/* ===============================================
   AFINADOR VIOLA CAIPIRA - STYLESHEET
   Design System replicado do app Flutter
   =============================================== */

/* CSS Variables - Design System */
:root {
  /* Cores Principais */
  --bg-dark: #1A1512;
  --surface-dark: #2A2320;
  --card-dark: #3A3330;
  --primary-wood: #8B6F47;
  --secondary-earth: #D4A574;
  --accent-green: #6B8E23;
  --error-red: #A13D2D;
  --border-color: #5A4F47;
  --text-primary: #F5F5F5;
  --text-secondary: #BFBFBF;

  /* Tipografia */
  --font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-hero: 48px;
  --font-size-heading: 32px;
  --font-size-subheading: 24px;
  --font-size-body: 18px;
  --font-size-button: 20px;
  --font-size-small: 16px;
  --font-size-label: 14px;

  /* Espaçamento */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 48px;
  --spacing-xl: 96px;
  --spacing-2xl: 128px;

  /* Borders & Shadows */
  --border-radius: 20px;
  --border-radius-sm: 12px;
  --border-radius-button: 25px;
  --shadow-card: 0 8px 15px rgba(0, 0, 0, 0.3);
  --shadow-elevated: 0 12px 24px rgba(0, 0, 0, 0.4);
  --shadow-button: 0 4px 12px rgba(107, 142, 35, 0.4);

  /* Animações */
  --transition-fast: 250ms ease-in-out;
  --transition-medium: 400ms ease-in-out;

  /* Container */
  --container-max-width: 1200px;
  --container-padding: 16px;
}

/* Mobile adjustments */
@media (max-width: 768px) {
  :root {
    --font-size-hero: 32px;
    --font-size-heading: 28px;
    --font-size-subheading: 20px;
    --spacing-lg: 32px;
    --spacing-xl: 64px;
    --spacing-2xl: 96px;
  }
}

/* ===============================================
   CSS RESET E BASE
   =============================================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background: linear-gradient(180deg, var(--bg-dark) 0%, var(--surface-dark) 100%);
  background-attachment: fixed;
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: var(--font-size-body);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

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

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

a:hover {
  opacity: 0.8;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul {
  list-style: none;
}

/* ===============================================
   UTILITY CLASSES
   =============================================== */

.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section-title {
  font-size: var(--font-size-heading);
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--spacing-lg);
  color: var(--text-primary);
}

/* ===============================================
   COMPONENTS - CARDS
   =============================================== */

.card {
  background: linear-gradient(135deg,
    rgba(58, 51, 48, 0.8),
    rgba(42, 35, 32, 0.6));
  border: 1.5px solid rgba(90, 79, 71, 0.3);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

/* ===============================================
   COMPONENTS - BUTTONS
   =============================================== */

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--accent-green), rgba(107, 142, 35, 0.8));
  color: var(--text-primary);
  font-size: var(--font-size-button);
  font-weight: 600;
  padding: 16px 48px;
  border: 3px solid var(--accent-green);
  border-radius: var(--border-radius-button);
  box-shadow: var(--shadow-button);
  transition: all var(--transition-fast);
  min-height: 44px;
  touch-action: manipulation;
}

.btn-primary:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 20px rgba(107, 142, 35, 0.6);
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-large {
  padding: 20px 60px;
  font-size: 22px;
}

.play-badge {
  height: 60px;
  width: auto;
}

/* ===============================================
   HERO SECTION
   =============================================== */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: var(--spacing-xl) var(--spacing-sm);
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  align-items: center;
}

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

.hero-text {
  text-align: center;
}

@media (min-width: 1024px) {
  .hero-text {
    text-align: left;
  }
}

.hero-title {
  font-size: var(--font-size-hero);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
  line-height: 1.2;
}

.hero-tagline {
  font-size: var(--font-size-subheading);
  font-weight: 600;
  color: var(--secondary-earth);
  margin-bottom: var(--spacing-sm);
}

.hero-description {
  font-size: var(--font-size-body);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.8;
}

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.app-screenshot {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-elevated);
}

@media (min-width: 1024px) {
  .app-screenshot {
    max-width: 320px;
  }
}

@media (max-width: 1023px) {
  .app-screenshot {
    max-width: 280px;
  }
}

/* ===============================================
   VIDEO DEMO SECTION
   =============================================== */

