/* Secrid Miniwallet+ Landing Page - Modern Minimalism Premium Design */

/* CSS Custom Properties based on Design Tokens */
:root {
  /* Colors */
  --color-primary-50: #FDF8F3;
  --color-primary-100: #F5E6D3;
  --color-primary-500: #A67B5B;
  --color-primary-600: #8B6347;
  --color-primary-700: #6B4D38;
  
  --color-neutral-50: #FAFAFA;
  --color-neutral-100: #F5F5F5;
  --color-neutral-200: #E5E5E5;
  --color-neutral-400: #A3A3A3;
  --color-neutral-600: #525252;
  --color-neutral-900: #171717;
  
  --color-success: #16A34A;
  --color-background-page: #FAFAFA;
  --color-background-surface: #FFFFFF;
  
  /* Typography */
  --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-hero: 64px;
  --font-size-h1: 48px;
  --font-size-h2: 32px;
  --font-size-h3: 24px;
  --font-size-body-lg: 20px;
  --font-size-body: 16px;
  --font-size-small: 14px;
  --font-size-caption: 12px;
  
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  --line-height-tight: 1.1;
  --line-height-snug: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.6;
  
  --letter-spacing-tight: -0.02em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.01em;
  
  /* Spacing */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;
  --space-12: 48px;
  --space-16: 64px;
  --space-24: 96px;
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-card: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-card-hover: 0 10px 15px rgba(0,0,0,0.1), 0 4px 6px rgba(0,0,0,0.05);
  --shadow-modal: 0 20px 25px rgba(0,0,0,0.1), 0 10px 10px rgba(0,0,0,0.04);
  
  /* Animation */
  --duration-fast: 150ms;
  --duration-base: 250ms;
  --duration-slow: 350ms;
  --easing-default: ease-out;
  --easing-smooth: ease-in-out;
  
  /* Layout */
  --container-max: 1200px;
  --nav-height: 72px;
}

/* Mobile Responsive Typography */
@media (max-width: 768px) {
  :root {
    --font-size-hero: 40px;
    --font-size-h1: 32px;
    --font-size-h2: 24px;
    --font-size-body-lg: 18px;
  }
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-body);
  line-height: var(--line-height-normal);
  color: var(--color-neutral-900);
  background-color: var(--color-background-page);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--space-8);
  }
}

/* Preloader */
.preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--color-neutral-900);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity var(--duration-slow) var(--easing-smooth);
}

.preloader.hidden {
  opacity: 0;
  pointer-events: none;
}

.preloader-content {
  text-align: center;
  color: white;
}

.preloader-logo {
  margin-bottom: var(--space-4);
  animation: preloaderScale 0.6s var(--easing-default);
}

.preloader-text {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-wide);
}

@keyframes preloaderScale {
  0% { 
    opacity: 0; 
    transform: scale(0.9); 
  }
  100% { 
    opacity: 1; 
    transform: scale(1); 
  }
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-neutral-200);
  z-index: 100;
  transition: all var(--duration-base) var(--easing-default);
}

.navbar.scrolled {
  background: var(--color-background-surface);
  box-shadow: var(--shadow-sm);
}

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

.nav-brand .brand-text {
  font-size: var(--font-size-body-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-neutral-900);
}

.nav-links {
  display: none;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }
}

.nav-link {
  font-size: var(--font-size-body);
  color: var(--color-neutral-600);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  transition: color var(--duration-fast) var(--easing-default);
}

.nav-link:hover {
  color: var(--color-neutral-900);
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 var(--space-6);
  background-color: var(--color-primary-600);
  color: white;
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--duration-fast) var(--easing-default);
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  background-color: var(--color-primary-700);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-primary.btn-large {
  height: 56px;
  padding: 0 var(--space-8);
  font-size: var(--font-size-body-lg);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 var(--space-6);
  background-color: transparent;
  color: var(--color-neutral-600);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  border: 1px solid var(--color-neutral-300);
  border-radius: var(--radius-md);
  transition: all var(--duration-fast) var(--easing-default);
  cursor: pointer;
}

.btn-secondary:hover {
  background-color: var(--color-neutral-100);
  border-color: var(--color-neutral-400);
  color: var(--color-neutral-900);
}

.btn-white {
  background-color: white;
  color: var(--color-primary-600);
}

.btn-white:hover {
  background-color: var(--color-neutral-50);
}

/* Hero Section */
.hero {
  padding: calc(var(--nav-height) + var(--space-24)) 0 var(--space-24);
  min-height: 550px;
}

.hero-content {
  display: grid;
  gap: var(--space-8);
  align-items: center;
}

@media (min-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
  }
}

.hero-title {
  font-size: var(--font-size-hero);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  letter-spacing: var(--letter-spacing-tight);
  margin-bottom: var(--space-6);
  color: var(--color-neutral-900);
}

.hero-subtitle {
  font-size: var(--font-size-body-lg);
  line-height: var(--line-height-relaxed);
  color: var(--color-neutral-600);
  margin-bottom: var(--space-8);
}

