/* =========================================================
   MKS DIGITAL SAT RW - FRONTEND STYLE v1.3
   Brand color: #8222ee
========================================================= */

:root {
  --mks-sat-primary: #8222ee;
  --mks-sat-primary-dark: #6417c9;
  --mks-sat-primary-mid: #a676ff;
  --mks-sat-primary-soft: #f5efff;
  --mks-sat-lavender: #fbf8ff;
  --mks-sat-sky: #f4f9ff;
  --mks-sat-mint: #f6fffb;
  --mks-sat-cream: #fffdf7;
  --mks-sat-ink: #20162f;
  --mks-sat-text: #443b52;
  --mks-sat-muted: #756983;
  --mks-sat-border: #eadff8;
  --mks-sat-border-soft: #f1e9fb;
  --mks-sat-bg: #ffffff;
  --mks-sat-soft-bg: #fcf9ff;
  --mks-sat-green: #128a42;
  --mks-sat-red: #d93025;
  --mks-sat-yellow: #b26a00;
  --mks-sat-radius: 18px;
  --mks-sat-shadow: 0 12px 32px rgba(84, 35, 150, 0.09);
  --mks-sat-shadow-soft: 0 8px 22px rgba(84, 35, 150, 0.055);
}

.mks-sat-rw-lesson,
.mks-sat-rw-lesson *,
.mks-sat-rw-analytics,
.mks-sat-rw-analytics *,
.mks-sat-timer,
.mks-sat-timer * {
  box-sizing: border-box;
}

.mks-sat-rw-lesson,
.mks-sat-rw-analytics {
  font-family: Inter, Poppins, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--mks-sat-text);
  line-height: 1.65;
  max-width: 1120px;
  margin: 0 auto;
}

.mks-sat-rw-lesson a,
.mks-sat-rw-analytics a {
  color: var(--mks-sat-primary);
  text-decoration: none;
}

.mks-sat-rw-lesson h1,
.mks-sat-rw-lesson h2,
.mks-sat-rw-lesson h3,
.mks-sat-rw-lesson h4,
.mks-sat-rw-analytics h2 {
  color: var(--mks-sat-ink);
  line-height: 1.18;
  margin: 0 0 14px;
  font-weight: 800;
}

.mks-sat-rw-lesson p,
.mks-sat-rw-analytics p {
  margin: 0 0 14px;
}

.mks-sat-rw-lesson ul,
.mks-sat-rw-lesson ol {
  margin: 12px 0 0 22px;
  padding: 0;
}

.mks-sat-rw-lesson li {
  margin: 8px 0;
}

/* Compact premium hero: dark gradient band + soft pattern */
.mks-lesson-hero,
.mks-analytics-head {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 22px;
  padding: clamp(24px, 4vw, 42px);
  margin: 0 0 18px;
  color: #ffffff;
  background:
    radial-gradient(circle at 96% 2%, rgba(255,255,255,0.18) 0 0, transparent 24%),
    radial-gradient(circle at 0% 18%, rgba(255,255,255,0.12) 0 0, transparent 18%),
    radial-gradient(circle at 22px 22px, rgba(255,255,255,0.10) 1.2px, transparent 1.8px),
    linear-gradient(125deg, #2a0559 0%, #6f1fe4 48%, #1965e8 100%);
  background-size: auto, auto, 24px 24px, auto;
  box-shadow: 0 18px 44px rgba(47, 16, 110, 0.22);
}

.mks-lesson-hero::before,
.mks-analytics-head::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(255,255,255,0.10), transparent 42%, rgba(255,255,255,0.08)),
    repeating-linear-gradient(135deg, rgba(255,255,255,0.055) 0 1px, transparent 1px 13px);
  pointer-events: none;
}

.mks-lesson-hero::after,
.mks-analytics-head::after {
  content: "";
  position: absolute;
  right: -56px;
  top: -76px;
  width: 260px;
  height: 260px;
  border-radius: 48%;
  background: rgba(255,255,255,0.10);
  pointer-events: none;
}

.mks-lesson-hero > *,
.mks-analytics-head > * {
  position: relative;
  z-index: 1;
}

.mks-lesson-hero h1,
.mks-analytics-head h2 {
  color: #ffffff;
  font-size: clamp(30px, 5vw, 58px);
  line-height: 1.05;
  letter-spacing: 0.035em;
  margin-bottom: 14px;
  max-width: 820px;
}

.mks-lesson-hero p,
.mks-analytics-head p {
  font-size: clamp(16px, 2vw, 22px);
  line-height: 1.72;
  max-width: 840px;
  color: rgba(255,255,255,0.88);
  margin-bottom: 18px;
}

