/**
 * English Challenges Plugin — ecp-public.css
 * Scoped plugin styles. Works standalone (no theme) or with the EC theme.
 */

/* ── Variables (fallback if theme not active) ─── */
:root {
  --ec-bg:          #1B1B1D;
  --ec-surface:     #242426;
  --ec-surface2:    #2D2D30;
  --ec-border:      rgba(255,255,255,0.08);
  --ec-border2:     rgba(255,255,255,0.14);
  --ec-text:        #F3F3F0;
  --ec-muted:       rgba(243,243,240,0.55);
  --ec-faint:       rgba(243,243,240,0.25);
  --ec-orange:      #F58220;
  --ec-orange-dim:  rgba(245,130,32,0.15);
  --ec-orange-dim2: rgba(245,130,32,0.25);
  --ec-green:       #4CAF7D;
  --ec-green-dim:   rgba(76,175,125,0.15);
  --ec-blue:        #5B9CF6;
  --ec-blue-dim:    rgba(91,156,246,0.15);
  --ec-purple:      #A78BFA;
  --ec-purple-dim:  rgba(167,139,250,0.15);
  --ec-red:         #F87171;
  --ec-red-dim:     rgba(248,113,113,0.15);
  --font-main:      'Syne', sans-serif;
  --font-mono:      'DM Mono', monospace;
  --radius-sm:      6px;
  --radius-md:      10px;
  --radius-lg:      14px;
}

/* ── Challenge wrap ───────────────────────────── */
.ec-challenges-wrap { width: 100%; }

/* ── Filter bar ───────────────────────────────── */
.ec-filters {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--ec-border);
}

.ec-filter-btn {
  background: var(--ec-surface);
  border: 1px solid var(--ec-border);
  color: var(--ec-muted);
  font-family: var(--font-main);
  font-size: 12px;
  font-weight: 600;
  padding: 7px 16px;
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.15s;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.ec-filter-btn:hover { border-color: var(--ec-border2); color: var(--ec-text); }

.ec-filter-btn.active[data-filter="all"],
.ec-filter-btn.active[data-filter="speaking"] { background: var(--ec-orange); color: #1B1B1D; border-color: var(--ec-orange); }
.ec-filter-btn.active[data-filter="grammar"]  { background: var(--ec-blue);   color: #fff;    border-color: var(--ec-blue); }
.ec-filter-btn.active[data-filter="words"]    { background: var(--ec-green);  color: #fff;    border-color: var(--ec-green); }
.ec-filter-btn.active[data-filter="slang"]    { background: var(--ec-purple); color: #fff;    border-color: var(--ec-purple); }
.ec-filter-btn.active[data-filter="daily"]    { background: var(--ec-blue);   color: #fff;    border-color: var(--ec-blue); }

/* ── Challenge grid / list ───────────────────── */
.ec-challenge-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.ec-chal-card {
  background: var(--ec-surface);
  border: 1px solid var(--ec-border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: var(--ec-text);
  transition: all 0.15s;
}

.ec-chal-card:hover {
  border-color: var(--ec-border2);
  background: var(--ec-surface2);
}

.ec-chal-card.is-completed { border-left: 3px solid var(--ec-green); }

.ec-chal-card__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  flex-shrink: 0;
}

.ec-chal-card[data-cat="speaking"] .ec-chal-card__dot { background: var(--ec-orange); }
.ec-chal-card[data-cat="grammar"]  .ec-chal-card__dot { background: var(--ec-blue); }
.ec-chal-card[data-cat="words"]    .ec-chal-card__dot { background: var(--ec-green); }
.ec-chal-card[data-cat="slang"]    .ec-chal-card__dot { background: var(--ec-purple); }

.ec-chal-card__info { flex: 1; min-width: 0; }

.ec-chal-card__title {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--ec-text);
}

.ec-chal-card__meta {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.ec-chal-card__cat {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ec-muted);
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

.ec-chal-card__arrow {
  color: var(--ec-faint);
  font-size: 18px;
  flex-shrink: 0;
}

.ec-chal-card.is-completed .ec-chal-card__arrow { color: var(--ec-green); }

/* ── Detail layout ────────────────────────────── */
.ec-detail-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 24px;
  align-items: start;
}

@media (max-width: 900px) {
  .ec-detail-layout { grid-template-columns: 1fr; }
  .ec-detail-sidebar { position: static !important; }
}

/* ── Badges ───────────────────────────────────── */
.ec-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  padding: 3px 9px;
  border-radius: 20px;
}

