/* ============================================================
   OPTIMUSCLE — Challenges Styles (liquid glass premium)
   ============================================================ */

/* ===== PAGE CHALLENGES ===== */
#page-challenges {
  /* Géré par .page.active */
}

#challenges-content {
  padding: 16px 16px 32px;
  max-width: 760px;
  margin: 0 auto;
}

/* ===== HEADER ===== */
.chal-header {
  text-align: center;
  margin-bottom: 28px;
  padding: 16px 0;
}

.chal-header h1 {
  font-size: clamp(36px, 9vw, 56px);
  line-height: 0.95;
  margin: 12px 0 8px;
}

.chal-header p {
  color: var(--text-dim);
  font-size: 14px;
}

/* ===== SECTION ===== */
.chal-section {
  margin-bottom: 32px;
}

.chal-section-title {
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
  padding: 0 4px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.chal-section-title span {
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ===== DÉFI HEBDOMADAIRE (carte principale) ===== */
.chal-weekly-card {
  position: relative;
  background: var(--glass-bg-2);
  backdrop-filter: var(--blur-md);
  -webkit-backdrop-filter: var(--blur-md);
  border: 1px solid var(--glass-border-strong);
  border-radius: var(--radius-xl);
  padding: 24px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.chal-weekly-card.completed {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.15), rgba(16, 185, 129, 0.04));
  border-color: rgba(16, 185, 129, 0.5);
}

.chal-weekly-glow {
  position: absolute;
  top: -40%;
  right: -20%;
  width: 300px;
  height: 300px;
  filter: blur(60px);
  pointer-events: none;
  z-index: 0;
}

.chal-weekly-header {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}

.chal-weekly-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-lg);
  display: grid;
  place-items: center;
  font-size: 32px;
  flex-shrink: 0;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3),
              inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.chal-weekly-info { flex: 1; min-width: 0; }

.chal-weekly-tag {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
  font-weight: 800;
  margin-bottom: 4px;
}

.chal-weekly-title {
  font-family: var(--font-display);
  font-size: 24px;
  letter-spacing: 0.02em;
  line-height: 1;
  margin-bottom: 6px;
}

.chal-weekly-desc {
  font-size: 13px;
  color: var(--text-soft);
  line-height: 1.4;
  margin: 0;
}

.chal-weekly-progress {
  position: relative;
  z-index: 1;
}

.chal-progress-info {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 8px;
}

.chal-progress-current {
  font-family: var(--font-display);
  font-size: 28px;
  letter-spacing: 0.02em;
}

.chal-progress-current .dim {
  color: var(--text-dim);
  font-size: 18px;
}

.chal-progress-percent {
  font-size: 14px;
  font-weight: 800;
  color: var(--text-soft);
}

.chal-progress-bar {
  height: 10px;
  background: var(--glass-bg-1);
  backdrop-filter: var(--blur-sm);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.chal-progress-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 1s var(--ease-out);
  box-shadow: 0 0 12px currentColor, inset 0 1px 0 rgba(255, 255, 255, 0.3);
  position: relative;
  overflow: hidden;
}

.chal-progress-fill::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  animation: shimmer-fast 2s linear infinite;
}

.chal-completed-badge {
  margin-top: 16px;
  padding: 12px 16px;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.4);
  border-radius: var(--radius-md);
  text-align: center;
  font-size: 13px;
  font-weight: 700;
  color: #10b981;
  position: relative;
  z-index: 1;
}

/* ===== DÉFIS 30 JOURS ACTIFS ===== */
.chal-active-card {
  position: relative;
  background: var(--glass-bg-2);
  backdrop-filter: var(--blur-md);
  -webkit-backdrop-filter: var(--blur-md);
  border: 1px solid var(--glass-border-strong);
  border-radius: var(--radius-xl);
  padding: 20px;
  margin-bottom: 12px;
  overflow: hidden;
}

.chal-active-glow {
  position: absolute;
  top: -30%;
  left: -10%;
  width: 250px;
  height: 250px;
  filter: blur(50px);
  pointer-events: none;
}

.chal-active-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
  position: relative;
}

.chal-active-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  font-size: 26px;
  flex-shrink: 0;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.25),
              inset 0 1px 0 rgba(255, 255, 255, 0.25);
}

.chal-active-info { flex: 1; min-width: 0; }

.chal-active-title {
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 0.02em;
  line-height: 1;
  margin-bottom: 4px;
}

.chal-active-day {
  font-size: 12px;
  color: var(--text-dim);
  font-weight: 600;
}

.chal-active-day strong {
  color: var(--text);
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: 0.05em;
}

.chal-active-abandon {
  background: var(--glass-bg-1);
  border: 1px solid var(--glass-border);
  color: var(--text-dim);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  display: grid;
  place-items: center;
  font-size: 13px;
  transition: all 0.2s;
  flex-shrink: 0;
}

.chal-active-abandon:hover {
  background: var(--danger);
  color: white;
  border-color: var(--danger);
}

