/* learn.css — Lesson module page styles */

/* --- Layout --- */
.learn-page {
  max-width: 820px;
  margin: 0 auto;
  padding: var(--space-xl) var(--space-xl) var(--space-2xl);
}

/* --- Welcome Back Banner --- */
.welcome-back {
  background: rgba(45,106,79,0.08);
  border: 1px dashed var(--india-green);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  margin-bottom: var(--space-lg);
  font-family: var(--font-stamp);
  font-style: italic;
  color: var(--india-green);
  font-size: 1rem;
  display: none; /* shown by JS when returning user detected */
}
.welcome-back.visible { display: block; animation: stampIn 300ms ease-out; }

/* --- Progress Bar --- */
.progress-track {
  margin-bottom: var(--space-xl);
}

.progress-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-sm);
}

.progress-label-text {
  font-family: var(--font-ui);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--sepia);
}

.progress-label-module {
  font-family: var(--font-stamp);
  font-size: 0.9rem;
  color: var(--india-green);
}

.progress-bar-outer {
  height: 12px;
  background: rgba(123,94,58,0.15);
  border-radius: 20px;
  border: 1px solid rgba(123,94,58,0.2);
  position: relative;
  overflow: visible;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--india-green), var(--india-green-light));
  border-radius: 20px;
  transition: width 400ms ease;
  position: relative;
}

/* Tally milestone marks on progress bar */
.progress-milestones {
  display: flex;
  justify-content: space-between;
  padding: 0 2px;
  margin-top: var(--space-xs);
}

.milestone-mark {
  width: 2px;
  height: 6px;
  background: var(--sepia-light);
  border-radius: 1px;
  position: relative;
}

.milestone-mark.done { background: var(--india-green); }

.milestone-mark span {
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-stamp);
  font-size: 0.65rem;
  color: var(--ash);
  white-space: nowrap;
}

.milestone-mark.done span { color: var(--india-green); }

/* --- Lesson Card --- */
.lesson-card {
  background: var(--khadi);
  border: 1px solid var(--sepia);
  border-radius: var(--radius-md);
  padding: var(--space-xl) var(--space-2xl);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
  /* Ruled-line texture */
  background-image: repeating-linear-gradient(
    transparent, transparent 31px,
    rgba(123, 94, 58, 0.06) 32px
  );
}

/* Ashoka chakra watermark on lesson card */
.lesson-card::before {
  content: '';
  position: absolute;
  right: -40px;
  bottom: -40px;
  width: 200px;
  height: 200px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 200' fill='none'%3E%3Ccircle cx='100' cy='100' r='90' stroke='%237B5E3A' stroke-width='3'/%3E%3Ccircle cx='100' cy='100' r='20' stroke='%237B5E3A' stroke-width='3'/%3E%3Cg stroke='%237B5E3A' stroke-width='2'%3E%3Cline x1='100' y1='10' x2='100' y2='80'/%3E%3Cline x1='100' y1='120' x2='100' y2='190'/%3E%3Cline x1='10' y1='100' x2='80' y2='100'/%3E%3Cline x1='120' y1='100' x2='190' y2='100'/%3E%3C/g%3E%3C/svg%3E") no-repeat center;
  background-size: contain;
  opacity: 0.04;
  pointer-events: none;
}

.lesson-module-num {
  font-family: var(--font-stamp);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--saffron);
  margin-bottom: var(--space-xs);
}

.lesson-title {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  font-weight: 700;
  color: var(--navy);
  margin-bottom: var(--space-lg);
  border-bottom: 1px dashed var(--sepia-light);
  padding-bottom: var(--space-md);
}

.lesson-body p {
  font-family: var(--font-body);
  font-size: 1.05rem;
  color: var(--navy);
  line-height: 1.85;
  margin-bottom: var(--space-md);
}

.lesson-body p:last-child { margin-bottom: 0; }

/* Key Fact — gazette notification style */
.lesson-key-fact {
  border-left: 4px solid var(--saffron);
  background: rgba(224,123,57,0.06);
  padding: var(--space-md) var(--space-lg);
  margin: var(--space-xl) 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.lesson-key-fact .key-fact-label {
  font-family: var(--font-stamp);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--saffron);
  margin-bottom: var(--space-xs);
}
.lesson-key-fact p {
  font-family: var(--font-body);
  font-style: italic;
  font-size: 1rem;
  color: var(--navy);
  line-height: 1.65;
  margin: 0;
}

/* --- Lesson Navigation Buttons --- */
.lesson-nav {
  display: flex;
  gap: var(--space-md);
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-xl);
  flex-wrap: wrap;
}

.lesson-nav-right {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.btn-prev {
  background: transparent;
  border: 1px solid var(--sepia);
  color: var(--sepia);
  font-family: var(--font-ui);
  font-size: 0.9rem;
  padding: 10px var(--space-lg);
  border-radius: var(--radius-sm);
  cursor: pointer;
  min-height: 44px;
  transition: all var(--transition-fast);
}
.btn-prev:hover {
  background: var(--sepia);
  color: var(--white);
}
.btn-prev:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

/* --- Loading state --- */
.learn-loading {
  text-align: center;
  padding: var(--space-2xl);
  color: var(--sepia);
  font-family: var(--font-body);
  font-style: italic;
}

/* --- Responsive --- */
@media (max-width: 600px) {
  .learn-page { padding: var(--space-lg) var(--space-md) var(--space-2xl); }
  .lesson-card { padding: var(--space-lg); }
  .lesson-nav { flex-direction: column; align-items: stretch; }
  .lesson-nav-right { flex-direction: column; }
}