/* =============================================
   Страница /app — установка PWA MonWave
   ============================================= */

.app-page {
  max-width: 720px;
  margin: 0 auto;
}

/* --- Hero --- */
.app-hero {
  text-align: center;
  padding: 48px 24px 40px;
  background: var(--glass-bg-softer);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-br-soft);
  border-radius: 16px;
  margin-bottom: 20px;
}
.app-hero-icon {
  border-radius: 20px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.10);
  margin-bottom: 20px;
}
.app-hero-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-default);
  margin: 0 0 8px;
  letter-spacing: -0.5px;
}
.app-hero-sub {
  font-size: 16px;
  color: var(--text-sub);
  margin: 0 0 28px;
  line-height: 1.5;
}

.app-install-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--btn-bg-default, #35708d);
  color: #fff;
  border: none;
  border-radius: 12px;
  padding: 14px 32px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: opacity 0.2s, transform 0.1s;
}
.app-install-btn:hover { opacity: 0.88; }
.app-install-btn:active { transform: scale(0.97); }

.app-installed-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 12px;
  background: rgba(21, 158, 58, 0.1);
  color: #159e3a;
  font-size: 16px;
  font-weight: 600;
}

/* --- Преимущества --- */
.app-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 20px;
}
.app-feature-card {
  background: var(--glass-bg-softer);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-br-soft);
  border-radius: 14px;
  padding: 28px 20px;
  text-align: center;
}
.app-feature-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: var(--glass-bg-neutral);
  color: var(--text-default);
}
.app-feature-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-default);
  margin: 0 0 8px;
}
.app-feature-card p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.5;
  margin: 0;
}

/* --- Инструкция --- */
.app-instructions {
  background: var(--glass-bg-softer);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-br-soft);
  border-radius: 16px;
  padding: 36px 32px;
}
.app-instructions h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-default);
  margin: 0 0 24px;
  text-align: center;
}
.app-instr-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.app-instr-block {
  background: var(--glass-bg-neutral);
  border-radius: 12px;
  padding: 24px 20px;
}
.app-instr-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--text-sub);
  margin-bottom: 16px;
  padding: 4px 10px;
  border-radius: 6px;
  background: var(--glass-bg-softer);
}
.app-instr-steps {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.app-instr-step {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-secondary);
}
.app-instr-step strong {
  color: var(--text-default);
}
.app-step-num {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--btn-bg-default, #35708d);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.app-instr-hint {
  margin: 14px 0 0;
  font-size: 13px;
  color: var(--text-sub);
  line-height: 1.5;
}

/* --- Мобильная адаптация --- */
@media (max-width: 767px) {
  .app-hero {
    padding: 36px 18px 32px;
    border-radius: 12px;
  }
  .app-hero-title { font-size: 26px; }
  .app-hero-sub { font-size: 15px; }

  .app-features {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .app-feature-card {
    padding: 20px 18px;
    text-align: left;
    display: flex;
    align-items: flex-start;
    gap: 14px;
  }
  .app-feature-icon {
    margin: 0;
    flex-shrink: 0;
    width: 48px;
    height: 48px;
  }
  .app-feature-card h3 { margin-bottom: 4px; }

  .app-instructions {
    padding: 24px 18px;
    border-radius: 12px;
  }
  .app-instructions h2 { font-size: 20px; }
  .app-instr-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .app-instr-block { padding: 18px 16px; }
}