/* ==========================================================================
   Förderverein – Styles
   Modern, ruhig, responsive. CSS Custom Properties, Flex/Grid.
   ========================================================================== */

/* -------------------------------------------------------------------------- */
/* Variables                                                                  */
/* -------------------------------------------------------------------------- */
:root {
  /* Colors – ruhige Palette: neutral + CI-Orange + Akzent */
  --color-bg: #fafafa;
  --color-bg-alt: #f0f2f4;
  --color-surface: #ffffff;
  --color-text: #1a1a1a;
  --color-text-muted: #5c5c5c;
  --color-primary: #c97a02;
  --color-primary-hover: #a86402;
  --color-primary-light: #faf0e0;
  --color-accent: #c45c26;
  --color-accent-hover: #a04a1e;
  --color-border: #e0e4e8;
  --color-error: #b91c1c;
  --color-success: #15803d;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-size-base: 1rem;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-hero: 2.5rem;
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.6;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 5rem;

  /* Layout */
  --container-max: 72rem;
  --container-narrow: 55rem;
  --header-height: 4rem;
  --radius: 6px;
  --radius-lg: 10px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
  --shadow-focus: 0 0 0 3px var(--color-primary-light);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition: 0.2s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}
a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Skip link – nur sichtbar beim Fokussieren */
.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-md);
  z-index: 100;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-primary);
  color: white;
  font-weight: 600;
  border-radius: var(--radius);
  transition: top var(--transition);
}
.skip-link:focus {
  top: var(--space-md);
  outline: 2px solid white;
  outline-offset: 2px;
}

/* -------------------------------------------------------------------------- */
/* Layout: Container                                                         */
/* -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-lg);
  padding-right: var(--space-lg);
}

.container--narrow {
  max-width: var(--container-narrow);
}

@media (min-width: 768px) {
  .container { padding-left: var(--space-xl); padding-right: var(--space-xl); }
}

/* -------------------------------------------------------------------------- */
/* Header & Navigation                                                       */
/* -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 700;
  font-size: var(--font-size-lg);
  color: var(--color-text);
  text-decoration: none;
}
.logo:hover {
  color: var(--color-primary);
  text-decoration: none;
}
.logo:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}
.logo-img {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

/* Mobile: Hamburger */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  border-radius: var(--radius);
  transition: background var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
}
.nav-toggle:hover {
  background: var(--color-bg-alt);
}
.nav-toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}
.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) 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(-7px) rotate(-45deg);
}

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

/* Nav list */
.main-nav {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-surface);
  padding: var(--space-xl);
  overflow-y: auto;
  transform: translateX(-100%);
  transition: transform var(--transition);
  visibility: hidden;
}

.main-nav.is-open {
  transform: translateX(0);
  visibility: visible;
}

@media (min-width: 768px) {
  .main-nav {
    position: static;
    padding: 0;
    overflow: visible;
    transform: none;
    visibility: visible;
  }
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

@media (min-width: 768px) {
  .nav-list {
    flex-direction: row;
    gap: 0;
    align-items: center;
  }
}

.nav-link {
  display: block;
  padding: var(--space-md) var(--space-sm);
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius);
  transition: background var(--transition-fast), color var(--transition-fast);
}
.nav-link:hover {
  color: var(--color-primary);
  background: var(--color-primary-light);
  text-decoration: none;
}
.nav-link.is-active {
  color: var(--color-primary);
  font-weight: 600;
}
.nav-link:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

@media (min-width: 768px) {
  .nav-link {
    padding: var(--space-sm) var(--space-md);
  }
}

/* -------------------------------------------------------------------------- */
/* Main                                                                      */
/* -------------------------------------------------------------------------- */
.main {
  min-height: calc(100vh - var(--header-height) - 200px);
  padding-bottom: var(--space-3xl);
}

.main:focus {
  outline: none;
}

/* -------------------------------------------------------------------------- */
/* Page (standard inner pages)                                               */
/* -------------------------------------------------------------------------- */
.page--standard .page-header {
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-xl);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.page-title {
  margin: 0 0 var(--space-sm);
  font-size: var(--font-size-3xl);
  font-weight: 700;
  line-height: var(--line-height-tight);
}

.page-lead {
  margin: 0;
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  max-width: 65ch;
}

.page-breadcrumb {
  margin: 0 0 var(--space-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}
.page-breadcrumb a:hover {
  text-decoration: underline;
}

.page-body {
  padding-top: var(--space-2xl);
}

.content-block {
  margin-bottom: var(--space-2xl);
}
.content-block h2 {
  margin: 0 0 var(--space-md);
  font-size: var(--font-size-xl);
  font-weight: 600;
}
.content-block h3 {
  margin: var(--space-lg) 0 var(--space-sm);
  font-size: var(--font-size-lg);
  font-weight: 600;
}
.content-block p,
.content-block ul {
  margin: 0 0 var(--space-md);
}
.content-block ul {
  padding-left: 1.25em;
}
.content-block--box {
  padding: var(--space-lg);
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
}

