/* ── GOOGLE FONTS ─────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;1,9..40,300&display=swap');

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

/* ── TOKENS ───────────────────────────────────────────────── */
:root {
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
  --bg:          #0a0a0f;
  --bg2:         #111118;
  --bg3:         #18181f;
  --surface:     #1e1e28;
  --border:      rgba(255,255,255,0.08);
  --text:        #f0f0f8;
  --text-muted:  #8888aa;
  --text-dim:    #555570;
  --accent:      #7c6ff7;
  --accent2:     #b8a9ff;
  --accent-glow: rgba(124,111,247,0.25);
  --logo-stroke: #ffffff;
  --card-bg:     rgba(255,255,255,0.03);
  --card-border: rgba(255,255,255,0.07);
  --nav-bg:      rgba(10,10,15,0.85);
}

[data-theme="light"] {
  --bg:          #f4f4f8;
  --bg2:         #ebebf2;
  --bg3:         #e2e2ec;
  --surface:     #ffffff;
  --border:      rgba(0,0,0,0.08);
  --text:        #0f0f1a;
  --text-muted:  #5a5a7a;
  --text-dim:    #aaaacc;
  --accent:      #5b4fe8;
  --accent2:     #7c6ff7;
  --accent-glow: rgba(91,79,232,0.15);
  --logo-stroke: #0f0f1a;
  --card-bg:     rgba(255,255,255,0.8);
  --card-border: rgba(0,0,0,0.07);
  --nav-bg:      rgba(244,244,248,0.85);
}

/* ── BASE ─────────────────────────────────────────────────── */
html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: 'DM Sans', 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── VIEW TRANSITIONS ─────────────────────────────────────── */
::view-transition-old(root) { animation: none; }
::view-transition-new(root) { animation: none; }

/* ── NAV ──────────────────────────────────────────────────── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 clamp(1.5rem, 5vw, 4rem);
  height: 64px;
  background: var(--nav-bg);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s, border-color 0.3s;
}

.nav-logo {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none;
}
.nav-logo svg { width: 28px; height: auto; }
.nav-logo svg .logo-path { stroke: var(--logo-stroke); transition: stroke 0.3s; }

.nav-logo-text {
  font-family: 'Syne', 'Arial Black', Arial, sans-serif;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
  letter-spacing: -0.02em;
  transition: color 0.3s;
}

.nav-right { display: flex; align-items: center; gap: 1.5rem; }

.nav-link {
  font-size: 0.875rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
  font-weight: 500;
}
.nav-link:hover { color: var(--text); }

/* ── THEME TOGGLE ─────────────────────────────────────────── */
.theme-toggle-btn {
  position: relative;
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 1.5px solid rgba(124,111,247,0.4);
  background: rgba(124,111,247,0.12);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
  transition: border-color 0.3s, background 0.3s;
  flex-shrink: 0;
  color: var(--accent);
}
[data-theme="light"] .theme-toggle-btn {
  border-color: rgba(91,79,232,0.3);
  background: rgba(91,79,232,0.08);
}
.theme-toggle-btn:hover {
  border-color: var(--accent);
  background: var(--accent-glow);
}
.toggle-sun, .toggle-moon {
  position: absolute;
  width: 20px; height: 20px;
  color: var(--accent);
  transition: transform 0.5s var(--ease-out-expo), opacity 0.4s ease;
}
[data-theme="dark"]  .toggle-sun  { transform: translateY(0) rotate(0deg);      opacity: 1; }
[data-theme="dark"]  .toggle-moon { transform: translateY(30px) rotate(90deg);  opacity: 0; }
[data-theme="light"] .toggle-sun  { transform: translateY(-30px) rotate(-90deg); opacity: 0; }
[data-theme="light"] .toggle-moon { transform: translateY(0) rotate(0deg);      opacity: 1; }

