/* ═══════════════════════════════════════════════════════
   LAYOUT — BigData FUNASA Design System
   Ref: MIV.md (Jul/2026)
   ═══════════════════════════════════════════════════════ */

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

.app-body {
  display: flex;
  flex: 1;
}

/* ── Header ── */
.app-header {
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1100;
  height: var(--header-height);
  display: flex;
  align-items: center;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 clamp(1rem, 3vw, 2.5rem);
}

.header-brand {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.header-brand__logo {
  height: 40px;
  width: auto;
  object-fit: contain;
}

.header-brand__separator {
  width: 1px;
  height: 32px;
  background: var(--border);
}

.header-brand__partners {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.header-brand__partners img {
  height: 28px;
  width: auto;
  object-fit: contain;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.header-user {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--text-primary);
}

.header-user__avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--surface-muted);
  border: 1px solid var(--border);
  object-fit: cover;
}

/* ── Sidebar (Desktop) ── */
.sidebar {
  width: var(--sidebar-width);
  background: var(--funasa-blue-dark);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-md) 0;
  gap: var(--space-xs);
  position: sticky;
  top: var(--header-height);
  height: calc(100vh - var(--header-height));
  overflow-y: auto;
  flex-shrink: 0;
  z-index: 1000;
}

.sidebar__icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  color: rgba(255, 255, 255, 0.6);
  transition: all 0.15s;
  cursor: pointer;
  border: none;
  background: transparent;
  text-decoration: none;
}

.sidebar__icon:hover {
  background: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.9);
}

.sidebar__icon--active {
  background: rgba(255, 255, 255, 0.15);
  color: #FFFFFF;
}

.sidebar__icon svg,
.sidebar__icon img {
  width: 22px;
  height: 22px;
}

.sidebar__spacer {
  flex: 1;
}

/* ── Main Content ── */
.main-content {
  flex: 1;
  padding: var(--space-lg) clamp(1rem, 3vw, 2.5rem);
  max-width: var(--content-max-width);
  margin: 0 auto;
  width: 100%;
}

/* ── Page Title ── */
.page-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 var(--space-xs);
}

.page-subtitle {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  margin: 0 0 var(--space-lg);
}

/* ── Grid System ── */
.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid--kpi {
  grid-template-columns: repeat(4, 1fr);
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.grid--main {
  grid-template-columns: 1fr 320px;
}

/* ── Section Spacing ── */
.section {
  margin-bottom: var(--space-xl);
}

/* ── Bottom Navigation (Mobile) ── */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
  display: none; /* hidden on desktop */
  justify-content: space-around;
  align-items: center;
  padding: var(--space-sm) 0;
  padding-bottom: env(safe-area-inset-bottom, var(--space-sm));
  z-index: 1100;
  height: var(--bottom-nav-height);
}

.bottom-nav__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  font-size: 0.625rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  padding: var(--space-xs);
  border-radius: var(--radius-md);
  border: none;
  background: none;
  cursor: pointer;
}

.bottom-nav__item--active {
  color: var(--funasa-blue);
}

.bottom-nav__item svg,
.bottom-nav__item img {
  width: 22px;
  height: 22px;
}

/* ── Footer ── */
.app-footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: var(--space-lg) clamp(1rem, 3vw, 2.5rem);
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.app-footer a {
  color: var(--funasa-blue);
  text-decoration: none;
}
.app-footer a:hover {
  text-decoration: underline;
}