.content-note {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-lg);
}

.section-cta {
  margin: var(--space-2xl) 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

/* -------------------------------------------------------------------------- */
/* Hero (home)                                                               */
/* -------------------------------------------------------------------------- */
.hero {
  padding: var(--space-2xl) 0 var(--space-3xl);
  background: linear-gradient(180deg, var(--color-primary-light) 0%, var(--color-bg) 100%);
  border-bottom: 1px solid var(--color-border);
}

.hero .container {
  display: grid;
  gap: var(--space-2xl);
  align-items: center;
}

.hero--no-media .container {
  grid-template-columns: 1fr;
  text-align: center;
}
.hero--no-media .hero-content {
  max-width: 42rem;
  margin-left: auto;
  margin-right: auto;
}
.hero--no-media .hero-subline {
  margin-left: auto;
  margin-right: auto;
}
.hero--no-media .hero-actions {
  justify-content: center;
}

@media (min-width: 768px) {
  .hero:not(.hero--no-media) .container {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
  }
}

.hero-title {
  margin: 0 0 var(--space-md);
  font-size: var(--font-size-hero);
  font-weight: 700;
  line-height: var(--line-height-tight);
  color: var(--color-text);
}

.hero-subline {
  margin: 0 0 var(--space-xl);
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  max-width: 42ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.hero-media {
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero-img {
  width: 100%;
  max-width: 400px;
  height: auto;
  opacity: 0.9;
}

@media (max-width: 767px) {
  .hero-title {
    font-size: var(--font-size-3xl);
  }
}

/* -------------------------------------------------------------------------- */
/* Sections                                                                  */
/* -------------------------------------------------------------------------- */
.section {
  padding: var(--space-3xl) 0;
}
.section--light {
  background: var(--color-surface);
}
.section--accent {
  background: var(--color-primary);
  color: white;
}
.section--accent a {
  color: rgba(255, 255, 255, 0.95);
  text-decoration: underline;
}
.section--accent a:hover {
  color: white;
}

.section-title {
  margin: 0 0 var(--space-md);
  font-size: var(--font-size-2xl);
  font-weight: 700;
}
.section-title--light {
  color: white;
}
.section-intro {
  margin: 0 0 var(--space-xl);
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  max-width: 50ch;
}

/* -------------------------------------------------------------------------- */
/* Cards                                                                     */
/* -------------------------------------------------------------------------- */
.card-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-lg);
}
.card-grid--2 {
  grid-template-columns: 1fr;
}
.card-grid--3 {
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .card-grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }
  .card-grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .card-grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  padding: var(--space-xl);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), border-color var(--transition);
}
.card:hover {
  box-shadow: var(--shadow);
  border-color: var(--color-primary-light);
}

.card--link {
  display: block;
  color: inherit;
  text-decoration: none;
}
.card--link:hover {
  color: inherit;
  text-decoration: none;
  border-color: var(--color-primary);
}
.card--link .card-title {
  color: var(--color-primary);
}
.card--link:hover .card-title {
  color: var(--color-primary-hover);
}

.card-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}
.card-header .card-icon {
  flex-shrink: 0;
  margin-bottom: 0;
}
.card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  margin-bottom: var(--space-md);
  border: 2px solid var(--color-primary);
  border-radius: 50%;
  color: var(--color-primary);
}
.card-icon .fa-solid,
.card-icon .fa-brands {
  font-size: 1.25rem;
}
.card-title {
  margin: 0 0 var(--space-sm);
  font-size: var(--font-size-lg);
  font-weight: 600;
}
.card-header .card-title {
  margin: 0;
}
.card-text {
  margin: 0;
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
}
.card-link-text {
  display: inline-block;
  margin-top: var(--space-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary);
}

/* -------------------------------------------------------------------------- */
/* CTA grid (accent section)                                                 */
/* -------------------------------------------------------------------------- */
.cta-grid {
  display: grid;
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}
@media (min-width: 640px) {
  .cta-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.cta-box {
  padding: var(--space-xl);
  background: rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  color: white;
}
.cta-box p {
  margin: 0 0 var(--space-lg);
  opacity: 0.95;
}
.cta-box-title {
  margin: 0 0 var(--space-sm);
  font-size: var(--font-size-xl);
  font-weight: 600;
}

/* -------------------------------------------------------------------------- */
/* Buttons                                                                   */
/* -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-lg);
  font-family: inherit;
  font-size: var(--font-size-base);
  font-weight: 600;
  line-height: 1.25;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
}
.btn:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
}

