/* ============================================================================
   KFF Rewards Module — tier ladder + video modal
   Scoped under .kff-rewards-* prefix to avoid collisions with main site.
   ============================================================================ */

:root {
  --kffr-bg: #141422;
  --kffr-card: rgba(20, 20, 34, 0.95);
  --kffr-border: #2a2a3a;
  --kffr-text: #e6e6ff;
  --kffr-muted: #b3b3cc;
  --kffr-gold: #ffd700;
  --kffr-gold-deep: #ff9500;
  --kffr-green: #2ecc71;
  --kffr-purple: #6c5ce7;
  --kffr-locked: #5a5a72;
}

/* ----- Tier ladder panel ----- */

.kffr-ladder {
  background: var(--kffr-card);
  border: 1px solid var(--kffr-border);
  border-radius: 16px;
  padding: 1.2rem;
  max-width: 580px;
  margin: 0.6rem auto 1.4rem;
  font-size: 0.94rem;
}

.kffr-ladder-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 0.7rem;
}

.kffr-ladder-title {
  font-size: 1.05rem; font-weight: 800; color: #fff;
  letter-spacing: 0.02em;
}

.kffr-ladder-progress {
  font-size: 0.85rem; color: var(--kffr-muted);
}

.kffr-ladder-progress strong { color: #fff; }

.kffr-tier {
  display: grid;
  grid-template-columns: 28px 1fr auto;
  align-items: center;
  gap: 0.7rem;
  padding: 0.55rem 0;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.kffr-tier:first-of-type { border-top: none; }

.kffr-tier-icon { font-size: 1.05rem; text-align: center; }

.kffr-tier-label {
  font-size: 0.92rem; color: var(--kffr-text); line-height: 1.3;
}

.kffr-tier-label .kffr-tier-meta {
  display: block; font-size: 0.78rem; color: var(--kffr-muted); margin-top: 0.1rem;
}

.kffr-tier-action button,
.kffr-tier-action a {
  background: var(--kffr-purple); color: #fff; border: none;
  padding: 0.45rem 0.9rem; border-radius: 999px; cursor: pointer;
  font-weight: 700; font-size: 0.85rem; text-decoration: none;
  display: inline-block; transition: 0.2s; white-space: nowrap;
}

.kffr-tier-action button:hover,
.kffr-tier-action a:hover { transform: translateY(-1px); }

.kffr-tier.locked .kffr-tier-icon { color: var(--kffr-locked); }
.kffr-tier.locked .kffr-tier-label { color: var(--kffr-muted); }
.kffr-tier.locked .kffr-tier-action {
  font-size: 0.78rem; color: var(--kffr-muted);
}

.kffr-tier.unlocked .kffr-tier-action button {
  background: linear-gradient(90deg, var(--kffr-gold), var(--kffr-gold-deep));
  color: #1a0f25;
  animation: kffr-pulse 2.4s ease-in-out infinite;
}

.kffr-tier.claimed .kffr-tier-icon { color: var(--kffr-green); }
.kffr-tier.claimed .kffr-tier-action button {
  background: rgba(46, 204, 113, 0.15); color: #fff;
  border: 1px solid rgba(46, 204, 113, 0.4);
  animation: none;
}

.kffr-tier.grand .kffr-tier-icon { color: var(--kffr-gold); }
.kffr-tier.grand .kffr-tier-label { color: #fff; font-weight: 700; }
.kffr-tier.grand.unlocked .kffr-tier-action a {
  background: linear-gradient(90deg, var(--kffr-gold), var(--kffr-gold-deep));
  color: #1a0f25;
  animation: kffr-pulse 2.4s ease-in-out infinite;
}

@keyframes kffr-pulse {
  0%, 100% { box-shadow: 0 0 0 rgba(255, 215, 0, 0); }
  50%      { box-shadow: 0 0 16px rgba(255, 215, 0, 0.65); }
}

.kffr-progress-bar {
  height: 5px; background: #1f1f30; border-radius: 999px; overflow: hidden;
  margin: 0.5rem 0 0.4rem;
}
.kffr-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--kffr-gold), var(--kffr-gold-deep));
  width: 0%; transition: width 0.4s ease;
}

.kffr-history-note {
  margin-top: 0.6rem; padding-top: 0.6rem;
  border-top: 1px solid rgba(255,255,255,0.06);
  font-size: 0.78rem; color: var(--kffr-muted); text-align: center;
}

