/* Self-hosted fonts (preferred) */
@font-face {
  font-display: swap;
  font-family: 'Poppins';
  font-style: normal;
  font-weight: 400;
  src: url('../fonts/poppins-v22-latin-regular.woff2') format('woff2');
}
@font-face {
  font-display: swap;
  font-family: 'Poppins';
  font-style: normal;
  font-weight: 700;
  src: url('../fonts/poppins-v22-latin-700.woff2') format('woff2');
}
@font-face {
  font-display: swap;
  font-family: 'Poppins';
  font-style: normal;
  font-weight: 800;
  src: url('../fonts/poppins-v22-latin-800.woff2') format('woff2');
}

/* Google Fonts fallback */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;700;800&display=swap');

/* ─── Dark theme (default)  */
:root {
  --bg:            #0d0d0d;
  --border:        #2a2a2a;
  --accent:        #e8ff47;
  --accent-dim:    #b8cc30;
  --accent-text:   #0d0d0d;
  --text:          #f0f0f0;
  --text-muted:    #555;
  --correct:       #3ddc84;
  --wrong:         #ff4c4c;
  --correct-bg:    rgba(61, 220, 132, 0.08);
  --wrong-bg:      rgba(255, 76, 76, 0.08);
  --hover-bg:      rgba(232, 255, 71, 0.05);
  --restart-bg:    #1a1a1a;
  --restart-hover: #242424;
  --radius:        12px;
}

/* ─── Light theme  */
@media (prefers-color-scheme: light) {
  :root {
    --bg:            #f2f2ed;
    --border:        #d8d8d0;
    --accent:        #1a1a1a;
    --accent-dim:    #333;
    --accent-text:   #ffffff;
    --text:          #1a1a1a;
    --text-muted:    #999;
    --correct:       #1a9e5c;
    --wrong:         #d93025;
    --correct-bg:    rgba(26, 158, 92, 0.08);
    --wrong-bg:      rgba(217, 48, 37, 0.08);
    --hover-bg:      rgba(0, 0, 0, 0.04);
    --restart-bg:    #e8e8e2;
    --restart-hover: #deded8;
  }
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Poppins', sans-serif;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.quiz-container {
  width: 100%;
  max-width: 540px;
}

/* ─── Header  */
.quiz-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 1.2rem;
  border-bottom: 1px solid var(--border);
}

.logo {
  font-family: 'Poppins', sans-serif;
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  color: var(--accent);
}

.questions-counter {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ─── Timer  */
.timer {
  font-family: 'Poppins', sans-serif;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--accent);
}

/* ─── Mode selector  */
#select-mode {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.3rem 0.6rem;
  font-family: 'Poppins', sans-serif;
  font-size: 0.78rem;
  cursor: pointer;
}

/* ─── Progress Bar  */
.progress-bar-track {
  height: 2px;
  background: var(--border);
  width: 100%;
}

.progress-bar-fill {
  height: 100%;
  width: 0%;
  background: var(--accent);
  transition: width 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── Body  */
.quiz-body {
  padding: 2.4rem 0 2rem;
  min-height: 300px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.question {
  font-family: 'Poppins', sans-serif;
  font-size: 1.55rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 2rem;
  letter-spacing: -0.025em;
}

.answers {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

/* ─── Answer Buttons  */
.answer-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  font-family: 'Poppins', sans-serif;
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.85rem 1.1rem;
  border-radius: var(--radius);
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transition: border-color 0.15s, background 0.15s, color 0.15s, transform 0.12s;
}

.answer-btn::before {
  content: '';
  display: inline-block;
  width: 18px;
  height: 18px;
  min-width: 18px;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  transition: border-color 0.15s, background 0.15s;
}

.answer-btn:hover:not(:disabled) {
  border-color: var(--accent);
  background: var(--hover-bg);
  transform: translateX(4px);
}

.answer-btn:hover:not(:disabled)::before { border-color: var(--accent); }
.answer-btn:disabled { cursor: default; }

.answer-btn.correct {
  border-color: var(--correct);
  background: var(--correct-bg);
  color: var(--correct);
  transform: none;
}
.answer-btn.correct::before { background: var(--correct); border-color: var(--correct); }

.answer-btn.wrong {
  border-color: var(--wrong);
  background: var(--wrong-bg);
  color: var(--wrong);
  transform: none;
}
.answer-btn.wrong::before { background: var(--wrong); border-color: var(--wrong); }

/* ─── Footer  */
.quiz-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1.4rem;
  border-top: 1px solid var(--border);
}

.score {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

.btn-group { display: flex; gap: 0.6rem; }

.next-btn, .restart-btn {
  font-family: 'Poppins', sans-serif;
  font-size: 0.88rem;
  font-weight: 600;
  padding: 0.6rem 1.4rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
}

.next-btn { background: var(--accent); color: var(--accent-text); }
.next-btn:hover { background: var(--accent-dim); transform: scale(1.04); }

.restart-btn { background: var(--restart-bg); color: var(--text); border: 1px solid var(--border); }
.restart-btn:hover { background: var(--restart-hover); transform: scale(1.04); }

/* ─── End screen  */
.end-quote {
  display: block;
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-top: 0.8rem;
  font-style: italic;
  line-height: 1.5;
}
@keyframes einblenden {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.answer-btn {
    animation: einblenden 0.3s ease forwards;
}