/* ===== CSS Variables ===== */
:root {
  --color-primary: #2e7d32;
  --color-primary-dark: #1b5e20;
  --color-primary-light: #4caf50;
  --color-accent: #66bb6a;
  --color-bg: #f8faf8;
  --color-bg-alt: #ffffff;
  --color-text: #263238;
  --color-text-light: #546e7a;
  --color-text-muted: #78909c;
  --color-border: #e0e0e0;
  --color-card-bg: #ffffff;
  --color-hero-gradient-start: #1b5e20;
  --color-hero-gradient-end: #2e7d32;
  --color-pro-badge: #ff9800;
  --color-free-badge: #4caf50;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --max-width: 1200px;
  --font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

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

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

body {
  font-family: var(--font-family);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s;
}

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

/* ===== Navigation ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  padding: 0 1.5rem;
}

.navbar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.8rem;
  color: var(--color-primary-dark);
  line-height: 1.2;
}

.navbar-brand img {
  height: 40px;
  width: auto;
  flex-shrink: 0;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}

.navbar-nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-light);
  transition: color 0.2s;
}

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

/* Language Switcher */
.lang-switcher {
  position: relative;
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg-alt);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.lang-btn:hover,
.lang-btn:focus {
  border-color: var(--color-primary-light);
  box-shadow: 0 0 0 2px rgba(76,175,80,0.15);
  outline: none;
}

.lang-btn svg {
  width: 16px;
  height: 16px;
  transition: transform 0.2s;
}

.lang-switcher.open .lang-btn svg {
  transform: rotate(180deg);
}

.lang-dropdown {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  min-width: 160px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 0.2s, transform 0.2s, visibility 0.2s;
  list-style: none;
  overflow: hidden;
}

.lang-switcher.open .lang-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-dropdown li a {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  font-size: 0.85rem;
  color: var(--color-text);
  transition: background 0.15s;
}

.lang-dropdown li a:hover,
.lang-dropdown li a.active {
  background: rgba(76,175,80,0.08);
  color: var(--color-primary);
}

.lang-dropdown li a.active {
  font-weight: 600;
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  margin: 5px 0;
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .navbar-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-bg-alt);
    flex-direction: column;
    padding: 1rem 1.5rem;
    gap: 0;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.3s, opacity 0.3s, visibility 0.3s;
  }

  .navbar-nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .navbar-nav li {
    width: 100%;
  }

  .navbar-nav a {
    display: block;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 1rem;
  }

  .navbar-nav li:last-child a {
    border-bottom: none;
  }

  .lang-switcher {
    width: 100%;
    margin-top: 0.5rem;
  }

  .lang-btn {
    width: 100%;
    justify-content: center;
  }

  .lang-dropdown {
    position: static;
    box-shadow: none;
    border: 1px solid var(--color-border);
    margin-top: 0.5rem;
    transform: none;
  }

  .lang-switcher.open .lang-dropdown {
    transform: none;
  }
}

/* ===== Hero Section ===== */
.hero {
  background: linear-gradient(135deg, var(--color-hero-gradient-start), var(--color-hero-gradient-end));
  color: #fff;
  padding: 5rem 1.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, transparent 70%);
  animation: heroGlow 15s linear infinite;
}

@keyframes heroGlow {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.hero-image {
  flex-shrink: 0;
}

.hero-image img {
  width: 390px;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
}

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

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.hero p {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  opacity: 0.9;
  margin-bottom: 2rem;
  max-width: 600px;
}

@media (max-width: 768px) {
  .hero-content {
    flex-direction: column;
    text-align: center;
  }
  .hero-text {
    text-align: center;
  }
  .hero-image img {
    width: 300px;
  }
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: #fff;
  color: var(--color-primary-dark);
  font-size: 1.1rem;
  font-weight: 700;
  padding: 0.9rem 2rem;
  border-radius: 50px;
  box-shadow: var(--shadow-md);
  transition: transform 0.2s, box-shadow 0.2s;
}

.hero-cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: var(--color-primary-dark);
}

.hero-cta-pro {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  color: #fff;
  font-size: 1.1rem;
  font-weight: 700;
  padding: 0.9rem 2rem;
  border-radius: 50px;
  border: 2px solid rgba(255,255,255,0.8);
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}

