/* ==========================================================
   EIGAVERSA — Rules & Regulations Modal
   (Bank-style scroll-gated T&C checkbox system,
    adapted from the Word Quest event theme)
   ========================================================== */

.hidden {
  display: none !important;
}

.rules-overlay {
  position: fixed;
  inset: 0;
  z-index: 1200;
  background: rgba(5, 6, 8, 0.72);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.rules-card {
  position: relative;
  width: 100%;
  max-width: 660px;
  max-height: 92vh;
  overflow-y: auto;
  padding: clamp(1.5rem, 4vw, 2.25rem);
  text-align: left;
  background: linear-gradient(160deg, #15161a 0%, #1b1d22 100%);
  border: 1px solid var(--clr-border-strong);
  border-radius: var(--radius-lg);
  box-shadow: 0 32px 90px rgba(0, 0, 0, 0.75), inset 0 1px 0 rgba(255, 255, 255, 0.04);
  animation: rulesCardIn 0.45s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes rulesCardIn {
  from { opacity: 0; transform: translateY(26px) scale(0.97); }
  to   { opacity: 1; transform: none; }
}

.rules-close-x {
  position: absolute;
  top: 0.9rem;
  right: 0.9rem;
  width: 36px;
  height: 36px;
  min-width: 36px;
  min-height: 36px;
  border-radius: 50%;
  border: 1px solid var(--clr-border);
  background: rgba(233, 195, 119, 0.06);
  color: var(--clr-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 5;
}

.rules-close-x:hover {
  background: rgba(224, 96, 77, 0.14);
  border-color: rgba(224, 96, 77, 0.4);
  color: var(--clr-error);
  transform: rotate(90deg);
}

.rules-close-x:active {
  transform: rotate(90deg) scale(0.92);
}

.rules-modal-header {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin-bottom: 1.4rem;
  padding-bottom: 1.2rem;
  border-bottom: 2px solid rgba(233, 195, 119, 0.18);
}

.rules-header-icon {
  width: 54px;
  height: 54px;
  min-width: 54px;
  border-radius: var(--radius-md);
  background: var(--clr-gold-soft);
  border: 1px solid var(--clr-border-strong);
  color: var(--clr-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 0 24px rgba(212, 162, 76, 0.15);
}

.rules-modal-title {
  font-family: var(--font-display);
  margin-bottom: 0.15rem;
  font-size: clamp(1.5rem, 4.5vw, 1.85rem);
  letter-spacing: 0.03em;
  text-align: left;
  color: var(--clr-gold);
}

.rules-modal-subtitle {
  margin-bottom: 0;
  text-align: left;
  font-size: 0.95rem;
  color: #cfcbc0;
}

.rules-scroll-container {
  position: relative;
  max-height: 340px;
  overflow-y: auto;
  padding: 0.4rem 0.6rem 0.4rem 0.2rem;
  margin-bottom: 0.85rem;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  background: rgba(0, 0, 0, 0.18);
  scrollbar-width: thin;
  scrollbar-color: var(--clr-gold) rgba(233, 195, 119, 0.1);
  -webkit-overflow-scrolling: touch;
  mask-image: linear-gradient(to bottom, #000 82%, rgba(0, 0, 0, 0) 100%);
  -webkit-mask-image: linear-gradient(to bottom, #000 82%, rgba(0, 0, 0, 0) 100%);
  transition: mask-image 0.5s ease, -webkit-mask-image 0.5s ease;
}

.rules-scroll-container.rules-fully-scrolled {
  mask-image: none;
  -webkit-mask-image: none;
  border-color: rgba(127, 208, 163, 0.35);
  box-shadow: 0 0 0 1px rgba(127, 208, 163, 0.1), inset 0 0 24px rgba(127, 208, 163, 0.03);
}

.rules-scroll-container::-webkit-scrollbar {
  width: 6px;
}

.rules-scroll-container::-webkit-scrollbar-track {
  background: rgba(233, 195, 119, 0.06);
  border-radius: 99px;
}

.rules-scroll-container::-webkit-scrollbar-thumb {
  background: var(--clr-gold);
  border-radius: 99px;
}

.rules-scroll-container::-webkit-scrollbar-thumb:hover {
  background: var(--clr-primary);
}

.rule-item {
  display: flex;
  gap: 1rem;
  padding: 1.05rem 1rem;
  margin-bottom: 0.65rem;
  border-radius: var(--radius-md);
  background: rgba(233, 195, 119, 0.05);
  border: 1px solid rgba(233, 195, 119, 0.14);
  transition: var(--transition);
}

.rule-item:hover {
  background: rgba(233, 195, 119, 0.09);
  border-color: rgba(233, 195, 119, 0.3);
}

