:root {
  --bg: #0f0e0c;
  --surface: #1a1814;
  --gold: #e8a835;
  --rust: #c0522a;
  --cream: #f0e8d4;
  --muted: #6b6150;
  --success: #5dba6e;
  --wrong: #d94f4f;
}

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

body {
  background: var(--bg);
  color: var(--cream);
  font-family: "Noto Serif", serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

/* decorative background pattern */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    repeating-linear-gradient(
      45deg,
      transparent,
      transparent 40px,
      rgba(232, 168, 53, 0.03) 40px,
      rgba(232, 168, 53, 0.03) 41px
    ),
    repeating-linear-gradient(
      -45deg,
      transparent,
      transparent 40px,
      rgba(192, 82, 42, 0.03) 40px,
      rgba(192, 82, 42, 0.03) 41px
    );
  pointer-events: none;
  z-index: 0;
}

/* top ornament bar */
.ornament-top {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  background: linear-gradient(
    90deg,
    var(--rust),
    var(--gold),
    var(--rust)
  );
}

.ornament-bottom {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 6px;
  background: linear-gradient(
    90deg,
    var(--rust),
    var(--gold),
    var(--rust)
  );
}

.container {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  width: min(600px, 90vw);
  text-align: center;
}

/* header label */
.label {
  font-family: "Unbounded", sans-serif;
  font-size: 0.65rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 2.5rem;
}

/* the big word display */
/* Настройка шрифта вопроса: измените значения clamp(min, preferred, max) */
.word-display {
  font-family: "Unbounded", sans-serif;
  font-size: clamp(3.5rem, 12vw, 7rem);
  font-weight: 900;
  line-height: 1;
  color: var(--cream);
  letter-spacing: -0.02em;
  min-height: 1.2em;
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    opacity 0.25s ease,
    transform 0.25s ease;
  margin-bottom: 0.6rem;
}

.word-display.fade-out {
  opacity: 0;
  transform: translateY(-8px);
}

.word-display.fade-in {
  animation: slideIn 0.35s ease forwards;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* gold underline accent */
.accent-line {
  width: 60px;
  height: 3px;
  background: var(--gold);
  border-radius: 2px;
  margin-bottom: 3rem;
  transition: width 0.3s ease;
}

/* input */
.input-wrap {
  width: 100%;
  position: relative;
  margin-bottom: 1.5rem;
}

input[type="text"] {
  width: 100%;
  background: var(--surface);
  border: 2px solid var(--muted);
  border-radius: 4px;
  color: var(--cream);
  font-family: "Unbounded", sans-serif;
  /* Настройка шрифта поля ввода: измените значения clamp(min, preferred, max) */
  font-size: clamp(2rem, 7vw, 4rem);
  font-weight: 700;
  text-align: center;
  padding: 0.5em 0.4em;
  outline: none;
  transition:
    border-color 0.2s,
    box-shadow 0.2s,
    background 0.2s;
  letter-spacing: 0.04em;
}

input[type="text"]::placeholder {
  color: var(--muted);
  font-size: 0.55em;
  letter-spacing: 0.15em;
}

input[type="text"]:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(232, 168, 53, 0.15);
}

input[type="text"].correct {
  border-color: var(--success);
  background: rgba(93, 186, 110, 0.07);
  box-shadow: 0 0 0 3px rgba(93, 186, 110, 0.15);
}

input[type="text"].wrong {
  border-color: var(--wrong);
  animation: shake 0.35s ease;
}

@keyframes shake {
  0%,
  100% {
    transform: translateX(0);
  }
  20% {
    transform: translateX(-8px);
  }
  40% {
    transform: translateX(8px);
  }
  60% {
    transform: translateX(-5px);
  }
  80% {
    transform: translateX(5px);
  }
}

/* button */
button {
  font-family: "Unbounded", sans-serif;
  font-size: clamp(0.9rem, 2.5vw, 1.1rem);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--bg);
  background: var(--gold);
  border: none;
  border-radius: 4px;
  padding: 1em 3em;
  cursor: pointer;
  transition:
    background 0.2s,
    transform 0.1s;
  margin-bottom: 2.5rem;
}

button:hover {
  background: #f0b840;
}
button:active {
  transform: scale(0.97);
}

.button-group {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 2.5rem;
}

#learnedBtn {
  background: var(--rust);
  font-size: clamp(0.75rem, 2vw, 0.9rem);
  padding: 0.8em 1.5em;
}