.hero-cta-pro:hover {
  transform: translateY(-2px);
  background: rgba(255,255,255,0.15);
  box-shadow: var(--shadow-lg);
  color: #fff;
}

.hero-cta-pro svg {
  width: 20px;
  height: 20px;
}

.hero-cta svg {
  width: 20px;
  height: 20px;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

/* ===== Video Tutorial Banner ===== */
.video-tutorial {
  background: var(--color-bg-alt);
  border-bottom: 1px solid rgba(0,0,0,0.06);
  padding: 1rem 1.5rem;
  text-align: center;
}

.video-tutorial a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-primary-dark);
  font-weight: 600;
  font-size: 1.05rem;
  transition: color 0.2s;
}

.video-tutorial a:hover {
  color: var(--color-primary-light);
}

.video-tutorial svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
}

/* ===== Section Base ===== */
.section {
  padding: 4rem 1.5rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

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

.section-title {
  text-align: center;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.section-subtitle {
  text-align: center;
  font-size: 1rem;
  color: var(--color-text-muted);
  margin-bottom: 3rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== Version Cards (FREE / PRO) ===== */
.version-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.version-card {
  background: var(--color-card-bg);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  border: 2px solid transparent;
  transition: transform 0.2s, box-shadow 0.2s;
  position: relative;
  overflow: hidden;
}

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

.version-card.pro {
  border-color: var(--color-pro-badge);
}

.version-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 1rem;
}

.version-badge.free {
  background: rgba(76,175,80,0.1);
  color: var(--color-free-badge);
}

.version-badge.pro {
  background: rgba(255,152,0,0.1);
  color: var(--color-pro-badge);
}

.version-card h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.version-card p {
  color: var(--color-text-light);
  font-size: 0.95rem;
  line-height: 1.7;
}

.version-card ul {
  list-style: none;
  margin-top: 1.25rem;
}

.version-card ul li {
  padding: 0.4rem 0;
  padding-left: 1.5rem;
  position: relative;
  color: var(--color-text-light);
  font-size: 0.95rem;
}

.version-card ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.7rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
}

.version-card.pro ul li::before {
  background: var(--color-pro-badge);
}

/* ===== Comparison Table ===== */
.comparison-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-card-bg);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  min-width: 500px;
}

.comparison-table thead {
  background: var(--color-primary);
  color: #fff;
}

.comparison-table th {
  padding: 1rem 1.5rem;
  text-align: left;
  font-weight: 600;
  font-size: 0.95rem;
}

.comparison-table td {
  padding: 0.85rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.comparison-table tbody tr:last-child td {
  border-bottom: none;
}

.comparison-table tbody tr:hover {
  background: rgba(76,175,80,0.03);
}

.check {
  color: var(--color-primary);
  font-weight: 700;
  font-size: 1.1rem;
}

.cross {
  color: #ccc;
  font-size: 1.1rem;
}

/* ===== Features ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  background: var(--color-card-bg);
  padding: 1.75rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: rgba(76,175,80,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  font-size: 1.4rem;
}

.feature-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ===== Screenshots Gallery ===== */
.screenshots-section {
  padding: 4rem 1.5rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.screenshot-group {
  margin-bottom: 3rem;
}

.screenshot-group:last-child {
  margin-bottom: 0;
}

.screenshot-group-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.screenshot-group-title .badge {
  font-size: 0.7rem;
  padding: 0.2rem 0.6rem;
  border-radius: 50px;
  font-weight: 700;
  text-transform: uppercase;
}

.badge-free {
  background: rgba(76,175,80,0.1);
  color: var(--color-free-badge);
}

.badge-pro {
  background: rgba(255,152,0,0.1);
  color: var(--color-pro-badge);
}

.screenshot-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.screenshot-item {
  cursor: pointer;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s, box-shadow 0.2s;
  aspect-ratio: 6 / 13;
  background: #f0f0f0;
}

.screenshot-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.screenshot-item img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
}

@media (max-width: 640px) {
  .screenshot-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
  }
}

/* ===== Lightbox ===== */
.lightbox {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.9);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
}

.lightbox.active {
  opacity: 1;
  visibility: visible;
}

.lightbox-content {
  max-width: 90vw;
  max-height: 90vh;
  position: relative;
}