.hero-ctas {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

@media (min-width: 640px) {
  .hero-ctas {
    flex-direction: row;
    gap: var(--space-6);
  }
}

.hero-trust {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.trust-badge {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-success);
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-medium);
}

.hero-image {
  position: relative;
}

.product-hero {
  width: 100%;
  height: auto;
  max-width: 500px;
  margin: 0 auto;
  display: block;
}

/* Section Titles */
.section-title {
  font-size: var(--font-size-h1);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-snug);
  text-align: center;
  margin-bottom: var(--space-12);
  color: var(--color-neutral-900);
}

/* Features Section */
.features {
  padding: var(--space-24) 0;
  background-color: var(--color-background-surface);
}

.features-grid {
  display: grid;
  gap: var(--space-8);
}

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

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

.feature-card {
  padding: var(--space-8);
  background: var(--color-background-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-neutral-100);
  box-shadow: var(--shadow-sm);
  transition: all var(--duration-base) var(--easing-default);
  text-align: center;
}

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

.feature-icon {
  color: var(--color-primary-500);
  margin-bottom: var(--space-4);
}

.feature-title {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-3);
  color: var(--color-neutral-900);
}

.feature-description {
  color: var(--color-neutral-600);
  line-height: var(--line-height-relaxed);
}

/* Specifications Section */
.specs {
  padding: var(--space-24) 0;
}

.specs-content {
  display: grid;
  gap: var(--space-12);
  align-items: center;
}

@media (min-width: 1024px) {
  .specs-content {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
  }
}

.specs-detail-image {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.specs-list {
  margin-bottom: var(--space-8);
}

.spec-item {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  align-items: flex-start;
}

.spec-icon {
  color: var(--color-primary-500);
  flex-shrink: 0;
  margin-top: var(--space-1);
}

.spec-title {
  font-size: var(--font-size-body-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-2);
  color: var(--color-neutral-900);
}

.spec-description {
  color: var(--color-neutral-600);
  line-height: var(--line-height-relaxed);
}

.capacity-image {
  width: 100%;
  max-width: 300px;
  height: auto;
  border-radius: var(--radius-md);
  margin-top: var(--space-6);
}

/* Colors Section */
.colors {
  padding: var(--space-20) 0;
  background-color: var(--color-primary-50);
}

.color-selector {
  margin-bottom: var(--space-12);
}

.color-swatches {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.color-swatch {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-3);
  border-radius: var(--radius-md);
  transition: all var(--duration-fast) var(--easing-default);
}

.color-swatch:hover {
  transform: scale(1.1);
}

.color-swatch.active {
  border: 2px solid var(--color-primary-600);
  background-color: var(--color-background-surface);
  box-shadow: var(--shadow-sm);
}

.swatch-color {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-sm);
}

.swatch-label {
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-medium);
  color: var(--color-neutral-600);
}

.color-product-display {
  margin-bottom: var(--space-8);
}

.color-product-image {
  width: 100%;
  max-width: 500px;
  height: auto;
  margin: 0 auto;
  display: block;
}

.color-cta {
  text-align: center;
}

/* Testimonials Section */
.testimonials {
  padding: var(--space-20) 0;
  background-color: var(--color-background-surface);
}

.testimonials-rating {
  text-align: center;
  margin-bottom: var(--space-12);
}

.rating-stars {
  display: flex;
  justify-content: center;
  gap: var(--space-1);
  margin-bottom: var(--space-2);
}

.rating-text {
  font-size: var(--font-size-body-lg);
  color: var(--color-neutral-600);
  font-weight: var(--font-weight-medium);
}

.testimonials-grid {
  display: grid;
  gap: var(--space-8);
}

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

.testimonial-card {
  padding: var(--space-8);
  background: var(--color-background-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-neutral-100);
}

.testimonial-quote {
  font-size: var(--font-size-body-lg);
  font-style: italic;
  line-height: var(--line-height-relaxed);
  color: var(--color-neutral-900);
  margin-bottom: var(--space-6);
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.author-avatar {
  width: 40px;
  height: 40px;
  background-color: var(--color-primary-100);
  color: var(--color-primary-600);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-small);
}

.author-name {
  font-weight: var(--font-weight-semibold);
  color: var(--color-neutral-900);
  font-size: var(--font-size-small);
}

.author-role {
  color: var(--color-neutral-600);
  font-size: var(--font-size-caption);
}

/* FAQ Section */
.faq {
  padding: var(--space-20) 0;
  background-color: var(--color-background-page);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  margin-bottom: var(--space-4);
  border-radius: var(--radius-lg);
  background: var(--color-background-surface);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-neutral-100);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: var(--space-6);
  background: none;
  border: none;
  text-align: left;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  cursor: pointer;
  transition: all var(--duration-fast) var(--easing-default);
}

.faq-question:hover {
  background-color: var(--color-neutral-50);
}

.question-text {
  font-size: var(--font-size-body-lg);
  font-weight: var(--font-weight-medium);
  color: var(--color-neutral-900);
  line-height: var(--line-height-relaxed);
}

