/* ═══════════════════════════════════════
   LAYOUT — Consilium
   ═══════════════════════════════════════ */

/* ─── App Shell ─── */
.app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-8);
  border-bottom: 1px solid rgba(148, 163, 184, 0.16);
  background: rgba(23, 26, 32, 0.94);
  backdrop-filter: blur(18px) saturate(140%);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
}

.app-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--text-primary);
}

.app-logo-icon {
  font-size: var(--text-2xl);
}

.app-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  max-width: 1080px;
  width: 100%;
  margin: 0 auto;
  padding: var(--space-8) var(--space-6);
}

/* ─── Stepper ─── */
.stepper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
}

.stepper-step {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-muted);
  background: transparent;
  border: 1px solid transparent;
  cursor: default;
  transition: all var(--duration-normal) var(--ease-out);
  user-select: none;
}

.stepper-step.active {
  color: var(--text-primary);
  background: rgba(20, 184, 166, 0.14);
  border-color: rgba(20, 184, 166, 0.34);
  box-shadow: 0 0 12px rgba(20, 184, 166, 0.08);
}

.stepper-step.completed {
  color: var(--success);
}

.stepper-step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-default);
  transition: all var(--duration-normal) var(--ease-out);
}

.stepper-step.active .stepper-step-num {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: white;
}

.stepper-step.completed .stepper-step-num {
  background: var(--success);
  border-color: var(--success);
  color: white;
}

.stepper-line {
  width: 40px;
  height: 1px;
  background: var(--border-default);
  transition: background var(--duration-normal) var(--ease-out);
}

.stepper-line.completed {
  background: var(--success);
}

/* ─── Step Container ─── */
.step {
  display: none;
  flex-direction: column;
  gap: var(--space-6);
  animation: stepFadeIn var(--duration-slow) var(--ease-out);
}

.step.active {
  display: flex;
}

.step-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.step-subtitle {
  font-size: var(--text-base);
  color: var(--text-secondary);
  margin-top: var(--space-1);
}

/* ─── Step Navigation ─── */
.step-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-6);
  border-top: 1px solid var(--border-default);
  margin-top: auto;
}

.step-nav-spacer {
  flex: 1;
}

/* ─── Section ─── */
.section {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.data-step {
  gap: var(--space-5);
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.section-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  letter-spacing: -0.01em;
}

.section-badge {
  font-size: var(--text-xs);
  font-weight: 500;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-full);
  background: var(--accent-glow);
  color: var(--accent-hover);
}

/* ─── Grid ─── */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-4);
}

@media (max-width: 768px) {
  .app-header { padding: var(--space-3) var(--space-4); flex-wrap: wrap; justify-content: center; gap: var(--space-2); }
  .app-main { padding: var(--space-4); }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .stepper { flex-wrap: wrap; }
  .stepper-step span:not(.stepper-step-num) { display: none; }
  .stepper-line { width: 20px; }
  #header-status { display: none; }
}