.ec-badge--orange  { background: var(--ec-orange-dim);  color: var(--ec-orange); }
.ec-badge--blue    { background: var(--ec-blue-dim);    color: var(--ec-blue); }
.ec-badge--green   { background: var(--ec-green-dim);   color: var(--ec-green); }
.ec-badge--purple  { background: var(--ec-purple-dim);  color: var(--ec-purple); }
.ec-badge--muted   { background: var(--ec-surface2);    color: var(--ec-muted); }

.ec-diff--beginner     { background: var(--ec-green-dim);  color: var(--ec-green);  font-family: var(--font-mono); font-size: 10px; padding: 3px 9px; border-radius: 20px; display: inline-block; }
.ec-diff--intermediate { background: var(--ec-orange-dim); color: var(--ec-orange); font-family: var(--font-mono); font-size: 10px; padding: 3px 9px; border-radius: 20px; display: inline-block; }
.ec-diff--advanced     { background: var(--ec-red-dim);    color: var(--ec-red);    font-family: var(--font-mono); font-size: 10px; padding: 3px 9px; border-radius: 20px; display: inline-block; }

/* ── Boxes ────────────────────────────────────── */
.ec-scenario-box {
  background: var(--ec-surface2);
  border-left: 3px solid var(--ec-orange);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 16px 18px;
  margin-bottom: 16px;
}

.ec-task-box,
.ec-requirements,
.ec-model-answer,
.ec-recorder,
.ec-sidebar-card,
.ec-card {
  background: var(--ec-surface);
  border: 1px solid var(--ec-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 16px;
}

.ec-bonus-box {
  background: var(--ec-orange-dim);
  border: 1px solid var(--ec-orange-dim2);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  margin-bottom: 16px;
}

.ec-box-label {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--ec-muted);
  display: block;
  margin-bottom: 10px;
}

.ec-scenario-box .ec-box-label { color: var(--ec-orange); }
.ec-bonus-box .ec-box-label    { color: var(--ec-orange); }

/* ── Requirements ─────────────────────────────── */
.ec-completion-bar {
  height: 6px;
  background: var(--ec-border);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 6px;
}

.ec-completion-fill {
  height: 100%;
  background: var(--ec-green);
  border-radius: 3px;
  transition: width 0.4s ease;
}

.ec-completion-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ec-muted);
  margin-bottom: 12px;
  display: block;
}

.ec-req-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--ec-border);
  cursor: pointer;
}

.ec-req-item:last-child { border-bottom: none; }

.ec-req-item input[type="checkbox"] {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 2px;
  accent-color: var(--ec-green);
  cursor: pointer;
}

.ec-req-item label {
  font-size: 13px;
  line-height: 1.5;
  cursor: pointer;
  color: var(--ec-text);
  transition: color 0.15s;
}

.ec-req-item.is-checked label {
  color: var(--ec-muted);
  text-decoration: line-through;
}

/* ── Recorder ─────────────────────────────────── */
.ec-recorder__label {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--ec-muted);
  display: block;
  margin-bottom: 14px;
}

.ec-recorder__controls {
  display: flex;
  align-items: center;
  gap: 14px;
}

.ec-rec-btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 2px solid var(--ec-orange);
  background: var(--ec-orange-dim);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
  flex-shrink: 0;
}

.ec-rec-btn:hover { background: var(--ec-orange); }

.ec-rec-btn.is-recording {
  background: var(--ec-red);
  border-color: var(--ec-red);
  animation: ec-pulse 1.2s infinite;
}

@keyframes ec-pulse {
  0%, 100% { transform: scale(1); }
  50%       { transform: scale(1.05); }
}

.ec-rec-btn__dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--ec-orange);
  transition: all 0.2s;
}

.ec-rec-btn.is-recording .ec-rec-btn__dot {
  border-radius: 3px;
  width: 13px;
  height: 13px;
  background: white;
}

.ec-rec-status { flex: 1; }

.ec-rec-status__text {
  font-size: 13px;
  color: var(--ec-muted);
  font-weight: 500;
  margin-bottom: 4px;
}

.ec-rec-status__text.is-active { color: var(--ec-red); }

.ec-rec-status__time {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 500;
  color: var(--ec-text);
  line-height: 1;
}

.ec-recordings-list {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ec-rec-item {
  background: var(--ec-surface2);
  border-radius: var(--radius-md);
  padding: 10px 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