.demo-video {
  padding: var(--spacing-2xl) var(--spacing-sm);
  text-align: center;
}

.video-wrapper {
  max-width: 350px;
  margin: 0 auto;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-elevated);
  background: var(--card-dark);
}

.hero-video {
  width: 100%;
  height: auto;
  display: block;
  background: var(--card-dark);
}

/* ===============================================
   FEATURES SECTION
   =============================================== */

.features {
  padding: var(--spacing-2xl) var(--spacing-sm);
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

@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(--spacing-md);
  text-align: center;
}

.feature-image-wrapper {
  margin-bottom: var(--spacing-sm);
}

.feature-image {
  width: 100%;
  max-width: 280px;
  height: auto;
  margin: 0 auto;
  border-radius: var(--border-radius-sm);
}

.feature-title {
  font-size: var(--font-size-subheading);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--secondary-earth);
}

.feature-description {
  font-size: var(--font-size-small);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  line-height: 1.7;
}

.feature-list {
  text-align: left;
  margin-bottom: var(--spacing-md);
}

.feature-list li {
  font-size: var(--font-size-small);
  color: var(--text-primary);
  padding: var(--spacing-xs) 0;
  padding-left: var(--spacing-md);
  position: relative;
}

.feature-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent-green);
  font-weight: 700;
}

/* ===============================================
   GALLERY SECTION
   =============================================== */

.gallery {
  padding: var(--spacing-2xl) var(--spacing-sm);
}

.gallery-carousel {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--primary-wood) var(--surface-dark);
}

.gallery-carousel::-webkit-scrollbar {
  height: 8px;
}

.gallery-carousel::-webkit-scrollbar-track {
  background: var(--surface-dark);
  border-radius: 4px;
}

.gallery-carousel::-webkit-scrollbar-thumb {
  background: var(--primary-wood);
  border-radius: 4px;
}

.carousel-track {
  display: flex;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
  scroll-snap-type: x mandatory;
}

.gallery-image {
  flex: 0 0 280px;
  height: auto;
  border-radius: var(--border-radius-sm);
  box-shadow: var(--shadow-card);
  cursor: pointer;
  transition: transform var(--transition-fast);
  scroll-snap-align: center;
}

.gallery-image:hover {
  transform: scale(1.05);
}

@media (min-width: 768px) {
  .gallery-image {
    flex: 0 0 320px;
  }
}

/* ===============================================
   SPECS SECTION
   =============================================== */

.specs {
  padding: var(--spacing-2xl) var(--spacing-sm);
}

.specs-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
}

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

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

.spec-card {
  padding: var(--spacing-md);
  text-align: center;
}

.spec-icon {
  font-size: 48px;
  margin-bottom: var(--spacing-sm);
}

.spec-title {
  font-size: var(--font-size-subheading);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--secondary-earth);
}

.spec-description {
  font-size: var(--font-size-small);
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===============================================
   SEJA PARCEIRO SECTION
   =============================================== */

.seja-parceiro {
  padding: var(--spacing-2xl) var(--spacing-sm);
}

.parceiro-card {
  max-width: 700px;
  margin: 0 auto;
  padding: var(--spacing-xl);
  text-align: center;
  background: linear-gradient(
    135deg,
    rgba(107, 142, 35, 0.15) 0%,
    rgba(107, 142, 35, 0.05) 100%
  );
  border: 2px solid rgba(107, 142, 35, 0.3);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.4);
  animation: pulse-border 3s ease-in-out infinite;
}

@keyframes pulse-border {
  0%, 100% {
    border-color: rgba(107, 142, 35, 0.3);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.4);
  }
  50% {
    border-color: rgba(107, 142, 35, 0.6);
    box-shadow: 0 12px 32px rgba(107, 142, 35, 0.3);
  }
}

.parceiro-icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-md);
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

.parceiro-title {
  font-size: var(--font-size-heading);
  font-weight: 700;
  color: var(--accent-green);
  margin-bottom: var(--spacing-md);
  line-height: 1.3;
}

@media (max-width: 768px) {
  .parceiro-title {
    font-size: var(--font-size-subheading);
  }
}

.parceiro-description {
  font-size: var(--font-size-body);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.7;
}

.parceiro-contacts {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  align-items: center;
}