/* ----- Returning-visitor banner ----- */

.kffr-welcome-back {
  background: linear-gradient(90deg, var(--kffr-purple), #8b7ff5);
  color: #fff; padding: 0.75rem 1rem; border-radius: 10px;
  margin-bottom: 0.8rem; font-size: 0.92rem; line-height: 1.4;
  text-align: center;
}
.kffr-welcome-back strong { font-weight: 800; }
.kffr-welcome-back button {
  background: transparent; border: 1px solid rgba(255,255,255,0.3); color: #fff;
  padding: 0.2rem 0.6rem; border-radius: 999px; cursor: pointer;
  font-size: 0.78rem; margin-left: 0.5rem;
}
.kffr-welcome-back button:hover { background: rgba(255,255,255,0.15); }

/* ----- Reward video modal ----- */

.kffr-modal-overlay {
  position: fixed; inset: 0;
  background: rgba(5, 5, 15, 0.95);
  backdrop-filter: blur(8px);
  z-index: 1500;
  display: flex; align-items: center; justify-content: center;
  padding: 1rem;
  animation: kffr-fade 0.25s ease;
}

@keyframes kffr-fade { from { opacity: 0; } to { opacity: 1; } }

.kffr-modal {
  background: var(--kffr-card);
  border: 1px solid var(--kffr-gold);
  border-radius: 18px;
  padding: 1.4rem;
  max-width: 720px; width: 100%;
  box-shadow: 0 20px 60px rgba(255, 153, 0, 0.4);
  position: relative;
}

.kffr-modal-celebration {
  text-align: center; margin-bottom: 0.9rem;
}
.kffr-modal-celebration h2 {
  font-size: 1.4rem; font-weight: 900; color: var(--kffr-gold);
  letter-spacing: 0.02em;
}
.kffr-modal-celebration .kffr-modal-sub {
  font-size: 0.95rem; color: var(--kffr-muted); margin-top: 0.2rem;
}

.kffr-video-frame {
  position: relative;
  background: #000;
  border-radius: 12px; overflow: hidden;
  aspect-ratio: 16 / 9;
}

.kffr-video-frame video {
  width: 100%; height: 100%; object-fit: contain;
  background: #000;
}

.kffr-video-loading {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  color: var(--kffr-muted); font-size: 0.95rem;
}

.kffr-watermark {
  position: absolute;
  bottom: 8px; right: 12px;
  font-size: 0.7rem; color: rgba(255,255,255,0.55);
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  text-shadow: 0 1px 2px rgba(0,0,0,0.8);
  pointer-events: none;
  user-select: none;
  z-index: 2;
}

.kffr-modal-progressbar {
  height: 4px; background: rgba(255,255,255,0.08);
  border-radius: 999px; overflow: hidden;
  margin-top: 0.7rem;
}
.kffr-modal-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--kffr-gold), var(--kffr-gold-deep));
  width: 0%; transition: width 0.15s linear;
}

.kffr-modal-actions {
  display: flex; justify-content: center; gap: 0.6rem;
  margin-top: 1rem; flex-wrap: wrap;
}

.kffr-modal-actions button {
  background: rgba(255,255,255,0.08);
  color: var(--kffr-text);
  border: 1px solid rgba(255,255,255,0.15);
  padding: 0.55rem 1.1rem; border-radius: 999px;
  font-weight: 600; font-size: 0.9rem; cursor: pointer;
  transition: 0.2s;
}
.kffr-modal-actions button:hover {
  background: rgba(255,255,255,0.15); border-color: rgba(255,255,255,0.3);
}
.kffr-modal-actions button:disabled {
  opacity: 0.4; cursor: not-allowed;
}
.kffr-modal-actions button.primary {
  background: linear-gradient(90deg, var(--kffr-gold), var(--kffr-gold-deep));
  color: #1a0f25; border: none; font-weight: 800;
}
.kffr-modal-actions button.primary:hover { transform: translateY(-1px); }

.kffr-modal-error {
  background: rgba(255, 51, 102, 0.12);
  border: 1px solid rgba(255, 51, 102, 0.4);
  color: #ff8aa3;
  padding: 0.8rem 1rem; border-radius: 10px;
  font-size: 0.92rem;
  margin-top: 0.8rem;
}

.kffr-modal-exhausted {
  text-align: center; padding: 2rem 1rem;
  color: var(--kffr-muted); font-size: 1rem;
}
.kffr-modal-exhausted h3 { color: var(--kffr-text); margin-bottom: 0.4rem; }

/* ----- Mobile tweaks ----- */
@media (max-width: 600px) {
  .kffr-ladder { padding: 1rem 0.9rem; max-width: calc(100vw - 1.5rem); }
  .kffr-tier-action button { font-size: 0.8rem; padding: 0.4rem 0.75rem; }
  .kffr-modal { padding: 1rem; }
  .kffr-modal-celebration h2 { font-size: 1.15rem; }
  .kffr-modal-actions button { padding: 0.5rem 0.85rem; font-size: 0.85rem; }
}