/* ── HERO ─────────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 80px clamp(1.5rem, 6vw, 6rem) 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero-bg-glow {
  position: absolute;
  top: 20%; left: 50%; transform: translateX(-50%);
  width: 700px; height: 500px;
  background: radial-gradient(ellipse at center, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
  transition: background 0.5s;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 14px;
  border-radius: 100px;
  border: 1px solid var(--border);
  background: var(--card-bg);
  font-size: 0.78rem; font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 2rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  backdrop-filter: blur(8px);
}
.hero-badge-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.7); }
}
.hero-logo {
  width: clamp(60px, 8vw, 90px);
  height: auto;
  margin-bottom: 1.5rem;
  animation: float 6s ease-in-out infinite;
}
.hero-logo .logo-path { stroke: var(--logo-stroke); transition: stroke 0.4s; }
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-10px); }
}
h1 {
  font-family: 'Syne', 'Arial Black', Arial, sans-serif;
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 800;
  line-height: 1.0;
  letter-spacing: -0.04em;
  color: var(--text);
  max-width: 800px;
  margin-bottom: 1.5rem;
  transition: color 0.3s;
}
h1 .accent { color: var(--accent); }
.hero-sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-muted);
  max-width: 540px;
  line-height: 1.7;
  margin-bottom: 2.5rem;
  font-weight: 300;
}
.hero-actions {
  display: flex; gap: 1rem; flex-wrap: wrap; justify-content: center;
  margin-bottom: 3rem;
}
.hero-langs {
  display: flex; gap: 0.75rem; justify-content: center; align-items: center;
  flex-wrap: wrap;
}
.lang-tag {
  padding: 4px 12px;
  border-radius: 100px;
  border: 1px solid var(--border);
  font-size: 0.78rem; color: var(--text-muted); font-weight: 500;
  background: var(--card-bg);
}

/* ── BUTTONS ──────────────────────────────────────────────── */
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 28px;
  border-radius: 12px;
  background: var(--accent);
  color: #fff;
  font-family: 'DM Sans', 'Helvetica Neue', Arial, sans-serif;
  font-size: 0.95rem; font-weight: 600;
  text-decoration: none;
  border: none; cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
  box-shadow: 0 4px 24px var(--accent-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px var(--accent-glow);
  background: var(--accent2);
}
.btn-primary svg { flex-shrink: 0; }
.btn-secondary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 28px;
  border-radius: 12px;
  background: transparent;
  color: var(--text);
  font-family: 'DM Sans', 'Helvetica Neue', Arial, sans-serif;
  font-size: 0.95rem; font-weight: 500;
  text-decoration: none;
  border: 1.5px solid var(--border);
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}

/* ── SECTIONS ─────────────────────────────────────────────── */
section {
  padding: clamp(4rem, 8vw, 7rem) clamp(1.5rem, 6vw, 6rem);
}
.section-label {
  font-size: 0.75rem; font-weight: 600;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 0.75rem;
}
.section-title {
  font-family: 'Syne', 'Arial Black', Arial, sans-serif;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800; letter-spacing: -0.03em;
  color: var(--text); max-width: 560px;
  line-height: 1.15; margin-bottom: 1rem;
  transition: color 0.3s;
}
.section-body {
  font-size: 1rem; color: var(--text-muted);
  max-width: 500px; line-height: 1.75; margin-bottom: 3.5rem;
}

/* ── FEATURES ─────────────────────────────────────────────── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5px;
  border: 1.5px solid var(--border);
  border-radius: 20px;
  overflow: hidden;
  background: var(--border);
}
@media (max-width: 900px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-card:last-child:nth-child(odd) {
    grid-column: 1 / -1; max-width: 50%; margin: 0 auto; width: 100%;
  }
}
@media (max-width: 560px) {
  .features-grid { grid-template-columns: 1fr; }
  .feature-card:last-child:nth-child(odd) { grid-column: auto; max-width: 100%; }
}
.feature-card {
  background: var(--card-bg);
  padding: 2rem;
  display: flex; flex-direction: column; gap: 0.85rem;
  transition: background 0.2s;
  backdrop-filter: blur(8px);
}
.feature-card:hover { background: var(--surface); }
.feature-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--accent-glow);
  border: 1px solid var(--accent);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent); flex-shrink: 0;
}
.feature-title {
  font-family: 'Syne', 'Arial Black', Arial, sans-serif;
  font-size: 1.05rem; font-weight: 700;
  color: var(--text); letter-spacing: -0.01em;
  transition: color 0.3s;
}
.feature-desc { font-size: 0.9rem; color: var(--text-muted); line-height: 1.65; }

