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

/* ===== BODY ===== */
body {
  font-family: 'Segoe UI', sans-serif;
  background: #0f172a;
  color: #e2e8f0;
}

/* ===== HEADER ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #020617; /* fallback instead of backdrop-filter */
  border-bottom: 1px solid #1e293b;
}

.header-inner {
  max-width: 1100px;
  margin: auto;
  padding: 18px 20px;

  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-weight: 700;
  font-size: 18px;
  color: #e2e8f0;
}

/* NAV */
.nav {
  display: flex;
  align-items: center;
}

.nav a {
  margin-left: 20px;
  text-decoration: none;
  color: #94a3b8;
  font-size: 14px;
  transition: 0.2s;
}

.nav a:hover {
  color: #38bdf8;
}

/* BUTTONS */
.btn-primary {
  background: #38bdf8;
  color: #020617 !important;
  padding: 8px 14px;
  border-radius: 6px;
  font-weight: 600;
}

.btn-outline {
  border: 1px solid #334155;
  padding: 8px 14px;
  border-radius: 6px;
}

/* ===== MAIN CONTAINER ===== */
.container {
  max-width: 900px;
  margin: 60px auto;
  text-align: center;
}

/* ===== TEXT BOX ===== */
.text {
  background: #020617;
  padding: 25px;
  border-radius: 12px;
  font-size: 22px;
  line-height: 1.6;
  text-align: left;
  margin-top: 20px;
}

/* ===== TYPING STATES ===== */
.char {
  opacity: 0.4;
}

.correct {
  color: #22c55e;
  opacity: 1;
}

.incorrect {
  color: #ef4444;
  opacity: 1;
}

.active {
  border-bottom: 2px solid #38bdf8;
  opacity: 1;
}

/* ===== INPUT ===== */
.hidden {
  opacity: 0;
  position: absolute;
}

/* ===== STATS ===== */
.stats {
  margin-top: 20px;
  font-size: 18px;
  color: #cbd5f5;
}

/* ===== BUTTON ===== */
button {
  margin-top: 20px;
  padding: 12px 25px;
  background: #38bdf8;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-weight: bold;
}

button:hover {
  opacity: 0.9;
}

/* ===== FORMS ===== */
input {
  padding: 10px;
  margin: 8px;
  border-radius: 6px;
  border: 1px solid #1e293b;
  background: #020617;
  color: #e2e8f0;
}

/* ===== FOOTER ===== */
.footer {
  margin-top: 100px;
  border-top: 1px solid #1e293b;
  padding: 30px 20px;
  text-align: center;
}

.footer p {
  color: #94a3b8;
  margin: 5px 0;
}

.footer .sub {
  font-size: 13px;
  color: #64748b;
}