/* ============================================
   KLINARO.SHOP - Modern Survey Website Styles
   ============================================ */

/* CSS Variables - Design System */
:root {
  /* Colors - Modern Gradient Palette */
  --primary-blue: #2563eb;
  --primary-cyan: #06b6d4;
  --primary-gradient: linear-gradient(135deg, #2563eb 0%, #06b6d4 100%);
  --dark-bg: #0f172a;
  --dark-card: #1e293b;
  --light-bg: #f8fafc;
  --light-card: #ffffff;
  --text-dark: #0f172a;
  --text-light: #64748b;
  --text-white: #ffffff;
  --border-color: #e2e8f0;
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
}

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-dark);
  background: var(--light-bg);
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--text-dark);
}

h1 {
  font-size: var(--font-size-4xl);
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: var(--font-size-3xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--text-light);
  line-height: 1.8;
}

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

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

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Header */
header {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: all var(--transition-base);
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--font-size-xl);
  font-weight: 800;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo img {
  height: 40px;
  width: auto;
}

/* Navigation */
nav ul {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  align-items: center;
}

nav a {
  font-weight: 500;
  color: var(--text-dark);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  position: relative;
}

nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 80%;
  height: 2px;
  background: var(--primary-gradient);
  transition: transform var(--transition-base);
}

nav a:hover::after {
  transform: translateX(-50%) scaleX(1);
}

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

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.menu-toggle span {
  width: 25px;
  height: 3px;
  background: var(--primary-gradient);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

/* Hero Section */
.hero {
  background: var(--primary-gradient);
  color: var(--text-white);
  padding: var(--spacing-2xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  animation: float 6s ease-in-out infinite;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -5%;
  width: 400px;
  height: 400px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 50%;
  animation: float 8s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(-20px) rotate(5deg);
  }
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero h1 {
  -webkit-text-fill-color: var(--text-white);
  margin-bottom: var(--spacing-md);
  animation: fadeInUp 0.8s ease-out;
}

.hero p {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.9);
  max-width: 700px;
  margin: 0 auto var(--spacing-lg);
  animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: 600;
  text-align: center;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  border: none;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width var(--transition-slow), height var(--transition-slow);
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: var(--text-white);
  color: var(--primary-blue);
  box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.btn-secondary {
  background: var(--primary-gradient);
  color: var(--text-white);
  box-shadow: var(--shadow-md);
}

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

.btn-outline {
  background: transparent;
  color: var(--primary-blue);
  border: 2px solid var(--primary-blue);
}

.btn-outline:hover {
  background: var(--primary-blue);
  color: var(--text-white);
}

/* Cards */
.card {
  background: var(--light-card);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  border: 1px solid var(--border-color);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.card-glass {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

/* Progress Bar */
.progress-container {
  background: var(--light-card);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  box-shadow: var(--shadow-md);
}

.progress-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-sm);
}

.progress-label {
  font-weight: 600;
  color: var(--text-dark);
}

.progress-percentage {
  font-weight: 700;
  font-size: var(--font-size-lg);
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.progress-bar-bg {
  width: 100%;
  height: 12px;
  background: var(--border-color);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.progress-bar-fill {
  height: 100%;
  background: var(--primary-gradient);
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
  position: relative;
  overflow: hidden;
}

.progress-bar-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

/* Question Section */
.question-section {
  max-width: 900px;
  margin: var(--spacing-xl) auto;
  padding: 0 var(--spacing-md);
}

.question-card {
  background: var(--light-card);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-lg);
  margin-bottom: var(--spacing-lg);
}

.question-title {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-lg);
  color: var(--text-dark);
}

.question-content {
  margin-bottom: var(--spacing-xl);
  line-height: 1.8;
  color: var(--text-light);
}

.question-content h3 {
  color: var(--text-dark);
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

.question-content ul, .question-content ol {
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.question-content li {
  margin-bottom: var(--spacing-xs);
  color: var(--text-light);
}