.rule-number {
  width: 44px;
  height: 44px;
  min-width: 44px;
  border-radius: var(--radius-sm);
  background: rgba(212, 162, 76, 0.18);
  color: var(--clr-gold);
  border: 1px solid rgba(212, 162, 76, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  flex-shrink: 0;
}

.rule-number-navy {
  background: rgba(96, 140, 220, 0.16);
  color: #a8c2ea;
  border-color: rgba(96, 140, 220, 0.35);
}

.rule-number-gold {
  background: linear-gradient(135deg, rgba(233, 195, 119, 0.28) 0%, rgba(212, 162, 76, 0.14) 100%);
  color: #f0cf8f;
  border-color: rgba(233, 195, 119, 0.5);
}

.rule-body {
  flex: 1;
  min-width: 0;
}

.rule-title {
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 0.3rem;
  letter-spacing: 0.02em;
}

.rule-text {
  font-size: 0.95rem;
  color: #cfcbc0;
  line-height: 1.7;
}

.rules-end-marker {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 1rem 0.75rem;
  margin: 0.25rem 0.4rem 0.85rem;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, rgba(127, 208, 163, 0.1) 0%, rgba(127, 208, 163, 0.03) 100%);
  border: 1px dashed rgba(127, 208, 163, 0.4);
  color: var(--clr-success);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-align: center;
}

.rules-scroll-hint {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 0.9rem;
  margin-bottom: 1rem;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(212, 162, 76, 0.16) 0%, rgba(212, 162, 76, 0.06) 100%);
  border: 1px solid rgba(212, 162, 76, 0.35);
  color: var(--clr-gold);
  font-size: 0.84rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}

.rules-scroll-hint .scroll-hint-arrow {
  animation: scrollHintBounce 1.4s ease-in-out infinite;
}

@keyframes scrollHintBounce {
  0%, 100% { transform: translateY(0); opacity: 1; }
  50%      { transform: translateY(3px); opacity: 0.75; }
}

.rules-scroll-hint.rules-unlocked {
  opacity: 0;
  transform: translateY(-6px) scale(0.96);
  max-height: 0;
  padding-top: 0;
  padding-bottom: 0;
  margin-top: 0;
  margin-bottom: 0;
  border-width: 0;
  pointer-events: none;
}

.rules-scroll-hint.rules-unlocked .scroll-hint-arrow {
  animation: none;
}

/* ── Checkbox System (Bank-Style) ── */
.rules-checkboxes {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  margin-bottom: 0.5rem;
}

.rules-checkbox-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.55rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--clr-border);
  background: rgba(255, 255, 255, 0.02);
  cursor: pointer;
  transition: var(--transition);
  user-select: none;
  -webkit-user-select: none;
}

.rules-checkbox-item:hover {
  background: rgba(212, 162, 76, 0.06);
  border-color: rgba(212, 162, 76, 0.3);
}

#rules-master-checkbox-wrapper {
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  filter: grayscale(0.35);
  opacity: 0.72;
}

#rules-master-checkbox-wrapper.checkbox-enabled {
  filter: grayscale(0);
  opacity: 1;
  background: linear-gradient(135deg, rgba(127, 208, 163, 0.08) 0%, rgba(212, 162, 76, 0.08) 100%);
  border-color: rgba(127, 208, 163, 0.4);
  animation: checkboxUnlockPop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes checkboxUnlockPop {
  0%   { transform: scale(1); }
  45%  { transform: scale(1.015); }
  100% { transform: scale(1); }
}

#rules-master-checkbox-wrapper.checkbox-enabled:hover {
  border-color: rgba(212, 162, 76, 0.55);
  transform: translateY(-1px);
}

#rules-master-checkbox-wrapper.checkbox-locked {
  cursor: not-allowed;
}

#rules-master-checkbox-wrapper.checkbox-locked:active {
  animation: lockedShake 0.35s ease;
}

@keyframes lockedShake {
  0%, 100% { transform: translateX(0); }
  25%      { transform: translateX(-3px); }
  75%      { transform: translateX(3px); }
}

.rules-checkbox-item input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

.checkbox-custom {
  width: 20px;
  height: 20px;
  min-width: 20px;
  min-height: 20px;
  border: 2px solid rgba(233, 195, 119, 0.35);
  border-radius: 5px;
  background: rgba(10, 11, 13, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  margin-top: 1px;
  position: relative;
}

.checkbox-custom::after {
  content: '';
  width: 11px;
  height: 6px;
  border-left: 2.5px solid #171207;
  border-bottom: 2.5px solid #171207;
  transform: rotate(-45deg) scale(0);
  transition: transform 0.2s cubic-bezier(0.3, 1.4, 0.5, 1);
  position: relative;
  top: -1px;
  left: 0;
}

.rules-checkbox-item input[type="checkbox"]:checked + .checkbox-custom {
  background: linear-gradient(135deg, #e9c377 0%, #b9893a 100%);
  border-color: #b9893a;
  box-shadow: 0 0 0 3px rgba(212, 162, 76, 0.2);
}

