@import url('./tokens.css');

.solver-card {
  margin-top: 28px;
}

.solver-card[data-solver-root] {
  width: min(100%, 760px);
  margin: 0 auto;
  padding: clamp(8px, 3vw, 14px);
  box-sizing: border-box;
  background: #f6f8fb;
}

.solver-keypad {
  margin-top: 12px;
}

.solver-notes ul {
  padding-left: 20px;
  margin: 12px 0 20px;
}

.solver-notes li {
  margin-bottom: 6px;
}

.solver-mini-card {
  margin-top: 18px;
  padding: 16px;
  border-radius: 18px;
  background: rgba(17, 24, 39, 0.04);
}

.solver-mini-card a {
  display: inline-flex;
  margin-top: 4px;
  font-weight: 600;
}

.solver-cell:focus-visible {
  outline: 2px solid var(--accent-color);
  outline-offset: -2px;
}

.solver-cell--solved {
  color: var(--accent-color);
}

.solver-status--error {
  background: rgba(220, 38, 38, 0.12);
  color: #991b1b;
}

.solver-status--success {
  background: rgba(16, 185, 129, 0.18);
  color: #064e3b;
}

.solver-tips {
  margin-top: 40px;
}

.solver-tips ul {
  padding-left: 20px;
  margin: 12px 0 0;
}

.solver-tips li {
  margin-bottom: 8px;
}

.solver-tips h2 {
  margin: 0 0 10px;
}

.solver-tips p {
  margin: 0 0 12px;
  color: rgba(17, 17, 17, 0.75);
  line-height: 1.55;
}

.seo-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 12px;
}

.seo-links a {
  padding: 12px 18px;
  border-radius: 999px;
  background: #e5e7eb;
  text-decoration: none;
  font-weight: 700;
  color: rgba(17, 17, 17, 0.78);
  font-size: 1rem;
  box-shadow: 0 10px 24px rgba(17, 17, 17, 0.08);
}

.seo-links a:hover,
.seo-links a:focus-visible {
  background: rgba(37, 99, 235, 0.12);
  color: #1f4bdd;
}

.seo-cta {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  margin: 26px 0 12px;
}

.seo-cta a {
  text-decoration: none;
  font-weight: 700;
  color: #2563eb;
}

.seo-cta .seo-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  border-radius: 14px;
  background: rgba(37, 99, 235, 0.18);
  color: #0b55f0;
  box-shadow: 0 20px 38px rgba(37, 99, 235, 0.28);
  font-size: 1.05rem;
}

.seo-cta .seo-primary:hover,
.seo-cta .seo-primary:focus-visible {
  background: rgba(37, 99, 235, 0.22);
}

.app-store-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 999px;
  background: #1f1f1f;
  color: #fff;
  text-decoration: none;
  box-shadow: 0 18px 32px rgba(0, 0, 0, 0.24);
}

.app-store-icon {
  font-size: 1.6rem;
  line-height: 1;
}

.app-store-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.app-store-overline {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.8;
}

.app-store-title {
  font-size: 1.05rem;
  font-weight: 700;
}

.app-store-badge:hover,
.app-store-badge:focus-visible {
  background: #111;
}

/* Core board/layout styles pulled from original site */
.board-wrapper {
  width: 100%;
  display: flex;
  justify-content: center;
  margin-bottom: 22px;
  padding: 6px 0 10px;
}

.sudoku-board {
  position: relative;
  width: min(100%, 560px);
  aspect-ratio: 1;
  background: #ffffff;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: none;
  border: 2px solid #2f3d55;
  display: grid;
  grid-template-columns: repeat(9, 1fr);
  grid-template-rows: repeat(9, 1fr);
}

.cell {
  position: relative;
  border: 0.5px solid rgba(17, 17, 17, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Inter', sans-serif;
  font-size: clamp(1rem, 2.2vw, 1.55rem);
  font-weight: 600;
  cursor: pointer;
  user-select: none;
  transition: background 0.2s ease, color 0.2s ease;
  background: rgba(255, 255, 255, 0.98);
  color: #1f2937;
}

.cell.is-given {
  font-weight: 500;
  color: rgba(17, 24, 39, 0.5);
}

.cell.is-selected {
  background: var(--accent-strong, rgba(37, 99, 235, 0.1));
  color: #0b0b0b;
  text-shadow: none;
}

.cell.is-peer {
  background: var(--accent-peer, rgba(37, 99, 235, 0.025));
}

.cell.is-same-value {
  background: var(--accent-same, rgba(37, 99, 235, 0.045));
}

.cell.is-conflict {
  background: rgba(220, 38, 38, 0.12);
}

.sudoku-board::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      to right,
      transparent 0 calc(100% / 9 - 0.5px),
      var(--grid-thin) calc(100% / 9 - 0.5px) calc(100% / 9),
      transparent calc(100% / 9) calc(100% / 9 + 0.5px)
    ),
    repeating-linear-gradient(
      to bottom,
      transparent 0 calc(100% / 9 - 0.5px),
      var(--grid-thin) calc(100% / 9 - 0.5px) calc(100% / 9),
      transparent calc(100% / 9) calc(100% / 9 + 0.5px)
    );
  pointer-events: none;
}