.faq-icon {
  color: var(--color-primary-500);
  transition: transform var(--duration-base) var(--easing-smooth);
  flex-shrink: 0;
}

.faq-item.open .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-base) var(--easing-smooth);
  padding: 0 var(--space-6);
}

.faq-item.open .faq-answer {
  padding: 0 var(--space-6) var(--space-6);
}

.faq-answer p {
  font-size: var(--font-size-body);
  line-height: var(--line-height-relaxed);
  color: var(--color-neutral-600);
  margin: 0;
}

@media (max-width: 768px) {
  .faq {
    padding: var(--space-16) 0;
  }
  
  .faq-question {
    padding: var(--space-4);
  }
  
  .question-text {
    font-size: var(--font-size-body);
  }
  
  .faq-item.open .faq-answer {
    padding: 0 var(--space-4) var(--space-4);
  }
}

/* Final CTA Section */
.final-cta {
  padding: var(--space-20) 0;
  background-color: var(--color-neutral-900);
  color: white;
}

.final-cta-content {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.final-cta-title {
  font-size: var(--font-size-h1);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-6);
}

.final-cta-subtitle {
  font-size: var(--font-size-body-lg);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-8);
  opacity: 0.9;
}

.trust-elements {
  display: flex;
  justify-content: center;
  gap: var(--space-8);
  margin-top: var(--space-8);
  flex-wrap: wrap;
}

.trust-element {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-small);
  opacity: 0.8;
}

.trust-element svg {
  flex-shrink: 0;
}

/* Footer */
.footer {
  padding: var(--space-12) 0;
  background-color: var(--color-neutral-100);
  border-top: 1px solid var(--color-neutral-200);
}

.footer-disclaimer {
  margin-bottom: var(--space-6);
}

.disclaimer-text {
  font-size: var(--font-size-small);
  color: var(--color-neutral-600);
  line-height: var(--line-height-relaxed);
  text-align: center;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: var(--space-8);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}

.footer-link {
  background: none;
  border: none;
  color: var(--color-neutral-600);
  font-size: var(--font-size-small);
  text-decoration: underline;
  cursor: pointer;
  transition: color var(--duration-fast) var(--easing-default);
}

.footer-link:hover {
  color: var(--color-neutral-900);
}

.footer-copyright {
  text-align: center;
}

.copyright-text {
  font-size: var(--font-size-caption);
  color: var(--color-neutral-400);
}

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-base) var(--easing-default);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--color-background-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-modal);
  max-width: 640px;
  max-height: 80vh;
  width: 90%;
  overflow: hidden;
  transform: scale(0.95);
  transition: transform var(--duration-slow) var(--easing-smooth);
}

.modal-overlay.active .modal {
  transform: scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6);
  border-bottom: 1px solid var(--color-neutral-200);
}

.modal-title {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-semibold);
  color: var(--color-neutral-900);
}

.modal-close {
  background: none;
  border: none;
  color: var(--color-neutral-600);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--easing-default);
}

.modal-close:hover {
  background-color: var(--color-neutral-100);
  color: var(--color-neutral-900);
}

.modal-content {
  padding: var(--space-6);
  max-height: calc(80vh - 100px);
  overflow-y: auto;
}

.modal-content h4 {
  font-size: var(--font-size-body-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-4);
  margin-top: var(--space-6);
  color: var(--color-neutral-900);
}

.modal-content h4:first-child {
  margin-top: 0;
}

.modal-content p {
  margin-bottom: var(--space-4);
  line-height: var(--line-height-relaxed);
  color: var(--color-neutral-600);
}

.modal-content ul {
  margin: var(--space-4) 0;
  padding-left: var(--space-6);
}

.modal-content li {
  margin-bottom: var(--space-2);
  line-height: var(--line-height-relaxed);
  color: var(--color-neutral-600);
}

/* Scroll Reveals */
@media (prefers-reduced-motion: no-preference) {
  .feature-card,
  .testimonial-card {
    opacity: 0;
    transform: translateY(24px);
    animation: scrollReveal var(--duration-base) var(--easing-default) forwards;
  }

  .feature-card:nth-child(2) { animation-delay: 100ms; }
  .feature-card:nth-child(3) { animation-delay: 200ms; }
  .feature-card:nth-child(4) { animation-delay: 300ms; }
  .feature-card:nth-child(5) { animation-delay: 400ms; }
  .feature-card:nth-child(6) { animation-delay: 500ms; }

  .testimonial-card:nth-child(2) { animation-delay: 100ms; }
  .testimonial-card:nth-child(3) { animation-delay: 200ms; }
}

@keyframes scrollReveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .feature-card:hover,
  .color-swatch:hover {
    transform: none;
  }
}

/* Loading States */
.btn-primary:disabled,
.btn-secondary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

/* Touch Targets */
@media (max-width: 768px) {
  .color-swatch {
    min-width: 44px;
    min-height: 44px;
  }
}