/* Jonas Kühn Getränkehandel - Premium Design System & Styles */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
  /* Colors */
  --bg-primary: #080c16;
  --bg-secondary: #0f172a;
  --bg-tertiary: #1e293b;
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --accent-primary: #00f2fe;     /* Refreshing neon cyan */
  --accent-secondary: #4facfe;   /* Deep cooling blue */
  --accent-orange: #ff9f43;      /* Sparkling active orange */
  --accent-success: #10b981;     /* Success emerald */
  --accent-error: #f43f5e;       /* Error rose */
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--accent-secondary) 0%, var(--accent-primary) 100%);
  --gradient-glow: linear-gradient(135deg, rgba(79, 172, 254, 0.15) 0%, rgba(0, 242, 254, 0.15) 100%);
  --gradient-dark: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  --gradient-accent-orange: linear-gradient(135deg, #ff9f43 0%, #ff5252 100%);

  /* Glassmorphism */
  --glass-bg: rgba(15, 23, 42, 0.65);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-border-hover: rgba(0, 242, 254, 0.25);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --glass-blur: blur(16px);
  
  /* Layout */
  --container-max-width: 1200px;
  --header-height: 80px;
  --border-radius-sm: 8px;
  --border-radius-md: 16px;
  --border-radius-lg: 24px;
  
  /* Fonts */
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  
  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base resets & styles */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  background-color: var(--bg-primary);
  background-image: radial-gradient(circle at 10% 20%, rgba(0, 242, 254, 0.05) 0%, transparent 40%),
                    radial-gradient(circle at 90% 80%, rgba(79, 172, 254, 0.05) 0%, transparent 40%);
  background-attachment: fixed;
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
  font-size: clamp(2rem, 4vw, 2.75rem);
  margin-bottom: 1.5rem;
  position: relative;
  display: inline-block;
}

h2::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 40px;
  height: 3px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-bottom: 1.5rem;
}

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

a:hover {
  color: var(--accent-secondary);
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.section {
  padding-top: 6rem;
  padding-bottom: 6rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Glassmorphism Card base */
.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-md);
  padding: 2.5rem;
  box-shadow: var(--glass-shadow);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.glass-card:hover {
  border-color: var(--glass-border-hover);
  box-shadow: 0 12px 40px 0 rgba(0, 242, 254, 0.1);
  transform: translateY(-4px);
}

/* Navbar */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  background: rgba(8, 12, 22, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
  transition: background var(--transition-normal), height var(--transition-normal);
}

.header.scrolled {
  height: 70px;
  background: rgba(8, 12, 22, 0.9);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.4rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  transition: opacity var(--transition-fast);
}

.logo:hover {
  opacity: 0.9;
}

.logo-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: var(--bg-primary);
  font-size: 1.1rem;
  font-weight: bold;
  -webkit-text-fill-color: var(--bg-primary);
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 1.05rem;
  position: relative;
  padding: 0.5rem 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

/* Burger menu for Mobile */
.burger {
  display: none;
  cursor: pointer;
  background: none;
  border: none;
  z-index: 1001;
  padding: 0.5rem;
}

.burger span {
  display: block;
  width: 25px;
  height: 2px;
  background-color: var(--text-primary);
  margin: 5px 0;
  transition: all var(--transition-normal);
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background: var(--bg-secondary);
    border-left: 1px solid var(--glass-border);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 3rem;
    transition: right var(--transition-normal);
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
  }

  .nav-links.active {
    right: 0;
  }

  .burger {
    display: block;
  }

  .burger.toggle span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
  }

  .burger.toggle span:nth-child(2) {
    opacity: 0;
  }

  .burger.toggle span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.85rem 2rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.05rem;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  border: none;
  min-height: 48px;
  text-align: center;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--bg-primary);
  box-shadow: 0 4px 15px rgba(0, 242, 254, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 242, 254, 0.45);
  color: var(--bg-primary);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--text-secondary);
  transform: translateY(-2px);
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--header-height) + 2rem);
  padding-bottom: 4rem;
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-subtitle {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 1rem;
}

.hero-title span {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-text {
  font-size: 1.2rem;
  max-width: 600px;
  margin-top: 1.5rem;
  margin-bottom: 2.5rem;
}

.hero-buttons {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

/* Features/Services section */
.feature-card {
  text-align: left;
}

.feature-icon {
  width: 54px;
  height: 54px;
  border-radius: var(--border-radius-sm);
  background: var(--gradient-glow);
  border: 1px solid rgba(0, 242, 254, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--accent-primary);
  font-size: 1.75rem;
}

/* Drink Calculator Styles */
.calculator-section {
  position: relative;
}

.calc-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

@media (min-width: 992px) {
  .calc-container {
    grid-template-columns: 1.2fr 0.8fr;
  }
}

.calc-form-group {
  margin-bottom: 2rem;
}

.calc-label {
  display: block;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.calc-select {
  width: 100%;
  padding: 0.85rem 1.25rem;
  font-size: 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-sm);
  color: var(--text-primary);
  outline: none;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 1.25rem center;
  background-size: 1.2em;
  transition: border-color var(--transition-fast);
}