/* ── WPM SECTION ──────────────────────────────────────────── */
.wpm-section { background: var(--bg2); transition: background 0.3s; }
.wpm-inner { max-width: 860px; margin: 0 auto; }
.wpm-bars { display: flex; flex-direction: column; gap: 2rem; margin-top: 3rem; }
.wpm-row { display: flex; flex-direction: column; gap: 0.6rem; }
.wpm-label-row { display: flex; justify-content: space-between; align-items: baseline; }
.wpm-label {
  font-family: 'Syne', 'Arial Black', Arial, sans-serif;
  font-weight: 700; font-size: 0.95rem;
  color: var(--text);
  display: flex; align-items: center; gap: 8px;
  transition: color 0.3s;
}
.wpm-label-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.wpm-value {
  font-family: 'Syne', 'Arial Black', Arial, sans-serif;
  font-weight: 800; font-size: 1.1rem;
  color: var(--text); transition: color 0.3s;
}
.wpm-track {
  width: 100%; height: 14px;
  background: var(--bg3); border-radius: 100px; overflow: hidden;
  transition: background 0.3s;
}
.wpm-fill {
  height: 100%; border-radius: 100px; width: 0%;
  transition: width 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}
.wpm-fill.keyboard { background: var(--text-dim); }
.wpm-fill.typra    { background: linear-gradient(90deg, var(--accent), var(--accent2)); }
.wpm-fill.expert   { background: var(--text-muted); }
.wpm-sublabel { font-size: 0.8rem; color: var(--text-dim); }
.wpm-callout {
  margin-top: 2.5rem; padding: 1.5rem 2rem;
  border-radius: 16px;
  background: var(--accent-glow); border: 1.5px solid var(--accent);
  display: flex; align-items: center; gap: 1rem; flex-wrap: wrap;
}
.wpm-callout-icon { font-size: 1.8rem; flex-shrink: 0; }
.wpm-callout-text { font-size: 0.95rem; color: var(--text-muted); line-height: 1.6; }
.wpm-callout-text strong { color: var(--accent2); font-weight: 700; }

/* ── HOW IT WORKS ─────────────────────────────────────────── */
.how-section { background: var(--bg2); transition: background 0.3s; }
.how-inner {
  max-width: 900px; margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start;
}
@media (max-width: 700px) {
  .how-inner { grid-template-columns: 1fr; gap: 2.5rem; }
}
.steps { display: flex; flex-direction: column; position: relative; }
.steps::before {
  content: '';
  position: absolute; left: 22px; top: 44px; bottom: 44px;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), transparent);
}
.step { display: flex; gap: 1.5rem; align-items: flex-start; padding: 1.5rem 0; }
.step-num {
  flex-shrink: 0; width: 46px; height: 46px;
  border-radius: 50%; border: 2px solid var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-family: 'Syne', 'Arial Black', Arial, sans-serif;
  font-weight: 800; font-size: 1rem;
  color: var(--accent); background: var(--bg2);
  z-index: 1; transition: background 0.3s;
}
.step-name {
  font-family: 'Syne', 'Arial Black', Arial, sans-serif;
  font-weight: 700; font-size: 1.05rem;
  color: var(--text); margin-bottom: 0.35rem; transition: color 0.3s;
}
.step-desc { font-size: 0.9rem; color: var(--text-muted); line-height: 1.6; }