.lightbox-content img {
  max-width: 100%;
  max-height: 90vh;
  object-fit: contain;
  border-radius: var(--radius-sm);
}

.lightbox-close {
  position: absolute;
  top: -40px;
  right: 0;
  background: none;
  border: none;
  color: #fff;
  font-size: 2rem;
  cursor: pointer;
  padding: 0.5rem;
  line-height: 1;
  transition: opacity 0.2s;
}

.lightbox-close:hover {
  opacity: 0.7;
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.15);
  border: none;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
  padding: 1rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: background 0.2s;
}

.lightbox-nav:hover {
  background: rgba(255,255,255,0.25);
}

.lightbox-prev {
  left: -60px;
}

.lightbox-next {
  right: -60px;
}

@media (max-width: 768px) {
  .lightbox-prev {
    left: 10px;
  }
  .lightbox-next {
    right: 10px;
  }
}

/* ===== CTA Section ===== */
.cta-section {
  background: linear-gradient(135deg, var(--color-hero-gradient-start), var(--color-hero-gradient-end));
  color: #fff;
  padding: 4rem 1.5rem;
  text-align: center;
}

.cta-section h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  margin-bottom: 1rem;
}

.cta-section p {
  font-size: 1.05rem;
  opacity: 0.9;
  margin-bottom: 2rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: #fff;
  color: var(--color-primary-dark);
  font-size: 1.1rem;
  font-weight: 700;
  padding: 0.9rem 2rem;
  border-radius: 50px;
  box-shadow: var(--shadow-md);
  transition: transform 0.2s, box-shadow 0.2s;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: var(--color-primary-dark);
}

.cta-button-pro {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  color: #fff;
  font-size: 1.1rem;
  font-weight: 700;
  padding: 0.9rem 2rem;
  border-radius: 50px;
  border: 2px solid rgba(255,255,255,0.8);
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}

.cta-button-pro:hover {
  transform: translateY(-2px);
  background: rgba(255,255,255,0.15);
  box-shadow: var(--shadow-lg);
  color: #fff;
}

.cta-button-pro svg {
  width: 20px;
  height: 20px;
}

.cta-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

.cta-button svg {
  width: 20px;
  height: 20px;
}

/* ===== Footer ===== */
.footer {
  background: #1a1a1a;
  color: rgba(255,255,255,0.7);
  padding: 3rem 1.5rem;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 2rem;
}

.footer-brand {
  max-width: 300px;
}

.footer-brand h3 {
  color: #fff;
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.footer-brand p {
  font-size: 0.85rem;
  line-height: 1.6;
}

.footer-links h4 {
  color: #fff;
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

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

.footer-links ul li {
  margin-bottom: 0.4rem;
}

.footer-links ul li a {
  color: rgba(255,255,255,0.6);
  font-size: 0.85rem;
  transition: color 0.2s;
}

.footer-links ul li a:hover {
  color: #fff;
}

.footer-bottom {
  max-width: var(--max-width);
  margin: 2rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center;
  font-size: 0.8rem;
}

@media (max-width: 640px) {
  .footer-inner {
    flex-direction: column;
    text-align: center;
  }

  .footer-brand {
    max-width: 100%;
  }
}

/* ===== Privacy Policy Page ===== */
.privacy-page {
  max-width: 800px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

.privacy-page h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--color-primary-dark);
}

.privacy-page .last-updated {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

.privacy-page h2 {
  font-size: 1.3rem;
  font-weight: 600;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  color: var(--color-text);
}

.privacy-page p,
.privacy-page ul {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 1rem;
}

.privacy-page ul {
  padding-left: 1.5rem;
}

.privacy-page ul li {
  margin-bottom: 0.3rem;
}

.privacy-page a {
  color: var(--color-primary);
}

/* ===== Animations ===== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Utility ===== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border-width: 0;
}

/* ===== Print ===== */
@media print {
  .navbar, .lightbox, .cta-section, .lang-switcher, .nav-toggle {
    display: none !important;
  }

  .hero {
    background: #fff !important;
    color: #000 !important;
    padding: 1rem 0;
  }

  body {
    background: #fff;
  }
}