body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f3f4f6;
    color: #1f2937;
    font-size: 12px;
}

/* =========================
   HEADER
   ========================= */
.app-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 56px;
    background: #ffffff;
    border-bottom: 1px solid #e5e7eb;
    display: flex;
    align-items: center;
    padding: 0 16px;
    z-index: 1000;
}

/* BRAND */
.header-left {
    min-width: 220px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo {
    width: 36px;
    height: 36px;
    background: #2563eb;
    color: #fff;
    font-weight: bold;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.brand-text .title {
    font-size: 13px;
    font-weight: 600;
}

.brand-text .subtitle {
    font-size: 11px;
    color: #6b7280;
}

/* NAV */
.header-center {
    display: flex;
    align-items: center;
    gap: 6px;
    flex: 1;
}

.header-center a {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 10px;
    text-decoration: none;
    color: #374151;
    border-radius: 6px;
}

.header-center a:hover {
    background: #f3f4f6;
}

.header-center i {
    font-size: 13px;
}

/* DROPDOWN */
.nav-dropdown {
    position: relative;
}

.nav-dropdown-menu {
    position: absolute;
    top: 110%;
    left: 0;
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 6px;
    min-width: 180px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.08);
    display: none;
}

.nav-dropdown:hover .nav-dropdown-menu {
    display: block;
}

.nav-dropdown-menu a {
    display: block;
    padding: 8px 14px;
    color: #374151;
}

.nav-dropdown-menu a:hover {
    background: #f3f4f6;
}

/* USER */
.header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-box {
    display: flex;
    align-items: center;
    gap: 6px;
}

.logout-link {
    color: #9ca3af;
}

.logout-link:hover {
    color: #ef4444;
}

/* BODY */
.app-body {
    padding-top: 70px;
    padding-left: 16px;
    padding-right: 16px;
}

/* PAGE HEADER */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.page-header h1 {
    font-size: 16px;
    margin: 0;
}

.page-actions a {
    padding: 6px 10px;
    background: #2563eb;
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
    font-size: 12px;
}