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

:root {
  --olive: #4A7C59;
  --olive-hover: #3e6b4c;
  --olive-dark: #2D5A3F;
  --olive-light: #eef4f0;
  --text: #1d1d1f;
  --text-secondary: #6e6e73;
  --bg: #ffffff;
  --bg-alt: #f5f5f7;
  --border: #e2e2e5;
  --radius: 10px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 64px;
}

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.5;
  overflow-x: hidden;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}


/* ─── Nav ─── */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  transition: background 0.3s;
}

.nav-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
  font-size: 16px;
  letter-spacing: -0.01em;
}

.nav-logo-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-cta {
  display: inline-flex;
  padding: 7px 18px;
  background: var(--olive);
  color: #fff;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.2s;
  letter-spacing: -0.005em;
}

.nav-cta:hover {
  background: var(--olive-hover);
}


/* ─── Language Selector ─── */

.lang-select {
  position: relative;
}

.lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 5px 10px;
  font-size: 13px;
  font-family: var(--font);
  color: var(--text-secondary);
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
}

.lang-btn:hover {
  border-color: var(--olive);
  color: var(--text);
}

.lang-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 4px;
  display: none;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08), 0 2px 8px rgba(0, 0, 0, 0.04);
  min-width: 150px;
  z-index: 200;
  max-height: 360px;
  overflow-y: auto;
}

.lang-dropdown.open {
  display: block;
}

.lang-dropdown button {
  display: block;
  width: 100%;
  text-align: left;
  padding: 8px 12px;
  border: none;
  background: none;
  font-family: var(--font);
  font-size: 14px;
  color: var(--text);
  cursor: pointer;
  border-radius: 6px;
  transition: background 0.15s;
}

.lang-dropdown button:hover {
  background: var(--bg-alt);
}

.lang-dropdown button.active {
  color: var(--olive);
  font-weight: 500;
}


/* ─── Hero ─── */

.hero {
  padding: 140px 0 0;
  text-align: center;
}

.hero h1 {
  font-size: clamp(34px, 5.2vw, 56px);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.08;
  max-width: 680px;
  margin: 0 auto 20px;
  color: var(--text);
}

.hero-sub {
  font-size: clamp(16px, 1.8vw, 19px);
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto 36px;
  line-height: 1.65;
  letter-spacing: -0.005em;
}

.hero-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.hero-cta-btn {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  padding: 14px 44px;
  background: var(--olive);
  color: #fff;
  border-radius: 12px;
  text-decoration: none;
  transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 2px 8px rgba(74, 124, 89, 0.2);
}

.hero-cta-btn:hover {
  background: var(--olive-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(74, 124, 89, 0.25);
}

.hero-cta-main {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.hero-cta-sub {
  font-size: 12px;
  opacity: 0.75;
  margin-top: 3px;
  font-weight: 400;
}

.hero-also {
  font-size: 13px;
  color: var(--text-secondary);
}

.hero-also a {
  color: var(--olive);
  text-decoration: none;
}

.hero-also a:hover {
  text-decoration: underline;
}


/* ─── App Window (screenshot frame) ─── */

.hero-screenshot {
  margin-top: 56px;
  padding-bottom: 100px;
}

.app-window {
  border-radius: 12px;
  overflow: hidden;
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.08),
    0 20px 60px -12px rgba(0, 0, 0, 0.18),
    0 40px 90px -20px rgba(0, 0, 0, 0.08);
  max-width: 920px;
  margin: 0 auto;
}

.app-window-header {
  background: linear-gradient(180deg, #e8e8e8 0%, #d8d8d8 100%);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  position: relative;
}

.window-dots {
  display: flex;
  gap: 8px;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot-close { background: #ff5f57; }
.dot-minimize { background: #febc2e; }
.dot-maximize { background: #28c840; }

.window-title {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  font-size: 13px;
  font-weight: 500;
  color: #4a4a4a;
}

.app-window-body {
  background: #f3f4f6;
  position: relative;
}

.screenshot-img {
  width: 100%;
  display: block;
  border-radius: 12px;
}

.screenshot-img:not(.loaded) {
  display: none;
}

.screenshot-img.loaded ~ .app-mockup {
  display: none;
}


/* ─── CSS App Mockup ─── */

.app-mockup {
  font-size: 12px;
}

.mockup-toolbar {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  background: #fff;
  border-bottom: 1px solid #e5e7eb;
}

.mockup-tool-group {
  display: flex;
  gap: 2px;
}

.mockup-tool {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 4px;
  cursor: default;
}

.mockup-tool svg {
  width: 14px;
  height: 14px;
}

.mockup-tool.active {
  background: var(--olive-light);
}

.mockup-divider {
  width: 1px;
  height: 20px;
  background: #e5e7eb;
  margin: 0 6px;
}

.mockup-spacer {
  flex: 1;
}

.mockup-export {
  padding: 4px 14px;
  background: #2563eb;
  color: #fff;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 500;
}

.mockup-body {
  display: flex;
  height: 380px;
}

.mockup-sidebar {
  width: 80px;
  background: #f9fafb;
  border-right: 1px solid #e5e7eb;
  padding: 10px 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mockup-thumb {
  background: #fff;
  border: 1px solid #e2e2e5;
  border-radius: 3px;
  padding: 8px 6px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  aspect-ratio: 3/4;
}

