/* ============================================================
   Ziel e.V. - Website Stylesheet
   Modern, responsive design for the school care organization
   ============================================================ */

/* ============================================================
   CSS Custom Properties (Variables)
   ============================================================ */
:root {
  /* Primary Colors - Blue/Green theme */
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-primary-light: #3b82f6;
  
  --color-secondary: #059669;
  --color-secondary-dark: #047857;
  --color-secondary-light: #10b981;
  
  /* Neutral Colors */
  --color-white: #ffffff;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  
  /* Accent Colors */
  --color-accent: #f59e0b;
  --color-success: #22c55e;
  --color-warning: #eab308;
  --color-error: #ef4444;
  
  /* Gradient */
  --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  
  /* Typography */
  --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-size-base: 16px;
  --line-height-base: 1.6;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 500ms ease;
  
  /* Container */
  --container-max-width: 1200px;
  --container-padding: 1.5rem;
}

/* ============================================================
   Base Reset & Typography
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  line-height: var(--line-height-base);
  color: var(--color-gray-800);
  background-color: var(--color-white);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-gray-900);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-dark);
}

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

ul, ol {
  padding-left: var(--spacing-lg);
}

/* ============================================================
   Layout & Container
   ============================================================ */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section {
  padding: var(--spacing-3xl) 0;
}

.section--alt {
  background-color: var(--color-gray-50);
}

.section--dark {
  background: var(--gradient-primary);
  color: var(--color-white);
}

/* ============================================================
   Header & Navigation
   ============================================================ */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-white);
  box-shadow: var(--shadow-md);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--container-padding);
  max-width: var(--container-max-width);
  margin: 0 auto;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
}

.header__logo img {
  height: 50px;
  width: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav__list {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  padding: 0;
  margin: 0;
}

.nav__link {
  color: var(--color-gray-700);
  font-weight: 500;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-primary);
  background-color: var(--color-gray-100);
}

.nav__cta {
  background: var(--gradient-primary);
  color: var(--color-white) !important;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-full);
}

.nav__cta:hover {
  opacity: 0.9;
  color: var(--color-white) !important;
}

/* Mobile Menu Toggle */
.nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}

.nav__toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--color-gray-700);
  margin: 5px 0;
  transition: var(--transition-fast);
}

/* ============================================================
   Hero Section
   ============================================================ */
.hero {
  background: var(--gradient-hero);
  color: var(--color-white);
  padding: var(--spacing-3xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="rgba(255,255,255,0.05)"/></svg>');
  background-size: 200px;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.hero__title {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  color: var(--color-white);
}

.hero__subtitle {
  font-size: 1.25rem;
  opacity: 0.9;
  margin-bottom: var(--spacing-xl);
}

.hero__buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  text-decoration: none;
}

.btn--primary {
  background-color: var(--color-white);
  color: var(--color-primary);
}

.btn--primary:hover {
  background-color: var(--color-gray-100);
  color: var(--color-primary-dark);
  transform: translateY(-2px);
}

.btn--secondary {
  background-color: transparent;
  color: var(--color-white);
  border: 2px solid var(--color-white);
}

.btn--secondary:hover {
  background-color: var(--color-white);
  color: var(--color-primary);
}

.btn--accent {
  background: var(--gradient-primary);
  color: var(--color-white);
}

.btn--accent:hover {
  opacity: 0.9;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* ============================================================
   Cards
   ============================================================ */
.card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-xl);
  transition: all var(--transition-normal);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.card__icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
}

.card__title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
}

.card__text {
  color: var(--color-gray-600);
}

/* Card Grid */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
}

/* ============================================================
   Info Box / Alert
   ============================================================ */
.info-box {
  background-color: var(--color-gray-50);
  border-left: 4px solid var(--color-primary);
  padding: var(--spacing-lg);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: var(--spacing-xl) 0;
}

.info-box--warning {
  background-color: #fef3c7;
  border-left-color: var(--color-warning);
}

.info-box--success {
  background-color: #d1fae5;
  border-left-color: var(--color-success);
}

.info-box__title {
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* ============================================================
   Contact Box
   ============================================================ */
.contact-box {
  background: var(--gradient-primary);
  color: var(--color-white);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  text-align: center;
}

.contact-box h3 {
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.contact-box p {
  opacity: 0.9;
}

.contact-box a {
  color: var(--color-white);
  text-decoration: underline;
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  background-color: var(--color-gray-900);
  color: var(--color-gray-300);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
  margin-top: auto;
}

.footer__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer__title {
  color: var(--color-white);
  font-size: 1.1rem;
  margin-bottom: var(--spacing-md);
}

.footer__list {
  list-style: none;
  padding: 0;
}

.footer__list li {
  margin-bottom: var(--spacing-sm);
}

.footer__list a {
  color: var(--color-gray-400);
  transition: color var(--transition-fast);
}

.footer__list a:hover {
  color: var(--color-white);
}

.footer__bottom {
  border-top: 1px solid var(--color-gray-700);
  padding-top: var(--spacing-xl);
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-gray-500);
}

/* ============================================================
   Forms
   ============================================================ */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
  color: var(--color-gray-700);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--spacing-md);
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

