/* Plataforma layout — sidebar + content shell shared by Alunos and Admin screens */

.app-shell {
  display: grid;
  grid-template-columns: 230px 1fr;
  min-height: 100vh;
  background: var(--neutral-50);
}
@media (max-width: 900px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: sticky; top: 0; z-index: 20; }
}

/* ─────────── Sidebar ─────────── */
.sidebar {
  background: var(--brand-blue);
  color: white;
  display: flex;
  flex-direction: column;
  padding: 28px 0 24px;
  min-height: 100vh;
  box-shadow: 4px 0 24px rgba(14,147,242,0.15);
}
.sidebar-logo {
  width: 130px;
  height: 100px;
  margin: 0 auto 28px;
  background: url("../assets/logo-azul.png") center / contain no-repeat;
  filter: brightness(0) invert(1); /* white logo */
}
.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}
.sidebar-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 28px;
  color: rgba(255,255,255,0.92);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.2px;
  border-left: 3px solid transparent;
  transition: background 0.15s ease, border-color 0.15s ease;
  cursor: pointer;
}
.sidebar-item:hover { background: rgba(255,255,255,0.08); }
.sidebar-item.is-active {
  background: rgba(0,0,0,0.10);
  border-left-color: white;
  color: white;
}
.sidebar-item svg { width: 22px; height: 22px; flex-shrink: 0; }

.sidebar-foot {
  display: flex;
  flex-direction: column;
  gap: 4px;
  border-top: 1px solid rgba(255,255,255,0.18);
  padding-top: 14px;
  margin-top: 14px;
}

/* ─────────── Content ─────────── */
.content {
  padding: 52px 64px 64px;
  max-width: 100%;
  overflow: hidden;
}
@media (max-width: 900px) { .content { padding: 32px 24px; } }

.section-title {
  font-family: var(--font-akagi);
  font-weight: 600;
  font-size: 22px;
  line-height: 22px;
  letter-spacing: 0.3px;
  color: var(--brand-blue);
  margin: 0 0 24px;
}
.section-title + .section-title { margin-top: 40px; }

/* ─────────── Generic cards ─────────── */
.card {
  background: var(--neutral-0);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-soft);
  padding: 24px;
}

/* ─────────── Course tile ─────────── */
.course-tile {
  position: relative;
  background: var(--neutral-0);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.course-tile:hover { transform: translateY(-3px); box-shadow: var(--shadow-card); }
.course-tile-img {
  aspect-ratio: 254 / 320;
  background: var(--neutral-300);
  background-size: cover;
  background-position: center;
}
.course-tile-body {
  padding: 14px 18px 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.course-tile-title {
  font-family: var(--font-akagi);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.6px;
  color: var(--text-primary);
  text-transform: uppercase;
  margin: 0;
}
.course-tile-sub {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 13px;
  color: var(--text-muted);
  margin: 0;
}
.progress-bar {
  position: relative;
  height: 16px;
  background: var(--neutral-250);
  border-radius: var(--radius-pill);
  overflow: hidden;
}
.progress-bar > span {
  display: block;
  height: 100%;
  background: var(--brand-blue);
  border-radius: var(--radius-pill);
}
.progress-bar > em {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 11px;
  font-style: normal;
  color: var(--text-secondary);
  letter-spacing: 0.4px;
}

/* ─────────── Course card (compact, no thumb) ─────────── */
.course-card {
  background: var(--neutral-150);
  border-radius: var(--radius-xl);
  padding: 24px 22px 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 200px;
  transition: background 0.15s ease;
  cursor: pointer;
}
.course-card:hover { background: var(--neutral-200); }
.course-card.has-content { justify-content: space-between; }
.course-card-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-align: center;
  margin-top: 30%;
}
.course-card-title {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 18px;
  color: var(--text-primary);
  margin: 0;
}
.course-card-sub {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 13px;
  color: var(--text-muted);
  margin: 0;
}
.course-card-foot {
  font-family: var(--font-akagi);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.4px;
  color: var(--text-secondary);
  text-align: center;
}

/* ─────────── Banner ─────────── */
.banner {
  background: var(--neutral-0);
  border-radius: var(--radius-xl);
  padding: 32px 36px;
  box-shadow: var(--shadow-soft);
  position: relative;
  overflow: hidden;
}
.banner-date {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
  margin: 0 0 24px;
}
.banner-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 32px;
  line-height: 1.15;
  letter-spacing: 0.5px;
  text-align: center;
  text-transform: uppercase;
  color: var(--neutral-950);
  margin: 0 0 18px;
}
.banner-body {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 18px;
  line-height: 1.5;
  text-align: center;
  color: var(--text-primary);
  margin: 0 auto;
  max-width: 540px;
}
.banner-body em {
  font-style: normal;
  color: var(--color-danger);
  font-weight: 600;
}

.dots {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 18px;
}
.dots span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(14,147,242,0.35);
  transition: width 0.2s ease;
}
.dots span.is-active {
  width: 22px;
  border-radius: 4px;
  background: var(--brand-blue);
}

/* Index back button overlay (per screen) */
.back-home {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 99;
  padding: 8px 14px;
  background: rgba(255,255,255,0.95);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-soft);
  font-size: 13px;
  font-weight: 600;
  color: var(--brand-blue);
}