.calc-select:focus {
  border-color: var(--accent-primary);
}

/* Checkbox Grid for Drink Types */
.drink-checkbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
}

.drink-checkbox-card {
  position: relative;
}

.drink-checkbox-card input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.drink-checkbox-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.25rem 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
  gap: 0.5rem;
  user-select: none;
}

.drink-checkbox-card input[type="checkbox"]:checked + .drink-checkbox-label {
  background: var(--gradient-glow);
  border-color: var(--accent-primary);
  color: var(--text-primary);
  box-shadow: 0 0 15px rgba(0, 242, 254, 0.1);
}

.drink-checkbox-card input[type="checkbox"]:focus-visible + .drink-checkbox-label {
  outline: 2px solid var(--accent-primary);
}

.drink-checkbox-icon {
  font-size: 1.5rem;
}

.drink-checkbox-text {
  font-size: 0.95rem;
  font-weight: 500;
}

/* Slider Style */
.slider-container {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.slider-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.slider-value {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent-primary);
}

.calc-range {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--bg-secondary);
  outline: none;
  margin-top: 0.75rem;
}

.calc-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent-primary);
  cursor: pointer;
  box-shadow: 0 0 10px rgba(0, 242, 254, 0.5);
  transition: transform var(--transition-fast);
}

.calc-range::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.calc-range::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border: none;
  border-radius: 50%;
  background: var(--accent-primary);
  cursor: pointer;
  box-shadow: 0 0 10px rgba(0, 242, 254, 0.5);
  transition: transform var(--transition-fast);
}

.calc-range::-moz-range-thumb:hover {
  transform: scale(1.2);
}

/* Calculator Results */
.calc-results-card {
  background: var(--gradient-glow);
  border: 1px solid rgba(0, 242, 254, 0.15);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.calc-results-header {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 1.5rem;
  margin-bottom: 1.5rem;
}

.calc-results-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.calc-results-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1.05rem;
}

.calc-results-name {
  color: var(--text-secondary);
}

.calc-results-val {
  font-weight: 700;
  color: var(--text-primary);
}

.calc-total-box {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(8, 12, 22, 0.5);
  padding: 1.25rem;
  border-radius: var(--border-radius-sm);
  border: 1px solid rgba(0, 242, 254, 0.1);
  margin-top: auto;
  margin-bottom: 2rem;
}

.calc-total-label {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.1rem;
}

.calc-total-amount {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--accent-primary);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Contact Form & Input Styling */
.form-card {
  max-width: 700px;
  margin: 0 auto;
}

.form-group {
  position: relative;
  margin-bottom: 2rem;
}

.form-label {
  display: block;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  transition: color var(--transition-fast);
}

.form-input {
  width: 100%;
  min-height: 48px;
  padding: 0.85rem 1.25rem;
  font-family: var(--font-body);
  font-size: 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-sm);
  color: var(--text-primary);
  outline: none;
  box-sizing: border-box;
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

textarea.form-input {
  min-height: 120px;
  resize: vertical;
}

.form-input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 10px rgba(0, 242, 254, 0.15);
}

/* User verification states using :user-valid */
.form-input:user-valid {
  border-color: var(--accent-success);
}

.form-input:user-invalid {
  border-color: var(--accent-error);
}

/* Error message helper styling */
.form-error-msg {
  display: none;
  font-size: 0.85rem;
  color: var(--accent-error);
  margin-top: 0.4rem;
}

.form-input:user-invalid + .form-error-msg {
  display: block;
}

/* Contact cards page structure */
.contact-cards-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 4rem;
}

@media (min-width: 768px) {
  .contact-cards-container {
    grid-template-columns: repeat(2, 1fr);
  }
}

.contact-info-card {
  text-align: center;
  padding: 2rem;
}

.contact-info-icon {
  font-size: 2.25rem;
  color: var(--accent-primary);
  margin-bottom: 1.25rem;
}

.contact-info-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
}

.contact-info-text {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Legal notice styling */
.legal-card {
  padding: 3rem;
}

.legal-section {
  margin-bottom: 2.5rem;
}

.legal-section h3 {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 0.5rem;
  margin-bottom: 1.25rem;
}

.legal-section p {
  margin-bottom: 1rem;
  font-size: 1rem;
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--glass-border);
  padding-top: 4rem;
  padding-bottom: 3rem;
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

@media (min-width: 768px) {
  .footer-content {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-tagline {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.footer-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.footer-links a:hover {
  color: var(--text-primary);
}

.copyright {
  text-align: center;
  margin-top: 3rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 2rem;
}

/* Interactive Notification/Toast */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--bg-secondary);
  border: 1px solid var(--accent-success);
  color: var(--text-primary);
  padding: 1rem 1.5rem;
  border-radius: var(--border-radius-sm);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transform: translateY(150%);
  transition: transform var(--transition-normal);
  z-index: 1100;
}

.toast.show {
  transform: translateY(0);
}

.toast-icon {
  color: var(--accent-success);
  font-size: 1.25rem;
}