/* =================================================================
   Habla — REVIEW module
   ================================================================= */

.review-empty, .review-intro, .review-summary {
  max-width: 56ch;
  padding: clamp(24px, 3vh, 36px);
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  background: var(--navy-2);
}
.review-empty h3, .review-intro h3, .review-summary h3 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-variation-settings: 'opsz' 96, 'wght' 700, 'WONK' 35;
  font-size: clamp(22px, 2vw + 6px, 30px);
  letter-spacing: -0.02em;
  color: var(--nieve);
}
.review-empty p, .review-intro p, .review-summary p {
  margin: 0 0 20px;
  color: var(--nieve-2);
}

.review-summary-ctas {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.cta-ghost {
  background: transparent;
  color: var(--paper);
  border: 1px solid var(--paper);
}
.cta-ghost:hover, .cta-ghost:focus-visible {
  background: var(--paper);
  color: var(--navy);
}

/* ============ Session ============ */

.review-session {
  max-width: 680px;
  margin: 0 auto;
}
.review-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  color: var(--carbon-3);
  padding-bottom: clamp(12px, 2vh, 18px);
  border-bottom: 1px solid var(--rule);
  margin-bottom: clamp(24px, 4vh, 40px);
}
.review-progress { color: var(--carbon-2); }
.review-progress .slash { color: var(--carbon-4); }
.review-timer { color: var(--rojo); }

.flashcard {
  position: relative;
  padding: clamp(32px, 5vh, 56px);
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(ellipse at 50% 0%, rgba(200, 16, 46, 0.12), transparent 55%),
    var(--navy-2);
  text-align: center;
  min-height: clamp(260px, 40vh, 380px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: clamp(16px, 2vh, 24px);
}
.flashcard-slug {
  position: absolute;
  top: clamp(16px, 2vh, 20px);
  left: clamp(16px, 2vw, 24px);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--amber);
}
.flashcard-prompt {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(28px, 3vw + 12px, 48px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--paper);
}
.flashcard-answer {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: clamp(18px, 0.8vw + 12px, 22px);
  color: var(--paper-2);
  line-height: 1.5;
}
.flashcard-replay, .flashcard-reveal {
  align-self: center;
  padding: 10px 18px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--paper-2);
  background: transparent;
  transition: border-color 180ms ease, color 180ms ease, background 180ms ease;
}
.flashcard-replay:hover, .flashcard-reveal:hover {
  color: var(--paper);
  border-color: var(--paper-2);
}
.flashcard-reveal:disabled {
  color: var(--paper-3);
  border-color: var(--paper-4);
  cursor: default;
}

/* ============ Rating ============ */

.review-rating {
  margin-top: clamp(20px, 3vh, 28px);
}
.rating-label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--paper-3);
  text-align: center;
}
.rating-buttons {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}
.rating-buttons button {
  padding: 14px 8px;
  border: 1px solid var(--rule);
  border-radius: var(--radius-md);
  background: var(--navy-2);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 600;
  transition: border-color 180ms ease, background 180ms ease, color 180ms ease, transform 160ms ease;
}
.rating-buttons button[data-rating="1"]:hover { border-color: var(--rojo); color: var(--rojo); }
.rating-buttons button[data-rating="2"]:hover { border-color: var(--rojo-hot); color: var(--rojo-hot); }
.rating-buttons button[data-rating="3"]:hover { border-color: var(--cielo);  color: var(--cielo);  }
.rating-buttons button[data-rating="4"]:hover { border-color: var(--cielo-hot); color: var(--cielo-hot); }
.rating-buttons button:hover { transform: translateY(-1px); }
.rating-buttons button:focus-visible { outline: 2px solid var(--rojo); outline-offset: 2px; }

@media (max-width: 480px) {
  .rating-buttons { grid-template-columns: repeat(2, 1fr); }
}