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

:root {
  --forest:   #1B4332;
  --grove:    #2D6A4F;
  --leaf:     #52B788;
  --meadow:   #D8F3DC;
  --mist:     #F2FAF5;
  --ink:      #1A2B1C;
  --charcoal: #374737;
  --slate:    #5A6E5B;
  --border:   #B7DFC3;
  --white:    #FFFFFF;
  --shadow-sm: 0 2px 8px rgba(0,0,0,.08);
  --shadow-md: 0 8px 32px rgba(0,0,0,.13);
  --shadow-lg: 0 20px 60px rgba(0,0,0,.18);
  --radius:   12px;
  --font-display: 'Lora', Georgia, serif;
  --font-body:    'Inter', system-ui, -apple-system, sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  color: var(--charcoal);
  background: var(--white);
}

img { display: block; max-width: 100%; }
a   { color: var(--grove); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 {
  font-family: var(--font-display);
  color: var(--ink);
  line-height: 1.2;
}

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ── Buttons ─────────────────────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 13px 28px;
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition: background .18s, color .18s, border-color .18s, box-shadow .18s;
  white-space: nowrap;
}

.btn-primary {
  background: var(--forest);
  color: var(--white);
  border: 2px solid var(--forest);
}
.btn-primary:hover {
  background: var(--grove);
  border-color: var(--grove);
  text-decoration: none;
  box-shadow: var(--shadow-sm);
}

.btn-secondary {
  background: transparent;
  color: var(--forest);
  border: 2px solid var(--forest);
}
.btn-secondary:hover {
  background: var(--meadow);
  text-decoration: none;
}

.btn-lg { padding: 16px 36px; font-size: 17px; }

/* ── Navigation ──────────────────────────────────────────────────── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--forest);
  box-shadow: 0 1px 4px rgba(0,0,0,.25);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 40px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--white);
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
}
.nav-brand:hover { text-decoration: none; color: var(--meadow); }
.nav-brand img { width: 30px; height: 30px; border-radius: 6px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}
.nav-links a {
  color: rgba(255,255,255,.85);
  font-size: 15px;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 6px;
  transition: background .15s, color .15s;
}
.nav-links a:hover { background: rgba(255,255,255,.12); color: var(--white); text-decoration: none; }
.nav-links a.active { color: var(--white); background: rgba(255,255,255,.15); }
.nav-links .nav-download { background: var(--leaf); color: var(--ink); font-weight: 600; }
.nav-links .nav-download:hover { background: #74d4a1; color: var(--ink); }

/* ── Hero ────────────────────────────────────────────────────────── */
.hero {
  background: linear-gradient(160deg, var(--forest) 0%, var(--grove) 100%);
  overflow: hidden;
}

.hero-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 420px;
  max-width: 1400px;
  margin: 0 auto;
}

.hero-left {
  padding: 52px 56px 52px 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  color: var(--white);
}

.hero-right {
  position: relative;
  overflow: hidden;
}

.hero-bird {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 25%;
  display: block;
}

.hero-photo-credit {
  position: absolute;
  bottom: 10px;
  right: 14px;
  font-size: 11px;
  color: rgba(255,255,255,.65);
  font-style: italic;
  text-shadow: 0 1px 3px rgba(0,0,0,.5);
}

.hero-icon {
  width: 84px;
  height: 84px;
  border-radius: 20px;
  margin-bottom: 28px;
  box-shadow: 0 8px 24px rgba(0,0,0,.3);
}

.hero h1 {
  font-size: clamp(2rem, 3.5vw, 3rem);
  color: var(--white);
  margin-bottom: 20px;
}

.hero-tagline {
  font-size: 1.1rem;
  color: rgba(255,255,255,.85);
  margin-bottom: 36px;
  max-width: 480px;
}