.chal-active-progress {
  margin-bottom: 16px;
  position: relative;
}

/* Objectif du jour */
.chal-today-task {
  background: var(--glass-bg-3);
  border: 1px solid var(--glass-border-strong);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.chal-today-task.done {
  background: rgba(16, 185, 129, 0.12);
  border-color: rgba(16, 185, 129, 0.4);
}

.chal-today-task.rest {
  background: rgba(139, 92, 246, 0.1);
  border-color: rgba(139, 92, 246, 0.3);
}

.chal-today-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  font-weight: 800;
  margin-bottom: 6px;
}

.chal-today-task.done .chal-today-label {
  color: #10b981;
}

.chal-today-task.rest .chal-today-label {
  color: #8b5cf6;
}

.chal-today-value {
  font-family: var(--font-display);
  font-size: 24px;
  letter-spacing: 0.02em;
  margin-bottom: 12px;
  color: var(--text);
}

.chal-today-btn {
  width: 100%;
  padding: 12px 16px;
  background: var(--grad-brand);
  border: none;
  color: white;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 4px 12px var(--accent-glow),
              inset 0 1px 0 rgba(255, 255, 255, 0.2);
  font-family: inherit;
}

.chal-today-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px var(--accent-glow);
}

.chal-today-btn.done {
  background: rgba(16, 185, 129, 0.2);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.4);
  cursor: default;
}

/* Grille des 30 jours (visualisation streak) */
.chal-streak-grid {
  display: grid;
  grid-template-columns: repeat(15, 1fr);
  gap: 4px;
  position: relative;
  z-index: 1;
}

@media (min-width: 600px) {
  .chal-streak-grid {
    grid-template-columns: repeat(30, 1fr);
  }
}

.chal-day-cell {
  aspect-ratio: 1;
  background: var(--glass-bg-1);
  border: 1px solid var(--glass-border);
  border-radius: 4px;
  transition: all 0.2s;
}

.chal-day-cell.done {
  background: var(--grad-brand);
  border-color: transparent;
  box-shadow: 0 0 6px var(--accent-glow);
}

.chal-day-cell.today {
  background: var(--glass-bg-3);
  border-color: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
  animation: pulse-cell 2s ease-in-out infinite;
}

.chal-day-cell.failed {
  background: rgba(239, 68, 68, 0.2);
  border-color: rgba(239, 68, 68, 0.4);
}

.chal-day-cell.future {
  opacity: 0.4;
}

@keyframes pulse-cell {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.15); }
}

/* ===== CATALOGUE 30 JOURS ===== */
.chal-catalog-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

@media (min-width: 600px) {
  .chal-catalog-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.chal-catalog-card {
  position: relative;
  background: var(--glass-bg-2);
  backdrop-filter: var(--blur-md);
  -webkit-backdrop-filter: var(--blur-md);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 18px;
  display: flex;
  align-items: center;
  gap: 14px;
  overflow: hidden;
  transition: all 0.25s;
}

.chal-catalog-card:hover {
  transform: translateY(-2px);
  border-color: var(--glass-border-strong);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.chal-catalog-card.active {
  background: linear-gradient(135deg, var(--accent-glow-soft), transparent);
  border-color: var(--accent);
}

.chal-catalog-glow {
  position: absolute;
  top: -30%;
  right: -10%;
  width: 150px;
  height: 150px;
  filter: blur(40px);
  pointer-events: none;
}

.chal-catalog-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  font-size: 24px;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25),
              inset 0 1px 0 rgba(255, 255, 255, 0.25);
  position: relative;
  z-index: 1;
}

.chal-catalog-content {
  flex: 1;
  min-width: 0;
  position: relative;
  z-index: 1;
}

.chal-catalog-title {
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: 0.02em;
  line-height: 1.1;
  margin-bottom: 2px;
}

.chal-catalog-desc {
  font-size: 12px;
  color: var(--text-dim);
  line-height: 1.3;
  margin-bottom: 6px;
}

.chal-catalog-meta {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.chal-meta-pill {
  background: var(--glass-bg-1);
  border: 1px solid var(--glass-border);
  padding: 3px 8px;
  border-radius: var(--radius-full);
  font-size: 10px;
  font-weight: 700;
  color: var(--text-dim);
  letter-spacing: 0.05em;
}

.chal-meta-beginner { color: #10b981; border-color: rgba(16, 185, 129, 0.3); }
.chal-meta-intermediate { color: #fbbf24; border-color: rgba(251, 191, 36, 0.3); }
.chal-meta-advanced { color: #ef4444; border-color: rgba(239, 68, 68, 0.3); }

.chal-catalog-btn {
  background: var(--accent-glow-soft);
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 8px 14px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s;
  flex-shrink: 0;
  font-family: inherit;
  position: relative;
  z-index: 1;
}

.chal-catalog-btn:hover:not(.active) {
  background: var(--accent);
  color: white;
}

.chal-catalog-btn.active {
  background: rgba(16, 185, 129, 0.15);
  border-color: rgba(16, 185, 129, 0.5);
  color: #10b981;
  cursor: default;
}