.mks-badge,
.mks-topic-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  max-width: 100%;
  padding: 9px 16px;
  border-radius: 999px;
  color: #ffffff;
  background: rgba(255,255,255,0.14);
  border: 1px solid rgba(255,255,255,0.16);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.14);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.mks-hero-pills,
.mks-hero-hooks {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.mks-hero-pill,
.mks-hook-pill,
.mks-lesson-hero .mks-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 10px 16px;
  border-radius: 10px;
  color: #5d16ba;
  background: linear-gradient(135deg, rgba(255,255,255,0.98) 0%, rgba(250,246,255,0.96) 100%);
  border: 1px solid rgba(255,255,255,0.35);
  box-shadow: 0 10px 24px rgba(31, 8, 76, 0.16);
  font-weight: 850;
  font-size: 14px;
  line-height: 1.15;
}

.mks-card,
.mks-example,
.mks-sat-question,
.mks-note,
.mks-shortcut-box,
.mks-trap-box {
  border: 1px solid var(--mks-sat-border);
  border-radius: var(--mks-sat-radius);
  background: linear-gradient(145deg, #ffffff 0%, #fffdff 48%, #fbf8ff 100%);
  padding: 24px;
  margin: 18px 0;
  box-shadow: var(--mks-sat-shadow-soft);
}

.mks-card h2 {
  font-size: 24px;
}

.mks-card h3,
.mks-example h3,
.mks-sat-question h3 {
  font-size: 20px;
}

.mks-note {
  background: linear-gradient(135deg, #fffdf7 0%, #fff8e7 100%);
  border-color: #f3e1af;
}

.mks-shortcut-box {
  background: linear-gradient(135deg, #f7fff9 0%, #eefcf4 100%);
  border-color: #cfeedd;
}

.mks-trap-box {
  background: linear-gradient(135deg, #fff8f8 0%, #fff1f1 100%);
  border-color: #f3d0cd;
}

.mks-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.mks-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.mks-mini-card {
  border: 1px solid var(--mks-sat-border);
  border-radius: 16px;
  padding: 18px;
  background: linear-gradient(145deg, #ffffff 0%, var(--mks-sat-soft-bg) 100%);
}

.mks-mini-card strong {
  color: var(--mks-sat-primary-dark);
}

.mks-passage,
.mks-student-notes {
  border-left: 5px solid var(--mks-sat-primary);
  background: linear-gradient(135deg, #ffffff 0%, #fbf8ff 55%, #f7f2ff 100%);
  padding: 18px 20px;
  border-radius: 14px;
  margin: 16px 0;
  color: var(--mks-sat-ink);
}

.mks-student-notes ul {
  margin-top: 0;
}

.mks-question-stem {
  font-weight: 750;
  color: var(--mks-sat-ink);
  margin: 16px 0;
}

.mks-options {
  display: grid;
  gap: 10px;
  margin: 16px 0;
}

.mks-option {
  appearance: none;
  width: 100%;
  text-align: left;
  cursor: pointer;
  border: 1px solid var(--mks-sat-border);
  border-radius: 14px;
  padding: 13px 15px;
  background: linear-gradient(135deg, #ffffff 0%, #fdfbff 100%);
  color: var(--mks-sat-text);
  font: inherit;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease, box-shadow 0.18s ease;
}

.mks-option:hover {
  transform: translateY(-1px);
  border-color: rgba(130, 34, 238, 0.55);
  box-shadow: 0 8px 20px rgba(130, 34, 238, 0.08);
}

.mks-option.is-selected {
  border-color: var(--mks-sat-primary);
  background: linear-gradient(135deg, #ffffff 0%, #f2eaff 100%);
}

.mks-option.is-correct {
  border-color: var(--mks-sat-green);
  background: #f0fff5;
}

.mks-option.is-wrong {
  border-color: var(--mks-sat-red);
  background: #fff4f3;
}

.mks-option-label {
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  margin-right: 8px;
  background: var(--mks-sat-primary-soft);
  color: var(--mks-sat-primary-dark);
  font-weight: 800;
}

.mks-answer,
.mks-explanation {
  display: none;
  margin-top: 14px;
  padding: 16px;
  border-radius: 14px;
  background: #f8fff9;
  border: 1px solid #cbeed5;
}

.mks-answer.is-open,
.mks-explanation.is-open,
.mks-sat-question.is-answered .mks-answer,
.mks-sat-question.is-answered .mks-explanation {
  display: block;
}