.hero-buttons {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-buttons .btn-primary {
  background: var(--leaf);
  border-color: var(--leaf);
  color: var(--ink);
}
.hero-buttons .btn-primary:hover { background: #74d4a1; border-color: #74d4a1; }
.hero-buttons .btn-secondary {
  border-color: rgba(255,255,255,.6);
  color: var(--white);
}
.hero-buttons .btn-secondary:hover { background: rgba(255,255,255,.12); border-color: var(--white); }

/* ── Audience cards ──────────────────────────────────────────────── */
.audiences {
  padding: 80px 0 60px;
  background: var(--mist);
}

.audiences h2 {
  text-align: center;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 48px;
}

.audience-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.audience-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow-sm);
}

.audience-card .card-icon {
  font-size: 2.2rem;
  margin-bottom: 16px;
}

.audience-card h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
  color: var(--forest);
}

.audience-card p {
  color: var(--slate);
  font-size: 0.97rem;
  line-height: 1.7;
}

/* ── Feature sections ────────────────────────────────────────────── */
.feature {
  padding: 64px 0;
}

.feature:nth-child(even) { background: var(--mist); }

.feature-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 64px;
}

.feature-inner.flip { direction: rtl; }
.feature-inner.flip > * { direction: ltr; }

.feature-text h2 {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  margin-bottom: 16px;
}

.feature-text p {
  color: var(--slate);
  margin-bottom: 20px;
  font-size: 1rem;
}

.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 0;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--charcoal);
}

.feature-list li::before {
  content: "✓";
  color: var(--leaf);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

.feature-screenshot {
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.feature-screenshot img {
  width: 100%;
  display: block;
}

/* ── Stats strip ─────────────────────────────────────────────────── */
.stats-strip {
  background: var(--forest);
  padding: 48px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-item strong {
  display: block;
  font-size: 2rem;
  font-family: var(--font-display);
  color: var(--leaf);
  margin-bottom: 4px;
}

.stat-item span {
  font-size: 0.9rem;
  color: rgba(255,255,255,.75);
}

/* ── CTA banner ──────────────────────────────────────────────────── */
.cta-banner {
  background: var(--meadow);
  padding: 80px 0;
  text-align: center;
  border-top: 1px solid var(--border);
}

.cta-banner h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 12px;
}

.cta-banner p {
  color: var(--slate);
  margin-bottom: 32px;
  font-size: 1.05rem;
}
.cta-banner p a { text-decoration: underline; }

.cta-banner .btn-group {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Footer ──────────────────────────────────────────────────────── */
footer {
  background: var(--ink);
  color: rgba(255,255,255,.65);
  padding: 40px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

footer a { color: rgba(255,255,255,.75); }
footer a:hover { color: var(--white); }

.footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
  flex-wrap: wrap;
}

.footer-links li a { font-size: 14px; }

footer p { font-size: 13px; }

/* ── Download page ───────────────────────────────────────────────── */
.download-hero {
  background: linear-gradient(160deg, var(--forest) 0%, var(--grove) 100%);
  padding: 72px 0;
  text-align: center;
  color: var(--white);
}

.download-hero h1 {
  color: var(--white);
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 12px;
}

.download-hero p {
  color: rgba(255,255,255,.8);
  font-size: 1.1rem;
  margin-bottom: 36px;
}

.version-badge {
  display: inline-block;
  background: rgba(255,255,255,.15);
  color: var(--white);
  font-size: 14px;
  font-weight: 500;
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 28px;
}

/* Platform tabs */
.platforms {
  padding: 72px 0;
}

.platform-tabs {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--border);
  margin-bottom: 56px;
}

.tab-btn {
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  padding: 14px 28px;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  color: var(--slate);
  cursor: pointer;
  transition: color .15s, border-color .15s;
  display: flex;
  align-items: center;
  gap: 8px;
}

.tab-btn:hover { color: var(--forest); }
.tab-btn.active { color: var(--forest); border-bottom-color: var(--forest); }

