/* layout.css — โครง header / sidebar / content / footer + responsive drawer (<768px) */

/* App root ครอบทั้งหน้า */
#app {
  min-height: 100vh;
}

/* ---------- Layout shell (หลังล็อกอิน) ---------- */
.app-shell {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  grid-template-rows: var(--header-h) 1fr auto;
  grid-template-areas:
    "sidebar header"
    "sidebar main"
    "sidebar footer";
  min-height: 100vh;
}

/* Header */
.app-header {
  grid-area: header;
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  padding: 0 var(--sp-5);
  height: var(--header-h);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.05);
}
.app-header .header-title {
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
}
.app-header .header-spacer { flex: 1; }
.app-header .header-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}
.app-header .header-user {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  line-height: 1.2;
  margin-right: var(--sp-2);
}
.app-header .header-user .user-name { font-weight: var(--fw-semibold); font-size: var(--fs-sm); }
.app-header .header-user .user-sub { font-size: var(--fs-xs); color: var(--color-text-muted); }

.hamburger {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--color-text);
  font-size: 1.5rem;
  line-height: 1;
  padding: var(--sp-1) var(--sp-2);
  border-radius: var(--radius-sm);
}
.hamburger:hover { background: var(--color-surface-2); }

/* Sidebar — โทนเข้มแบบ standalone (#1e2a3a) */
.app-sidebar {
  grid-area: sidebar;
  background: var(--sidebar-bg);
  border-right: none;
  display: flex;
  flex-direction: column;
  z-index: var(--z-sidebar);
  /* ตรึงความสูง = viewport + sticky → เมนูยาว (หลายโมดูล) scroll ในตัวเอง
     ไม่ดันแถว grid ให้ main สูงตาม (กันช่องว่างใต้เนื้อหาสั้น) */
  position: sticky;
  top: 0;
  align-self: start;
  height: 100vh;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.14) transparent;
}
.app-sidebar::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.14);
  background-clip: content-box;
}
.sidebar-brand {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  height: var(--header-h);
  padding: 0 var(--sp-5);
  border-bottom: 1px solid var(--sidebar-border);
  font-weight: var(--fw-bold);
  font-size: var(--fs-lg);
  color: #fff;
  flex-shrink: 0;
  white-space: nowrap;
}
.sidebar-brand .brand-logo {
  width: 32px; height: 32px;
  border-radius: var(--radius-md);
  background: var(--sidebar-active-accent);
  color: #fff;
  display: grid; place-items: center;
  font-weight: var(--fw-bold);
  font-size: var(--fs-sm);
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(59, 130, 246, 0.4);
}
.sidebar-nav {
  list-style: none;
  padding: var(--sp-2) var(--sp-2) var(--sp-4);
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.sidebar-nav .nav-link {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-3);
  border-radius: var(--radius-md);
  border-left: 3px solid transparent;
  color: var(--sidebar-text);
  font-weight: var(--fw-medium);
  font-size: var(--fs-sm);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.sidebar-nav .nav-link:hover {
  background: rgba(255, 255, 255, 0.07);
  color: var(--sidebar-text-hover);
  text-decoration: none;
}
.sidebar-nav .nav-link.active {
  background: var(--sidebar-active-bg);
  color: #fff;
  border-left-color: var(--sidebar-active-accent);
}
.sidebar-nav .nav-icon {
  width: 20px; text-align: center; flex-shrink: 0;
  opacity: 0.85;
  font-size: 1rem;
}
.sidebar-nav .nav-link.active .nav-icon { opacity: 1; }

/* Main content */
.app-main {
  grid-area: main;
  padding: var(--sp-6) var(--sp-6);
  overflow-x: auto;
  /* min-width:0 กันบั๊ก grid track (min-width:auto) — ปล่อยให้คอนเทนต์กว้าง (เช่น ตารางสลิปที่มีหลายคอลัมน์)
     scroll แนวนอนภายใน .app-main / .table-wrap แทนที่จะดันทั้งหน้าเกินจอจนคอลัมน์ขวาถูกตัด */
  min-width: 0;
}
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  margin-bottom: var(--sp-5);
  flex-wrap: wrap;
}
.page-header h1 { font-size: var(--fs-2xl); font-weight: var(--fw-bold); }
.page-header .page-subtitle { color: var(--color-text-muted); font-size: var(--fs-sm); margin-top: 2px; }

/* Footer */
.app-footer {
  grid-area: footer;
  padding: var(--sp-4) var(--sp-5);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
  text-align: center;
}

/* Drawer overlay (mobile) */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--overlay-bg);
  z-index: var(--z-overlay);
}

/* ---------- Auth / centered layout (login) ---------- */
.auth-layout {
  display: grid;
  place-items: center;
  min-height: 100vh;
  padding: var(--sp-5);
  background:
    radial-gradient(circle at 20% 20%, var(--color-primary-soft), transparent 40%),
    var(--color-bg);
}

/* ---------- Responsive: drawer < 768px ---------- */
@media (max-width: 768px) {
  .app-shell {
    grid-template-columns: 1fr;
    grid-template-areas:
      "header"
      "main"
      "footer";
  }
  .app-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: min(80vw, var(--sidebar-w));
    transform: translateX(-100%);
    transition: transform var(--transition);
    z-index: var(--z-overlay);
    box-shadow: var(--shadow-lg);
  }
  .app-shell.sidebar-open .app-sidebar {
    transform: translateX(0);
  }
  .app-shell.sidebar-open .sidebar-overlay {
    display: block;
  }
  .hamburger { display: inline-flex; }
  .app-main { padding: var(--sp-4); }
  .app-header .header-user .user-sub { display: none; }
}