/* ── Model answer ─────────────────────────────── */
.ec-model-answer__label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.ec-model-answer__locked {
  font-family: var(--font-mono);
  font-size: 10px;
  background: var(--ec-orange-dim);
  color: var(--ec-orange);
  padding: 3px 8px;
  border-radius: 4px;
}

.ec-model-answer__teacher {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: var(--ec-surface2);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
}

.ec-model-answer__avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--ec-orange);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 800;
  color: #1B1B1D;
  flex-shrink: 0;
}

.ec-model-answer__teacher-name { font-size: 13px; font-weight: 700; margin-bottom: 2px; }
.ec-model-answer__teacher-role { font-size: 11px; color: var(--ec-muted); }

.ec-model-answer__text {
  font-size: 13px;
  color: var(--ec-muted);
  line-height: 1.7;
  font-style: italic;
  border-left: 2px solid var(--ec-border2);
  padding-left: 14px;
  margin: 0;
}

.ec-model-answer__locked-msg {
  font-size: 13px;
  color: var(--ec-muted);
  text-align: center;
  padding: 20px;
  border: 1px dashed var(--ec-border2);
  border-radius: var(--radius-md);
}

/* ── Progress page ────────────────────────────── */
.ec-progress-page { padding: 0; }

.ec-profile-header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--ec-surface);
  border: 1px solid var(--ec-border);
  border-radius: var(--radius-lg);
  margin-bottom: 16px;
}

.ec-profile-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--ec-orange);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 800;
  color: #1B1B1D;
  flex-shrink: 0;
}

.ec-profile-name { font-size: 18px; font-weight: 800; margin-bottom: 6px; color: var(--ec-text); }

.ec-streak-box {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: var(--ec-orange-dim);
  border: 1px solid var(--ec-orange-dim2);
  border-radius: var(--radius-lg);
  margin-bottom: 16px;
}

.ec-streak-num {
  font-family: var(--font-mono);
  font-size: 36px;
  font-weight: 500;
  color: var(--ec-orange);
  line-height: 1;
}

.ec-streak-label { font-size: 14px; font-weight: 700; color: var(--ec-text); margin-bottom: 3px; }
.ec-streak-sub   { font-size: 12px; color: var(--ec-muted); }

.ec-progress-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 20px;
}

@media (max-width: 600px) {
  .ec-progress-grid { grid-template-columns: repeat(2, 1fr); }
}

.ec-prog-card {
  background: var(--ec-surface);
  border: 1px solid var(--ec-border);
  border-radius: var(--radius-md);
  padding: 14px 8px;
  text-align: center;
}

.ec-prog-card__num {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 500;
  line-height: 1;
  margin-bottom: 5px;
}

.ec-prog-card__label {
  font-size: 10px;
  color: var(--ec-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.ec-cat-prog-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.ec-cat-prog-label {
  font-size: 12px;
  font-weight: 600;
  width: 76px;
  flex-shrink: 0;
}

.ec-cat-prog-bar {
  flex: 1;
  height: 6px;
  background: var(--ec-border);
  border-radius: 3px;
  overflow: hidden;
}

.ec-cat-prog-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.5s ease;
}

.ec-cat-prog-pct {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ec-muted);
  width: 30px;
  text-align: right;
  flex-shrink: 0;
}

.ec-history-item {
  background: var(--ec-surface);
  border: 1px solid var(--ec-border);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  margin-bottom: 10px;
  transition: border-color 0.15s, opacity 0.3s;
}

.ec-history-item:hover { border-color: var(--ec-border2); }

.ec-history-item__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  flex-wrap: wrap;
  gap: 8px;
}

.ec-history-item__title { font-size: 14px; font-weight: 700; color: var(--ec-text); }

/* ── Buttons ──────────────────────────────────── */
.ec-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-main);
  font-size: 14px;
  font-weight: 700;
  padding: 11px 24px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s;
  letter-spacing: 0.3px;
  line-height: 1;
  white-space: nowrap;
}

.ec-btn--primary { background: var(--ec-orange); color: #1B1B1D; }
.ec-btn--primary:hover { background: #ff9940; color: #1B1B1D; }

.ec-btn--ghost {
  background: var(--ec-surface);
  color: var(--ec-text);
  border: 1px solid var(--ec-border2);
}

.ec-btn--ghost:hover { border-color: var(--ec-orange); color: var(--ec-orange); }

.ec-btn--sm { font-size: 12px; padding: 7px 14px; }
.ec-btn--full { width: 100%; }