.tab-icon { font-size: 1.2em; }
.tab-icon img { height: 20px; width: auto; vertical-align: middle; }

.platform-panel { display: none; }
.platform-panel.active { display: block; }

/* Platform content */
.platform-intro {
  display: flex;
  align-items: flex-start;
  gap: 40px;
  margin-bottom: 56px;
  padding: 36px;
  background: var(--mist);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.platform-cta { flex-shrink: 0; }
.platform-cta .btn { margin-bottom: 12px; display: block; text-align: center; }
.platform-cta .release-note { font-size: 12px; color: var(--slate); text-align: center; }

.platform-intro-text h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
}

.platform-intro-text p { color: var(--slate); font-size: 0.95rem; }

/* Step-by-step */
.steps-heading {
  font-size: 1.3rem;
  margin-bottom: 28px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.steps { display: flex; flex-direction: column; gap: 28px; }

.step {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 20px;
  align-items: flex-start;
}

.step-number {
  width: 44px;
  height: 44px;
  background: var(--forest);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}

.step-content h4 {
  font-size: 1.05rem;
  margin-bottom: 6px;
  color: var(--ink);
}

.step-content p, .step-content li {
  font-size: 0.95rem;
  color: var(--slate);
  line-height: 1.65;
}

.step-content ul { padding-left: 20px; margin-top: 6px; }
.step-content ul li { margin-bottom: 4px; }

code, .step-content code {
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 0.88em;
  background: var(--meadow);
  color: var(--forest);
  padding: 2px 6px;
  border-radius: 4px;
}

.code-block {
  background: var(--ink);
  color: #a8d8b9;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 0.9rem;
  padding: 18px 22px;
  border-radius: 8px;
  margin-top: 10px;
  overflow-x: auto;
  white-space: pre;
}

.callout {
  background: #fff8e1;
  border-left: 4px solid #f6c90e;
  padding: 14px 18px;
  border-radius: 0 8px 8px 0;
  font-size: 0.93rem;
  color: #5a4f00;
  margin-top: 12px;
}

.callout strong { color: #3d3500; }

/* Requirements table */
.req-section {
  margin-top: 64px;
  padding-top: 48px;
  border-top: 1px solid var(--border);
}

.req-section h3 { font-size: 1.3rem; margin-bottom: 20px; }

.req-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}

.req-item {
  background: var(--mist);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 18px;
  font-size: 0.9rem;
}

.req-item strong { display: block; color: var(--ink); margin-bottom: 2px; }
.req-item span { color: var(--slate); font-size: 0.85rem; }

/* ── Responsive ──────────────────────────────────────────────────── */
@media (max-width: 860px) {
  .audience-grid { grid-template-columns: 1fr; }

  .hero-split { grid-template-columns: 1fr; min-height: auto; }
  .hero-right { height: 300px; order: -1; }
  .hero-left { padding: 52px 32px 56px; }

  .feature-inner {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .feature-inner.flip { direction: ltr; }
  .feature-screenshot { order: -1; }

  .stats-grid { grid-template-columns: 1fr 1fr; }

  .platform-intro { flex-direction: column; }
  .platform-cta .btn { width: 100%; }

  .step { grid-template-columns: 36px 1fr; gap: 14px; }
  .step-number { width: 36px; height: 36px; font-size: 1rem; }
}

@media (max-width: 600px) {
  .container { padding: 0 20px; }
  .nav-inner { height: 54px; }
  .hero-right { height: 220px; }
  .hero-left { padding: 40px 20px 48px; }
  .hero-icon { width: 66px; height: 66px; border-radius: 16px; }
  .feature { padding: 64px 0; }
  .stats-grid { grid-template-columns: 1fr; }
  .platform-tabs { overflow-x: auto; }
  .tab-btn { padding: 12px 18px; font-size: 14px; }
  .footer-inner { flex-direction: column; gap: 16px; }
}