.mockup-thumb.active {
  border-color: var(--olive);
  box-shadow: 0 0 0 1px var(--olive);
}

.mockup-thumb-line {
  height: 2px;
  background: #d1d5db;
  border-radius: 1px;
}

.mockup-canvas {
  flex: 1;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 24px;
  overflow: hidden;
}

.mockup-page {
  background: #fff;
  width: 320px;
  padding: 28px 24px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  border-radius: 2px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mockup-page-line {
  height: 6px;
  background: #e5e7eb;
  border-radius: 3px;
}

.mockup-page-line.highlight {
  background: rgba(255, 235, 59, 0.5);
  position: relative;
}

.mockup-page-gap {
  height: 8px;
}

.mockup-image-block {
  width: 55%;
  margin: 4px 0;
  border-radius: 3px;
  overflow: hidden;
  border: 1px dashed var(--olive);
  padding: 2px;
}

.mockup-image-block svg {
  width: 100%;
  height: auto;
  display: block;
}

.mockup-signature {
  width: 50%;
  margin-left: auto;
  margin-top: 4px;
  opacity: 0.7;
}

.mockup-signature svg {
  width: 100%;
  height: auto;
}

.mockup-statusbar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background: #f9fafb;
  border-top: 1px solid #e5e7eb;
  font-size: 10px;
  color: #9ca3af;
}

.mockup-status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #34d399;
}

.mockup-status-spacer {
  flex: 1;
}


/* ─── Features ─── */

.features {
  padding: 100px 0;
  background: var(--bg-alt);
}

.features h2 {
  font-size: clamp(26px, 3.5vw, 38px);
  font-weight: 700;
  letter-spacing: -0.03em;
  text-align: center;
  margin-bottom: 72px;
  line-height: 1.15;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 56px 72px;
}

.feature {
  padding-top: 24px;
  border-top: 2px solid var(--border);
}

.feature-number {
  font-size: 13px;
  font-weight: 600;
  color: var(--olive);
  letter-spacing: 0.04em;
  margin-bottom: 14px;
  font-variant-numeric: tabular-nums;
}

.feature h3 {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin-bottom: 8px;
  line-height: 1.3;
}

.feature p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.65;
}


/* ─── Download ─── */

.download {
  padding: 100px 0 120px;
  text-align: center;
}

.download h2 {
  font-size: clamp(26px, 3.5vw, 38px);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 10px;
  line-height: 1.15;
}

.download-sub {
  color: var(--text-secondary);
  font-size: 17px;
  margin-bottom: 40px;
  letter-spacing: -0.005em;
}

.download-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.dl-btn {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 16px 28px;
  border-radius: 12px;
  text-decoration: none;
  transition: all 0.2s;
  min-width: 220px;
  text-align: left;
}

.dl-btn-primary {
  background: var(--olive);
  color: #fff;
  box-shadow: 0 2px 8px rgba(74, 124, 89, 0.2);
}

.dl-btn-primary:hover {
  background: var(--olive-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(74, 124, 89, 0.25);
}

.dl-btn-secondary {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
}

.dl-btn-secondary:hover {
  border-color: var(--olive);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.dl-btn-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.dl-btn-secondary .dl-btn-icon {
  opacity: 0.65;
}

.dl-btn-text {
  display: flex;
  flex-direction: column;
}

.dl-btn-label {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.dl-btn-meta {
  font-size: 12px;
  opacity: 0.65;
  margin-top: 2px;
  font-weight: 400;
}

.download-mobile {
  display: none;
  margin-top: 24px;
  font-size: 14px;
  color: var(--text-secondary);
}


/* ─── Footer ─── */

.footer {
  padding: 28px 0;
  border-top: 1px solid rgba(0, 0, 0, 0.06);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-secondary);
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}

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


/* ─── Animations ─── */

.animate-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

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


/* ─── Responsive ─── */

@media (max-width: 768px) {
  .hero {
    padding: 110px 0 0;
  }

  .hero-screenshot {
    margin-top: 40px;
    padding-bottom: 64px;
  }

  .mockup-body {
    height: 240px;
  }

  .mockup-sidebar {
    width: 56px;
    padding: 6px 4px;
    gap: 6px;
  }

  .mockup-page {
    width: 240px;
    padding: 16px 14px;
    gap: 5px;
  }

  .mockup-page-line {
    height: 4px;
  }

  .features {
    padding: 72px 0;
  }

  .features h2 {
    margin-bottom: 48px;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .download {
    padding: 72px 0 80px;
  }

  .download-buttons {
    flex-direction: column;
    align-items: center;
  }

  .dl-btn {
    width: 100%;
    max-width: 320px;
    justify-content: center;
  }

  .footer-inner {
    flex-direction: column;
    gap: 8px;
  }

  .nav-cta {
    display: none;
  }
}

@media (max-width: 480px) {
  .mockup-sidebar {
    display: none;
  }

  .mockup-body {
    height: 200px;
  }

  .mockup-page {
    width: 100%;
  }

  .hero-cta-btn {
    padding: 14px 32px;
  }
}

/* ─── Mobile detection ─── */

@media (hover: none) and (pointer: coarse) {
  .download-buttons {
    display: none;
  }

  .download-mobile {
    display: block;
  }
}

/* ─── Print ─── */

@media print {
  .nav,
  .hero-actions,
  .download {
    display: none;
  }
}