.btn-primary {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  color: white;
  text-decoration: none;
}
.btn-primary:active {
  transform: translateY(1px);
}
.btn--inverse.btn-primary {
  background: white;
  color: var(--color-primary);
  border-color: white;
}
.btn--inverse.btn-primary:hover {
  background: var(--color-bg);
  color: var(--color-primary-hover);
  border-color: var(--color-bg);
}

.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-secondary:hover {
  background: var(--color-primary-light);
  color: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  text-decoration: none;
}
.btn--inverse.btn-secondary {
  color: white;
  border-color: rgba(255, 255, 255, 0.8);
}
.btn--inverse.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.2);
  color: white;
  border-color: white;
}

/* -------------------------------------------------------------------------- */
/* Termine list                                                              */
/* -------------------------------------------------------------------------- */
.termine-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}
.termin-item {
  display: grid;
  grid-template-columns: 7rem 1fr;
  gap: var(--space-lg);
  align-items: baseline;
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
}
.termin-item:last-child {
  border-bottom: none;
}
.termin-date {
  font-weight: 600;
  color: var(--color-primary);
  font-variant-numeric: tabular-nums;
}
.termin-title {
  font-weight: 600;
}
.termin-ort {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* -------------------------------------------------------------------------- */
/* Forms                                                                     */
/* -------------------------------------------------------------------------- */
.form--contact {
  max-width: 36rem;
}
.form-field {
  margin-bottom: var(--space-lg);
}
.form-field--hidden {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.form-field--checkbox {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: var(--space-sm);
}
.form-field--checkbox input[type="checkbox"] {
  margin-top: 0.25em;
  flex-shrink: 0;
  width: 1.25em;
  height: 1.25em;
  cursor: pointer;
}
.form-field--checkbox label {
  flex: 1;
  min-width: 0;
  cursor: pointer;
}

label {
  display: block;
  margin-bottom: var(--space-xs);
  font-weight: 600;
  font-size: var(--font-size-base);
}
.required {
  color: var(--color-error);
}

input[type="text"],
input[type="email"],
textarea {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  font-family: inherit;
  font-size: var(--font-size-base);
  line-height: 1.4;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
input:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}
input.has-error,
textarea.has-error,
.form-field.has-error input,
.form-field.has-error textarea {
  border-color: var(--color-error);
}
.form-error {
  display: block;
  margin-top: var(--space-xs);
  font-size: var(--font-size-sm);
  color: var(--color-error);
}
.form-hint {
  display: block;
  width: 100%;
  margin-top: var(--space-xs);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}
.form-actions {
  margin: var(--space-xl) 0 0;
}

.form-message {
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-xl);
}
.form-message--success {
  background: #dcfce7;
  border: 1px solid #86efac;
  color: var(--color-success);
}
.form-message--success p {
  margin: 0;
}

/* -------------------------------------------------------------------------- */
/* Legal (Impressum, Datenschutz)                                            */
/* -------------------------------------------------------------------------- */
.legal h2 {
  margin: var(--space-xl) 0 var(--space-md);
  font-size: var(--font-size-lg);
  font-weight: 600;
}
.legal h2:first-child {
  margin-top: 0;
}
.legal h3 {
  margin: var(--space-lg) 0 var(--space-sm);
  font-size: var(--font-size-base);
  font-weight: 600;
}
.legal p {
  margin: 0 0 var(--space-md);
}

/* -------------------------------------------------------------------------- */
/* Footer                                                                     */
/* -------------------------------------------------------------------------- */
.site-footer {
  margin-top: auto;
  padding: var(--space-2xl) 0 var(--space-xl);
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
}
.footer-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}
@media (min-width: 768px) {
  .footer-inner {
    padding: 0 var(--space-xl);
  }
}

.footer-grid {
  display: grid;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}
@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 900px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.footer-logo {
  margin: 0 0 var(--space-xs);
  font-weight: 700;
  font-size: var(--font-size-lg);
}
.footer-tagline {
  margin: 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}
.footer-heading {
  margin: 0 0 var(--space-sm);
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}
.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer-links li {
  margin-bottom: var(--space-xs);
}
.footer-links a:hover {
  text-decoration: underline;
}
.footer-contact {
  margin: 0;
  font-size: var(--font-size-sm);
}
.social-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: var(--space-md);
}
.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}
.social-links a:hover {
  color: var(--color-primary);
  text-decoration: none;
}
.social-links .fa {
  font-size: 1.25rem;
}

.footer-copy {
  margin: 0;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* -------------------------------------------------------------------------- */
/* 404                                                                       */
/* -------------------------------------------------------------------------- */
.page--404 .page-body {
  padding-top: var(--space-xl);
}