.rules-checkbox-item input[type="checkbox"]:checked + .checkbox-custom::after {
  transform: rotate(-45deg) scale(1);
}

.checkbox-label {
  font-size: 0.9rem;
  font-weight: 500;
  color: #d8d4c9;
  line-height: 1.55;
  flex: 1;
  padding-top: 1px;
}

.rules-checkbox-item input[type="checkbox"]:checked ~ .checkbox-label {
  color: var(--clr-gold);
  font-weight: 600;
}

.rules-master-checkbox {
  background: linear-gradient(135deg, rgba(212, 162, 76, 0.08) 0%, rgba(212, 162, 76, 0.03) 100%);
  border: 1.5px solid rgba(212, 162, 76, 0.35);
  padding: 0.85rem 1rem;
}

.rules-master-checkbox:hover {
  background: linear-gradient(135deg, rgba(212, 162, 76, 0.14) 0%, rgba(212, 162, 76, 0.05) 100%);
  border-color: rgba(212, 162, 76, 0.5);
}

.checkbox-master {
  width: 24px;
  height: 24px;
  min-width: 24px;
  min-height: 24px;
}

.checkbox-master-label {
  font-size: 0.98rem;
  padding-top: 3px;
  color: var(--clr-text);
  transition: all 0.3s ease;
}

/* Locked checkbox */
#rules-master-checkbox-wrapper .checkbox-custom {
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

#rules-master-checkbox-wrapper.checkbox-locked .checkbox-custom {
  background: rgba(148, 163, 184, 0.12);
  border-color: rgba(148, 163, 184, 0.35);
  position: relative;
}

#rules-master-checkbox-wrapper.checkbox-locked .checkbox-custom::before {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 7px;
  border: 1px dashed rgba(148, 163, 184, 0.4);
  opacity: 0.6;
}

#rules-master-checkbox-wrapper.checkbox-locked .checkbox-master-label {
  color: #8b8983;
}

#rules-master-checkbox-wrapper.checkbox-locked .checkbox-master-label::after {
  content: ' 🔒';
  font-size: 0.85em;
  margin-left: 2px;
  opacity: 0.85;
}

#rules-master-checkbox-wrapper.checkbox-enabled .checkbox-master-label::after {
  content: ' ✓';
  font-size: 0.9em;
  margin-left: 4px;
  color: var(--clr-success);
  font-weight: 700;
  opacity: 0;
  transition: opacity 0.3s ease 0.2s;
}

#rules-master-checkbox-wrapper.checkbox-enabled .checkbox-master-label.has-ticked::after {
  opacity: 1;
}

#rules-master-checkbox-wrapper.checkbox-locked input[type="checkbox"]:checked + .checkbox-custom,
#rules-master-checkbox-wrapper.checkbox-locked input[type="checkbox"]:checked + .checkbox-custom::after {
  background: rgba(148, 163, 184, 0.12);
  border-color: rgba(148, 163, 184, 0.35);
  transform: rotate(-45deg) scale(0);
  box-shadow: none;
}

.rules-error {
  text-align: center;
  font-size: 0.9rem;
  color: var(--clr-error);
  margin-bottom: 0.75rem;
  display: none;
}

.rules-error.visible {
  display: block;
}

.rules-modal-actions {
  padding-top: 0.9rem;
  border-top: 1px solid var(--clr-border);
  margin-top: 0.5rem;
}

.rules-modal-actions .btn {
  width: 100%;
  min-width: 100%;
  flex: 1;
}

.rules-modal-actions .btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* Shake animation for locked / invalid actions */
.shake {
  animation: shakeAnim 0.45s cubic-bezier(0.36, 0.07, 0.19, 0.97) both;
}

@keyframes shakeAnim {
  10%, 90% { transform: translate3d(-2px, 0, 0); }
  20%, 80% { transform: translate3d(4px, 0, 0); }
  30%, 50%, 70% { transform: translate3d(-6px, 0, 0); }
  40%, 60% { transform: translate3d(6px, 0, 0); }
}

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .rules-modal-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.65rem;
  }

  .rules-header-icon {
    width: 46px;
    height: 46px;
    min-width: 46px;
  }

  .rules-scroll-container {
    max-height: 280px;
  }

  .rule-item {
    gap: 0.7rem;
    padding: 0.85rem 0.7rem;
  }

  .rule-number {
    width: 38px;
    height: 38px;
    min-width: 38px;
    font-size: 0.85rem;
  }

  .rules-modal-actions {
    flex-direction: column;
  }

  .rules-modal-actions .btn {
    width: 100%;
    min-width: 100%;
  }

  .rules-master-checkbox {
    padding: 0.7rem 0.8rem;
  }

  .checkbox-master-label {
    font-size: 0.9rem;
  }
}