#learnedBtn:hover {
  background: #d66038;
}

/* feedback */
/* Настройка шрифта обратной связи: измените значения clamp(min, preferred, max) */
.feedback {
  font-family: "Unbounded", sans-serif;
  font-size: clamp(2.5rem, 8vw, 4rem);
  font-weight: 900;
  min-height: 1.4em;
  opacity: 0;
  transform: scale(0.8);
  transition:
    opacity 0.3s ease,
    transform 0.3s ease;
  color: var(--success);
}

.feedback.visible {
  opacity: 1;
  transform: scale(1);
}

.feedback.wrong-text {
  color: var(--wrong);
  font-size: clamp(2rem, 6vw, 3rem);
  font-weight: 400;
  font-family: "Noto Serif", serif;
  letter-spacing: 0.02em;
}

/* counter */
.counter {
  position: fixed;
  top: 1.5rem;
  right: 2rem;
  font-family: "Unbounded", sans-serif;
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.1em;
  z-index: 2;
}

.counter span {
  color: var(--gold);
}

/* learned words list */
.learned-words {
  position: fixed;
  right: 2rem;
  top: 3rem;
  font-family: "Unbounded", sans-serif;
  font-size: 0.6rem;
  color: var(--muted);
  letter-spacing: 0.05em;
  z-index: 2;
  max-width: 250px;
  text-align: right;
  line-height: 1.6;
}

.learned-word {
  text-decoration: line-through;
  display: inline-block;
  margin-left: 0.5rem;
}

.learned-word:after {
  content: " ";
}

/* hint text */
.hint {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: "Unbounded", sans-serif;
  font-size: 0.65rem;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  z-index: 2;
  white-space: nowrap;
}

/* reset button */
.control-buttons {
  position: fixed;
  bottom: 2rem;
  left: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  z-index: 2;
}

#saveBtn,
#loadBtn,
#resetBtn,
#helpBtn {
  background: transparent;
  border: 1px solid var(--muted);
  color: var(--muted);
  font-family: "Unbounded", sans-serif;
  font-size: 0.55rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.5em 0.8em;
  cursor: pointer;
  border-radius: 3px;
  margin-bottom: 0;
  transition:
    color 0.2s,
    border-color 0.2s;
}

#saveBtn:hover,
#loadBtn:hover,
#resetBtn:hover,
#helpBtn:hover {
  color: var(--wrong);
  border-color: var(--wrong);
  background: transparent;
}
.footer-link {
  position: fixed;
  bottom: 12px;
  right: 12px;
  z-index: 10;
  font-size: 0.75rem;
  color: var(--muted);
  text-decoration: none;
}

.footer-link:hover {
  color: var(--gold);
  text-decoration: underline;
}

/* Mobile: hide help, save, load buttons on narrow screens */
@media (max-width: 768px) {
  body {
    justify-content: flex-start;
    padding-top: 0.5rem;
  }

  #helpBtn,
  #saveBtn,
  #loadBtn,
  #resetBtn {
    display: none;
  }

  .label,
  .hint {
    display: none;
  }

  .counter {
    display: none;
  }

  .learned-words {
    display: none;
  }

  .word-display {
    /* Мобильный режим: настройка размера шрифта вопроса */
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    margin-bottom: 0.2rem;
  }

  input[type="text"] {
    /* Мобильный режим: настройка размера шрифта поля ввода */
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    padding: 0.25em 0.2em;
    width: 90vw;
  }

  button {
    /* Мобильный режим: настройка размера шрифта кнопок */
    font-size: clamp(1rem, 2vw, 2rem);
    margin-bottom: 0;
  }

  #learnedBtn {
    /* Мобильный режим: настройка размера шрифта кнопки "Выучила" */
    font-size: clamp(1rem, 2vw, 2rem);
    /* padding: 0.4em 0.75em;*/
  }

  .button-group {
    margin-bottom: 0.5rem;
    gap: 0.5rem;
  }

  .feedback {
    /* Мобильный режим: настройка размера шрифта обратной связи */
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    min-height: 1.2em;
  }

  .feedback.wrong-text {
    /* Мобильный режим: настройка размера шрифта для неправильного ответа */
    font-size: clamp(1.5rem, 4vw, 2.5rem);
  }

  .input-wrap {
    margin-bottom: 0.5rem;
  }

  .accent-line {
    margin-bottom: 0.8rem;
  }
}