.sudoku-board::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(
      to right,
      transparent calc(100% / 3 - 2.5px),
      #2f3d55 calc(100% / 3 - 2.5px) calc(100% / 3 + 2.5px),
      transparent calc(100% / 3 + 2.5px)
    ),
    linear-gradient(
      to right,
      transparent calc(200% / 3 - 2.5px),
      #2f3d55 calc(200% / 3 - 2.5px) calc(200% / 3 + 2.5px),
      transparent calc(200% / 3 + 2.5px)
    ),
    linear-gradient(
      to bottom,
      transparent calc(100% / 3 - 2.5px),
      #2f3d55 calc(100% / 3 - 2.5px) calc(100% / 3 + 2.5px),
      transparent calc(100% / 3 + 2.5px)
    ),
    linear-gradient(
      to bottom,
      transparent calc(200% / 3 - 2.5px),
      #2f3d55 calc(200% / 3 - 2.5px) calc(200% / 3 + 2.5px),
      transparent calc(200% / 3 + 2.5px)
    );
  pointer-events: none;
}

.tutorial-card {
  border-radius: 0;
  padding: 0;
  border: none;
  background: transparent;
  box-shadow: none;
}

.tutorial-layout {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.tutorial-board {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.tutorial-board__label {
  font-size: 1.02rem;
  letter-spacing: 0.04em;
  text-transform: none;
  color: rgba(17, 17, 17, 0.68);
  font-weight: 600;
  text-align: center;
  margin: 4px 0 10px;
}

.tutorial-keypad {
  display: grid;
  grid-template-columns: repeat(9, minmax(40px, 1fr));
  gap: 10px;
}

.tutorial-keypad button {
  border: none;
  border-radius: 14px;
  background: #f8fafc;
  color: #1f2937;
  padding: 12px 0;
  font-weight: 600;
  font-size: 1.02rem;
  cursor: pointer;
  transition: background 0.18s ease, transform 0.15s ease, box-shadow 0.18s ease;
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.08);
}

.tutorial-keypad button:hover,
.tutorial-keypad button:focus-visible {
  background: #e5edfa;
  color: #1f2937;
  transform: translateY(-1px);
}

.tutorial-actions {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 16px;
  max-width: 820px;
  width: 100%;
  margin-left: auto;
  margin-right: auto;
}

.tutorial-actions button {
  flex: 1 1 auto;
  border-radius: 18px;
  border: none;
  background: #eef2f7;
  padding: 14px 18px;
  font-weight: 700;
  color: #2f3d55;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8), 0 8px 18px rgba(15, 23, 42, 0.06);
  width: 100%;
  text-transform: none;
  font-size: 1.05rem;
}

.tutorial-actions button:hover,
.tutorial-actions button:focus-visible {
  transform: translateY(-1px);
  background: #e4e8f0;
}

.solver-actions {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(2, minmax(140px, 1fr));
  gap: 12px;
  align-items: stretch;
}

.solver-actions [data-action="solver-solve"] {
  display: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.solver-actions .solver-primary {
  grid-column: 1 / -1;
  background: #1f2937;
  color: #fff;
  border: none;
  padding: 16px 18px;
  font-size: 1.08rem;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.2);
  width: 100%;
  border-radius: 18px;
  margin-top: 4px;
}

.tutorial-status {
  margin-top: 18px;
  padding: 18px 22px;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(223, 227, 255, 0.26), rgba(235, 240, 255, 0.62));
  font-size: 1.02rem;
  line-height: 1.5;
  text-align: center;
  color: #475569;
  width: min(90%, 760px);
  margin-left: auto;
  margin-right: auto;
}

/* Hide any stray legacy status blocks outside the solver board */
.tutorial-status:not([data-solver-status]) {
  display: none !important;
}

/* Hide non-root solver card statuses (e.g., legacy blocks above the grid) */
.solver-card:not([data-solver-root]) .tutorial-status {
  display: none !important;
}

/* Ensure the solver shortcode status remains visible */
.solver-card[data-solver-root] .tutorial-status[data-solver-status] {
  display: block !important;
}

.tutorial-notes {
  flex: 0 0 280px;
  border-radius: 20px;
  padding: 18px;
  border: 1px solid rgba(17, 17, 17, 0.05);
  background: rgba(17, 24, 39, 0.04);
  width: 100%;
}

.tutorial-notes ul {
  margin: 12px 0 18px;
  padding-left: 20px;
  display: grid;
  gap: 8px;
}

@media (max-width: 640px) {
  .solver-card[data-solver-root] {
    width: 100%;
    padding: 8px 10px 16px;
  }

  .tutorial-layout,
  .tutorial-board {
    width: 100%;
  }

  .board-wrapper {
    padding: 0;
  }

  .sudoku-board {
    width: min(100%, calc(100vw - 16px));
    border-radius: 18px;
    box-shadow: 0 16px 32px rgba(15, 23, 42, 0.14);
  }

  .tutorial-keypad {
    grid-template-columns: repeat(5, minmax(44px, 1fr));
    gap: 10px;
  }

  .tutorial-keypad button {
    padding: 10px 0;
    font-size: 1rem;
    border-radius: 14px;
  }

  .tutorial-actions {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .solver-actions {
    grid-template-columns: repeat(2, minmax(140px, 1fr));
  }

  .solver-actions .solver-primary {
    margin-top: 6px;
  }

  .tutorial-status {
    width: 100%;
  }
}

@media (min-width: 540px) {
  .tutorial-actions,
  .solver-actions {
    grid-template-columns: repeat(2, minmax(180px, 1fr));
    justify-items: stretch;
  }
}