md);
  margin: var(--space-md) 0;
  font-size: 0.85rem;
}

/* ==========================================================================
   15. MEDIA QUERIES
   ========================================================================== */

/* --- Tablet (600px+) --- */
@media (min-width: 600px) {
  :root {
    --container-padding: 1.5rem;
  }

  .site-header .container {
    justify-content: center;
  }

  .site-header__logo-text {
    align-items: center;
    max-width: none;
  }

  .instructor-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .gallery a {
    flex: 1 1 calc(50% - var(--space-sm));
  }

  .profile {
    flex-direction: row;
  }

  .profile__photo {
    align-self: flex-start;
  }

  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* --- Desktop (900px+) --- */
@media (min-width: 900px) {
  :root {
    --container-padding: 2rem;
    --header-height: 125px;
  }

  /* Header */
  .logo-text__main {
    font-size: 2.5rem;
  }

  .logo-text__suffix {
    font-size: 2rem;
  }

  .logo-text__tagline {
    font-size: 0.95rem;
  }

  /* Hide hamburger */
  .nav-toggle {
    display: none;
  }

  .nav-overlay {
    display: none !important;
  }

  /* Desktop navigation */
  .site-nav {
    position: sticky;
    top: var(--header-height);
    right: auto;
    width: auto;
    height: auto;
    overflow: visible;
    padding-top: 0;
    box-shadow: none;
    background-color: var(--color-primary-light);
    transition: none;
    z-index: 99;
  }

  .site-nav .container {
    display: flex;
    justify-content: center;
  }

  .site-nav__list {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    justify-content: center;
  }

  .site-nav__item {
    border-bottom: none;
    position: relative;
  }

  .site-nav__link {
    padding: 0.75rem 1rem;
    font-size: 0.85rem;
  }

  .site-nav__link:hover,
  .site-nav__link:focus {
    background-color: rgba(255, 255, 255, 0.1);
  }

  .site-nav__link--active {
    border-left: none;
    border-bottom: 3px solid var(--color-nav-link-active);
    background-color: transparent;
  }

  /* Desktop submenu toggle hidden */
  .submenu-toggle {
    display: none;
  }

  /* Desktop submenu link wrap */
  .site-nav__item--has-submenu > .site-nav__link-wrap .site-nav__link {
    padding-right: 0.4rem;
  }

  .site-nav__item--has-submenu > .site-nav__link-wrap::after {
    content: "\25BE";
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
    padding-right: 0.5rem;
  }

  /* Desktop dropdown submenu */
  .site-nav__submenu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background-color: var(--color-primary);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.25s ease, opacity 0.25s ease;
    z-index: 200;
  }

  .site-nav__item--has-submenu:hover .site-nav__submenu,
  .site-nav__item--has-submenu:focus-within .site-nav__submenu {
    max-height: 300px;
    opacity: 1;
  }

  .site-nav__submenu a {
    padding: 0.6rem 1.2rem;
    white-space: nowrap;
  }

  /* Instructor grid 3 columns */
  .instructor-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  /* Gallery - show images side by side */
  .gallery a {
    flex: 1 1 calc(50% - var(--space-sm));
  }

  /* Footer 3 columns */
  .site-footer__grid {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

/* --- Wide (1200px+) --- */
@media (min-width: 1200px) {
  .instructor-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}