.mks-answer strong,
.mks-explanation strong {
  color: var(--mks-sat-green);
}

.mks-feedback {
  display: none;
  margin-top: 10px;
  font-weight: 800;
}

.mks-feedback.is-visible {
  display: block;
}

.mks-feedback.is-correct {
  color: var(--mks-sat-green);
}

.mks-feedback.is-wrong {
  color: var(--mks-sat-red);
}

.mks-answer-toggle,
.mks-check-answer,
.mks-complete-unit,
.mks-timer-start,
.mks-timer-reset,
.mks-nav-btn {
  appearance: none;
  cursor: pointer;
  border: 0;
  border-radius: 999px;
  padding: 12px 18px;
  color: var(--mks-sat-primary-dark);
  background: linear-gradient(135deg, #ffffff 0%, #faf6ff 45%, #efe4ff 100%);
  border: 1px solid rgba(130, 34, 238, 0.18);
  font-weight: 800;
  font-size: 14px;
  transition: transform 0.18s ease, box-shadow 0.18s ease, opacity 0.18s ease, background 0.18s ease;
  box-shadow: 0 8px 18px rgba(130, 34, 238, 0.12);
}

.mks-answer-toggle:hover,
.mks-check-answer:hover,
.mks-complete-unit:hover,
.mks-timer-start:hover,
.mks-timer-reset:hover,
.mks-nav-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 24px rgba(130, 34, 238, 0.18);
}

.mks-answer-toggle.is-open,
.mks-timer-reset {
  color: var(--mks-sat-primary-dark);
  background: linear-gradient(135deg, #f7f1ff 0%, #ffffff 100%);
  box-shadow: none;
}

.mks-complete-unit.is-completed {
  color: #0f6d36;
  border-color: rgba(18, 138, 66, 0.22);
  background: linear-gradient(135deg, #ffffff 0%, #effff5 100%);
}

.mks-sat-timer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  border: 1px solid var(--mks-sat-border);
  border-radius: 18px;
  padding: 16px;
  margin: 18px 0;
  background: linear-gradient(145deg, #ffffff 0%, var(--mks-sat-soft-bg) 100%);
  box-shadow: 0 10px 30px rgba(67, 26, 130, 0.06);
}

.mks-timer-title {
  display: block;
  color: var(--mks-sat-muted);
  font-size: 13px;
  font-weight: 750;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.mks-timer-display {
  color: var(--mks-sat-ink);
  font-size: 30px;
  letter-spacing: -0.03em;
}

.mks-sat-timer.is-warning .mks-timer-display {
  color: var(--mks-sat-yellow);
}

.mks-sat-timer.is-ended .mks-timer-display {
  color: var(--mks-sat-red);
}

.mks-progress-bar {
  width: 100%;
  height: 12px;
  border-radius: 999px;
  overflow: hidden;
  background: var(--mks-sat-primary-soft);
  margin: 14px 0;
}

.mks-progress-fill {
  display: block;
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #c39cff, var(--mks-sat-primary));
  transition: width 0.35s ease;
}

.mks-analytics-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.mks-stat-card {
  border: 1px solid var(--mks-sat-border);
  border-radius: 18px;
  padding: 18px;
  background: linear-gradient(145deg, #ffffff 0%, #fbf8ff 100%);
  box-shadow: var(--mks-sat-shadow-soft);
}

.mks-stat-card strong {
  display: block;
  color: var(--mks-sat-primary-dark);
  font-size: 32px;
  line-height: 1;
  letter-spacing: -0.04em;
  margin-bottom: 8px;
}

.mks-stat-card span {
  color: var(--mks-sat-muted);
  font-weight: 700;
  font-size: 13px;
}

.mks-analytics-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--mks-sat-border);
  border-radius: 18px;
  background: linear-gradient(145deg, #ffffff 0%, #fbf8ff 100%);
}

.mks-analytics-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 520px;
}

.mks-analytics-table th,
.mks-analytics-table td {
  text-align: left;
  padding: 14px 16px;
  border-bottom: 1px solid var(--mks-sat-border);
}

.mks-analytics-table th {
  color: var(--mks-sat-ink);
  background: linear-gradient(145deg, #ffffff 0%, var(--mks-sat-soft-bg) 100%);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.mks-analytics-table tr:last-child td {
  border-bottom: 0;
}

.mks-status-pill {
  display: inline-flex;
  align-items: center;
  padding: 5px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
  color: var(--mks-sat-primary-dark);
  background: var(--mks-sat-primary-soft);
}

.mks-status-pill.is-done {
  color: var(--mks-sat-green);
  background: #effff5;
}

.mks-lesson-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin: 24px 0;
  padding: 20px;
  border-radius: 18px;
  background: linear-gradient(135deg, #ffffff 0%, #fbf8ff 100%);
  border: 1px solid var(--mks-sat-border);
}

@media (max-width: 900px) {
  .mks-grid-2,
  .mks-grid-3,
  .mks-analytics-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 760px) {
  .mks-lesson-hero,
  .mks-analytics-head {
    padding: 22px 18px;
    border-radius: 18px;
  }