/* ============================================================
   Utilities
   ============================================================ */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.mt-auto { margin-top: auto; }

.flex { display: flex; }
.flex-center { justify-content: center; align-items: center; }
.flex-col { flex-direction: column; }
.gap-1 { gap: var(--spacing-sm); }
.gap-2 { gap: var(--spacing-md); }
.gap-3 { gap: var(--spacing-lg); }

/* ============================================================
   Responsive Design
   ============================================================ */
@media (max-width: 768px) {
  :root {
    --font-size-base: 15px;
  }
  
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }
  
  .hero__title {
    font-size: 2rem;
  }
  
  .hero__subtitle {
    font-size: 1rem;
  }
  
  /* Mobile Navigation */
  .nav__list {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    flex-direction: column;
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
  }
  
  .nav__list.active {
    transform: translateX(0);
  }
  
  .nav__toggle {
    display: block;
  }
  
  .nav__cta {
    display: none;
  }
  
  .hero__buttons {
    flex-direction: column;
  }
  
  .section {
    padding: var(--spacing-xl) 0;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .card {
    padding: var(--spacing-lg);
  }
  
  .footer__grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   Page-Specific Styles
   ============================================================ */

/* Leistungen Page */
.service-list {
  list-style: none;
  padding: 0;
}

.service-list li {
  padding: var(--spacing-sm) 0;
  padding-left: var(--spacing-xl);
  position: relative;
}

.service-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-weight: bold;
}

/* Price Box */
.price-box {
  background: var(--gradient-primary);
  color: var(--color-white);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  text-align: center;
}

.price-box__amount {
  font-size: 3rem;
  font-weight: 700;
}

.price-box__period {
  opacity: 0.8;
}

/* Team Grid */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
}

.team-member {
  text-align: center;
}

.team-member__image {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto var(--spacing-md);
  border: 4px solid var(--color-primary);
}

.team-member__name {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xs);
}

.team-member__role {
  color: var(--color-gray-500);
  font-size: 0.9rem;
}

/* Legal Pages */
.legal-content h2 {
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--color-gray-200);
}

.legal-content p,
.legal-content ul {
  margin-bottom: var(--spacing-md);
}

/* ============================================================
   Multi-Step Enrollment Form
   ============================================================ */
.enrollment-form {
  max-width: 800px;
  margin: 0 auto;
  background: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  border: 1px solid var(--color-gray-200);
}

.form-header {
  background: var(--gradient-primary);
  padding: var(--spacing-xl);
  color: var(--color-white);
  text-align: center;
}

.form-header h2 {
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
}

.progress-container {
  padding: var(--spacing-lg) var(--spacing-xl) 0;
}

.progress-bar {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--spacing-xl);
  position: relative;
}

.progress-bar::before {
  content: '';
  position: absolute;
  top: 15px;
  left: 0;
  height: 2px;
  width: 100%;
  background-color: var(--color-gray-200);
  z-index: 1;
}

.progress-step {
  width: 30px;
  height: 30px;
  background-color: var(--color-white);
  border: 2px solid var(--color-gray-200);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.875rem;
  z-index: 2;
  transition: all var(--transition-normal);
  color: var(--color-gray-400);
}

.progress-step--active {
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.progress-step--completed {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

.form-step {
  padding: var(--spacing-xl);
  display: none;
}

.form-step--active {
  display: block;
  animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.form-step-title {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-lg);
  color: var(--color-gray-800);
  border-bottom: 2px solid var(--color-gray-100);
  padding-bottom: var(--spacing-sm);
}

.form-footer {
  padding: var(--spacing-lg) var(--spacing-xl);
  background-color: var(--color-gray-50);
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--color-gray-200);
}

/* Custom Checkbox/Radio */
.custom-control {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  cursor: pointer;
  padding: var(--spacing-md);
  border: 2px solid var(--color-gray-100);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.custom-control:hover {
  border-color: var(--color-gray-200);
  background-color: var(--color-gray-50);
}

.custom-control input {
  margin-top: 4px;
}

.custom-control--selected {
  border-color: var(--color-primary);
  background-color: rgba(37, 99, 235, 0.05);
}

/* IBAN Helper Style */
.iban-valid { color: var(--color-success); }
.iban-invalid { color: var(--color-error); }

/* Success Message */
.submission-success {
  text-align: center;
  padding: var(--spacing-3xl) var(--spacing-xl);
}

.submission-success icon {
  font-size: 4rem;
  color: var(--color-success);
  display: block;
  margin-bottom: var(--spacing-xl);
}

/* Grayed-out Form Overlay */
.enrollment-form--disabled {
  position: relative;
  opacity: 0.6;
  pointer-events: none;
  user-select: none;
  filter: grayscale(0.5);
}

.enrollment-form__overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.4);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  text-align: center;
  pointer-events: all; /* Allow clicking the notice box inside if needed, or just let it cover */
}

.overlay-notice {
  background: var(--color-white);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  border: 2px solid var(--color-warning);
  max-width: 500px;
}

.overlay-notice h3 {
  color: var(--color-warning);
  margin-bottom: var(--spacing-md);
}