/* ============================================================
   STEMfest — Sequence Sleuth Game Stylesheet
   Inherits all CSS custom properties from style.css
   ============================================================ */

/* ---------- Page ---------- */
.game-page {
  background: var(--color-bg-alt);
}

.back-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-muted);
  transition: color var(--transition);
  padding: 0.25rem 0;
}

.back-link:hover { color: var(--color-stem); }

/* ---------- Game layout ---------- */
.game-main {
  position: relative;
  min-height: calc(100vh - var(--header-h));
}

.game-screen {
  position: absolute;
  inset: 0;
  min-height: 100%;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.5rem 1rem 3rem;
  opacity: 0;
  pointer-events: none;
  transform: translateY(16px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.game-screen.active {
  opacity: 1;
  pointer-events: all;
  transform: none;
  position: relative; /* takes up natural height when active */
}

/* Game container — inherits .container max-width pattern */
.game-container {
  width: 100%;
  max-width: 680px;
  margin-inline: auto;
}

/* ============================================================
   INTRO SCREEN
   ============================================================ */

.intro-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  text-align: center;
}

.game-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.game-icon {
  font-size: 4rem;
  display: block;
  animation: bob 2.4s ease-in-out infinite;
  will-change: transform;
}

@keyframes bob {
  0%, 100% { transform: translateY(0) rotate(-4deg); }
  50%       { transform: translateY(-10px) rotate(4deg); }
}

.game-title {
  font-size: clamp(2.75rem, 9vw, 5rem);
  font-weight: 900;
  line-height: 1;
  color: var(--color-stem);
  letter-spacing: -2px;
}

.game-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 420px;
}

.game-rules {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.7rem 1.25rem;
  font-size: 0.95rem;
  color: var(--color-text);
  box-shadow: var(--shadow-card);
}

.game-rules-detail {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

/* Mode selection buttons */
.mode-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  width: 100%;
  max-width: 580px;
}

.mode-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.45rem;
  padding: 1.5rem 0.75rem;
  background: #fff;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-family: inherit;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.mode-btn:hover,
.mode-btn:focus-visible {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  outline: none;
}

.mode-btn[data-mode="easy"]:hover,
.mode-btn[data-mode="easy"]:focus-visible   { border-color: #34a853; }
.mode-btn[data-mode="medium"]:hover,
.mode-btn[data-mode="medium"]:focus-visible { border-color: #f4a100; }
.mode-btn[data-mode="hard"]:hover,
.mode-btn[data-mode="hard"]:focus-visible   { border-color: #ea4335; }

.mode-emoji { font-size: 1.75rem; }

.mode-name {
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-text);
}

.mode-detail {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  text-align: center;
}

/* ============================================================
   GAME HUD
   ============================================================ */

.game-hud {
  display: flex;
  align-items: center;
  gap: 1rem;
  width: 100%;
  max-width: 680px;
  margin: 0 auto 1.75rem;
  padding: 0.75rem 1.25rem;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  flex-shrink: 0;
}

.hud-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 58px;
}

.hud-score-item { align-items: flex-end; }

.hud-label {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.hud-value {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--color-text);
  line-height: 1.2;
}

/* Timer bar */
.timer-track {
  flex: 1;
  height: 10px;
  background: var(--color-border);
  border-radius: 100px;
  overflow: hidden;
}

.timer-fill {
  height: 100%;
  width: 100%;
  background: #34a853;
  border-radius: 100px;
  transform-origin: left;
  transition: width 0.1s linear, background-color 0.4s ease;
}

.timer-fill.warn   { background: #f4a100; }
.timer-fill.danger { background: #ea4335; }

/* ============================================================
   SEQUENCE DISPLAY
   ============================================================ */

.sequence-label {
  text-align: center;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
}

.sequence-row {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 2rem;
}

/* Number tiles */
.seq-card {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 76px;
  height: 76px;
  background: #fff;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-text);
  box-shadow: var(--shadow-card);
  flex-shrink: 0;
  user-select: none;
}

/* Adjust font size for wide numbers */
.seq-card.num-3 { font-size: 1.2rem; }
.seq-card.num-4 { font-size: 1rem; }
.seq-card.num-5 { font-size: 0.85rem; }

/* Arrow between sequence and unknown */
.seq-arrow {
  color: var(--color-text-muted);
  font-size: 1.25rem;
  font-weight: 300;
  flex-shrink: 0;
  padding-inline: 0.1rem;
}

/* The unknown "?" card */
.seq-card.unknown {
  background: linear-gradient(135deg, var(--color-stem) 0%, #5ea8ff 100%);
  border-color: transparent;
  color: #fff;
  font-size: 2rem;
  animation: pulse-unknown 1.6s ease-in-out infinite;
  will-change: box-shadow;
}

@keyframes pulse-unknown {
  0%, 100% { box-shadow: var(--shadow-card), 0 0 0 0 rgba(26, 115, 232, 0.35); }
  50%       { box-shadow: var(--shadow-hover), 0 0 0 8px rgba(26, 115, 232, 0.1); }
}

/* Correct answer animation */
.seq-card.result-correct {
  animation: card-correct 0.65s ease forwards;
}

@keyframes card-correct {
  0%   { transform: scale(1);    background: #fff;     border-color: var(--color-border); color: var(--color-text); }
  25%  { transform: scale(1.18); background: #e6f4ea;  border-color: #34a853; color: #188038; }
  60%  { transform: scale(1.06); }
  100% { transform: scale(1);    background: #e6f4ea;  border-color: #34a853; color: #188038; }
}