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

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-dark);
}

.radio-group, .checkbox-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.radio-option, .checkbox-option {
  display: flex;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  background: var(--light-bg);
}

.radio-option:hover, .checkbox-option:hover {
  border-color: var(--primary-blue);
  background: rgba(37, 99, 235, 0.05);
}

.radio-option input, .checkbox-option input {
  margin-right: var(--spacing-sm);
  width: 20px;
  height: 20px;
  cursor: pointer;
  accent-color: var(--primary-blue);
}

.radio-option label, .checkbox-option label {
  cursor: pointer;
  flex: 1;
  font-weight: 500;
}

input[type="text"],
input[type="email"],
input[type="tel"],
textarea {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  transition: all var(--transition-fast);
  background: var(--light-bg);
}

input:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

/* Navigation Buttons */
.nav-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: space-between;
  margin-top: var(--spacing-xl);
}

.nav-buttons .btn {
  flex: 1;
  max-width: 200px;
}

/* Content Section */
.content-section {
  max-width: 900px;
  margin: var(--spacing-xl) auto;
  padding: var(--spacing-xl) var(--spacing-md);
}

.content-card {
  background: var(--light-card);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  margin-bottom: var(--spacing-lg);
}

.content-card h2 {
  border-bottom: 3px solid;
  border-image: var(--primary-gradient) 1;
  padding-bottom: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.content-card h3 {
  margin-top: var(--spacing-lg);
}

.content-card ul {
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.content-card li {
  margin-bottom: var(--spacing-xs);
}

/* Footer */
footer {
  background: var(--dark-bg);
  color: var(--text-white);
  padding: var(--spacing-xl) 0 var(--spacing-md);
  margin-top: var(--spacing-2xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
}

.footer-section h3 {
  color: var(--text-white);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-lg);
}

.footer-section p,
.footer-section a {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--spacing-xs);
  display: block;
}

.footer-section a:hover {
  color: var(--primary-cyan);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-xs);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-md);
  text-align: center;
  color: rgba(255, 255, 255, 0.5);
  font-size: var(--font-size-sm);
}

/* Cookie Consent Banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--dark-card);
  color: var(--text-white);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-xl);
  z-index: 9999;
  transform: translateY(100%);
  transition: transform var(--transition-base);
}

.cookie-banner.show {
  transform: translateY(0);
}

.cookie-banner .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.cookie-banner p {
  color: rgba(255, 255, 255, 0.9);
  margin: 0;
  flex: 1;
  min-width: 250px;
}

.cookie-banner a {
  color: var(--primary-cyan);
  text-decoration: underline;
}

.cookie-buttons {
  display: flex;
  gap: var(--spacing-sm);
}

/* Responsive Design */
@media (max-width: 768px) {
  :root {
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.75rem;
    --font-size-2xl: 1.5rem;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  nav ul {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    flex-direction: column;
    padding: var(--spacing-md);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-base);
  }
  
  nav ul.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }
  
  nav a {
    width: 100%;
    padding: var(--spacing-sm);
  }
  
  .hero {
    padding: var(--spacing-xl) 0;
  }
  
  .nav-buttons {
    flex-direction: column;
  }
  
  .nav-buttons .btn {
    max-width: 100%;
  }
  
  .cookie-banner .container {
    flex-direction: column;
    text-align: center;
  }
  
  .cookie-buttons {
    width: 100%;
    flex-direction: column;
  }
  
  .cookie-buttons .btn {
    width: 100%;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .question-card,
  .content-card {
    padding: var(--spacing-md);
  }
}

/* Utility Classes */
.text-center {
  text-align: center;
}

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

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.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); }

.hidden {
  display: none;
}

/* Animations */
.fade-in {
  animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.slide-in-up {
  animation: slideInUp 0.5s ease-out;
}

@keyframes slideInUp {
  from {
    transform: translateY(30px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}