/* ── LANGUAGES ────────────────────────────────────────────── */
.lang-cards {
  display: flex; gap: 1.5rem; justify-content: center; flex-wrap: wrap;
  margin-top: 3rem;
}
.lang-card {
  background: var(--card-bg); border: 1.5px solid var(--card-border);
  border-radius: 20px; padding: 2rem 2.5rem; text-align: center;
  flex: 1; min-width: 180px; max-width: 220px;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s, background 0.3s;
  backdrop-filter: blur(8px);
}
.lang-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px var(--accent-glow);
}
.lang-flag { font-size: 2.5rem; margin-bottom: 0.75rem; display: block; }
.lang-name {
  font-family: 'Syne', 'Arial Black', Arial, sans-serif;
  font-size: 1.1rem; font-weight: 700;
  color: var(--text); margin-bottom: 0.25rem; transition: color 0.3s;
}
.lang-native { font-size: 0.85rem; color: var(--text-muted); }

/* ── PRIVACY ──────────────────────────────────────────────── */
.privacy-section { background: var(--bg3); transition: background 0.3s; }
.privacy-inner {
  max-width: 900px; margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center;
}
@media (max-width: 700px) {
  .privacy-inner { grid-template-columns: 1fr; gap: 2.5rem; }
}
.privacy-visual { display: flex; align-items: center; justify-content: center; }
.privacy-shield { display: flex; flex-direction: column; gap: 1rem; }
.privacy-pill {
  display: flex; align-items: center; gap: 12px;
  background: var(--card-bg); border: 1.5px solid var(--card-border);
  border-radius: 14px; padding: 14px 20px;
  font-size: 0.88rem; color: var(--text-muted);
  backdrop-filter: blur(8px);
  transition: background 0.3s, border-color 0.3s, color 0.3s;
}
.privacy-pill-icon {
  width: 32px; height: 32px; border-radius: 8px;
  background: var(--accent-glow); border: 1px solid var(--accent);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent); flex-shrink: 0;
}

/* ── DOWNLOAD ─────────────────────────────────────────────── */
.download-section { text-align: center; position: relative; overflow: hidden; }
.download-section::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 0%, var(--accent-glow) 0%, transparent 65%);
  pointer-events: none;
}
.download-card {
  display: inline-flex; flex-direction: column; align-items: center; gap: 1.5rem;
  background: var(--card-bg); border: 1.5px solid var(--card-border);
  border-radius: 28px;
  padding: clamp(2.5rem, 5vw, 4rem) clamp(2rem, 6vw, 5rem);
  position: relative; backdrop-filter: blur(12px);
  max-width: 560px; margin: 0 auto;
  transition: background 0.3s, border-color 0.3s;
}
.download-card:hover { border-color: var(--accent); }
.download-badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 14px; border-radius: 100px;
  background: var(--accent-glow); border: 1px solid var(--accent);
  font-size: 0.78rem; color: var(--accent2); font-weight: 600;
}
.download-title {
  font-family: 'Syne', 'Arial Black', Arial, sans-serif;
  font-size: clamp(1.6rem, 3.5vw, 2.5rem);
  font-weight: 800; letter-spacing: -0.03em;
  color: var(--text); line-height: 1.1; transition: color 0.3s;
}
.download-meta { font-size: 0.85rem; color: var(--text-dim); }

/* ── FOOTER ───────────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--border);
  padding: 2rem clamp(1.5rem, 6vw, 6rem);
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap;
  gap: 1rem; transition: border-color 0.3s;
}
.footer-left { display: flex; align-items: center; gap: 10px; }
.footer-left svg .logo-path { stroke: var(--logo-stroke); transition: stroke 0.3s; }
.footer-text { font-size: 0.82rem; color: var(--text-muted); }
.footer-right { font-size: 0.82rem; color: var(--text-dim); }

/* ── SCROLL REVEAL ────────────────────────────────────────── */
.reveal {
  opacity: 0; transform: translateY(24px);
  transition: opacity 0.7s var(--ease-out-expo), transform 0.7s var(--ease-out-expo);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ── RESPONSIVE ───────────────────────────────────────────── */
@media (max-width: 600px) {
  .nav-link { display: none; }
}