/* ── Sidebar ──────────────────────────────────── */
.ec-detail-sidebar { position: sticky; top: 80px; }

.ec-sidebar-card { margin-bottom: 14px; }

.ec-sidebar-card__title {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--ec-muted);
  display: block;
  margin-bottom: 14px;
}

.ec-sidebar-info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid var(--ec-border);
  font-size: 13px;
  color: var(--ec-text);
}

.ec-sidebar-info-row:last-child { border-bottom: none; }
.ec-sidebar-info-row__label { color: var(--ec-muted); }
.ec-sidebar-info-row__val   { font-weight: 600; }

/* ── Toast ────────────────────────────────────── */
.ec-toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--ec-green);
  color: #fff;
  font-family: var(--font-main);
  font-size: 13px;
  font-weight: 700;
  padding: 11px 24px;
  border-radius: 24px;
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  z-index: 9999;
  white-space: nowrap;
  pointer-events: none;
}

.ec-toast.is-visible { transform: translateX(-50%) translateY(0); }

/* ── Daily banner ─────────────────────────────── */
.ec-daily-banner {
  background: var(--ec-surface);
  border: 1px solid var(--ec-orange);
  border-radius: var(--radius-lg);
  padding: 24px;
  position: relative;
  overflow: hidden;
}

.ec-daily-banner__tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--ec-orange);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.ec-daily-banner__tag::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ec-orange);
  animation: ec-blink 1.5s infinite;
}

@keyframes ec-blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.3; }
}

.ec-daily-banner__title {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--ec-text);
  letter-spacing: -0.5px;
}

.ec-daily-banner__desc {
  font-size: 13px;
  color: var(--ec-muted);
  line-height: 1.6;
  margin-bottom: 16px;
}

/* ── Word of the Day Card ─────────────────────── */
.ec-wotd-card {
  background: var(--ec-surface);
  border: 1px solid var(--ec-orange);
  border-radius: var(--radius-lg);
  padding: 22px 24px;
  position: relative;
  overflow: hidden;
}

.ec-wotd-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--ec-orange);
}

.ec-wotd-card.is-completed {
  border-color: var(--ec-green);
}

.ec-wotd-card.is-completed::before {
  background: var(--ec-green);
}

.ec-wotd-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.ec-wotd-card__tag {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--ec-orange);
  display: flex;
  align-items: center;
  gap: 7px;
}

.ec-wotd-card__pulse {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ec-orange);
  flex-shrink: 0;
  animation: ec-blink 1.6s infinite;
}

.ec-wotd-card__word-row {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 4px;
  flex-wrap: wrap;
}

.ec-wotd-card__word {
  font-size: 30px;
  font-weight: 800;
  color: var(--ec-text);
  letter-spacing: -0.5px;
  line-height: 1.1;
}

.ec-wotd-card__pos {
  font-size: 12px;
  font-style: italic;
  color: var(--ec-muted);
  font-family: var(--font-mono);
}

.ec-wotd-card__pronunciation {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ec-orange);
  margin-bottom: 14px;
  opacity: 0.85;
}

.ec-wotd-card__definition {
  font-size: 14px;
  line-height: 1.6;
  color: var(--ec-text);
  background: var(--ec-surface2);
  border-left: 3px solid var(--ec-orange);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 10px 14px;
  margin-bottom: 10px;
}

.ec-wotd-card__example {
  font-size: 13px;
  color: var(--ec-muted);
  font-style: italic;
  line-height: 1.6;
  margin-bottom: 12px;
  padding-left: 4px;
}

.ec-wotd-card__collocation {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--ec-orange-dim);
  border: 1px solid var(--ec-orange-dim2);
  border-radius: 20px;
  padding: 4px 12px;
  font-size: 12px;
  color: var(--ec-text);
  margin-bottom: 16px;
}

.ec-wotd-card__coll-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ec-orange);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 500;
}

.ec-wotd-card__checklist {
  margin-bottom: 18px;
}

.ec-wotd-card__checklist-label {
  font-family: var(--font-mono);
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--ec-muted);
  margin-bottom: 8px;
}

.ec-wotd-card__req {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  font-size: 12px;
  color: var(--ec-text);
  line-height: 1.5;
  margin-bottom: 6px;
}

.ec-wotd-card__req-box {
  width: 14px;
  height: 14px;
  border: 1.5px solid var(--ec-border2);
  border-radius: 3px;
  flex-shrink: 0;
  margin-top: 1px;
  display: inline-block;
}

.ec-wotd-card__cta {
  display: inline-flex;
}