  .mks-lesson-hero h1,
  .mks-analytics-head h2 {
    letter-spacing: 0.015em;
  }

  .mks-hero-pill,
  .mks-hook-pill,
  .mks-lesson-hero .mks-pill {
    width: 100%;
    justify-content: flex-start;
  }
}

@media (max-width: 640px) {
  .mks-lesson-hero,
  .mks-analytics-head,
  .mks-card,
  .mks-example,
  .mks-sat-question,
  .mks-note,
  .mks-shortcut-box,
  .mks-trap-box {
    padding: 18px;
    border-radius: 16px;
  }

  .mks-grid-2,
  .mks-grid-3,
  .mks-analytics-grid {
    grid-template-columns: 1fr;
  }

  .mks-sat-timer,
  .mks-lesson-footer {
    align-items: stretch;
    flex-direction: column;
  }

  .mks-timer-start,
  .mks-timer-reset,
  .mks-complete-unit,
  .mks-answer-toggle {
    width: 100%;
  }
}


/* =========================================================
   v1.3 FIX: SAT practice test alignment + neutral answer buttons
   Supports both old HTML (.mks-question + raw button) and new HTML
   (.mks-sat-question + .mks-option)
========================================================= */
.mks-question,
.mks-sat-question {
  border: 1px solid var(--mks-sat-border);
  border-radius: 18px;
  background: linear-gradient(145deg, #ffffff 0%, #fffdff 52%, #fbf8ff 100%);
  padding: clamp(18px, 3vw, 26px);
  margin: 20px 0;
  box-shadow: 0 10px 28px rgba(84, 35, 150, 0.06);
}

.mks-question > p:first-child,
.mks-sat-question > p:first-child {
  margin-top: 0;
}

.mks-question .mks-options,
.mks-sat-question .mks-options {
  display: grid !important;
  grid-template-columns: 1fr !important;
  gap: 10px !important;
  margin: 16px 0 8px !important;
  padding: 0 !important;
}

.mks-options button,
.mks-options .mks-option {
  appearance: none !important;
  -webkit-appearance: none !important;
  width: 100% !important;
  min-height: 50px !important;
  display: flex !important;
  align-items: center !important;
  justify-content: flex-start !important;
  text-align: left !important;
  cursor: pointer !important;
  border: 1px solid rgba(130, 34, 238, 0.18) !important;
  border-radius: 14px !important;
  padding: 13px 16px !important;
  background: linear-gradient(135deg, #ffffff 0%, #fcfaff 100%) !important;
  color: var(--mks-sat-text) !important;
  font: inherit !important;
  font-weight: 650 !important;
  letter-spacing: 0 !important;
  line-height: 1.45 !important;
  box-shadow: 0 6px 16px rgba(130, 34, 238, 0.045) !important;
  white-space: normal !important;
  transition: transform 0.16s ease, border-color 0.16s ease, background 0.16s ease, box-shadow 0.16s ease !important;
}

.mks-options button:hover,
.mks-options .mks-option:hover {
  transform: translateY(-1px) !important;
  border-color: rgba(130, 34, 238, 0.45) !important;
  background: linear-gradient(135deg, #ffffff 0%, #f7f0ff 100%) !important;
  box-shadow: 0 10px 22px rgba(130, 34, 238, 0.10) !important;
}

.mks-options button.is-selected,
.mks-options .mks-option.is-selected {
  border-color: var(--mks-sat-primary) !important;
  background: linear-gradient(135deg, #ffffff 0%, #f1e6ff 100%) !important;
}

.mks-options button.is-correct,
.mks-options .mks-option.is-correct {
  border-color: rgba(18, 138, 66, 0.55) !important;
  background: linear-gradient(135deg, #f8fff9 0%, #eafff1 100%) !important;
  color: #0f6d36 !important;
}

.mks-options button.is-wrong,
.mks-options .mks-option.is-wrong {
  border-color: rgba(217, 48, 37, 0.42) !important;
  background: linear-gradient(135deg, #fffafa 0%, #fff0ef 100%) !important;
  color: #9f231d !important;
}

.mks-question.is-answered .mks-answer,
.mks-question.is-answered .mks-explanation,
.mks-sat-question.is-answered .mks-answer,
.mks-sat-question.is-answered .mks-explanation {
  display: block;
}

.mks-practice-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.mks-practice-header .mks-sat-timer {
  flex: 1 1 380px;
  margin: 0;
}

.mks-sat-timer {
  min-height: 86px;
}

.mks-unit-actions .mks-sat-timer {
  margin-bottom: 18px;
}

@media (max-width: 640px) {
  .mks-options button,
  .mks-options .mks-option {
    min-height: 48px !important;
    padding: 12px 14px !important;
    font-size: 15px !important;
  }

  .mks-practice-header {
    display: block;
  }
}