/* Wrong answer animation */
.seq-card.result-wrong {
  animation: card-wrong 0.5s ease forwards;
}

@keyframes card-wrong {
  0%   { transform: translateX(0);   background: #fff;     border-color: var(--color-border); }
  15%  { transform: translateX(-9px); background: #fce8e6; border-color: #ea4335; }
  30%  { transform: translateX(9px); }
  45%  { transform: translateX(-6px); }
  60%  { transform: translateX(6px); }
  75%  { transform: translateX(-3px); }
  100% { transform: translateX(0);   background: #fce8e6;  border-color: #ea4335; color: #c5221f; }
}

/* ============================================================
   ANSWER FORM
   ============================================================ */

.answer-form {
  display: flex;
  gap: 0.75rem;
  max-width: 440px;
  margin: 0 auto 1.5rem;
}

.answer-input {
  flex: 1;
  padding: 0.9rem 1.1rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 1.3rem;
  font-weight: 700;
  font-family: inherit;
  color: var(--color-text);
  background: #fff;
  text-align: center;
  transition: border-color var(--transition), box-shadow var(--transition);
  /* Hide browser spin buttons */
  -moz-appearance: textfield;
}

.answer-input::-webkit-inner-spin-button,
.answer-input::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }

.answer-input:focus {
  outline: none;
  border-color: var(--color-stem);
  box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.12);
}

.answer-input:disabled {
  background: #f5f7ff;
  color: var(--color-text-muted);
  cursor: not-allowed;
}

.answer-submit {
  border-radius: var(--radius-sm);
  white-space: nowrap;
  flex-shrink: 0;
}

/* ============================================================
   FEEDBACK BOX
   ============================================================ */

.feedback-box {
  min-height: 110px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem 1.5rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.feedback-box.visible {
  opacity: 1;
  transform: none;
}

.feedback-box.fb-correct {
  background: #e6f4ea;
  border-color: #34a853;
}

.feedback-box.fb-wrong {
  background: #fce8e6;
  border-color: #ea4335;
}

.feedback-box.fb-timeout {
  background: #fff8e6;
  border-color: #f4a100;
}

.fb-result {
  font-size: 1.2rem;
  font-weight: 800;
}

.fb-correct  .fb-result { color: #188038; }
.fb-wrong    .fb-result { color: #c5221f; }
.fb-timeout  .fb-result { color: #b06000; }

.fb-pattern {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.fb-hint {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  font-style: italic;
}

.fb-actions {
  display: flex;
  gap: 0.6rem;
  margin-top: 0.4rem;
  flex-wrap: wrap;
  justify-content: center;
}

.fb-btn {
  margin-top: 0.5rem;
  padding: 0.55rem 1.3rem;
  font-size: 0.9rem;
  border-radius: var(--radius-sm);
}

/* ============================================================
   FINAL SCREEN
   ============================================================ */

.final-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  text-align: center;
  padding: 1rem 0;
}

.final-stars {
  font-size: 2.75rem;
  letter-spacing: 0.4rem;
  animation: star-pop 0.5s ease;
}

@keyframes star-pop {
  0%   { transform: scale(0.6); opacity: 0; }
  70%  { transform: scale(1.15); }
  100% { transform: scale(1);   opacity: 1; }
}

.final-heading {
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  font-weight: 900;
  color: var(--color-stem);
}

.final-score-display {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
  justify-content: center;
}

.final-score-number {
  font-size: clamp(3.5rem, 12vw, 5.5rem);
  font-weight: 900;
  color: var(--color-stem);
  line-height: 1;
}

.final-score-denom {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.final-message {
  font-size: 1rem;
  color: var(--color-text-muted);
  max-width: 380px;
}

/* Round summary grid */
.round-summary {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.5rem;
  width: 100%;
  max-width: 380px;
}

.summary-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15rem;
  padding: 0.6rem 0.25rem;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-card);
}

.summary-rnd  { font-size: 0.6rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--color-text-muted); }
.summary-icon { font-size: 1.2rem; }
.summary-pts  { font-size: 0.85rem; font-weight: 800; color: var(--color-text); }

/* Final buttons */
.final-buttons {
  display: flex;
  gap: 0.875rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 0.5rem;
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--color-stem);
  color: var(--color-stem);
}

.btn-outline:hover {
  background: var(--color-stem);
  color: #fff;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 600px) {
  .mode-grid {
    grid-template-columns: 1fr;
    max-width: 300px;
  }

  .mode-btn { flex-direction: row; justify-content: flex-start; padding: 1rem 1.25rem; gap: 0.75rem; }
  .mode-detail { text-align: left; }

  .seq-card {
    width: 58px;
    height: 58px;
    font-size: 1.15rem;
    border-radius: var(--radius-sm);
  }

  .seq-card.num-3 { font-size: 0.95rem; }
  .seq-card.num-4 { font-size: 0.8rem; }
  .seq-card.num-5 { font-size: 0.7rem; }

  .seq-card.unknown { font-size: 1.5rem; }

  .answer-form { flex-direction: column; }

  .game-hud { gap: 0.6rem; padding: 0.6rem 0.9rem; }
  .hud-value { font-size: 1rem; }
}