.contact-item {
  width: 100%;
}

.contact-label {
  font-size: var(--font-size-body);
  font-weight: 700;
  color: var(--secondary-earth);
  display: block;
  margin-bottom: var(--spacing-sm);
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(42, 35, 32, 0.6);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  color: var(--accent-green);
  font-size: var(--font-size-small);
  text-align: left;
  transition: all var(--transition-speed) ease;
  text-decoration: none;
  max-width: 100%;
  word-break: break-word;
}

.contact-link:hover {
  background: rgba(107, 142, 35, 0.2);
  border-color: var(--accent-green);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(107, 142, 35, 0.3);
}

.contact-icon {
  font-size: 1.2em;
  line-height: 1;
  flex-shrink: 0;
  display: inline-block;
}

@media (max-width: 768px) {
  .parceiro-card {
    padding: var(--spacing-lg) var(--spacing-md);
  }

  .contact-link {
    font-size: var(--font-size-label);
    padding: var(--spacing-xs) var(--spacing-sm);
  }

  .contact-icon {
    font-size: 1.1em;
  }
}

/* ===============================================
   CTA SECTION
   =============================================== */

.cta {
  padding: var(--spacing-2xl) var(--spacing-sm);
  text-align: center;
}

.cta-description {
  font-size: var(--font-size-body);
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto var(--spacing-lg);
  line-height: 1.8;
}

.cta-buttons {
  margin-bottom: var(--spacing-lg);
}

.qr-code-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
}

.qr-label {
  font-size: var(--font-size-small);
  color: var(--text-secondary);
}

#qr-code {
  border-radius: var(--border-radius-sm);
  background: white;
  padding: var(--spacing-sm);
}

/* ===============================================
   FOOTER
   =============================================== */

.footer {
  background: var(--surface-dark);
  padding: var(--spacing-xl) var(--spacing-sm) var(--spacing-md);
  border-top: 1px solid var(--border-color);
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

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

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

@media (min-width: 768px) {
  .footer-section {
    text-align: left;
  }
}

.footer-title {
  font-size: var(--font-size-body);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--secondary-earth);
}

.footer-text {
  font-size: var(--font-size-small);
  color: var(--text-secondary);
  line-height: 1.7;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

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

.footer-links a:hover {
  color: var(--accent-green);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-color);
}

.copyright,
.version {
  font-size: var(--font-size-label);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
}

/* ===============================================
   LIGHTBOX MODAL
   =============================================== */

.lightbox {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(26, 21, 18, 0.95);
  backdrop-filter: blur(10px);
  z-index: 9999;
  justify-content: center;
  align-items: center;
}

.lightbox.active {
  display: flex;
}

.lightbox-image {
  max-width: 90%;
  max-height: 90vh;
  object-fit: contain;
  border-radius: var(--border-radius);
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
  position: absolute;
  color: var(--text-primary);
  font-size: 40px;
  background: rgba(139, 111, 71, 0.8);
  border: none;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  z-index: 10000;
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
  background: var(--accent-green);
  transform: scale(1.1);
}

.lightbox-close {
  top: 20px;
  right: 20px;
}

.lightbox-prev {
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
}

.lightbox-prev:hover {
  transform: translateY(-50%) scale(1.1);
}

.lightbox-next {
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
}

.lightbox-next:hover {
  transform: translateY(-50%) scale(1.1);
}

/* Mobile lightbox adjustments */
@media (max-width: 768px) {
  .lightbox-close,
  .lightbox-prev,
  .lightbox-next {
    width: 50px;
    height: 50px;
    font-size: 30px;
  }

  .lightbox-close {
    top: 10px;
    right: 10px;
  }

  .lightbox-prev {
    left: 10px;
  }

  .lightbox-next {
    right: 10px;
  }
}

/* ===============================================
   ACCESSIBILITY
   =============================================== */

/* Focus states */
a:focus,
button:focus {
  outline: 2px solid var(--accent-green);
  outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}

/* High contrast mode */
@media (prefers-contrast: high) {
  .card {
    border-width: 3px;
  }

  .btn-primary {
    border-width: 4px;
  }
}

/* ===============================================
   LOADING STATES
   =============================================== */

.loading {
  opacity: 0.5;
  pointer-events: none;
}

/* Prevent layout shift */
img[width][height] {
  height: auto;
}